CN117438236A

CN117438236A - Key structure and electronic equipment

Info

Publication number: CN117438236A
Application number: CN202210821044.5A
Authority: CN
Inventors: 陆郁飞; 徐治效; 孙永
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2022-07-13
Filing date: 2022-07-13
Publication date: 2024-01-23

Abstract

The embodiment of the application provides a key structure and electronic equipment, wherein the key structure comprises a driving assembly, a transmission piece and a switch; the driving component and the transmission piece are movably arranged; the switch is arranged close to the second end of the driving assembly, the transmission piece is positioned between the switch and the second end of the driving assembly, and an included angle between the conduction direction of the switch and the direction from the first end to the second end of the driving assembly is larger than zero; the second end of the driving component is provided with a driving part, one surface of the transmission part, which is far away from the switch, is provided with a transmission part, and the driving part is in sliding connection with the transmission part; when the driving part is in contact with the transmission part, the orthographic projection of the driving part in the direction from the first end of the driving assembly to the second end is at least partially overlapped with the orthographic projection of the transmission part in the direction from the first end of the driving assembly to the second end; the orthographic projection of the driving part in the switch conducting direction is at least partially overlapped with the orthographic projection of the transmission part in the switch conducting direction. The key structure in the embodiment of the application is small in thickness, and is beneficial to ultrathin development of electronic equipment.

Description

Key structure and electronic equipment

Technical Field

The embodiment of the application relates to the technical field of electronic equipment, in particular to a key structure and electronic equipment.

Background

With the development of technology, various electronic products such as: the updating speed of mobile phones, tablet computers and the like is very high, the requirements on the external appearance of electronic equipment such as mobile phones, tablet computers and the like in the market are higher and higher, and the existing electronic equipment such as mobile phones, tablet computers and the like are pursuing ultrathin designs so that products are simpler and fashionable.

The design of the mobile phone side key structure can greatly influence the width and thickness of the whole machine, the mobile phone side key structure in the market at present generally comprises a side key 1, a thimble 2, a support 3 and a switch 4, fig. 1 is a structural schematic diagram of the mobile phone side key, wherein the thickness direction of the mobile phone is z-direction, the mobile phone side key structure is arranged on a middle frame 6 of the mobile phone, the side key 1 and the support 3 are respectively positioned at two ends of the thimble 2, the thimble 2 is positioned in the middle frame 6, one end of the side key 1 close to the thimble 2 is positioned in the middle frame 6, and the switch 4 is arranged at one side of the support 3 far away from the thimble 2; the side key 1 and the thimble 2 are slidably arranged along the x direction, and the conducting direction of the switch 4 (i.e. the thickness direction of the switch 4) is arranged along the x direction, i.e. the sliding direction of the side key 1 and the thimble 2 is the same as the conducting direction of the switch 4; the length or width direction of the switch 4 is along the z direction, the circuit board 5 of the switch 4 is arranged on one side of the switch 4 away from the bracket 3, the switch 4 is fixed on the middle frame 6 through the circuit board 5, when the side key 1 receives pressure along the x direction, the side key 1 drives the thimble 2 and the bracket 3 to move along the x direction towards the direction close to the circuit board 5, and the center point of the switch 4 is concave and contacts with a circuit conduction circuit of the circuit board 5.

However, the length or width of the bracket 3 and the switch 4 of the side key structure is too large in the thickness direction of the mobile phone, thereby greatly limiting the development of ultra-thin mobile phones.

Disclosure of Invention

The embodiment of the application provides a key structure and electronic equipment, wherein the key structure can greatly reduce the thickness of the electronic equipment, and is beneficial to the ultrathin development of the electronic equipment.

A first aspect of the embodiments of the present application provides a key structure, where the key structure includes a driving assembly, a transmission member, and a switch; wherein the driving component and the transmission piece are movably arranged; the switch is arranged close to the second end of the driving assembly, the transmission piece is positioned between the switch and the second end of the driving assembly, and an included angle between the conduction direction of the switch and the direction from the first end to the second end of the driving assembly is larger than zero; the second end of the driving component is provided with a driving part, one surface of the transmission piece, which is far away from the switch, is provided with a transmission part, and the driving part is in sliding connection with the transmission part; when the driving part is in contact with the transmission part, the orthographic projection of the driving part in the direction from the first end to the second end of the driving assembly is at least partially overlapped with the orthographic projection of the transmission part in the direction from the first end to the second end of the driving assembly; and the orthographic projection of the driving part in the conducting direction of the switch is at least partially overlapped with the orthographic projection of the transmission part in the conducting direction of the switch.

According to the key structure, the driving assembly and the transmission piece are movably arranged, so that the driving assembly can move relative to the transmission piece, the thickness of the key structure can be reduced through the fact that the included angle between the conducting direction of the switch and the direction from the first end to the second end of the driving assembly is larger than zero, the thickness of the switch in the conducting direction is smaller, the included angle between the conducting direction of the switch and the direction from the first end to the second end of the driving assembly is larger than zero, and compared with the prior art, the thickness of the key structure can be reduced through the technical scheme that the conducting direction of the switch is the same as the sliding direction of the side key and the thimble, and the thickness size of the whole electronic equipment is reduced more advantageously, and the light and thin development of the electronic equipment is promoted. In addition, the driving part is arranged on the driving assembly by arranging the transmission part between the switch and the second end of the driving assembly, and the transmission part is arranged on the transmission part so as to realize driving connection between the driving assembly and the transmission assembly; by contacting the driving part and the transmission part, the orthographic projection of the driving part in the direction from the first end to the second end of the driving assembly is at least partially overlapped with the orthographic projection of the transmission part in the direction from the first end to the second end of the driving assembly; the front projection of the driving part in the on direction of the switch and the front projection of the transmission part in the on direction of the switch are at least partially overlapped, so that the sliding of the driving assembly along the x direction can be converted into the movement of the transmission part along the z direction, and the switch can be switched between an off state and an on state.

In an alternative implementation manner, in the vertical direction from the first end to the second end of the driving component, the point from the driving part to the minimum switch distance is the top end of the driving part, and the point from the transmission part to the maximum switch distance is the bottom end of the transmission part;

when the switch is in an off state, the distance between the top end of the driving part and the bottom end of the transmission part in the direction from the first end to the second end of the driving assembly is a first distance;

the transmission part slides along the surface of the driving part towards the direction approaching to the top end of the driving part in the process that the driving assembly drives the switch to move from the disconnection state to the connection state, and the first distance is gradually reduced;

when the switch is in a conducting state, the distance between the top end of the driving part and the bottom end of the transmission part in the direction from the first end to the second end of the driving assembly is a second distance, and the second distance is greater than or equal to zero.

According to the key structure, the top end of the driving part and the bottom end of the transmission part are arranged in the direction from the first end to the second end of the driving assembly, so that space can be provided for sliding motion of the driving assembly, and when the first end of the driving assembly is pressed, the driving part can drive the transmission part to move towards the direction close to the switch, and then the top end of the driving part and the bottom end of the transmission part are mutually close, and when the transmission part moves to a certain position, the switch can be conducted.

In an alternative implementation, the transmission portion is located on a side of the drive portion remote from the first end of the drive assembly; wherein the thickness of the driving part in the direction perpendicular to the direction from the first end to the second end of the driving assembly gradually becomes smaller along the direction from the first end to the second end of the driving assembly; the thickness of the transmission part in the vertical direction from the first end to the second end of the driving assembly gradually increases along the direction from the first end to the second end of the driving assembly.

The transmission part is arranged on one side of the driving part away from the first end of the driving assembly, so that when the first end of the driving assembly is pressed to move in the direction of approaching the second end of the driving assembly, the transmission part can be driven to move in the direction of approaching the switch. Through the thickness of the one side that is connected with drive portion and drive portion contact in the direction of drive assembly first end to second end diminishes gradually, the one side that drive portion and drive portion contact and connect in the direction of drive assembly first end to second end diminishes gradually, can guarantee like this that relative motion between drive portion and the drive portion is more smooth, and then can improve the stability of this button structure.

In an alternative implementation manner, one surface of the driving part, which is in sliding connection with the transmission part, is a first inclined surface, and a second inclined surface matched with the first inclined surface is arranged on the transmission part; the first inclined surface is inclined in a direction away from the switch in a direction from the first end to the second end of the driving assembly; the second inclined surface is inclined in a direction away from the switch in a direction from the first end to the second end of the driving assembly;

in the vertical direction from the first end to the second end of the driving assembly, the point from the first inclined plane to the minimum switch distance is the top end of the first inclined plane, and the point from the second inclined plane to the maximum switch distance is the bottom end of the second inclined plane;

when the switch is in an off state, the distance between the bottom end of the second inclined surface and the top end of the first inclined surface in the direction from the first end to the second end of the driving assembly is a first distance;

in the process that the driving assembly drives the switch to move from the off state to the on state, the second inclined plane slides along the first inclined plane towards the direction approaching to the top end of the first inclined plane, and the first distance is gradually reduced;

When the switch is in a conducting state, the distance between the top end of the first inclined plane and the bottom end of the second inclined plane in the direction from the first end to the second end of the driving assembly is a second distance, and the second distance is greater than or equal to zero.

Through setting up first inclined plane on drive division, set up the second inclined plane on drive division to make things convenient for drive division and drive division sliding connection, and when drive division is in the first end of drive assembly to the motion of second end orientation, can drive the direction motion of drive division motion along perpendicular drive division, and the simple structure of inclined plane, convenient processing, so can reduce the processing degree of difficulty of drive assembly and driving medium like this, and then reduce the cost of this button structure.

In an alternative implementation, the driving part is a first arc-shaped protrusion; the first end of the first arc-shaped bulge is connected with the driving assembly, and the second end of the first arc-shaped bulge bulges towards the direction close to the transmission piece;

in the vertical direction from the first end to the second end of the driving assembly, the point from the first arc-shaped bulge to the minimum switching distance is the vertex of the first arc-shaped bulge, and the point from the transmission part to the maximum switching distance is the bottom end of the transmission part;

When the switch is in an off state, the distance between the bottom end of the transmission part and the vertex of the first arc-shaped bulge in the direction from the first end to the second end of the driving assembly is a first distance;

in the process that the driving assembly drives the switch to move from the off state to the on state, the transmission part slides along the surface of the first arc-shaped bulge towards the direction close to the vertex of the first arc-shaped bulge, and the first distance is gradually reduced;

when the switch is in a conducting state, the distance between the top point of the first arc-shaped bulge and the bottom end of the transmission part in the direction from the first end to the second end of the driving assembly is a second distance, and the second distance is larger than or equal to zero.

The structure of the driving part can be simplified by arranging the driving part into the first arc-shaped bulge, so that the processing difficulty of the driving part is reduced, and the cost is further reduced. In addition, the surface of the arc-shaped bulge is smooth, so that the contact area between the driving part and the transmission part can be reduced, the friction force between the driving part and the transmission part can be reduced, the key structure can be pressed more labor-saving, and the sensitivity of the key structure can be improved.

In an alternative implementation, the transmission part is a second arc-shaped protrusion; the first end of the second arc-shaped bulge is connected with the transmission piece, and the second end of the second arc-shaped bulge bulges towards the direction close to the driving assembly;

in the vertical direction from the first end to the second end of the driving assembly, the point with the largest switching distance from the second arc-shaped bulge is the vertex of the second arc-shaped bulge;

when the switch is in an off state, the distance between the vertex of the first arc-shaped bulge and the vertex of the second arc-shaped bulge in the direction from the first end to the second end of the driving assembly is the first distance;

in the process that the driving assembly drives the switch to move from the off state to the on state, the second arc-shaped bulge slides along the surface of the first arc-shaped bulge towards the direction close to the vertex of the first arc-shaped bulge, and the first distance is gradually reduced;

when the switch is in a conducting state, the distance between the vertex of the first arc-shaped bulge and the vertex of the second arc-shaped bulge in the direction from the first end to the second end of the driving assembly is the second distance, and the second distance is larger than or equal to zero.

The transmission part is arranged to be the second arc-shaped bulge, so that the surface of the transmission part is smooth, the contact area between the driving part and the transmission part can be reduced, the friction force between the driving part and the transmission part is further reduced, the abrasion of the driving part and the transmission part can be reduced, and the service life of the key structure is further prolonged; in addition, the key structure can be pressed more labor-saving, and the sensitivity of the key structure can be improved.

In an alternative implementation manner, one surface of the transmission part connected with the driving part is a third inclined surface; wherein the third ramp is inclined away from the switch in a direction from the first end to the second end of the drive assembly;

in the direction perpendicular to the direction from the first end to the second end of the driving assembly, the point from the third inclined plane to the maximum switch distance is the bottom end of the third inclined plane;

when the switch is in an off state, the bottom end of the third inclined surface and the vertex of the first arc-shaped bulge have the first distance in the direction from the first end to the second end of the driving assembly;

in the process that the driving assembly drives the switch to move from the off state to the on state, the third inclined surface slides along the surface of the first arc-shaped bulge towards the direction close to the vertex of the first arc-shaped bulge, and the first distance is gradually reduced;

When the switch is in a conducting state, the distance between the top point of the first arc-shaped bulge and the bottom end of the third inclined plane in the direction from the first end to the second end of the driving assembly is the second distance, and the second distance is larger than or equal to zero.

Through setting up the drive portion to the third inclined plane to make the protruding and third inclined plane of first arc of drive portion connect, for a right angle, the third inclined plane can be tangent with first arc protruding, thereby makes the relative motion between drive portion and the drive portion more smooth, thereby can reduce the wearing and tearing of drive portion and drive portion, extension button structure's life.

In an alternative implementation, the drive assembly includes a first drive member and a second drive member; wherein the first driving piece and the second driving piece are abutted; the drive assembly with the driving medium activity sets up, includes: the second driving piece and the transmission piece are movably arranged.

By arranging the driving assembly to be a structure comprising the first driving member and the second driving member, the difficulty in installing the key structure in the electronic equipment can be reduced. In addition, through separately setting up first driving piece and second driving piece, for setting up drive assembly into an integral piece, can make the structure of every part simpler after setting up into two parts, just so can reduce the processing degree of difficulty of every part, and then practice thrift manufacturing cost. In addition, the two parts are arranged, so that the flexibility of installation of each part can be improved, and the installation is convenient.

In an alternative implementation manner, at least one abutting part is arranged at one end of the first driving piece, which is close to the second driving piece; at least one abutting part is arranged at intervals along the direction from the third end to the fourth end of the driving assembly; each abutting part corresponds to one second driving piece.

By arranging at least one abutting part, at least one second driving piece can be correspondingly arranged, so that when the number of the second driving components is two, three or more, the driving force of the first driving piece can be dispersed to different second driving pieces, and further the stress on each second driving piece is smaller, and compared with the situation that only one second driving piece is arranged, the arrangement of a plurality of second driving pieces can prolong the service life of each second driving piece, and further prolong the service life of the key structure; of course, when a second driving member is provided, the structure of the second driving member can be simplified, and the cost of the key structure can be further reduced.

In an alternative implementation manner, the first driving piece is provided with a clamping part; the first end of the clamping part is positioned on one surface of the first driving piece, which is close to the second driving piece; the second end of the clamping part extends along the direction from the third end to the fourth end of the driving assembly and is far away from the first driving piece; or, the second end of the engaging portion extends in a direction from the fourth end to the third end of the driving assembly, and is away from the first driving member.

In an alternative implementation manner, one of the two clamping parts is located at the fourth end of the driving assembly, the first end of the clamping part is located at one surface of the first driving member, which is close to the second driving member, and the second end of the clamping part extends along the direction from the third end to the fourth end of the driving assembly in a direction away from the first driving member; the other of the two clamping parts is positioned at the third end of the driving assembly, the first end of the clamping part is positioned at one surface of the first driving piece, which is close to the second driving piece, and the second end of the clamping part extends along the direction from the fourth end to the third end of the driving assembly and is far away from the first driving piece.

The clamping part is arranged on the first driving piece, so that the first driving piece can be conveniently fixed on the electronic equipment.

In an alternative implementation, the switch includes a resilient portion; the first end of the elastic part is connected to the switch, and the second end of the elastic part protrudes towards the direction close to the transmission piece.

In an alternative implementation, the angle between the conduction direction of the switch and the direction of the first end to the second end of the drive assembly is 90 °.

In one possible implementation, the thickness of the switch in the on direction of the switch is less than the length of the switch in the first to second end direction of the drive assembly and less than the length of the switch in the third to fourth end direction of the drive assembly.

In an alternative implementation, the switch further includes a housing, a trigger assembly, and a circuit board; the trigger assembly is arranged between the elastic part and the circuit board, the shell is arranged on the outer side of the trigger assembly in a surrounding mode, one end, close to the circuit board, of the shell is fixedly connected with the circuit board, and one end, close to the elastic part, of the shell is fixedly connected with the elastic part.

The elastic part is arranged on the switch, so that the driving assembly and the transmission piece can rebound automatically after the key structure is pressed, and the key structure can be reused; through setting up trigger subassembly and circuit board to set up trigger subassembly between elastic component and circuit board, so that the elastic component can drive trigger subassembly and circuit board contact, and then make the circuit of circuit board switch on, make the switch be in the conduction state.

In an alternative implementation, the number of trigger components is at least one; at least one trigger assembly is arranged along the direction from the third end to the fourth end of the driving assembly at intervals, the outer side of each trigger assembly is provided with a shell in a surrounding mode, and one end, away from the circuit board, of each shell is provided with an elastic part.

The trigger point of the circuit board can be increased by arranging at least one trigger component, so that when one elastic piece or the trigger component is in a problem, other elastic pieces and the trigger component can enable the key structure to work normally, and the working stability of the key structure can be increased by arranging at least one elastic part.

In an alternative implementation manner, a guard plate is further arranged on the switch; the guard board is arranged at one end of the circuit board, which is far away from the elastic part, and is fixedly connected with the circuit board.

Through set up the backplate on the switch, can play certain guard action to the circuit board of switch to can improve the intensity of switch, and when installing the switch in the electronic equipment, the damage of circuit board can effectively be prevented to the protection shield.

In an alternative implementation, the material of the elastic portion is rubber.

The cost of the elastic part can be reduced by setting the material of the elastic part as rubber, and the rubber material has better elasticity and can be repeatedly used, so that the service life of the elastic part can be prolonged, and the service life of the key structure can be further prolonged.

A second aspect of the embodiments of the present application provides an electronic device, which at least includes a middle frame and any one of the above-mentioned key structures; the key structure is arranged on the middle frame, a part of the structure of the first end of the driving assembly is exposed out of the middle frame, and the second end of the driving assembly is positioned in the electronic equipment; the included angle between the direction from the first end to the second end of the driving component and the thickness direction of the electronic equipment is larger than zero, and the included angle between the conduction direction of the switch and the thickness direction of the electronic equipment is smaller than 90 DEG

According to the electronic equipment provided by the embodiment of the application, through the key structure of the first aspect, as the sliding direction of the driving component of the key structure is set along the x direction, and the conducting direction of the switch is also set along the x direction, the size of the switch in the thickness direction of the electronic equipment can be greatly reduced, so when the key device is arranged on the electronic equipment, the influence of the size of the switch of the key structure on the thickness of the electronic equipment is very small, so that the thickness of the electronic equipment can be set smaller, and the electronic equipment is favorable for the light and thin development of the electronic equipment.

In one possible implementation, an angle between a direction from the first end to the second end of the driving component and a thickness direction of the electronic device is 90 °; and an included angle between the conducting direction of the switch and the thickness direction of the electronic equipment is 0.

Therefore, the sliding direction of the driving component is perpendicular to the conducting direction of the switch, and the conducting direction of the switch is identical to the thickness direction of the electronic equipment, so that the occupied space of the switch in the thickness direction of the electronic equipment can be reduced, and the development of thinning of the electronic equipment is facilitated.

In one possible implementation, from the first end to the second end of the driving component, the maximum thickness of the key structure in the thickness direction of the electronic device is smaller than the length of the switch in the direction from the first end to the second end of the driving component and smaller than the length of the switch in the direction from the third end to the fourth end of the driving component.

Therefore, the space occupied by the key structure in the thickness direction of the electronic equipment is smaller, compared with the technical scheme that the conducting direction of the switch is perpendicular to the thickness direction of the electronic equipment in the related technology, the size of the switch in the thickness direction of the electronic equipment is smaller, so that the thickness of the electronic equipment can be smaller, and the thin development of the electronic equipment is facilitated.

In an alternative implementation manner, the middle frame is provided with a mounting part, and the key structure is mounted on the mounting part; the driving assembly is arranged in the mounting part in a sliding manner, and the switch is fixed on the mounting part.

In an alternative implementation, the mounting portion includes a first mounting portion and a second mounting portion; the first installation part is positioned outside the second installation part, and the first installation part and the second installation part are communicated; the first end of the driving assembly is located in the first mounting portion, the second end of the driving assembly is located in the second mounting portion, and the switch is fixed to the second mounting portion.

The installation part is arranged on the middle frame of the electronic equipment, so that a space is provided for the installation of the key structure, and the installation is convenient; through including first installation department and second installation department with the installation department setting to make drive assembly and switch all can install suitable position, in addition, through setting up first installation department and second installation department, can improve the design flexibility of installation department, in order to satisfy the demand of the shape of button structure.

In an alternative implementation manner, the first mounting part is provided with a clamping groove; the clamping groove extends from one surface of the first mounting part, which is close to the second mounting part, along the direction from the third end to the fourth end of the driving assembly to the direction away from the first mounting part; the driving assembly is connected with the clamping groove in a clamping mode.

The first mounting part is provided with the clamping groove so that the driving assembly is fixed inside the electronic equipment, and the driving assembly is prevented from falling off the electronic equipment, so that the mounting requirement of the key structure is met; the arrangement of the clamping groove can limit the movement range of the driving assembly.

Drawings

FIG. 1 is a schematic diagram of a mobile phone side key structure;

fig. 2 is a schematic structural diagram of an electronic device according to an embodiment of the present application;

FIG. 3 is a schematic diagram of an exploded structure of the electronic device shown in FIG. 2;

fig. 4A is a schematic structural diagram of a key structure according to an embodiment of the present disclosure;

FIG. 4B is a schematic view of another angle of the key structure according to an embodiment of the present disclosure;

FIG. 5 is an exploded view of the key structure of FIG. 4A;

fig. 6 is a schematic structural diagram of a driving component of a key structure according to an embodiment of the present application;

Fig. 7 is a schematic structural diagram of a transmission member with a key structure according to an embodiment of the present disclosure;

FIG. 8 is a schematic cross-sectional view of a driving member with a key structure according to an embodiment of the present disclosure;

fig. 9A is a schematic structural diagram of a switch with a key structure according to an embodiment of the present disclosure;

fig. 9B is a schematic cross-sectional view of a switch with a key structure according to an embodiment of the present disclosure;

FIG. 9C is a schematic sectional view of an exploded switch with a key structure according to an embodiment of the present disclosure;

FIG. 10 is a schematic cross-sectional view of a key structure according to an embodiment of the present disclosure;

FIG. 11 is a schematic view of a key structure mounted on a middle frame and partially sectioned along the x-z plane according to an embodiment of the present disclosure;

FIG. 12 is a schematic view of a key structure mounted on a middle frame and partially sectioned along an x-y plane according to an embodiment of the present disclosure;

FIG. 13 is a schematic view of a partial cross-sectional structure of a middle frame of an electronic device according to an embodiment of the present disclosure;

fig. 14 is a schematic view of a part of a structure of a middle frame of an electronic device according to an embodiment of the present disclosure;

FIG. 15 is a schematic view of a portion of a middle frame of an electronic device according to another embodiment of the present disclosure;

FIG. 16 is a schematic view of a portion of a key structure according to an embodiment of the present disclosure when the switch is switched from an off state to an on state;

FIG. 17 is a schematic view of a portion of a key structure according to an embodiment of the present disclosure, mounted on a middle frame, in the x-z plane;

FIG. 18 is a schematic view showing a partial cross-sectional structure of a key structure according to another embodiment of the present disclosure, which is mounted on a middle frame and is along an x-z plane.

Reference numerals illustrate:

1-side bond; 2-thimble; 3-a bracket;

4. 230-a switch; 5. 233-a circuit board; 6. 130-middle frame;

100-an electronic device; 110-a display screen; 120-rear cover;

131-frame; 132—a middle plate; 133-a mounting portion;

1331-a first mounting portion; 13311, 13311a, 13311 b-engaging grooves; 13312-headspace;

1332-a second mounting portion; 13321-convex walls; 1333-through holes;

1334-opening; 140-a main circuit board; 150-battery;

160-a camera device; 200-key structure; 210-a drive assembly;

210 a-a first end; 210 b-a second end; 210 c-a third end;

210 d-fourth end; 211-a first driving member;

211 a-a top end face; 2111. 2111a, 2111 b-engaging portions; 2112-abutment;

212-a second driver; 2121-a driving part; 2121 a-a tip of the driving portion;

2121 b-a bottom end of the driving portion; 21211-first bevel; 21212-first arcuate projection;

220-a transmission member; 221-a transmission part;

221 a-the bottom end of the transmission; 2211-a second ramp; 2212-a second arcuate projection;

2213-a third ramp; 222-a first connection;

223-a second connection; 231-an elastic part; 232-a trigger assembly;

2321-a carrier; 2322-an elastic member; 2323-triggers;

234-a housing; 240-guard board; 250-bonding layer;

2324-accommodation space.

Detailed Description

The terminology used in the description section of the present application is for the purpose of describing particular embodiments of the present application only and is not intended to be limiting of the present application.

Throughout the specification and claims, unless the context requires otherwise, the word "comprise" and its other forms such as the third person referring to the singular form "comprise" and the present word "comprising" are to be construed as open, inclusive meaning, i.e. as "comprising, but not limited to. In the description of the specification, the terms "one embodiment", "some embodiments", "example (examples)", or "some examples" and the like are intended to indicate that a particular feature, structure, material, or characteristic associated with the embodiment or example is included in at least one embodiment or example of the present disclosure. The schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

Furthermore, in this application, directional terms "front", "rear", etc. are defined with respect to the orientation in which the components are schematically disposed in the drawings, and it should be understood that these directional terms are relative concepts, which are used for description and clarity with respect thereto, and which may be varied accordingly with respect to the orientation in which the components are disposed in the drawings.

In the embodiment of the present application, "and/or" is merely an association relationship describing an association object, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

Along with the development of scientific technology, electronic products are updated more and more rapidly, and requirements on the appearance of mobile phones and the like in the market are higher and higher, users are pursuing extremely narrow-frame or borderless designs, so that the products are more concise and fashionable in appearance.

As shown in fig. 1, the mobile phone side key structure in the related art is that the thickness direction of the mobile phone is z-direction, the side key 1 and the thimble 2 are slidably arranged on the middle frame 6 along the x-direction, the conducting direction of the switch 4 is also x-direction, that is, the conducting direction of the switch 4 is the same as the sliding direction of the side key 1 and the thimble 2, and a bracket 3 can be further arranged between the thimble 2 and the switch 4.

For convenience of description, the on direction of the switch 4 is taken as the thickness direction of the switch 4, the length of the switch 4 in the z direction is taken as the length direction of the switch 4, the length of the bracket 3 in the z direction is taken as the length direction of the bracket 3, that is, the length directions of the switch 4 and the bracket 3 are the same as the thickness direction (that is, the z direction) of the mobile phone.

As shown in fig. 1, the length of the switch 4 and the support 3 greatly affects the development of the light and thin mobile phone, and in order to solve the above problem, the thickness of the mobile phone can be further reduced by adopting the technical scheme of the switch 4 and the support 3 with smaller size, however, it is difficult to produce the switch 4 and the support 3 with smaller size, and the production cost is greatly increased, so that the cost of the mobile phone is increased.

Based on this, this application embodiment provides a button structure and electronic equipment, and this button structure is through being greater than zero with the contained angle setting between the direction of switch's the direction of switch conduction direction and drive assembly's first end to the second end, then through the slip of driving assembly along drive assembly's first end to the second end direction, converts the reciprocating motion of driving assembly along the direction that has certain contained angle with the driving assembly direction of motion into to make the switch on or break off. Therefore, the size of the switch in the thickness direction of the electronic equipment can be greatly reduced, the influence of the size of the switch on the thickness of the electronic equipment is reduced, and the development of thinning of the electronic equipment is facilitated.

The embodiment of the application provides an electronic device, which may include, but is not limited to, a mobile terminal, a fixed terminal or a foldable terminal with a key structure, such as a mobile phone, a tablet computer, a notebook computer, an ultra-mobile personal computer (ultra-mobile personal computer, UMPC), a handheld computer, an interphone, a netbook, a POS (point of sale) machine, a personal digital assistant (personal digital assistant, PDA), a vehicle recorder, a security device, and the like.

In the embodiment of the present application, a mobile phone is taken as an example of the electronic device. The following describes the key structure and the electronic device provided in the embodiments of the present application in detail, taking the electronic device as an example of a mobile phone.

In the embodiment of the present application, the electronic device 100 is taken as an example of a mobile phone, and of course, the mobile phone may be a foldable mobile phone or a tablet mobile phone. The foldable mobile phone can be an inward folding mobile phone or an outward folding mobile phone.

In this embodiment, a straight mobile phone is taken as an example for explanation, as shown in fig. 2 and fig. 3, the mobile phone may include a display screen 110, a rear cover 120, and a middle frame 130 located between the display screen 110 and the rear cover 120, where a key structure 200 is disposed on the middle frame 130; a camera device 160 may also be disposed on the mobile phone, where the camera device 160 is located on one side of the mobile phone where the rear cover 120 is disposed, and the camera device 160 is used for a camera function of the mobile phone.

Referring to fig. 3, the mobile phone may further include: a main circuit board 140 and a battery 150. The main circuit board 140 and the battery 150 may be disposed on the middle frame 130, for example, the main circuit board 140 and the battery 150 may be disposed on a side of the middle frame 130 facing the rear cover 120, or the main circuit board 140 and the battery 150 may be disposed on a side of the middle frame 130 facing the display screen 110.

The battery 150 may be connected to the charge management module and the main circuit board 140 through a power management module, which receives input from the battery 150 and/or the charge management module and supplies power to the processor, the internal memory, the external memory, the display 110, the communication module, and the like. The power management module may also be configured to monitor battery 150 capacity, battery 150 cycle times, battery 150 health (leakage, impedance) and other parameters. In other embodiments, the power management module may also be provided in the processor of the main circuit board 140. In other embodiments, the power management module and the charge management module may be disposed in the same device.

The display 110 may be an Organic Light-Emitting Diode (OLED) display, a liquid crystal display (Liquid Crystal Display, LCD), an active matrix Organic Light-Emitting Diode (OLED) display, a flexible Light-Emitting Diode (flex-Emitting Diode) display, a MiniLED display, a Micro-OLED display, a quantum dot Light-Emitting Diode (QLED) display, or the like.

The rear cover 120 may be a metal rear cover, a glass rear cover, a plastic rear cover, or a ceramic rear cover, and in this embodiment, the material of the rear cover 120 is not limited.

Middle frame 130 may include middle plate 132 and border 131. The frame 131 may be disposed around the outer periphery of the middle plate 132. The frame 131 may include a top frame, a bottom frame, a left side frame, and a right side frame, the top frame, the bottom frame, the left side frame, and the right side frame enclose an annular frame 131, an installation portion 133 (see fig. 13) for installing the key structure 200 may be provided on the frame 131, and an opening 1334 may be provided on the installation portion 133, and the key structure 200 is installed on the middle frame 130 through the opening 1334. The middle plate 132 may be made of aluminum, aluminum alloy, or magnesium alloy, and the middle plate 132 is not limited to the material. The frame 131 may be a metal frame or a ceramic frame, and the material of the frame is not limited. The middle plate 132 and the frame 131 may be clamped, welded, glued or integrally formed, or the middle plate 132 and the frame 131 are fixedly connected by injection molding.

It should be noted that, in some other examples, the mobile phone may include, but is not limited to, the structure shown in fig. 3, for example, the mobile phone may include: the display 110, the middle plate 132, and the case may be a case formed by integrally molding (Unibody) the bezel 131 and the back cover 120. In this way, at least part of the structure of the camera device 160, the main circuit board 140 and the battery 150 can be located in the accommodating space enclosed by the display screen 110 and the housing.

It is to be understood that the structure illustrated in the embodiments of the present application does not constitute a specific limitation on the electronic device 100. In other embodiments, the electronic device may further include a plurality of components (not shown) mounted inside the electronic device. The plurality of components may include, for example, a processor, an internal memory, an external memory interface, a Universal Serial Bus (USB) interface, a charge management module, a power management module, a battery, an antenna, a communication module, a camera, an audio module, a speaker, a receiver, a microphone, an earphone interface, a sensor module, a key, a motor, an indicator, a Subscriber Identity Module (SIM) card interface, and the like.

As shown in fig. 2 and 3, the key structure 200 is disposed on the middle frame 130, and a part of the key structure 200 is exposed out of the middle frame 130, and another part of the key structure is disposed inside the middle frame 130, wherein the key structure 200 can be electrically connected with the main circuit board 140 of the mobile phone, so that the key structure 200 can control part of functions of the mobile phone, for example, can adjust the volume of the mobile phone, or control the on or off of the screen of the mobile phone.

The specific structure of the key structure 200 according to the embodiment of the present application is described in detail below.

Fig. 4A is a schematic structural diagram of a key structure according to an embodiment of the present application. Fig. 4B is a schematic view of another angle of the key structure according to an embodiment of the present application. Fig. 5 is an exploded view of the key structure shown in fig. 4A.

It should be noted that, in the embodiment of the present application, for convenience of description, a direction from the first end 210a to the second end 210b of the driving component 210 is taken as a length direction of the electronic device 100 and the key structure 200, i.e. an x direction in the drawing. The direction from the third end 210c to the fourth end 210d of the driving component 210 is taken as the width direction of the key structure 200 of the electronic device 100, i.e. the y direction in the figure. The thickness direction of the electronic device 100 and the thickness direction of the key structure 200 are both z-directions in the figure. It will be appreciated that both the x-direction and the y-direction are perpendicular to the z-direction.

Referring to fig. 4A, an embodiment of the present application provides a key structure 200, where the key structure 200 may include a driving assembly 210, a transmission member 220, and a switch 230; the driving assembly 210 and the transmission member 220 are movably disposed, and the driving assembly 210 can slide along the x direction relative to the transmission member 220, the conducting direction of the switch 230 is disposed along the z direction, that is, the thickness direction of the switch 230 is disposed along the z direction, the switch 230 is located at one side of the second end 210b of the driving assembly 210, and the conducting direction of the switch 230 is disposed along the thickness direction of the key structure 200, that is, the z direction in the drawing, the length direction of the switch 230 is disposed along the x direction, and the width direction of the switch 230 is disposed along the y direction; the transmission member 220 is slidably disposed between the switch 230 and the second end 210b of the driving assembly 210, and a surface of the transmission member 220, which is close to the driving assembly 210, is slidably connected to the driving assembly 210, and a surface of the transmission member 220, which is close to the switch 230, may be connected to the switch 230, and, illustratively, the transmission member 220 and the switch 230 may be fixedly connected to each other, for example, may be fixedly connected by glue or the like.

It should be noted that, in the embodiment of the present application, two objects of the sliding connection finger contact, but are not fixed, and can slide relatively.

As shown in fig. 4B, a side of the transmission member 220 facing the driving assembly 210 may be in contact with the driving assembly 210. Of course, in some embodiments, a gap may exist between the side of the transmission member 220 facing the driving assembly 210 and the driving assembly 210, and after the driving assembly 210 slides a distance along the x direction toward the direction approaching the transmission member 220, the transmission member 220 and the driving assembly 210 may be connected in contact.

As shown in fig. 5, the switch 230 may include a resilient portion 231, a trigger assembly (not shown), and a circuit board 233; the elastic portion 231 is disposed on a surface of the switch 230 near the transmission member 220, a first end of the elastic portion 231 is connected to the switch 230, and a second end of the elastic portion 231 protrudes toward a direction near the transmission member 220. And the elastic part 231 may abut against the driving member 220; the trigger assembly is disposed between the elastic portion 231 and the circuit board 233, and when the trigger assembly contacts the circuit board 233, the circuit of the circuit board 233 may be conducted. Exemplary, the angle between the conduction direction of the switch 230 and the direction of the first end 210a to the second end 210b of the driving assembly 210 is 90 DEG

In the present embodiment, the elastic portion 231 has elasticity, that is, the elastic portion 231 has an automatic rebound property. When the elastic portion 231 is pressed in the z direction toward the circuit board 233, the elastic portion 231 may be depressed toward the circuit board 233, and when the force pressing the elastic portion 231 is removed, the elastic portion 231 may return to its original shape by its own elasticity. Illustratively, the elastic portion 231 is made of an elastic material, for example, the elastic portion 231 may be made of rubber, which has good elasticity and is inexpensive, so that the cost of the key structure 200 can be reduced. Of course, in other embodiments, the elastic portion 231 may be provided in a structure having elasticity, for example, a metal sheet, a spring, or the like. As long as it can rebound automatically.

In one possible embodiment, a cover 240 may be further disposed on the switch 230, and an adhesive layer 250 may be further disposed between the cover 240 and the switch 230, where the adhesive layer 250 is used to fixedly connect the switch 230 and the cover 240, and the adhesive layer may be a glue layer applied on the cover 240 or the circuit board 233, for example. The protection plate 240 may be used to protect the switch 230, to improve the strength of the switch 230, and particularly, when the switch 230 is installed in the electronic device 100, the protection plate 240 may effectively prevent the circuit board 233 from being damaged, and exemplary materials of the protection plate 240 may be metal materials such as iron, copper, aluminum or alloy, or other non-metal materials, and the materials corresponding to the protection plate 240 are not limited in the embodiments of the present application. Of course, in some embodiments, the guard 240 may not be provided.

The transmission member 220 is disposed at the second end 210b of the driving assembly 210, and the transmission member 220 is disposed on a surface of the switch 230 where the elastic portion 231 is disposed. The thickness direction of the transmission member 220 is set in the z direction, the length direction of the transmission member 220 is set in the x direction, and the width direction of the transmission member 220 is set in the y direction.

Fig. 6 is a schematic structural diagram of a driving component of a key structure according to an embodiment of the present application. Fig. 7 is a schematic structural diagram of a transmission member with a key structure according to an embodiment of the present application. Fig. 8 is a schematic cross-sectional view of a transmission member with a key structure according to an embodiment of the disclosure.

As shown in connection with fig. 6, in this embodiment, the driving assembly 210 may include a first driving member 211 and a second driving member 212; one end of the first driving member 211 may be abutted to the second driving member 212, and the driving assembly 210 is movably disposed with the transmission member 220, including: the second driving member 212 and the transmitting member 220 are movably disposed. Illustratively, the second driver 212 and the transmission 220 are slidably disposed.

For example, the number of the second driving members 212 may be two, the two second driving members 212 may be disposed at intervals along the y-direction, and the second driving members 212 are abutted with the first driving members 211. Of course, in other embodiments, the number of second drivers 212 may be one, three, four, or more, without limitation to the number of second drivers 212.

By setting the number of the second driving members 212 to two, the driving force on each second driving member 212 can be reduced, so that the driving force on the first driving member 211 can be distributed to the two second driving members 212, and the pressure at the junction of the first driving member 211 and the second driving member 212 can be reduced, and thus the partial breakage of the first driving member 211 can be prevented. In addition, the provision of two second driving members 212 may reduce the driving force distributed on each second driving member 212 relative to the provision of one second driving member 212, thereby extending the service life of the driving assembly 210. Of course, if the number of the second driving members 212 is one, the structure of the second driving member 212 can be simplified, thereby reducing the cost of the key structure 200.

The first driving piece 211 and the second driving piece 212 may be fixedly connected by bonding, welding, riveting, integral molding, or the like. Of course, the first driver 211 and the second driver 212 may be only in contact connection (i.e., abutting), and thus, the connection manner between the first driver 211 and the second driver 212 is not limited in the embodiment of the present application.

In the present embodiment, the first end 210a of the driving assembly 210 is located on the first driving member 211 and located at an end of the first driving member 211 away from the second driving member 212, and the second end 210b of the driving assembly 210 is located on the second driving member 212 and located at an end of the second driving member 212 close to the switch 230.

By providing the driving assembly 210 in a structure including the first driving member 211 and the second driving member 212, that is, providing the driving assembly 210 as two parts smaller than the driving assembly 210 as a whole, the flexibility of installation of the driving assembly 210 can be improved, and thus the difficulty of installation can be reduced. Also, when one of the first and second driving members 211 and 212 is problematic, only the problematic component may be replaced without replacing the entire driving assembly 210 together, which may reduce maintenance costs. In addition, by providing the driving assembly 210 in a structure including the first driving member 211 and the second driving member 212, the processing difficulty of each component can be reduced, and thus the production cost can be saved, relative to providing the driving assembly 210 in one piece.

With continued reference to fig. 6, the first driving member 211 may have a bar-shaped structure, wherein a length direction of the bar-shaped structure may be along the y-direction (a direction from the third end 210c to the fourth end 210d of the driving assembly 210). An abutment portion 2112 is provided on a surface of the first driving member 211 facing the second driving member 212, and illustratively, two abutment portions 2112 are provided on a surface of the first driving member 211 facing the second driving member 212 at intervals along the y-direction, and each abutment portion 2112 may correspond to one second driving member 212, and the second driving member 212 and the abutment portion 2112 abut.

Of course, in other embodiments, the number of the abutment portions 2112 may be one, three, four, five, etc., and one second driver 212 may correspond to at least one abutment portion 2112, and for example, one second driver 212 may correspond to two abutment portions 2112. The number of the corresponding abutment portions 2112 of each second driver 212 may be determined according to the shape and the number of the second drivers 212, and is not particularly limited in this embodiment.

Illustratively, the abutment 2112 may be a columnar protrusion extending from a face of the first driver 211 toward the second driver 212 in a direction toward the second driver 212, the columnar protrusion being connected to the second driver 212. By providing the abutment portion 2112 on the first driving member 211, the position of the second driving assembly 212 can be determined by the position of the abutment portion 2112, so that the alignment is easy during installation, and the connection between the first driving member 211 and the second driving member 212 can be facilitated, so that the connection relationship between the first driving member 211 and the second driving member 212 is more stable. In addition, by providing the abutment portion 2112, the size of the first driving member 211 or the second driving member 212 in the x-direction can be reduced, which saves materials, reduces the weight and volume of the first driving member 211 or the second driving member 212, and is convenient to install and reduces the cost compared with the case that the abutment portion 2112 is not provided.

In addition, in some embodiments, the first driving member 211 may further include a fastening portion 2111, where a first end of the fastening portion 2111 is located on a surface of the first driving member 211 near the second driving member 212; the second end of the engaging portion 2111 extends along the direction from the third end 210c to the fourth end 210d of the driving assembly 210, in a direction away from the first driving member 211; alternatively, the second end of the engaging portion 2111 extends away from the first driver 211 along the direction from the fourth end 210d to the third end 210c of the driver 210.

For example, the number of the engaging portions 2111 may be two, which are the engaging portions 2111a and the engaging portions 2111b, respectively. The engaging portion 2111a is located at the fourth end 210d of the driving assembly 210, the first end of the engaging portion 2111a is located on a surface of the first driving member 211 close to the second driving member 212, and the second end of the engaging portion 2111a extends in a direction from the third end 210c to the fourth end 210d of the driving assembly 210 to a direction away from the first driving member 211, and illustratively, the engaging portion 2111a extends to an outer side of a top end surface 211a of the first driving member 211 in the y direction.

The engaging portion 2111b is located at the third end 210c of the driving assembly 210, the first end of the engaging portion 2111b is located on a surface of the first driving member 211 near the second driving member 212, and the second end of the engaging portion 2111b extends along the direction from the fourth end 210d to the third end 210c of the driving assembly 210 in a direction away from the first driving member 211, and illustratively, the engaging portion 2111b extends to a position flush with the top end surface 211a of the first driving member 211 in the y direction.

Of course, in some embodiments, the positions of the engaging portions 2111a and 2111b may be interchanged.

The engaging portion 2111a is extended to the outside of the distal end surface 211a of the first driver 211 in the y direction, and the engaging portion 2111b is extended to a position flush with the distal end surface 211a of the first driver 211 in the y direction, so that the first driver 211 can be mounted on the electronic device, and then the key structure 200 is prevented from falling off the electronic device by the engaging portion 2111a extending to the outside of the distal end surface 211a of the first driver 211 in the y direction and engaged with the electronic device. Of course, a stop member may be further disposed at a position extending to the engaging portion 2111b flush with the distal end surface 211a of the first driving member 211 in the y direction, so as to prevent the key structure 200 from falling off the electronic device, which is not specifically limited in the embodiment of the present application.

The shape of the engaging portion 2111a and the engaging portion 2111b may be the same or different, and in the present embodiment, the shape of the engaging portion 2111a and the engaging portion 2111b is not particularly limited.

In some embodiments, the second driving member 212 may be a rod-shaped structure, and the central axis of the rod-shaped structure is disposed along the x-direction, one end of the second driving member 212 is connected to the first driving member 211, the other end is connected to the transmission member 220, and the second driving member 212 and the transmission member 220 may slide relatively.

In some embodiments, a driving portion 2121 may be further disposed on the driving assembly 210, and for example, the driving portion 2121 may be disposed at an end of the second driving member 212 near the transmission member 220.

The driving part 2121 is a first inclined surface 21211 disposed at an end of the second driving member 212 near the transmission member 220, wherein the first inclined surface 21211 gradually inclines away from the switch 230 along a direction from the first end 210a to the second end 210b of the driving assembly 210, wherein a point from the driving part 2121 to the switch 230 where the distance from the driving part is smallest is a top end 2121a of the driving part, a point from the driving part 2121 to the switch 230 where the distance from the switch 230 is largest is a bottom end 2121b of the driving part, and a point from the transmission part 221 to the switch 230 where the distance from the switch 230 is largest is a bottom end 221a of the transmission part 221 in a direction perpendicular to the direction from the first end 210a to the second end 210b of the driving assembly.

As shown in fig. 7, the transmission member 220 may be a plate-shaped structure, wherein a thickness direction of the plate-shaped structure is along a z-direction, and an exemplary direction in which a length of the plate-shaped structure is maximized may be along a direction (i.e., along a y-direction) from the third end 210c to the fourth end 210d of the driving assembly 210, so that the second driving member 212 and the transmission member 220 may be conveniently coupled. The transmission member 220 is provided with a first connection portion 222 and a second connection portion 223 protruding in the z direction in a direction approaching the switch 230 on a side facing the switch 230.

For example, the number of the first connection parts 222 may be two, and the thickness of the second connection part 223 in the z-direction is greater than that of the first connection part 222 in the z-direction. And the thickness difference between the second connection portion 223 and the first connection portion 222 in the z-direction is at least greater than the distance from the end of the elastic portion 231 near the driving member 220 to the side of the circuit board 233 near the driving member 220. Thereby avoiding switch 230 being too sensitive or avoiding switch 230 not being able to reach the open state.

The second connection portion 223 is illustratively located at a center of the transmission member 220 along the y direction, however, in other embodiments, the second connection portion 223 may be located at other positions, for example, the second connection portion 223 is located at a position near the center of the transmission member 220 along the y direction, or is located at one end of the transmission member 220 along the y direction, etc., and the specific position of the second connection portion 223 is not limited in this embodiment.

The second connection portion 223 may be fixedly connected to the circuit board 233 of the switch 230, and since the thickness of the second connection portion 223 along the z-direction is greater than that of the first connection portion 222, after the second connection portion 223 is fixedly connected to the circuit board 233 of the switch 230, both ends of the transmission member 220 along the y-direction may be suspended from the circuit board 233 (i.e., a gap exists between both ends of the transmission member 220 along the y-direction and the circuit board 233), so that when both ends of the transmission member 220 receive a driving force in the y-direction toward the circuit board 233, the two ends of the transmission member 220 may move in the z-direction relative to the circuit board 233 of the switch 230, and when the driving force disappears, the transmission member 220 may return to its original position by virtue of its rigidity or elasticity. Wherein, the movement of the driving member 220 along the z direction can control the switch 230 to be turned on or off, and for example, the driving member 220 can switch on the switch 230 when moving towards the direction approaching to the switch 230, and the driving member 220 can switch the switch 230 from the on state to the off state when moving away from the switch 230.

For example, the number of the first connection parts 222 may be two, and the two first connection parts 222 are disposed at both sides of the second connection part 223 at intervals in the y-direction, and the first connection parts 222 are connected with the elastic parts 231 of the switches 230. In some embodiments, the number of the first connecting portions 222 may be one, three, four or more, and the number of the first connecting portions 222 is not limited, and the driving member 220 may be directly connected to the elastic portion 231 of the switch 230 without providing the first connecting portions 222. By providing the first connection portion 222, the transmission member 220 and the elastic portion 231 of the switch 230 can be tightly connected during installation, so as to improve the accuracy of the movement of the key structure 200. In addition, one elastic portion 231 may correspond to one first connection portion 222, or may correspond to a plurality of first connection portions 222, and in this embodiment, the number of first connection portions 222 corresponding to the elastic portion 231 is not limited.

In addition, the transmission member 220 may further include a transmission portion 221, wherein the transmission portion 221 is disposed on a surface of the transmission member 220 in contact with the driving portion 2121, and the transmission portion 221 is disposed opposite to the driving portion 2121, and as illustrated in fig. 8, the transmission portion 221 is disposed on a side of the first connection portion 222 of the transmission member 220, which is close to the second driving member 212, and the transmission portion 221 may be a second inclined surface 2211, and the second inclined surface 2211 is cooperatively connected with the first inclined surface 21211 and is capable of sliding relatively. The second inclined surface 2211 is inclined in a direction away from the switch 230 in a direction from the first end to the second end 210b of the driving assembly 210, that is, the second inclined surface 2211 and the first inclined surface 21211 have the same inclination direction, so that the second inclined surface 2211 can be cooperatively connected with the first inclined surface 21211.

The number of the transmission parts 221 and the number of the first connection parts 222 may be the same or different; the number of the transmission parts 221 and the number of the driving parts 2121 may be the same or different. The number of the specific transmission parts 221, the first connection parts 222, and the driving parts 2121 may be specifically set according to the specific circumstances, and is not specifically limited in the present embodiment.

By arranging the transmission member 220 in a plate-shaped structure, and arranging the transmission member 220 with the largest length in the y-direction at the second end 210b of the driving assembly 210, the thickness direction of the transmission member 220 is arranged in the z-direction, so that the thickness of the entire key structure 200 in the z-direction can be reduced, and when the key structure 200 is mounted in the electronic device 100, the mounting space of the key structure 200 in the thickness direction can be reduced, that is, the electronic device 100 can accommodate the key structure 200 by only providing a smaller space in the z-direction, so that the thickness of the electronic device 100 in the z-direction can be set smaller, thereby being beneficial to the light and thin development and miniaturization of the electronic device 100.

Fig. 9A is a schematic structural diagram of a switch with a key structure according to an embodiment of the present application. Fig. 9B is a schematic cross-sectional view of a switch with a key structure according to an embodiment of the present application. Fig. 9C is a schematic sectional view of an exploded switch with a key structure according to an embodiment of the present application.

As shown in fig. 9A, 9B and 9C, the switch 230 may further include a housing 234, where the housing 234 is enclosed on the outer side of the trigger assembly 232, and the housing 234 is located between the elastic portion 231 and the circuit board 233, and one end of the housing 234 is fixedly connected to the circuit board 233, and the other end is connected to the elastic portion 231. Illustratively, a cavity (not shown) is formed between the housing 234, the spring 231, and the circuit board 233 in which the trigger assembly 232 is mounted. The trigger assembly 232 is disposed in the cavity, and the trigger assembly 232 is connected to the elastic portion 231, so that the elastic portion 231 can drive the trigger assembly 232 to move along the z direction. For example, when the elastic portion 231 is driven to move toward the circuit board 233, the elastic portion 231 pushes the trigger assembly 232 to move toward the circuit board 233, and when the trigger assembly 232 contacts the circuit board 233, the circuit of the circuit board 233 is turned on, i.e., the switch 230 is in the on state. When the driving force of the elastic portion 231 disappears, the elastic portion 231 automatically rebounds, and the triggering assembly 232 can be restored to the original position under the driving of the elastic portion 231 because the elastic portion 231 and the triggering assembly 232 are in the connected state.

As shown in fig. 9B and 9C, the triggering assembly 232 includes: the circuit board 233 is provided with a trigger piece 2323, wherein one surface of the trigger piece 2323 is connected with the circuit board 233, the other surface of the trigger piece 2323 is connected with the elastic portion 231, one surface of the trigger piece 2323, which faces away from the circuit board 233, is provided with an accommodating space 2324 for accommodating the elastic piece 2322, the outer side edge of the elastic piece 2322 is fixed on the inner wall of the accommodating space 2324, a gap exists between one surface of the elastic piece 2322, which is close to the trigger piece 2323, and the inner wall of the trigger piece 2323, the elastic piece 2322 has elasticity, the elastic piece 2322 can move in the z direction in the gap between the elastic piece 2322 and the inner wall of the trigger piece 2323, the carrier piece 2321 is arranged on one surface, which is close to the elastic portion 231, of the elastic piece 2321 is connected with the elastic portion 231, and the other surface of the carrier piece 2321 is connected with the elastic piece 2322, and the carrier piece 2321 can be used for transmitting driving force of the elastic portion 231 to the elastic piece 2322 to enable the elastic piece 2322 to move along the z direction towards the direction, which is close to the trigger piece 2323, and the trigger piece 2323 can be pressed, when the trigger piece 2323 and the trigger piece 2323 are contacted with the circuit board 233, and the circuit board 233 can be conducted, so that the circuit board 230 can be conducted.

It is understood that the internal structure of the triggering component 232 is not specifically limited in this embodiment, and any triggering component 232 that can trigger the circuit of the circuit board 233 belongs to the protection scope of the present application.

In some embodiments, the number of the elastic parts 231 may be two, two elastic parts 231 are disposed on the circuit board 233 at intervals, and one trigger assembly 232 (not shown) may be disposed between each elastic part 231 and the circuit board 233. By providing two elastic parts 231, the connection position between the switch 230 and the driving member 220 can be increased, so that when one of the elastic parts 231 or the triggering assembly 232 is in a problem, the other elastic parts 231 and the triggering assembly 232 can also make the key structure 200 work normally, so that the working stability of the key structure 200 can be increased by providing two elastic parts 231.

In addition, by providing two elastic parts 231, the trigger points of the circuit board 233 can be increased, and different trigger points can correspond to different functions, so that the functions of the key structure 200 can be more, and thus, the application scenarios of the key structure 200 can be more. Of course, in other embodiments, the number of the elastic parts 231 may be one, three, four or more, and the number of the elastic parts 231 is not limited in this embodiment.

For example, the elastic portion 231 may be a protrusion structure, a first end of which is connected to the housing 234, and a second end of which extends away from the circuit board 233, and a tip of which may abut against the driving member 220. Illustratively, the tip of the second end of the protruding structure may abut the first connection portion 222. The connection manner between the elastic portion 231 and the first connection portion 222 of the transmission member 220 is not specifically limited in this embodiment, and the connection manner between the transmission member 220 and the elastic portion 231 may be fixedly connected by bonding, welding, or the like, or may be movably connected.

In some embodiments, the material of the elastic portion 231 and the material of the housing 234 may be the same, for example, may be rubber materials, which may save costs. The elastic portion 231 and the housing 234 may be fixedly connected by adhesion, welding, integral molding, or the like, and may be specifically set according to circumstances, and in this embodiment, the connection manner between the elastic portion 231 and the housing 234 is not particularly limited.

Fig. 10 is a schematic cross-sectional view of a key structure according to an embodiment of the present disclosure.

As shown in fig. 10, the key structure 200 is disposed on the middle frame 130 of the electronic device 100, and one end of the key structure 200, where the switch 230 is disposed, is located inside the middle frame 130, and a part of the other end of the key structure 200 is exposed out of the middle frame 130.

For example, the driving assembly 210 may be slidably disposed on the middle frame 130 of the electronic device 100 along the x-direction, and a surface of the first end 210a of the driving assembly 210 away from the second end 210b of the driving assembly 210 is located outside the middle frame 130, and the second end 210b of the driving assembly 210 is located inside the middle frame 130. The transmission member 220 and the switch 230 are both positioned on one side of the second end 210b of the drive assembly 210; the transmission member 220 is disposed between the driving assembly 210 and the switch 230, and the transmission portion 221 of the transmission member 220 is coupled to the driving portion 2121 of the driving assembly 210, and the other end of the transmission member 220 is coupled to the switch 230.

In the key structure 200 of the embodiment of the present application, compared with the technical scheme that in the conventional key structure 200, the conduction direction of the switch 230 is set to be the same as the sliding direction of the driving component 210, in the embodiment of the present application, the conduction direction of the switch 230 and the sliding direction of the driving component 210 are set to be perpendicular to each other, that is, the conduction direction (i.e., the thickness direction) of the switch 230 and the thickness direction of the driving component 210 are set to be the same, the switch 230 is set to one side of the driving component 210, the driving force of the driving component 210 along the x direction is changed into the driving force along the z direction by using the transmission piece 220, and then the driving switch 230 can be switched between the off state and the on state.

This not only satisfies the functions of the switch 230 of the key structure 200, but also reduces the influence of the size of the switch 230 itself on the thickness of the key structure 200. Because the key structure 200 is required to be installed in the electronic device 100 when in use, the key structure 200 with smaller thickness can be installed in the electronic device 100 with smaller thickness, thus the light and thin development of the electronic device 100 can be promoted, and the key structure 200 in the embodiment of the application has simple structure and is convenient to install.

It should be noted that, the included angle between the conducting direction of the switch 230 and the sliding direction of the driving assembly 210 (i.e. the direction from the first end to the second end of the driving assembly) includes, but is not limited to, 90 °, and in some embodiments, the included angle between the conducting direction of the switch 230 and the sliding direction of the driving assembly 210 may also be other values, for example: 80 degrees, 70 degrees, 60 degrees and the like belong to the protection scope of the technical scheme of the application as long as the angle is larger than zero.

Fig. 11 is a schematic view of a partial cross-sectional structure of a key structure mounted on a middle frame in an x-z plane according to an embodiment of the present application. Fig. 12 is a schematic view of a partial cross-sectional structure of a key structure mounted on a middle frame in an x-y plane according to an embodiment of the present application. Fig. 13 is a schematic view of a partial cross-sectional structure of a middle frame of an electronic device according to an embodiment of the present disclosure. Fig. 14 is a schematic view of a part of a structure of a middle frame of an electronic device according to an embodiment of the present application. Fig. 15 is a schematic view of a part of a middle frame of an electronic device according to another embodiment of the present disclosure.

As shown in fig. 11, the first driver 211 and the second driver 212 abut, and illustratively, the abutting portion 2112 of the first driver 211 abuts the second driver 212; the second driving member 212 abuts against the transmission member 220, and illustratively, the driving portion 2121 on the second transmission member 220 abuts against the transmission portion 221 on the transmission member 220; one surface of the transmission member 220 facing the switch 230 is in contact with the elastic portion 231 of the switch 230, and the trigger assembly 232 is arranged between the elastic portion 231 and the circuit board 233; the circuit board 233 is fixedly disposed on the middle frame 130, and the cover 240 is fixed to a surface of the circuit board 233 away from the elastic portion 231. The guard 240 may be used to protect the circuit board 233 of the switch 230.

Wherein, the thickness of the surface of the driving part 2121 connected to the transmission part 221 in the direction from the first end 210a to the second end 210b of the driving assembly 210 is gradually reduced; the thickness of the surface of the transmission part 221 connected to the driving part 2121 in the direction from the first end 210a to the second end 210b of the driving unit 210 becomes gradually larger.

In some embodiments, the mating surface between the driving portion 2121 of the driving assembly 210 and the transmission portion 221 of the transmission member 220 may be an inclined surface, and illustratively, the driving portion 2121 is provided with a first inclined surface 21211, the transmission portion 221 is provided with a second inclined surface 2211, the first inclined surface 21211 on the driving portion 2121 is cooperatively connected with the second inclined surface 2211 on the transmission portion 221, and the first inclined surface 21211 is inclined in a direction from the first end 210a to the second end 210b of the driving assembly 210, in a direction away from the switch 230; the second inclined surface 2211 is inclined away from the switch 230 in a direction from the first end 210a to the second end 210b of the driving assembly 210. That is, the first inclined surface 21211 and the second inclined surface 2211 have the same inclination direction.

It will be appreciated that the structures of the driving portion 2121 and the transmission portion 221 include, but are not limited to, inclined structures, and in other embodiments, the driving portion 2121 and the transmission portion 221 may be other shaped structures, so long as the front projection of the driving portion 2121 in the direction from the first end 210a to the second end 210b of the driving assembly 210 and the front projection of the transmission portion 221 in the direction from the first end 210a to the second end 210b of the driving assembly 210 at least partially overlap, and the front projection of the driving portion 2121 in the on direction of the switch 230 and the front projection of the transmission portion 221 in the on direction of the switch 230 at least partially overlap, so that when the driving assembly 210 is pressed in the direction from the first end 210a to the second end 210b of the driving assembly 210, the driving assembly 210 can drive the transmission member 220 to move in a direction perpendicular to the direction from the first end 210a to the second end 210b of the driving assembly 210 toward the switch to turn on the switch 230. Therefore, the specific structures of the driving portion 2121 and the transmitting portion 221 are not particularly limited in the present embodiment.

Illustratively, the angle between the direction of the first end 210a to the second end 210b of the driving assembly 210 and the thickness direction of the electronic device 100 may be 90 °; the angle between the conducting direction of the switch 230 and the thickness direction of the electronic device 100 may be 0. That is, the conducting direction of the switch 230 is the same as the thickness direction of the electronic device 100, and the conducting direction of the switch 230 is perpendicular to the direction from the first end 210a to the second end 210b of the driving assembly 210.

By having the conduction direction of the switch 230 be the same as the thickness direction of the electronic device 100, the conduction direction of the switch 230 is perpendicular to the direction from the first end 210a to the second end 210b of the driving assembly 210. Compared with the direction of the switch 230 and the thickness direction of the electronic device 100 having a certain angle, the angle between the direction of the switch 230 and the direction from the first end 210a to the second end 210b of the driving component 210 is smaller than 90 ° (e.g., 80 °), so that the occupied space of the key structure 200 in the thickness direction of the electronic device 100 can be minimized, which is beneficial to the development of the light and thin electronic device 100.

It should be noted that, the thickness of the switch 230 in the conducting direction (z direction) is smaller than the length of the switch 230 in the direction (x direction) from the first end 210a to the second end 210b of the driving component 210, and is smaller than the length of the switch 230 in the direction (y direction) from the third end 210c to the fourth end 210d of the driving component 210. By setting the on direction of the switch 230 to be the same as the thickness direction of the electronic device 100, the space occupied by the switch 230 in the thickness direction of the electronic device 100 can be reduced. Since the switch with smaller length and width is produced, a larger cost is required to be input in the related art, but in the embodiment of the present application, the switch 230 in the related art can be used only by adjusting the setting direction of the switch 230, so there is no risk of increasing the cost. The dimensions of other accessories (e.g., the driving assembly and the transmission member) can be flexibly set according to the needs, and the cost is not increased because the other accessories (e.g., the driving assembly and the transmission member) are all common mechanical accessories, and the design flexibility of the accessories is high, which is beneficial to further reducing the thickness of the electronic device 100 and the development of the slimness of the electronic device 100.

In some embodiments, the maximum thickness of the key structure 200 in the thickness direction of the electronic device from the first end 210a to the second end 210b of the driving component 210 is smaller than the length of the switch 230 in the direction from the first end 210a to the second end 210b of the driving component 210, and smaller than the length of the switch 230 in the direction from the third end 210c to the fourth end 210d of the driving component 210.

This further ensures that the thickness of the electronic device 100 can be effectively reduced by setting the on direction of the switch 230 to be the same as the thickness direction of the electronic device 100. Of course, in some embodiments, in order to further reduce the space occupied by the key structure 200 in the thickness direction of the electronic device 100, the second driving member 212 may also be configured in a bent structure (not shown in the drawing), and, by way of example, an end of the second driving member 212 near the transmission member 220 is bent along the z direction toward an end far from the transmission member 220, so that the space occupied by the key structure 200 in the thickness direction of the electronic device 100 may also be reduced.

Of course, in some embodiments, the angle between the direction from the first end 210a to the second end 210b of the driving component 210 and the thickness direction of the electronic device may be other values, and the angle between the conducting direction of the switch 230 and the thickness direction of the electronic device may be other values. The included angle between the direction from the first end 210a to the second end 210b of the driving component 210 and the thickness direction of the electronic device is greater than zero, and the included angle between the conducting direction of the switch 230 and the thickness direction of the electronic device is less than 90 °, which belongs to the protection scope of the technical scheme of the present application.

As shown in fig. 13, the middle frame 130 is provided with a mounting portion 133 for mounting the key structure 200; wherein the mounting portion 133 may include a first mounting portion 1331 and a second mounting portion 1332, the second mounting portion 1332 is located at an inner side of the first mounting portion 1331, and the first connection portion 222 and the second connection portion 223 are communicated, illustratively, the first mounting portion 1331 and the second mounting portion 1332 may be communicated through a through hole 1333, wherein an inner diameter of the through hole 1333 may accommodate the second driving piece 212 and the abutting portion 2112 of the first driving piece 211, such that the second driving piece 212 may be connected with the abutting portion 2112 of the first driving piece 211 through the through hole 1333.

Illustratively, two through holes 1333 are provided on the first driver 211 at intervals along the y-direction, and a plane between the two abutting portions 2112 may be used to limit the sliding distance of the first driver 211, that is, the first driver 211 may stop sliding when the plane between the two abutting portions 2112 contacts a portion not communicating between the first mounting portion 1331 and the second mounting portion 1332.

Of course, the first mounting portion 1331 and the second mounting portion 1332 may also be communicated by other structures, and the specific structure may be set according to the specific structure of the second driving member 212, which is not specifically limited in this embodiment.

As shown in fig. 12, the first driver 211 is slidably disposed in the x-direction within the first mount 1331, and the second driver 212 is slidably disposed in the x-direction within the second mount 1332; the transmission member 220 and the switch 230 are both disposed in the second mounting portion 1332, and the switch 230 is fixedly connected to the second mounting portion 1332, and the transmission member 220 is slidably disposed between the switch 230 and the second driving member 212 along the z-direction.

As illustrated in fig. 14, the second mounting portion 1332 may include a convex wall 13321 protruding in a direction approaching the switch 230 in the z-direction, and the conductive direction of the switch 230 may be the same as the protruding direction of the convex wall 13321; the circuit board 233 of the switch 230 is mounted on the protruding wall 13321 and fixedly connected to the protruding wall 13321 (see fig. 11), wherein the transmission member 220 can be fixed to the circuit board 233 via the second connection 223. As shown in fig. 15, an opening 1334 communicating with the first mounting portion 1331 is provided on the outer side of the middle frame 130, and the first end 210a of the driving unit 210 can be exposed to the middle frame 130 through the opening 1334.

Referring to fig. 12 and 13, the first mounting portion 1331 is provided with an engaging groove 13311, and a part of the structure of the driving unit 210 is engaged in the engaging groove 13311, so that the driving unit 210 is fixed in the mounting portion 133 of the middle frame 130. Illustratively, the number of the engaging grooves 13311 is two, namely the engaging grooves 13311a and the engaging grooves 13311b, the engaging grooves 13311a and the engaging grooves 13311b are respectively arranged at two ends of the first mounting part 1331 along the y direction, the engaging parts 2111a on the first driving member 211 of the driving assembly 210 are arranged in the engaging grooves 13311a of the first mounting part 1331, and the engaging parts 2111b are arranged in the engaging grooves 13311b of the first mounting part 1331, so that the first driving member 211 can be in engaged connection with the middle frame 130, and the first driving member 211 is prevented from falling off from the middle frame 130.

Illustratively, the engaging portion 2111a extends to an outer side of the distal end surface 211a of the first driving member 211 in the y direction (i.e., a portion of the orthographic projection of the engaging portion 2111a in the x direction is located at an outer side of the orthographic projection of the first driving member 211 in the x direction), and in the off state of the switch 230, a surface of the engaging portion 2111a near the first end 210a of the driving member 210 is in engaged connection with an inner wall of the engaging groove 13311a near the first end 210a of the driving member 210, and a gap exists between a surface of the engaging portion 2111a near the second end 210b of the driving member 210 and an inner wall of the engaging groove 13311a near the second end 210b of the driving member 210, and the gap may be a space in which the engaging portion 2111a slides in the x direction within the engaging groove 13311 a.

The engaging portion 2111b is located in the engaging groove 13311b, and the tip end surface of the engaging portion 2111b in the y direction and the tip end surface 211a of the first driver 211 in the y direction may be flush, however, the tip end surface of the engaging portion 2111b in the y direction may also be located inside the tip end surface 211a of the first driver 211 in the y direction (i.e., the orthographic projection of the engaging portion 2111b in the x direction is entirely located on the orthographic projection of the first driver 211 in the x direction), so that when the first driver 211 is assembled into the first mounting portion 1331, the engaging portion 2111a may be first mounted into the engaging groove 13311a, and then the engaging portion 2111b may be pushed into the engaging groove 13311b of the first mounting portion 1331 in the x direction, and if the tip end surface of the engaging portion 2111b in the y direction is also located outside the tip end surface 211a of the first driver 211 in the y direction, the first driver 211 cannot be mounted into the first mounting portion 1331. The shape of the engaging portions 2111a and 2111b facilitates mounting the first driver 211 into the first mounting portion 1331. Of course, the positions of the engaging portions 2111a and 2111b may be interchanged.

As shown in fig. 12, a reserved space 13312 exists between a surface of the engaging portion 2111b near the first end 210a of the driving assembly 210 and a surface of the engaging groove 13311b near the first end 210a of the driving assembly 210, the reserved space 13312 may be used for installing a stopper (not shown in the drawings), the stopper may be installed in the engaging groove 13311b and abutted with an inner wall of the engaging groove 13311b, and a part of the structure of the stopper protrudes into the reserved space 13312, so that one end of the first driving member 211 where the engaging portion 2111b is provided is limited in the first installation portion 1331 by the engaging portion 2111 b. The part of the structure of the stopper located in the reserved space 13312 may be attached to the engaging portion 2111b and the engaging groove, so as to prevent the first driving member 211 from shaking or falling off when in the first mounting portion 1331. A gap is also formed between a surface of the engaging portion 2111b adjacent to the second end 210b of the driving unit 210 and an inner wall of the engaging groove 13311b adjacent to the second end 210b of the driving unit 210, and the gap can be used as a movable space in which the engaging portion 2111b moves in a telescopic manner in the engaging groove 13311 b.

The structure of the stopper may be a sickle-shaped structure or a T-shaped structure, so long as the first driving member can be limited to the first mounting portion, and the structure of the stopper is not particularly limited in the embodiment of the present application. The connection between the first driver and the first mounting portion may be, but is not limited to, any one of those described in the above embodiments, as long as the first driver is slidably disposed in the first mounting portion.

By providing the engaging groove 13311 on the first mounting portion 1331, so as to fix the driving assembly 210 inside the electronic device 100, the driving assembly 210 is prevented from falling off the electronic device 100, so as to meet the mounting requirement of the key structure 200. In addition, the length of the engaging slot 13311 along the x-direction may also be used to limit the range of motion of the driving assembly 210.

By providing the mounting portion 133 on the middle frame 130 of the electronic device 100, a mounting space for the key structure 200 can be provided, and installation is convenient; by providing the mounting portion 133 including the first mounting portion 1331 and the second mounting portion 1332, both the driving assembly 210 and the switch 230 can be mounted to appropriate positions, and the sliding trajectory of the driving assembly 210 in the x direction is restricted by the structure of the mounting portion 133, and in addition, by providing the first mounting portion 1331 and the second mounting portion 1332, the design flexibility of the mounting portion 133 can be improved to satisfy the shape requirement of the key structure 200.

The process of switching the switch 230 of the key structure 200 from the off state to the on state will be described with reference to the accompanying drawings.

Fig. 16 is a schematic view of a partial cross-sectional structure of a switch from an off state to an on state when a key structure according to an embodiment of the present disclosure is mounted on a middle frame.

In a perpendicular direction to the direction from the first end 210a to the second end 210b of the driving assembly 210, a point from the first inclined surface 21211 to the switch 230 where a distance from the first inclined surface 21211 is smallest is a top end 21211a (refer to fig. 6) of the first inclined surface 21211, and a point from the second inclined surface 2211 to the switch 230 where a distance from the second inclined surface 2211 is largest is a bottom end 2211a (refer to fig. 8) of the second inclined surface 2211.

As shown in fig. 16, when the switch 230 is in the off state (the state shown in the upper portion of fig. 16), the bottom end 2211a of the second inclined surface 2211 and the top end 21211a of the first inclined surface 21211 are separated by a first distance h in the direction from the first end 210a to the second end 210b of the driving assembly 210.

When the first driving member 211 of the key structure 200 is pressed in a direction approaching the second end 210b of the driving assembly 210, the first driving member 211 and the second driving member 212 can be driven to move in the x direction approaching the second end 210b of the driving assembly 210, wherein the solid line with an arrow in the second mounting portion 1332 in the drawing is a moving direction of a movable component on the key structure 200, and when the driving portion 2121 on the second driving member 212 moves in the x direction approaching the second end 210b of the driving assembly 210, the first inclined surface 21211 also moves in the x direction approaching the second end 210b of the driving assembly 210, and the second inclined surface 2211 moves in the x direction due to the fixed connection of the driving member 220 and the circuit board 233.

Therefore, when the driving unit 210 slides in a direction from the first end 210a to the second end 210b of the driving unit 210 toward the transmission member 220, the first arc-shaped protrusion 21212 applies a force to the transmission portion 221, so that the second inclined surface 2211 slides in a direction from the first inclined surface 21211 toward the tip 21211a of the first inclined surface 21211, so that the transmission member 220 moves toward the switch 230, the first distance h becomes smaller gradually, and when the trigger unit 232 contacts the circuit board 233, the circuit of the switch 230 is turned on, and the switch 230 is switched from the off state to the on state (the lower illustrated state in fig. 16).

When the switch 230 is in the on state, the top end 21211a of the first inclined surface 21211 and the bottom end 2211a of the second inclined surface 2211 are spaced apart from each other by a second distance h in a direction from the first end 210a to the second end 210b of the driving assembly 210 ₁ Second distance h ₁ Greater than or equal to zero, and h is greater than h ₁ 。

It should be noted that, by providing the first distance h between the bottom end 2211a of the second inclined surface 2211 and the top end 21211a of the first inclined surface 21211, the driving assembly 210 has a certain movement space in the x direction, so as to ensure that the transmission part 221 can move in the z direction toward the switch 230 when the driving part 2121 moves in the x direction away from the first end 210a of the driving assembly 210.

In fig. 16, c is a distance that the first driver 211 moves toward the second end 210b of the driving unit 210 when the first driver 211 is pressed, where c may be controlled by the length of the abutment portion 2112 or by a plane between the two abutment portions 2112 and a plane between the two through holes 1333, and of course, in other embodiments, other components may be provided to control the distance that the first driver 211 moves toward the second end 210b of the driving unit 210, and a specific defined structure may be set according to a specific situation, and in this embodiment, the control condition for c is not specifically defined.

L ₁ To switch 230 in the off state, a gap is formed between the first ramp 21211 at a point in the z-direction where the distance from the switch 230 is greatest (i.e., the bottom end 2121b of the drive section 2121) and the second ramp 2211 at a point in the z-direction where the distance from the switch 230 is greatest (i.e., the bottom end 221a of the drive section); l (L) ₂ To switch 230 in the on state, the first ramp 21211 is spaced from the point of greatest distance from the switch 230 in the z-direction (i.e., the bottom end 2121b of the drive 2121) and the second ramp 2211 is spaced from the point of greatest distance from the switch 230 in the z-direction (i.e., the bottom end 221a of the drive).

H in the figure is greater than h ₁ I.e., the second inclined surface 2211 and the first inclined surface 21211, it is understood that the distance of the second inclined surface 2211 moving with respect to the first inclined surface 21211 is only less than or equal to h. L (L) ₁ Less than L ₂ That is, the second inclined surface 2211 moves a distance toward the switch 230 with respect to the first inclined surface 21211, that is, the transmission member 220 moves a distance toward the switch 230 with respect to the driving unit 210, and since the transmission member 220 is connected to the elastic portion 231, the elastic portion 231 also moves a distance toward the switch 230 with respect to the driving unit 210, so that the switch 230 is turned on from the off state. Wherein L is ₂ And L ₁ The difference is the distance that the first inclined surface 21211, the driving member 220 and the elastic portion 231 move in a direction approaching the switch 230.

When the pressing is completed, the driving force F received by the first end 210a of the driving unit 210 is removed, and the driving force received by the transmission member 220 and the elastic portion 231 is removed. At this time, the elastic portion 231 and the transmission member 220 generate a restoring force under the self-elasticity, so that the elastic portion 231 and the transmission member 220 restore to the original shape, so that the second inclined surface 2211 moves in the z direction away from the switch 230, and drives the first inclined surface 21211 to move in the x direction toward the first end 210a of the driving assembly 210, and further drives the first driving member 211 to move toward the first end 210a of the driving assembly 210 to the initial position.

Note that, the switch 230 may be a tact switch 230, and the tact switch 230 may be turned on when receiving a slight press, and may be turned off automatically when the pressing force is removed.

By providing the first inclined surface 21211 on the driving portion 2121 and providing the second inclined surface 2211 on the transmission portion 221, when the driving portion 2121 moves in the direction from the first end 210a to the second end 210b of the driving assembly 210, the driving portion 221 can be driven to move along the direction perpendicular to the direction in which the driving portion 2121 moves, and the inclined surface has a simple structure and is convenient to process, so that the processing difficulty of the driving assembly 210 and the transmission member 220 can be reduced, and the cost of the key structure 200 can be further reduced.

In other embodiments, the driving portion 2121 of the driving assembly 210 and the transmitting portion 221 of the transmitting member 220 may be provided in other configurations. As shown in fig. 17, the driving portion 2121 may be a first arc-shaped protrusion 21212, wherein a first end of the first arc-shaped protrusion 21212 is connected to the driving assembly 210, and a second end of the first arc-shaped protrusion 21212 protrudes in a direction approaching the transmission member 220. The surface of the transmission part 221 contacting and connected with the driving part 2121 may be a third inclined surface 2213; the third bevel 2231 is inclined away from the switch 230 in a direction from the first end 210a to the second end 210b of the drive assembly 210.

In a direction perpendicular to the direction from the first end 210a to the second end 210b of the driving assembly 210, a point from the first curved protrusion 21212 to the switch 230 at which a distance from the first curved protrusion 21212 is smallest is an apex 21212a, and a point from the third inclined surface 2213 to the switch 230 at which a distance from the third inclined surface 2213 is largest is a bottom end 2213a of the third inclined surface 2213;

when the switch 230 is in the off state, the bottom end 2213a of the third ramp 2213 and the vertex 21212a of the first arcuate projection 21212 are present a first distance h in the direction from the first end 210a to the second end 210b of the drive assembly 210;

during the process that the driving assembly 210 drives the switch 230 to move from the off state to the on state, the driving assembly 210 slides along the direction from the first end 210a to the second end 210b of the driving assembly 210 towards the direction approaching the transmission member 220, so that the first arc-shaped protrusion 21212 applies force to the third inclined surface 2213, the third inclined surface 2213 slides along the surface of the first arc-shaped protrusion 21212 towards the direction approaching the vertex 21212a of the first arc-shaped protrusion 21212, and the transmission member 220 moves towards the direction approaching the switch 230, so that the first distance h gradually decreases;

when the switch 230 is in the on state, the vertex 21212a of the first arcuate projection 21212 and the bottom end 2213a of the third inclined surface 2213 are separated by a second distance in a direction from the first end 210a to the second end 210b of the driving assembly 210, the second distance is greater than or equal to zero, and the first distance is greater than the second distance.

By providing the driving portion 2121 as the first arc-shaped protrusion 21212, the structure of the driving portion 2121 can be simplified, the processing difficulty of the driving portion 2121 can be reduced, and further the cost can be reduced. In addition, the surface of the arc-shaped protrusion is smooth, so that the contact area between the driving part 2121 and the transmission part 221 can be reduced, the friction force between the driving part 2121 and the transmission part 221 can be reduced, the key structure 200 can be pressed more labor-saving, and the sensitivity of the key structure 200 can be improved. By providing the transmission portion 221 as the third inclined surface 2213, so that the first arc-shaped protrusion 21212 of the driving portion 2121 and the third inclined surface 2213 are in contact connection, the third inclined surface 2213 can be tangent to the first arc-shaped protrusion 21212 relative to a right angle, so that relative movement between the driving portion 2121 and the transmission portion 221 is smoother, abrasion of the driving portion 2121 and the transmission portion 221 can be reduced, and service life of the key structure 200 is prolonged.

Of course, in other embodiments, the transmission portion 221 may have other shapes, as shown in fig. 18, where the transmission portion 221 may be a second arc-shaped protrusion 2212, a first end of the second arc-shaped protrusion 2212 is connected to the transmission member 220, and a second end of the second arc-shaped protrusion 2212 protrudes toward the direction approaching the driving assembly 210.

In a direction perpendicular to the direction from the first end 210a to the second end 210b of the driving assembly 210, the point at which the distance from the first arcuate projection 21212 to the switch 230 is the peak 21212a of the first arcuate projection 21212 and the point at which the distance from the second arcuate projection 2212 to the switch 230 is the peak 2212a of the second arcuate projection 2212.

When the switch 230 is in the off state, the vertex 21212a of the first arcuate projection 21212 and the vertex 2212a of the second arcuate projection 2212 are separated by a first distance h in the direction from the first end 210a to the second end 210b of the drive assembly 210;

during the process that the driving assembly 210 drives the switch 230 to move from the off state to the on state, the driving assembly 210 slides along the direction from the first end 210a to the second end 210b of the driving assembly 210 towards the direction approaching the transmission member 220, so that the first arc-shaped protrusion 21212 applies force to the second arc-shaped protrusion 2212, the second arc-shaped protrusion 2212 slides along the surface of the first arc-shaped protrusion 21212 towards the vertex 21212a of the first arc-shaped protrusion 21212, so that the transmission member 220 moves towards the direction approaching the switch 230, and the first distance h gradually decreases.

When the switch 230 is in the on state, the vertex 21212a of the first arcuate projection 21212 and the vertex 2212a of the second arcuate projection 2212 are separated by a second distance in the direction from the first end 210a to the second end 210b of the driving assembly 210, the second distance being greater than or equal to zero, and the first distance being greater than the second distance.

In some embodiments, those skilled in the art, based on the teachings of the present embodiments, may design, without the need for creative effort, as desired: the driving part is an inclined plane, and the transmission part is an arc-shaped convex structure.

By arranging the transmission part 221 as the second arc-shaped protrusion 2212, the surface of the transmission part 221 can be smooth, the contact area between the driving part 2121 and the transmission part 221 can be reduced, and further the friction force between the driving part 2121 and the transmission part 221 can be reduced, so that the abrasion of the driving part 2121 and the transmission part 221 can be reduced, and further the service life of the key structure 200 can be prolonged; in addition, the key structure 200 can be pressed more effort-saving, and the sensitivity of the key structure 200 can be improved.

It will be appreciated that the shapes of the transmission portion 221 and the driving portion 2121 include, but are not limited to, the shapes given in the above embodiments, and in other embodiments, the transmission portion 221 and the driving portion 2121 may be configured in other shapes, provided that the transmission portion 221 is located on a side of the driving portion 2121 near the second end 210b of the driving assembly 210, and that the orthographic projections of the driving portion 2121 and the driving portion 221 in the direction from the first end 210a to the second end 210b of the driving assembly 210 at least partially overlap, and that the orthographic projections of the driving portion 2121 and the driving portion 221 in the direction perpendicular to the first end 210a to the second end 210b of the driving assembly 210 at least partially overlap.

And in the direction perpendicular to the direction from the first end 210a to the second end 210b of the driving assembly 210, the point from the driving part 2121 to the switch 230 where the distance is smallest is the top end 2121a of the driving part 2121, and the point from the driving part 221 to the switch 230 where the distance is largest is the bottom end 221a of the driving part 221. When the switch 230 is in the off state, the distance between the top end 2121a of the driving portion 2121 and the bottom end 221a of the transmission portion 221 in the direction from the first end 210a to the second end 210b of the driving assembly 210 is a first distance; during the process that the driving assembly 210 drives the switch 230 to move from the off state to the on state, the driving assembly 210 slides along the direction from the first end 210a to the second end 210b of the driving assembly 210 towards the direction approaching the transmission member 220, so that the driving portion 2121 applies force to the driving portion 221, the driving portion 221 slides along the surface of the driving portion 2121 towards the direction approaching the top end 2121a of the driving portion 2121, and the first distance gradually decreases; when the switch 230 is in the on state, the distance between the top end 2121a of the driving portion 2121 and the bottom end 221a of the transmission portion 221 in the direction from the first end 210a to the second end 210b of the driving assembly 210 is a second distance, and the second distance is greater than or equal to zero. This translates movement of the drive assembly 210 in the x-direction toward the second end 210b of the drive assembly 210 into movement of the transmission 230 in the z-direction toward the switch 230.

The bottom end 2121b of the driving portion is a point where the driving portion 2121 is at the greatest distance from the switch 230, and the bottom end 221a of the transmission portion is a point where the transmission portion 221 is at the greatest distance from the switch 230.

By disposing the transmission portion 221 on a side of the driving portion 2121 adjacent to the second end 210b of the driving assembly 210 such that the driving assembly 210 is moved in the x-direction toward the second end 210b of the driving assembly 210 when the first end 210a of the driving assembly 210 is pressed, the driving member 220 is driven to move in the z-direction toward the switch 230.

The thickness of the surface of the driving part 2121 contacting and connecting with the transmission part 221 in the direction from the first end 210a to the second end 210b of the driving assembly 210 is gradually reduced, and the thickness of the surface of the driving part 221 contacting and connecting with the driving part 2121 in the direction from the first end 210a to the second end 210b of the driving assembly 210 is gradually increased, so that the relative movement between the driving part 2121 and the transmission part 221 is ensured to be smoother, and the stability of the key structure 200 is improved.

According to the key structure 200 provided by the embodiment of the application, the driving assembly 210 is slidably arranged along the x direction, the conducting direction of the switch 230 and the thickness direction of the transmission member 220 are also arranged along the x direction, and the motion of the driving assembly 210 along the x direction is converted into the motion of the transmission member 220 along the z direction through the matching relationship between the driving portion 2121 and the transmission portion 221, so that the switch 230 can be switched between the off and on states.

In addition, since the on direction of the switch 230 and the thickness direction of the transmission member 220 are both set along the x direction, the thickness of the transmission member 220 and the switch 230 in the z direction can be reduced, and the thickness of the key structure 200 in the z direction can be further reduced, so that the space occupied by the key structure 200 in the z direction can be reduced when the key structure 200 is set on the electronic device 100, that is, the key structure 200 can be mounted on the electronic device 100 with a smaller thickness, so that the key structure 200 is beneficial to the development of the light and thin electronic device 100.

The key structure 200 provided in the embodiment of the present application may be used for side keys of the electronic device 100 such as a mobile phone, a tablet computer, a notebook computer, a wearable device, a charger, and the like.

In the description of the embodiments of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, indirectly connected through an intermediary, or may be in communication with each other between two elements or in an interaction relationship between two elements. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art according to the specific circumstances.

The terms first, second, third, fourth and the like in the description and in the claims of embodiments of the application and in the above-described figures, if any, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order.

Claims

1. The key structure is characterized by comprising a driving assembly (210), a transmission piece (220) and a switch (230); wherein,

the driving component (210) and the transmission piece (220) are movably arranged;

the switch (230) is arranged close to the second end (210 b) of the driving assembly (210), the transmission piece (220) is positioned between the switch (230) and the second end (210 b) of the driving assembly (210), and an included angle between the conducting direction of the switch (230) and the direction from the first end (210 a) to the second end (210 b) of the driving assembly (210) is larger than zero;

the second end (210 b) of the driving assembly (210) is provided with a driving part (2121), one surface of the transmission piece (220) far away from the switch (230) is provided with a transmission part (221), and the driving part (2121) is in sliding connection with the transmission part (221);

when the driving part (2121) and the transmission part (221) are in contact, the front projection of the driving part (2121) in the direction from the first end (210 a) to the second end (210 b) of the driving assembly (210) and the front projection of the transmission part (221) in the direction from the first end (210 a) to the second end (210 b) of the driving assembly (210) are at least partially overlapped; an orthographic projection of the driving part (2121) in the conducting direction of the switch (230) and an orthographic projection of the transmission part (221) in the conducting direction of the switch (230) are at least partially overlapped.

2. The key structure according to claim 1, wherein a distance from a top end (2121 a) of the driving part (2121) to the switch (230) is smallest and a distance from a bottom end (221 a) of the transmission part (221) to the switch (230) is largest in a perpendicular direction to a direction from a first end (210 a) to a second end (210 b) of the driving assembly (210);

when the switch (230) is in an off state, a distance between a top end (2121 a) of the driving part (2121) and a bottom end (221 a) of the transmission part (221) in a direction from a first end (210 a) to a second end (210 b) of the driving assembly (210) is a first distance;

during the process that the driving assembly (210) drives the switch (230) to move from the off state to the on state, the transmission part (221) slides along the surface of the driving part (2121) towards the direction approaching the top end (2121 a) of the driving part (2121), and the first distance gradually becomes smaller.

3. The key structure according to claim 1 or 2, wherein the transmission part (221) is located at a side of the driving part (2121) away from the first end (210 a) of the driving assembly (210); wherein,

the thickness of the driving part (2121) in the direction perpendicular to the direction from the first end (210 a) to the second end (210 b) of the driving assembly (210) is gradually reduced along the direction from the first end (210 a) to the second end (210 b) of the driving assembly (210);

The thickness of the transmission part (221) in the direction perpendicular to the direction from the first end (210 a) to the second end (210 b) of the driving assembly (210) gradually increases along the direction from the first end (210 a) to the second end (210 b) of the driving assembly (210).

4. A key structure according to any one of claims 1-3, wherein a face of the driving part (2121) slidingly connected to the transmission part (221) is a first inclined face (21211);

a second inclined surface (2211) matched with the first inclined surface (21211) is arranged on the transmission piece (220);

the first ramp (21211) slopes away from the switch (230) in a direction from the first end (210 a) to the second end (210 b) of the drive assembly (210);

the second ramp (2211) is inclined away from the switch (230) in a direction from the first end (210 a) to the second end (210 b) of the drive assembly (210);

in a direction perpendicular to the direction from the first end (210 a) to the second end (210 b) of the driving assembly (210), a distance from a top end (21211 a) of the first inclined surface (21211) to the switch (230) is smallest, and a distance from a bottom end (2211 a) of the second inclined surface (2211) to the switch (230) is largest, wherein:

when the switch (230) is in an off state, a bottom end (2211 a) of the second inclined surface (2211) and a top end (21211 a) of the first inclined surface (21211) are separated from each other by a first distance in a direction from a first end (210 a) to a second end (210 b) of the driving assembly (210);

During the process that the driving assembly (210) drives the switch (230) to move from the off state to the on state, the second inclined surface (2211) slides along the first inclined surface (21211) towards the direction approaching the top end (21211 a) of the first inclined surface (21211), and the first distance is gradually reduced.

5. A key structure according to any of claims 1-3, wherein the driving portion (2121) is a first arc-shaped protrusion (21212); wherein,

a first end of the first arc-shaped protrusion (21212) is connected with the driving assembly (210), and a second end of the first arc-shaped protrusion (21212) protrudes towards a direction close to the transmission piece (220);

in the direction perpendicular to the direction from the first end (210 a) to the second end (210 b) of the driving assembly (210), the distance from the vertex (21212 a) of the first arc-shaped protrusion (21212) to the switch (230) is the smallest, and the point from the transmission part (221) to the switch (230) where the distance is the largest is the bottom end (221 a) of the transmission part (221);

when the switch (230) is in an off state, the bottom end (221 a) of the transmission part (221) and the vertex (21212 a) of the first arc-shaped protrusion (21212) are at a first distance in the direction from the first end (210 a) to the second end (210 b) of the driving assembly (210);

During the process that the driving assembly (210) drives the switch (230) to move from the off state to the on state, the transmission part (221) slides along the surface of the first arc-shaped protrusion (21212) towards the direction approaching to the vertex (21212 a) of the first arc-shaped protrusion (21212), and the first distance gradually becomes smaller.

6. The key structure according to claim 5, wherein the transmission part (221) is a second arc-shaped protrusion (2212); wherein,

a first end of the second arc-shaped protrusion (2212) is connected with the transmission piece (220), and a second end of the second arc-shaped protrusion (2212) protrudes towards a direction approaching to the driving assembly (210);

-the maximum distance of the vertex (2212 a) of the second arcuate projection (2212) from the switch (230) in a direction perpendicular to the direction of the first end (210 a) to the second end (210 b) of the drive assembly (210);

-when the switch (230) is in the off state, the apex (21212 a) of the first arcuate projection (21212) and the apex (2212 a) of the second arcuate projection (2212) are at the first distance in the direction of the first end (210 a) to the second end (210 b) of the drive assembly (210);

during the process that the driving assembly (210) drives the switch (230) to move from the off state to the on state, the second arc-shaped protrusion (2212) slides along the surface of the first arc-shaped protrusion (21212) towards the direction approaching the vertex (21212 a) of the first arc-shaped protrusion (21212), and the first distance is gradually reduced.

7. The key structure according to claim 5, wherein a face of the transmission part (221) slidingly connected with the driving part (2121) is a third inclined face (2213); wherein,

the third ramp (2231) slopes in a direction away from the switch (230) in a direction from the first end (210 a) to the second end (210 b) of the drive assembly (210);

-the bottom end (2213 a) of the third ramp (2213) is at a maximum distance from the switch (230) in a direction perpendicular to the direction of the first end (210 a) to the second end (210 b) of the drive assembly (210);

-when the switch (230) is in the off state, the bottom end (2213 a) of the third ramp (2213) and the apex (21212 a) of the first arcuate projection (21212) are present at the first distance in the direction from the first end (210 a) to the second end (210 b) of the drive assembly (210);

during the process that the driving assembly (210) drives the switch (230) to move from the off state to the on state, the third inclined surface (2213) slides along the surface of the first arc-shaped protrusion (21212) towards the direction approaching the vertex (21212 a) of the first arc-shaped protrusion (21212), and the first distance gradually becomes smaller.

8. The key structure according to any of the claims 1-7, wherein the driving assembly (210) comprises a first driving member (211) and a second driving member (212); wherein,

The first driving piece (211) is abutted with the second driving piece (212);

the driving assembly (210) and the transmission piece (220) are movably arranged, and the driving assembly comprises: the second driving part (212) and the transmission part (220) are movably arranged.

9. The key structure according to claim 8, wherein at least one abutment (2112) is provided at an end of the first driving member (211) adjacent to the second driving member (212); wherein,

at least one abutting portion (2112) is arranged at intervals along the direction from the third end (210 c) to the fourth end (210 d) of the driving assembly (210);

each of the abutment portions (2112) corresponds to one of the second drivers (212).

10. The key structure according to claim 8 or 9, wherein the first driving member (211) is provided with an engaging portion (2111); wherein,

the first end of the clamping part (2111) is positioned on one surface of the first driving piece (211) close to the second driving piece (212);

the second end of the clamping part (2111) extends along the direction from the third end (210 c) to the fourth end (210 d) of the driving assembly (210) to the direction away from the first driving piece (211); alternatively, the second end of the engagement portion (2111) extends away from the first driver (211) in a direction along the fourth end (210 d) to the third end (210 c) of the driver assembly (210).

11. The key structure according to claim 10, wherein the number of the engaging portions (2111) is two; wherein,

one of the two engaging portions (2111) is located at a fourth end (210 d) of the driving assembly (210), a first end of the engaging portion (2111 a) is located at a surface of the first driving member (211) close to the second driving member (212), and a second end of the engaging portion (2111 a) extends in a direction from a third end (210 c) to the fourth end (210 d) of the driving assembly (210) and away from the first driving member (211);

the other clamping part (2111 b) of the two clamping parts (2111) is located at a third end (210 c) of the driving assembly (210), a first end of the clamping part (2111 b) is located at one surface of the first driving piece (211) close to the second driving piece (212), and a second end of the clamping part (2111 b) extends in a direction from a fourth end (210 d) to the third end (210 c) of the driving assembly (210) to a direction away from the first driving piece (211).

12. The key structure according to any one of claims 1-11, wherein said switch (230) comprises an elastic portion (231); wherein,

the elastic part (231) is arranged at one end of the switch (230) close to the transmission piece (220), the first end of the elastic part (231) is connected to the switch (230), and the second end of the elastic part (231) protrudes towards the direction close to the transmission piece (220).

13. The key structure according to any of the claims 1-12, wherein the angle between the conducting direction of the switch (230) and the direction of the first end (210 a) to the second end (210 b) of the driving assembly (210) is 90 °.

14. The key structure according to claim 13, wherein the thickness of the switch (230) in the switch-on direction is smaller than the length of the switch (230) in the direction from the first end (210 a) to the second end (210 b) of the driving assembly (210) and smaller than the length of the switch (230) in the direction from the third end (210 c) to the fourth end (210 d) of the driving assembly (210).

15. An electronic device, characterized in that it comprises at least a central frame (130) and a key structure (200) according to any one of claims 1-14; wherein,

the key structure (200) is mounted on the middle frame (130), a part of the structure of the first end (210 a) of the driving assembly (210) is exposed out of the middle frame (130), and the second end (210 b) of the driving assembly (210) is located in the electronic device.

16. The electronic device of claim 15, wherein a maximum thickness of the key structure (200) in a thickness direction of the electronic device from the first end (210 a) to the second end (210 b) of the driving assembly (210) is smaller than a length of the switch (230) in a direction from the first end (210 a) to the second end (210 b) of the driving assembly (210) and smaller than a length of the switch (230) in a direction from the third end (210 c) to the fourth end (210 d) of the driving assembly (210).