CN217847768U

CN217847768U - Push-button switch

Info

Publication number: CN217847768U
Application number: CN202222010295.3U
Authority: CN
Inventors: 郭德斌; 王莎; 宛俊杰; 詹锋
Original assignee: Ningbo Gongniu Electric Appliances Co Ltd
Current assignee: Ningbo Gongniu Electric Appliances Co Ltd
Priority date: 2022-07-25
Filing date: 2022-07-25
Publication date: 2022-11-18
Anticipated expiration: 2032-07-25

Abstract

The application discloses a button switch, which comprises a button assembly, a transition piece assembly and a pressure plate; the transition piece assembly is positioned on the inner side of the button assembly and comprises a transition piece body and a limiting part which are connected or butted with each other; the transition piece body is provided with a trunnion which is rotatably positioned in a corresponding shaft hole on the pressure plate, so that the transition piece body can swing relative to the pressure plate under the actuation of the button assembly; the restricting portion abuts a button assembly or a pressure plate such that the trunnion is biased within the axial bore. The utility model discloses a button switch can solve the trunnion of transition piece subassembly and the easy crooked problem of wane that leads to of shaft hole clearance fit of clamp plate, has improved button switch's performance and life.

Description

Push-button switch

Technical Field

The application relates to the technical field of electrical equipment, in particular to a button switch.

Background

The wall switch generally refers to an electrical appliance switch installed on a wall for switching on and off current transmission between a power supply line and a home electrical appliance. One common type of wall switch is a push-button switch, i.e. a button is provided on the switch panel, which is connected to a functional component of the switch, and the switch can be switched on and off by actuating the button to swing up and down.

In the related art, a button of the button switch is mounted on a transition piece, the transition piece is mounted on a pressure plate, and a distal end of the transition piece abuts against a rocker. When the button is actuated, the button drives the transition piece to synchronously swing relative to the pressure plate, and the tail end of the transition piece further drives the warping plate to reciprocate, so that a circuit is switched on or switched off. A clearance fit is typically employed between the transition piece and the pressure plate for ease of assembly and oscillation relative to the pressure plate.

The swing direction of button is the upper and lower direction only under the ideal state, but because the button, spare parts such as clamp plate exist warp the warpage, make uncontrollable factors such as button edge atress when dialling the switch, the button is driving the in-process of transition piece reciprocal swing, the ascending slope of left right direction takes place very easily for the transition piece, the slip track that leads to the end of transition piece on the wane can deviate the wane center, cause wane unilateral wearing and tearing seriously and take place crooked easily, and then cause the silver point on the wane to be misaligned with the silver point on the terminal that is qualified for the next round of competitions, the atress is uneven, cause the unilateral ablation of silver point, bring harmful effects for button switch's performance and life.

SUMMERY OF THE UTILITY MODEL

In view of this, the application provides a button switch, can solve the easy crooked problem of wane that transition piece and clamp plate clearance fit lead to, has improved button switch's performance and life.

The following technical scheme is specifically adopted in the application:

the application provides a button switch, which comprises a button assembly, a transition piece assembly and a pressure plate;

the transition piece assembly is positioned on the inner side of the button assembly and comprises a transition piece body and a limiting part which are connected or butted against each other;

the transition piece body is provided with a trunnion which is rotatably positioned in a corresponding shaft hole on the pressure plate, so that the transition piece body can swing relative to the pressure plate under the actuation of the button assembly;

the restricting portion abuts against the button assembly or the pressure plate so that the trunnion is biased in the axial hole.

Optionally, a through opening is formed in the pressure plate, and the transition piece body penetrates through the through opening;

a pair of shaft hole seats and a first abutting piece are arranged on one side, close to the button assembly, of the pressing plate, the pair of shaft hole seats are located on two opposite sides of the through opening, and the shaft holes are located on the shaft hole seats;

the restricting portion includes a second abutting piece that abuts against the first abutting piece.

Optionally, at least one of the first abutment and the second abutment is in a resiliently compressed state.

Optionally, the first abutment member is a rib provided on the pressure plate and protruding toward the limiting portion, and/or the second abutment member is a protrusion on the limiting portion and protruding toward the pressure plate.

Optionally, the first abutment has a concave arc;

when the transition piece body swings relative to the pressure plate, the second abutting piece slides on the concave arc surface.

Optionally, an end surface of one end of the second abutting part abutting against the first abutting part is in a convex arc surface shape.

Optionally, the spherical center of the sphere where the convex arc surface is located on the rotation axis of the transition piece body.

Optionally, a contact point of the restricting portion with the button assembly or the pressure plate is located on an axis of rotation of the transition piece body.

Optionally, the second abutment is located between the through opening and the shaft bore seat.

Optionally, the second abutment is a spring;

the limiting part further comprises a guide piece, the spring is sleeved on the guide piece, and two ends of the spring are respectively abutted to the transition piece body and the pressing plate.

Optionally, the restricting portion includes a connecting member connected to the transition piece body and surrounding the trunnion on a side of the trunnion remote from the through opening,

the second abutment is connected to the connection and is further from the through opening than the trunnion.

Optionally, the button switch further comprises a face cover and a base;

the button assembly is arranged on the face cover, and the face cover is connected with the pressing plate or the base;

the transition piece assembly and the pressure plate are both received in the base;

the inner side of the button assembly is provided with a third abutting piece, the limiting part comprises a fourth abutting piece, and the fourth abutting piece abuts against the third abutting piece.

The embodiment of the application provides a button switch, a restriction portion has been add for the transition piece body, restriction portion and button assembly or clamp plate counterbalance brought effort can make the gudgeon of transition piece body at the downthehole biasing of clamp plate shaft, be about to the gudgeon to support on the axle pore wall, thereby the portable space of gudgeon in the axle pore has been restricted, can avoid the gudgeon to take place to rock in the axle pore, but do not influence the swing of transition piece body on the swing plane that corresponds with the axis of rotation of gudgeon again, thereby the button switch's that the clearance between the gudgeon of transition piece body and the axle pore of clamp plate caused wane problem that easily skews has been solved to a certain extent, button switch's performance and life have been improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is an exploded view of a push button switch provided in an embodiment of the present application;

FIG. 2 is a first schematic assembly view of a transition piece assembly and a pressure plate provided by an embodiment of the present application;

FIG. 3 is a cross-sectional view of an assembled transition piece assembly and pressure plate provided by an embodiment of the present application;

FIG. 4 is a second schematic assembly view of a transition piece assembly and a pressure plate provided by an embodiment of the present application;

FIG. 5 is a third schematic assembly view of a transition piece assembly and a pressure plate provided in accordance with an embodiment of the present application.

Reference numerals are as follows:

1. a button assembly;

2. a transition piece assembly; 21. a transition piece body; 211. a trunnion; 22. a restricting section; 221. a second abutting member; 2211. a spring; 222. a connecting member; 223. a guide member;

3. pressing a plate; 31. a shaft hole seat; 311. a shaft hole; 32. a through opening; 33. a first abutting member;

4. a terminal assembly;

5. a housing; 51. a face cover; 52. a base.

Detailed Description

In order to make the technical solutions and advantages of the present application clearer, the following will describe embodiments of the present application in further detail with reference to the accompanying drawings.

In the related art, the button of the button switch is mounted on the transition piece, the transition piece is mounted on the pressure plate, and the end of the transition piece abuts against the rocker. When the button is actuated, the button drives the transition piece to synchronously swing relative to the pressure plate, and the tail end of the transition piece further drives the warping plate to reciprocate, so that a circuit is switched on or switched off. Thus, to facilitate assembly and oscillation relative to the pressure plate, a clearance fit is typically employed between the transition piece and the pressure plate.

To solve the above problems, embodiments of the present application provide a button switch, which may include a button assembly 1, a transition piece assembly 2, a pressure plate 3, a terminal assembly 4, and a housing 5, as shown in fig. 1. Wherein the housing 5 may include a face cover 51 and a base 52, the button assembly 1 being mounted on the face cover 51 for receiving actuation; the transition piece assembly 2, the pressure plate 3, and the terminal assembly 4 are all housed inside the base 52, the terminal assembly 4 comprising a rocker.

It should be noted that, in the embodiments of the present application, some orientation terms, such as "upper", "lower", "side", "inner", "outer", etc., are referred to, and these reference orientation terms are generally used as references to relative relationships of the orientations shown in fig. 1, and these orientation terms are used only for describing the relationships between the structures more clearly, and are not used for describing absolute orientations. When the products are placed in different postures, the orientations may be changed, for example, "up" and "down" may be interchanged, or "up" and "side" may be interchanged, and the like. As shown in fig. 1, the direction of the face cover 51 relative to the base 52 in the housing 5 may be defined as "up", and the direction of the base 52 relative to the face cover 51 may be defined as "down"; a direction toward the inside of the housing 5 may be defined as "inside", and a direction toward the outside of the housing 5 may be defined as "outside".

The transition piece assembly 2 is positioned at the inner side of the button assembly 1; the transition piece assembly 2 includes a transition piece body 21 and a limiting portion 22 connected or abutted to each other; the transition piece body 21 is provided with a trunnion 211, and the trunnion 211 is rotatably positioned in a corresponding shaft hole 311 on the pressure plate 3, so that the transition piece body 21 can rotate relative to the pressure plate 3 under the actuation of the button assembly 1; the restricting portion 22 abuts the button assembly 1 or the pressure plate 3, so that the trunnion 211 is biased in the shaft hole 311.

The transition piece assembly 2 can be connected with or against one side of the button assembly 1 facing the inside of the base 52, so that when the button assembly 1 is actuated, the transition piece assembly 2 can move synchronously under the driving of the button assembly 1.

The pressing plate 3 is connected to the base 52 so as to divide the inner space of the base 52 into two subspaces, wherein a first subspace is formed between the pressing plate 3 and the bottom of the base 52, and a second subspace is formed between the pressing plate 3 and the face cover 51. The terminal assembly 4 is located in the first subspace and the button assembly 1 is located in the second subspace.

The transition piece assembly 2 is installed on the pressure plate 3, and the trunnion 211 of the transition piece body 21 is clamped in the shaft hole 311 of the pressure plate 3 and can freely rotate in the shaft hole 311. It should be noted that, for ease of installation, the size of axial bore 311 in the related art is generally slightly larger than the size of trunnion 211, and therefore, there is a clearance fit therebetween. Trunnion 211 therefore has other forms of movement within shaft bore 311 in addition to rotational movement, such as wobble within shaft bore 311.

Limiting portion 22 is coupled to transition piece body 21 for providing a force to transition piece body 21 such that trunnion 211 of transition piece body 21 is biased within shaft bore 311, wherein biased means that trunnion 211 is urged against an inner wall of shaft bore 311. After the trunnion 211 abuts against the inner wall of the shaft hole 311 through the limiting part 22, at least in the acting force direction, the trunnion 211 can no longer move relative to the shaft hole 311, but the swing of the transition piece body 21 on the swing plane corresponding to the rotation axis of the trunnion 211 is not influenced, so that the problem that the wane is prone to being skewed due to the clearance fit between the trunnion 211 of the transition piece body 21 and the shaft hole 311 of the pressing plate 3 is solved, and the performance and the service life of the button switch are improved.

In some implementations of the present application, the face cover 51 is coupled to the platen 3 or the base 52; the inner side of the button assembly 1 is provided with a third abutting member, and the restricting portion 22 includes a fourth abutting member abutting against the third abutting member. For example, when assembling the push button switch, the transition piece assembly 2 may be installed in the pressing plate 3, and then the face cover 51 with the push button assembly 1 is installed, at this time, the limiting portion 22 abuts against the inner side wall of the push button assembly 1, so that the limiting portion 22 can provide acting force for the transition piece body 21, and the trunnion 211 abuts against the shaft hole 311, that is, the effect that the trunnion 211 is biased in the shaft hole 311 is achieved.

In other implementations of the present application, as shown in fig. 2, the pressure plate 3 is provided with a through opening 32, and the transition piece body 21 passes through the through opening 32; a pair of shaft hole seats 31 and a first abutting piece 33 are arranged on one side, close to the button assembly, of the pressing plate 3, the pair of shaft hole seats 31 are located on two opposite sides of the through opening, and the shaft hole 311 is located on the shaft hole seats 31; the restricting portion 22 includes a second abutment 221, and the second abutment 221 abuts against the first abutment 33.

The through opening 32 opened in the pressure plate 3 can communicate with the first subspace and the second subspace inside the base 52, and the transition piece body 21 passes through the through opening 32, thereby connecting the button assembly 1 and the terminal assembly 4 together. Wherein, the terminal assembly 4 includes a rocker, the portion of the transition piece body 21 located in the first subspace is in contact with the rocker, and when the transition piece body 21 swings under the actuation of the button assembly 1, the contact position of the transition piece body 21 and the rocker changes, so that the actuation rocker tilts. And as the rocker tilts, the moving and stationary contacts in the terminal assembly 4 contact or separate, thereby turning on or off the circuit.

In the present embodiment, a pair of axle hole seats 31 are two axle hole seats 31, and the transition piece body 21 is assembled on the two corresponding axle hole seats 31, and the two axle hole seats 31 are generally located on one side of the pressure plate 3 close to the button assembly 1 (i.e. the upper side of the pressure plate) and are symmetrically arranged on two opposite sides of the through opening 32, so that the assembled transition piece body 21 can pass through the through opening 32 and swing in the through opening 32.

The pressing plate 3 is further provided with a first abutting member 33, the first abutting member 33 and the shaft hole seat 31 are located on the same side of the pressing plate 3 relative to the button assembly 1, for example, when the shaft hole seat 31 is located on the side of the pressing plate 3 close to the button assembly 1, the first abutting member 33 is also located on the side of the pressing plate 3 close to the button assembly 1. The number of the first abutment 33 is at least one. In some embodiments, when the number of the first abutment members 33 is two, two first abutment members 33 may be symmetrically arranged on two opposite sides of the through opening 32, where the "two opposite sides" are the same as the "two opposite sides" of the through opening 32 where the central bore seat 31 is located, that is, one bore seat 31 and one first abutment member 33 are provided on each of the two opposite sides of the through opening 32.

The limiting portion 22 comprises two second abutments 221, the two second abutments 221 abutting against the pressure plate 3, and at least one second abutment 221 abutting against the first abutment 33. In some embodiments, when the number of the first abutments 33 is two, the two second abutments 221 can respectively correspond to the two first abutments 33 and respectively abut against the two first abutments 33, thereby providing a force for biasing the trunnion 211 of the transition piece body 21 in the shaft hole 311.

Wherein at least one of the first abutment 33 and the second abutment 221 is in an elastically compressed state. Alternatively, at least one of the first abutment 33 and the second abutment 221 may be made of a material having elasticity, for example, may be a plastic product, a rubber product, or the like. When the transition piece assembly 2 is assembled to the pressure plate 3, the first abutment 33 and/or the second abutment 221 may be deformed to some extent so as to tightly abut the trunnion 211 of the transition piece body 21 on the shaft hole 311.

As shown in fig. 3, the first abutment 33 may be a rib provided on the pressure plate 3 projecting toward the restriction portion 22, and/or the second abutment 221 may be a projection on the restriction portion 22 projecting toward the pressure plate 3. The convex rib can be used for abutting against the bulge, and the strength of the pressing plate 3 can be increased, so that the use performance of the pressing plate 3 is improved, and meanwhile, the bulge is abutted against the convex rib to facilitate positioning during assembly.

In some embodiments, the first abutment 33 may have a concave arc surface on which the second abutment 221 slides when the transition piece body 21 swings relative to the platen 3.

When the restricting portion 22 is connected to the transition piece body 21, the restricting portion 22 swings synchronously with the transition piece body 21, and during the swing, the second abutting piece 221 of the restricting portion 22 has an arc-shaped sliding track. Therefore, the corresponding surface of the first abutting part 33 is configured to be a concave arc surface matched with the sliding track of the second abutting part 221, so that the second abutting part 221 can always provide acting force for the transition piece body 21 during the sliding process, and the trunnion 211 is biased in the shaft hole 311.

In the embodiment of the present application, the end surface of the end of the second abutting part 221 abutting against the first abutting part 33 is a convex arc surface. The convex arc surface can abut against the concave arc surface and slide on the concave arc surface, wherein the convex arc surface ensures good adaptation of the second abutting part 221 to the first abutting part 33 under various rotation angles, the first abutting part 33 can be prevented from being scratched, and the friction damage of the second abutting part 221 can also be prevented.

In some embodiments, the axis of the sphere or cylinder in which the convexly curved surface is located is on the rotational axis of the transition piece body 21. That is, the convex arc surface may be a spherical surface or a cylindrical surface. In this case, as the transition piece assembly 2 is rotated relative to the platen 3, the contact point on the second abutment 221 with the first abutment 33 is a point at a different location on the convex arc.

In other embodiments, the point of contact of the restriction 22 with the button assembly 1 or the platen 3 is located on the rotational axis of the transition piece body 21. For example, the contact point of the first abutment 33 and the second abutment 221 is located on the rotation axis of the transition piece body 21, in which case the contact point on the second abutment 221 with the first abutment 33 remains constant at all times as the transition piece assembly 2 rotates relative to the platen 3. As another example, the contact point of the third abutment and the fourth abutment is located on the rotational axis of the transition piece body 21, in which case the contact point on the third abutment with the fourth abutment remains constant as the transition piece assembly 2 rotates relative to the platen 3.

In some embodiments of the present application, referring to fig. 4, the second abutment 221 is located between the through opening 32 and the shaft bore seat 31.

The second abutment 221 may be located inside the trunnion and directly connected to or against the transition piece body 21. Here, the second abutting part 221 may be an elastic structure itself, and/or a portion of the pressing plate (e.g., the first abutting part) abutting against the second abutting part may be an elastic structure, which is compressed and deformed after assembly, so as to provide a force for biasing the trunnion 211 and abutting against the shaft hole 311.

Alternatively, the second abutment 221 may be a spring 2211; the limiting portion 22 further includes a guide 223, the spring 2211 is sleeved on the guide 223, and two ends of the spring 2211 respectively abut against the transition piece body 21 and the pressing plate 3.

Illustratively, the second abutment 221 may be a spring 2211 having a relatively large stiffness (e.g., greater than a predetermined stiffness threshold), and the guide 223 may be a strut coupled to the transition piece body 21. The spring 2211 may be sleeved outside the guide 223, and one end of the spring 2211 abuts against the transition piece body 21 and the other end abuts against the pressing plate 3, for example, against the first abutting piece 33 of the pressing plate 3, so as to provide an acting force, at which the guide 223 may not directly contact the pressing plate 3, but indirectly contact through the spring 2211 in a compressed state. When the transition piece body 21 swings, the spring 2211 is subjected to bending deformation.

In some embodiments, referring to fig. 5, restraint 22 further includes a connector 222, connector 222 being connected to transition piece body 21 and surrounding trunnion 211 on a side of trunnion 211 distal from through opening 32; the second abutment 221 is connected to the connecting piece 222, and the second abutment 221 is further away from the through opening 32 than the trunnion 211.

Link 222 is attached to transition piece body 21 on the side where trunnion 211 is located, and link 222 surrounds trunnion 211 from the side of trunnion 211 remote from the through opening. Trunnions 211 project outwardly on a side wall of transition piece body 21, and correspondingly, link 222 is also attached to the side wall and surrounds trunnions 211 such that trunnions 211 are located between link 222 and the side wall of transition piece body 21, as shown, for example, in FIG. 5. Wherein, trunnion 211 and connecting member 222 have a gap therebetween for allowing shaft hole 311 to pass therethrough so as to avoid interference with the assembly of trunnion 211 and shaft hole 311.

Since the second abutment 221 is connected to the end of the connection piece 222 remote from the through opening 32, the second abutment 221 is located further outside the transition piece body 21, thereby improving the support stability.

In summary, in the button switch provided in the embodiment of the present application, the limiting portion 22 is additionally provided for the transition piece assembly 2, and can be matched with the pressing plate 3 or the button assembly 1, so as to apply a force to the transition piece body 21, so that the trunnion 211 is biased in the shaft hole 311, that is, the trunnion 211 tightly abuts against the inner wall of the shaft hole 311, thereby limiting the movable space of the trunnion in the shaft hole, and avoiding the trunnion 211 from shaking in the shaft hole 311, but not affecting the swing of the transition piece body 21 on the swing plane corresponding to the rotation axis of the trunnion 211, so that the sliding track of the transition piece body 21 on the rocker can be located at the supporting position of the center of the rocker, and no skew occurs, thereby avoiding the problems of wear of the single side of the rocker, single side ablation of silver dots, sticking of silver dots, and the like, and improving the performance and the service life of the button switch.

In the present application, it is to be understood that the terms "first", "second", "third", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated.

The above description is only for facilitating the understanding of the technical solutions of the present application by those skilled in the art, and is not intended to limit the present application. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A push button switch, characterized in that it comprises a push button assembly (1), a transition piece assembly (2) and a pressure plate (3);

the transition piece assembly (2) is positioned on the inner side of the button assembly (1), and the transition piece assembly (2) comprises a transition piece body (21) and a limiting part (22) which are connected or butted against each other;

the transition piece body (21) is provided with a trunnion (211), and the trunnion (211) is rotatably positioned in a corresponding shaft hole (311) on the pressure plate (3), so that the transition piece body (21) can swing relative to the pressure plate (3) under the actuation of the button assembly (1);

the restricting portion (22) abuts against the button assembly (1) or the pressure plate (3) so that the trunnion (211) is biased in the shaft hole (311).

2. Push-button switch according to claim 1, characterized in that the pressure plate (3) has a through opening (32) opened therein, the transition piece body (21) passing through the through opening (32);

a pair of shaft hole seats (31) and a first abutting piece (33) are arranged on one side, close to the button assembly (1), of the pressing plate (3), the pair of shaft hole seats (31) are located on two opposite sides of the through opening (32), and the shaft hole (311) is located on the shaft hole seats (31);

the restricting portion (22) includes a second abutting piece (221), and the second abutting piece (221) abuts against the first abutting piece (33).

3. Push button switch according to claim 2, characterized in that at least one of said first abutment (33) and said second abutment (221) is in an elastically compressed state.

4. Push button switch according to claim 2, characterised in that the first abutment (33) is a rib provided on the pressure plate (3) projecting towards the limit portion (22) and/or the second abutment (221) is a projection on the limit portion (22) projecting towards the pressure plate (3).

5. The push-button switch according to claim 2, wherein the first abutment member (33) has a concave arc surface;

when the transition piece body (21) swings relative to the pressure plate (3), the second abutting piece (221) slides on the concave arc surface.

6. The push-button switch according to claim 2 or 5, wherein an end surface of one end of the second abutting piece (221) abutting against the first abutting piece (33) is shaped as a convex arc surface.

7. A push-button switch according to claim 6, wherein the axis of the cylinder or the centre of the sphere on which the convex arc is located on the axis of rotation of the transition piece body (21).

8. Push button switch according to claim 1, wherein the contact point of the restriction (22) with the push button assembly (1) or the pressure plate (3) is located on the rotational axis of the transition piece body (21).

9. Push button switch according to claim 2 or 3, characterized in that the second abutment (221) is located between the through opening (32) and the shaft bore seat (31).

10. Push button switch according to claim 9, characterized in that the second abutment (221) is a spring (2211);

the limiting part (22) further comprises a guide piece (223), the spring (2211) is sleeved on the guide piece (223), and two ends of the spring (2211) are respectively abutted to the transition piece body (21) and the pressing plate (3).

11. Push button switch according to one of the claims 2 to 5, characterized in that the limitation (22) comprises a connection piece (222), which connection piece (222) is connected to the transition piece body (21) and surrounds the trunnion (211) on the side of the trunnion (211) remote from the through opening (32),

the second abutment (221) is connected to the connection (222) and the second abutment (221) is further from the through opening (32) than the trunnion (211).

12. The push button switch according to claim 1, further comprising a face cover (51) and a base (52);

the button assembly (1) is arranged on the face cover (51), and the face cover (51) is connected with the pressure plate (3) or the base (52);

the transition piece assembly (2) and the platen (3) are both housed in the base (52);

the inner side of the button assembly (1) is provided with a third abutting piece, the limiting part (22) comprises a fourth abutting piece, and the fourth abutting piece abuts against the third abutting piece.