CN114688150B

CN114688150B - Switching structure and foldable support

Info

Publication number: CN114688150B
Application number: CN202011618071.XA
Authority: CN
Inventors: 黄新; 黄小凤; 余佳
Original assignee: Shenzhen Jamr Technology Co Ltd
Current assignee: Shenzhen Jamr Technology Co Ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2023-01-24
Anticipated expiration: 2040-12-30
Also published as: CN114688150A

Abstract

The invention is suitable for the field of supporting structures, and provides a switching structure and a foldable support. Wherein, switching structure includes: the connecting assembly comprises a connecting piece, a first panel, a second panel, a third panel and a fourth panel; the magnetic attraction component comprises a first magnetic part, a second magnetic part, a third magnetic part and a fourth magnetic part; the connecting sheet can be bent along the axis to be converted between a flattening state and a bending state, and when the connecting sheet is in the flattening state, the third panel and the fourth panel are mutually abutted and horizontally placed; when the connecting piece is in the bending state, the first panel and the second panel are mutually abutted and form an obtuse angle. The switching structure provided by the invention can simplify the structure and reduce the production cost.

Description

Switching structure and foldable support

Technical Field

The invention belongs to the technical field of supporting structures, and particularly relates to a switching structure and a foldable support.

Background

The foldable support of the tablet computer comprises a first panel, a second panel and a third panel, wherein the first panel is used for fixing the tablet computer, the third panel is used for fixing a keyboard, and two ends of the second panel are respectively connected with the first panel and the third panel in a rotating mode. The second panel can rotate to specific angle relative to the first panel, and the third panel can rotate to specific angle relative to the second panel, so that the tablet computer can be in an inclined placement state. In the existing design, the second panel and the first panel, the second panel and the third panel are connected by adopting a hinge structure in a rotating manner, the hinge structure comprises a pin shaft, and a first rotating rod and a second rotating rod which rotate around the pin shaft, the first rotating rod and the second rotating rod are respectively connected with the first panel, the second panel, and the third panel, so that the relative rotation of the first panel, the second panel, and the third panel is realized, in addition, the hinge structure also needs to be provided with a limiting part for limiting the rotating angles of the first panel, the second panel, and the third panel, so that the first panel can bear the tablet computer and the tablet computer can be in an inclined placing state. The rotation and the spacing of two panels are realized by adopting a hinged structure, and the problems of more parts and high manufacturing cost exist.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a switching structure and a foldable support, which aim to provide another structure for realizing the rotation and the limit of two panels.

In order to achieve the above purpose, the embodiment of the present invention provides the following technical solutions:

an adapter structure comprising:

the connecting assembly comprises a connecting piece, and a first panel, a second panel, a third panel and a fourth panel which are fixedly connected with the connecting piece, wherein the connecting piece is provided with an axis extending along the length direction, the upper surface of the connecting piece is provided with a first mounting position and a second mounting position which are positioned on two sides of the axis, the lower surface of the connecting piece is provided with a third mounting position and a fourth mounting position which are positioned on two sides of the axis, the first panel is arranged at the first mounting position, the second panel is arranged at the second mounting position, the third panel is arranged at the third mounting position, and the fourth panel is arranged at the fourth mounting position;

the magnetic attraction assembly comprises a first magnetic part arranged on the first panel, a second magnetic part arranged on the second panel, a third magnetic part arranged on the third panel and a fourth magnetic part arranged on the fourth panel, the first magnetic part and the second magnetic part are magnetically attracted and positioned on two sides of the axis, and the third magnetic part and the fourth magnetic part are magnetically attracted and positioned on two sides of the axis;

the connecting sheet can be bent along the axis to be converted between a flattening state and a bending state, and when the connecting sheet is in the flattening state, the third panel and the fourth panel are mutually abutted and horizontally placed; when the connecting piece is in the bending state, the first panel and the second panel are mutually abutted, and an included angle between the first panel and the second panel is an obtuse angle.

Optionally, the surfaces of the first and second panels facing the axis are parallel when the web is in the bent state.

Optionally, a first receiving groove for receiving the first magnetic member is formed in a surface of the first panel facing the second panel, a second receiving groove for receiving the second magnetic member is formed in a surface of the second panel facing the first panel, a third receiving groove for receiving the third magnetic member is formed in a surface of the third panel facing the fourth panel, and a fourth receiving groove for receiving the fourth magnetic member is formed in a surface of the fourth panel facing the third panel.

Optionally, an upper groove wall of the first receiving groove extends to an upper surface of the first panel and a lower groove wall thereof extends to a lower surface of the first panel, an upper groove wall of the second receiving groove extends to an upper surface of the second panel and a lower groove wall thereof extends to a lower surface of the second panel, an upper groove wall of the third receiving groove extends to an upper surface of the third panel and a lower groove wall thereof extends to a lower surface of the third panel, and an upper groove wall of the fourth receiving groove extends to an upper surface of the fourth panel and a lower groove wall thereof extends to a lower surface of the fourth panel.

Optionally, the first panel is provided with a first fixing groove at the first installation position for embedding the connecting sheet, the second panel is provided with a second fixing groove at the second installation position for embedding the connecting sheet, the third panel is provided with a third fixing groove at the third installation position for embedding the connecting sheet, and the fourth panel is provided with a fourth fixing groove at the fourth installation position for embedding the connecting sheet.

Optionally, the first magnetic member and the third magnetic member are provided in plurality and alternately arranged along the axial direction.

Optionally, the connecting piece is a metal sheet, the connecting piece can be elastically bent, and when the connecting piece is in a bent state, the elastic restoring force of the connecting piece is smaller than the adsorption force of the first magnetic piece and the second magnetic piece.

Optionally, the connecting piece has a plurality of spaced through holes at least at the axis.

A foldable support comprises the switching structure.

According to the switching structure provided by the invention, the rotation and the limit of the connecting sheet are realized through the connecting assembly, and the magnetic attraction assembly is arranged, so that the connecting sheet can be relatively stable no matter in a flat state or a bent state, and the effects of simplifying the structure and reducing the production cost are achieved. Adopt this switching structure's foldable support, can satisfy the accomodating and the user state requirement to panel computer.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

FIG. 1 is a schematic view of a foldable stand according to an embodiment of the present invention in a use state;

FIG. 2 is a disassembled schematic view of the structure of FIG. 1;

FIG. 3 is a disassembled view of the adapter structure in the state of FIG. 2;

fig. 4 is a schematic diagram of the adapting structure provided in this embodiment in a flattened state, which is a cross-sectional view of the first magnetic member and the second magnetic member;

fig. 5 is a schematic diagram of the adapting structure provided in this embodiment in a flattened state, which is a cross-sectional view of the third magnetic member and the fourth magnetic member;

fig. 6 is a partially disassembled schematic view of the adapting structure provided in this embodiment;

FIG. 7 is a schematic illustration of a connecting tab in a flattened state in an embodiment of the invention.

Wherein, in the figures, the respective reference numerals:

10. a switching structure; 111. connecting sheets; 112. a first panel; 113. a second panel; 114. a third panel; 115. a fourth panel; 121. a first magnetic member; 122. a second magnetic member; 123. a third magnetic member; 124. a fourth magnetic member; 101. a first pressing surface; 102. a second pressing surface; 103. a through hole; 20. A tablet computer; 30. a keyboard; 41. an outer protective layer; 42. and an inner protective layer.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship that is indicated based on the orientation or positional relationship as shown in the figures, which is for convenience in describing the invention and to simplify the description, and that does not indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner and is not to be construed as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

Referring to fig. 1-7, an exemplary illustration of a docking structure 10 and a foldable stand employing the same is provided.

Referring to fig. 3 to 7, the adapting structure 10 includes a connecting component and a magnetic component.

Connecting assembly, including connection piece 111, and with connection piece 111 fixed connection's first panel 112, second panel 113, third panel 114 and fourth panel 115, connection piece 111 has the axis that extends along length direction, connection piece 111's upper surface has the first installation position and the second installation position that are located the axis both sides, connection piece 111's lower surface has third installation position and the fourth installation position that are located the axis both sides, first installation position is located to first panel 112, second installation position is located to second panel 113, third installation position is located to third panel 114, fourth installation position is located to fourth panel 115. The connecting piece 111 is made of a flexible material and can be bent along the axis. The first panel 112, the second panel 113, the third panel 114 and the fourth panel 115 are made of rigid materials, the first panel 112 and the third panel 114 are fixedly connected, and the second panel 113 and the fourth panel 115 are fixedly connected. When the connecting piece 111 is bent along the axis, the first panel 112, the second panel 113, the third panel 114, and the fourth panel 115 provided on the connecting piece 111 are rotated relatively therewith.

The magnetic attraction component comprises a first magnetic part 121 arranged on the first panel 112, a second magnetic part 122 arranged on the second panel 113, a third magnetic part 123 arranged on the third panel 114 and a fourth magnetic part 124 arranged on the fourth panel 115, the first magnetic part 121 and the second magnetic part 122 are magnetically attracted and positioned on two sides of the axis, and the third magnetic part 123 and the fourth magnetic part 124 are magnetically attracted and positioned on two sides of the axis.

The connecting sheet 111 can be bent along the axis to be converted between a flattening state and a bending state, and when the connecting sheet 111 is in the flattening state, the third panel 114 and the fourth panel 115 are mutually abutted and horizontally placed; when the connecting piece 111 is in a bent state, the first panel 112 and the second panel 113 are abutted against each other, and an included angle between the first panel 112 and the second panel 113 is an obtuse angle. Note that, the third panel 114 and the fourth panel 115 abut against each other, and include an outer edge of a side of the first panel 112 facing the second panel 113 directly or indirectly abutting against a side of the second panel 113 facing the first panel 112, and an outer edge of a side of the second panel 113 facing the first panel 112 directly or indirectly abutting against a side of the first panel 112 facing the second panel 113.

For convenience of description, the first and

second panels

112 and 113 are defined as a left-right arrangement, the first and

second panels

112 and 113 are provided on the upper surface of the link piece 111 and on the left and right sides of the axis, and the third and

fourth panels

114 and 115 are provided on the lower surface of the link piece 111 and on the left and right sides of the axis. The right surface of the first panel 112 is a first pressing surface 101, the left surface of the second panel 113 is a second pressing surface 102, the right surface of the third panel 114 is a third pressing surface, and the left surface of the fourth panel 115 is a fourth pressing surface. When the connecting tab 111 is in the flattened state, the connecting tab 111 is in a horizontally extended state. The first panel 112, the second panel 113, the third panel 114, and the fourth panel 115 are horizontally disposed. The first abutting surface 101 and the second abutting surface 102 enclose to form a gap channel extending along the axial direction, so that when the left side and the right side of the connecting piece 111 are bent upwards, the two opposite sides of the first panel 112 and the second panel 113 can rotate upwards along the axial direction to get close, in other words, the gap channel avoids the movement that the first panel 112 and the second panel 113 rotate upwards to get close. When the first abutting surface 101 abuts against the second abutting surface 102, the first abutting surface 101 restricts the second panel 113 from continuing to rotate upward. When the connecting sheet 111 is in a flattened state, the third abutting surface and the fourth abutting surface abut to limit the two sides of the connecting sheet 111 to bend downwards.

In the structure shown in fig. 4 or fig. 5, when the connecting sheet 111 is in the flattened state, the first abutting surface 101 and the second abutting surface 102 are inclined toward the axial direction of the connecting sheet 111, and the third abutting surface and the fourth abutting surface are perpendicular to the horizontal plane. It should be noted that, in the structure shown in fig. 4 or fig. 5, a rectangular gap is left between the third abutting surface and the fourth abutting surface, a trapezoidal gap is left between the first abutting surface 101 and the second abutting surface 102, in an actual product, the surfaces of the third panel 114 and the fourth panel 115, which are away from the connecting sheet 111, are coated with protective layers respectively, and the rectangular gap is filled with the two protective layers, so that the third panel 114 and the fourth panel 115 are abutted by the protective layers when they are placed horizontally. The surfaces of the first panel 112 and the second panel 113, which are away from the connecting sheet 111, are covered with a protective layer, and the protective layer covers the first abutting surface 101 and the second abutting surface 102 to partially fill the trapezoidal gap, so that the first panel 112 and the second panel 113 are abutted by the protective layer in a bending state. At this time, the protective layer is recessed downward at the trapezoidal gap to form an escape channel. In other words, in this scheme, the butt can be direct butt also can be for through the mutual butt of other structures to it can to realize spacingly.

In the structure shown in fig. 4, after the protective layer is coated, the cross section of the avoidance channel is V-shaped, and in other embodiments, the cross section of the avoidance channel may also be rectangular, which is not limited herein.

The first magnetic member 121 is disposed on the first panel 112, the second magnetic member 122 is disposed on the second panel 113, the third magnetic member 123 is disposed on the third panel 114, and the fourth magnetic member 124 is disposed on the fourth panel 115. The first magnetic member 121 and the second magnetic member 122 are magnetically attracted to drive the first panel 112 and the second panel 113 to rotate upward around the axis, and the third magnetic member 123 and the fourth magnetic member 124 are magnetically attracted to drive the third panel 114 and the fourth panel 115 to rotate downward around the axis. It can be understood that the magnetic attraction force of the magnetic member decreases with increasing distance and increases with decreasing distance. When the rotating piece is in the flattened state, the distance between the third magnetic member 123 and the fourth magnetic member 124 is at the shortest position and the distance between the first magnetic member 121 and the second magnetic member 122 is at the longest position. The third magnetic member 123 and the fourth magnetic member 124 have a larger attraction force than the first magnetic member 121 and the second magnetic member 122, so that the third panel 114 presses against the fourth panel 115. When the rotating sheet is in a bent state, the attractive force of the first magnetic member 121 and the second magnetic member 122 is greater than the attractive force of the third magnetic member 123 and the fourth magnetic member 124, so that the first panel 112 is pressed against the second panel 113.

Due to the existence of the magnetic attraction assembly, no matter the connecting sheet 111 is in a flattening state or a bending state, all structural members of the connecting assembly are in a relatively fixed state, and relative movement cannot be generated under the action of external force. In addition, due to the characteristic that the magnetic parts increase in adsorption force along with the shortening of the distance, when the connecting piece 111 is located between the flattening position and the bending position, the adsorption forces of the upper and lower pairs of magnetic parts are offset to a certain extent, so that the magnetic adsorption force received by the connecting piece 111 at the flattening position and/or the bending position is the largest. When the connecting sheet 111 is located between the flattening position and the bending position, the magnetic components cooperate to drive the connecting sheet 111 to rotate to the flattening position or the bending position rapidly, so that the effect of rapid rotation is achieved.

When the adapting structure 10 of the present embodiment is applied to a foldable stand, please refer to fig. 1 and fig. 2, the foldable stand includes the adapting structure 10 and a keyboard 30, a first panel 112 and a third panel 114 are fixedly connected to form a first rotating block, a second panel 113 and a fourth panel 115 are fixedly connected to form a second rotating block, and the first rotating block and the second rotating block are rotatably connected through a connecting piece 111. The second rotating block is rotatably connected with the keyboard 30, and the third panel 114 is used for fixing the tablet computer 20. The foldable support has a storage state and a use state. When the foldable stand is in the storage state, the first rotating block and the second rotating block are horizontally stacked on the keyboard 30, and the tablet computer 20 is located between the third panel 114 and the keyboard 30. When the foldable stand is in use, the second rotating block rotates upward to form an acute angle with the keyboard 30, the first rotating block rotates upward to form an included angle B with the second rotating block, the included angle B is an obtuse angle, and the tablet personal computer 20 is fixed by the third panel 114 to form an inclined state with an elevation angle greater than 90 degrees (the included angle between the display surface and the horizontal plane) so as to facilitate reading by a user. In the illustrated structure, the keyboard 30 is rotatably connected to the second rotating block through a hinge structure (the hinge structure includes a pin, and a first rotating rod and a second rotating rod that rotate around the pin, the first rotating rod and the second rotating rod are respectively connected to the second panel 113 and the keyboard 30), and the pin is provided with a damper to enable the first rotating rod and the second rotating rod to maintain the rotated positions after rotating to a specific angle. In the illustrated structure, the surface of the adapting structure 10 facing the tablet pc 20 is provided with an inner protection layer 42, and the material of the inner protection layer 42 may be nylon or microfiber. The foldable support is provided with an outer protective layer 41 on the outer side of the adapting structure 10 and the keyboard 30, and the outer protective layer 41 can be made of PU material. In this embodiment, the outer protection layer 41 covers the upper surfaces of the first panel 112 and the second panel 113, and is recessed downwards at the trapezoidal gap to form a gap channel, so as to prevent the first panel 112 and the second panel 113 from protruding upwards when rotating upwards to close, which may affect the appearance. The inner protective layer 42 covers the lower surfaces of the third panel 114 and the fourth panel 115 and extends to the third abutting surface and the fourth abutting surface to fill the rectangular gap. In combination with the foregoing, in the case where the outer protective layer 41 is coated, the abutment of the first panel 112 and the second panel 113 is achieved by the bent abutment of the outer protective layer 41 in the trapezoidal gap region. The abutment of the first panel 112 and the second panel 113 is achieved by the abutment of the inner protective layer 42 at the rectangular gap.

In this embodiment, the third panel 114 is provided with a plurality of magnets, and the magnets built in the tablet computer 20 are mutually attracted, so as to realize the detachable connection between the third panel 114 and the tablet computer 20. The tablet computer 20 is heavier than the adapting structure 10, and in the case that the tablet computer 20 is connected to the third panel 114, the gravity of the tablet computer 20 can improve the relative stability of the foldable stand in the storage and use states. Specifically, when the foldable stand is in the storage state, the display surface of the tablet personal computer 20 faces the keyboard 30, the gravity of the tablet personal computer 20 increases the resistance of the third panel 114 to rotate upwards, and the attractive force of the third magnetic member 123 and the fourth magnetic member 124 together improves the stability of the foldable stand. When the foldable stand is in a use state, the gravity of the tablet computer 20 is converted into a pressure that the first panel 112 presses against the second panel 113, and together with the attraction force of the first magnetic member 121 and the second magnetic member 122, the resistance of the third panel 114 to reverse turning is improved, so that the stability of the foldable stand is improved.

In this embodiment, referring to fig. 2, when the connecting piece 111 is in a bent state, an included angle B between the first panel 112 and the second panel 113 is an obtuse angle, and an included angle B between the third panel 114 and the fourth panel 115 is an obtuse angle. The lower surface of the third panel 114 is used for fixing the tablet computer 20, and when the third panel 114 extends away from the keyboard 30, the display surface of the tablet computer 20 is inclined upward to facilitate reading, and an included angle between the third panel 114 and the horizontal plane is an acute angle. It is understood that the angle between the third panel 114 and the horizontal plane is equal to the angle B between the third panel 114 and the fourth panel 115 minus the angle between the fourth panel 115 and the horizontal plane. In a state where the fourth panel 115 is perpendicular to the horizontal plane, an included angle B between the third panel 114 and the fourth panel 115 is an obtuse angle, which can ensure an inclined state of the third panel 114. In practical use, in order to raise the tablet computer 20 and ensure the stability of the structure, the angle between the fourth panel 115 and the horizontal plane is preferably 60-70 degrees in the use state. The angle B between the third panel 114 and the fourth panel 115 is preferably 150 DEG-170 DEG

By last, the switching structure 10 that this embodiment provided realizes the rotation and the spacing of connection piece 111 through coupling assembling, through the setting of magnetism subassembly, makes no matter connection piece 111 is in the exhibition flat state or the state of buckling, can both realize the relative firm of each structure of switching structure 10, reaches the effect of simplifying the structure and reduction in production cost. The foldable support adopting the adapting structure 10 can meet the requirements of the tablet personal computer 20 on the storage and use states.

In another embodiment of the present application, the first abutting surface 101 and the second abutting surface 102 are parallel when the connecting piece 111 is in the bent state. It is understood that the included angle B between the first panel 112 and the second panel 113 is determined by the position where the first abutting surface 101 and the second abutting surface 102 abut against each other. The positions of the pressing lines of the first panel 112 and the third panel 114 on the section perpendicular to the axis are named as a first end point and a second end point, and the first end point and the second end point respectively form an included angle with the connecting line of the axis, which is a supplementary angle of the included angle B. When the mutual abutting area of the first abutting surface 101 and the second abutting surface 102 is a plane rather than a straight line, the first abutting surface 101 and the second abutting surface 102 are attached to each other and are straight lines on a section perpendicular to the axis, and the included angle of the two straight lines is a supplementary angle of the included angle B. The first panel 112 and the second panel 113 are in surface contact with each other, and the pressure applied to the first panel 112 and the second panel 113 during the contact can be reduced as compared with the line contact, thereby improving the stability of the contact between the first panel 112 and the second panel 113.

The section of the clearance channel is V-shaped, and the included angle of the surfaces on the two sides of the clearance channel is the supplementary angle of the included angle B. The included angle B between the first panel 112 and the second panel 113 is preferably 150 ° to 170 °, and the included angle between both side surfaces of the gap channel is preferably 10 ° to 30 °. The person skilled in the art may further select the included angle as 10 °, 12 °, 14 °, 15 °, 17 °, 19 °, 20 °, 21 °, 23 °, 25 °, 26 °, 27 °, 28 °, 30 °, etc., which is not limited herein.

In this embodiment, the first magnetic member 121 and the second magnetic member 122 are symmetrically disposed. The third magnetic member 123 and the fourth magnetic member 124 are symmetrically disposed. It is understood that the larger the facing surfaces of the first and second

magnetic members

121 and 122 are, the larger the attraction force is. The smaller the distance between the first and second

magnetic members

121 and 122, the greater the attraction force.

The first magnetic member 121 and the second magnetic member 122 may be disposed at upper ends of both sides of the gap path, or may cover both side surfaces of the gap path. The arrangement of the first magnetic member 121 and the second magnetic member 122 close to the gap passage is beneficial to improve the attraction force of the first magnetic member 121 and the second magnetic member 122 when the connecting piece 111 is in the bending state.

Referring to fig. 4, the first panel 112 has a first receiving groove on the first position-limiting surface for receiving the first magnetic member 121, and the second panel 113 has a second receiving groove on the second position-limiting surface for receiving the second magnetic member 122. The arrangement that the first magnetic part 121 and the second magnetic part 122 are attached to the first limiting surface and the second limiting surface can reduce the distance between the first magnetic part 121 and the second magnetic part 122, so that the adsorption force of the first magnetic part 121 and the second magnetic part 122 is improved when the connecting piece 111 is in a bending state. Similarly, referring to fig. 5, the third panel 114 has a third receiving groove formed on the third position-limiting surface for receiving the third magnetic element 123, and the fourth panel 115 has a fourth receiving groove formed on the fourth position-limiting surface for receiving the fourth magnetic element 124.

Referring to fig. 4, an upper groove wall of the first receiving groove extends to the upper surface of the first panel 112 and a lower groove wall thereof extends to the lower surface of the first panel 112; the upper wall of the second receiving groove extends to the upper surface of the second panel 113 and the lower wall thereof extends to the lower surface of the second panel 113. This arrangement is advantageous in increasing the surface area of the first magnetic surface facing the second magnetic member 122, thereby increasing the attraction force of the first magnetic member 121 and the second magnetic member 122 in the bent state of the connecting piece 111. Similarly, referring to fig. 5, the upper wall of the third receiving groove extends to the upper surface of the third panel 114 and the lower wall thereof extends to the lower surface of the third panel 114, the upper wall of the fourth receiving groove extends to the upper surface of the fourth panel 115 and the lower wall thereof extends to the lower surface of the fourth panel 115. This arrangement is advantageous in that the surface area of the third magnetic member 123 and the fourth magnetic member 124 facing each other is increased, thereby increasing the attraction force of the third magnetic member 123 and the fourth magnetic member 124 in the flattened state of the connecting piece 111.

In another embodiment of the present application, referring to fig. 4 and 5, the ratio of the thicknesses of the first magnetic element 121 and the third magnetic element 123 is: 1 to 2. In combination with the use scene of the foldable support, the first magnetic member 121 is thicker than the third magnetic member 123, and under the condition that the length and the width are the same, the magnetic adsorption force received by the foldable support in the use state is greater than the magnetic adsorption force received in the storage state, so that the installation stability of the tablet personal computer 20 can be improved, and the convenience in operation of the tablet personal computer 20 from the storage state to the use state is facilitated. One skilled in the art can further set the ratio of the thicknesses of the first magnetic member 121 and the third magnetic member 123 to 1.0, 1.1, 1.2, 1.3, 1.5, 1.65, 1.7, 1.8, 1.9, 2.0, etc. And are not intended to be limited solely thereto.

In another embodiment of the present application, referring to fig. 4 or fig. 5, a first fixing groove for the connecting sheet 111 to be embedded into is formed at a first mounting position of the first panel 112, a second fixing groove for the connecting sheet 111 to be embedded into is formed at a second mounting position of the second panel 113, a third fixing groove for the connecting sheet 111 to be embedded into is formed at a third mounting position of the third panel 114, and a fourth fixing groove for the connecting sheet 111 to be embedded into is formed at a fourth mounting position of the fourth panel 115. This arrangement allows the connecting piece 111 to be hidden within the first panel 112, the second panel 113, the third panel 114, and the fourth panel 115, making the structure more compact.

In another embodiment of the present application, referring to fig. 6, the first magnetic member 121 and the third magnetic member 123 are provided in plurality and alternately arranged along the axial direction.

In this embodiment, all of the first magnetic members 121 and the third magnetic members 123 located on the left side of the coupling piece 111 have the same magnetic pole, and all of the second magnetic members 122 and the fourth magnetic members 124 located on the right side of the coupling piece 111 have the same magnetic pole and are opposite to the magnetic pole of the first magnetic member 121. This arrangement can reduce interference between the magnetic members. In other embodiments, the first magnetic member 121 and the third magnetic member 123 may also be bar-shaped and extend along the axial direction.

In another embodiment of the present application, the connecting piece 111 is a metal sheet, the connecting piece 111 can be elastically bent, and when the connecting piece 111 is in a bent state, an elastic restoring force thereof is smaller than an attracting force of the first magnetic piece 121 and the second magnetic piece 122. The metal sheet is selected as the connecting sheet 111, and has good fatigue resistance, so that the service life of the connecting sheet 111 is prolonged. In other embodiments, the connecting piece 111 may be made of fiber cloth or other flexible materials.

Referring to fig. 7, the connecting piece 111 has a plurality of through holes 102 arranged at intervals at least at the axis. The flexibility of the metal sheet is improved by the through-hole 102. In the structure shown in fig. 7, the connecting piece 111 extends on both sides along the axis to form a rectangular perforated area in which the through holes 102 are arranged. The number and size of the through holes can be set by those skilled in the art according to actual needs, and are not limited herein.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. An adapter structure, comprising:

the connecting assembly comprises a connecting piece, and a first panel, a second panel, a third panel and a fourth panel which are fixedly connected with the connecting piece, wherein the connecting piece is provided with an axis extending along the length direction, the upper surface of the connecting piece is provided with a first installation position and a second installation position which are positioned on two sides of the axis, the lower surface of the connecting piece is provided with a third installation position and a fourth installation position which are positioned on two sides of the axis, the first panel is arranged at the first installation position, the second panel is arranged at the second installation position, the third panel is arranged at the third installation position, and the fourth panel is arranged at the fourth installation position;

the connecting piece can be bent along the axis to be switched between a flattening state and a bending state, and when the connecting piece is in the flattening state, the third panel and the fourth panel are mutually abutted and horizontally placed; when the connecting piece is in the bending state, the first panel and the second panel are mutually abutted, and an included angle between the first panel and the second panel is an obtuse angle.

2. The transition structure of claim 1, wherein the surfaces of the first and second panels facing the axis are parallel when the web is in the folded position.

3. The adapting structure according to claim 1, wherein the first panel has a first receiving groove formed on a surface thereof facing the second panel for receiving the first magnetic member, the second panel has a second receiving groove formed on a surface thereof facing the first panel for receiving the second magnetic member, the third panel has a third receiving groove formed on a surface thereof facing the fourth panel for receiving the third magnetic member, and the fourth panel has a fourth receiving groove formed on a surface thereof facing the third panel for receiving the fourth magnetic member.

4. The adapting structure according to claim 3, wherein the upper slot wall of the first receiving slot extends to the upper surface of the first panel and the lower slot wall thereof extends to the lower surface of the first panel, the upper slot wall of the second receiving slot extends to the upper surface of the second panel and the lower slot wall thereof extends to the lower surface of the second panel, the upper slot wall of the third receiving slot extends to the upper surface of the third panel and the lower slot wall thereof extends to the lower surface of the third panel, and the upper slot wall of the fourth receiving slot extends to the upper surface of the fourth panel and the lower slot wall thereof extends to the lower surface of the fourth panel.

5. The transfer structure of claim 1, wherein the first panel defines a first fixing groove at the first mounting location for the connecting sheet to be inserted into, the second panel defines a second fixing groove at the second mounting location for the connecting sheet to be inserted into, the third panel defines a third fixing groove at the third mounting location for the connecting sheet to be inserted into, and the fourth panel defines a fourth fixing groove at the fourth mounting location for the connecting sheet to be inserted into.

6. The adapter structure according to any one of claims 1 to 5, wherein the first magnetic member and the third magnetic member are plural and arranged alternately in the axial direction.

7. The adapting structure according to any one of claims 1 to 5, wherein the connecting piece is a metal sheet, the connecting piece can be elastically bent, and when the connecting piece is in a bent state, the elastic restoring force of the connecting piece is smaller than the adsorption force of the first magnetic piece and the second magnetic piece.

8. The adapter structure of claim 7, wherein the tab has a plurality of spaced-apart through-holes at least at the axis.

9. A foldable stand, comprising a transition structure according to any one of claims 1 to 8.