CN218242320U - Elastic piece and electronic equipment - Google Patents

Abstract

The application provides a shell fragment and electronic equipment, the shell fragment is used for elastic support between first structure spare and second structure spare, including contact site, first linking arm and second linking arm. The elastic arm structure is arranged on at least one of the first connecting arm and the second connecting arm, the extending direction of the elastic arm structure is obliquely arranged between the first structural component and the second structural component, so that when the first structural component moves towards the direction close to the second structural component, the first structural component extrudes the elastic arm structure through the contact part, and the elastic arm structure generates buckling deformation. Thereby make the shell fragment keep invariable relatively at the elasticity of bucking deformation in-process for the shell fragment can keep invariable relatively and be in the elasticity in safety range when the displacement volume of compression is great, avoid the shell fragment to produce the too big elasticity that changes, thereby cause the damage of first structure or second structure to become invalid or produce fatigue damage, improved the life of first structure or second structure.

Description

Elastic sheet and electronic equipment

Technical Field

The application relates to the field of elastic supporting structures, in particular to an elastic sheet and electronic equipment.

Background

A spring is an elastic structural member that is easily bent in only one direction, the plane of minimum stiffness, and has a large tensile stiffness and bending stiffness in the other direction. In electronic devices, spring plates are often used as sensitive elements, elastic support members, positioning devices, flexible connecting members, and the like. As shown in fig. 1 and fig. 2, fig. 1 is a common prior art spring 1', and fig. 2 is a graph showing a spring force displacement curve of the prior art spring 1', wherein the spring force of the spring 1 'increases linearly with the increase of the displacement of the spring 1'.

In one application scenario, the spring plate is used to elastically connect the first structural member and the second structural member, for example: in the electronic equipment, the display screen as the first structural component is elastically connected with the middle frame as the second structural component through the elastic sheet, and the elastic sheet is made of a conductive material, so that the display screen is connected with the middle frame through the elastic sheet and is grounded. At the moment, the elastic sheet is squeezed between the display screen and the middle frame, so that the elastic sheet has certain elastic force, and the contact reliability between the elastic sheet and the display screen and between the elastic sheet and the middle frame is ensured.

When the electronic device is impacted or squeezed, the display screen easily moves towards or away from the middle frame under the external impact force, so that the compressed displacement of the elastic sheet 1 'is obviously changed, and the elastic force of the elastic sheet 1' in the prior art is increased along with the increase of the compressed displacement in a positive linear trend. Therefore, the elastic sheet 1' can easily generate overlarge changed elastic force on the display screen, and the display screen is prone to generating the problems of spots, damage and the like. Therefore, when the displacement of the spring sheet 1' is greatly changed, the elastic force of the spring sheet 1' is easily changed in a large range, so that the first structural member or the second structural member elastically connected with the spring sheet 1' is damaged or fails or generates fatigue damage.

SUMMERY OF THE UTILITY MODEL

The utility model provides an aim at solve among the prior art elasticity of shell fragment and constantly increase along with the increase of the displacement volume of compressed, lead to the shell fragment to cause the damage to inefficacy or produce fatigue damage problem to first structure or second structure with shell fragment elastic connection under the great condition of displacement volume change of compressed easily.

The embodiment of the application provides a shell fragment for set up between relative first structure and the second structure that sets up, and the first surface of first structure and the first surface of second structure set up relatively, first structure can move towards the direction that is close to or keeps away from the second structure in the first direction for the second structure, and the first surface of first direction perpendicular to second structure, and the shell fragment includes:

a contact portion having a first end and a second end disposed opposite to each other and adapted to contact a first surface of a first structural member;

the first connecting arm is formed by extending downwards from the first end of the contact part;

a second connecting arm formed by extending downwards from the second end of the contact part;

wherein, at least one linking arm in first linking arm and the second linking arm sets to the elastic arm structure, the one end that the contact site was kept away from to the elastic arm structure is the stiff end, the one end that the contact site was connected to the elastic arm structure is the link, the stiff end is used for being connected with the first surface fixed of second structure, and the elastic arm structure is the slope setting for the first direction from the extending direction of link to stiff end, when making first structure move towards the direction that is close to the second structure on the first direction, under the pressure effect that first structure was applyed, the contact site moves towards the direction that is close to the second structure on the first direction, and extrusion elastic arm structure produces the buckling deformation.

Adopt above-mentioned technical scheme, set up the linking arm of elastic arm structure in the shell fragment, can produce buckling deformation when compressed, thereby make the elastic arm structure keep invariable relatively at the elasticity of buckling deformation process, make the shell fragment can produce invariable relatively and be in the elasticity in safety range when the displacement volume change of compression is great, avoid the shell fragment to produce the great elasticity that changes, thereby cause the damage inefficacy or the production fatigue damage of first structure spare or second structure spare, the life of first structure spare or second structure spare has been improved.

In some embodiments, the resilient arm structure is in the form of a linear strip structure.

In some embodiments, the contact portion has a strip structure extending linearly, and a thickness direction of the contact portion is parallel to the first direction.

In some embodiments, the extending direction of the elastic arm structure from the connection end to the fixed end is inclined at an angle of 15 ° to 45 ° with respect to the first direction.

In some embodiments, a plane where the first surface of the second structural member is located is taken as a projection plane, and a projection of the elastic arm structure on the projection plane is gradually far away from a projection of the contact part on the projection plane from the connecting end to the fixed end.

In some embodiments, the fixed end of the elastic arm structure is bent downward to form an arc-shaped arm, and an end of the arc-shaped arm away from the fixed end is used for being fixedly connected with the first surface of the second structural member, so that the fixed end of the elastic arm structure is fixedly connected with the first surface of the second structural member through the arc-shaped arm. The effort that the stiff end of elastic arm structure produced when being fixed in the second structure passes through the arc arm dispersion and acts on the first surface of second structure for the elastic arm structure is at the deformation in-process, and the condition of stress concentration can not appear at the stiff end of elastic arm structure, and makes the elastic arm structure be in the elasticity work interval all the time, thereby avoids the stiff end of elastic arm structure to appear surrender phenomenon at the deformation in-process, improves the durability of elastic arm structure.

In some embodiments, the arc-shaped arm extends downward and bends toward the inner side from the fixed end of the elastic arm structure, so that a projection of an end of the arc-shaped arm away from the fixed end on a projection plane is located in a projection of the elastic arm structure on the projection plane, wherein the projection plane is a plane on which the first surface of the second structural member is located.

In some embodiments, the fixed end of the elastic arm structure is bent downward and extends outward to form a U-shaped arm, so that a projection of the U-shaped arm on a projection plane is located outside a projection of the elastic arm structure on the projection plane, and the projection plane is a plane where the first surface of the second structural member is located;

wherein, the U-shaped arm includes the upper arm, the bending arm and the underarm that meet in proper order along the extending direction of U-shaped arm, and the upper arm sets up with the underarm relatively, and the one end that the bending arm was kept away from to the upper arm meets with the stiff end of elastic arm structure, and the one end that the bending arm was kept away from to the underarm is the free end, and the underarm deviates from the surface of upper arm be used for with the first surface fixed connection of second structure for the stiff end of elastic arm structure passes through the first surface fixed connection of U-shaped arm and second structure.

Adopt above-mentioned technical scheme, the effort that the stiff end of elastic arm structure produced when being fixed in the second structure can be through the first surface of the 18 dispersion effects on second structure of U-shaped arm for the elastic arm structure is at the deformation in-process, and the condition of stress concentration can not appear in the stiff end of elastic arm structure, and makes the elastic arm structure be in elasticity work interval all the time, thereby avoids the stiff end of elastic arm structure to appear surrender the phenomenon at the deformation in-process, improves the durability of elastic arm structure.

In some embodiments, the upper and lower arms of the U-shaped arm each extend in a direction perpendicular to the first direction, and the bent arm extends in a direction parallel to the first direction.

In some embodiments, the fixed end of the elastic arm structure bends downward and outwards to form a stepped supporting arm, so that the projection of the stepped supporting arm on the projection plane is located outside the projection of the elastic arm structure on the projection plane, and the projection plane is a plane where the first surface of the second structural member is located;

the ladder-shaped supporting arm comprises an arc-shaped arm and a fixed arm which are sequentially connected along the extending direction of the ladder-shaped supporting arm, the arc-shaped arm extends downwards from the fixed end of the elastic arm structure in the first direction and extends towards the direction away from the elastic arm structure in the direction perpendicular to the first direction, the fixed arm is L-shaped along the extending direction, the fixed arm extends towards the direction away from the arc-shaped arm from one end, away from the fixed end, of the arc-shaped arm in the direction perpendicular to the first direction and then extends towards the first surface of the second structural member in the direction parallel to the first direction to form an L-shaped extending track, and one end, away from the arc-shaped arm, of the fixed arm is fixedly connected with the first surface of the second structural member, so that the fixed end of the elastic arm structure is fixedly connected with the first surface of the ladder-shaped structural member through the supporting arm.

Adopt above-mentioned technical scheme, the effort that the stiff end of elastic arm structure produced when being fixed in the second structure can pass through the first surface of echelonment support arm dispersion action on the second structure for the elastic arm structure is at the deformation in-process, and the condition of stress concentration can not appear at the stiff end of elastic arm structure, and makes the elastic arm structure be in the elasticity work interval all the time, thereby avoids the stiff end of elastic arm structure to appear surrender phenomenon at the deformation in-process, improves the durability of elastic arm structure.

In some embodiments, the elastic sheet further includes a mounting plate disposed opposite to the contact portion, ends of the first connecting arm and the second connecting arm departing from the contact portion are mounted on the mounting plate, and the mounting plate is configured to be fixedly connected to the first surface of the second structural member, so that the end of the elastic sheet departing from the contact portion is fixedly connected to the first surface of the second structural member through the mounting plate.

By adopting the technical scheme, on the one hand, the action area between one end of the first connecting arm and the second connecting arm, which deviates from the contact part, and the first surface of the second structural member is increased, so that the pressure intensity is reduced, and the phenomenon that the second structural member is damaged or generates structural fatigue due to overlarge pressure intensity of the acting force of one end of the first connecting arm and the second connecting arm, which deviates from the contact part, on the first surface of the second structural member is avoided. On the other hand, the elastic sheet is fixedly arranged on the first surface of the second structural member through the mounting plate, so that the fixing area between the elastic sheet and the first surface of the second structural member can be increased, and the stability and the reliability of the fixation of the elastic sheet are effectively improved.

In some embodiments, the first connecting arm and the second connecting arm are each provided in a resilient arm structure, and the first connecting arm and the second connecting arm are symmetrically provided with respect to a virtual plane passing through a center line of the contact portion in an extending direction thereof and parallel to the first direction.

In some embodiments, when the resilient tab further comprises a mounting plate, the fixed end of the first connecting arm and the fixed end of the second connecting arm are both fixedly mounted to the mounting plate.

In some embodiments, the first connecting arm is provided as a resilient arm structure and the second connecting arm is provided with a guide;

the elastic sheet further comprises a guide rail, the guide rail is used for being fixed on a first surface of the second structural member, the guide rail is provided with a guided portion, the guided portion of the second connecting arm is in sliding connection with the guided portion of the guide rail, when the first structural member moves towards the direction close to the second structural member in the first direction, under the action of pressure applied by the first structural member, the contact portion moves towards the direction close to the second structural member in the first direction, and the first connecting arm is extruded to generate buckling deformation, and the second connecting arm is driven to slide towards the second structural member in the first direction relative to the guide rail. The sliding fit of the guide rail and the second connecting arm can limit movement of the first structural member relative to the second structural member in a direction perpendicular to the first direction, such that the first structural member can be stably moved in the first direction toward or away from the second structural member. And the guide rail and the second connecting arm of the elastic sheet can be arranged along the first direction, so that the guide rail and the second connecting arm of the elastic sheet have narrow sizes in the direction perpendicular to the first direction, and the elastic sheet is suitable for application scenes with one side of the elastic sheet limited in space.

In some embodiments, the guided portion is provided as a sliding groove, and the guide portion is provided as a slider and is located at an end of the second connecting arm facing away from the contact portion.

In some embodiments, when the spring plate further comprises a mounting plate, the fixed end of the first connecting arm is fixedly mounted to the mounting plate, and the guide rail is mounted to the mounting plate such that the guide rail is fixedly connected to the first surface of the second structural member through the mounting plate.

By adopting the technical scheme, on the one hand, the action area between one end of the first connecting arm and the second connecting arm, which deviates from the contact part, and the first surface of the second structural member is increased, so that the pressure intensity is reduced, and the phenomenon that the second structural member is damaged or generates structural fatigue due to overlarge pressure intensity of the acting force of one end of the first connecting arm and the second connecting arm, which deviates from the contact part, on the first surface of the second structural member is avoided. On the other hand, the elastic sheet is fixedly arranged on the first surface of the second structural member through the mounting plate, so that the fixing area between the elastic sheet and the first surface of the second structural member can be increased, and the stability and the reliability of the fixation of the elastic sheet are effectively improved.

The embodiment of the application also provides electronic equipment which comprises the elastic sheet in any one of the embodiments.

In some embodiments, the electronic device further includes a display module as the first structural member and a middle frame as the second structural member, at least two elastic pieces are disposed between the display module and the middle frame, and a contact portion of each elastic piece abuts against a surface of the display module facing the middle frame. Thereby make electronic equipment at the in-process of normal use, the shell fragment can be elastic connection between display module and center reliably, and when electronic equipment received outside great impact, for example under the electronic equipment takes place to fall, display module can move towards or deviate from the center and remove, make the displacement volume of shell fragment compressed increase or reduce, make the displacement volume of shell fragment compressed produce great change, the shell fragment still can keep invariable elasticity relatively this moment, thereby avoid the elasticity of shell fragment to produce great change, cause display module to produce spot class problem, damage inefficacy or produce fatigue damage, improve electronic equipment's durability.

Drawings

Fig. 1 is a schematic structural diagram of a spring plate in the prior art;

fig. 2 is a schematic diagram of an elastic displacement curve when an elastic sheet is deformed in the prior art;

fig. 3 is a schematic structural view illustrating an elastic piece elastically connected between a first structural member and a second structural member according to an embodiment of the present disclosure;

fig. 4a is a schematic perspective view of a spring plate according to an embodiment of the present application;

fig. 4b is a front view of a spring plate according to an embodiment of the present disclosure;

FIG. 5 is a schematic diagram illustrating deformation of the resilient plate of FIG. 4 a;

fig. 6 is a schematic diagram illustrating an elastic displacement curve of an elastic sheet according to an embodiment of the present application in an ideal state;

FIG. 7 is a schematic diagram of an elastic force displacement curve of the elastic sheet in FIG. 4a when the elastic sheet is deformed;

fig. 8 is a schematic structural view illustrating an elastic sheet applied to an electronic device according to an embodiment of the present application;

fig. 9a is a schematic perspective view of a spring plate provided with an arc-shaped arm according to an embodiment of the present application;

FIG. 9b is a front view of the spring plate with arc-shaped arms according to the embodiment of the present disclosure;

fig. 10a is a schematic perspective view of a spring plate provided with a stepped support arm according to an embodiment of the present disclosure;

FIG. 10b is a front view of a spring plate with a stepped support arm according to an embodiment of the present disclosure;

FIG. 11 is a front view of the spring plate with U-shaped arms according to the embodiment of the present disclosure;

fig. 12a is a schematic perspective view of a spring plate according to another embodiment of the present application;

fig. 12b is a front view of a spring plate according to another embodiment of the present application.

Description of the reference numerals:

Prior Art

1' and a spring plate;

the embodiments of the present application

1. A spring plate;

11. a first connecting arm;

12. a second connecting arm; 121. a guide portion;

13. a contact portion;

131. a first end; 132. a second end;

14. a fixed end; 15. a connecting end; 16. an arc-shaped arm;

17. a stepped support arm;

171. an arc-shaped arm; 172. a fixed arm;

18. a U-shaped arm;

181. an upper arm; 182. a bending arm; 183. a lower arm;

19. mounting a plate;

20. a guide rail; 21. a guided portion;

2. a first structural member;

3. a second structural member;

a. a first surface of a first structural member; b. a first surface of a second structural member; k. a virtual plane; y, center line; x, a first direction.

Detailed Description

The following description is given by way of specific embodiments and other advantages and benefits of the present application will become apparent to those skilled in the art from the disclosure herein. While the description of the present application will be presented in conjunction with certain embodiments, this is not intended to limit the features of this application to that embodiment. On the contrary, the intention of the application of the present application in combination with the embodiments is to cover alternatives or modifications as may be extended based on the claims of the present application. In the following description, numerous specific details are included to provide a thorough understanding of the present application. The present application may be practiced without these particulars. Moreover, some of the specific details have been omitted from the description in order to avoid obscuring or obscuring the focus of the present application. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

It should be noted that in this specification, like reference numerals and letters refer to like items in the following drawings, and thus, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.

In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

Referring to fig. 3 to 8, fig. 3 is a schematic structural view illustrating an elastic sheet elastically connected between a first structural member and a second structural member according to an embodiment of the present disclosure, fig. 4a and 4b are schematic structural views illustrating the elastic sheet according to the embodiment of the present disclosure, fig. 5 is a schematic structural view illustrating deformation of the elastic sheet shown in fig. 4a, fig. 6 is a schematic diagram illustrating an elastic displacement curve of the elastic sheet according to the embodiment of the present disclosure in an ideal state, fig. 7 is a schematic diagram illustrating the elastic displacement curve of the elastic sheet shown in fig. 4a when the elastic sheet is deformed, and fig. 8 is a schematic structural view illustrating application of the elastic sheet to an electronic device according to the embodiment of the present disclosure.

As shown in fig. 3 to 8, the elastic sheet 1 may be elastically connected between the first structural member 2 and the second structural member 3, and the first structural member 2 can move towards or away from the second structural member 3 relative to the second structural member 3. In one embodiment, the bottom of the spring 1 is fixed (e.g., welded, etc.) to the second structural member 3, and the top of the spring 1 is in contact with the first structural member 2. It can be understood by those skilled in the art that the elastic sheet 1 may be connected to the first structural member 2 and the second structural member 3 in other ways, for example, the bottom of the elastic sheet 1 is in contact with the second structural member 3, and the top of the elastic sheet 1 is fixed to the first structural member 2, or the bottom of the elastic sheet 1 is fixed to the second structural member 3, and the top of the elastic sheet 1 is fixed to the first structural member 2, or the bottom of the elastic sheet 1 is in contact with the second structural member 3, and the top of the elastic sheet 1 is in contact with the first structural member 2.

Under a normal working state, the elastic sheet 1 is squeezed between the first structural member 2 and the second structural member 3, so that the elastic sheet 1 is elastically deformed to generate elastic force, elastic force provided by the elastic force of the elastic sheet 1 is formed between the elastic sheet 1 and the first structural member 2 and between the elastic sheet 1 and the second structural member 3, and the elastic sheet 1 can be kept in contact connection with the first structural member 2 and the second structural member 3. When the first structural member 2 moves in a direction away from the second structural member 3, the compressed displacement of the elastic sheet 1 is reduced, and when the first structural member 2 moves in a direction close to the second structural member 3, the compressed displacement of the elastic sheet 1 is increased, so that the elastic sheet 1 can be always kept in contact connection with the first structural member 2 and the second structural member 3. In the process that the compressed displacement of the elastic sheet 1 is increased or reduced, the elastic force of the elastic sheet 1 can be kept basically constant, so that the excessive change of the elastic force of the elastic sheet 1 is avoided, on one hand, when the elastic force of the elastic sheet 1 is increased, the elastic force of the elastic sheet 1 easily exceeds the bearable range of the first structural member 2 and/or the second structural member 3, and the first structural member 2 and/or the second structural member 3 are damaged; on the other hand, the changed elastic force is likely to cause fatigue damage to the first structural member 2 and/or the second structural member 3, thereby reducing the service life of the first structural member 2 and/or the second structural member 3. Therefore, the elastic sheet 1 of the embodiment of the present application can keep its own elastic force in a relatively constant state when the compressed displacement amount changes greatly, thereby improving the durability of the elastic sheet 1 and reducing the damage to the first structural member 2 and/or the second structural member 3.

In one embodiment, the first structure 2 has a first surface a facing the second structure 3, the second structure 3 has a first surface b facing the first structure 2, and the first surface a of the first structure 2 is disposed opposite the first surface b of the second structure 3, and the first structure 2 is movable relative to the second structure 3 in a first direction X towards or away from the second structure 3, wherein the first direction X is perpendicular to the first surface b of the second structure 3.

In one embodiment, the first surface a of the first structural member 2 and the first surface b of the second structural member 3 are both arranged in a plane, so that the elastic sheet 1 is smoothly and elastically connected between the first structural member 2 and the second structural member 3. It will be understood by those skilled in the art that the elastic sheet 1 can be elastically connected between any relatively movable first structural member 2 and second structural member 3, and there is no particular requirement for the shapes of the first surface a of the first structural member 2 and the first surface b of the second structural member 3, and therefore, in other embodiments, the first surface a of the first structural member 2 and the first surface b of the second structural member 3 may adopt other shapes such as an arc surface, a wave shape, a circular surface, and the like.

When the first surface b of the second structural member 3 is in a non-planar arrangement, the first structural member 2 is movable relative to the second structural member 3 in a first direction X towards or away from the second structural member 3, where the first direction X is: the first surface b perpendicular to the second structural member 3 corresponds to the section of the spring plate 1.

In one embodiment, the spring plate 1 comprises a contact portion 13, a first connecting arm 11 and a second connecting arm 12. Wherein, the contact portion 13 has a first end 131 and a second end 132 opposite to each other, the first connecting arm 11 is formed by extending downward from the first end 131 of the contact portion 13, and the second connecting arm 12 is formed by extending downward from the second end 132 of the contact portion 13. One end of the first connecting arm 11 and the second connecting arm 12 of the elastic sheet 1, which are away from the contact portion 13, are fixedly arranged on the first surface b of the second structural member 3, and the contact portion 13 of the elastic sheet 1 is abutted against and contacted with the first surface a of the first structural member 2, so that the elastic sheet 1 is stably and elastically connected between the first structural member 2 and the second structural member 3.

In one embodiment, the first surface a of the first structural member 2 is disposed in a plane, the contact portion 13 of the spring plate 1 is in a strip structure extending linearly, and the thickness direction of the contact portion 13 is parallel to the first direction X, so that the surface of the contact portion 13 facing the first structural member 2 is matched with the first surface a of the first structural member 2, so that the surface of the contact portion 13 facing the first structural member 2 can be attached to the first surface a of the first structural member 2, thereby maximally increasing the contact area between the contact portion 13 and the first surface a of the first structural member 2, and thus under the same elastic force, the pressure of the contact portion 13 on the first surface a of the first structural member 2 can be reduced, and the risk of damage to the first surface a of the first structural member 2 caused by the elastic force applied to the first structural member 2 by the contact portion 13 is reduced. In other alternative embodiments, the contact portion 13 may be configured to conform to the first surface a of the first structural member 2 according to the shape of the first surface a of the first structural member 2. As will be understood by those skilled in the art, the contact portion 13 of the elastic sheet 1 is used to elastically connect to the first surface a of the first structural member 2, and at least a partial area of the contact portion 13 is kept in contact with the first surface a of the first structural member 2, so in other embodiments, the contact portion 13 may also adopt a strip-shaped structure extending in a curved shape or a bent shape, for example, the contact portion 13 adopts a strip-shaped structure extending in an arc shape, and at this time, a portion of the strip-shaped structure protruding toward the first structural member 2 contacts with the first surface a of the first structural member 2; the surface of the contact portion 13 of the spring plate 1 facing the first structural member 2 may also be in a non-contact structure with the first surface a of the first structural member 2, for example, when the first surface a of the first structural member 2 is an arc surface, the surface of the contact portion 13 facing the first structural member 2 may be in a flat arrangement, or when the first surface a of the first structural member 2 is a flat surface, the surface of the contact portion 13 facing the first structural member 2 may also be in an arc arrangement.

In one embodiment, the first connecting arm 11 and the second connecting arm 12 are each provided in a resilient arm structure, and the first connecting arm 11 and the second connecting arm 12 are symmetrically arranged with respect to a virtual plane k, which is a center line y passing through the contact portion 13 along the extending direction thereof and is parallel to the first direction X. So that the first connecting arm 11 and the second connecting arm 12 which are symmetrically arranged can generate symmetrical elastic force when being deformed, and the elastic sheet 1 has the effect of elastic connection along the first direction X more stably. In one embodiment, the extending direction of the contact portion 13 is perpendicular to a center line y of the contact portion 13 in the extending direction thereof, and both the extending direction of the contact portion 13 and the center line y of the contact portion 13 in the extending direction thereof are perpendicular to the first direction X.

It will be appreciated by those skilled in the art that the first connecting arm 11 and the second connecting arm 12 may be provided separately, and therefore, in other alternative embodiments, the first connecting arm 11 and the second connecting arm 12 may also have an asymmetrical structure. In the present embodiment, since the first connecting arm 11 and the second connecting arm 12 are both provided in a resilient arm structure and are symmetrically provided, the resilient arm structure will be described in detail below by taking the first connecting arm 11 as an example.

In one embodiment, one end of the first connecting arm 11 away from the contact portion 13 is a fixed end 14, one end of the first connecting arm 11 connected to the contact portion 13 is a connecting end 15, the first connecting arm 11 adopts a linear structure extending linearly, and an extending direction of the first connecting arm 11 from the connecting end 15 to the fixed end 14 is inclined relative to the first direction X, a plane where the first surface b of the second structural member 3 is located is a projection plane, a projection of the first connecting arm 11 on the projection plane gradually leaves away from a projection of the contact portion 13 from the connecting end 15 to the fixed end 14, that is, the first connecting arm 11 extends from the connecting end 15 to the fixed end 14 toward a direction away from the second connecting arm 12. Since the first connecting arm 11 and the second connecting arm 12 are symmetrically arranged relative to the virtual plane k, the elastic sheet 1 is in an isosceles trapezoid shape in fig. 4b, and the short side of the elastic sheet 1 is the contact portion 13. Or it can be understood that the first connecting arm 11 extends from the first end 131 of the contact portion 13 to the mounting plate 19, in particular, the first connecting arm 11 extends from the first end 131 of the contact portion 13 in the first direction X towards the direction close to the mounting plate 19 and in the direction away from the contact portion 13 in the extension direction of the contact portion 13.

When the first structural member 2 moves in the first direction X toward the direction approaching the second structural member 3, the spring plate 1 is pressed by the first structural member 2 in the first direction X to be deformed. Specifically, the contact portion 13 moves in the first direction X in a direction to approach the second structural member 3, and presses the first and second connecting arms 11 and 12, so that the first and second connecting arms 11 and 12 are compressed in the first direction X and undergo buckling deformation. In the process that the first connecting arm 11 and the second connecting arm 12 are compressed, the elastic force of the first connecting arm 11 and the second connecting arm 12 at the critical value of the buckling deformation is similar to the elastic force of the elastic sheet 1 generated in the whole buckling deformation process, that is, the relatively constant elastic force can be generated in the process that the first connecting arm 11 and the second connecting arm 12 are compressed to the maximum displacement distance from the time when the first connecting arm 11 and the second connecting arm are compressed to the time when the buckling deformation just occurs. Therefore, the damage and failure or fatigue damage of the first structural part 2 or the second structural part 3 caused by overlarge elasticity of the elastic sheet 1 are avoided.

Buckling refers to the process of losing load bearing capacity when a structural member has not yet reached yield. When the load of the structural member reaches a certain critical value, the structural member configuration suddenly jumps to another random equilibrium state, wherein the random equilibrium state means that the equilibrium state of the structural member does not change along with the change of time and position under the action of the external environment, the state before the critical point is called front buckling, and the state after the critical point is called rear buckling. As shown in fig. 5 and fig. 6, as can be seen from the elastic displacement schematic diagram of the elastic sheet 1 in the ideal state of being extruded and deformed, before the displacement of the elastic sheet 1 reaches the critical point e, along with the increase of the displacement of the elastic sheet 1, the elastic force of the elastic sheet 1 increases linearly, when the displacement of the elastic sheet 1 reaches the critical point, the elastic arm structure of the elastic sheet 1 generates buckling deformation, the elastic force of the elastic sheet 1 reaches the maximum, at this time, along with the further increase of the displacement of the elastic sheet 1, the elastic force of the elastic sheet 1 can be kept at the maximum elastic force value, and basically, no change occurs.

As shown in fig. 5 and fig. 7, the elastic displacement schematic diagram of the elastic sheet 1 in the process of being squeezed to deform according to the embodiment of the present application, before the displacement amount of the elastic sheet 1 compressed reaches the critical point e, along with the increase of the displacement amount c of the elastic sheet 1 compressed, the elastic force of the elastic sheet 1 is approximately linearly increased, when the displacement amount of the elastic sheet 1 compressed reaches the displacement amount d at the critical point e, the elastic force generated by the elastic sheet 1 reaches the elastic force value F at the critical point e, at this time, the elastic arm structure of the elastic sheet 1 generates buckling deformation, when the displacement amount of the elastic sheet 1 compressed further increases, the elastic force of the elastic sheet 1 can be kept in a relatively constant state of slow increase.

In one embodiment, the extending direction of the elastic arm structure from the connecting end 15 to the fixed end 14 may be inclined at an angle α of 15 ° to 45 °, e.g., 25.5 °,30 °, etc., with respect to the first direction. At this time, the effect that the elastic force generated by the elastic sheet 1 is kept relatively constant when reaching the critical point is the best. In one embodiment, the angle between the first connecting arm 11 and the mounting plate 19, and the angle between the second connecting arm 12 and the mounting plate 19, may be set to be 45 ° to 75 °, for example, 60 °,64.5 °,65 °,66 °, etc.

In one embodiment, the elastic force of the spring 1 reaching the critical point is set to be less than the maximum force that the first structural member 2 and the second structural member 3 can bear. The elastic force value F of the elastic sheet 1 reaching the critical point is related to the wall thickness, the width, the height and the material of the first connecting arm 11 and the second connecting arm 12, and the elastic force value of the elastic sheet 1 reaching the critical point is adjusted by adjusting the wall thickness of the first connecting arm 11 and the second connecting arm 12, the width in the first direction X, the height in the first direction X and the material of the elastic sheet. When the displacement change of the compressed elastic sheet 1 is too large, the elastic sheet 1 can be prevented from exerting too large elastic force on the first structural member 2 and the second structural member 3, and the elastic sheet 1 can be prevented from damaging and failing or generating fatigue damage on the first structural member 2 and the second structural member 3. It can be understood by those skilled in the art that the elastic force value of the elastic sheet 1 reaching the critical point can be set according to the specific usage scenario requirements, for example, in the scenario where the elastic sheet 1 is used to elastically connect the first structural member 2 and the second structural member 3, the elastic force value of the elastic sheet 1 at the critical point is ensured to be greater than the required elastic force value, and the minimum elastic force required between the elastic sheet 1 and the first structural member 2 can also be determined.

As shown in fig. 3 and 5, in an embodiment, the elastic sheet 1 is elastically connected between the first structural member 2 and the second structural member 3, and in a normal working state (or as understood, when the elastic sheet 1 is in a working position), the first surface a of the first structural member 2 is located at a position P1 in fig. 5, at this time, a displacement amount of the elastic sheet 1 being compressed is c1 and is greater than a displacement amount d of the elastic sheet 1 being at a critical point e, so that the elastic sheet 1 undergoes buckling deformation and generates an elastic force similar to an elastic force value F at the critical point e, so that a compressed displacement amount of the elastic sheet 1 maintains a relatively constant elastic force within a range of the displacement amount d exceeding the critical point e. When the first structural member 2 and the second structural member 3 are impacted or subjected to external acting force, the first structural member 2 moves towards or away from the second structural member 3 relative to the second structural member 3, the compressed displacement of the elastic sheet 1 changes along with the impact, and when the compressed displacement of the elastic sheet 1 is larger than the compressed displacement c1 of the working state of the elastic sheet 1, the elastic force of the elastic sheet 1 can be always kept at an elastic force value F approximate to a critical point e, so that the first structural member 2 and the second structural member 3 are subjected to stable and uniform elastic force, and the first structural member 2 and the second structural member 3 are not easy to damage or fatigue damage, for example, when the first surface a of the first structural member 2 moves to the position P2 in fig. 5, the compressed displacement c2 of the elastic sheet 1 is further increased. When the displacement d of the spring plate 1 compressed is greater than or equal to the displacement d of the critical point e and is smaller than the displacement c1 compressed under the normal working state, the elastic force of the spring plate 1 can still keep the elastic force value F similar to the critical point e all the time, so that the first structural member 2 and the second structural member 3 are subjected to stable and uniform elastic force, and the first structural member 2 and the second structural member 3 are not easy to damage or lose efficacy or generate fatigue damage. At the position P3 in fig. 5, the compressed displacement of the spring plate 1 is d, and the elastic force of the spring plate 1 is F.

As shown in fig. 8, in one embodiment, shell fragment 1 can be applied to electronic equipment, and electronic equipment can be cell-phone, panel computer, notebook computer, intelligent audio amplifier, intelligent house, intelligent bracelet, intelligent wrist-watch, unmanned aerial vehicle, wireless wearing etc.. The electronic device of the present embodiment is described by taking a mobile phone as an example. The first structural member 2 may be a display module of an electronic device, and the second structural member 3 may be a middle chassis of the electronic device. Thereby make electronic equipment's display module can form stable elastic connection through shell fragment 1 and center bottom plate, and receive the impact at electronic equipment, if drop, when extrusion, when display module moves towards or deviates from the center, shell fragment 1 can produce the relatively stable elasticity that is in the safety range, avoid display module to bear too big elasticity that comes from shell fragment 1 on the one hand, cause display module's damage inefficacy, for example, lead to display module to produce spot class problem, on the other hand avoid display module to bear the too big elasticity that comes from shell fragment 1 of range of variation, cause display module's fatigue damage, the resistant falling of electronic equipment's display module has been promoted, the durability, and electronic equipment's durability has been improved. In other alternative embodiments, the elastic sheet 1 may also be applied to other scenes, for example, the elastic sheet 1 may also be disposed in a sliding door, a rotating shaft mechanism of a folding electronic device, or other scenes that need elastic connection.

In one embodiment, the spring plate 1 may be made of phosphor bronze, tin bronze, 65Mn, 55Si2Mn, 60Si2MnA, 55 simmnvb, 55SiMnMoV, 60CrMn, 60CrMnB, 302, 316, or other brands of flat steel strip.

In an embodiment, the elastic sheet 1 further includes a mounting plate 19, one end of the first connecting arm 11 and the end of the second connecting arm 12 departing from the contact portion 13 are fixedly arranged on the mounting plate 19, and the elastic sheet 1 is fixedly arranged on the first surface b of the second structural member 3 through the mounting plate 19, so that the contact area between the elastic sheet 1 and the second structural member 3 is increased, the mounting firmness and reliability between the elastic sheet 1 and the second structural member 3 are improved, and under the same elastic action, the pressure of the elastic sheet 1 on the second structural member 3 is reduced, and the elastic sheet 1 is prevented from forming a concentrated elastic force on the second structural member 3, so that the second structural member 3 is damaged or generates structural fatigue.

In one embodiment, the ends of the first connecting arm 11 and the second connecting arm 12 facing away from the contact portion 13 may be fixedly disposed on the mounting plate 19 by welding, bolting, snapping, or the like.

In one embodiment, the mounting plate 19 of the spring 1 may be fixedly arranged on the second structural member 3 by welding, bolting, bonding, or the like.

Referring to fig. 9a and 9b, fig. 9a and 9b are schematic structural views of a spring plate provided with an arc-shaped arm according to an embodiment of the present application. As shown in fig. 9a and 9b, compared with the elastic sheet 1 shown in fig. 3-4 b, the elastic sheet 1 provided in this embodiment has substantially the same structure, except that: the fixed ends 14 of the first connecting arm 11 and the second connecting arm 12 are bent downwards to form an arc-shaped arm 16. In the present embodiment, the first connecting arm 11 and the second connecting arm 12 have the same configuration and are symmetrically disposed, and therefore, the configuration of the arc-shaped arm 16 will be described in detail below by taking the first connecting arm 11 as an example.

The end of the arc-shaped arm 16 of the first connecting arm 11 away from the fixed end 14 is used for being fixedly connected with the first surface b of the second structural member 3, so that the fixed end 14 of the first connecting arm 11 is fixedly connected with the first surface b of the second structural member 3 through the arc-shaped arm 16.

The arc-shaped arm 16 extends downward from the fixed end 14 of the first connecting arm 11 and bends toward the inner side, where the inner side is the side of the first connecting arm 11 facing the second connecting arm 12, so that the projection of the end of the arc-shaped arm 16 away from the fixed end 14 on the projection plane is located in the projection of the first connecting arm 11 on the projection plane. Thereby at the in-process of 11 bucking deformations of first link arm, the elasticity of concentrating on the stiff end 14 of first link arm 11 can act on the first surface b of second structure 3 through 16 dispersion of arc arm, make first link arm 11 in deformation in-process, the condition of stress concentration is difficult to appear in the stiff end 14 of first link arm 11, and make first link arm 11 be in elasticity work interval all the time, thereby avoid the stiff end 14 of first link arm 11 the phenomenon of surging to appear in deformation in-process, improve the durability of first link arm 11, thereby promote the holistic durability and the reliability of shell fragment 1. Further, the elastic sheet 1 can be applied to application scenes with large variation of the compressed displacement amount.

Referring to fig. 10a and 10b, fig. 10a and 10b are schematic structural views of a spring plate provided with a stepped support arm according to an embodiment of the present application. As shown in fig. 10a and 10b, compared with the elastic sheet 1 shown in fig. 3-4 b, the elastic sheet 1 provided in this embodiment has substantially the same structure, except that: the fixed ends 14 of the first connecting arm 11 and the second connecting arm 12 are bent downward and extend outward to form a stepped supporting arm 17. Wherein, the outside of first linking arm 11 is the one side that first linking arm 11 deviates from second linking arm 12 for the projection of echelonment support arm 17 on first linking arm 11 on the plane of projection is located outside the projection of first linking arm 11 on the plane of projection, and the outside of second linking arm 12 is the one side that second linking arm 12 deviates from first linking arm 11, makes the projection of echelonment support arm 17 on the plane of projection on second linking arm 12 be located outside the projection of second linking arm 12 on the plane of projection. In the present embodiment, the first connecting arm 11 and the second connecting arm 12 have the same configuration and are symmetrically disposed, and therefore, the configuration of the stepped supporting arm 17 will be described in detail below by taking the first connecting arm 11 as an example.

The stepped supporting arm 17 of the first connecting arm 11 includes an arc-shaped arm 171 and a fixing arm 172 sequentially connected along an extending direction of the stepped supporting arm 17, the arc-shaped arm 171 extends downward in a first direction X from the fixed end 14 of the first connecting arm 11 and extends in a direction perpendicular to the first direction X toward a direction away from the first connecting arm 11, the fixing arm 172 is disposed in an L shape along the extending direction, one end of the fixing arm 172 is connected to an end of the arc-shaped arm 171 away from the fixed end 14, the other end of the fixing arm 172 extends in a direction perpendicular to the first direction X toward the direction away from the arc-shaped arm 171 and extends in a direction parallel to the first direction X toward the first surface b of the second structural member 3 to form an L-shaped extending track, and the other end of the fixing arm 172 is configured to be fixedly connected to the first surface b of the second structural member 3, so that the fixing arm 172 of the first connecting arm 11 is fixedly connected to the first surface b of the second structural member 3 through the supporting arm 17. Thereby at the in-process that first link arm 11 bucking warp, the elasticity of the stiff end 14 of concentrating on first link arm 11 can be through echelonment support arm 17 dispersion action in the first surface b of second structure 3, make first link arm 11 at the deformation in-process, the condition of stress concentration is difficult to appear in the stiff end 14 of first link arm 11, and make first link arm 11 be in the elasticity work interval all the time, thereby avoid the stiff end 14 of first link arm 11 to appear surrender phenomenon at the deformation in-process, improve the durability of first link arm 11, thereby promote the holistic durability and the reliability of shell fragment 1. Further, the elastic sheet 1 can be applied to application scenes with large variation of the compressed displacement amount.

Referring to fig. 11, fig. 11 is a schematic structural view of a spring plate provided with a U-shaped arm according to an embodiment of the present application. As shown in fig. 11, compared with the elastic sheet 1 shown in fig. 3-4 b, the elastic sheet 1 provided in this embodiment has substantially the same structure, except that: the fixed ends 14 of the first connecting arm 11 and the second connecting arm 12 are bent downwards and extend towards the outer side to form a U-shaped arm 18, wherein the outer side of the first connecting arm 11 is the side of the first connecting arm 11 departing from the second connecting arm 12, so that the projection of the U-shaped arm 18 on the projection surface is located outside the projection of the first connecting arm 11 on the projection surface. The outer side of the second connecting arm 12 is the side of the second connecting arm 12 away from the first connecting arm 11, so that the projection of the U-shaped arm 18 on the projection plane is located outside the projection of the second connecting arm 12 on the projection plane. In the present embodiment, the first connecting arm 11 and the second connecting arm 12 have the same structure and are symmetrically disposed, and therefore, the structure of the step U-shaped arm 18 will be described in detail below by taking the first connecting arm 11 as an example.

The U-shaped arm 18 of the first connecting arm 11 comprises an upper arm 181, a bending arm 182 and a lower arm 183 which are sequentially connected along the extending direction of the U-shaped arm 18, the upper arm 181 is arranged opposite to the lower arm 183, one end, away from the bending arm 182, of the upper arm 181 is connected with the fixed end 14 of the first connecting arm 11, one end, away from the bending arm 182, of the lower arm 183 is a free end, the extending directions of the upper arm 181 and the lower arm 183 are perpendicular to the first direction X, the extending direction of the bending arm 182 is parallel to the first direction X, and the surface, away from the upper arm 181, of the lower arm 183 is used for being fixedly connected with the first surface b of the second structural part 3, so that the fixed end 14 of the first connecting arm 11 is fixedly connected with the first surface b of the second structural part 3 through the U-shaped arm 18. Thereby at the in-process of 11 bucking deformations of first link arm, the elasticity of concentrating on the stiff end 14 of first link arm 11 can act on the first surface b of second structure 3 through the U-shaped arm dispersion, make first link arm 11 in deformation in-process, the condition of stress concentration is difficult to appear in the stiff end 14 of first link arm 11, and make first link arm 11 be in elasticity work interval all the time, thereby avoid the stiff end 14 of first link arm 11 the phenomenon of surging to appear in deformation in-process, improve the durability of first link arm 11, thereby promote the holistic durability and the reliability of shell fragment 1. Further, the shrapnel 1 can be suitable for application scenes with large variation of compressed displacement.

In one embodiment, the ends of the first connecting arm 11 and the second connecting arm 12 departing from the contact portion 13 are fixed on the mounting plate 19 through the U-shaped arm 18 and the arc-shaped arm 16 or the stepped supporting arm 17, the elastic sheet 1 is then fixed on the first surface b of the second structural member 3 through the mounting plate 19, and the contact area between the elastic sheet 1 and the second structural member 3 is further increased, so that the pressure of the elastic sheet 1 on the second structural member 3 is reduced under the same elastic force action, and the elastic sheet 1 is prevented from forming stress concentration on the second structural member 3, and the second structural member 3 is damaged or suffers from structural fatigue.

Referring to fig. 12a and 12b, fig. 12a and 12b are schematic structural views of a spring plate according to another embodiment of the present application. As shown in fig. 12a and 12b, in another embodiment, the first connecting arm 11 is provided as a resilient arm structure, and the second connecting arm 12 is provided with a guide 121; in other embodiments, the fixed end 14 of the first connecting arm 11 shown in fig. 12a and 12b is fixedly disposed on the mounting plate 19 through the U-shaped arm 18, and in other embodiments, the first connecting arm 11 may also adopt the elastic arm structure in any one of the above embodiments, which is not described herein again. Therefore, the second connecting arm 12 will be described in detail below as an example.

In one embodiment, the spring plate 1 further includes a guide rail 20, one end of the guide rail 20 is fixed to the first surface b of the second structural member 3, the guide rail 20 is provided with a guided portion 21, and the guide portion 121 of the second connecting arm 12 is slidably connected to the guided portion 21 of the guide rail 20, so that when the first structural member 2 moves in the first direction X toward the second structural member 3, under the pressure applied by the first structural member 2, the contact portion 13 moves in the first direction X toward the second structural member 3, and presses the first connecting arm 11 to generate buckling deformation, and drives the second connecting arm 12 to slide relative to the guide rail 20 in the first direction X toward the second structural member 3. The sliding engagement of the guide rail 20 and the second connecting arm 12 can limit the relative movement of the first structural member 2 relative to the second structural member 3 in a direction perpendicular to the first direction X, such that the first structural member 2 can be stably moved in the first direction X towards or away from the second structural member 3. Meanwhile, the guide rail 20 and the second connecting arm 12 of the elastic sheet 1 can be arranged along the first direction X, so that the guide rail 20 and the second connecting arm 12 of the elastic sheet 1 have a narrow size in the direction perpendicular to the first direction X, and the elastic sheet is suitable for application scenes in which the space on one side of the elastic sheet 1 is limited, for example, application scenes in which the elastic sheet 1 is arranged at the edges of the first structural member 2 and the second structural member 3.

In one embodiment, the guided portion 21 is provided as a sliding groove, and the guide portion 121 is provided as a slider and is located at an end of the second connecting arm 12 facing away from the contact portion 13. In other alternative embodiments, the guided portion 21 and the guiding portion 121 may be in other forms of sliding fit, for example, the guided portion 21 may be a tooth row arranged along the first direction X, and the guiding portion 121 is configured as a gear rotatably disposed on the second connecting arm 12 and matched with the tooth row.

In an embodiment, the elastic sheet 1 further includes a mounting plate 19, one end of the guide rail 20 departing from the contact portion 13 and one end of the first connecting arm 11 departing from the contact portion 13 are fixedly arranged on the mounting plate 19, and the elastic sheet 1 is fixedly arranged on the first surface b of the second structural member 3 through the mounting plate 19, so that the contact area between the elastic sheet 1 and the second structural member 3 is increased, thereby under the same elastic force effect, the pressure of the elastic sheet 1 on the second structural member 3 is reduced, the elastic sheet 1 is prevented from forming stress concentration on the second structural member 3, and the second structural member 3 is damaged or generates structural fatigue.

The embodiment of the application provides an electronic device, including the display module as first structure piece 2 and the center as second structure piece 3, be provided with two shell fragments 1 between the bottom plate of display module and center, wherein shell fragment 1 adopts shell fragment 1 in any one above-mentioned embodiment.

In one embodiment, the display module is fixed to the bottom plate of the middle frame through the adhesive member, and the adhesive member may be an adhesive member having a certain elasticity, such as foam adhesive, gum adhesive, or the like, so that the display module may move toward or away from the bottom plate of the middle frame with respect to the bottom plate of the middle frame.

In one embodiment, the two elastic pieces 1 are elastically connected between the display module and the bottom plate of the middle frame, and the elastic pieces 1 are made of a conductive material, such as a 302 flat steel band, so that the display module is electrically connected with the bottom plate of the middle frame through at least one elastic piece 1, thereby achieving the grounding of the display module. When the electronic device is in a normal use state, the two elastic sheets 1 are in a buckling deformation state compressed by the display module and the bottom plate of the middle frame, so that the elastic sheets 1 generate relatively stable elastic force, and certain elastic force is kept between the elastic sheets 1 and the display module and between the elastic sheets 1 and the bottom plate of the middle frame. So that when the electronic device is subjected to an external impact, the display module moves toward or away from the middle frame with respect to the bottom plate of the middle frame. The displacement of the shrapnel 1 which is compressed can be increased or reduced along with the compression, so that the shrapnel 1 can be stably and elastically connected between the display module and the bottom plate of the middle frame, and the contact quality between the shrapnel 1 and the bottom plate of the middle frame and the display module is always kept. When electronic equipment receives the great impact of outside, the distance that the display module removed towards the center changes when great, make the displacement volume change that shell fragment 1 compressed is great, shell fragment 1 still can keep invariable elasticity relatively this moment, avoid display module and center to bear too big elasticity that comes from shell fragment 1 on the one hand, cause the damage inefficacy of center and display module, for example, lead to display module to produce spot class problem, on the other hand, avoid display module to bear the too big elasticity that comes from shell fragment 1 of variation range, cause display module's fatigue damage, the display module's that has promoted electronic equipment is resistant to falling, the durability, and electronic equipment's durability has been improved. In other embodiments, three or more spring pieces 1 may be disposed between the display module and the middle frame.

It will be apparent to those skilled in the art that various changes and modifications can be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations.

Claims (18)

1. An elastic sheet, configured to be disposed between a first structural member and a second structural member that are disposed opposite to each other, wherein a first surface of the first structural member is disposed opposite to a first surface of the second structural member, the first structural member is movable in a first direction relative to the second structural member toward or away from the second structural member, and the first direction is perpendicular to the first surface of the second structural member, the elastic sheet comprising:

a contact portion having first and second ends disposed opposite one another and adapted to contact the first surface of the first structural member;

a first connecting arm formed to extend downward from the first end of the contact portion;

a second connecting arm formed extending downward from the second end of the contact portion;

wherein, first linking arm with at least one linking arm in the second linking arm sets up to the elastic arm structure, the elastic arm structure is kept away from the one end of contact site is the stiff end, the elastic arm structural connection the one end of contact site is the link, the stiff end be used for with the second structure first surface fixed connection, just the elastic arm structure is followed the link extremely the extending direction of stiff end for the first direction is the slope setting, makes first structure is in the first direction towards being close to during the direction of second structure removes the pressure effect that first structure was applyed is down, the contact site is in the first direction towards being close to the direction of second structure removes, and extrudees the elastic arm structure produces the buckling deformation.

2. The shrapnel of claim 1, wherein the elastic arm structure adopts a strip structure extending in a straight line.

3. The elastic sheet according to claim 1, wherein the contact portion has a strip structure extending linearly, and a thickness direction of the contact portion is parallel to the first direction.

4. An elastic sheet according to claim 1, wherein the extending direction of said elastic arm structure from said connecting end to said fixed end is inclined at an angle of 15 ° to 45 ° with respect to said first direction.

5. The spring plate according to claim 1, wherein a plane where the first surface of the second structural member is located is a projection plane, and a projection of the elastic arm structure on the projection plane is gradually away from a projection of the contact portion on the projection plane from the connecting end to the fixed end.

6. The spring as claimed in claim 1, wherein the fixed end of the elastic arm structure is bent downward to form an arc-shaped arm, and an end of the arc-shaped arm away from the fixed end is configured to be fixedly connected to the first surface of the second structural member, so that the fixed end of the elastic arm structure is fixedly connected to the first surface of the second structural member through the arc-shaped arm.

7. The spring plate of claim 6, wherein the arc-shaped arm extends downward and bends toward the inside from the fixed end of the elastic arm structure, so that a projection of an end of the arc-shaped arm away from the fixed end on a projection plane is located in a projection of the elastic arm structure on the projection plane, wherein the projection plane is a plane on which the first surface of the second structural member is located.

8. The spring plate according to claim 1, wherein the fixed end of the elastic arm structure is bent downward and outward to form a U-shaped arm, so that a projection of the U-shaped arm on a projection plane is located outside a projection of the elastic arm structure on the projection plane, and the projection plane is a plane where the first surface of the second structural member is located;

the U-shaped arm comprises an upper arm, a bending arm and a lower arm which are sequentially connected along the extending direction of the U-shaped arm, the upper arm and the lower arm are oppositely arranged, one end, far away from the bending arm, of the upper arm is connected with the fixed end of the elastic arm structure, one end, far away from the bending arm, of the lower arm is a free end, the surface, far away from the upper arm, of the lower arm is used for being fixedly connected with the first surface of the second structural part, and therefore the fixed end of the elastic arm structure is fixedly connected with the first surface of the second structural part through the U-shaped arm.

9. The shrapnel of claim 8, wherein the upper arm and the lower arm of the U-shaped arm both extend in a direction perpendicular to the first direction, and the bent arm extends in a direction parallel to the first direction.

10. The spring as claimed in claim 1, wherein the fixed end of the elastic arm structure is bent downward and outward to form a step-shaped supporting arm, such that a projection of the step-shaped supporting arm on a projection plane is located outside a projection of the elastic arm structure on the projection plane, and the projection plane is a plane where the first surface of the second structural member is located;

the step-shaped support arm comprises an arc-shaped arm and a fixed arm which are sequentially connected along the extending direction of the step-shaped support arm, the arc-shaped arm extends downwards from the fixed end of the elastic arm structure in the first direction, extends in the direction which is perpendicular to the first direction and deviates from the elastic arm structure, the fixed arm is L-shaped along the extending direction, extends in the direction which is perpendicular to the first direction from one end of the arc-shaped arm, which is far away from the fixed end, and extends in the direction which is far away from the arc-shaped arm, and then extends towards the first surface of the second structural member in the direction which is parallel to the first direction so as to form an L-shaped extending track, and one end of the fixed arm, which is far away from the arc-shaped arm, is used for being fixedly connected with the first surface of the second structural member, so that the fixed end of the elastic arm structure is fixedly connected with the first surface of the second structural member through the step-shaped support arm.

11. The spring plate according to claim 1, further comprising a mounting plate disposed opposite to the contact portion, wherein ends of the first connecting arm and the second connecting arm away from the contact portion are mounted on the mounting plate, and the mounting plate is configured to be fixedly connected to the first surface of the second structural member, so that an end of the spring plate away from the contact portion is fixedly connected to the first surface of the second structural member through the mounting plate.

12. An elastic sheet according to any one of claims 1 to 11, wherein said first connecting arm and said second connecting arm are both provided in said elastic arm structure, and said first connecting arm and said second connecting arm are symmetrically provided with respect to a virtual plane passing through a center line of said contact portion in an extending direction thereof and being parallel to said first direction.

13. The shrapnel of claim 12, wherein when the shrapnel further comprises a mounting plate, the fixed end of the first connecting arm and the fixed end of the second connecting arm are both fixedly mounted to the mounting plate.

14. An elastic sheet according to any one of claims 1 to 11, wherein said first connecting arm is provided as said resilient arm structure and said second connecting arm is provided with a guide portion;

the elastic sheet further comprises a guide rail, the guide rail is used for being fixed on the first surface of the second structural member, the guide rail is provided with a guided portion, the guided portion of the second connecting arm is in sliding connection with the guided portion of the guide rail, so that when the first structural member moves towards the direction close to the second structural member in the first direction, under the action of pressure applied by the first structural member, the contact portion moves towards the direction close to the second structural member in the first direction and extrudes the first connecting arm to generate buckling deformation, and the second connecting arm is driven to slide towards the second structural member in the first direction relative to the guide rail.

15. A spring plate according to claim 14, wherein the guided portion is provided as a sliding groove and the guide portion is provided as a slider at an end of the second connecting arm facing away from the contact portion.

16. The shrapnel of claim 14, wherein when the shrapnel further comprises a mounting plate, the fixed end of the first connecting arm is fixedly mounted to the mounting plate, and the guide rail is mounted to the mounting plate such that the guide rail is fixedly connected to the first surface of the second structural member through the mounting plate.

17. An electronic device comprising the dome according to any one of claims 1 to 16.

18. The electronic device according to claim 17, further comprising a display module as the first structural member and a middle frame as the second structural member, wherein at least two elastic pieces are disposed between the display module and the middle frame, and the contact portion of each elastic piece abuts against a surface of the display module facing the middle frame.

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