CN219997560U

CN219997560U - Touch control panel and electronic equipment

Info

Publication number: CN219997560U
Application number: CN202321332841.3U
Authority: CN
Inventors: 洪宇晞; 黄维勇
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2023-05-29
Filing date: 2023-05-29
Publication date: 2023-11-10
Anticipated expiration: 2033-05-29

Abstract

The application provides a touch control board and electronic equipment, wherein the touch control board comprises a touch control circuit board and a bottom plate which are stacked in a first direction, a trigger piece is arranged in the central area of the touch control circuit board, the touch control board further comprises a plurality of elastic pieces, and the elastic pieces are arranged between the touch control circuit board and the bottom plate and are distributed around the periphery of the trigger piece on a plane perpendicular to the first direction. Each elastic piece comprises a supporting part and at least one elastic arm, the supporting part is fixedly connected to the touch control circuit board, each elastic arm is provided with a first end connected to the supporting part and a second end connected to the bottom plate, and each elastic arm extends along a direction inclined relative to the first direction. Wherein, each elastic arm can produce elastic deformation and produce resilience force under the effect of pressing force. The touch pad provided by the application has uniform hand feeling pressed at each position, is not easy to generate appearance section difference in electronic equipment, and can give consideration to better hand feeling and thinner thickness.

Description

Touch control panel and electronic equipment

Technical Field

The present application relates to the field of touch technologies, and in particular, to a touch pad and an electronic device.

Background

The touch pad always plays a role in man-machine interaction and productivity in electronic devices such as notebook computers, along with the miniaturization of the electronic devices and the diversification of functions, the area of the touch pad is larger and larger, and how to adapt to the trend of the miniaturization of the electronic devices while ensuring the pressing hand feeling of the touch pad, thus testing the capability of designers.

The touch control board generally comprises a touch control circuit board for realizing functions such as touch position recognition and the like and a bottom plate for supporting the touch control circuit board, wherein trigger pieces such as switch keys are arranged on the touch control circuit board, a certain gap is reserved between the bottom plate and the touch control circuit board, when a user presses the touch control circuit board downwards (namely towards the bottom plate), the touch control circuit board moves towards the bottom plate, the gap between the touch control circuit board and the bottom plate is reduced, the trigger pieces are extruded by the bottom plate, so that the trigger pieces are triggered and generate trigger signals, and the click confirmation operation is completed. Meanwhile, in order to feed back the information of successful operation to the user, the trigger piece generates a rebound force in the process of being squeezed, so that the user can feel that the trigger piece is successfully triggered.

With the trend of increasing area of touch panels, more and more touch panels support global domain pressing, i.e. pressing various positions (including the center, edges and corners) of the touch circuit board can trigger the trigger piece. However, the trigger member is usually installed at the center of the touch circuit board, so that the touch feeling (which can be understood as the feedback force of the trigger device) of pressing the touch circuit board is inconsistent when pressing different positions of the touch circuit board, and the experience of clicking confirmation is greatly reduced. For example, when pressing the central region of touch-control circuit board, pressing force directly acts on the trigger piece through the touch-control circuit board, and is comparatively laborsaving when pressing, and the dynamics of trigger piece feedback is stronger. When pressing the edge, the corner position of touch-control circuit board, press the arm of force longer between position and the touch-control circuit board central region, press the unable in time from pressing the position transmission to central region of power, comparatively laborious when leading to pressing, and the dynamics of trigger piece feedback is less.

In addition, because the touch circuit board is limited by the structure and the material, the rigidity is poor, and when the edge and the corner position are pressed, deformation is easy to generate between the pressing position and the central area, and the touch circuit board is bent towards the bottom plate. In this case, when the gap between the touch circuit board and the chassis is small, there may be a case where the pressing force cannot be transmitted to the trigger, and a pressing failure occurs. Although this phenomenon can be improved by increasing the gap between the touch circuit board and the bottom plate, it may result in an increase in the thickness of the touch panel, and when the edge, corner, etc. of the touch circuit board are pressed, the pressing point excessively sags, resulting in an appearance level difference between the touch panel and other parts of the electronic device. In some products, some auxiliary supporting structures can be arranged between the touch circuit board and the bottom plate to reduce deformation of the touch circuit board and optimize transmission effect of pressing force, but the structure is generally complex, the thickness of the touch circuit board is further increased, the electronic equipment is not easy to lighten and thin, and the effect of improving the uniformity of pressing hand feeling of the global domain is not obvious.

Therefore, in the prior art, the pressing hand feeling of the touch pad pressed by the global domain is not uniform at each position, the appearance section difference is easy to generate in the electronic equipment, and the better pressing hand feeling and the thinner thickness cannot be considered.

Disclosure of Invention

The embodiment of the utility model provides a touch pad and electronic equipment, which solve the problems that in the prior art, the pressing hand feeling of the touch pad pressed by a global domain is uneven at each position, appearance section difference is easy to generate in the electronic equipment, and better pressing hand feeling and thinner thickness cannot be achieved.

The embodiment of the utility model provides a touch control board, which comprises a touch control circuit board and a bottom plate which are stacked in a first direction, wherein a trigger piece is arranged in the central area of the touch control circuit board, the touch control board also comprises a plurality of elastic pieces, and the elastic pieces are arranged between the touch control circuit board and the bottom plate in the first direction and are distributed around the periphery of the trigger piece on a plane vertical to the first direction.

Each elastic piece in the plurality of elastic pieces comprises a supporting part and at least one elastic arm, the supporting part is fixedly connected to the touch control circuit board, each elastic arm in the at least one elastic arm is provided with a first end connected with the supporting part and a second end connected with the bottom plate, and each elastic arm extends along a direction inclined relative to the first direction. Wherein, each elastic arm can produce elastic deformation and produce resilience force under the effect of pressing force.

According to the touch control board provided by the utility model, the plurality of elastic pieces are arranged between the touch control circuit board and the bottom plate, on one hand, the elastic pieces can provide supporting force for the touch control circuit board, on the other hand, the elastic pieces can elastically deform, so that the touch control circuit board and the bottom plate can move relatively, a user can finish operations such as click confirmation and the like by pressing the touch control circuit board towards the direction of the bottom plate, and the touch control circuit board can return to the initial position under the resilience force of the elastic pieces after the pressing is finished. The elastic piece comprises a supporting part and at least one elastic arm, wherein the elastic arm is a part which generates elastic deformation and resilience force under the action of pressing force, and the supporting part is arranged at the first end of the elastic arm, namely, is close to one end of the touch control circuit board in the first direction and is fixedly connected with the touch control circuit board so as to support the touch control circuit board.

Each elastic arm extends in a direction inclined relative to the first direction, and it is understood that an angle is formed between the extending direction of the elastic arm from the first end to the second end and the first direction, and it is also understood that a tangential plane (where a tangential plane of a plane is the plane itself) at each position of the plane where each elastic arm is located is inclined relative to the first direction. By adopting the structure, under the conditions that the whole thickness of the touch control board is thinner and the gap between the touch control circuit board and the bottom plate is smaller, the enough space can be ensured to install the elastic piece, and when the touch control circuit board is pressed, the larger the displacement of the touch control circuit board is, the larger the inclined angle of the elastic arm relative to the first direction is, the smaller the space occupied by the elastic arm in the first direction is, so that the touch control board can be designed with smaller thickness, and the lightening and thinning of electronic equipment are facilitated.

Further, the plurality of elastic members are distributed around the periphery of the triggering member, and the triggering member is located in the central area of the touch circuit board, that is, the plurality of elastic members are distributed around the triggering member in the peripheral area of the touch circuit board. By adopting the structure, the elastic piece supports the peripheral area of the touch control circuit board, the pressing force can be uniformly transmitted to each position of the touch control circuit board under the supporting action of the elastic piece, the feedback force of the triggering piece is also relatively consistent when the position is pressed, the edge and corner position of the touch control circuit board are pressed to smoothly trigger the triggering piece in the central area, and the pressing hand feeling is relatively uniform. And the supporting part thickens the peripheral area of the touch circuit board, the touch circuit board is not easy to bend and deform when being pressed, the whole touch circuit board can move towards the bottom plate, the problems that the pressing force caused by bending the touch circuit board when the edge and the corner position of the touch circuit board are pressed cannot be transmitted to the central area, the pressing position excessively sags and the like are avoided, and meanwhile, the appearance section difference of the touch circuit board and the electronic equipment is reduced.

Therefore, the touch pad provided by the embodiment of the application has uniform hand feeling pressed at each position, is not easy to generate appearance section difference in electronic equipment, and can give consideration to better hand feeling and thinner thickness.

In some embodiments, the respective spring arms in each spring extend from the first end to the second end in a direction away from the support portion in a plane perpendicular to the first direction. By such a design, the structure of the elastic arm itself can be prevented from being stacked in the first direction, and less space can be occupied.

In some embodiments, in each elastic member, a first end of each elastic arm is connected to an outer edge of the supporting portion facing the trigger member, and, on a plane perpendicular to the first direction, each elastic arm is entirely located between the supporting portion and the trigger member.

By adopting the scheme, the supporting part is arranged in the area, close to the periphery, of the touch circuit board in a stacked manner in the first direction, and the elastic piece can better play a supporting role when pressing the edge, the corner and other positions of the touch circuit board, so that the pressing handfeel uniformity is improved. In some embodiments, the supporting portions of the plurality of elastic members extend along a plane perpendicular to the first direction and are attached to the peripheral area of the touch circuit board, so as to enhance the supporting effect of the supporting portions on the touch circuit board.

In some embodiments, each support is provided in a sheet-like configuration and each resilient arm is provided in a bar-like configuration.

In some possible embodiments, each elastic arm is integrally located on an inclined plane inclined relative to the first direction, so as to further reduce the space occupied by the elastic member.

In some embodiments, each spring arm is integrally configured to: linear, arcuate, curvilinear or folded strip-like structures. Alternatively, each resilient arm is arranged to: at least two of the linear bar-shaped structure, the arc-shaped bar-shaped structure, the curved bar-shaped structure and the broken line-shaped bar-shaped structure are combined.

In some embodiments, the plurality of resilient members are axisymmetrically distributed with respect to the trigger member in a plane perpendicular to the first direction. And/or the plurality of elastic pieces are distributed in a central symmetry manner relative to the trigger piece on a plane perpendicular to the first direction, so that the pressing force can be uniformly dispersed.

In some embodiments, the plurality of elastic members includes a first elastic member and a second elastic member disposed opposite each other in the second direction, and a third elastic member and a fourth elastic member disposed opposite each other in the third direction, the first elastic member and the second elastic member being disposed axisymmetrically with respect to the trigger member, the third elastic member and the fourth elastic member being disposed axisymmetrically with respect to the trigger member; the first direction, the second direction and the third direction are perpendicular to each other.

By adopting the scheme, the plurality of elastic pieces are also axisymmetrically distributed in the second direction and the third direction, so that the pressing force acting on each part of the touch circuit board is balanced better.

In some embodiments, the length of the touch circuit board in the second direction is greater than the length of the touch circuit board in the third direction, at least one elastic arm of the first elastic member and the second elastic member is two elastic arms arranged at intervals in the third direction, and at least one elastic arm of the third elastic member and the fourth elastic member is one elastic arm.

By adopting the scheme, the pressing force can be smoothly transmitted to the central area under the action of the first elastic arm or the second elastic arm when the two side edges in the second direction are pressed. Because the force arm between the supporting part in the third elastic piece and the fourth elastic piece and the central position of the touch circuit board is short, an elastic arm is arranged in the third elastic piece and the fourth elastic piece, and the pressing is more labor-saving.

In some embodiments, the two resilient arms of the first resilient member and the two resilient arms of the second resilient member are each axisymmetrically disposed about a first axis extending in the second direction and through the trigger center. The elastic arms of the third elastic piece and the elastic arms of the fourth elastic piece are positioned on a second axis, and the second axis extends along a third direction and passes through the center of the trigger piece.

In some embodiments, the support portion of the first elastic member is disposed axisymmetrically with respect to the first axis, and the support portion of the second elastic member is disposed axisymmetrically with respect to the first axis. The supporting portion of the third elastic piece is arranged in an axisymmetric mode relative to the second axis, and the supporting portion of the fourth elastic piece is arranged in an axisymmetric mode relative to the second axis.

By adopting the scheme, the overall structure of the first elastic piece and the second elastic piece including the supporting part and the elastic arm is axisymmetric to the first axis, and the overall structure of the third elastic piece and the fourth elastic piece including the supporting part and the elastic arm is axisymmetric to the second axis, so that the uniformity of pressing hand feeling of the touch pad is further enhanced.

In some embodiments, in each of the first and second elastic members: each of the two elastic arms is arranged in a linear strip-shaped structure, and the distance between the two elastic arms is gradually reduced or the same from the first end to the second end. Or, each elastic arm of the two elastic arms is arranged into an arc-shaped strip structure, the first ends of the two elastic arms are connected, and the distance between the two elastic arms is gradually increased from the first end to the second end, so that the two elastic arms form a semi-elliptic strip structure.

In some embodiments, the base plate includes an outer rim surrounding an outer peripheral side of the central portion, a central portion, and a connecting portion connected between the outer rim and the central portion, the second ends of the respective spring arms being connected to an outer peripheral edge of the central portion. A plurality of hollowed-out parts are formed between the outer frame, the central part and the connecting part in a surrounding mode, the hollowed-out parts are in one-to-one correspondence with the elastic pieces, and the elastic pieces are arranged in a lamination mode with the corresponding hollowed-out parts in the first direction.

By adopting the scheme, when the bottom plate is processed, the plate is cut, and then the cut part is bent to form the corresponding elastic piece and the hollowed-out part.

In some embodiments, the touch pad further includes a buffer disposed on the central portion, and when the touch circuit board moves toward the base plate in the first direction, the buffer on the central portion can press the trigger member to cause the trigger member to be triggered. The buffer piece is used for buffering the impact force of the trigger piece so as to prevent the two rigid bodies from directly contacting to damage the trigger piece or the bottom plate.

In some embodiments, the plurality of elastic pieces and the bottom plate are integrally formed, so that the production process and the installation flow of the touch control plate are simplified, and a smaller gap can be reserved between the touch control circuit board and the bottom plate under the condition of ensuring the same pressing stroke as the existing scheme.

In some embodiments, the touch pad further includes a plurality of first limiting portions, where each of the plurality of first limiting portions is fixedly connected to the bottom plate and disposed on a side of the bottom plate near the touch circuit board. When the touch control circuit board moves towards the bottom plate along the first direction, at least one first limiting part in the plurality of first limiting parts can be abutted against the touch control circuit board so as to limit the displacement of the touch control circuit board towards the bottom plate, and the touch control circuit board is prevented from being excessively pressed by a user to damage the touch control board.

In some embodiments, the plurality of first limiting portions are axisymmetrically distributed on a plane perpendicular to the first direction, and/or the plurality of first limiting portions are centrosymmetrically distributed on a plane perpendicular to the first direction. And each first limiting part is arranged in a lamination way along the first direction and the peripheral area of the touch circuit board.

In some embodiments, the touch pad further includes a housing, an accommodating space is formed in the housing, the bottom plate is mounted on the housing, the touch circuit board, the bottom plate and the plurality of elastic members are all located in the accommodating space, and a surface of the touch circuit board facing away from the bottom plate in the first direction is not covered by the housing. A plurality of second limiting parts extending outwards are arranged on the outer peripheral side of the touch control circuit board at intervals, and each of the second limiting parts can be abutted with the shell so as to limit the displacement of the touch control circuit board at the position of each second limiting part in a direction away from the bottom plate.

By adopting the scheme, as the elastic piece and the touch control circuit board can integrally form a lever structure, the elastic piece can form a fulcrum of the lever structure, when the edge or the corner of one side of the touch control circuit board is pressed, the other side part of the touch control circuit board opposite to the pressing position is easy to tilt, and the second limiting part is abutted with the shell, so that the corresponding part of the touch control circuit board can be limited to move towards the direction deviating from the bottom plate, and part of the structure is prevented from tilting upwards.

The embodiment of the application also provides electronic equipment, which comprises the touch pad provided by any embodiment, can adopt a lighter and thinner design, and has better experience and higher reliability when the touch pad is used for human-computer interaction.

Drawings

Fig. 1 a-1 c are schematic structural diagrams of a first touch pad;

FIG. 2 is a schematic diagram of a second touch pad;

FIG. 3 is a schematic structural diagram of a third touch pad;

fig. 4 is a schematic structural diagram of a fourth touch pad;

FIG. 5 is a schematic diagram of an electronic device according to an embodiment of the present application;

fig. 6a is a schematic perspective view of a touch pad according to an embodiment of the application;

FIG. 6b is a schematic perspective view of another view of a touch pad according to an embodiment of the application;

FIG. 6c is a schematic diagram illustrating an exploded structure of a touch pad according to an embodiment of the present application;

fig. 7a is a schematic perspective view of a touch circuit board in a touch pad according to an embodiment of the application;

fig. 7b is a schematic bottom view of a touch circuit board in the touch pad according to an embodiment of the application;

FIG. 8 is a cross-sectional view taken along the direction E-E in FIG. 6 a;

FIG. 9 is a cross-sectional view taken along the direction F-F in FIG. 6 a;

FIG. 10 is a schematic diagram of a touch pad according to an embodiment of the present application;

fig. 11-1 (a) and fig. 11-1 (B) are schematic diagrams illustrating a pressing process of a touch pad according to an embodiment of the application;

FIGS. 11-2 (A) to 11-2 (D) are schematic views illustrating force transmission processes when the touch pad is pressed at different positions according to the embodiment of the application;

fig. 12a is a schematic perspective view of a bottom plate in a touch pad according to an embodiment of the application;

FIG. 12b is a schematic plan view of a bottom plate of a touch pad according to an embodiment of the present application;

fig. 13 a-13 b are schematic cross-sectional views of other embodiments of touch pads according to the present application;

fig. 14a to 14e are schematic top view structures of elastic members in a touch pad according to an embodiment of the application;

FIG. 15 is a schematic diagram illustrating the cooperation between a bottom plate and a touch circuit board in a touch panel according to an embodiment of the application;

FIGS. 16 a-16 c are schematic views illustrating a touch pad belt housing according to an embodiment of the application;

Fig. 17 a-17 c are schematic diagrams illustrating the cooperation between a housing and a touch circuit board in a touch pad according to an embodiment of the application, wherein fig. 17c is a partially enlarged view of a portion G in fig. 17 b;

FIG. 18 is a graph showing the change of the resilience force of the pressing touch pad according to the displacement of the touch circuit board according to the embodiment of the present application;

FIG. 19 is a schematic diagram illustrating a position distribution of each measurement point in the touch pad according to an embodiment of the present application;

FIG. 20 is a graph showing the change of the maximum resilience force in the resilience curve of each measurement point of the touch pad according to the embodiment of the application;

FIG. 21 is a graph showing a change in a sectional sense of each measurement point of a touch pad according to an embodiment of the present application.

Reference numerals illustrate:

the prior art comprises the following steps:

100a': a touch panel; 1a': a touch control circuit board; 2a': a bottom plate; 3a': a trigger; 4a': a cover plate;

100b': a touch panel; 1b': a touch control circuit board; 2b': a bottom plate; 3b': a trigger;

4b': dome rubber; 5b': a reinforcing structure;

100c': a touch panel; 1c': a touch control circuit board; 2c': a bottom plate; 3c': a trigger; 4c': stamping metal plates;

100d': a touch panel; 1d': a touch control circuit board; 2d': a bottom plate; 3d': a trigger;

4d': a balance bar; 5d': a hook.

The application comprises the following steps:

100: a touch panel;

1: a touch control circuit board; 11: a touch surface; 12: a mounting surface; 13: a second limit part;

2: a bottom plate; 21: an outer frame;

22: a center portion; 221: an operating member; 222: a buffer member;

23: a connection part; 24: a hollowed-out part; 25: a first limit part;

3: a trigger;

4: an elastic member; 401: a support part;

402: an elastic arm; 4021: a first end; 4022: a second end;

41: a first elastic member; 42: a second elastic member; 43: a third elastic member; 44: a fourth elastic member;

51: a cover plate; 52: an adhesive layer;

6: a housing;

200: an electronic device; 71: a first housing; 72: a second housing;

73: a host; 74: a keyboard; 75: a display;

o1: a central region; o2: a peripheral region;

and z: a first direction; x: a second direction; y: a third direction;

and p: a first axis; q: a second axis;

m: and an inclined plane.

Detailed Description

Further advantages and effects of the present application will become apparent to those skilled in the art from the disclosure of the present specification, by describing the embodiments of the present application with specific examples. While the description of the application will be presented in connection with certain embodiments, it is not intended to limit the features of this application to only this embodiment. Rather, the purpose of the present application is to cover other alternatives or modifications, which may be extended by the claims based on the application. The following description contains many specific details for the purpose of providing a thorough understanding of the present application. The application may be practiced without these specific details. Furthermore, some specific details are omitted from the description in order to avoid obscuring the application. It should be noted that the embodiments of the present application and the features of the embodiments can be combined with each other without collision.

It should be noted that in this specification, like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present application, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific 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 should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and can be, for example, fixedly connected, detachably connected, or integrally connected; can be a mechanical connection or an electrical connection; can be directly connected or indirectly connected through an intermediate medium, and can be communication 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.

In the description of the present application, it should be understood that "electrically connected" in the present application may be understood that components are in physical contact and electrically conductive; it is also understood that the various components in the wiring structure are connected by physical wires such as printed circuit board (printed circuit board, PCB) copper foil or leads that carry electrical signals.

In the description of the present application, it should be noted that the mutual perpendicularity in the present application is not absolute perpendicularity, and that the approximate perpendicularity (for example, the included angle between two structural features is 89.9 °) due to the machining error and the assembly error is also within the scope of the mutual perpendicularity in the present application. The mutual parallelism in the present application is not absolute, and approximate parallelism (e.g., an angle of 0.1 ° between two structural features) due to machining errors and assembly errors is also within the scope of the mutual parallelism in the present application. The axial symmetry in the present application is not absolute, and approximate axial symmetry (e.g., a partial structure offset by a distance or angle with respect to the symmetry axis) due to machining errors and assembly errors is also within the scope of the axial symmetry in the present application. The central symmetry in the present application is not an absolute central symmetry, and approximate central symmetry (e.g., a partial structure offset by a distance or angle with respect to the symmetry axis) due to machining errors and assembly errors is also within the scope of the central symmetry in the present application. The present application is not particularly limited thereto.

For the purpose of making the objects, technical solutions and advantages of the present application more apparent, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

The touch pad always plays a role in man-machine interaction and productivity in electronic devices such as notebook computers, along with the miniaturization of the electronic devices and the diversification of functions, the area of the touch pad is larger and larger, and how to adapt to the trend of the miniaturization of the electronic devices while ensuring the pressing hand feeling of the touch pad, thus testing the capability of designers. However, the conventional global-domain-pressed touch pad has uneven pressing hand feeling at each position, and is prone to appearance level differences in electronic devices, and cannot achieve both good pressing hand feeling and a small thickness. The above problems with touch pad designs in some embodiments are described below with reference to the accompanying drawings.

Referring to fig. 1 a-1 c, fig. 1 a-1 c are schematic structural diagrams of a first touch pad.

As shown in fig. 1a to 1c, the touch pad 100a 'includes a touch circuit board 1a' for implementing functions such as touch position recognition and the like, and a bottom plate 2a 'for supporting the touch circuit board 1a', on which a trigger piece 3a 'such as a switch key is mounted on the touch circuit board 1a', and a certain gap is provided between the bottom plate 2a 'and the touch circuit board 1a'. A cover plate 4a ' is generally further disposed on a side of the touch circuit board 1a ' away from the bottom plate, so as to protect the touch circuit board 1a ', and a user contacts the touch circuit board 1a ' through the cover plate 4a '. When the user presses the touch circuit board 1a ' downward (i.e., toward the bottom plate), the touch circuit board 1a ' moves toward the bottom plate 2a ', and the gap between the two becomes smaller, so that the trigger piece 3a ' is pressed by the bottom plate 2a ', thereby being triggered and generating a trigger signal, and completing the operation of "click confirmation". Meanwhile, in order to be able to feed back information of successful operation to the user, the trigger 3a' generates a resilient force in the process of being pressed, so that the user can feel that the trigger is successfully triggered.

With the trend of increasing area of the touch pad, more and more touch pads support global domain pressing, i.e. pressing various positions (including the center, edges and corners) of the touch circuit board 1a 'can cause the triggering member 3a' to be triggered. However, the trigger 3a' is usually installed at the center of the touch circuit board, so that the touch feeling (which can be understood as the feedback force of the trigger device) of pressing the touch circuit board is inconsistent when pressing different positions of the touch circuit board, and the experience of clicking for confirmation is greatly reduced.

As shown in fig. 1b, when the central area of the touch circuit board 1a 'is pressed, the pressing force directly acts on the trigger piece 3a' through the touch circuit board 1a ', so that the force fed back by the trigger piece 3a' is relatively labor-saving during pressing, and the feedback force is relatively strong. As shown in fig. 1c, when the edge and corner positions of the touch circuit board 1a ' are pressed, the force arm between the pressing position and the central area of the touch circuit board 1a ' is long, the pressing force cannot be transmitted from the pressing position to the central area in time, so that the pressing is laborious, and the feedback force of the trigger piece 3a ' is small.

As shown in fig. 1c, the touch circuit board 1a' is limited by the structure and the material, and has poor rigidity, and when the edge and corner positions are pressed, the pressing position and the center region are easily deformed, and a part of the touch circuit board is bent toward the bottom plate. In this case, when the gap between the touch circuit board 1a ' and the bottom plate 2a ' is small, there may be a case where the pressing force shown in the drawing cannot be transmitted to the trigger 3a ', and a pressing failure occurs. Although this phenomenon can be improved by increasing the gap between the touch circuit board 1a 'and the bottom plate 2a', it may result in an increase in the thickness of the touch circuit board 1a ', and when the edge, corner, etc. of the touch circuit board 1a' are pressed, the pressing point excessively sags, resulting in an appearance level difference between the touch circuit board 1a 'and other parts of the electronic device (it may be understood that the user excessively presses the position in fig. 1c to trigger the trigger piece 3a', resulting in an excessively large difference in the height between the position and other structures in the electronic device, resulting in a dent).

In some products, some auxiliary supporting structures can be arranged between the touch circuit board 1a 'and the bottom plate 2a' to reduce deformation of the touch circuit board and optimize transmission effect of pressing force, but the structure is generally complex, which is unfavorable for lightening and thinning of electronic equipment, and the effect of improving the uniformity of pressing hand feeling of the global domain is not obvious. The following illustrates several touch pads and their problems with the accompanying drawings.

Referring to fig. 2, fig. 2 is a schematic structural diagram of a second touch pad.

As shown in fig. 2, in a touch pad 100b ', a plurality of dome rubbers 4b ' are disposed on a bottom plate 2b ' near the edge of a touch pad 1b ', and when the edge or corner position of the touch pad 1b ' is pressed, the area where the pressing point is located moves toward the bottom plate and contacts with the dome rubbers 4b ', and the dome rubbers 4b ' support the area to prevent deformation, so that the pressing force can be transmitted to the central area of the touch pad 1b ' to trigger a trigger piece 3b ', and the consistency of pressing hand feeling of the touch pad is improved. However, since the dome rubber 4b 'is pressed when it contacts the touch panel 1b', it is easily deformed with long use and has a short life. Moreover, the dome rubber can also press the bottom plate, so that the bottom plate is deformed and damaged. Therefore, a reinforcing structure 5b 'such as metal sheet is required to be disposed below the bottom plate 2b' to enhance the strength of the bottom plate, but this may result in an increase in the thickness of the entire touch panel, so that the touch panel adopting such a structure cannot achieve both uniform pressing feeling and a thinner thickness.

Referring to fig. 3, fig. 3 is a schematic structural diagram of a third touch pad.

As shown in fig. 3, in a touch pad 100c ', the touch circuit board 1c ' and the bottom plate 2c ' are supported by a bent stamping metal plate 4c ', so that the pressing force can be transmitted to the central area of the touch circuit board 1c ' under the action of the stamping metal plate 4c ' when pressing the touch circuit board 1c ', thereby triggering the trigger piece 3c ', and improving the uniformity of pressing hand feeling of the touch pad 100c '. However, the structure of the stamping sheet metal 4c' is complex, the occupied space is large, and the thickness of the touch pad is increased to a certain extent. Moreover, when the touch pad 100c 'is applied to electronic devices such as a notebook computer, the stamped sheet metal 4c' needs to be adapted to the main structure of different products, so that the compatibility is poor and the touch pad cannot be used in different electronic devices.

Referring to fig. 4, fig. 4 is a schematic structural diagram of a fourth touch pad.

As shown in fig. 4, in a touch pad 100d ', a plurality of metal balance bars 4d' are installed between the touch pad 1d 'and the bottom plate 2d', one end of each balance bar 4d 'is clamped on a plastic part clamping hook 5d' on one side of the touch pad 1d 'close to the bottom plate 2d', and can rotate relative to the touch pad 1d ', and the other end of each balance bar is slidably installed on the bottom plate 2 d'. When the positions of the touch circuit board 1d 'are pressed, one end of each balance rod 4d' connected with the touch circuit board 1d 'rotates relative to the touch circuit board 1d', one end connected with the bottom plate 2d 'slides relative to the bottom plate, pressing force is uniformly dispersed to the positions of the touch circuit board 1d', and the whole pressing surface moves towards the bottom plate 2d 'together to trigger the trigger piece 3d', so that consistency of pressing handfeel of all positions is ensured. However, the structure is too complex, the number of structural members is large, and the assembly difficulty is high, which limits the light and thin design of the touch pad 100 d'. In addition, abnormal sound is generated when the balance bar 4d' moves, and wear and the like are generated when the balance bar is used too much.

Based on the above, the embodiment of the application provides a touch pad and electronic equipment, wherein the touch pad can trigger a trigger piece when pressed everywhere, and has uniform hand feeling, and appearance section difference is not easy to generate in the electronic equipment, so that better hand feeling and thinner thickness can be achieved.

The touch pad provided by the embodiment of the application can be applied to electronic equipment, and the electronic equipment can comprise but is not limited to common touch-controllable terminals such as notebook computers, mobile phones, tablet computers, intelligent watches, pen-and-electric keyboards, leather sheath keyboards, external keyboards, television remote controllers and the like. The application scenario of the touch pad will be described below by taking a notebook computer as an example.

Referring to fig. 5, fig. 5 is a schematic structural diagram of an electronic device according to an embodiment of the application.

As shown in fig. 5, the electronic device 200 includes a first housing 71 and a second housing 72 capable of rotating relatively, and further includes a display 75 mounted on the first housing 71, and a host 73 (see fig. 10), a keyboard 74, a touch pad 100, and the like mounted on the second housing 72. The display 75 and the first housing 71 may be at the display end of the electronic device 200, and the host 73, the keyboard 74, the touch pad 100, and the second housing 72 may be at the system end of the electronic device 200. The specific form of the host 73 is not limited, and may be, for example, an integrated system including a memory, a power supply, an optical drive, a processing module such as a processor (Central Processing Unit, CPU), etc. The processor can realize the functions of running an operating system, processing various data, running application programs, controlling a plurality of hardware connected to the processor and the like, and the keyboard 74, the touch pad 100, the mouse and the like are electrically connected with the processor, so that the operating information of a user can be sent to the processor, and the processor can send out corresponding instructions after analyzing and calculating.

In some examples, the housing formed by the first housing 71 and the second housing 72 may be a rear cover, a middle frame of the electronic device 200, or other frames of the electronic device 200 that serve as support mounts, which the present application is not limited to.

The display 75 is used for displaying images, and may be a liquid crystal display (liquid crystal display, LCD), an organic light emitting diode (organic light emitting diode OLEO) display, etc., which is not limited in this regard. A user may interact with the display 75 of the electronic device 200 via an external device such as a keyboard 74, a touch pad 100, and a mouse.

Further, the host 73 is electrically connected to the touch pad 100, when the user performs operations such as sliding and pressing on the touch pad 100, the touch pad 100 sends a touch signal to the host 73 according to the user operation, the host 73 recognizes and analyzes the received signal, sends a corresponding instruction, completes related operations, and maps an operation interface on the display 75.

It should be noted that the structure illustrated in the embodiment of the present application does not constitute a specific limitation of the electronic device 200. In other embodiments, the electronic device 200 may include more or fewer components than illustrated, e.g., the electronic device 200 may also include cameras, infrared sensors, etc.

The structure and operation principle of the touch pad 100 according to the embodiment of the present application will be described with reference to the accompanying drawings.

Referring to fig. 6a to fig. 10, fig. 6a is a schematic perspective view of a touch pad according to an embodiment of the application; fig. 6b is a schematic perspective view of another view angle of a touch pad according to an embodiment of the application, and fig. 6c is a schematic exploded view of the touch pad according to an embodiment of the application; fig. 7a is a schematic perspective view of a touch circuit board in a touch pad according to an embodiment of the application; fig. 7b is a schematic bottom view of a touch circuit board in the touch pad according to an embodiment of the application; FIG. 8 is a cross-sectional view taken along the direction E-E in FIG. 6 a; FIG. 9 is a cross-sectional view taken along the direction F-F in FIG. 6 a; fig. 10 is a schematic diagram of a touch pad according to an embodiment of the application.

As shown in fig. 6a to 6c, the touch pad 100 includes a touch circuit board 1 and a base plate 2 stacked in a first direction z, and the base plate 2 is used for supporting the touch circuit board 1. The first direction z is a thickness direction of the touch pad 100. In general, the thickness direction of the touch pad 100 is the same as the thickness direction of the electronic device 200. In the electronic apparatus 200 shown in fig. 5, the thickness direction of the electronic apparatus 200 is the thickness direction of the second housing 72.

As shown in fig. 7a to 9, for convenience of description, two surfaces of the touch circuit board 1 opposite to each other in the first direction z are respectively defined as a touch surface 11 and a mounting surface 12, and the touch surface 11 refers to a surface facing a user, that is, a surface on the same side as the keyboard 74 in fig. 5, and the user realizes man-machine interaction through the touch surface 11. The mounting surface 12 is another surface opposite to the touch surface 11 in the first direction z, and is used for connection with the chassis 2 and the like.

The touch control circuit board 1 is a circuit board having a function of realizing touch recognition or the like, and is capable of detecting a position where a user applies pressure or touches. Those skilled in the art will appreciate that the specific materials and types of the touch circuit board 1 are not limited. In one example, the touch circuit board 1 may be a printed circuit board (Printed Circuit Board PCB) that is assembled by mounting on a surface mount technology chip on a PCB board, or by dip-mounting electronic components to implement the touch sensing function of the touch panel 100. Alternatively, the touch circuit board 1 may also employ a flexible circuit board (Flexible Printed Circuit, FPC) in which electronic components that realize functions such as touch recognition are integrated.

Wherein the type of electronic component is not limited. In one embodiment, the touch circuit board 1 includes a touch sensor (not shown in the figure), which is a sensing device of the touch circuit board 1 and is capable of sensing a touch position of a user. Types of which may include capacitive touch sensors and the like. The capacitive touch sensor can sense a capacitance change of a touch position of a user and output a corresponding touch sensing signal. In other embodiments, the touch sensor may be a voltage type touch sensor or other type of sensor, and the application is not limited in this regard.

As shown in fig. 6a to 6c, in an embodiment, the touch pad 100 may further include a cover plate 51, where the cover plate 51 is located on the side of the touch surface 11 of the touch circuit board 1, and the cover plate 51 is fixedly connected with the touch circuit board 1, so as to protect the touch circuit board 1. The user contacts with the touch control circuit board 1 indirectly through the cover plate 51 in the using process, and applies pressure to the touch control circuit board 1. Wherein the cover plate 51 may be a non-conductive rigid object such as glass, PC sheet, ceramic sheet, etc., which the present application is not limited to.

As will be appreciated by those skilled in the art, the specific manner of connection between the cover plate 51 and the touch circuit board 1 is not limited. In one embodiment, an adhesive layer 52 is disposed between the cover plate 51 and the touch circuit board 1, and the cover plate 51 and the touch circuit board 1 are fixedly connected through the adhesive layer 52, so that the cover plate 51 is attached to the touch surface 11 of the touch circuit board 1, and the touch sensing effect is enhanced. The glue in the adhesive layer 52 may be a liquid glue or a solid glue, such as a mesh double sided tape or OCA optical glue, which is not limited in the present application.

As shown in fig. 7 b-9, the central area O1 of the touch circuit board 1 is provided with a trigger 3. The central area O1 of the touch circuit board 1 may be understood as an area where the central position of the touch circuit board 1 is located. In one example, as shown in fig. 7 a-7 b, the touch circuit board 1 is a rectangular board, the center of the touch circuit board 1 is located at the intersection of two diagonals of the rectangle, and the center area O1 of the touch circuit board 1 is the area where the intersection of two diagonals of the touch circuit board 1 is located. In some example scenarios, when the touch circuit board 1 is a circular plate, the center position of the touch circuit board 1 is located at the center of the circular plate, and the center area O1 of the touch circuit board 1 is the area where the center of the touch circuit board 1 is located. When the touch circuit board 1 is a regular polygon board, the center position of the touch circuit board 1 is located at the center of the regular polygon, which is not listed in the present application.

It should be noted that, the peripheral area O2 of the touch circuit board 1 may be understood as an area of the touch circuit board 1 except the central area O1, including edges, corners, and the like.

Specifically, the trigger 3 is configured to implement a pressing triggering function of the touch pad 100, and when a user presses (may be understood as applying a pressing force to the touch pad 100 in the first direction z toward the base plate 2), the touch pad 1 moves in the first direction z toward the base plate 2, and when the trigger 3 contacts the base plate 2, the pressing force is pressed to generate a triggering signal, and the triggering signal is sent to the host 73 of the electronic device 200. When the trigger 3 is pressed, the user can judge whether the pressing operation is successful or not by the sensed resilience force. Specifically, the trigger 3 may be a switch member having a trigger action such as a Metal Dome switch (Metal Dome), a key switch, or the like. The metal film switch is a polyethylene terephthalate (polyethylene terephthalate, PET) sheet containing a metal spring sheet (a dome sheet), when the metal film switch is extruded, part of the metal film switch is turned over towards one side of the touch control circuit board 1 to deform, and the metal film switch is in contact with a circuit on the touch control circuit board 1 to be conducted, and can automatically return to an initial state when the extrusion force disappears. The key switch can be compressed for a certain stroke when being extruded, so that the internal circuit is conducted, and a trigger signal is sent out. When the extrusion force disappears, the key switch automatically rebounds to the initial position under the action of the self elastic force. In addition to the above examples, the triggering element 3 may be other triggering devices, and the present application is not limited to the specific type and material thereof. The triggering element 3 may be fixed on the mounting surface 12 of the touch circuit board 1 by means of adhesion or a patch, or may be embedded in the touch circuit board 1, which is not limited in the present application.

In one example, as shown in fig. 10, the operation of the touch pad 100 is: when the user touches the touch pad 100 but does not apply pressure to the touch pad 100, the touch sensor on the touch circuit board 1 recognizes information of a touch position, a touch gesture, etc., and transmits the touch information to the host 73 of the electronic device 200. When a user touches the touch pad 100 while applying pressure to the touch pad 100, the touch pad 1 moves toward the base plate 2 as a whole, the trigger 3 is pressed and triggered, and a trigger signal is transmitted from the trigger 3 or the touch pad 1 to the host 73. At the same time, the rebound force of the trigger 3 gives a feel feedback to the user. It will be appreciated by those skilled in the art that the above-described operation is merely exemplary, and the practical application is not limited thereto.

As shown in fig. 6a to 9, the touch pad 100 further includes a plurality of elastic members 4, where all the elastic members 4 are disposed between the touch circuit board 1 and the bottom plate 2 in the first direction z, and are distributed around the periphery of the triggering member 3 on a plane perpendicular to the first direction z.

Wherein each elastic member 4 may comprise a support 401 and at least one elastic arm 402. The supporting portion 401 is supported by and fixedly connected to the touch circuit board 1. Each elastic arm 402 has a first end 4021 that is in contact with the support portion 401 and a second end 4022 that is in contact with the bottom plate 2, and each elastic arm 402 extends from the first end 4021 to the second end 4022 in a direction inclined with respect to the first direction z. Wherein each elastic arm 402 is capable of being elastically deformed and resilient under the action of a pressing force.

A plurality of elastic pieces 4 are arranged between the touch control circuit board 1 and the bottom plate 2, on one hand, the elastic pieces 4 can provide supporting force for the touch control circuit board 1, on the other hand, the elastic pieces 4 can generate elastic deformation, so that the touch control circuit board 1 and the bottom plate 2 can move relatively, a user can press the touch control circuit board 1 to the direction of the bottom plate 2 to finish operations such as click confirmation, and the touch control circuit board 1 can return to an initial position under the action of resilience force of the elastic pieces 4 after the pressing is finished. The elastic member 4 includes a supporting portion 401 and an elastic arm 402, where the elastic arm 402 is a portion that generates elastic deformation and resilience force under the action of a pressing force, and the supporting portion 401 is disposed at a first end 4021 of the elastic arm 402, that is, an end near to the touch circuit board 1 in the first direction z, and is fixedly connected to the touch circuit board 1 to support the touch circuit board 1.

Each elastic arm 402 extends from the first end 4021 to the second end 4022 in a direction inclined with respect to the first direction z, which is understood to mean that the direction in which the elastic arm 402 extends from the first end 4021 to the second end 4022 has an angle with respect to the first direction z, and is understood to mean that the tangent plane at each location of the plane on which each elastic arm 402 is located (where the tangent plane of the plane is the plane itself) is inclined with respect to the first direction. With this structure, even in the case where the entire thickness of the touch pad 100 is thin and the gap between the touch pad 1 and the bottom plate 2 is small, it is ensured that there is enough space for installing the elastic member 4, and when the touch pad 1 is pressed, as the displacement of the touch pad 1 increases, the larger the angle of inclination of the elastic arm 402 with respect to the first direction z is, the smaller the space occupied by the elastic arm 402 in the first direction z is, so that the touch pad 100 can be designed to have a smaller thickness, which is advantageous for the light and thin electronic device 200. The contribution of the technical scheme of the present application to the light and thin touch pad 100 is specifically described below with reference to fig. 11-1 (a) and 11-1 (B).

Referring to fig. 11-1 (a) and 11-1 (B), fig. 11-1 (a) and 11-1 (B) are schematic diagrams illustrating a pressing process of a touch pad according to an embodiment of the application.

As shown in fig. 11-1 (a) and 11-1 (B), in order to better illustrate the effect of the touch pad 100 provided by the present application on the light and thin thickness, a state when the touch pad 100 is not pressed is defined as an initial state (i.e., a state in fig. 11-1 (a)), a state when the touch pad is pressed and the trigger 3 can be triggered is defined as a pressed state (i.e., a state in fig. 11-1 (B)), a displacement of the touch pad 1 from the initial state to the pressed state is a pressing stroke D1, a total thickness of the touch pad 100 in the pressed state is D2, and a total thickness of the touch pad 100 in the initial state is D3. In this embodiment, since the elastic arm 402 extends from the first end 4021 to the second end 4022 in a direction inclined with respect to the first direction z, the distance between the touch circuit board 1 and the chassis 2 in the pressed state may be designed to be the same as the thickness d of the elastic arm 402 in the limit state. In the prior art, the pressing stroke D1 is generally between 0.5mm and 1mm, the total thickness D2 of the touch pad 100 in the pressed state is 4.7mm at minimum, and the total thickness D3 of the touch pad 100 in the initial state is 5.2mm at minimum. Under the condition that the pressing stroke is unchanged, the total thickness of the touch control plate 100 in the pressing state of the scheme is D2 and can be 2.9mm at minimum, and the total thickness of the touch control plate 100 in the initial state is D3 and can be 3.4mm at minimum, so that the contribution of the scheme to the thinning of the touch control plate 100 can be seen.

Further, as shown in fig. 8 to 9, the plurality of elastic members 4 are distributed around the periphery of the trigger member 3, and the trigger member 3 is located in the central area O1 of the touch circuit board 1, that is, the plurality of elastic members 4 are distributed around the trigger member 3 in the peripheral area O2 of the touch circuit board 1. By adopting the structure, the elastic piece 4 supports the peripheral area O2 of the touch control circuit board 1, the pressing force can be uniformly transmitted to each position of the touch control circuit board 1 under the supporting action of the elastic piece 4, the feedback force of the triggering piece 3 is relatively consistent when pressing each position, the triggering piece 3 in the central area O1 can be smoothly triggered when pressing the edge and corner position of the touch control circuit board 1, and the pressing hand feeling is relatively uniform. In addition, the supporting portion 401 thickens the peripheral area O2 of the touch circuit board 1, when the touch circuit board 1 is pressed, bending deformation is not easy to occur to the touch circuit board 1, the whole touch circuit board 1 moves towards the bottom plate 2, the problems that pressing force caused by bending of the touch circuit board 1 when the edge and corner positions of the touch circuit board 1 are pressed cannot be transmitted to the central area O1, the pressing position excessively sags and the like are avoided, and meanwhile, the appearance level difference of the touch circuit board 100 and the electronic equipment 200 is reduced.

In addition, compared with the structure of the touch pad in fig. 2-4, the supporting structure elastic member 4 between the touch circuit board 1 and the bottom plate 2 in the touch pad 100 provided by the embodiment of the application has a simple structure, the elastic arm 402 extends along the direction inclined to the first direction z as a whole, and can be designed into a thinner structure such as a sheet shape, and the like, so that the structure connection such as a hook and a hinge is not needed, and the problem of abnormal noise generated at the connection part is avoided. On the other hand, when the elastic arm 402 elastically deforms, the elastic arm elastically presses the base plate 2 obliquely (i.e., the direction of the pressure applied to the base plate 2 by the elastic arm 402 is inclined relative to the first direction z), so that the positive pressure on the base plate 2 is small, the base plate 2 does not need to be specially thickened or a reinforcing structure is arranged below the base plate 2 to support the elastic member 4, the overall occupied space is small, and the touch pad 100 can be smoothly installed when the thickness of the touch pad 100 is limited. In addition, the elastic arm 402 can repeatedly generate elastic deformation and automatic rebound, so that the service life is long, the structure does not need to be specially designed according to the main system structure of the electronic equipment, and the applicability is strong.

Therefore, the touch pad 100 provided by the embodiment of the application has a uniform pressing hand feeling at each position, is not easy to generate an appearance section difference in the electronic device 200, can give consideration to a better hand feeling and a thinner thickness, and solves the problems of the touch pad structures shown in fig. 2-4.

To more clearly illustrate the uniformity of the touch feeling of the touch pad 100 pressed everywhere, the force transmission process when pressing the touch pad 100 at each position is analyzed with reference to the drawings.

Referring to fig. 11-2 (a) -fig. 11-2 (D), fig. 11-2 (a) -fig. 11-2 (D) are schematic diagrams illustrating a force transmission process when the touch pad is pressed at different positions according to an embodiment of the application.

As shown in fig. 11-2 (a) -11-2 (D), after the elastic member 4 is disposed between the touch circuit board 1 and the bottom plate 2, the portion where the supporting portion 401 of the elastic member 4 is connected with the touch circuit board 1 thickens the layer structure, and the rebound force of the elastic arm 402 provides support for the portion, so that the whole area is not easy to bend, the pressing force can be more uniformly transferred to each position of the touch circuit board 1 when the edge portion of the touch pad 100 is pressed, the whole pressing surface can move more smoothly towards the bottom plate 2, and the central triggering member 3 can be triggered more stably, so that the pressing uniformity of the global touch pad 100 can be ensured. The broken line arrow above the cover plate 51 in fig. 11-2 (a) -fig. 11-2 (D) indicates the pressed position, and the solid line arrow indicates the force transmission process.

As shown in fig. 11-2 (a), when the center position of the touch circuit board 1 is pressed, the pressing force is directly transmitted from the touch circuit board 1 to the trigger 3, so that the trigger can be pressed stably, the entire touch circuit board 1 moves toward the bottom plate 2, and at this time, most of the rebound force of the trigger 3 is transmitted to the user through the touch circuit board 1 and the cover plate 51, and the rebound force of the trigger 3 is mainly used for feeding back the user.

As shown in fig. 11-2 (B), when the position of the touch panel 1 corresponding to the support portion 401 is pressed, the pressing force is directly transmitted to the elastic member 4 at the pressing position, and the elastic arm 402 of the elastic member 4 is pressed to elastically deform. At the same time, a part of the pressing force is also transmitted to the central area O1 along the arrow direction in the figure, and the cover plate 51 and the touch panel 1 are integrally lowered to press the trigger 3. At this time, because the force arm between the pressing position and the trigger piece 3 is longer, the touch control circuit board 1 and the cover plate 51 absorb part of the rebound force of the trigger piece 3, the rebound force of the trigger piece 3 felt by the user is not obvious, the rebound force of the elastic piece 4 compensates the rebound hand feeling absorbed by the touch control circuit board 1 and the cover plate 51, the rebound force of the trigger piece 3 is supplemented, at this time, the trigger piece 3 and the elastic piece 4 feed back the user together, and the occupation of the two is relatively uniform.

As shown in fig. 11-2 (C), when the touch panel 1 is pressed at a position between the trigger 3 and the supporting portion 401, pressing force is dispersed and applied to the trigger 3 and the elastic member 4, and serves to compress the elastic arm 402 and press the trigger 3, at this time, the trigger 3 and the elastic member 4 feedback the user together, and the rebound force of the trigger 3 is relatively large.

As shown in fig. 11-2 (D), when the outer edge of the touch pad 100 is pressed, the pressing force is transmitted to the position of the elastic arm 402 of the elastic member 4 in the arrow direction, and the supporting portion 401 thickens and supports the area where the touch pad 1 and the cover plate 51 are easily bent, and the area does not generate significant bending, but moves toward the bottom plate 2 along with the pressed position, so that the pressing force is transmitted to the central area O1 in the arrow direction, and presses the trigger member 3. At this time, the trigger 3 and the elastic member 4 jointly feed back to the user, and the rebound force of the elastic member 4 is relatively large.

It will be understood by those skilled in the art that the material of the elastic members 4 is not limited as long as the elastic members can be elastically deformed, and the material of each elastic member 4 may be the same or different. In one embodiment, each elastic member 4 is a spring. Moreover, the elastic arms 402 of the elastic member 4 only need to be inclined from the first end 4021 to the second end 4022 along the direction opposite to the first direction z, so that the touch pad 100 can uniformly press the touch feeling and the thinner thickness, and the specific structure of each elastic arm 402 of the elastic member 4 and the elastic member 4 is not limited, and the following description is made with reference to the accompanying drawings.

In one embodiment, as shown in fig. 8-9, 11-1 (a) -11-2 (D), the respective elastic arms 402 in each elastic member 4 extend from the first end 4021 to the second end 4022 in a direction away from the support 401 in a plane perpendicular to the first direction z. Or it may be understood that the first end 4021 and the second end 4022 of each elastic arm 402 are located on different straight lines in the first direction z, and the straight line where the second end 4022 is located is far away from the supporting part relative to the first end 4021. By such a design, stacking of the structure of the elastic arm 402 itself in the first direction can be avoided, and less space can be occupied.

In one embodiment, as shown in fig. 8 to 9, 11-1 (a) -11-2 (D), in each elastic member 4, the first end 4021 of each elastic arm 402 is connected to the support portion 401 toward the outer edge of the trigger 3, and, on a plane perpendicular to the first direction z, each elastic arm 402 is entirely located between the support portion 401 and the trigger 3. The touch surface 11 and the mounting surface 12 of the touch circuit board 1 are both planes perpendicular to the first direction z.

Note that, the first end 4021 of each elastic arm 402 is connected to the outer edge of the supporting portion 401 facing the trigger 3, and the elastic arms 402 are entirely located between the supporting portion 401 and the trigger 3, which can be understood as follows: in the first direction z, the projection of the elastic arm 402 onto the mounting surface 12 is located between the trigger 3 and the projection of the support portion 401 onto the mounting surface 12, and the projection of the elastic arm 402 does not overlap with the projection of the support portion 401. With this structure, the support portion 401 is provided in the region of the touch panel 1 close to the outer periphery in the first direction z in a stacked manner, and the elastic member 4 can better support the edge, corner, and other positions of the touch panel 1 when pressing, thereby improving the uniformity of the pressing feeling. In other alternative embodiments, the first end 4021 of each elastic member 4 may be connected to any position of the supporting portion 401, or the elastic arm 402 may not be located between the supporting portion 401 and the triggering member 3, for example, the elastic arm 402 may be located on a side of the supporting portion 401 away from the triggering member 3, etc., which is not limited in the present application.

In one embodiment, as shown in fig. 8-9 and 11-1 (a) -11-2 (D), in order to enhance the supporting effect of the supporting portion 401 on the touch circuit board 1, the supporting portions 401 of the plurality of elastic members 4 extend along a plane perpendicular to the first direction z and are attached to the peripheral area O2 of the touch circuit board 1. The extension of the supporting portion 401 along the plane perpendicular to the first direction z means that the surface of the supporting portion 401 connected to the touch circuit board 1 extends along the plane perpendicular to the first direction z, so that the supporting portion 401 is more attached to the touch circuit board 1. In other alternative embodiments, the supporting portion 401 may also extend along a curved surface or an irregular surface, which is not limited by the present application. Further, the specific position where the supporting portion 401 is attached to the peripheral area O2 of the touch circuit board 1 is not limited, for example, the supporting portion 401 may be integrally attached to the peripheral area O2 of the touch circuit board 1, or may be partially attached to the peripheral area O2 of the touch circuit board 1, or partially attached to the central area O1 of the touch circuit board 1.

The structure of the elastic member 4 and the installation position of the elastic member 4 on the base plate 2 will be described in detail with reference to the drawings.

Referring to fig. 12 a-12 b, fig. 12a is a schematic perspective view of a bottom plate in a touch pad according to an embodiment of the application; fig. 12b is a schematic plan view of a bottom plate in a touch pad according to an embodiment of the application.

As shown in fig. 8-9, 11-1 (a) -12 b, in one embodiment, each of the resilient arms 402 may be provided in a bar-like configuration. It can be understood that each elastic arm 402 is elongated from the first end 4021 to the second end 4022, and the thickness d thereof is thinner, which is beneficial to reducing the overall thickness of the touch pad 100. In some alternative embodiments, the elastic arms 402 of each elastic member 4 may not be configured in a bar-shaped structure, or only a portion of the elastic arms 402 of the elastic members 4 may be configured in a bar-shaped structure, which is not limited by the present application.

As shown in fig. 8-9 and fig. 11-1 (a) -12 b, in one embodiment, each supporting portion 401 is configured as a sheet structure, and the supporting portion 401 of each elastic member 4 has a smaller thickness in the first direction z, which occupies a small space, and is beneficial to reducing the thickness of the entire touch pad 100. In some alternative embodiments, each supporting portion 401 may not be provided in a sheet-like structure, or only a portion of the supporting portion 401 of the elastic member 4 may be provided in a sheet-like structure, which is not limited by the present application.

As shown in fig. 8-9, 11-1 (a) -12 b, in one embodiment, each spring arm 402 is entirely located on a diagonal plane m that is inclined with respect to the first direction z. Or it can be understood that the two surfaces of the elastic arm 402 disposed opposite in the thickness direction thereof lie on or parallel to the inclined plane m, and the thickness direction of the elastic arm 402 is perpendicular to the inclined plane m. It can also be understood in conjunction with the drawings that, on a plane n parallel to the first direction z and passing through the first end 4021 and the second end 4022 of the elastic arms 402, each elastic arm 402 extends along a straight line inclined with respect to the first direction z as a whole from the first end 4021 to the second end 4022. This structure can further reduce the occupied space of the elastic member 4. Since the extending directions of the elastic arms 402 are different, the inclined planes m where the elastic arms 402 are located are different inclined planes, and only one inclined plane m is shown in fig. 12a as an illustration. The angle of inclination of the inclined plane m with respect to the first direction z is not limited, and for example, the angle between the inclined plane m and the first direction z may be 10 °, 15 °, 30 °, 45 °, 50 °, 60 °, 65 °, 70 °, 75 °, 80 °, and the like.

The tangential plane of the inclined plane m is the inclined plane itself.

In other alternative embodiments, the elastic arm 402 may also be integrally located on a curved surface, an arc surface, an irregular plane, etc. inclined with respect to the first direction z, which is not limited by the present application. Other configurations that can be employed for the resilient arms 402 of the resilient member 4 are illustrated below in connection with fig. 13 a-13 b.

Referring to fig. 13 a-13 b, fig. 13 a-13 b are schematic cross-sectional views of other embodiments of touch pads according to the present application.

As shown in fig. 13a, in one example, the elastic arm 402 is entirely located on a curved surface inclined with respect to the first direction z. Or it can be appreciated that each resilient arm 402 extends generally along a curve from the first end 4021 to the second end 4022 in a plane n parallel to the first direction z and passing through the first end 4021 and the second end 4022 of the resilient arm 402. As shown in fig. 13b, in one example, the elastic arm 402 is entirely located on an arc surface inclined with respect to the first direction z. Or it can be appreciated that each resilient arm 402 extends in an arc generally from the first end 4021 to the second end 4022 in a plane n parallel to the first direction z and passing through the first end 4021 and the second end 4022 of the resilient arm 402.

Referring to fig. 14a to 14e, fig. 14a to 14e are schematic top view structures of the elastic members in the touch pad according to the embodiment of the application.

Those skilled in the art will appreciate that the particular shape of each spring arm 402 is not limited when the spring arms 402 are arranged in a bar-like configuration. As shown in fig. 14 a-14 e, in one embodiment, each resilient arm 402 may be configured as a whole: linear, arcuate, curvilinear or folded strip-like structures. Alternatively, each elastic arm 402 may be provided with: at least two of the linear bar-shaped structure, the arc-shaped bar-shaped structure, the curved bar-shaped structure and the broken line-shaped bar-shaped structure are combined.

The linear bar-shaped structures are understood to be linear from different perspectives (e.g., top view and side view), and also to extend along a straight line from different perspectives. In one example, the arrangement of the elastic arms 402 in a linear bar-like structure can be understood as: on a plane n parallel to the first direction z and passing through the first end 4021 and the second end 4022 of the elastic arm 402, the elastic arm 402 extends along a straight line (refer to fig. 8), and a projection of the elastic arm 402 onto the touch circuit board 1 along the first direction z (refer to fig. 7 b) also extends along a straight line.

As will be appreciated by those skilled in the art, in a plane n (see fig. 8) parallel to the first direction z and passing through the first end 4021 and the second end 4022 of the resilient arm 402, the resilient arm 402 extends in an arc shape (see fig. 13 b), a curve shape (see fig. 13 a), or a fold line shape (not shown), and it is understood that the resilient arm 402 is a correspondingly shaped bar-shaped structure. When the projection of the elastic arm 402 on the touch circuit board 1 along the first direction z extends in an arc shape (refer to fig. 14 b), a curve shape (refer to fig. 14 d) or a fold line shape (refer to fig. 14 e), it can be understood that the elastic arm 402 is a bar-shaped structure with a corresponding shape.

The elastic arms 402 may have a structure in which at least two of a linear shape, an arc shape, a curved shape, and a folded shape are combined. For example, the whole of each elastic arm 402 in fig. 12a to 12b and 14a is a linear bar structure, the whole of each elastic arm 402 in fig. 13b and 14b is an arc bar structure, the whole of each elastic arm 402 in fig. 14c is a linear and arc combined bar structure, the whole of each elastic arm 402 in fig. 13a and 14d is a curved bar structure, the whole of each elastic arm 402 in fig. 14e is a folded bar structure, etc., or other bar structures are possible, which are not limited to this in the present application.

As will be appreciated by those skilled in the art, the elastic member 4 is supported between the touch circuit board 1 and the base plate 2, and the specific number and distribution thereof are not limited. For example, the number thereof may be 2, 4, 5, 8, etc., and each elastic member 4 may be distributed at various positions on a plane perpendicular to the first direction z. In one embodiment, in order to ensure uniformity of the pressing feeling of the touch pad 100 throughout, the plurality of elastic members 4 are axisymmetrically distributed with respect to the trigger member 3 on a plane perpendicular to the first direction z. And/or the plurality of elastic members 4 are distributed in a central symmetry with respect to the trigger member 3 on a plane perpendicular to the first direction z so that the pressing force can be uniformly dispersed. In other alternative embodiments, the plurality of elastic members 4 may not be symmetrically distributed, and may be configured according to the specific structure of the touch pad 100, which is not limited by the present application. The number and distribution of the elastic elements 4 that can be used are illustrated below in connection with the figures.

As shown in fig. 7a to 9 and fig. 12a to 12b, in one embodiment, the touch circuit board 1 is a rectangular circuit board as a whole, and the chassis 2 is configured as a rectangular chassis corresponding to the touch circuit board 1 as a whole. The length of the touch circuit board 1 in the second direction x is greater than the length of the touch circuit board 1 in the third direction y. The first direction z, the second direction x and the third direction y are perpendicular to each other. Or it may be understood that the second direction x is a length direction of the touch circuit board 1, and the third direction y is a width direction of the touch circuit board 1.

Further, all the elastic members 4 may include a first elastic member 41 and a second elastic member 42 disposed opposite to each other in the second direction x, and a third elastic member 43 and a fourth elastic member 44 disposed opposite to each other in the third direction y, the first elastic member 41 and the second elastic member 42 being disposed axisymmetrically with respect to the trigger member 3, and the third elastic member 43 and the fourth elastic member 44 being disposed axisymmetrically with respect to the trigger member 3. Or it can be understood that the rectangular touch circuit board 1 is axisymmetric in the second direction x and the third direction y, and the plurality of elastic members 4 are axisymmetric in the second direction x and the third direction y, so as to better balance the pressing force acting on the touch circuit board 1 everywhere. In other alternative embodiments, when the touch circuit board 1 is a circular circuit board as a whole, all the elastic members 4 may be distributed in a central symmetry manner with a central axis passing through the center of the circle as a symmetry axis. When the touch circuit board 1 is a circuit board with triangle, trapezoid, irregular shape, etc., the number and distribution modes of the elastic members 4 can be designed according to the shape characteristics of the circuit board, and the application is not limited.

It will be appreciated by those skilled in the art that the specific number of resilient arms 402 in each resilient member 4 is not limited. In one embodiment, since the arm between the supporting portion 401 of the first elastic member 41 and the second elastic member 42 and the center position of the touch circuit board 1 is long, the first elastic member 41 and the second elastic member 42 each have two elastic arms 402 spaced apart in the third direction y, and the pressing force can be smoothly transferred to the center area O1 under the action of the first elastic arm 402 or the second elastic arm 402 when pressing both side edges in the second direction x. Since the arm of force between the supporting portion 401 of the third elastic member 43 and the fourth elastic member 44 and the center position of the touch circuit board 1 is short, one elastic arm 402 is provided in the third elastic member 43 and the fourth elastic member 44, and the pressing is more labor-saving. In other alternative embodiments, one or more than two elastic arms 402 may be disposed in the first elastic member 41 and the second elastic member 42, and one or more than one elastic arm 402 may be disposed in the third elastic member 43 and the fourth elastic member 44, which is not limited in this regard.

As shown in fig. 7b and fig. 12 a-12 b, for convenience of understanding, a projection of each elastic member 4 on the touch circuit board 1 along the first direction z is illustrated in fig. 7b by a dashed frame. In one embodiment, the two elastic arms 402 of the first elastic member 41 and the two elastic arms 402 of the second elastic member 42 are each distributed axisymmetrically about a first axis p extending in the second direction x and passing through the center of the trigger member 3. The elastic arms 402 of the third elastic member 43 and the elastic arms 402 of the fourth elastic member 44 are located on a second axis q, which extends in the third direction y and passes through the center of the trigger 3. In one example, the center of the trigger 3 may be the center of the rectangular touch circuit board 1 (or may be offset from the center of the rectangular touch circuit board 1), which may be understood as the intersection of two diagonal lines. In other alternative embodiments, the first axis p and the second axis q may not pass through the center of the trigger 3, and may be offset from the center of the trigger 3, for example, and the present application is not limited thereto.

In one embodiment, the support portion 401 of the first elastic member 41 is disposed axisymmetrically with respect to the first axis p, and the support portion 401 of the second elastic member 42 is disposed axisymmetrically with respect to the first axis p. The support portion 401 of the third elastic member 43 is disposed axisymmetrically with respect to the second axis q, and the support portion 401 of the fourth elastic member 44 is disposed axisymmetrically with respect to the second axis q. Or it may be understood that the overall structures of the first elastic member 41 and the second elastic member 42 including the supporting portion 401 and the elastic arm 402 are all axisymmetrically disposed about the first axis p, and the overall structures of the third elastic member 43 and the fourth elastic member 44 including the supporting portion 401 and the elastic arm 402 are all axisymmetrically disposed about the second axis q, so as to further enhance the uniformity of pressing feeling of the touch pad 100 around.

The size and specific position of each support portion 401 are not limited. The larger the area of the support portion 401 as a whole, the better the smaller the distance between the support portion 401 of the first elastic member 41 and the edge lines of the two ends of the touch circuit board 1 in the second direction x, and the smaller the distance between the support portion 401 of the third elastic member 43 and the edge lines of the two ends of the support portion 401 of the fourth elastic member 44 and the touch circuit board 1 in the third direction y, the better the distance between the support portion 401 of the first elastic member 41 and the edge lines of the two ends of the touch circuit board 1.

It will be appreciated by those skilled in the art that the shape of the two resilient arms 402 in each of the first resilient member 41 and the second resilient member 42 is not limited and that the shape of the two resilient arms 402 may be the same or different.

As shown in fig. 12b, in one embodiment, each of the two elastic arms 402 is configured as a linear bar-shaped structure, and the distance between the two elastic arms 402 is the same from the first end 4021 to the second end 4022. Or it can be appreciated that the two resilient arms 402 are parallel to each other. As shown in fig. 14a, in one embodiment, each of the two elastic arms 402 is configured in a linear bar-like structure, and the distance between the two elastic arms 402 gradually decreases from the first end 4021 to the second end 4022. It may be understood that the projection of the two elastic arms 402 on the touch circuit board 1 along the first direction z forms a trapezoid structure, and the upper bottom of the trapezoid is a connection line between the second ends 4022 of the two elastic arms 402. As shown in fig. 14b, in one embodiment, each of the two elastic arms 402 is configured as an arc-shaped bar structure, the first ends 4021 of the two elastic arms 402 are connected, and the distance between the two elastic arms 402 gradually increases from the first end 4021 to the second end 4022, so that the two elastic arms 402 form a semi-elliptical bar structure. In other alternative embodiments, the two elastic arms 402 of the first elastic member 41 and the second elastic member 42 may have other structures, such as that the distance between the two elastic arms 402 from the first end 4021 to the second end 4022 is kept constant and then gradually increases, which is not further described in the present application.

It will be appreciated by those skilled in the art that the elastic member 4 may be mounted on the base plate 2 by welding, screwing, or the like, or may be integrally formed with the base plate 2. In one embodiment, each elastic member 4 and the bottom plate 2 are integrally formed, so that the production process and the installation process of the touch panel 100 are simplified, and a smaller gap is reserved between the touch circuit board 1 and the bottom plate 2 under the condition of ensuring the same pressing stroke as the existing scheme.

It will be appreciated by those skilled in the art that the particular structure of the base plate 2 is not limited and that it may take on the following structure is illustrated in connection with fig. 12 a-12 b.

As shown in fig. 12 a-12 b, in one embodiment, the base plate 2 may include an outer rim 21, a central portion 22, and a connection portion 23, the outer rim 21 surrounding an outer peripheral side of the central portion 22, the connection portion 23 being connected between the outer rim 21 and the central portion 22, the second end 4022 of each elastic arm 402 being connected to an outer peripheral edge of the central portion 22. A plurality of hollowed-out portions 24 are formed between the outer frame 21, the central portion 22 and the connecting portion 23 in a surrounding mode, the hollowed-out portions 24 are in one-to-one correspondence with the elastic pieces 4, and each elastic piece 4 is stacked with the corresponding hollowed-out portion 24 in the first direction z. Or it can be understood that the projection of each elastic member 4 on the bottom plate 2 along the first direction z falls into the corresponding hollow portion 24. With this structure, when the base plate 2 is processed, only the plate needs to be cut, and then the cut part is bent to form the corresponding elastic member 4 and the hollow portion 24. The specific number of the hollowed-out portions 24 is not limited and may correspond to the number of the elastic members 4. In one embodiment, the touch pad 100 includes 4 elastic members 4, and 4 hollowed portions 24 are correspondingly disposed on the bottom plate 2.

In one embodiment, the touch pad 100 further includes an actuating member 221 disposed on the central portion 22, and when the touch circuit board 1 moves toward the base plate 2 along the first direction z, the actuating member 221 can press the trigger member 3 so that the trigger member 3 is triggered. Or it can be understood that when the touch pad 100 receives a press, the trigger 3 moves toward the base plate 2 and is pressed by the base plate 2, and the operation member 221 serves to provide a pressing force to press the trigger terminal of the trigger 3. It will be appreciated by those skilled in the art that the specific structure of the actuating member 221 is not limited, and for example, it may be a protrusion provided on the central portion 22 of the base plate 2, or the central portion 22 itself may be used as the actuating member 221, or the like.

As shown in fig. 8-9, 11-1 (a) to 11-2 (D), and 13a to 13b, in one embodiment, the operation member 221 is provided with a buffer member 222, the buffer member 222 is located between the operation member 221 and the trigger member 3 in the first direction z, when the touch circuit board 1 moves toward the base plate 2 along the first direction z, the trigger member 3 abuts against the buffer member 222, and the buffer member 222 is used for buffering the impact force of the trigger member 3, so as to prevent the two rigid bodies from directly contacting to damage the trigger member 3 or the base plate 2. The material of the trigger 3 is not limited, and may be, for example, a flexible material such as rubber or foam.

Referring to fig. 15, fig. 15 is a schematic diagram illustrating the cooperation between a bottom plate and a touch circuit board in a touch panel according to an embodiment of the application.

As shown in fig. 12 a-12 b and 15, in one embodiment, the touch pad 100 may further include a plurality of first limiting portions 25, where each first limiting portion 25 is fixedly connected to the base 2 and disposed on a side of the base 2 near the touch circuit board 1. When the touch circuit board 1 moves towards the bottom plate 2 along the first direction z, at least one first limiting portion 25 of the plurality of first limiting portions 25 may abut against the touch circuit board 1 to limit displacement of the touch circuit board 1 towards the bottom plate 2, so as to prevent the touch circuit board 1 from being excessively pressed by a user, and damage to the touch panel 100.

The specific number and positions of the first limiting portions 25 are not limited, and in one embodiment, the plurality of first limiting portions 25 are axisymmetrically distributed on a plane perpendicular to the first direction z, and/or the plurality of first limiting portions 25 are centrosymmetrically distributed on a plane perpendicular to the first direction z, which may be specifically designed according to the shape of the touch pad 100. Further, since the outer peripheral region O2 of the touch panel 1 is more likely to be excessively pressed against the central region O1, the first stopper portions 25 are laminated on the outer peripheral region O2 of the touch panel 1 in the first direction z. As shown in fig. 12b, in one example, the touch pad 100 is a rectangular touch pad (i.e. the touch circuit board 1 and the bottom board 2 are both rectangular structures), and the first limiting portions 25 are respectively disposed at positions on the bottom board 2 corresponding to the 4 corners of the touch circuit board 1, so as to enhance the limiting effect on the movement stroke of the touch circuit board 1.

Referring to fig. 16 a-16 c, fig. 16 a-16 c are schematic structural diagrams of a touch pad belt housing according to an embodiment of the application.

16 a-16 c, in one embodiment, the touch pad 100 may further include a housing 6. The housing 6 may be a separate housing 6 of the touch pad 100, or the housing structure of the electronic device 200 may be multiplexed as the housing 6 of the touch pad 100.

An accommodating space (not shown in the drawing) is formed in the housing 6, the bottom plate 2 is mounted to the housing 6, and the touch circuit board 1, the bottom plate 2, the cover plate 51 and the elastic members 4 are all located in the accommodating space. Also, the surface of the touch circuit board 1 facing away from the bottom plate 2 in the first direction z is not covered by the housing 6. Or it may be understood that the projection of the housing 6 on the touch circuit board 1 along the first direction z does not overlap or only partially overlaps the touch surface 11 of the touch circuit board 1, so that the user can touch the touch surface 11 of the touch circuit board 1 directly or indirectly through the cover plate 51. It will be appreciated by those skilled in the art that the specific structure of the housing 6 is not limited, and in one embodiment, the housing 6 adopts a hollow frame structure, and the touch circuit board 1, the bottom plate 2, the cover plate 51 and each elastic member 4 are located in an outer frame of the frame structure.

The mounting manner of the base plate 2 and the housing 6 is not limited, and for example, a mounting structure such as a mounting table or a mounting column may be provided on the housing 6, and the base plate 2 may be fixed to the housing 6 by a fixing screw.

Referring to fig. 17 a-17 c, fig. 17 a-17 c are schematic diagrams illustrating the cooperation between the housing and the touch circuit board in the touch panel according to the embodiment of the application, wherein fig. 17c is a partially enlarged view of a portion G in fig. 17 b.

As shown in fig. 7 a-7 b and 17 a-17 c, in one embodiment, a plurality of second limiting portions 13 protruding outwards are disposed at intervals on the outer peripheral side of the touch circuit board 1, and each second limiting portion 13 may abut against the housing 6 to limit displacement of the touch circuit board 1 where each second limiting portion 13 is located in a direction moving away from the bottom plate 2.

Because the elastic piece 4 and the touch circuit board 1 can integrally form a lever structure, the elastic piece 4 can form a fulcrum of the lever structure, when the edge or the corner of one side of the touch circuit board 1 is pressed, the other side part of the touch circuit board 1 opposite to the pressing position is easy to tilt, and the second limiting part 13 is abutted with the shell 6, so that the corresponding part of the touch circuit board 1 can be limited to move towards the direction deviating from the bottom plate 2, and part of the structure is prevented from tilting upwards. For example, when the right edge of the touch circuit board 1 in fig. 8 to 9 is pressed, the left edge thereof is easy to tilt upward, and moves in a direction away from the bottom plate 2, and the second limiting portion 13 located at the left edge abuts against the housing 6, so that the left edge can be limited to tilt upward.

The specific number and distribution positions of the second limiting portions 13 are not limited. As shown in fig. 7 a-7 b and 17b, in one embodiment, 4 second limiting portions 13 are disposed on the touch circuit board 1, and the 4 second limiting portions 13 are uniformly distributed on the edge of the touch circuit board 1 in an axisymmetric manner with respect to the first axis p and the second axis q. In other alternative embodiments, fewer or more than 4 second limiting portions 13 may be provided, and each second limiting portion 13 may be distributed at each position of the touch circuit board 1, which is not limited in the present application.

The structure of the touch pad 100 is illustrated above, and it should be noted that the structure illustrated in the embodiment of the application is not limited to the specific structure of the touch pad 100. In other embodiments of the present application, the touch pad 100 may include more or fewer components than shown.

In addition, in order to fully demonstrate the lifting effect of the touch pad 100 on the pressing hand feel provided in the embodiment of the present application, the pressing force of the touch pad 100 is simulated everywhere, and the following details of the testing process and conclusion are presented with reference to the accompanying drawings.

Referring to fig. 18-21, fig. 18 is a schematic diagram showing a change of resilience force of the pressing touch pad along with displacement of the touch circuit board according to an embodiment of the present application; FIG. 19 is a schematic diagram illustrating a position distribution of each measurement point in the touch pad according to an embodiment of the present application; FIG. 20 is a graph showing the change of the maximum resilience force in the resilience curve of each measurement point of the touch pad according to the embodiment of the application; FIG. 21 is a graph showing a change in a sectional sense of each measurement point of a touch pad according to an embodiment of the present application.

Fig. 18 shows a graph of the resilience force F of the touch pad 100 (including the resilience force of the trigger member 3 and the resilience force of the elastic member 4) according to the displacement s of the pressing touch circuit board 1 when the touch pad 100 is pressed in the embodiment of the application. As the displacement s of the touch circuit board 1 increases, the whole resilience force F of the touch circuit board 100 tends to rise first and then fall and then rise, and when the resilience force F rises to the first peak value a, the trigger piece 3 is triggered, so as to generate a trigger signal. The resilience force is reduced after the peak point a and falls to the first valley point b, and the user can feel obvious paragraph sense between the point a and the point b, so that the completion of clicking operation is confirmed. After point b, the touch pad 100 is continuously pressed, and the resilience force F of the trigger 3 is continuously increased until the distance between the touch circuit board 1 and the bottom plate 2 reaches the minimum value.

As shown in fig. 19, a total of 15 measuring points 1 to 15 are uniformly disposed on the touch pad 100, and the 15 measuring points are axisymmetrically distributed with respect to the first axis p and the second axis q and are distributed in the central area O1 and the peripheral area O2 of the touch circuit board 1. Applying pressure to 15 measuring points respectively, and simultaneously recording the whole resilience Force of the touch control board 100 in real time by using an instrument (for example, a measuring instrument such as Force gauge) to obtain a curve of the whole resilience Force of the touch control board 100 along with the change of the displacement s of the touch control circuit board 1 at the position of each measuring point, wherein the curve is similar to the curve in fig. 18, and the trigger piece 3 can be triggered and generate a section sense when each measuring point is pressed.

As shown in fig. 20, the touch pad shown in fig. 3 is tested by the same method, so as to obtain a graph of resilience force of the touch pad 100 provided by the present application and the touch pad shown in fig. 3 when each measurement point trigger piece is pressed. The resilience of the touch pad when the trigger piece is triggered is the magnitude of resilience force F1 corresponding to the first peak "a" (refer to fig. 18) in the resilience curve of each measuring point. As can be seen from fig. 20, the point with the largest elastic force F1 of the touch pad in fig. 3 is the point 8, which corresponds to the point with 225g/F elastic force, the point with the smallest elastic force F1 is the point 1, which corresponds to the point with 135g/F elastic force, and the difference between them is 90g/F. The maximum elastic force F1 of the touch pad 100 provided by the application is measured point 8, the corresponding elastic force is 182g/F, the minimum elastic force F1 is measured point 1, the corresponding elastic force is 108g/F, and the difference value of the two is 74g/F. The smaller the difference, the more uniform the pressing hand feel of the touch pad is, the above-mentioned difference of resilience of the touch pad 100 of the present application is reduced by 17.8% compared with the touch pad in fig. 3, and the more uniform the pressing hand feel of the touch pad 100 provided by the present application is.

As shown in fig. 21, fig. 21 is a graph showing the paragraph sense when each measurement point is pressed and the trigger piece is triggered in the touch pad 100 provided by the present application and the touch pad shown in fig. 3. As will be understood from fig. 18, in the resilience graph of each measuring point, the difference F1-F2 between the resilience force F1 corresponding to the peak "a point" and the resilience force F2 corresponding to the valley "b point" is denoted as t, and the specific expression of "paragraph sense" is as follows: the ratio of t to the return force F1 corresponding to the peak "a point" is denoted as t/F1, i.e., (F1-F2)/F1. It should be noted that the larger the above ratio is, the stronger the paragraph feeling is, and the better the hand feeling is. As can be seen from fig. 21, compared with the touch pad shown in fig. 3, the section sense of 1-15 measuring points in the touch pad 100 provided by the application is improved, the hand feel feedback of each measuring point reaches more than 20%, and the section sense of the whole touch pad 100 is improved by 25% compared with the touch pad shown in fig. 3, so that the touch pad has better hand feel.

In summary, the touch pad 100 provided by the application has more uniform pressing feeling and better paragraph feeling.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present application without departing from the spirit or scope of the application. Thus, it is intended that the present application also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims

1. The touch control board is characterized by also comprising a plurality of elastic pieces, wherein the elastic pieces are arranged between the touch control circuit board and the bottom plate in the first direction and are distributed around the periphery of the triggering piece on a plane perpendicular to the first direction;

each elastic piece in the plurality of elastic pieces comprises a supporting part and at least one elastic arm, the supporting part is fixedly connected to the touch circuit board, each elastic arm in the at least one elastic arm is provided with a first end connected with the supporting part and a second end connected with the bottom plate, and each elastic arm extends along a direction inclined relative to the first direction;

Wherein, each elastic arm can generate elastic deformation and generate resilience force under the action of pressing force.

2. The touch pad of claim 1, wherein each of the resilient arms in each of the resilient members extends from the first end to the second end in a direction away from the support portion in a plane perpendicular to the first direction.

3. The touch pad of claim 2, wherein in each of the elastic members, the first end of each of the elastic arms is connected to an outer edge of the supporting portion toward the triggering member, and each of the elastic arms is entirely located between the supporting portion and the triggering member on a plane perpendicular to the first direction.

4. The touch pad of claim 3, wherein the supporting portions of the plurality of elastic members extend along a plane perpendicular to the first direction and are attached to an outer peripheral region of the touch pad.

5. The touch pad of claim 1, wherein each of the support portions is provided in a sheet-like structure and each of the elastic arms is provided in a bar-like structure.

6. The touch pad of claim 5, wherein each of the resilient arms is integrally configured to: linear, arcuate, curved or dog-leg bar structure;

Alternatively, each of the resilient arms is arranged to: at least two of the linear bar-shaped structure, the arc-shaped bar-shaped structure, the curved bar-shaped structure and the broken line-shaped bar-shaped structure are combined.

7. The touch pad of claim 1, wherein the plurality of elastic members are axisymmetrically distributed with respect to the trigger member on a plane perpendicular to the first direction;

and/or the plurality of elastic pieces are distributed in a central symmetry manner relative to the trigger piece on a plane perpendicular to the first direction.

8. The touch pad of claim 7, wherein the plurality of elastic members includes first and second elastic members disposed opposite each other in a second direction, and third and fourth elastic members disposed opposite each other in a third direction, the first and second elastic members being disposed axisymmetrically with respect to the trigger member, the third and fourth elastic members being disposed axisymmetrically with respect to the trigger member; the first direction, the second direction and the third direction are perpendicular to each other.

9. The touch pad of claim 8, wherein a length of the touch pad in the second direction is greater than a length of the touch pad in the third direction, the at least one of the first elastic member and the second elastic member is two elastic arms disposed at intervals in the third direction, and the at least one of the third elastic member and the fourth elastic member is one elastic arm.

10. The touch pad of claim 9, wherein the two elastic arms of the first elastic member and the two elastic arms of the second elastic member are each axisymmetrically distributed about a first axis extending in the second direction and passing through the trigger center;

the elastic arms of the third elastic piece and the elastic arms of the fourth elastic piece are located on a second axis, and the second axis extends along the third direction and passes through the center of the trigger piece.

11. The touch pad of claim 10, wherein the support portion of the first elastic member is disposed axisymmetrically with respect to the first axis, and the support portion of the second elastic member is disposed axisymmetrically with respect to the first axis;

the supporting portion of the third elastic member is axially symmetrically arranged relative to the second axis, and the supporting portion of the fourth elastic member is axially symmetrically arranged relative to the second axis.

12. The touch pad of claim 9, wherein in each of the first elastic member and the second elastic member:

each elastic arm of the two elastic arms is arranged in a linear strip-shaped structure, and the distance between the two elastic arms is gradually reduced or the same from the first end to the second end; or,

Each elastic arm in the two elastic arms is arranged into an arc-shaped strip-shaped structure, the first ends of the two elastic arms are connected, and the distance between the two elastic arms is gradually increased from the first end to the second end, so that the two elastic arms form a semi-elliptic strip-shaped structure.

13. The touch pad of any one of claims 1-12, wherein the bottom plate includes an outer rim, a central portion, and a connection portion, the outer rim surrounding an outer peripheral side of the central portion, the connection portion being connected between the outer rim and the central portion, the second end of each of the resilient arms being connected to an outer periphery of the central portion;

the outer frame, the center portion and the connecting portion are surrounded to form a plurality of hollowed-out portions, the hollowed-out portions are in one-to-one correspondence with the elastic pieces, and the elastic pieces are stacked with the corresponding hollowed-out portions in the first direction.

14. The touch pad of claim 13, further comprising a bumper disposed on the central portion, the bumper on the central portion being capable of pressing the trigger member when the touch circuit board is moved in the first direction toward the bottom plate such that the trigger member is triggered.

15. The touch pad of any of claims 1-12, wherein the plurality of resilient members are integrally formed as one piece with the base plate.

16. The touch pad of any one of claims 1-12, further comprising a plurality of first limiting portions, each of the plurality of first limiting portions being fixedly connected to the base plate and disposed on a side of the base plate adjacent to the touch circuit board;

when the touch control circuit board moves towards the bottom plate along the first direction, at least one first limiting part of the first limiting parts can be abutted with the touch control circuit board so as to limit the displacement of the touch control circuit board moving towards the bottom plate.

17. The touch pad of claim 16, wherein the plurality of first limiting portions are axisymmetrically distributed on a plane perpendicular to the first direction, and/or the plurality of first limiting portions are centrosymmetrically distributed on a plane perpendicular to the first direction; and each first limiting part is laminated with the peripheral area of the touch circuit board along the first direction.

18. The touch pad of any one of claims 1-12, further comprising a housing having an accommodation space formed therein, the chassis being mounted to the housing, and the touch circuit board, the chassis, and the plurality of elastic members being located in the accommodation space, and a surface of the touch circuit board facing away from the chassis in the first direction being uncovered by the housing;

A plurality of second limiting parts extending outwards are arranged on the outer peripheral side of the touch control circuit board at intervals, and each second limiting part in the plurality of second limiting parts can be abutted with the shell so as to limit the displacement of the touch control circuit board at the position of each second limiting part in a direction away from the bottom plate.

19. An electronic device comprising a touch pad according to any one of claims 1-18.