Touch panel and electronic equipment

Abstract

The utility model discloses a touchpad and electronic equipment, the touchpad comprises a support plate, a reinforcing plate, a circuit board and a switch unit, the support plate, the reinforcing plate and the circuit board are laminated in sequence, the reinforcing plate is fixedly connected with the circuit board, one side of the circuit board facing the support plate is provided with a first conductive part, and the first conductive part is provided with a second conductive part. At least parts of the reinforcing plate and the circuit board corresponding to the first conductive part are bent towards the supporting plate. The switch unit is arranged corresponding to the first conductive part and is located on one side, facing the supporting plate, of the circuit board, and the switch unit is configured to be electrically conducted with the first conductive part under the action of the supporting plate when the circuit board is pressed. According to the touchpad, the reaction of the supporting plate on the switch unit can be directly and intensively transmitted to a user, and the pressing hand feeling of the touchpad can be improved. The electronic equipment is provided with the touch panel and also has the same technical effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of touch control, in particular to a touchpad and electronic equipment. BACKGROUND

[0002] Notebooks are favored by a large number of users due to their portability. In a notebook, a touchpad is used to replace a traditional mouse for control. The pressing operation of a user on the touchpad is usually fed back by a pressing feeling. Therefore, a good pressing feeling of the touchpad is very important for improving the user experience.

[0003] The touchpad can be divided into a full-domain touchpad and a half-domain touchpad according to different pressing control ranges. In the half-domain touchpad, only one side of a DOME key (metal dome, thin film switch) can realize a key function and good pressing feedback. However, the middle region is far away from the DOME key, and the pressing feedback of the touchpad is difficult to be transmitted to the corresponding position, resulting in poor pressing feedback or even almost no pressing feedback, which seriously affects the user experience. UTILITY MODEL CONTENT

[0004] The present application discloses a touchpad and electronic equipment, which can improve the pressing feeling of the touchpad, thereby improving the user experience of using the electronic equipment with the touchpad.

[0005] In a first aspect, the present application discloses a touchpad, comprising:

[0006] a support plate;

[0007] a reinforcing plate, which is arranged in layers with the support plate;

[0008] a circuit board, which is arranged in layers with the reinforcing plate and is fixedly connected to one side of the reinforcing plate away from the support plate, one side of the circuit board facing the support plate is provided with a first conductive part, and at least a part of the circuit board and the support plate corresponding to the first conductive part is configured to be curved toward the support plate in the thickness direction of the support plate;

[0009] a switch unit, which is arranged corresponding to the first conductive part and is located on the side of the circuit board connected to the support plate, and the switch unit is configured to be electrically connected with the first conductive part under the action of the support plate when the circuit board is pressed.

[0010] By bending the circuit board and the reinforcing plate towards the support plate at least corresponding to the part of the first conductive part, and setting the switch unit at the position of the circuit board corresponding to the first conductive part, the distance between the switch unit and the support plate can be reduced, the transmission path of the rebound force of the touchpad when the user presses the touchpad can be reduced, and the force transmission area can be more concentrated. After the switch unit and the support plate abut, the effect of the support plate on the switch unit can be more directly and more concentratedly transmitted to the user, improving the pressing feeling of the touchpad. At the same time, the switch unit is deformed under the action of the support plate, thereby being electrically connected with the first conductive part, so that the circuit board is turned on, and the touchpad works normally.

[0011] In a possible implementation, a cross section of the reinforcing plate and the circuit board perpendicular to the first direction is configured to be bent towards the support plate, and the distance between the opposite sides of the reinforcing plate and the circuit board and the support plate increases in a direction away from the geometric center of the reinforcing plate and the circuit board; wherein the first direction is perpendicular to the thickness direction.

[0012] By setting the reinforcing plate and the circuit board to be bent as a whole, the reinforcing plate and the circuit board only need to be bent and shaped before being assembled into the touchpad, so that the manufacturing process of the touchpad is simpler and the manufacturing difficulty is lower.

[0013] In a possible implementation, the touchpad further includes a retaining member, which is arranged between the reinforcing plate and the circuit board, and is used to connect the reinforcing plate and the circuit board and keep the reinforcing plate and the circuit board in a bent state towards the support plate.

[0014] By connecting the reinforcing plate and the circuit board by the retaining member, the reinforcing plate and the circuit board can be kept in a bent state, thereby prolonging the duration of the high pressing feedback effect of the touchpad.

[0015] In a possible implementation, the retaining member is a rigid member, and the retaining member is bent towards the support plate along the thickness direction.

[0016] The retaining member is set to be a rigid member and is bent towards the support plate along the thickness direction, so that the reinforcing plate and the circuit board can be supported by the retaining member, and the retaining member does not deform because it is a rigid member, so that the reinforcing plate and the circuit board can be kept in a bent state, and rebounding or protruding of the reinforcing plate and the circuit board relative to the support plate can be avoided.

[0017] In one possible implementation, the touchpad further comprises a connecting layer, the connecting layer is arranged between the reinforcing plate and the circuit board, the reinforcing plate and the circuit board are connected through the connecting layer, the connecting layer is provided with a first through hole, and the retaining member is arranged around the edge of the first through hole.

[0018] By arranging the first through hole on the connecting layer and connecting the reinforcing plate and the circuit board at the position corresponding to the first through hole, the thickness of the part of the connecting layer corresponding to the middle part of the circuit board can avoid affecting the bending state of the circuit board, and the thickness of the part of the connecting layer other than the first through hole can support the circuit board to a certain extent, thereby increasing the deformation amplitude of the circuit board in the range corresponding to the first through hole. At the same time, the first through hole is arranged on the connecting layer, which also helps to reduce the weight of the touchpad. The retaining member is arranged around the edge of the first through hole, which can increase the connection point position and prevent local deformation of the middle part of the circuit board, and better maintain the bending state of the circuit board.

[0019] In one possible implementation, the connecting layer is further provided with a plurality of second through holes located on opposite sides of the first through hole, and the reinforcing plate is provided with the retaining member around the edge corresponding to the plurality of second through holes.

[0020] By arranging the second through hole on the opposite sides of the first through hole respectively and arranging the retaining member on the reinforcing plate corresponding to the second through hole to connect the reinforcing plate and the circuit board, the connection point position between the reinforcing plate and the circuit board can be increased, stress concentration can be avoided, and local deformation of the middle part of the circuit board can be prevented, so that the middle part of the circuit board maintains a stable bending state.

[0021] In one possible implementation, the retaining member is a plurality of retaining members, and the plurality of retaining members are arranged at intervals along the extension direction of the bending section of the circuit board perpendicular to the first direction.

[0022] The retaining member is arranged as a plurality of retaining members, and the plurality of retaining members are arranged at intervals along the extension direction of the bending section of the circuit board, so that the retaining member can uniformly apply force to multiple positions of the circuit board along the extension direction of the bending of the circuit board, so that the bending deformation of the circuit board is more stable.

[0023] In one possible implementation, the touchpad further comprises a gasket, the support plate is provided with an elastic portion at a position corresponding to the switch unit, and the gasket is arranged on the elastic portion and located between the elastic portion and the switch unit.

[0024] The gasket is arranged between the elastic part of the support plate and the switch unit, and the switch unit is supported by the gasket, so that the switch unit can be kept in a contact state, thereby ensuring that the switch unit can realize switching when the touchpad is pressed, and the switch unit can be prevented from being damaged due to the rigid extrusion of the support plate and the friction between the switch unit and the support plate.

[0025] In a possible implementation, the touchpad further comprises a conductive elastic member, which is arranged in a spaced manner with the elastic part, and is clamped between the circuit board and the support plate.

[0026] The circuit board is provided with a second conductive part facing the support plate, and the second conductive part is arranged in a corresponding manner with the conductive elastic member, and the conductive elastic member is used to electrically connect the second conductive part with an external circuit.

[0027] The elastic conductive member is arranged between the support plate and the circuit board, and is arranged in a spaced manner with the switch unit, and is used to electrically connect the circuit board with an external circuit, and the elastic conductive member is in a compressed state. When the user presses the touchpad, the side of the circuit board that is not pressed is raised, and the elastic conductive member can restore to its original state under the action of the elastic force, so that the circuit board and the external circuit are kept in electrical connection.

[0028] In a second aspect, the application discloses an electronic device comprising the touchpad of any one of the above.

[0029] Compared with the prior art, the application has at least the following beneficial effects:

[0030] The touchpad disclosed in the application can reduce the distance between the switch unit and the support plate by making the part of the circuit board provided with the first conductive part protrude towards the support plate and arranging the switch unit at the position of the circuit board corresponding to the first conductive part. When the user presses the touchpad, the time for the switch unit to move to abut against the support plate can be reduced. After the switch unit abuts against the support plate, the effect of the support plate on the switch unit can be transmitted to the user in a shorter time. At the same time, the switch unit is deformed due to the effect of the support plate, thereby being electrically connected with the first conductive part, so that the circuit board is turned on, and the touchpad works normally. That is, the touchpad can reduce the pressing feedback time and improve the sensitivity and pressing feeling of the touchpad. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the application, the drawings required to be used in the application will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0032] Figure 1 is a perspective view of a touchpad in an embodiment of the present application;

[0033] Figure 2 is a perspective view of a touchpad in an embodiment of the present application; Figure 1 is a top view of the touchpad shown in FIG. 1;

[0034] Figure 3 is a cross-sectional view of the touchpad shown in FIG. 1 along the A-A' direction; Figure 2 is a cross-sectional view of the touchpad shown in FIG. 1 along the A-A' direction;

[0035] Figure 4 is a cross-sectional view of the touchpad shown in FIG. 1 along the A-A' direction; Figure 3 is an enlarged view of the A region in FIG. 1;

[0036] Figure 5 is a bottom view of a circuit board in an embodiment of the present application; Figure 2 is a bottom view of a circuit board in an embodiment of the present application;

[0037] Figure 6 is a cross-sectional view of the touchpad shown in FIG. 1 along the B-B' direction; Figure 2 is a cross-sectional view of the touchpad shown in FIG. 1 along the B-B' direction;

[0038] Figure 7 is a cross-sectional view of the touchpad shown in FIG. 1 along the B-B' direction; Figure 6 is an enlarged view of the B region in FIG. 1;

[0039] Figure 8 is a cross-sectional view of a circuit board in an embodiment of the present application, in which the cross section of the circuit board is in the shape of a circular arc;

[0040] Figure 9 is a cross-sectional view of a circuit board in an embodiment of the present application, in which the cross section of the circuit board is in the shape of an elliptical arc;

[0041] Figure 10 is a cross-sectional view of a circuit board in an embodiment of the present application, in which the cross section of the circuit board is in the shape of a circular arc and a straight line;

[0042] Figure 11 is a cross-sectional view of a circuit board in an embodiment of the present application, in which the cross section of the circuit board is in the shape of an elliptical arc and a straight line;

[0043] Figure 12 is a perspective view of a support plate in an embodiment of the present application;

[0044] Figure 13 is a cross-sectional view of a touchpad in an embodiment of the present application, in which the touchpad has a gasket;

[0045] Figure 14 is a cross-sectional view of a touchpad in an embodiment of the present application, in which the touchpad has a gasket; Figure 13 is an enlarged view of the C region in FIG. 1;

[0046] Figure 15 is a cross-sectional view of a touchpad in an embodiment of the present application, in which the touchpad has a reinforcing plate and a retaining member;

[0047] Figure 16is a cross-sectional schematic view of a touchpad with a coupling layer in an embodiment of the present application;

[0048] Figure 17 is a cross-sectional schematic view of a coupling layer with a second through hole in an embodiment of the present application;

[0049] Figure 18 is a cross-sectional schematic view of a touchpad with a communication element in an embodiment of the present application;

[0050] Figure 19 is a three-dimensional structural schematic view of a reinforcing plate in an embodiment of the present application;

[0051] Figure 20 is a structural exploded schematic view of a touchpad with a conductive elastic member in an embodiment of the present application;

[0052] Figure 21 is Figure 20 is an enlarged schematic view of a D region in

[0053] Figure 22 is a cross-sectional schematic view of a touchpad with a U-shaped rod support and a U-shaped rod in an embodiment of the present application along the A-A' direction;

[0054] Figure 23 is Figure 22 is an enlarged schematic view of an E region in

[0055] Figure 24 is an assembly schematic view of a U-shaped rod support and a U-shaped rod in an embodiment of the present application;

[0056] Figure 25 is Figure 24 is a three-dimensional structural schematic view of a U-shaped rod support and a U-shaped rod shown in

[0057] Figure 26 is a distribution diagram of touchpad pressing test points provided in the present application;

[0058] Figure 27 is a three-dimensional structural schematic view of an electronic device in an embodiment of the present application.

[0059] Explanation of Reference Signs

[0060] 1, touchpad;

[0061] 11, support plate, 111, elastic portion, 112, main body portion, 113, gasket;

[0062] 12, reinforcing plate, 121, first accommodating groove, 122, second accommodating groove, 123, first avoiding hole;

[0063] 13, circuit board, 131, first conductive portion, 132, middle portion, 133, side portion, 124, second conductive portion;

[0064] 14. Switching unit;

[0065] 15. Retaining member;

[0066] 16. Coupling layer, 161, first through hole, 162, second through hole, 163, second escape hole;

[0067] 17. Communication element;

[0068] 18. Conductive elastic member;

[0069] 191, L-shaped rod holder, 191a, mounting groove, 191b, clamping member, 192, L-shaped rod, 192a, connecting portion, 192b, rod main body portion;

[0070] 2. Electronic device;

[0071] 21. Device main body;

[0072] P1, thickness direction, P2, first direction, P3, second direction. DETAILED DESCRIPTION

[0073] The technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work under the premise that the present application falls within the scope of protection of the present application.

[0074] In the present application, the terms "upper", "inner", "outer", "middle" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0075] In addition, in addition to being used to indicate the orientation or positional relationship, the above-mentioned part of the terms can also be used to indicate other meanings, for example, the term "upper" can also be used to indicate a certain dependent relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meaning of these terms in the present application can be understood according to the specific circumstances.

[0076] In addition, the terms "set with", "connected" should be broadly understood. For example, it can be fixed connection, detachable connection, or integral structure; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate media, or internal communication between two devices, elements or components. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0077] In addition, the terms "first", "second" and the like are mainly used to distinguish different devices, elements or components (the specific type and structure may be the same or different), and are not intended to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise stated, the meaning of "multiple" is two or more.

[0078] The sensitivity, touch range and pressing feeling of the touchpad are the key elements that users focus on. At present, the improvement of the above performance is mainly achieved by changing the sensor type, number, distribution position. For example, by using advanced sensors, increasing the number of sensors, and increasing the distribution points of sensors on the touch plane, the sensitivity and touch range are improved. In the improvement of the pressing feeling, the structure, number and distribution of the elastic components inside the touchpad are mainly adjusted.

[0079] However, in the related design, the settings for improving sensitivity and increasing touch range are not conducive to saving manufacturing costs and improving device integration. In the improvement of the pressing feeling, due to the influence of the structure and distribution of the elastic components on the remaining devices, it is also difficult to make large adjustments. Especially for the half-domain touchpad, the pressing area is only half of the touchpad, at this time, the design of the elastic components inside the touchpad is more limited. It can be found that the current design for improving the sensitivity and touch feeling of the touchpad often involves the adjustment of multiple components, which is usually more complex and difficult to improve.

[0080] Therefore, how to improve the sensitivity and pressing feeling of the touchpad at low cost is a technical problem that needs to be overcome in the field.

[0081] To solve the above technical problems, the application provides a touchpad, which can reduce the distance between the switch unit and the support plate by making the part of the circuit board provided with the first conductive part protrude towards the support plate and arranging the switch unit at the position of the circuit board corresponding to the first conductive part, can reduce the time for the switch unit to move to abut against the support plate when the user presses the touchpad, and can transmit the effect of the support plate on the switch unit to the user in a short time after the switch unit abuts against the touchpad, while the switch unit is deformed under the effect of the support plate to be electrically connected with the first conductive part, so that the circuit board is turned on, and the touchpad works normally. That is, the use of the touchpad can reduce the pressing feedback time and improve the sensitivity and pressing feeling of the touchpad.

[0082] In the first aspect, the embodiments of the application provide a touchpad 1, when the electronic device is provided with the touchpad 1, the user can touch the touchpad 1 with the finger, and move the indication mark (such as a cursor) in the display device of the electronic device by sliding the finger. When the user moves the indication mark to the expected position, the user can press the touchpad 1 to apply a preset operation instruction to the electronic device, so that the electronic device completes the corresponding operation.

[0083] Please refer to Figures 1 to 7 , wherein Figure 1 is a schematic diagram of the three-dimensional structure of the touchpad in the embodiments of the application, Figure 2 is Figure 1 a schematic diagram of the touchpad shown in FIG. 1, Figure 3 is Figure 2 a schematic diagram of the cross section of the touchpad along the A-A' direction shown in FIG. 2, Figure 4 is Figure 3 an enlarged schematic diagram of the A area in FIG. 3, Figure 5 is Figure 2 a schematic diagram of the bottom view of the circuit board shown in FIG. 4, Figure 6 is Figure 2 a schematic diagram of the cross section of the touchpad along the B-B' direction shown in FIG. 5, Figure 7 is Figure 6 an enlarged schematic diagram of the B area in FIG. 6.

[0084] The touchpad 1 comprises a support plate 11, a reinforcing plate 12, a circuit board 13 and a switch unit 14. The support plate 11 and the reinforcing plate 12 are arranged in layers, the circuit board 13 is arranged in layers with the reinforcing plate 12, and is located on the side of the reinforcing plate 12 away from the support plate 11.

[0085] The first conductive part 131 is arranged on the side of the circuit board 13 facing the support plate 11, and the reinforcing plate 12 and the circuit board 13 are bent towards the support plate 11 along the thickness direction P1 of the support plate 11 at least at the part corresponding to the first conductive part 131. The switch unit 14 is arranged corresponding to the first conductive part 131 and located on the side of the circuit board 13 facing the support plate 11. The switch unit 14 is configured to be electrically connected with the first conductive part 131 by being pressed by the support plate 11 when the circuit board 13 is pressed.

[0086] By bending the reinforcing plate 12 and the circuit board 13 towards the support plate 11 at least at the part corresponding to the first conductive part 131, and arranging the switch unit 14 at the position of the circuit board 13 corresponding to the first conductive part 131, the distance between the switch unit 14 and the support plate 11 can be reduced, and the transmission path of the rebound force of the touchpad 1 when the user presses the touchpad 1 can be reduced, and the transmission area of the force is more concentrated. After the switch unit 14 is in abutment with the support plate 11, the effect of the support plate 11 on the switch unit 14 can be more directly and more concentratedly transmitted to the user, improving the pressing feeling of the touchpad 1. At the same time, the switch unit 14 is deformed by the effect of the support plate 11, thereby being electrically connected with the first conductive part 131, so that the circuit board 13 is turned on, and the touchpad 1 works normally.

[0087] It can be understood that when the user presses the touchpad 1, the reinforcing plate 12 and the circuit board 13 are further deformed and recessed towards the support plate 11 by the pressing of the user, so that the switch unit 14 is in abutment with the support plate 11. At the same time, the support plate 11 exerts an effect on the switch unit 14, so that the switch unit 14 is deformed towards the circuit board 13, thereby making the switch unit 14 contact the first conductive part 131, realizing the electrical connection between the switch unit 14 and the first conductive part 131. In this way, the circuit board 13 can be turned on, and the touchpad 1 can send corresponding control signals to the remaining devices / apparatuses of the electronic device. Since the part of the circuit board 13 provided with the first conductive part 131 protrudes towards the support plate 11, the distance between the switch unit 14 and the support plate 11 is reduced, and when the user presses the touchpad 1, the circuit board 13 can be in abutment with the support plate 11, and the reaction force of the support plate 11 generated by the pressing can be more quickly and more concentratedly transmitted to the user, improving the pressing feeling.

[0088] In some embodiments, the switch unit 14 can be a metal dome, dome array, or dome sheet. Compared with traditional silica gel keys, the metal dome has better pressing feeling and longer service life, and can also improve the production efficiency of various types of switches using conductive film.

[0089] Please see Figures 8 to 11 , Figure 8is a cross-sectional view of the circuit board in the embodiment of the present application, in which the cross section of the circuit board is in a circular arc shape, Figure 9 is a cross-sectional view of the circuit board in the embodiment of the present application, in which the cross section of the circuit board is in an elliptical arc shape, Figure 10 is a cross-sectional view of the circuit board in the embodiment of the present application, in which the cross section of the circuit board is in a combination of a circular arc shape and a straight line shape, Figure 11 is a cross-sectional view of the circuit board in the embodiment of the present application, in which the cross section of the circuit board is in a combination of an elliptical arc shape and a straight line shape.

[0090] In some embodiments, the cross section of the reinforcing plate 12 and the circuit board 13 perpendicular to the first direction P2 is configured to be curved towards the support plate 11, and the distance between the opposite sides of the reinforcing plate 12 and the circuit board 13 and the support plate 11 increases in a direction away from the geometric center of the support plate 11.

[0091] In some embodiments, the first direction P2 is perpendicular to the thickness direction P1 of the support plate 11. For example, if the touch plate 1 is rectangular, the first direction P2 can be the short side direction of the rectangle.

[0092] It can be understood that the circuit board 13 can be divided into a middle part 132 and side parts 133 located on the opposite sides of the middle part 132. The middle part 132 is curved towards the support plate 11, and the first conductive part 131 is arranged on the middle part 132. It should be noted that the two side parts 133 extend in a direction away from each other on the opposite sides of the middle part 132, and at the same time extend in a direction away from the support plate 11.

[0093] Optionally, taking the arrangement direction of the side part 133-middle part 132-side part 133 as the first direction P2, the cross-sectional shape of the circuit board 13 along the first direction P2 can be a circular arc shape, an elliptical arc shape, a combination of a circular arc shape and a straight line shape, or a combination of an elliptical arc shape and a straight line shape.

[0094] It should be noted that in actual application scenarios, the curvature of the circuit board 13 will not be set too large due to the fact that the touch plate 1 is basically flat and the design requirement of thinness of the touch plate 1, and the curvature of the circuit board 13 can usually be measured by using specific measuring equipment, such as a protractor, a laser range finder, a camera, a stainless steel R gauge, and an electronic digital display radius gauge.

[0095] For example, when the cross-sectional shape of the circuit board 13 along the first direction P2 is a circular arc shape, the circular arc cross section is curved towards the support plate 11, and the radius of the corresponding circle of the circular arc cross section can be set as large as possible, and the central angle of the corresponding circle of the circular arc segment can be a, as shown in Figure 4 At this time, in the visual aspect, the cross-sectional shape of the circuit board 13 along the first direction P2 is almost a straight line plane.

[0096] When the cross-sectional shape of the circuit board 13 along the first direction P2 is an elliptical arc shape, the elliptical arc shape is bent towards the support plate 11, and the major axis of the ellipse corresponding to the elliptical arc shape can be set as long as possible, and / or the minor axis of the ellipse corresponding to the elliptical arc shape can be set as short as possible. In this way, the cross-sectional shape of the circuit board 13 along the first direction P2 is visually close to a straight line shape.

[0097] When the cross-sectional shape of the circuit board 13 along the first direction P2 is a combination of a circular arc shape and a straight line shape, specifically, the cross-section of the middle portion 132 of the circuit board 13 along the first direction P2 can be a circular arc shape, the cross-sections of the two side portions 133 along the first direction P2 are straight line shapes, and the two straight line shapes are respectively connected to the opposite sides of the circular arc shape.

[0098] Optionally, the tangent direction at the connection between the at least one straight line shape and the circular arc shape can coincide with the extension direction of the two straight line shapes. Alternatively, the tangent direction at the connection between the two straight line shapes and the circular arc shape can not coincide with the extension direction of the two straight line shapes, forming an inverted Ω shape cross-section.

[0099] It can be understood that when the cross-sectional shape of the circuit board 13 along the first direction P2 is a combination of an elliptical arc shape and a straight line shape, the case is roughly the same as when the cross-sectional shape of the circuit board 13 along the first direction P2 is a combination of a circular arc shape and a straight line shape, which will not be described here.

[0100] Similarly, the portion of the reinforcing plate 12 corresponding to the middle portion 132 of the circuit board 13 is also bent towards the support plate 11, that is, the reinforcing plate 12 can have a similar structure and shape to the circuit board 13, for example, the portion of the reinforcing plate 12 corresponding to the two side portions 133 of the circuit board 13 also extends away from the support plate 11.

[0101] Please refer to Figures 12 to 14 , Figure 12 is a schematic view of the three-dimensional structure of the support plate in the embodiment of the present application, Figure 13 is a schematic view of the cross-section of the touchpad with a gasket along the A-A' direction in the embodiment of the present application, Figure 14 is Figure 13 is an enlarged schematic view of the C region in

[0102] In some embodiments, the support plate 11 is provided with an elastic portion 111 corresponding to the position of the switch unit 14. When the user presses the touchpad 1, the elastic portion 111 is compressed by the action of the switch unit 14, and when the user removes the force acting on the touchpad 1, the elastic portion 111 restores to its original state by its own elastic action and drives the touchpad 1 to reset, that is, drives the pressed circuit board 13 to reset, so that the touchpad 1 can be repeatedly pressed.

[0103] In some embodiments, the support plate 11 can be fixed to the shell of the electronic device as a support of the touchpad 1.

[0104] In some embodiments, the support plate 11 has a main body part 112 connected with the elastic part 111, and the elastic part 111 is bent relative to the main body part 112, that is, the elastic part 111 is arranged by bending. When the user presses the touchpad 1, the elastic part 111 deforms relative to the main body part 112, so that the elastic part 111 tends to be flat with the main body part 112. When the user removes the external force, the elastic part 111 restores to the shape of being bent relative to the main body part 112, and provides elastic force to the circuit board 13.

[0105] In some embodiments, the touchpad 1 further comprises a gasket 113 arranged on the elastic part 111, and the gasket 113 is located between the switch unit 14 and the elastic part 111. That is, the switch unit 14 abuts against the elastic part 111 through the gasket 113. By arranging the gasket 113 between the elastic part 111 of the support plate 11 and the switch unit 14, the switch unit 14 is supported by the gasket 113, so that the switch unit 14 can be kept in the state of being in contact with the gasket 113, thereby ensuring that the switch unit 14 can realize switching when the touchpad 1 is pressed. In addition, the switch unit 14 can avoid being damaged by the direct abutment with the support plate 11, and being affected by the extrusion and friction with the support plate 11.

[0106] It can be understood that the gasket 113 can be a Mylar gasket, which is light in weight and has elasticity, and can ensure that the switch unit 14 is kept in the abutment state and avoid damage to the switch unit 14.

[0107] In other embodiments, the gasket 113 can also be a silica gel gasket or a gasket made of other materials with elasticity, which will not be described here.

[0108] Please refer to Figure 15 , Figure 15 is a cross-sectional view of the touchpad with the reinforcing plate and the retaining member in the embodiments of the present application.

[0109] In some embodiments, the touchpad 1 further comprises a retaining member 15 arranged on the reinforcing plate 12 and corresponding to the middle part 132 of the circuit board 13. The retaining member 15 is used to connect the reinforcing plate 12 and the middle part 132 of the circuit board 13, so that the middle part 132 of the circuit board 13 is kept curved and maintains the state of protruding towards the support plate 11. By arranging the retaining member 15 to connect the reinforcing plate 12 and the circuit board 13, the circuit board 13 can be kept curved, the deformation maintenance time of the circuit board 13 is prolonged, and the duration of the high sensitivity and high pressing feedback effect of the touchpad 1 can be prolonged.

[0110] It can be understood that when the circuit board 13 is bent towards the support plate 11 by shaping, after the touchpad 1 is used for a certain period of time, the circuit board 13 can be deformed, causing the circuit board 13 to bend towards the direction away from the support plate 11, i.e. arching relative to the support plate 11, resulting in the distance between the switch unit 14 arranged on the circuit board 13 and the support plate 11 increasing, causing the pressing sensitivity and pressing feeling of the touchpad 1 to deteriorate. Therefore, the present application connects the middle part of the reinforcing plate 12 and the circuit board 13 together by arranging the retaining member 15, fixes the distance between the middle part of the support plate 11 and the circuit board 13, thereby playing a role of shaping the circuit board 13.

[0111] For example, the retaining member 15 can be a curable adhesive member. For example, epoxy resin glue, polyurethane glue, acrylic glue, hot melt glue, anaerobic glue or photocurable glue, etc. can form a support structure with high rigidity and not easy to deform after curing, thereby enabling the reinforcing plate 12 and the circuit board 13 to maintain stable bending for a long time.

[0112] Please see Figure 16 , Figure 16 is a cross-sectional view of the touchpad with a connecting layer in the embodiments of the present application.

[0113] In some embodiments, the touchpad 1 further comprises a connecting layer 16, the connecting layer 16 is arranged between the reinforcing plate 12 and the circuit board 13, the reinforcing plate 12 and the circuit board 13 are connected through the connecting layer 16, the connecting layer 16 is provided with a first through hole 161 corresponding to the middle part 132 of the circuit board 13, and the retaining member 15 is arranged around the edge of the first through hole 161.

[0114] The connecting layer 16 can fix the reinforcing plate 12 and the circuit board 13 as a whole, strengthen the connection between the circuit board 13 and the reinforcing plate 12, avoid the separation of the reinforcing plate 12 and the circuit board 13 when the retaining member 15 fails, and further prevent the circuit board 13 from being dislocated relative to the support plate 11, causing the switch unit 14 to fail to normally realize the switching function.

[0115] By arranging the first through hole 161 on the connecting layer 16 and connecting the reinforcing plate 12 and the circuit board 13 at the position corresponding to the first through hole 161 by the retaining member 15, the retaining member 15 can be directly connected to the reinforcing plate 12 and the circuit board 13, thereby improving the stability of the reinforcing plate 12 and the circuit board 13. At the same time, the first through hole 161 on the connecting layer 16 also helps to reduce the weight of the touchpad 1. The retaining member 15 is arranged around the edge of the first through hole 161, which can increase the connection points and prevent local deformation of the middle part of the circuit board 13, thereby better maintaining the bending state of the circuit board 13.

[0116] It can be understood that the retaining member 15 can be arranged in the first through hole 161 and along the inner edge of the first through hole 161.

[0117] Please see Figure 17 , Figure 17 is a schematic view of a cross section of the coupling layer with the second through hole in the embodiment of the application.

[0118] In some embodiments, the coupling layer 16 is further provided with a plurality of second through holes 162 located on opposite sides of the first through hole 161, and the reinforcing plate 12 is provided with retaining members 15 corresponding to the edges of the plurality of second through holes 162. In this way, by arranging the second through holes 162 on opposite sides of the first through hole 161 respectively, and arranging the retaining members 15 on the reinforcing plate 12 corresponding to the range of the second through holes 162 to connect the reinforcing plate 12 and the circuit board 13, the number of connecting points between the reinforcing plate 12 and the circuit board 13 can be increased, stress concentration can be avoided, and local deformation of the middle part of the circuit board 13 can be prevented, so that the middle part of the circuit board 13 can maintain a stable bending state.

[0119] For example, two second through holes 162 are arranged. The two second through holes 162 are arranged on opposite sides of the first through hole 161 along the first direction P2, and the retaining members 15 corresponding to the two second through holes 162 are arranged on the reinforcing plate 12 and connect the circuit board 13 through the retaining members 15 to fix the bending state of the circuit board 13.

[0120] It can be understood that, since the two second through holes 162 are located on opposite sides of the first through hole 161 along the first direction P2, the distance between the part of the circuit board 13 connected by the retaining members 15 corresponding to the two second through holes 162 and the reinforcing plate 12 can be greater than the distance between the part of the circuit board 13 connected by the retaining members 15 corresponding to the first through hole 161 and the reinforcing plate 12, so as to ensure that the entire circuit board 13 bends towards the support plate 11.

[0121] Of course, in some other embodiments, the second through hole 162 can also be arranged in other numbers.

[0122] In some embodiments, in order to better balance the stress of the circuit board 13 and balance the pressing feedback effect of each position of the touchpad 1, the second through hole 162 can be symmetrically arranged on opposite sides of the first through hole 161.

[0123] In some embodiments, the retaining members 15 corresponding to the positions of the second through holes 162 can also be symmetrically arranged on opposite sides of the first through hole 161.

[0124] In some embodiments, the coupling layer 16 can be a double-sided adhesive layer, and the outer contour of the coupling layer 16 can be slightly smaller than the outer contour of the reinforcing plate 12 and / or the circuit board 13, or substantially coincide with the outer contour of the reinforcing plate 12 and / or the circuit board 13, so that the bonding area between the reinforcing plate 12 and the circuit board 13 can be increased, and the stability of the connection between the reinforcing plate 12 and the circuit board 13 can be improved.

[0125] Please see Figure 18 and Figure 19 , Figure 18 is a cross-sectional view of a touchpad with a communication element in an embodiment of the present application, Figure 19 is a three-dimensional structural schematic view of a reinforcing plate in an embodiment of the present application.

[0126] In some embodiments, the touchpad 1 further comprises a communication element 17, which is arranged on the reinforcing plate 12 and is used to communicate with an external device, so that the external device can exchange information with an electronic device carrying the touchpad 1 through the touchpad 1.

[0127] In some embodiments, when the communication element 17 is in communication with the external device, the external device can be enabled to control the electronic device carrying the touchpad 1 through the touchpad 1, and / or the external device can be controlled using the touchpad 1.

[0128] Optionally, the communication element 17 can be a near field communication (NFC) component, and a user can use a mobile terminal (mobile phone, tablet computer) with an NFC function to communicate with the communication element 17, and then information exchange between the touchpad 1 and the mobile terminal can be realized.

[0129] Again see Figure 19 In some embodiments, the reinforcing plate 12 can be provided with a first accommodating groove 121, and the communication element 17 is at least partially embedded in the first accommodating groove 121, so that the communication element 17 and the reinforcing plate 12 are nested, and the thickness of the touchpad 1 can be reduced, which is conducive to the thin design of the touchpad 1.

[0130] In some embodiments, the first accommodating groove 121 can be arranged to correspond to the first through hole 161, and the opening of the first accommodating groove 121 faces the circuit board 13. At this time, the retaining member 15 corresponding to the first through hole 161 can be arranged as glue, and the glue is arranged along the edge of the first accommodating groove 121. In this way, the glue can not only bond and fix the reinforcing plate 12 and the circuit board 13, but also bond and fix the communication element 17 on the reinforcing plate 12.

[0131] In some embodiments, the bottom of the first accommodating groove 121 can be partially removed, and the bottom of the first accommodating groove 121 and the inner wall of the first accommodating groove 121 form a stepped structure, that is, the first accommodating groove 121 becomes a stepped groove with an open bottom. In this way, the weight of the touchpad 1 can be reduced, thereby reducing the weight of the touchpad 1 and helping to achieve a lightweight design of the touchpad 1.

[0132] It can be understood that the reinforcing plate 12 can also be provided with a second accommodating groove 122 similar to the first accommodating groove 121 at a position corresponding to the second through hole 162. The second accommodating groove 122 can be used to accommodate other functional devices, such as a pressure sensor, and the like, which will not be described here.

[0133] Please refer to Figure 19 and Figure 21 , Figure 20 is an exploded schematic view of a touchpad with a conductive elastic member according to an embodiment of the present application, Figure 21 is Figure 20 is an enlarged schematic view of the D area in

[0134] In some embodiments, the touchpad 1 further includes a conductive elastic member 18, which is arranged in a spaced manner with the elastic part 111 and is clamped between the circuit board 13 and the support plate 11. Correspondingly, the circuit board 13 is provided with a second conductive part 124 facing the support plate 11, and the second conductive part 124 is arranged corresponding to the conductive elastic member 18. The conductive elastic member 18 is used to electrically connect the second conductive part 124 to an external circuit. In this way, when a user presses a certain area of the touchpad 1, the rest of the touchpad 1 can be raised. At this time, the conductive elastic member 18 can be deformed using the lifting of the touchpad 1, so that the circuit board 13 and the external circuit remain electrically connected, ensuring that the circuit board 13 can be used normally.

[0135] It can be understood that the conductive elastic member 18 can be made of a material that is easy to deform and has good conductivity, such as conductive foam. The conductive foam is relatively easy to deform and can be in a certain degree of compression state when the touchpad 1 is not operated. In this way, when a user presses the position of the touchpad 1 corresponding to the switch unit 14, the position of the touchpad 1 corresponding to the conductive foam is raised. At this time, the conductive foam is elongated under the action of elasticity, so that the circuit board 13 and the external circuit remain connected.

[0136] The external circuit can be a power supply circuit, a data circuit, or a combination of both, which is not limited herein. By the cooperation of the switch unit 14 and the first conductive part 131, and the cooperation of the conductive elastic member 18 and the external circuit, the circuit board 13 and the external circuit can form a circuit loop and / or an information loop when the user presses the touchpad 1, so as to realize the information interaction and the transmission of control information between the touchpad 1 and the remaining devices in the electronic device carrying the touchpad 1.

[0137] In some other embodiments, the conductive elastic member 18 can also be a metal spring or a metal spring sheet. When the conductive elastic member 18 is a metal spring, the stiffness coefficient of the spring can be reduced by increasing the pitch of the spring, reducing the diameter of the metal wire, or the like, so that the spring is easy to stretch and contract.

[0138] In some embodiments, the conductive elastic member 18 can be spaced apart from the switch unit 14 along a second direction P3, wherein the second direction P3, the thickness direction P1, and the first direction P2 are perpendicular to each other.

[0139] In some embodiments, the conductive elastic member 18 can be provided in a plurality, and the second conductive part 124 can be correspondingly provided in a plurality. In this way, the number of the second conductive part 124 and the conductive elastic member 18 can be increased, so as to increase the area of the electrical connection between the external circuit and the circuit board 13, and further reduce the on-resistance.

[0140] In some embodiments, the reinforcing plate 12 is provided with a first avoiding hole 123 corresponding to the conductive elastic member 18, and the conductive elastic member 18 is arranged to pass through the first avoiding hole 123 to electrically connect the second conductive part 124. In this way, the conductive elastic member 18 is electrically connected to the second conductive part 124 after passing through the first avoiding hole 123, and the nested arrangement between the conductive elastic member 18 and the supporting plate 11 can reduce the thickness of the touchpad 1, which is conducive to the miniaturization design of the touchpad 1.

[0141] Optionally, the first avoiding hole 123 can be large enough to allow multiple conductive elastic members 18 to pass through the first avoiding hole 123 at the same time and be electrically connected to the circuit board 13. Alternatively, the first avoiding hole 123 can be provided in a plurality, and these first avoiding holes 123 can be one-to-one corresponding to the conductive elastic members 18. Alternatively, part of the first avoiding holes 123 can accommodate one conductive elastic member 18, and part of the first avoiding holes 123 can accommodate multiple conductive elastic members 18 at the same time.

[0142] It can be understood that the connecting layer 16 is also provided with a second avoiding hole (not shown in the figure), and the conductive elastic member 18 passes through the second avoiding hole to be electrically connected to the second conductive part 124 of the circuit board 13.

[0143] Please refer to Figure 22 and Figure 25 ,Figure 22 This is a cross-sectional schematic diagram along the A-A' direction of a touchpad with a spiral rod bracket and a spiral rod according to an embodiment of this application. Figure 23 yes Figure 22 Enlarged diagram of region E in the middle. Figure 24 This is a schematic diagram of the assembly of the spiral rod bracket and the spiral rod in an embodiment of this application. Figure 25 yes Figure 24 The diagram shows a three-dimensional structure of the spiral rod support and the spiral rod itself.

[0144] In some embodiments, the touchpad 1 further includes a hinge bracket 191 and a hinge rod 192. The hinge bracket 191 is fixed to the support plate 11 and disposed near the switch unit 14. The hinge rod 192 is rotatably disposed on the hinge bracket 191 and has at least two connecting portions 192a that are movably connected to the support plate 11. Thus, when the user presses the touchpad 1 at the position corresponding to the switch unit 14, the portion of the touchpad 1 near the switch unit 14 that corresponds to the extension path of the hinge rod 192 will simultaneously press down and move under the action of the hinge rod 192, making the pressing feel of the touchpad 1 more balanced.

[0145] It is understandable that when there is only one boom bracket 191 and boom 192, and it is located on one side of the touchpad 1, the touchpad 1 is a half-area touchpad.

[0146] In some embodiments, the U-shaped rod bracket 191 has a mounting groove 191a extending along a first direction P2, and the U-shaped rod 192 has a rod body portion 192b rotatably embedded in the mounting groove 191a. The opposite ends of the rod body portion 192b in the first direction P2 protrude from the mounting groove 191a. There are two connecting portions 192a, which are respectively connected to the opposite ends of the rod body portion 192b in the first direction P2. Both connecting portions 192a can be movably connected to the support plate 11.

[0147] In some embodiments, the two connecting portions 192a extend in the same radial direction along the rod body portion 192b, making the U-shaped rod 192 as a whole U-shape. In other embodiments, the two connecting portions 192a may also have bent extensions, and the bent extensions of the two connecting portions 192a extend towards each other along the axial direction of the rod body portion 192b.

[0148] In some embodiments, the U-shaped rod bracket 191a is provided with retaining members 191b spaced apart along the second direction P3. For example, there may be two retaining members 191b, which are respectively provided on opposite sides of the mounting groove 191a along the second direction P2. When the rod body portion 192b is assembled into the mounting groove 191a, the retaining members 191b restrict the position of the rod body portion 192b, so that the rod body portion 192b cannot be disengaged from the mounting groove 191a in its natural state.

[0149] In some embodiments, the touchpad 1 further comprises a touch layer (not shown in the figure), which is arranged on the side of the circuit board 13 facing away from the support plate 11, and is used to sense the user's hand to detect the position and distance of the user's hand. Generally, there is a mapping relationship between the touch layer and the display area of the electronic device display device, and when the user's hand touches a specific position of the touch layer, a cursor or other mark reflecting the position of the user's hand can appear at the corresponding position in the display area of the display device.

[0150] Optionally, the touch layer can be a capacitive sensing layer, which is usually made of ITO (indium tin oxide) material, or a pressure sensing layer, which is not limited in the present application.

[0151] In some embodiments, the circuit board 13 and the touch layer can also be fixed by a bonding layer.

[0152] In still other embodiments, the touchpad 1 further comprises a cover plate (not shown in the figure), which is arranged on the side of the touch layer facing away from the support plate 11, and is used to protect the touch layer. The cover plate can be made of a glass substrate or a polymer substrate, which is not limited in the present application.

[0153] Please refer to Figure 26 , Figure 26 is a distribution diagram of the touchpad pressing test points provided in the present application.

[0154] Six points A, B, C, D, E and F are selected on the touchpad for pressing test to detect the pressing feeling of different points. It should be noted that the pressing test is detected by a half-domain touchpad, including the half-domain touchpad in the related art and the touchpad 1 provided in the present application. Among them, point A is the left test point of the switch unit 14, located at the lower left corner of the touchpad, point B is the test point directly above the switch unit 14, point C is the right test point of the switch unit 14, located at the lower right corner of the touchpad, point D is the left upper test point of the switch unit 14, located at the middle of the left side of the touchpad, point E is the middle upper test point of the switch unit 14, located at the middle of the touchpad, and point F is the right upper test point of the touchpad, located at the middle of the right side of the touchpad.

[0155] Table 1 is the pressing test result of the touchpad without connecting member after shaping, and Table 2 is the pressing test result of the touchpad with connecting member after shaping. It should be noted that the pressing force is the force applied to each test point of the touchpad, which is converted into weight unit (g) in Table 1 and Table 2. The pressing force of all test points is 600 g. The trigger force is the pressing force when the touchpad is pressed to the point that the switch unit 14 is triggered. The spring feeling is the ratio of the spring force acting on the pressing device to the pressing force when the touchpad is pressed to the point that the switch unit 14 is triggered. Five touchpad samples before improvement (shaped sample 1, shaped sample 2, shaped product 3, shaped product 4 and shaped sample 5) are randomly selected for testing at different time periods t1, t2 and t3, and three touchpad samples after improvement (glued sample 1, glued sample 2 and glued sample 3) are randomly selected for testing at different time periods T1, T2, T3, T4, T5 and T6. Wherein, t1 is within 1 hour after shaping, t2 is 12 hours after shaping, t3 is 36 hours after shaping, T1 is the first day after the glue is cured, T2 is the second day after the glue is cured, T3 is the fourth day after the glue is cured, T4 is the eleventh day after the glue is cured, T5 is the sixteenth day after the glue is cured, and T6 is the twenty-ninth day after the glue is cured. In the three improved touchpad samples, the retaining member is provided with glue, and is arranged along the edge of the first accommodating groove 121.

[0156] Table 1

[0157]

[0158] Table 2

[0159]

[0160] As can be seen from Table 1, in the touchpad without connecting member, the spring feeling of D point and F point is weak, and the rebound force ratio is less than 10%, but the spring feeling of the rest of the test points is good, and the rebound force ratio is more than 10%, which shows that by bending the reinforcing plate 12 and the circuit board 13 towards the support plate 11, the spring feeling of multiple points of the touchpad can be optimized. However, it can be found that the persistence of the effect of the shaped touchpad is weak. When the time is t3, the rebound force ratio of sample 2 and sample 5 at D point is less than 1%, that is, the effect after shaping has disappeared. In the touchpad 1 with connecting member, the spring feeling of all test results of all test points of all samples is good, and the rebound force ratio is more than 10%, and on the 29th day after the glue is cured, the rebound force ratio of all samples still remains more than 10%, which shows that the touchpad with connecting member has good hand feeling feedback and can maintain the good effect for a long time.

[0161] In a second aspect, the present application also provides an electronic device 2, which comprises the touchpad 1 of any of the above embodiments.

[0162] Please see Figure 27 , Figure 27 is a schematic diagram of a three-dimensional structure of an electronic device in an embodiment of the present application.

[0163] Specifically, the electronic device 2 has a device main body 21, and the touchpad 1 is arranged on the device main body. A user can control the device main body 21 by operating the touchpad 1.

[0164] Optionally, the electronic device 2 can be a notebook computer or other electronic device that needs or can be equipped with the above touchpad 1, and the present application does not make specific limitations on this.

[0165] The above has introduced in detail a touchpad and an electronic device disclosed in the embodiments of the present application. This document has applied an example to describe the principles and implementation manners of the present application. The above embodiment description is only used to help understand the touchpad and the electronic device of the present application and the core idea thereof. Meanwhile, for those skilled in the art, according to the idea of the present application, the specific implementation manners and application ranges will be changed, and the above description should not be understood as a limitation on the present application.

Claims

1. A touchpad, comprising: The touchpad comprises: a support plate; a reinforcing plate, which is arranged in layers with the support plate; a circuit board, which is arranged in layers with the reinforcing plate and is fixedly connected to a side of the reinforcing plate away from the support plate, one side of the circuit board facing the support plate is provided with a first conductive part, and at least a portion of the circuit board and the reinforcing plate corresponding to the first conductive part is configured to bend toward the support plate along a thickness direction of the support plate; a switch unit, which is arranged corresponding to the first conductive part and is located on a side of the circuit board facing the support plate, and the switch unit is configured to be electrically connected with the first conductive part under the action of the support plate when the circuit board is pressed.

2. The touchpad of claim 1, wherein, A cross section of the reinforcing plate and the circuit board perpendicular to a first direction is configured to bend toward the support plate, and a distance between opposite sides of the reinforcing plate and the circuit board and the support plate increases in a direction away from a geometric center of the reinforcing plate and the circuit board. The first direction is perpendicular to the thickness direction.

3. The touchpad of claim 2, wherein, The touchpad further comprises a retaining member arranged between the reinforcing plate and the circuit board, the retaining member is used to connect the reinforcing plate and the circuit board and keep the reinforcing plate and the circuit board in a state of bending toward the support plate.

4. The touchpad of claim 3, wherein, The retaining member is a rigid member and is configured to bend toward the support plate along the thickness direction.

5. The touchpad of claim 3, wherein, The touchpad further comprises a coupling layer arranged between the reinforcing plate and the circuit board, the reinforcing plate and the circuit board are connected through the coupling layer, the coupling layer is provided with a first through hole, and the retaining member is arranged around an edge of the first through hole.

6. The touchpad of claim 5, wherein, The coupling layer is further provided with a plurality of second through holes located on opposite sides of the first through hole, and the reinforcing plate is provided with the retaining member around edges of the plurality of second through holes.

7. The touchpad of claim 3, wherein, The retaining member is a plurality of members, and the plurality of retaining members are arranged at intervals along an extension direction of a bending cross section of the circuit board perpendicular to the first direction.

8. The touchpad according to any one of claims 1-7, wherein, The touchpad further comprises a gasket, the support plate is provided with an elastic part at a position corresponding to the switch unit, and the gasket is arranged between the elastic part and the switch unit.

9. The touchpad of claim 8, wherein, The touchpad further comprises a conductive elastic member, which is arranged at an interval from the elastic part and is clamped between the circuit board and the support plate. The circuit board is provided with a second conductive part facing the support plate, the second conductive part is arranged corresponding to the conductive elastic member, and the conductive elastic member is used to electrically connect the second conductive part with an external circuit.

10. An electronic device, comprising: The touchpad comprises any one of the touchpads according to claims 1-9.

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