Touch switches and cars

Abstract

This invention discloses a touch switch and an automobile. The touch switch includes a housing, a piezoelectric module, and a pressure-resistant bracket. The housing includes a touch panel and a bottom shell fixedly connected together. The touch panel includes a deformable portion. The piezoelectric module is fixed to the touch panel and can undergo voltage changes under the action of the deformable portion. The pressure-resistant bracket is sleeved on the piezoelectric module, with one end connected to the deformable portion and the other end abutting against the bottom shell to support the deformation of the deformable portion. This invention improves the operating force resistance of the touch switch.

Description

Technical Field

[0001] This invention relates to the field of touch switch technology, and particularly to a touch switch and an automobile. Background Technology

[0002] With the development of touch technology, car interior switches have gradually changed from traditional mechanical switches to touch switches. However, for car drivers, operating touch buttons without feedback requires them to focus their eyes on the buttons and check for feedback from time to time, which can easily affect driving safety.

[0003] To address these issues, existing touch switches on the market incorporate a vibration actuator on the inner side of the switch surface. To enhance vibration performance, the surface material thickness is reduced compared to traditional mechanical switches. However, under prolonged use and / or excessive force applied to the switch surface, excessive deformation can easily occur, leading to structural failure. Summary of the Invention

[0004] The main objective of this invention is to provide a touch switch that improves the operating force resistance of the touch switch.

[0005] To achieve the above objectives, the present invention provides a touch switch comprising:

[0006] The housing includes a touch panel and a bottom shell that are fixedly connected, and the touch panel includes a deformable part;

[0007] A piezoelectric module, fixed to the touch panel, and capable of voltage change under the action of the deformable part; and

[0008] A pressure-resistant bracket is fitted onto the piezoelectric module, with one end connected to the deformable part and the other end abutting against the bottom shell to support the deformation of the deformable part.

[0009] Optionally, the pressure-resistant bracket includes a first support portion, a second support portion, and a connecting portion connected between the first support portion and the second support portion. The first support portion, the connecting portion, and the second support portion enclose a through cavity for the piezoelectric module to pass through. The first support portion is located between the deformable portion and the piezoelectric module, and the second support portion is located between the bottom shell and the piezoelectric module.

[0010] Optionally, the deformable part has an annular groove on the side facing the bottom shell, the first support part matches the annular groove, a portion of the deformable part passes through the first support part, and is used to cause voltage changes in the piezoelectric module.

[0011] Optionally, the thickness of the first support is less than the groove depth of the annular groove, and a gap is left between the first support and the bottom wall of the annular groove for the deformation part to deform.

[0012] And / or, the surface of the first support portion facing the groove sidewall of the annular groove is an arc surface, and the inner surface of the groove sidewall of the annular groove is an arc surface.

[0013] Optionally, the first support portion includes a first support sub-portion and at least two second support sub-portions, with at least two second support sub-portions protruding from the edge of the first support sub-portion and distributed on opposite sides of the piezoelectric module, and the second support sub-portions being used to fix the connecting portion.

[0014] Optionally, the second support portion has a square structure, and the second support sub-part is set corresponding to the vertex of the second support portion.

[0015] Optionally, the bottom shell has reinforcing ribs on the surface facing the touch panel, and the second support portion abuts against the reinforcing ribs.

[0016] Optionally, the piezoelectric module includes a deformable element and a fixed base that are fixedly connected. The touch panel includes a mounting part that is disposed along the periphery of the deformable part and is fixedly connected to the bottom shell. The fixed base is fixedly connected to the mounting part, and the deformable element abuts against the deformable part.

[0017] Optionally, the deformable component includes a positioning piece and a piezoelectric ceramic piece. The positioning piece includes a first positioning segment and two second positioning segments disposed on opposite sides of the first positioning segment. The piezoelectric ceramic piece is disposed on the side of the first positioning segment away from the deformable part, and the second positioning segments are clamped between the deformable part and the fixed base.

[0018] Optionally, the fixing base includes a base plate and two pressing protrusions. The two pressing protrusions are arranged at intervals on the base plate and both extend toward the second positioning section. The second positioning section is fixedly connected to the pressing protrusions, and the piezoelectric ceramic sheet is placed between the two pressing protrusions.

[0019] Optionally, the fixing seat further includes a limiting plate, which surrounds the edge of the bottom plate and is connected to the pressing protrusion. The mounting part is provided with a connecting seat on the side facing the bottom shell. The connecting seat is inserted between the limiting plate and the pressing protrusion and is fixedly connected to the bottom plate.

[0020] And / or, the mounting part is further provided with at least two lateral positioning blocks, and the at least two lateral positioning blocks are respectively distributed on opposite sides of the base plate;

[0021] And / or, the mounting part is further provided with at least two longitudinal positioning blocks, the at least two longitudinal positioning blocks being distributed on opposite sides of the two abutting protrusions.

[0022] The present invention also proposes an automobile that includes the touch switch described above.

[0023] In this invention, by installing a pressure-resistant bracket over the piezoelectric module, when the piezoelectric module and the pressure-resistant bracket are assembled into the housing, the side of the bottom shell facing the touch panel is always in contact with one end of the pressure-resistant bracket. This allows the bottom shell to provide support to the pressure-resistant bracket toward the touch panel, restricting the movement of the pressure-resistant bracket toward the bottom shell. Furthermore, when the deformable part deforms toward the bottom shell, after exceeding a certain deformation, it can abut against the other end of the pressure-resistant bracket. Thus, the pressure-resistant bracket can provide support to the deformed part away from the bottom shell, effectively preventing excessive deformation of the deformable part from causing structural failure. That is, when the hand leaves the touch panel, the deformable part can return to its original shape, which is beneficial to improving the operating force resistance of the touch switch and extending its service life. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of an embodiment of the touch switch of the present invention;

[0026] Figure 2 for Figure 1 An exploded view of the touch switch from a first-person perspective;

[0027] Figure 3 for Figure 1 An exploded view of the touch switch from a second perspective;

[0028] Figure 4 for Figure 1 A schematic diagram of the touch switch after the bottom cover has been removed.

[0029] Figure 5 for Figure 1 Cross-sectional view of the central touch switch;

[0030] Figure 6 for Figure 5 A magnified view of a section at point A in the middle;

[0031] Figure 7 for Figure 5 A schematic diagram of the structure of the touch switch when it is pressed.

[0032] Explanation of icon numbers:

[0033]

[0034]

[0035] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0037] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0038] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0039] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the word "and / or" throughout the text means including three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0040] This invention proposes a touch switch.

[0041] Reference Figures 1 to 7 In this embodiment of the invention, the touch switch includes a housing 10, a piezoelectric module 20, and a pressure-resistant bracket 30. The housing 10 includes a touch panel 11 and a bottom shell 17 that are fixedly connected. The touch panel 11 includes a deformation part 12. The piezoelectric module 20 is fixed to the touch panel 11 and can undergo voltage changes under the action of the deformation part 12. The pressure-resistant bracket 30 is sleeved on the piezoelectric module 20, and one end can be connected to the deformation part 12, while the other end abuts against the bottom shell 17 to support the deformation of the deformation part 12, thereby improving the operating force resistance of the touch switch.

[0042] The touch switch also includes a control circuit board, which is located outside the housing 10 and electrically connected to the piezoelectric module 20. The control circuit board can control the start or stop of the electrical equipment by the voltage change generated by the piezoelectric module 20. When the piezoelectric module 20 and the control circuit board are electrically connected by a wire harness, the wire harness can be laid along the connection gap between the piezoelectric module 20 and the touch panel 11.

[0043] The bottom shell 17 can be fixed to the back of the touch panel 11 by means of connection such as adhesive, snap-fit, screw, etc. The front of the touch panel 11 is exposed to the environment, which is convenient for the operator to trigger the operation. The bottom shell 17 and the touch panel 11 are connected to form a receiving cavity to accommodate the piezoelectric module 20 and the pressure-resistant bracket 30, which protects the piezoelectric module 20 and the pressure-resistant bracket 30 from damage, and at the same time facilitates the overall assembly of the touch switch.

[0044] The touch panel 11 includes a deformation part 12, wherein the piezoelectric module 20 can be fixed to the touch panel 11 by means of connection such as bonding, embedding, or screwing, and is arranged opposite to the deformation part 12. When a person presses the deformation part 12, the deformation part 12 can deform under the action of external force. On the one hand, the piezoelectric module 20 is subjected to pressure and generates voltage change, thereby controlling the on and off of the control circuit and realizing the start or stop of the electrical equipment. On the other hand, the piezoelectric module 20 will generate vibration after receiving the electrical signal, and transmit the vibration back to the person's hand through the deformation part 12. This is beneficial for providing feedback to the operator without requiring the operator to keep their eyes on the touch panel 11, thus ensuring the effectiveness and reliability of the trigger operation.

[0045] The deformable part 12 is a deformable portion of the touch panel 11. Its specific shape can adapt to the structure of the human hand, providing the operator with a better touch feel. To prevent excessive deformation of the deformable part 12 from causing structural failure, this application provides a pressure-resistant bracket 30 around the piezoelectric module 20. This ensures that when the piezoelectric module 20 and the pressure-resistant bracket 30 are assembled into the housing 10, the side of the bottom shell 17 facing the touch panel 11 always abuts against one end of the pressure-resistant bracket 30. This allows the bottom shell 17 to provide support to the pressure-resistant bracket 30 towards the touch panel 11. The pressure-resistant bracket 30 is restricted from moving toward the bottom shell 17. When the deformable part 12 deforms toward the bottom shell 17, the deformable part 12 can abut against the other end of the pressure-resistant bracket 30 after exceeding a certain deformation. Thus, the pressure-resistant bracket 30 can provide support force to the deformed part 12 away from the bottom shell 17, effectively preventing the deformable part 12 from being over-deformed and causing structural failure. That is, when the hand leaves the touch panel 11, the deformable part 12 can return to its original shape, which is beneficial to improving the operating force resistance of the touch switch and extending the service life of the touch switch.

[0046] In the technical solution of this invention, by installing a pressure-resistant bracket 30 over the piezoelectric module 20, when the combination of the piezoelectric module 20 and the pressure-resistant bracket 30 is assembled into the housing 10, the side of the bottom shell 17 facing the touch panel 11 is always in contact with one end of the pressure-resistant bracket 30. This allows the bottom shell 17 to provide a supporting force to the pressure-resistant bracket 30 toward the touch panel 11, restricting the movement of the pressure-resistant bracket 30 toward the bottom shell 17. Furthermore, when the deformable part 12 deforms toward the bottom shell 17, after exceeding a certain deformation, the deformable part 12 can abut against the other end of the pressure-resistant bracket 30. Thus, the pressure-resistant bracket 30 can provide a supporting force to the deformed deformable part 12 away from the bottom shell 17, effectively preventing the deformable part 12 from excessively deforming and causing structural failure. That is, when the hand leaves the touch panel 11, the deformable part 12 can return to its original shape, which is beneficial to improving the operating force resistance of the touch switch and extending the service life of the touch switch.

[0047] Reference Figures 2 to 3 In one embodiment, the pressure-resistant bracket 30 includes a first support portion 31, a second support portion 32, and a connecting portion 33 connecting the first support portion 31 and the second support portion 32. The first support portion 31, the connecting portion 33, and the second support portion 32 enclose a through cavity 34 through which the piezoelectric module 20 passes. The first support portion 31 is disposed between the deformable portion 12 and the piezoelectric module 20, and the second support portion 32 is disposed between the bottom shell 17 and the piezoelectric module 20. This can effectively support the deformable portion 12 and greatly improve the operating force resistance of the touch switch.

[0048] The first support portion 31, the connecting portion 33, and the second support portion 32 enclose a through cavity 34 through which the piezoelectric module 20 passes, facilitating the insertion of the piezoelectric module 20 into the pressure-resistant bracket 30 to form a combined assembly and directly participate in assembly, thereby improving assembly efficiency. The first support portion 31, the connecting portion 33, and the second support portion 32 are an integral structure.

[0049] After being assembled into the housing 10, the second support part 32 is located between the bottom shell 17 and the piezoelectric module 20, which facilitates the contact between the bottom shell 17 and the second support part 32 and provides a supporting force to the second support part 32 toward the touch panel 11. Then, the supporting force is transmitted to the first support part 31 through the connecting part 33. When the deformable part 12 deforms toward the bottom shell 17, since the first support part 31 is located between the deformable part 12 and the piezoelectric module 20, the deformed part 12 can be supported by the first support part 31 while causing the piezoelectric module 20 to generate voltage changes. This effectively prevents the deformable part 12 from structural failure due to excessive deformation, thereby improving the operating force resistance of the touch switch and extending the service life of the touch switch.

[0050] Specifically, in one embodiment, the deformable part 12 is provided with an annular groove 121 on the side facing the bottom shell 17. The first support part 31 matches the annular groove 121. Part of the deformable part 12 passes through the first support part 31 and is used to cause the piezoelectric module 20 to undergo voltage changes. It can be understood that by setting the annular groove 121, the deformable part 12 can be thinned so that a small pressing force can be applied to deform the deformable part 12. Furthermore, by limiting the vibration force transmitted in the reverse direction by the piezoelectric module 20 within the deformable part 12, the vibration effect can be improved, allowing the operator to obtain corresponding feedback more clearly and quickly at the deformable part 12.

[0051] The first support part 31 has a clearance through hole for the partial deformation part 12 to pass through, so that the partial deformation part 12 can extend into and extend toward the piezoelectric module 20. There is a gap between the hole wall of the clearance through hole and the deformation part 12 extending into the clearance through hole, so that the deformation part 12 can deform reliably and cause the piezoelectric module 20 to generate voltage change. The gap can prevent the hole wall from directly acting on the connection between the bottom wall and the side wall of the annular groove 121, which could lead to cracks or even breakage.

[0052] Optionally, in one embodiment, the thickness of the first support portion 31 is less than the groove depth of the annular groove 121, and a gap is left between the first support portion 31 and the bottom wall of the annular groove 121 for the deformation portion 12 to deform, so that when the deformation portion 12 is pressed, the bottom wall of the annular groove 121 deforms and gradually approaches the first support portion 31, and the portion of the deformation portion 12 passing through the first support portion 31 moves toward the piezoelectric module 20, so that the piezoelectric module 20 generates a voltage change.

[0053] Optionally, in one embodiment, the surface of the first support portion 31 facing the groove sidewall of the annular slot 121 is an arc surface, and the inner surface of the groove sidewall of the annular slot 121 is an arc surface. On the one hand, this allows the bottom wall area of ​​the annular slot 121 to be as large as possible, and gives the annular slot 121 a better deformation effect. On the other hand, it improves the ability to confine the vibration force transmitted in reverse by the piezoelectric module 20 within the annular slot 121, preventing the vibration from spreading outward to other areas of the touch panel 11, and concentrating the vibration effect in the central area of ​​the annular slot 121, i.e., the deformation portion 12 located at the avoidance through hole, thereby improving the vibration effect and allowing the operator to obtain corresponding feedback more clearly and quickly at the deformation portion 12. However, in other embodiments, the surface of the first support portion 31 facing the groove sidewall of the annular slot 121 and the inner surface of the groove sidewall of the annular slot 121 may not be arc surfaces 313.

[0054] Reference Figure 3 In one embodiment, the first support portion 31 includes a first support sub-portion 311 and at least two second support sub-portions 312. The at least two second support sub-portions 312 protrude from the edge of the first support sub-portion 311 and are respectively distributed on opposite sides of the piezoelectric module 20. The second support sub-portions 312 are used to fix the connecting portion 33, so that the supporting force acting on the second support portion 32 can be evenly transmitted to the first support sub-portion 311 through the connecting portion 33 and the second support sub-portions 312, thereby reliably supporting the deformable portion 12. There may be two, three, four, or other second support sub-portions 312, with each second support sub-portion 312 evenly distributed along the edge of the first support sub-portion 311.

[0055] Specifically, the periphery of the first support sub-part 311 is an arc-shaped structure, and the periphery of the second support sub-part 312 is also an arc-shaped structure. Furthermore, the first support sub-part 311 and the second support sub-part 312 are smoothly connected, which allows the deformable part to have a better deformation and vibration effect.

[0056] Optionally, in one embodiment, the second support portion 32 is a square structure, and the second support sub-part 312 is set at the vertex of the second support portion 32. It can be understood that when the second support portion 32 is a regular quadrilateral structure, the connecting portion 33 is provided with four connecting feet corresponding to the second support sub-part 312, which connects to the four second support sub-parts 312, which is beneficial to improve the uniformity of force on the first support sub-part 311.

[0057] Reference Figure 3 In one embodiment, the bottom shell 17 has a reinforcing rib 18 on the surface facing the touch panel 11, and the second support 32 abuts against the reinforcing rib 18. The reinforcing rib 18 and the bottom shell 17 can be integrally molded by injection molding. The setting of the reinforcing rib 18 facilitates processing and manufacturing, and is conducive to improving the structural strength of the bottom shell 17, preventing the bottom shell 17 from deforming and failing to provide good support for the second support 32.

[0058] Reference Figures 2 to 7 In one embodiment, the piezoelectric module 20 includes a deformable member 21 and a fixed base 24 that are fixedly connected. The touch panel 11 includes a mounting part 13, which is arranged along the periphery of the deformable part 12 and fixedly connected to the bottom shell 17. The fixed base 24 is fixedly connected to the mounting part 13, and the deformable member 21 abuts against the deformable part 12 to realize the assembly of the piezoelectric module 20 with the pressure-resistant bracket 30 sleeved on.

[0059] The mounting part 13 and the bottom shell 17 can be fixed by means of connection such as adhesive, snap-fit, or screw. The mounting part 13 and the fixing base 24 can be fixed by means of connection such as screw or snap-fit, thereby fixing the piezoelectric module 20 to the touch panel 11. At this time, the first support part 31 of the pressure-resistant bracket 30 is located between the deformable part 12 and the deformable element 21, and part of the deformable part 12 passes through the first support part 31 and abuts against the deformable element 21, so that when the deformable part 12 is deformed by force, the deformable element 21 can deform accordingly and generate voltage change. The second support part 32 of the pressure-resistant bracket 30 is located between the fixing base 24 and the bottom shell 17. One side of the second support part 32 abuts against the bottom shell 17, and the other side can be spaced apart from the fixing base 24 to avoid the supporting force on the second support part 32 being transmitted to the fixing base 24, thereby reducing the supporting effect of the first support part 31.

[0060] Furthermore, in one embodiment, the deformable member 21 includes a positioning piece 22 and a piezoelectric ceramic piece 23. The positioning piece 22 includes a first positioning segment 221 and two second positioning segments 222 disposed on opposite sides of the first positioning segment 221. The piezoelectric ceramic piece 23 is disposed on the side of the first positioning segment 221 away from the deformable part 12. The second positioning segments 222 are clamped between the deformable part 12 and the fixing seat 24. This arrangement facilitates the fixing of the piezoelectric ceramic piece 23 to the fixing seat 24.

[0061] The positioning piece 22 and the piezoelectric ceramic piece 23 can be pre-fixed into a whole by means of, for example, adhesive bonding. Then, through the second positioning segment 222 of the positioning piece 22, the piezoelectric ceramic piece 23 can be reliably bonded to the fixing base 24 by, but not limited to, adhesive. When the fixing base 24 is fixedly connected to the touch panel 11, the second positioning segment 222 can be further clamped between the deformable part 12 and the fixing base 24, thereby ensuring that the piezoelectric ceramic piece 23 is reliably fixed to the fixing base 24.

[0062] Specifically, in one embodiment, the fixing base 24 includes a base plate 241 and two pressing protrusions 242. The two pressing protrusions 242 are spaced apart on the base plate 241 and both extend toward the second positioning section 222. The second positioning section 222 is fixedly connected to the pressing protrusions 242, and the piezoelectric ceramic sheet 23 is placed between the two pressing protrusions 242. The two pressing protrusions 242 are spaced apart along the length of the base plate 241 and both extend toward the second positioning section 222, thus forming a groove shape with an open upper end and a hollow interior. This allows the deformable component 21 to be connected to the corresponding pressing protrusions 242 through the two second positioning sections 222, thereby connecting the deformable component 21 to the fixing base 24. The piezoelectric ceramic sheet 23 is located between the two pressing protrusions 242 and spaced apart from the base plate 241, so that when the deformable component 21 is deformed by force, the piezoelectric ceramic sheet 23 can reliably deform toward the base plate 241.

[0063] Optionally, in one embodiment, the fixing base 24 further includes a limiting plate 243, which surrounds the edge of the end of the base plate 241 and is connected to the pressing protrusion 242. A connecting seat 14 is provided on the side of the mounting part 13 facing the bottom shell 17. The connecting seat 14 is inserted between the limiting plate 243 and the pressing protrusion 242 and is fixedly connected to the base plate 241. The connecting seat 14 has a threaded hole, and the end of the base plate 241 has a corresponding through hole. Through the cooperation of the limiting plate 243 and the pressing protrusion 242, the connecting seat 14 can be quickly inserted between the limiting plate 243 and the pressing protrusion 242, aligning the threaded hole and the through hole. This facilitates the use of fasteners such as screws to pass through the through hole and screw into the threaded hole, thereby allowing the fixing base 24 to be quickly assembled onto the touch panel 11. The structure is simple and assembly is convenient. Furthermore, the connecting seat 14 can also control the distance between the deformable part 21 and the deformable portion 12.

[0064] Reference Figure 2 and Figure 4 In one embodiment, the mounting portion 13 is further provided with at least two lateral positioning blocks 15, which are respectively distributed on opposite sides of the base plate 241 to accelerate the assembly efficiency of the fixing seat 24 and the touch panel 11. In this embodiment, four lateral positioning blocks 15 are provided, which are spaced apart and arranged along the width extension direction of the base plate 241, thereby restricting the movement of the base plate 241 along its width extension direction and facilitating the connection and fixation of the end of the base plate 241 to the connecting seat 14 on the mounting portion 13.

[0065] Optionally, in one embodiment, the mounting portion 13 is further provided with at least two longitudinal positioning blocks 16, which are respectively distributed on the opposite sides of the two abutting protrusions 242, to further accelerate the assembly efficiency of the fixing seat 24 and the touch panel 11. In this embodiment, four longitudinal positioning blocks 16 are provided, which are spaced apart and arranged along the length extension direction of the base plate 241. This allows the fixing seat 24 to be inserted between the longitudinal positioning blocks 16 arranged opposite each other along the length extension direction of the base plate 241 through the two abutting protrusions 242, thereby restricting the movement of the base plate 241 along its length extension direction and facilitating the connection and fixation of the end of the base plate 241 to the connecting seat 14 on the mounting portion 13.

[0066] The present invention also proposes an automobile that includes a touch switch. The specific structure of the touch switch is as described in the above embodiments. Since the automobile adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0067] Touch switches can be installed on the steering wheel or doors of a car to control the car lights, windows, and other structural components that need to be controlled to start or stop.

[0068] The above description is merely an optional embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A touch switch, characterized in that, include: The housing includes a touch panel and a bottom shell that are fixedly connected, and the touch panel includes a deformable part; A piezoelectric module is fixed to the touch panel and is capable of voltage change under the action of the deformable part; as well as A pressure-resistant bracket is fitted onto the piezoelectric module, with one end connected to the deformable part and the other end abutting against the bottom shell to support the deformation of the deformable part; The pressure-resistant bracket includes a first support portion, a second support portion, and a connecting portion connecting the first support portion and the second support portion. The first support portion, the connecting portion, and the second support portion enclose a through cavity for the piezoelectric module to pass through. The first support portion is located between the deformable portion and the piezoelectric module, and the second support portion is located between the bottom shell and the piezoelectric module. The deformable part has an annular groove on the side facing the bottom shell. The first support part matches the annular groove. Part of the deformable part passes through the first support part and is used to cause voltage changes in the piezoelectric module.

2. The touch switch as described in claim 1, characterized in that, The thickness of the first support is less than the groove depth of the annular groove, and a gap is left between the first support and the bottom wall of the annular groove for the deformation part to deform. And / or, the surface of the first support portion facing the groove sidewall of the annular groove is an arc surface, and the inner surface of the groove sidewall of the annular groove is an arc surface.

3. The touch switch as described in claim 1, characterized in that, The first support portion includes a first support sub-part and at least two second support sub-parts. The at least two second support sub-parts protrude from the edge of the first support sub-part and are respectively distributed on opposite sides of the piezoelectric module. The second support sub-parts are used to fix the connecting portion.

4. The touch switch as described in claim 3, characterized in that, The second support part has a square structure, and the second support sub-part is set corresponding to the vertex of the second support part.

5. The touch switch as described in claim 1, characterized in that, The bottom shell has reinforcing ribs on the surface facing the touch panel, and the second support part abuts against the reinforcing ribs.

6. The touch switch as described in claim 1, characterized in that, The piezoelectric module includes a deformable element and a fixed base that are fixedly connected. The touch panel includes a mounting part that is arranged along the periphery of the deformable part and is fixedly connected to the bottom shell. The fixed base is fixedly connected to the mounting part, and the deformable element abuts against the deformable part.

7. The touch switch as described in claim 6, characterized in that, The deformable component includes a positioning piece and a piezoelectric ceramic piece. The positioning piece includes a first positioning segment and two second positioning segments located on opposite sides of the first positioning segment. The piezoelectric ceramic piece is located on the side of the first positioning segment away from the deformable part. The second positioning segments are clamped between the deformable part and the fixed base.

8. The touch switch as described in claim 7, characterized in that, The fixing base includes a base plate and two pressing protrusions. The two pressing protrusions are arranged at intervals on the base plate and both extend toward the second positioning section. The second positioning section is fixedly connected to the pressing protrusions, and the piezoelectric ceramic sheet is placed between the two pressing protrusions.

9. The touch switch as described in claim 8, characterized in that, The fixing base also includes a limiting plate, which surrounds the edge of the bottom plate and is connected to the pressing protrusion. The mounting part has a connecting seat on the side facing the bottom shell. The connecting seat is inserted between the limiting plate and the pressing protrusion and is fixedly connected to the bottom plate. And / or, the mounting part is further provided with at least two lateral positioning blocks, and the at least two lateral positioning blocks are respectively distributed on opposite sides of the base plate; And / or, the mounting part is further provided with at least two longitudinal positioning blocks, the at least two longitudinal positioning blocks being distributed on opposite sides of the two abutting protrusions.

10. A car, characterized in that, Including the touch switch as described in any one of claims 1 to 9.

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