CN212783161U

CN212783161U - Key switch assembly and intelligent key panel

Info

Publication number: CN212783161U
Application number: CN202021563443.9U
Authority: CN
Inventors: 陈正权; 刘文扬; 吴斌明
Original assignee: Shenzhen Oribo Technology Co Ltd
Current assignee: Shenzhen Oribo Technology Co Ltd
Priority date: 2020-07-31
Filing date: 2020-07-31
Publication date: 2021-03-23
Anticipated expiration: 2030-07-31

Abstract

The application provides a key switch subassembly, including the face-piece and press the key, the face-piece is provided with the installation department, presses the key and includes that first pressing end, second press the end and connect the body, presses the connection body connection of key and presses between the end in first pressing end and second, connects the body and is equipped with cooperation portion, cooperation portion rotationally sets up in the installation department, presses end or second when receiving the pressure effect at first pressing end or second, presses the key and rotates for the face-piece. The application provides a push switch subassembly rotationally sets up in the installation department in order to form "seesaw" structure through the connection body that will press the key, when first end and the second of pressing press one in the end and receive the pressing force, the one that is pressed sticks up down and touches the switch contact that the pressure corresponds, the user of being convenient for presses, and need not adopt the connecting rod that the structure is complicated and press key transmission to be connected and realize "seesaw" structure, simplify the structure of key switch subassembly, the assembly of being convenient for.

Description

Key switch assembly and intelligent key panel

Technical Field

The application relates to the field of smart homes, in particular to a key switch assembly and an intelligent key panel.

Background

Along with the continuous development of the intelligent home industry, the switch of control electrical apparatus is widely used to the intelligence button panel, for example the user can control the switch of domestic appliance through the intelligence button panel, because the structural constraint of present button switch subassembly, the assembly structure of button switch subassembly is complicated relatively, and is unfavorable for the user to press.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a key switch assembly and an intelligent key panel to solve the problems.

The embodiment of the application realizes the aim through the following technical scheme.

In a first aspect, an embodiment of the present application provides a key switch assembly, including a face shell and a pressing key, the face shell is provided with an installation portion, the pressing key includes a first pressing end, a second pressing end and a connection body, the connection body is connected between the first pressing end and the second pressing end, the connection body is provided with a fitting portion, the fitting portion is rotatably disposed on the installation portion, and when the first pressing end or the second pressing end receives a pressing force, the pressing key rotates relative to the face shell.

In a second aspect, an embodiment of the present application further provides an intelligent key panel, which includes a circuit board and the key switch assembly, where the circuit board is provided with a first switch contact and a second switch contact that face towards a pressed key, the face shell is disposed on the bottom shell, the first pressing end corresponds to the first switch contact to trigger the first switch contact under the action of a pressing force, and the second pressing end corresponds to the second switch contact to trigger the second switch contact under the action of the pressing force.

Compared with the prior art, the push switch subassembly that this application embodiment provided rotationally sets up in the installation department in order to form "seesaw" structure through the connection body that will press the key, when first end and the second of pressing receive the pressing force in pressing the end, press the key and take place to rotate, wherein one that is pressed sticks up down and touches the switch contact that the pressure corresponds, the user of being convenient for presses, and need not adopt the connecting rod that the structure is complicated and press key transmission to be connected and realize "seesaw" structure, simplify the structure of key switch subassembly, the assembly of being convenient for.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a key switch assembly provided in an embodiment of the present application in an assembled state;

fig. 2 is a schematic structural diagram of a key switch assembly provided in an embodiment of the present application in a disassembled state;

fig. 3 is a schematic structural diagram of a pressing key of the key switch assembly according to an embodiment of the present disclosure;

FIG. 4 is an enlarged view of a portion of FIG. 2 at A;

FIG. 5 is an enlarged view of a portion of FIG. 3 at B;

fig. 6 is a schematic structural diagram of an intelligent key panel provided in an embodiment of the present application in an assembled state.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Referring to fig. 1 to 3, the present embodiment provides a key switch assembly 100, which includes a face shell 110 and a pressing key 120, wherein the face shell 110 is provided with an installation portion 112, the pressing key 120 includes a first pressing end 121, a second pressing end 122 and a connecting body 123, the connecting body 123 is connected between the first pressing end 121 and the second pressing end 122, the connecting body 123 is provided with a matching portion 124, the matching portion 124 is rotatably disposed on the installation portion 112, and when the first pressing end 121 or the second pressing end 122 receives a pressing force, the pressing key 120 rotates relative to the face shell 110.

The key switch assembly 100 that this application embodiment provided rotationally sets up in installation department 112 in order to form "seesaw" structure through the connecting body 123 that will press key 120, when first end 121 and the second of pressing receive the pressing force in pressing end 122, press key 120 and take place to rotate, wherein one that is pressed sticks up and touches the switch contact that corresponds, the user of being convenient for presses, and need not adopt the complicated connecting rod of structure and press key 120 transmission to be connected and realize "seesaw" structure, simplify key switch assembly 100's structure, be convenient for assemble.

Referring to fig. 1, in the present embodiment, an outer contour of the face shell 110 may be square, for example, rectangular, the face shell 110 includes a mounting position 111, where the mounting position 111 refers to an area or a mounting structure on the face shell 110 for mounting the pressing key 120, the face shell 110 may include one, two, or more than two mounting positions 111, and one, two, or more than two pressing keys 120 may be mounted on one mounting position 111. In this embodiment, the mounting position 111 may be one, the face housing 110 includes a mounting surface (not shown), the mounting position 111 may be a mounting groove 1113 formed on the mounting surface, wherein the mounting groove 1113 may be formed by a recess of the mounting surface, and the mounting position 111 may be used to mount a plurality of pressing keys 120, wherein the mounting groove 1113 may be a rectangular groove. In addition, the outer contour of the face shell 110 may also be non-square.

In this embodiment, the installation site 111 may be provided with a plurality of first key holes 1111 and second key holes 1112, the number of the first key holes 1111 and the number of the second key holes 1112 may be the same and may be in one-to-one correspondence to form a plurality of sets of installation structures, each set of installation structure is used for assembling the press key 120, the plurality of first key holes 1111 are arranged side by side at intervals along a first straight line direction, the plurality of second key holes 1112 are arranged side by side at intervals along a second straight line direction, wherein the first straight line direction is substantially parallel to the second straight line direction, each set of installation structure includes one first key hole 1111 and one second key hole 1112, the first key hole 1111 and the corresponding second key hole 1112 in each set are arranged at intervals along the first direction, and the first direction may be substantially perpendicular to the first straight line direction and the second straight line direction.

In other embodiments, there may be a plurality of mounting locations 111, for example, each mounting location 111 may be a mounting groove 1113, the mounting locations 111 may be arranged side by side along the first direction at intervals, and a first key hole 1111 and a second key hole 1112 are arranged in each mounting groove 1113. In addition, in other embodiments, the mounting location 111 may also refer to a region of a mounting surface, wherein the mounting surface may be divided into a plurality of regions to form a plurality of mounting locations 111, each mounting location 111 is provided with a first key hole 1111 and a second key hole 1112, and each mounting location 111 may be used to mount one pressing key 120.

Referring to fig. 2, in the present embodiment, the mounting portion 112 may be a plurality of rotating slots, each mounting portion 112 is disposed between one of the first key holes 1111 and the second key hole 1112, and the rotating slots may extend substantially along a direction perpendicular to the first direction. The rotation groove is for engagement with the engagement portion 124 of the push key 120.

Referring to fig. 2 and 3, in the present embodiment, the pressing key 120 is substantially a rectangular plate-shaped structure, the number of the pressing keys 120 may be multiple, the pressing keys 120 may be arranged side by side along a first direction, the first pressing end 121, the second pressing end 122 and the connecting body 123 of each pressing key 120 may be an integrally formed structure, the first pressing end 121 of each pressing key 120 corresponds to a first key hole 1111, and the second pressing end 122 corresponds to a second key hole 1112 opposite to the first key hole 1111. Wherein the pressing key 120 has a rotation axis, wherein the rotation axis may be parallel to the mounting surface of the panel case 110, and the rotation axis may intersect the first direction, for example, both may be substantially perpendicular.

In this embodiment, the matching portion 124 may be a rib structure, wherein the rib structure is adapted to the shape of the rotation slot, the rib structure may be disposed at an intermediate position between the first pressing end 121 and the second pressing end 122, the rib structure may be rotatably embedded in the rotation slot, when the rib structure is disposed in the rotation slot, a certain gap is formed between the pressing key 120 and the face shell 110, the pressing key 120 may rotate with the rib structure as a fulcrum at a certain angle, so as to form a "seesaw" structure, and simultaneously, the rib structure is embedded in the rotation slot to prevent the pressing key 120 from sliding along the first direction during the rotation process. In other embodiments, the mating portion 124 may be a rotational slot and the mounting portion 112 may be a rib structure.

In some embodiments, the engaging portion 124 and the mounting portion 112 may be rib structures, for example, both of which are semi-cylindrical structures, the engaging portion 124 and the mounting portion 112 are provided with rotating shaft holes penetrating through each other, the top of the engaging portion 124 is supported by the face shell 110, the top of the mounting portion 112 is supported by the bottom surface of the pressing member 120, and the rotating shaft holes are penetrated through by the rotating shaft to connect the two.

In this embodiment, the structure of each pressing key 120 may be substantially the same, and the structure will be described by taking one of the pressing keys 120 as an example: first pressing end 121 is provided with a first engaging portion 1211 facing first key hole 1111, first engaging portion 1211 is engaged in first key hole 1111, second pressing end 122 is provided with a second engaging portion 1221 facing second key hole 1112, and second engaging portion 1221 is engaged in second key hole 1112. Specifically, each of the first engaging portion 1211 and the second engaging portion 1221 may include two fasteners, where the two fasteners are disposed on a surface of the first pressing end 121 facing the first key hole 1111 at opposite intervals, and the hook structures of the two fasteners are disposed facing two opposite directions respectively and are both engaged in the first key hole 1111 to selectively abut against the face shell 110, so as to prevent the first pressing end 121 from being separated from the first key hole 1111; the two fasteners are disposed on the surface of the first pressing end 121 facing the second key hole 1112 at an opposite interval, and the hook structures of the two fasteners extend in two opposite directions respectively and are fastened in the second key hole 1112 to selectively abut against the face shell 110, so as to prevent the second pressing end 122 from separating from the second key hole 1112.

Referring to fig. 3, in the present embodiment, the pressing key 120 includes a pressing surface 124, wherein the pressing surface 124 may be a plane, and the pressing surface 124 is formed on a side of the first pressing end 121 away from the first key hole 1111 and a side of the second pressing end 122 away from the second key hole 1112. The first engaging portion 1211 can prevent the first pressing end 121 from being separated from the first key hole 1111 during rotation, and the second engaging portion 1221 can prevent the second pressing end 122 from being separated from the second key hole 1112 during rotation.

During assembly, the pressing key 120 is disposed in the mounting groove 1113, the protruding rib structure is rotatably embedded in the rotating groove, the two fasteners of the first pressing end 121 are all fastened in the first key hole 1111, and the two fasteners of the second pressing end 122 are all fastened in the second key hole 1112. When the key 120 is not pressed, the pressing surface 124 may be flush with the mounting surface, so that the key 120 may be flush with the face shell 110, and the appearance is more concise. When the first pressing end 121 is subjected to a pressing force, the pressing key 120 rotates relative to the face shell 110, two buckles arranged on the first pressing end 121 move towards a direction far away from the face shell 110 in the process of pressing down the first pressing end 121, at this time, the second pressing end 122 tilts upwards and can be separated from a corresponding switch contact, two buckles arranged on the second pressing end 122 move towards a direction close to the face shell 110, when the buckles move to abut against the face shell 110, the pressing key 120 rotates to the maximum rotation stroke, at this time, the first pressing end 121 can trigger the corresponding switch contact in the process of pressing down; correspondingly, when the second pressing end 122 receives a pressing force, the pressing key 120 rotates relative to the face shell 110, the two buckles arranged at the second pressing end 122 move towards a direction far away from the face shell 110, the first pressing end 121 tilts upwards and can be separated from the switch contact corresponding to the first pressing end, the two buckles arranged at the first pressing end 121 move towards a direction close to the face shell 110, when the second pressing end moves to abut against the face shell 110, the pressing key 120 rotates to the maximum rotation stroke, and at this time, the second pressing end 122 can trigger the switch contact corresponding to the second pressing end in the process of pressing down.

In some embodiments, as shown in fig. 4 and 5, in order to accurately assemble the pressing key 120 to the face housing 110 to avoid the mis-assembly direction, the face housing 110 may be provided with a fool-proof portion 114, and the pressing key 120 may be provided with a fool-proof engagement portion 125 engaged with the fool-proof portion 114. As an example, the fool-proof portion 114 may include a first fool-proof groove 1141 and a second fool-proof groove 1142, wherein the first fool-proof groove 1141 and the second fool-proof groove 1142 may be respectively one in number, the first fool-proof groove 1141 and the second fool-proof groove 1142 are disposed in a staggered manner, the first fool-proof groove 1141 and the second fool-proof groove 1142 may be disposed along two different directions, or may be disposed along two parallel directions but staggered with each other, the installation portion 112 includes a first embedded portion 1251 and a second embedded portion 1252, the first embedded portion 1251 corresponds to the first fool-proof groove 1141, and the second embedded portion 1252 corresponds to the second fool-proof groove 1142. As another example, the fool-proof portion 114 may include two first fool-proof grooves 1141 and two second fool-proof grooves 1142, both the two first fool-proof grooves 1141 and the two second fool-proof grooves 1142 may be disposed between the first key hole 1111 and the second key hole 1112, wherein the two first fool-proof grooves 1141 and the two second fool-proof grooves 1142 may be respectively disposed along two parallel directions at intervals side by side, wherein an interval between the two first fool-proof grooves 1141 is different from an interval between the two second fool-proof grooves 1142, for example, an interval between the two first fool-proof grooves 1141 may be smaller than an interval between the two second fool-proof grooves 1142, the mounting portion 112 may include two first embedded portions 1251 and two second embedded portions 1252, the two first embedded portions 1251 correspond to the two first fool-proof grooves 1141 one to one, and an interval between the two first embedded portions may be substantially the same as an interval between the two first fool-proof grooves 1141, two first portions 1251 of establishing inlay respectively and locate two first fool-proof groove 1141, two second portions 1252 of establishing and two second fool-proof grooves 1142 one-to-one, and the interval between the two can be roughly the same with the interval between two second fool-proof grooves 1142, two second portions 1252 of establishing inlay respectively and locate two second fool-proof grooves 1142. When the key 120 is pressed in the wrong direction, the distance between the two second embedding portions 1252 is not corresponding to the distance between the two first fool-proof grooves 1141, and the distance between the two first embedding portions 1251 is not corresponding to the distance between the two second fool-proof grooves 1142, so that the key 120 cannot be normally assembled on the face shell 110, and as long as the two first embedding portions 1251 are corresponding to the two first fool-proof grooves 1141 and the two second embedding portions 1252 are corresponding to the two second fool-proof grooves 1142, the key 120 can be correctly assembled on the face shell 110. In some embodiments, the two first fool-proof grooves 1141 and the two second fool-proof grooves 1142 are staggered, wherein the two first fool-proof grooves 1141 and the two second fool-proof grooves 1142 may not be located on the same straight line, so that the first embedded portion 1251 cannot correspond to the second fool-proof grooves 1142, and the second embedded portion 1252 cannot correspond to the first fool-proof grooves 1141. For example, in some embodiments, the distances from the matching portion 124 to the two ends of the pressing key 120 are not equal, that is, the pressing key 120 is asymmetrically and rotatably disposed on the mounting portion 112, at this time, the first pressing end 121 and the second pressing end 122 can correspond to the first key hole 1111 and the second key hole 1112 of the mounting portion 111 only if they are respectively mounted at corresponding positions, and by providing the fool-proof portion 114 and the fool-proof matching portion 125 matching with the fool-proof portion 114, the user can recognize the correct mounting direction of the pressing key 120, and the pressing key 120 cannot be normally mounted on the face shell 110 due to the wrong mounting direction is avoided.

In some embodiments, as shown in fig. 3, the bottom surface of the first pressing end 121 facing the face housing 110 is provided with a first touch rib 1261, and the bottom surface of the second pressing end 122 facing the face housing 110 is provided with a second touch rib 1262. As an example, the first touching and pressing rib 1261 and the second touching and pressing rib 1262 may be cross-shaped, circular rib or rib structures with other shapes, and by providing the first touching and pressing rib 1261 and the second touching and pressing rib 1262, the first touching and pressing rib 1261 and the second touching and pressing rib 1262 may be used for interference fit with the corresponding switch contact, that is, the first touching and pressing rib 1261 and the second touching and pressing rib 1262 may generate slight pre-pressure on the corresponding switch contact, so that a user only needs to press the first pressing end 121 or the second pressing end 122 with a small pressing force, and the switch contact corresponding to the first pressing end 121 or the second pressing end 122 may be quickly triggered, so as to reduce the time delay of the triggering process and improve the sensitivity of the switch contact. The first pressing rib 1261 and the second pressing rib 1262 may be elastic structures, so that hard contact between the first pressing end 121 and the second pressing end 122 and the switch contact can be avoided, and in the process of pressing the first pressing end 121 or the second pressing end 122, the first pressing rib 1261 or the second pressing rib 1262 may be deformed to provide a certain distance of stroke space for the first pressing end 121 or the second pressing end 122, so as to improve the touch feeling and avoid abnormal sound in the pressing process.

Referring to fig. 6, an embodiment of the present invention further provides an intelligent key panel 200, which may include a bottom case 210, a circuit board 220 and the key switch assembly 100, where the bottom case 210 has an accommodating cavity 211, the circuit board 220 is accommodated in the accommodating cavity 211, the circuit board 220 has a first switch contact 221 and a second switch contact 222 facing the pressing key 120, the face case 110 is disposed on the bottom case 210 and may cover the entire accommodating cavity 211 to prevent the circuit board 220 and other devices in the accommodating cavity 211 from being exposed, the first key hole 1111 and the second key hole 1112 on the face case 110 are both communicated with the accommodating cavity 211, the first pressing end 121 corresponds to the first switch contact 221 to trigger the first switch contact 221 under the action of a pressing force, and the second pressing end 122 corresponds to the second switch contact 222 to trigger the second switch contact 222 under the action of a pressing force. The first switch contact 221 and the second switch contact 222 may be spring contacts, for example, the first switch contact 221 may be pressed down by a first touch pressure and may trigger a first control signal, and the first switch contact 221 may be restored to a home position by a second touch pressure and trigger a second control signal, where the first control signal and the second control signal may be different. Each of the first switch contact 221 and the second switch contact 222 may also be custom associated with one or more control commands. As an example, when the first switch contact 221 is acted by one touch pressure, a first control signal is triggered to control the corresponding household appliance to be turned on; when the second contact pressure acts, the first switch contact 221 returns to the original position, and triggers the second control signal to control the turned-on household appliance to be turned off.

In some embodiments, the smart key panel 200 further includes a wireless signal module 223, the first switch contact 221 and the second switch contact 222 may be electrically connected to the wireless signal module 223 to trigger the wireless signal module 223 to send a control signal, and a user may trigger different control signals by touching and pressing the first switch contact 221 and the second switch contact 222 to realize mode switching of different smart home scenes, where the wireless signal module 223 may be wirelessly connected to the relay module, and the wireless signal module 223 may generate the control signal to the relay module to control the corresponding home devices to be turned on or turned off, where the home devices may be smart homes, such as air conditioners, refrigerators, curtains, televisions, and the like.

In some embodiments, the smart key panel 200 may further include a fixing bracket (not shown), wherein the fixing bracket may be provided with 1 or more mounting holes, each mounting hole may be used for mounting one key switch assembly 100, a plurality of key switch assemblies 100 may be arranged side by side, and two adjacent key switch assemblies 100 may be attached to each other or separated by a partition.

In some embodiments, the smart key panel 200 may not include the bottom case 210, the front case 110 may not have the first key hole 1111 and the second key hole 1112, and the uniform receiving cavity 211 may be communicated with each other, and the first switch contact 221 and the second switch contact 222 on the circuit board 220 may be disposed between the pressing key 120 and the front case 110 and respectively disposed corresponding to the first pressing end 121 or the second pressing end 122. When the first pressing end 121 is subjected to the pressing force, the first pressing end 121 moves toward the first switch contact 221 to trigger the first switch contact 221; when the second pressing end 122 is subjected to the pressing force, the second pressing end 122 moves toward the second switch contact 222 to trigger the first switch contact 221.

To sum up, the intelligent key panel 200 provided by the embodiment of the present application is provided with the above-mentioned key switch assembly 100, and because the connection body 123 of the key switch assembly 100, which passes through the pressing key 120, is rotatably disposed on the mounting portion 112 to form a "seesaw" structure, it is not necessary to adopt a connecting rod with a complex structure to be in transmission connection with the pressing key 120 to realize the "seesaw" structure, so that the structure of the whole intelligent key panel 200 is simplified, and the assembly is facilitated.

The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.

Claims

1. A key switch assembly, comprising:

a face shell provided with a mounting portion; and

the pressing key comprises a first pressing end, a second pressing end and a connecting body, wherein the connecting body is connected between the first pressing end and the second pressing end, the connecting body is provided with a matching portion, the matching portion is rotatably arranged on the mounting portion, and when the first pressing end or the second pressing end is pressed by a pressing force, the pressing key rotates relative to the face shell.

2. The key switch assembly according to claim 1, wherein the mounting portion is a rotation groove extending in a direction perpendicular to a rotation axis of the key, the engagement portion is a rib structure rotatably fitted in the rotation groove, or the mounting portion is a rib structure fitted in the rotation groove.

3. The key switch assembly according to any one of claims 1-2, wherein the face shell defines a first key hole and a second key hole, the first key hole and the second key hole being spaced side-by-side along a first direction, wherein the first direction intersects the axis of rotation of the depressed key.

4. The key switch assembly of claim 3, wherein the first pressing end has a first engaging portion facing the first key hole, the first engaging portion is engaged with the first key hole, the second pressing end has a second engaging portion facing the second key hole, and the second engaging portion is engaged with the second key hole.

5. The key switch assembly of any one of claims 1-2, wherein the face shell is provided with a fool-proof portion, and the push key is provided with a fool-proof engagement portion that engages with the fool-proof portion.

6. The key switch assembly of claim 5, wherein the fool-proof portion comprises a first fool-proof slot and a second fool-proof slot, the first fool-proof slot and the second fool-proof slot being staggered; the installation department includes that the first portion of establishing and the second of inlaying inlays establishes the portion, the first portion of establishing of inlaying inlays locates first fool-proof groove, the second inlays establishes the portion and inlays locates the second fool-proof groove.

7. The key switch assembly according to any one of claims 1-2, wherein the first pressing end has a first touch rib on a bottom surface facing the face housing, and the second pressing end has a second touch rib on a bottom surface facing the face housing.

8. The keyswitch assembly of any one of claims 1-2, wherein the face housing includes a mounting surface, the face housing includes a mounting location, the mounting location is a mounting slot formed in the mounting surface, the push key is disposed in the mounting slot, the push key includes a push surface, and the push surface is flush with the mounting surface.

9. An intelligent key panel, comprising a circuit board and the key switch assembly as claimed in any one of claims 1 to 8, wherein the circuit board is provided with a first switch contact and a second switch contact facing the pressed key, the face shell is disposed on the bottom shell, the first pressing end corresponds to the first switch contact to trigger the first switch contact under the action of a pressing force, and the second pressing end corresponds to the second switch contact to trigger the second switch contact under the action of a pressing force.

10. The intelligent key panel of claim 9, further comprising a wireless signal module, wherein the first switch contact and the second switch contact are electrically connected to the wireless signal module to trigger the wireless signal module to send a control signal.