CN113571359A

CN113571359A - SBR microswitch module

Info

Publication number: CN113571359A
Application number: CN202010350760.0A
Authority: CN
Inventors: 刘二军
Original assignee: Huizhou Greetech Electronics Co ltd
Current assignee: Huizhou Greetech Electronics Co ltd
Priority date: 2020-04-28
Filing date: 2020-04-28
Publication date: 2021-10-29

Abstract

The invention discloses an SBR microswitch module, which comprises a mounting seat; the micro switch assembly is a standard component, is detachably connected with the mounting seat and can be in adaptive connection with mounting seats in any shapes; the micro-switch assembly includes: a keycap; the shell is connected with the keycap in a sliding manner; the reset spring is respectively propped against the keycap and the shell and is used for resisting the opposite movement of the keycap and the shell; the micro switch is arranged in the shell and has two states of connection and disconnection, and each state corresponds to the operation state of the keycap and the shell; one end of the balancing rod is arranged on the keycap, and the other end of the balancing rod is arranged on the shell and is used for driving the whole keycap to move up and down in parallel; the SBR microswitch module enables the microswitch component to be matched with mounting seats of different shapes, and the process standardization degree is high; and through the arrangement of the balance rod, no matter any position of the keycap is pressed, the force and the stroke are uniform, and the conversion sensitivity of the microswitch is improved.

Description

SBR microswitch module

Technical Field

The invention relates to the technical field of automobile seat sensing systems, in particular to an SBR microswitch module.

Background

The seat sensing system is generally installed in a motor vehicle seat, and is composed of a sensing device, a wire harness and a connecting device, and is used for judging the occupancy condition of a passenger on the seat. The method is applied to the situations such as safety belt alarm, automatic taxi charging, air bag sensing devices and driver off-seat situations.

The seat sensing system in the current market has two design schemes, namely, the seat sensing system designed based on a microswitch and the seat sensing system designed based on a film resistor, wherein the seat sensing system designed based on the microswitch is arranged on a seat spring frame; a seat sensing system designed based on a film resistor is arranged on the foaming and under the leather seat.

The operating principle of the seat sensing system based on the micro switch is as follows: the key cap transmits force to the button to trigger the microswitch, so that the circuit is switched on and off, and signals are transmitted. The existing design structure has the following defects:

1. the mounting seat and the micro switch component are designed into an integral body, different micro switch components are required to be designed for the mounting seats with different shapes to be matched with the mounting seats, the process standardization is difficult to realize, and the cost is high.

2. When four corners of the key cap are triggered, the stroke and force for operating the micro switch are different greatly from the center of the key cap, and the consistency and the response sensitivity of the operation are poor.

Disclosure of Invention

The invention provides an SBR microswitch module with high process standardization, high operation consistency and sensitive reaction, which comprises

A mounting seat;

the micro switch assembly is a standard component, is detachably connected with the mounting seat, and is in adaptive connection with the mounting seat in any shape.

In one embodiment, the microswitch assembly comprises:

a keycap;

the shell is connected with the keycap in a sliding mode;

the return spring is respectively propped against the keycap and the shell and is used for resisting the opposite movement of the keycap and the shell;

the micro switch is arranged on the shell, has two electric states of closing and opening, each electric state corresponds to the operation state of the keycap and the shell, and outputs signals through the connector;

and one end of the balance rod is arranged on the keycap, and the other end of the balance rod is arranged on the shell and is used for driving the keycap to move up and down in parallel.

In one embodiment, the housing has at least two mounting portions thereon, and the two mounting portions are symmetrically arranged.

In one embodiment, the key cap is provided with a clamping piece for clamping one end of the balance bar.

In one embodiment, the housing has a fixing member for fixing the other end of the balance bar.

In one embodiment, the stabilizer bar is one of a long kidney shape, a U shape, or a trapezoid shape.

In one embodiment, the keycap is provided with a guide member, and the shell is provided with a guide sleeve for accommodating the guide member.

In one embodiment, the mounting portion is a trapezoidal body.

In one embodiment, the clamping piece is provided with a clamping part, and one end of the balance bar is clamped on the clamping part.

In one embodiment, the fixing piece is provided with a notch, and the other end of the balancing rod is rotatably arranged in the notch.

The microswitch component is designed into a standard module and is detachably connected with the mounting seat through the connector to output signals, so that the microswitch component can be matched with mounting seats of different shapes, the process standardization degree is high, and the cost is saved; moreover, through the arrangement of the balance rod, no matter any position of the keycap is pressed, the whole keycap can be pressed downwards in parallel, the force and the stroke are uniform, the conversion sensitivity of the micro switch is improved, and the signal output is accurate.

Drawings

FIG. 1 is a schematic view of an assembly structure of an SBR microswitch module according to an embodiment of the invention;

FIG. 2 is an exploded view of an SBR microswitch module according to an embodiment of the present invention;

FIG. 3 is a schematic view of a key cap of a micro switch assembly according to an embodiment of the present invention;

FIG. 4 is a schematic view of the structure of the casing of the microswitch assembly according to one embodiment of the present invention;

fig. 5 is a schematic cross-sectional structure diagram of an SBR microswitch module according to an embodiment of the present invention.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in FIG. 1 and FIG. 4, a micro-switch module comprises

A mounting base 100;

the micro switch assembly 200 is a standard component, is detachably connected with the mounting seat 100, and can be adaptively connected with the mounting seat 100 in any shape.

The utility model provides a micro-gap switch subassembly 200 is the standard component, and the standardized size of each part of micro-gap switch subassembly 200 forms standardized module after the combination promptly, makes micro-gap switch subassembly 200 size standardized, and mounting hole 110 has been seted up to mount pad 100, and micro-gap switch subassembly 200 size shape and mounting hole 110's shape size looks adaptation can use with the mount pad 100 cooperation installation of different appearances.

The standard component that involves in this application specifically means confirms (standardizes) micro-gap switch subassembly 200's external dimension/installation size, simultaneously, to the mount pad 100 of different models/producer/requirement, all is provided with the mounting hole 110 with the same size of micro-gap switch subassembly 200 adaptation, like this, can conveniently produce and install, simultaneously, it is more convenient at the change in-process, has the replaceability.

Any shape, namely, the shape of the mounting base 100 during use can be designed or modified according to actual requirements, and the mounting base 100 is provided with the mounting hole 100 matched with the microswitch assembly 200 so as to facilitate the assembly of the two.

The microswitch assembly 200 comprises:

a key cap 210;

a housing 220 slidably coupled to the keycap 210;

a return spring 230, respectively abutting against the key cap 210 and the housing 220, for resisting the opposite movement of the key cap 210 and the housing 220;

a micro switch 240, wherein the micro switch 240 is mounted on the housing 220 and has two electrical states of being closed and opened, and each electrical state corresponds to the key cap 210 and the operating state of the housing 220;

and one end of the balance rod 250 is mounted on the keycap 210, and the other end of the balance rod 250 is mounted on the shell 220, so as to drive the keycap 210 to move up and down integrally.

As shown in fig. 2, the key cap 210: the sliding installation is on the inner layer or the outer layer of the shell 220, and the sliding installation is matched with the shape of the shell 220, and can be fixed sliding installation or detachable sliding installation on the inner layer or the outer layer of the shell 220. Two sides of the key cap 210 are at least provided with two hooks 211 for being clamped on the shell 220, and two sides of the hooks 211 are provided with two clamping grooves 212, so that the hooks 211 have certain elasticity, and the key cap 210 can be conveniently detached from the shell 220.

As shown in fig. 3, the housing 220: the housing 220 is installed in cooperation with the installation seat 100, and has a groove 221 for accommodating the hook 211, so that the hook 211 slides in the groove 221, and a stopper 222 is disposed in the groove 221 to prevent the hook 211 from sliding out of the groove 221. The hook 211 is clamped on the groove 221, and one end of the hook 211 abuts against the groove 221, so that continuous friction is generated between the hook 211 and the groove 221 in the process that the keycap 210 moves up and down, and the hook is abraded for a long time. Further, in order to overcome the above situation, the position of the groove 221 may be changed to a through hole, so that friction between the hook 211 and the bottom surface of the groove 221 may be avoided. In this embodiment, the contact surface between the hook 211 and the groove 221 is made into a planar structure, so as to reduce the friction force.

Return spring 230: one end of the return spring 230 is sleeved on the protruding shaft 213 of the key cap 210, and the other end is received in the boss 223 of the housing 220. In one embodiment, the return spring 230 is a spring.

The boss 223: the shape of the boss 223 is matched with that of the return spring 230, so that the return spring 230 is effectively prevented from easily generating dislocation, and the normal use of the microswitch module is influenced.

The microswitch 240: the microswitch 240 is a microswitch, one end of which is connected to any connector 300 by a wire, and has two states of open and closed. When the keycap 210 moves towards the shell 220 and the point contact 214 on the keycap 210 touches the contact of the micro switch 240, the micro switch 240 is closed; when the microswitch 240 contact is left, the microswitch 240 is open.

The balance bar 250: the balance bar 250 may be made of a metal material. One end is fixedly or detachably mounted on the key cap 210, and the other end is fixedly or detachably mounted on the housing 220.

In one embodiment, the balance bar 250 is one of a long kidney or a U or trapezoid.

The U-shaped element used in this embodiment has three common ends, namely a first end, a second end and a third end, wherein the first end and the second end are respectively installed on the key cap 210 and are symmetrically arranged with the point contact 214 as a central axis, and the third end is installed on the housing 220. The first end and the second end move up and down along with the movement of the key cap 210, and the third end is fixed or rotates. For example: when the balance bar 250 has a long kidney-shaped structure, one side of the balance bar 250 is fixedly or detachably mounted on the key cap 210, and the other side opposite thereto is fixedly or detachably mounted on the housing 220.

In one embodiment, a detachable connection is used. The key cap 210 is provided with a clamping piece 215 for clamping one end of the balance bar 250; the housing 220 has a fixing member 224 for fixing the other end of the balance bar 250.

The clamping piece 215 is of a clamp-shaped structure, a clamping part 2151 is arranged on the clamping piece 215, and one end of the balance rod 250 is clamped on the clamping part 2151;

the contact surface of the clamping part 2151 and the balance bar 250 is a plane structure, and the balance bar 250 is clamped on the clamping part 2151. Further, clip 215 and balance bar 250 may also be an interference fit.

The fixing member 224 is provided with a notch 2241, and the other end of the balance bar 250 is rotatably installed in the notch 2241. The notch 2241 has an arc-shaped structure, has a narrow entrance and a wide middle structure, and cannot make the other end of the balance bar 250 easily fall off from the fixing member 224. The notch 2241 is provided with an inclined surface, so that the balance bar 250 slides into the notch 2241 along the inclined surface during installation, and the installation of the balance bar 250 is convenient.

When a passenger sits on the automobile seat, the cushion presses the keycap 210 to move towards the direction of the shell 220, the return spring 230 is compressed, the clamping piece 215 drives the balance rod 250 to move towards the direction of the shell 220, the keycap 210 translates towards the direction of the shell 220 until the point contact piece 214 touches the contact of the microswitch 240, the microswitch 240 is closed, a signal is sent to the connector 300 through a lead, and the connector 300 sends a signal to the processor, so that the specific position of the passenger for riding the automobile is described. When the passenger leaves the car seat, the return spring 230 is deformed again, so that the key cap 210 is restored to the original position.

In this way, the microswitch module designs the microswitch assembly 200 into a standard module and is detachably connected with the mounting base 100, so that the microswitch assembly 200 can be matched with mounting bases 100 of different shapes, the process standardization degree is high, and the cost is saved; moreover, through the arrangement of the balance rod 250, no matter any position of the keycap 210 is pressed, the whole keycap 210 can be pressed in parallel, the force and the stroke are uniform, the conversion sensitivity of the micro switch is improved, and the module signal output is accurate.

In one embodiment, the key cap 210 has a guide 216 thereon, and the housing 220 has a guide sleeve 225 thereon, wherein the guide sleeve 225 is used for accommodating the guide 216.

The guide 216, the guide 216 may be a cylindrical structure or a rectangular parallelepiped structure;

and a guide sleeve 225 adapted to the size and shape of the guide member 216.

Thus, the guide 216 and the guide sleeve 225 are matched to ensure that the direction of the keycap 210 translating towards the shell 220 is more accurate without deviation, and the point contact piece 214 can accurately touch the contact of the micro switch 240, so that the micro switch module is more accurate.

In one embodiment, the housing 220 has at least two mounting portions 226 thereon, and the two mounting portions 226 are symmetrically disposed.

In one embodiment, the mounting portion 226 is a trapezoidal body.

Mounting portion 226: the mounting portion 226 is used to mount the entire microswitch module on the mounting base 100. At least two mounting portions 226 need to be symmetrically disposed. In this embodiment, 6 mounting portions 226 are used, so that the applicability is wider, and the mounting device can be applied to mounting operations of mounting portions 226 of any shapes. Meanwhile, the whole microswitch assembly 200 is a standard component, only the standard microswitch assembly 200 needs to be produced, and the mounting seat 100 matched with the microswitch assembly does not need to be produced at the same time, so that the working time is reduced.

The mounting seat 100 is provided with a mounting groove 111 for mounting the mounting portion 226.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The utility model provides a SBR micro-gap switch module, includes mount pad and micro-gap switch subassembly, the micro-gap switch subassembly is the standard component, with the mount pad is for dismantling the connection, with any shape but mount pad adaptation is connected.

2. The SBR microswitch module of claim 1, wherein: the micro-switch assembly includes: the key cap, the shell, the reset spring, the balance rod, the micro switch and the connector assembly; one end of the balancing rod is installed on the keycap, and the other end of the balancing rod is installed on the shell and used for driving the keycap to move up and down in parallel.

3. The SBR microswitch module of claim 2, wherein: the casing is provided with at least two installation parts which are symmetrically arranged.

4. The SBR microswitch module of claim 2, wherein: the key cap is provided with a clamping piece for clamping one end of the balancing rod.

5. The SBR microswitch module of claim 2, wherein: the shell is provided with a fixing piece for fixing the other end of the balancing pole.

6. The SBR microswitch module of claim 2, wherein: the balancing pole is one of long waist shape or U-shaped or trapezoidal.

7. The SBR microswitch module of claim 2, wherein: the keycap is provided with a guide piece, the shell is provided with a guide sleeve, and the guide sleeve is used for containing the guide piece.

8. The SBR microswitch module of claim 2, wherein: the clamping piece is provided with a clamping part, and one end of the balance rod is clamped on the clamping part.

9. The SBR microswitch module of claim 2, wherein: the fixing piece is provided with a notch, and the other end of the balancing rod is rotatably arranged in the notch.

10. The SBR microswitch module of claim 3, wherein: the installation part is a trapezoidal body.