CN207529856U - A kind of construction of switch and automotive back accelerator control system - Google Patents

Abstract

It is unstable for existing construction of switch is overcome to there is pressing feel, the problem of false triggering easily occurs, the utility model provides a kind of construction of switch, including button, sliding part, balance element and signal generation plate, the balance element includes fixed frame and balance plate, the fixed frame is fixed on the wiring board, the balance plate deflection it is connected to the inside of the fixed frame, the one end of the sliding part is abutted with the button, the other end of the sliding part is abutted with the balance plate, the silica gel push-button of balance plate described in face is provided on the signal generation plate, the sliding part can be in the one preset direction displacement of driving lower edge of the button, the balance plate to be driven to push the silica gel push-button in a manner of relatively described fixed frame deflection deformation.The utility model additionally provides the automotive back accelerator control system including above-mentioned construction of switch.Construction of switch provided by the utility model has relatively stable pressing feel, and reliability is higher.

Description

A kind of construction of switch and automotive back accelerator control system

Technical field

The utility model belongs to control field of switch equipment, and in particular to a kind of construction of switch and automotive back door control system System.

Background technology

In electrical control, construction of switch refers to that one can make open circuit, make current interruptions or it be made to flow to other The electronic component of circuit, due to its special control action, construction of switch is widely used in each electronically or mechanically field.

The unit for having more needs automatically controlled on automobile, such as vehicle window, skylight, back door or car light, it usually needs setting Switch is controlled accordingly, it can be common that using microswitch structure, setting is connected with the switch button of spring, presses down on Switch button causes button application pressure micro- so as to which the stent with its installation that is linked be driven to move downward microswitch The movable contact and stationary contact of dynamic switch are in contact, and circuit is connected and generates a control signal, and microswitch is extensive after release button Multiple original state is a working cycles.

Since the contact point of microswitch is smaller, the contact area for leading to running part is small, is easily sent out in transmission process There is the problem of pressing feel is unstable, and microswitch carries out switch motion with defined stroke and pressure in raw deflection Contact mechanism, so the stroke of construction of switch is single, power sense is realized by the power of spring, and movable contact and quiet in microswitch The spacing of contact is small, and false triggering easily occurs.

Utility model content

There are problems that pressing that feel is unstable, easy generation false triggering for existing construction of switch, the utility model carries A kind of construction of switch and automotive back accelerator control system are supplied.

Technical solution is as follows used by the utility model solves above-mentioned technical problem：

A kind of construction of switch is provided, generates plate including button, sliding part, balance element and signal, the balance element includes solid Determine framework and balance plate, the fixed frame is fixed on the signal generation plate, is connected to institute to the balance plate deflection State the inside of fixed frame, the one end of the sliding part is abutted with the button, the other end of the sliding part with it is described Balance plate abuts, and the silica gel push-button of balance plate described in face is provided on the signal generation plate, the sliding part can be described The one preset direction displacement of driving lower edge of button, to drive the balance plate in a manner of relatively described fixed frame deflection deformation The silica gel push-button is pushed, and after the power releasing on the button is acted on, the balance plate elastic recovery simultaneously drives institute State sliding part return.

Optionally, the signal generation plate includes keypad and wiring board, and the keypad and wiring board are bonded to each other, institute It states silica gel push-button to be set on keypad, the signal generating circuit for generating control signal, institute is provided on the wiring board It states silica gel push-button and the signal generating circuit is connected when pushing, the silica gel push-button disconnects the signal generation electricity when replying Road.

Optionally, signal wire interface, the signal wire interface and the signal generating circuit are provided on the wiring board Electrical connection.

Optionally, the construction of switch further includes the housing and bottom cover of interconnection, the housing and the bottom cover it Between be formed with assembling cavity, the balance element and be set in the assembling cavity with signal generation plate, set on the housing There is a boss, the both sides of the button are rotatablely connected to the outer wall of the boss, are provided in the boss along described pre- The pilot hole of set direction extension, the sliding part are at least partially disposed in the pilot hole, and the button is far from its rotation axis The end in direction is abutted against with the sliding part, and the left-right rotation of the button is to drive the sliding part along the pilot hole Displacement.

Optionally, sliding part is multiple, and multiple sliding parts include the first sliding part and the second sliding part, and described first Sliding part and second sliding part are connected to two ends of the button far from the button rotation axis respectively, described flat The plate that weighs is multiple, and multiple balance plates include the first balance plate and the first balance plate, and first sliding part is connected to described On first balance plate, second sliding part is connected on first balance plate, and the silica gel push-button is multiple described to be multiple Silica gel push-button includes the first silica gel push-button, the second silica gel push-button, third silica gel push-button and the 4th silica gel push-button, first silica gel Button and the second silica gel push-button are connected to two ends of first balance plate, the third silica gel push-button and the 4th silicon respectively Glue button is connected to two ends of first balance plate respectively.

Optionally, the construction of switch has further included top shell, and the top shell has integrally formed planar portions and cavity portion, The cavity portion is socketed on the outside of the housing, and storage tank is provided in the planar portions, through-hole is offered in the storage tank, The boss passes through the through-hole, and the button is located in the storage tank.

Optionally, the sliding part includes nip portion, the first lead and the second lead, first lead and the Two leads are arranged in parallel in the both ends of the nip portion, and first lead and the second lead are passed through on the boss Pilot hole and abut to the button, the nip portion abuts the balance plate.

Optionally, flexible support rod is set on the balance plate, the balance plate and the fixed frame it Between be connected with each other by the support rod.

Optionally, the construction of switch has further included light guide, is provided with transmittance section on the button, on the wiring board Light source is provided with, one end of the light guide is towards the light source, and the other end of the light guide is extended in the button, institute Light that light source sends out is stated to conduct in the button and by the transmittance section light extraction of the button through the light guide.

Optionally, the fixed frame is snapped connection with the wiring board, and the keypad is fixed on the fixed frame Between the wiring board.

A kind of automotive back accelerator control system, including construction of switch as described above.

According to construction of switch provided by the utility model, using conducting structure of the silica gel push-button as signal generation plate, carry It has supplied certain conducting stroke, backhaul elastic force and has preferably pressed feel, lowered noise during switching manipulation, had preferable anti- Outlet capacity；Balance element is provided between the silica gel push-button and the sliding part, can be made by the balance plate on balance element Switching driving member between sliding part and silica gel push-button for increasing the contact area with the sliding part, while will slide The pressure that part is applied on balance plate is equably fed back on silica gel push-button, so that the uniform force of pressing process, avoids There is a situation where swings and dislocation during pressing for silica gel push-button or sliding part, produce relatively stable pressing feel, by In balance plate and fixed frame elastic connection, be conducive to increase the resistance of button pressed, in button backhaul, the balance plate Certain backhaul elastic force is capable of providing, is a kind of high switch designs side of Reliability comparotive so as to reduce there is a situation where accidentally touching Case.

Description of the drawings

Fig. 1 is the structure diagram for the construction of switch that one embodiment of the utility model provides；

Fig. 2 is the diagrammatic cross-section for the construction of switch that one embodiment of the utility model provides；

Fig. 3 is the exploded perspective view for the construction of switch that one embodiment of the utility model provides；

Fig. 4 is the structure diagram of its top shell of the construction of switch of one embodiment of the utility model offer；

Fig. 5 is the structure diagram of its housing of the construction of switch of one embodiment of the utility model offer；

Fig. 6 is the structure diagram of its bottom cover of the construction of switch of one embodiment of the utility model offer；

Fig. 7 is the structure diagram of its button of the construction of switch of one embodiment of the utility model offer；

Fig. 8 is the structure diagram of its sliding part of the construction of switch of one embodiment of the utility model offer；

Fig. 9 is the structure diagram of its balance element of the construction of switch of one embodiment of the utility model offer；

Figure 10 is the structure diagram of its keypad of the construction of switch of one embodiment of the utility model offer；

Figure 11 is the structure diagram of its wiring board of the construction of switch of one embodiment of the utility model offer.

Reference numeral in Figure of description is as follows：

1st, top shell；11st, planar portions；111st, storage tank；112nd, through-hole；12nd, cavity portion；2nd, housing；21st, boss；211、 Pilot hole；212nd, shaft；3rd, bottom cover；31st, telltale hole；4th, button；41st, turn hole；42nd, concave-shaped arc surface；5th, sliding part；5a, first Sliding part；5b, the second sliding part；51st, nip portion；52nd, the first lead；53rd, the second lead；6th, balance element；61st, it balances Plate；61a, the first balance plate；61b, the second balance plate；62nd, fixed frame；63rd, support rod；71st, keypad；711st, silica gel is pressed Key；711a, the first silica gel push-button；711b, the second silica gel push-button；711c, third silica gel push-button；711d, the 4th silica gel push-button； 712nd, transparent cover plate；72nd, wiring board；721st, signal wire interface；722nd, light source；8th, light guide.

Specific embodiment

The technical issues of in order to solve the utility model, technical solution and advantageous effect are more clearly understood, below With reference to accompanying drawings and embodiments, the present invention is further described in detail.It should be appreciated that specific implementation described herein Example is only used to explain the utility model, is not used to limit the utility model.

Referring to shown in Fig. 1~Figure 11, present embodiment discloses a kind of construction of switch, including button 4, sliding part 5, balance element 6 and signal generation plate 7, the balance element 6 include fixed frame 62 and balance plate 61, the fixed frame 62 is fixed on the letter On number generation plate 7, it is connected to 61 deflection of balance plate the inside of the fixed frame 62, one end of the sliding part 5 Portion is abutted with the button 4, and the other end of the sliding part 5 is abutted with the balance plate 61, is set on the signal generation plate 7 The silica gel push-button 711 of balance plate 61 described in face is equipped with, the sliding part 5 can be in the default side of the driving lower edge one of the button 4 To displacement, the balance plate 61 to be driven to push the silica gel push-button in a manner of relatively described 62 deflection deformation of fixed frame 711, and after the power releasing on the button 4 is acted on, 61 elastic recovery of balance plate simultaneously drives the sliding part 5 to return Position.

In the present embodiment, the preset direction is vertical direction, it should be noted that the preset direction in the present embodiment Be based on orientation shown in the drawings or position relationship, be for only for ease of the description present invention and simplify description rather than instruction or Imply that signified device or element there must be specific orientation, with specific azimuth configuration and operation, therefore it is not intended that Limitation of the present invention.

Using conducting structure of the silica gel push-button 711 as signal generation plate 7, certain conducting stroke, backhaul bullet are provided Power and preferable pressing feel, lower noise during switching manipulation, have preferable waterproof ability；In the silica gel push-button 711 Balance element 6 is provided between the sliding part 5, sliding part 5 can be used as by the balance plate 61 on balance element 6 and silica gel is pressed Sliding part 5 for increasing the contact area with the sliding part 5, while is applied to balance by the switching driving member between key 711 Pressure on plate 61 is equably fed back on silica gel push-button 711, so that the uniform force of pressing process, avoids silica gel push-button 711 or sliding part 5 pressing during occur swing and dislocation, produce relatively stable pressing feel, due to put down Weigh plate 61 and 62 elastic connection of fixed frame, is conducive to increase the resistance that button 4 pushes, in 4 backhaul of button, the balance plate 61 are also capable of providing certain backhaul elastic force, are that a kind of high switch of Reliability comparotive is set so as to reduce there is a situation where accidentally touching Meter scheme.

As shown in Fig. 2, the signal generation plate 7 includes keypad 71 and wiring board 72, the keypad 71 and wiring board 72 are bonded to each other, and the silica gel push-button 711 is set on keypad 71, are provided with to generate control letter on the wiring board 72 Number signal generating circuit, the silica gel push-button 711 push when the signal generating circuit, the silica gel push-button 711 is connected The signal generating circuit is disconnected during reply, generates corresponding control signal.

As shown in figure 11, it is the bottom structure of the wiring board 72, is provided with to conduct control on the wiring board 72 The signal wire interface 721 of signal, the signal wire interface 721 are electrically connected with the signal generating circuit, the signal generation electricity The first control signal and second control signal of road generation are conducted to the signal wire interface 721, in the signal wire interface 721 It is middle to access signal wire conducting first control signal and second control signal to corresponding controller or executing agency.

As shown in fig. 6, the telltale hole 31 being pierced by for the signal wire interface 721 is provided on the bottom cover 3.

At work, operator first passes through the button 4 and applies pressure to the sliding part 5 this construction of switch, promotes institute It states sliding part 5 to push towards the vertical direction, since the sliding part 5 and the balance plate 61 contradict, therefore sliding part 5 again will pressure Power is transmitted on balance plate 61, and relative to the fixed frame 62 downward displacement occurs for 61 stress of balance plate, and then press Press the silica gel push-button 711 so that the conductive particle of 711 bottom of silica gel push-button and the signal generation electricity on the wiring board 72 Road contacts, and so as to which the signal generating circuit be connected, generates a control signal, control signal transduction to corresponding executing agency Afterwards, executing agency start it is corresponding perform action, after the pressure being applied on the button 4 is avoided, the silica gel push-button 711 spring back under the elastic reaction of itself, and the signal generating circuit disconnects, while the balance plate 61 drives the sliding part 5 backhauls push the button 4 to be returned to initial position, complete a control flow by the sliding part 5.

As shown in Fig. 2, Fig. 3, Fig. 5, Fig. 6 and Fig. 7, in the present embodiment, the construction of switch has further included interconnection Housing 2 and bottom cover 3, be formed with assembling cavity between the housing 2 and the bottom cover 3, the balance element 6 and signal generation plate 7 are set in the assembling cavity, boss 21 are provided on the housing 2, the both sides of the button 4 are rotatablely connected to described The outer wall of boss 21, specifically, the two side of the boss 21 is respectively arranged with shaft 212, the bottom two of the button 4 Side is respectively arranged with turn hole 41, forms rotation connection by the way that the shaft 212 is penetrated the turn hole 41, makes the button 4 It can be rotated left and right around the rotation axis on the boss 21；It is provided in the boss 21 along the default side To the pilot hole 211 of extension, the sliding part 5 is at least partially disposed in the pilot hole 211, and the button 4 is rotated far from it The bottom end of the end of axis is abutted against with the sliding part 5, and the left-right rotation of the button 4 is to drive the sliding part 5 along institute The displacement of pilot hole 211 is stated, relative to the traditionally lower key arrangement pressed, the button of left-right rotation in this construction of switch Form, which can be reduced effectively, occurs accidentally tactile possibility.

As shown in fig. 7, the button 4 is provided with concave-shaped arc surface 42 in the one side wall in its rotation axis direction, The operation that the end of the button 4 can be pulled up or be pushed by the concave-shaped arc surface 42, so drive the button 4 around The left-hand rotation or right-hand rotation of its rotation axis.

As shown in Fig. 2, Fig. 3, Fig. 9 and Figure 10, the sliding part 5 is multiple, and multiple sliding parts 5 include first and slide It is separate that part 5a and the second sliding part 5b, the first sliding part 5a and the second sliding part 5b is connected to the button 4 respectively Two ends of 4 rotation axis of button, the balance plate 61 are multiple, and multiple balance plates 61 include the first balance plate 61a and the first balance plate 61b, the first sliding part 5a are connected on the first balance plate 61a, the second sliding part 5b It is connected on the first balance plate 61b, the silica gel push-button 711 is multiple, and multiple silica gel push-buttons 711 include the first silicon Glue button 711a, the second silica gel push-button 711b, third silica gel push-button 711c and the 4th silica gel push-button 711d, first silica gel are pressed Key 711a and the second silica gel push-button 711b is connected to two ends of the first balance plate 61a respectively, and the third silica gel is pressed Key 711c and the 4th silica gel push-button 711d is connected to two ends of the first balance plate 61b respectively.

The upper pulling process of the button 4 drives the first sliding part 5a to push, and then the first balance plate 61a is applied Power pushes the first silica gel push-button 711a and the second silica gel push-button 711b, connects signal generating circuit and generates first control signal, It should be noted that the first silica gel push-button 711a and the second silica gel push-button 711b is set to be conducive to the stress that button 4 pushes simultaneously Balance, the practical first control signal that generates may be from the first silica gel push-button 711a or the second silica gel push-button 711b individually to signal The conducting of generative circuit is formed, and may also come from the first silica gel push-button 711a and the second silica gel push-button 711b and signal is generated simultaneously The conducting of circuit is formed.

The depression of the button 4 drives the second sliding part 5b to push, and then the first balance plate 61b is applied Power pushes third silica gel push-button 711c and the 4th silica gel push-button 711d, connects signal generating circuit and generates second control signal, The function of the third silica gel push-button 711c and the 4th silica gel push-button 711d and the first silica gel push-button 711a and the second silica gel Button 711b is similar.

All kinds of available circuits for being used to generate signal can be used in the signal generating circuit, and the purpose is to generate to control The control signal of corresponding executing agency, in the present embodiment, the signal generating circuit is golden finger circuit, by silica gel push-button The conductive particle conducting of 711 bottoms.

As shown in Figure 3 and Figure 4, the construction of switch has further included top shell 1, and the top shell 1 has integrally formed plane Portion 11 and cavity portion 12, can be used the injection molding of insulation, and the cavity portion 12 is socketed on the outside of the housing 2, institute It states between cavity portion 12 and the housing 2 to snap connection, storage tank 111, the storage tank 111 is provided in the planar portions 11 In offer the through-hole 112 for connecting the cavity portion 12, the boss 21 passes through the through-hole 112, and the button 4 is located at institute It states in storage tank 111, the button 4 is formed by the storage tank 111 and is protected, is touched to avoid the mistake to the button 4, institute State in storage tank 111 that there are for pulling up the button 4 and the operating space of depression.

As shown in figure 8, the sliding part 5 include nip portion 51, the first lead 52 and the second lead 53, described first 52 and second lead 53 of lead is arranged in parallel in the both ends of the nip portion 51, and first lead 52 and second is oriented to Column 53 passes through the pilot hole 211 on the boss 21 and abuts to the button 4, and first lead 52 and second is oriented to Column 53 is connected to the same end bottom end of the button 4, to balance 4 end of button to the pressure of the nip portion 51, institute It states nip portion 51 and abuts the balance plate 61.

As shown in figure 9, set flexible support rod 63 on the balance plate 61, the balance plate 61 and described solid Determine to be connected with each other by the support rod 63 between framework 62.

In the present embodiment, the balance plate 61, support rod 63 and fixed frame 62 are an integral molding structure, and described Balance plate 61, support rod 63 and fixed frame 62 are in the same plane, specifically during setting, need to ensure the support rod 63 With certain length, to make it have suitable flexibility.

As shown in Figures 2 and 3, the construction of switch has further included light guide 8, is provided with transmittance section on the button 4, institute It states and light source 722 is provided on wiring board 72, the light source 722 is located at the first silica gel push-button 711a, the second silica gel push-button Between 711b, third silica gel push-button 711c and the 4th silica gel push-button 711d, the keypad 71 is in the light source 722 towards position It is provided with transparent cover plate 712, the light source 722 is LED chip, and the light guide 8 passes through the fixed frame 62 and described convex Seat 21 is played, and the light guide 8 is between the first balance plate 61a and the first balance plate 61b, the one of the light guide 8 Towards the light source 722, the other end of the light guide 8 is extended in the button 4 at end, the light warp that the light source 722 is sent out The light guide 8 is conducted in the button 4 and by the transmittance section light extraction of the button 4, plays button mark and dark place uses Effect.

The fixed frame 62 is snapped connection with the wiring board 72, and the keypad 71 is fixed on the fixed frame 62 Between the wiring board 72, the distance between the balance element 6 and the keypad 71 are equal to the height of the silica gel push-button 711 Degree, so that the top of the silica gel push-button 711 is contacted on the balance plate 61.

Another embodiment of the utility model discloses a kind of automotive back accelerator control system, including controller, performs machine Structure and construction of switch as described above.

The controller is used to receive the control signal of the construction of switch generation, and is held according to the control signal to described Row mechanism is controlled.

The executing agency is used to control the opening and closing of automotive back door.

When carrying out upper pulling process to the button 4, the signal generating circuit generates first control signal, by described the One control signal transduction controls the executing agency to carry out automotive back door automatic to the controller after via controller processing Opening operation automatically turns on automotive back door to extreme position.

During the automotive back door automatically turns on, upper pulling process is carried out to the button 4 again, again toward institute Controller transmitting first control signal is stated, then controller controls the executing agency to stop the automatic opening operation of automotive back door Only, automotive back door is positioned at current opening angle.

When carrying out depression to the button 4, the signal generating circuit generates second control signal, by described the Two control signal transductions control the executing agency to carry out automotive back door automatic to the controller after via controller processing Automotive back door is automatically closed to extreme position shutoff operation.

During the automotive back door is automatically closed, depression is carried out to the button 4 again, again toward institute Controller transmitting second control signal is stated, then controller controls the executing agency to stop the operation that is automatically closed of automotive back door Only, automotive back door is positioned at and is presently off angle.

The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this All any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model Protection domain within.

Claims (10)

1. a kind of construction of switch, which is characterized in that plate (7) is generated including button (4), sliding part (5), balance element (6) and signal, The balance element (6) includes fixed frame (62) and balance plate (61), and the fixed frame (62) is fixed on the signal generation On plate (7), it is connected to balance plate (61) deflection inside of the fixed frame (62), the one of the sliding part (5) End is abutted with the button (4), and the other end of the sliding part (5) is abutted with the balance plate (61), the signal life The silica gel push-button (711) of balance plate described in face (61) is provided on into plate (7), the sliding part (5) can be in the button (4) The one preset direction displacement of driving lower edge, to drive the balance plate (61) with relatively described fixed frame (62) deflection deformation After mode pushes the silica gel push-button (711), and the power on the button (4) is acted on releases, the balance plate (61) Elastic recovery simultaneously drives the sliding part (5) return.

2. construction of switch according to claim 1, which is characterized in that the signal generation plate (7) includes keypad (71) With wiring board (72), the keypad (71) and wiring board (72) are bonded to each other, and the silica gel push-button (711) is set to keypad (71) on, the signal generating circuit for generating control signal, the silica gel push-button (711) are provided on the wiring board (72) The signal generating circuit is connected when pushing, the silica gel push-button (711) disconnects the signal generating circuit when replying.

3. construction of switch according to claim 2, which is characterized in that be provided with signal wire interface on the wiring board (72) (721), the signal wire interface (721) is electrically connected with the signal generating circuit.

4. construction of switch according to claim 1, which is characterized in that the construction of switch further includes the shell of interconnection Body (2) and bottom cover (3) are formed with assembling cavity, the balance element (6) and signal between the housing (2) and the bottom cover (3) Generation plate (7) is set in the assembling cavity, and boss (21), the both sides of the button (4) are provided on the housing (2) It is rotatablely connected to the outer wall of the boss (21), is provided with the guiding extended along the preset direction in the boss (21) Hole (211), the sliding part (5) are at least partially disposed in the pilot hole (211), and the button (4) is far from its rotation axis The end in direction is abutted against with the sliding part (5), and the left-right rotation of the button (4) is to drive the sliding part (5) along institute State the displacement of pilot hole (211).

5. construction of switch according to claim 2, which is characterized in that the sliding part (5) is multiple, multiple slips Part (5) includes the first sliding part (5a) and the second sliding part (5b), first sliding part (5a) and second sliding part (5b) is connected to two ends of the button (4) far from the button (4) rotation axis respectively, and the balance plate (61) is more A, multiple balance plates (61) include the first balance plate (61a) and the first balance plate (61b), first sliding part (5a) It is connected on first balance plate (61a), second sliding part (5b) is connected on first balance plate (61b), institute It is multiple to state silica gel push-button (711), and multiple silica gel push-buttons (711) are pressed including the first silica gel push-button (711a), the second silica gel Key (711b), third silica gel push-button (711c) and the 4th silica gel push-button (711d), first silica gel push-button (711a) and second Silica gel push-button (711b) is connected to two ends of first balance plate (61a), the third silica gel push-button (711c) respectively It is connected to two ends of first balance plate (61b) respectively with the 4th silica gel push-button (711d).

6. construction of switch according to claim 4, which is characterized in that the construction of switch has further included top shell (1), described Top shell (1) has integrally formed planar portions (11) and cavity portion (12), and the cavity portion (12) is socketed on the housing (2) Outside is provided with storage tank (111) on the planar portions (11), through-hole (112) is offered in the storage tank (111), described convex Seat (21) is played across the through-hole (112), the button (4) is in the storage tank (111).

7. construction of switch according to claim 4, which is characterized in that the sliding part (5) includes nip portion (51), first Lead (52) and the second lead (53), first lead (52) and the second lead (53) are arranged in parallel in the pressure The both ends in conjunction portion (51), first lead (52) and the second lead (53) are across the pilot hole on the boss (21) (211) it and abuts to the button (4), the nip portion (51) abuts the balance plate (61).

8. construction of switch according to claim 1, which is characterized in that flexible branch is set on the balance plate (61) Rib (63) is supportted, is connected with each other between the balance plate (61) and the fixed frame (62) by the support rod (63).

9. construction of switch according to claim 2, which is characterized in that the construction of switch has further included light guide (8), institute It states and transmittance section is provided on button (4), light source (722), one end court of the light guide (8) are provided on the wiring board (72) To the light source (722), the other end of the light guide (8) is extended in the button (4), what the light source (722) sent out Light is through in the light guide (8) conduction to the button (4) and by the transmittance section light extraction of the button (4).

10. a kind of automotive back accelerator control system, including the construction of switch as described in any one in claim 1~9.