CN1719563A

CN1719563A - Translation switch key device

Info

Publication number: CN1719563A
Application number: CN 200510036206
Authority: CN
Inventors: 高激扬; 吴德培; 罗绍伟
Original assignee: Shenzhen Hangsheng Electronic Co Ltd
Current assignee: Shenzhen Hangsheng Electronic Co Ltd
Priority date: 2005-07-26
Filing date: 2005-07-26
Publication date: 2006-01-11
Anticipated expiration: 2025-07-26
Also published as: CN100498999C

Abstract

This invention discloses a translation switch key device including a key cap mounted in the key slot of a control panel, a press contactor set at the position corresponding to the switch contact on a CB, a rotation column with rotation arms at the same side of both ends, the two rotation arms are pivoted in the slideway at the back of the key cap, the middle part of the column taken as the rotating shaft is placed at the side of the key cap. It also includes a press plate fixedly opposite to the control panel to force the rotating shaft to press the back of the control panel. When pressing one end of the key cap, the two linked rotating arms on the column can rotate along the fixedly pressed rotating shaft, the entire cap can move down smoothly and the press contactor triggers the switch contact more flexibly.

Description

Translation switch key device

Technical field

The present invention relates to a kind of actuating type switch key, relate in particular to a kind of actuating type switch key device that in the control panel of electronics or electric equipment, uses.

Background technology

The actuating type switch key is widely used in the control panel of various electronics in the body of a motor car or electric equipment owing to it has advantage such as easy to operate, simple and easy, on the panel such as electronic equipments such as automobile audios, to make things convenient for the driver in the process of moving, still can arbitrarily control electronics or electric equipment in the car.

The actuating type switch key that is used in this field generally adopts the button cap with big operating surface territory as far as possible when design, so that the manipulator is when central authorities that can not accurately touch button cap or position, center, during such as edge that touches, is pressed into button cap or edge, still can control the action of actuating type switch effectively, for this reason, the common back side at button cap, design also is mounted to switch contact a plurality of and that connect, each switch contact lays respectively at the zones of different at the button cap back side, as the two ends of button cap.Yet, adopt the switch key of this structure, as manipulator during at edge that touches, is pressed into button cap or edge, button cap is discontinuity everywhere, when moving down at the place of being pressed, then may upwarp away from the place of being pressed, therefore may not be as designing requirement, can be all the time trigger switch effectively; In addition, because of arranging and different manipulators' use habit of each button on the control panel, often make the probability difference that is triggered of the different switch contacts under the same button cap, after long-term the use, this also causes the useful life of different switch contacts or the difference of trigger sensitivity easily, cause malfunctioning switch, that is to say the reliability that reduces switch; Also have, above-mentioned design must make that the structure of switch integral body is more complicated, and production cost improves, and packaging efficiency descends.

Summary of the invention

For overcoming the defective of above-mentioned prior art, when technical problem to be solved by this invention is intended to provide the button cap that a kind of use has big operating surface territory, still can be comparatively sensitive, the translation switch key device of trigger switch effectively.

For solving the problems of the technologies described above, the present invention proposes a kind of translation switch key device, comprise be installed on control panel by the button cap in the keyway, at the back side of described button cap, be provided with and push contact with the corresponding position of switch contact on the circuit board, comprise that also the homonymy at two ends all has the rotary column of pivoted arm, two pivoted arms of described rotary column are articulated in respectively in two pivoted arm guide rails at the back side of described button cap, and the mid portion of described rotary column then is placed on the sidepiece of described button cap as rotating shaft; Also comprise one with respect to described control panel fixing, in order to described rotating shaft is suppressed the pressing plate at the back side of described control panel.

After adopting said structure, when pressing down button cap, especially when an end of button cap is pushed, by the pivoted arm of two interlocks on the rotary column and the stressed conversion that is pressed the rotating shaft of fixing, the other end of button cap or the integral body of button cap will move with the direction that very smooth-going, uniform mode is continued to use power, and an end can not occur and move down the time, the phenomenon that the other end upwarps, like this, pushing the triggering of contact and corresponding switch contact will be more sensitive, light and handy, reliable.

Below will be by a class specific embodiment and the present invention is described in detail in conjunction with the accompanying drawings.

Description of drawings

Fig. 1 is to use the local appearance structural representation of the control panel of translation switch key device of the present invention;

Fig. 2 is an assembly structure schematic diagram of observing translation switch key device of the present invention from the back side;

Fig. 3 is the decomposition texture schematic diagram from the translation switch key device described in top view the present invention;

Fig. 4 is a decomposition texture schematic diagram of observing the translation switch key device described in the present invention from the back side

Fig. 5 is the structural representation of a kind of embodiment of the rotary column in the translation switch key device of the present invention;

The structural representation of another embodiment of the rotary column in Fig. 6 translation switch key device of the present invention.

Embodiment

With reference to each accompanying drawing, in a kind of embodiment of translation switch key device of the present invention, comprise be installed on control panel 1 by the button cap in the keyway 2, the back side at button cap 2, be provided with switch contact 41 corresponding positions on the circuit board 4 and push contact 21, so that trigger switch contact 41 exactly when pushing contact 21 and moving down with button cap, generally speaking, under the same button cap, this pushes contact 21 and corresponding switch contact 41 can be provided with more than one group, respectively be provided with one group such as the button cap two ends in the diagram, certainly, also can only be provided with one group in the centre.

Translation switch key device of the present invention comprises that also the homonymy at two ends all has the rotary column 3 of pivoted arm 31, two pivoted arms 31 of this rotary column 3 intert respectively or are articulated in two pivoted arm guide rails 22 that are oppositely arranged at the back side of button cap 2, the mid portion of rotary column 3 is as rotating shaft 32, this rotating shaft 32 is placed on the sidepiece of described button cap 2 after two pivoted arms 31 articulate;

For the rotating shaft 32 that makes rotary column 3 mid portions does not produce translation along the downforce direction when rotated, only rotate when the button cap pressurized to guarantee rotating shaft 32 along direction shown in central axis shown in dotted lines in Figure 4 and the arrow, also increased a pressing plate 5 among the present invention especially, this pressing plate 5 is after installation with respect to described control panel 1 fixed-site, its function, rotating shaft 32 can be compressed on the back side of control panel 1; Concrete fixed-site mode can be after having installed rotary column 3 and pressing plate 5 successively, and is directly that pressing plate 5 is bonding or be fastened on the back side of control panel 1.As can be seen from Figure 3, because the back side that circuit board 4 just abuts against at control panel 1 itself, therefore, in the practice, general if the Thickness Design of pressing plate 5 itself are become and the back side of circuit board 4 and control panel 1 between the gap cardinal principle consistent, can the purpose of said fixing rotating shaft 3 be fixed and be realized to pressing plate 5 at when assembling nature, promptly the two sides of pressing plate 5 can be fixed with the back side of control panel 1 against living circuit board 4 respectively.Therefore pressing plate 5 structures own can be very simple: rectangular that thickness is suitable gets final product; Because pressing plate 5 is generally plastic parts, the plastic deformed phenomenon that the easy in the mill reasons such as shrink that occur cause, for avoiding this phenomenon, platen design can be become Fig. 3, shape shown in Figure 4, that is: pressing plate 5 simultaneously is provided with two or more protruding 51 against this of circuit board, rely on described each projection 51 that pressing plate 5 is able to against living described circuit board 4, and and then be resisted against between the back side of circuit board 4 and control panel 1, can be constant at pressing plate 5 against this one side structure at control panel 1 back side, as long as the corresponding to substantially condition in gap that projection 51 thickness together with pressing plate itself satisfy between the back side of circuit board 4 and control panel 1 promptly still can realize above-mentioned compacting rotating shaft 32, prevent the purpose of translation when rotating shaft 32 is rotated, also reduced the volume of pressing plate simultaneously, made pressing plate 5 seem more light and handy.

Usually, always be provided with a plurality of operation push-buttons on the control panel 1, the pairing difference in functionality of each operation push-button is generally decided by the affiliated different circuit of key switch, to finish different operating functions, correspondingly, also just have a plurality of button caps 2, as all showing three button caps arranged side by side 2 among Fig. 1 to Fig. 4, but in any case, the action of each button cap and switch key device itself, structure still can basically identical, like this, when on control panel 1, being set side by side with a plurality of button caps 2, each button cap 2 back side can be one-body molded mutually in order to the pressing plate of suppressing above-mentioned each rotating shaft 32, forms Fig. 2, Fig. 3, shape shown in Figure 4, its advantage are to have reduced number of components and parts of the present invention, simplify the structure, installing, more easy during dismounting, and the be fixed strong degree of (promptly being resisted against between circuit board 4 and the guidance panel 1) and the reliability of suppressing each rotating shaft 32 of pressing plate 5 itself also strengthened.

For the flexibility that guarantees that rotary column 3 rotates along rotating shaft 32 central axis, can further dose an amount of lubricating oil (not shown) at the periphery of rotating shaft 32, purpose is after rotating shaft 32 is by pressing plate 5 compacting, still can be smooth and easy, freely rotate in the crack between the pressing plate 5 and control panel 1 back side and do not seem too unsmooth.

Rotary column 3 is the shape shown in Fig. 2, Fig. 3, Fig. 4 incessantly, also can be as Fig. 5, shown in Figure 6 or similar other shapes, as long as can make two pivoted arms 31 on the rotary column 3 after stressed, can be along the central axis (shown in the circular dashed line direction of arrow among Fig. 5, Fig. 6) of rotating shaft 32, and rotate in the same way along pivoted arm guide rail 22, the two ends movement locus of the button cap 2 that articulates is reached unanimity to get final product, therefore, generally require two pivoted arms 31 to be positioned at rotary column 3, also promptly be positioned at the homonymy of rotating shaft 32.When making an end of pressing keys cap, the other end of button cap has better interlock translation effect, and pivoted arm 31 is preferably parallel with rotating shaft 32 cardinal principles with the pivot joint position of pivoted arm guide rail 22, shown in the parallel dotted lines among Fig. 5, Fig. 6.This point is when structural design, and its principle is understood that, need not to give unnecessary details in detail.

The course of work of switch key device of the present invention is as follows: when pressing down button cap 2, especially when an end of button cap is pushed, the central axis of the rotating shaft 32 that a pivoted arm 31 on the rotary column 3 will fixed along being fastened by pressing plate 5, i.e. axis shown in Fig. 4 dotted line (being similar to the fulcrum of lever), rotate along direction shown in Fig. 4 arrow along pivoted arm guide rail 22, meanwhile, the other end that another pivoted arm 31 also drives button cap is made the motion or the stroke of same track, like this, the integral body of button cap 2 will be with comparatively smooth-going, mode is along the direction translational of downforce uniformly, when the translation stroke is enough big, push the switch contact 41 of contact 21 on will circuits for triggering plate 4, make switch closure or disconnection; When unclamping button cap, button cap then resets by the resilience force of switch contact 41 self, operates light and handy, nimble, reliable.

Because it is parallel that the present invention has solved button cap preferably, evenly press down or go up the technical problem of bullet, thereby, use is in the actuating type switch key with big operating surface territory the time, the sensitivity of trigger switch, reliability all is improved, like this, only be provided with one group and push contact 21 and corresponding switch contact 41 gets final product at the middle part at described button cap 2 back sides, a plurality of contacts 21 of pushing specifically can no longer be set under same button cap exactly, and push contact 21 as long as be provided with one in the middle part at the button cap back side, similarly, corresponding switch contact 41 also can only be provided with one accordingly on the circuit board 4, as shown in Figure 3, in simplified structure, both can reduce the cost of manufacture of switch key, improve efficiency of assembling, can also improve sensitivity, reliability, concrete operation is also more convenient.

Claims

1. translation switch key device, comprise the button cap (2) in the keyway pressed that is installed on control panel (1), at the back side of described button cap, be provided with and push contact (21) with the corresponding position of switch contact (41) on the circuit board (4), it is characterized in that: comprise that also the homonymy at two ends all has the rotary column of pivoted arm (31) (3), two pivoted arms of described rotary column are articulated in respectively in two pivoted arm guide rails (22) at the back side of described button cap, and the mid portion of described rotary column then is placed on the sidepiece of described button cap as rotating shaft (32); Also comprise one with respect to described control panel fixing, in order to described rotating shaft is suppressed the pressing plate (5) at the back side of described control panel.

2. a kind of translation switch key device as claimed in claim 1 is characterized in that: the two sides of described pressing plate (5) is fixed with the back side of control panel against living described circuit board (4) respectively.

3. a kind of translation switch key device as claimed in claim 2, it is characterized in that: described pressing plate (5) is being faced on the plate face of described circuit board (4), be provided with two or more projectioies (51), rely on described each projection (51) that pressing plate (5) is able to against living described circuit board (4).

4. as claim 2 or 3 described a kind of translation switch key devices, it is characterized in that: be set side by side with a plurality of button cap (2) on the described control panel (1), described each button cap (2) back side is one-body molded mutually in order to the pressing plate of suppressing described rotating shaft (32).

5. as claim 1,2 or 3 described a kind of translation switch key devices, it is characterized in that: only be provided with one group and push contact (21) and corresponding switch contact (41) at the middle part at described button cap (2) back side.

6. a kind of translation switch key device as claimed in claim 5 is characterized in that: the periphery of described rotating shaft (32) has also been dosed lubricating oil.