Push-button switch
Technical field
The present invention relates to a kind of push-button switch.
Background technology
The general structure of existing push-button switch is for being 200720151217.8 the described structure of Chinese invention patent like the patent No.; Comprise installing rack and be positioned at the connected switch case of installing rack below; Be with the button spindle and the ratchet that cooperatively interact in the installing rack; The lower end of button spindle is provided with and cogs, and it is adaptive with described ratchet to cog, and is with button spring in the ratchet; Be provided with left static contact and right static contact in the switch case, also be provided with the elasticity shell fragment that extends to left static contact top on the right static contact; The lower end of button spring is against on the elasticity shell fragment.Pressing button bar during use, ratchet is descending thereupon until the ratchet redirect, rotates after the angle engagement again that cogs with button spindle.Through button spring the elasticity shell fragment is pressed down, make the elasticity shell fragment contact, realize energising with left static contact.Pressing button bar once more, redirect once more, button spring resets, and elasticity shell fragment and left static contact break away from, and recover reset condition.Although push-button switch is comparatively simple, an end is a static contact, and the other end is a movable contact spring, after the use of the permanent time of elasticity shell fragment of connection, and the instability that switch performances is become, and the push-button switch of said structure can only be communicated with a circuit.
Summary of the invention
Technical problem to be solved by this invention is: provide a kind of and can be communicated with two circuit and the stable push-button switch that conducts electricity simultaneously.
For solving the problems of the technologies described above; The technical scheme that the present invention adopts is: a kind of push-button switch comprises telescoping mechanism and is arranged on the pedestal of telescoping mechanism below that telescoping mechanism comprises end cap again, is slidingly arranged in the button spindle in the end cap and is slidingly arranged in the rotating shaft in the button spindle; Clamping between the bottom surface of end cap and the upper surface of pedestal; The inwall of end cap is provided with locator slide, and the lower end outer surface of button spindle is provided with some projections that can in locator slide, slide, and the lower end outer surface of rotating shaft is provided with the ratchet that matches with projection; Under this ratchet and projection or the locator slide behind the termination place; Can be under the effect of projection or locator slide angle of rotation, ratchet slided in locator slide or offset with the lower end of locator slide, the centre of said pedestal is provided with sliding tray; Slide in the sliding tray and be provided with T font travelling carriage; Two horizontal ends of travelling carriage are stretched out from sliding tray respectively, and the pedestal that is positioned at two horizontal ends belows of travelling carriage is respectively arranged with pair of terminal, is respectively arranged with between terminal and the travelling carriage horizontal ends and can this be against the auxiliary spring on the travelling carriage horizontal ends to the movable contact spring of terminal conducting and with movable contact spring; Be provided with main spring in the rotating shaft, the other end and the travelling carriage of main spring offset.
Offer groove on the cell wall of said sliding tray, the hasp that matches and can in groove, slide up and down with groove is set on the lower end outer wall of travelling carriage;
The end face of said travelling carriage is provided with groove, and an end of main spring is positioned at this groove.
The invention has the beneficial effects as follows: the push-button switch of said structure, can connect two circuit simultaneously, and simple to operate, conduction is stable.
Description of drawings
Fig. 1 is the structural representation of push-button switch of the present invention;
Fig. 2 is the explosive view of Fig. 1;
Fig. 3 is the cutaway view of end cap in the push-button switch of the present invention;
Fig. 4 is the structural representation of pedestal in the push-button switch of the present invention.
Among the figure: 1, pedestal, 2, end cap, 3, button spindle, 4, rotating shaft, 5, locator slide, 6, projection, 7, ratchet; 8, sliding tray, 9, travelling carriage, 10, the travelling carriage left end, 11, the travelling carriage right-hand member, 12, the first terminal, 13, second terminal, the 14, the 3rd terminal; 15, the 4th terminal, 16, left movable contact spring, 17, right movable contact spring, 18, left auxiliary spring, 19, right auxiliary spring, 20, left sealing cap; 21, right aling cap, 22, groove, 23, hasp, 24, main spring, 25, guide pad, 26, groove.
Embodiment
Below in conjunction with accompanying drawing, describe specific embodiments of the present invention in detail.
Like Fig. 1, shown in Figure 2, push-button switch of the present invention comprises telescoping mechanism and is arranged on the pedestal 1 of telescoping mechanism below.This telescoping mechanism is a prior art, and is identical with the structure of automatic ball pen afterbody.Be that telescoping mechanism comprises end cap 2, is slidingly arranged in the button spindle 3 in the end cap 2 and is slidingly arranged in the rotating shaft 4 in the button spindle 3; Clamping between the upper surface of the bottom surface of end cap 2 and pedestal 1; The inwall of end cap 2 is provided with locator slide 5; As shown in Figure 3, locator slide 5 is formed by the guide pad 25 of the bottom band gradient of two narrow length.The lower end outer surface of button spindle 3 is provided with and can in locator slide 5, slides and some projections 6 that the top is triangular in shape; The lower end outer surface of rotating shaft 4 is provided with the ratchet 7 that matches with projection 6; Behind this ratchet 7 and projection 6 or 5 times termination places of locator slide; Can be after angle of rotation under the effect of projection 6 or locator slide 5; Ratchet 7 is upwards slided in locator slide 5 or offset with the lower end of guide pad 6, the centre of said pedestal 1 is provided with sliding tray 8, and sliding in the sliding tray 8 is provided with T font travelling carriage 9.Be provided with main spring 24 in the rotating shaft 4, an end of main spring 24 stretches out rotating shaft 4 and offsets with the end face of travelling carriage 9.Two horizontal ends of travelling carriage 9---travelling carriage left end 10 and travelling carriage right-hand member 11; From sliding tray 8, stretch out respectively; Be provided with pair of terminal in the pedestal 1 of travelling carriage left end 10 belows---the first terminal 12 and second terminal 13, the pedestal 1 of travelling carriage right-hand member 11 belows is provided with pair of terminal---the 3rd terminal 14 and the 4th terminal 15.The first terminal 12 and second terminal, 13 tops are provided with that can left movable contact spring 16, the three terminals 14 of the first terminal 12 and 13 conductings of second terminal and the 4th terminal 15 tops be provided with can be with the right movable contact spring 17 of the 3rd terminal 14 and 15 conductings of the 4th terminal.Also be provided with in the pedestal 1 left movable contact spring 16 is against the left auxiliary spring 18 on the travelling carriage left end 10 and right movable contact spring 17 is against the right auxiliary spring 19 on the travelling carriage right-hand member 11.When actual production, pedestal 1 is arranged to open, and the part that will be positioned on the pedestal 1 through left sealing cap 20 and right aling cap 21 encapsulates.When guaranteeing that travelling carriage 9 moves up and down; Guarantee that its linearity and push-button switch travelling carriage 9 when dismounting can not ejected by left auxiliary spring 18 and right auxiliary spring 19; As shown in Figure 4; The internal groove side wall of sliding tray 8 is provided with the groove 22 on narrow length and the vertical direction, and the lower end outer wall of travelling carriage 9 is provided with and can travelling carriage 9 be fastened on the hasp 23 in the groove 22.Influence the push-button switch performance in order to prevent that main spring 24 from skidding on travelling carriage 9, the end face of travelling carriage 9 is provided with groove 26, and an end of main spring 24 is positioned at this groove 26.
The course of work of the present invention is: downward pressing button bar 3; The lower end of button spindle 3 is with after the ratchet 7 of rotating shaft 4 bottoms contacts; Driving rotating shaft 4 moves down together; Rotating shaft 4 is again through being arranged on main spring 24 in the rotating shaft 4 with travelling carriage 9 axially pressing down along sliding tray 8; Along with moving down of travelling carriage 9, travelling carriage left end 10 makes left movable contact spring 16 overcome the elastic force of left auxiliary spring 18 and presses to the first terminal 12, second terminal 13 and contacts, and promptly the first terminal 12 and second terminal 13 are through left movable contact spring 16 conductings; Travelling carriage right-hand member 11 makes right movable contact spring 17 overcome the elastic force of right auxiliary spring 19 and presses to and the 3rd terminal 14, the 4th termination contact 15, and promptly the 3rd terminal 14 and the 4th terminal 15 are through right movable contact spring 17 conductings.When the ratchet 7 of rotating shaft 4 bottoms slides to the lowest order of locator slide 5 and at this low level anchor point that falls into locator slide 5, the back main spring 24 of loosing one's grip makes rotating shaft 4 be positioned this.Subsequently travelling carriage 9 be in all the time under the effect of main spring 24 be against left movable contact spring 16 on the first terminal 12 and second terminal 13, right movable contact spring 17 is against a state on the 3rd terminal 14 and the 4th terminal 15, promptly push-button switch is in conducting state.Once more during pressing button bar 3; Rotating shaft 4 is left anchor point and on the effect lower edge of main spring 24 locator slide 5, is moved along inclined-plane, guide pad 25 lower end after turning over certain angle under the effect of button spindle 3 lower end projections 6, i.e. rotating shaft 4 is replied high-order under the effect of main spring 24.At this moment; Travelling carriage 9 is under the pressure that loses main spring 24; Left side auxiliary spring 18 is given travelling carriage left end 10 and 11 1 active forces that make progress of travelling carriage right-hand member through left movable contact spring 16 and right movable contact spring 17 respectively with right auxiliary spring 19; Be that travelling carriage 9 resets, left movable contact spring 16 leaves the first terminal 12 and second terminal 13, breaks off between the first terminal 12 and second terminal 13; Right movable contact spring 17 leaves between the 3rd terminal 14 and the 4th terminal 15, the three terminals 14 and the 4th terminal 15 and breaks off, thereby realizes the disconnection of push-button switch.
Advantage of the present invention is: only needs realize synchronous conducting and disconnection with regard to push-button switch capable of using to two circuit by twice button spindle, and simple and fast, and contact well between movable contact spring and the terminal, improved the electric conductivity of push-button switch.Certainly, this push-button switch also can be used for a circuit is realized the situation of conducting and disconnection.