CN2450773Y

CN2450773Y - Button type start switch

Info

Publication number: CN2450773Y
Application number: CN 00259234
Authority: CN
Inventors: 李文平
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-11-17
Filing date: 2000-11-17
Publication date: 2001-09-26
Anticipated expiration: 2010-11-17

Abstract

The utility model relates to a button type start switch which is used for controlling the on-off of three-phase or single-phase electric appliances. The utility model comprises a switch base and a switch panel, wherein, a start button and a stop button are arranged on the switch panel, a static contact is arranged in the switch base, a wired joint is arranged on the outer side of the switch base, and a moving contact frame is arranged in the switch base. A large compressed spring is arranged on between the moving contact frame and the switch base, a moving contact piece is arranged on the moving contact frame, a steel wire bar is inlaid in the inner side of the switch panel, and a reset spring is arranged between the stop button and the switch base. The utility model can and control and complete the change-over of on-off states by the steel wire bar and the reset spring, so that the reliability of the actions is high, and the service life and the safety performance of the switch can be extended.

Description

The push button starting switch

The utility model relates to a kind of switch, particularly a kind of push button starting switch.

Existing push button starting switch mainly is made up of parts such as switch base, switch panel, starting button, stop button, fixed contact and action contact frames.Wherein switch base and switch panel constitute the housing of switch together, and starting button and stop button are positioned on the switch panel.Push starting button and stop button and can control moving up and down of action contact frame, make switch conduction or close.At present, in starting switch, all slide plate is set between button and the action contact frame or seesaw is finished switch state.But this structure of starting switch is complicated, breaks down easily in actual use; Simultaneously, it is as a kind of electric device, and its security performance also needs to improve.

The purpose of this utility model is at the problems referred to above, and a kind of simple in structure, good reliability, convenient and practical push button starting switch are provided.

The purpose of this utility model realizes by following technical proposal: this push button starting switch comprises switch base and switch panel, switch base and switch panel constitute the housing of starting switch, starting button and stop button are arranged on the switch panel, be provided with two to three pairs of fixed contacts in the switch base, all there is the wire terminal of conducting with it in the outside of switch base corresponding to each fixed contact, be provided with action contact frame in the switch base, be provided with big stage clip between action contact frame and the switch base, place identical logarithm on the action contact frame and be positioned at movable contact spring above the fixed contact, also be provided with small pressure spring between each movable contact spring and the action contact frame with fixed contact.In this push button starting switch, the switch panel inboard is embedded with a steel wire bar, between stop button and the switch base back-moving spring is set.Here, the steel wire bar is to play the role of positioning, and when pressing starting button, starting button can drive action contact frame and move down, and makes switch keep conducting state, and makes its location by the steel wire bar.And push stop button, and then can remove the positioning action of steel wire bar, starting button and action contact frame can rise under the effect of back-moving spring and big stage clip and reset, and switch is in off-state.

Below in conjunction with embodiment and accompanying drawing thereof structure of the present utility model is elaborated.

Fig. 1 is a longitudinal profile structural representation of the present utility model.

Fig. 2 is the schematic diagram of steel wire bar in the utility model.

Fig. 3 is the horizontal section schematic diagram of starting button in the utility model.

Fig. 4 is the horizontal section schematic diagram of stop button in the utility model.

Among the figure, 1, switch base; 2, panel; 3, steel wire bar; 3 a, hook head; 3b, hook-type afterbody; 4, back-moving spring; 5, stop button; 5a, wedge shape inclined-plane; 6, starting button; 6a, positioning recess; 7, action contact frame; 8, small pressure spring; 9, movable contact spring; 10, fixed contact; 11, big stage clip; 12, wire terminal.

As shown in Figure 1, in the present embodiment, in the starting switch housing that switch base 1 and panel 2 are constituted three pairs of fixed contacts 10 are set, corresponding three movable contact springs 9 are arranged on the action contact frame 7 in the switch base 1.Six wire terminals 12 are arranged on the lateral surface of switch base 1, correspond respectively to each fixed contact 10, and with pairing fixed contact 10 conductings.Big stage clip 11 is arranged between action contact frame 7 and the switch base 1, be used for resetting of action contact frame 7.Small pressure spring 8 on the action contact frame 7 has three, corresponds respectively to each movable contact spring 9.When switch was in conducting state, movable contact spring 9 was pushed down fixed contact 10 by small pressure spring 8, made the contact point contact reliable and stable.

As shown in Figure 1, starting button 6 and stop button 5 cards arranged side by side are inserted on the switch panel 2.Steel wire bar 3 is embedded in the inboard of switch panel 2.As shown in Figure 2, the shape of steel wire bar 3 is hook-type, and its hook head 3a is embedded in switch panel 2 inboards, and hook-type afterbody 3b is positioned at the inboard of starting button 6 and stop button 5.

As shown in Figure 3, the inboard of starting button 6 is provided with positioning recess 6a.The effect of positioning recess 6a is the hook-type afterbody 3b that it can block steel wire bar 3 after pressing starting button 6, makes steel wire bar 3 location, thereby guarantees that starting switch is in conducting state.

As shown in Figure 4, the inboard of stop button 5 is provided with wedge shape inclined-plane 5a.Be in conducting state at switch, when starting button 6 blocks steel wire bar 3, press stop button 5, utilize the wedge shape inclined-plane 5a of stop button 5 inboards that steel wire bar 3 is withdrawed from from the positioning recess 6a of starting button 6.Like this, starting button 6 can reset under the effect of back-moving spring 4.Simultaneously, action contact frame 7 can rise under the effect of big stage clip 11, makes starting switch be in off-state.

Obviously, compare the push button that the utility model provides with existing firing switch Firing switch is rational in infrastructure, part is less. Owing to utilize steel wire bar and back-moving spring to control And finish the conversion of on off state, the reliability height of its action can improve making of switch greatly With life-span and security performance. The utility model can be widely used in controlling three-phase or single-phase electricity consumption The break-make of device.

Claims

1, a kind of push button starting switch, comprise switch base (1) and switch panel (2), switch base (1) and switch panel (2) constitute the housing of starting switch, starting button (6) and stop button (5) are arranged on the switch panel (2), be provided with two to three pairs of fixed contacts in the switch base (1)) (10), all there is the wire terminal (12) of conducting with it in the outside of switch base (1) corresponding to each fixed contact (10), be provided with action contact frame (7) in the switch base (1), be provided with big stage clip (11) between action contact frame (7) and the switch base (1), action contact frame (7) go up to be placed with the identical logarithm of fixed contact (10) and is positioned at movable contact spring (9) above the fixed contact (10), also be provided with small pressure spring (8) between each movable contact spring (9) and the action contact frame (7), it is characterized in that described switch panel (2) inboard is embedded with a steel wire bar (3), is provided with back-moving spring (4) between stop button (5) and the switch base (1).

2, push button starting switch according to claim 1, it is characterized in that being provided with in the described switch base (1) three pairs of fixed contacts (10), corresponding three movable contact springs (9) are arranged on the action contact frame (7), six wire terminals (12) are arranged on the lateral surface of switch base (1).

3, push button starting switch according to claim 1 and 2, the shape that it is characterized in that described steel wire bar (3) is hook-type, its hook head (3a) is embedded in switch panel (2) inboard, and hook-type afterbody (3b) is positioned at the inboard of starting button (6) and stop button (5).

4, push button starting switch according to claim 3 is characterized in that the inboard of described starting button (6) is provided with positioning recess (6a).

5, push button starting switch according to claim 3 is characterized in that the inboard of described stop button (5) is provided with wedge shape inclined-plane (5a).