CN200947390Y

CN200947390Y - Micro-active switch

Info

Publication number: CN200947390Y
Application number: CN 200620063573
Authority: CN
Inventors: 吴捷成; 沈军; 何时英
Original assignee: HUIDA ELECTROMECHANICAL (HUIZHOU) CO Ltd
Current assignee: Chuangle Electronics Industry (Huizhou) Co., Ltd.
Priority date: 2006-08-26
Filing date: 2006-08-26
Publication date: 2007-09-12
Anticipated expiration: 2016-08-26

Abstract

The utility model relates to the technical field of switching, in particular to a micro switch which consisting of a base and an upper cover, the base is provided with a common terminal, a normal open and a normal closed terminal, wherein the top of outrigger in the base passes through a moving contact and contacts with the bottom of master unit, the top of master unit extends the base out, the end of moving contact is positioned between the normal open and the normal closed terminal, the moving contact realizes switching between the normal open and the normal closed terminal by leading of the master unit and the outrigger. A curve part is positioned on the bottom of lengthen box-shaped moving contact with a tilted flexible tongue, two protrusions are positioned on both sides of a Z-shaped outrigger which support the moving contact, the bottom design of inverted T-shaped master unit is an inclined plane. The micro switch of the utility model positioned on the bottom to increase the curve part can effective alleviate the damage by the high impact, the two protrusions on the top of outrigger can prevent the switch failing for the moving contact drop off from the notch of the outrigger in the effects of high-impact, and the bottom design of master unit is inclined plane which makes the manipulation of the switch more stable.

Description

A kind of sensitive switch

Technical field

The utility model relates to the switching technique field, is specifically related to be applied to high accuracy, and the high stability occasion is as the sensitive switch on the baroceptor.

Background technology

Sensitive switch switch kind on the market is a lot, but the function of switch is all similar substantially.The common sensitive switch that is applied on the baroceptor, the loam cake that includes base and match with base, public terminal, Chang Kaiduan and normally closed terminal are set in the base installing hole, also be provided with pole, movable contact spring in the base installing hole and by sincere, the pole top is passed movable contact spring and is touched by sincere bottom connection, extend outside the base by sincere top, the movable contact spring end is arranged between Chang Kaiduan and the normally closed terminal, the afterbody of movable contact spring is arranged at by sincere below, movable contact spring by realize by sincere drive with Chang Kaiduan, normally closed terminal between the switching that connects.

This class switch of the prior art is positioned at by the movable contact spring afterbody under sincere and is straight sheet, and when switch was subjected to HI high impact, movable contact spring and tongue piece thereof may compressive deformations, influenced the operational stability of switch.Traditional in addition all is circular-arc by sincere with contact-making surface pole, and this design causes the fluctuation of switching manipulation power and differential force big by occurring easily in the sincere operating process by the excessive phenomenon of sincere swing.

The utility model content

Technical problem to be solved in the utility model provides a kind of stable operation, switch switches sensitive switch accurately.

The utility model is achieved through the following technical solutions:

Design a kind of sensitive switch, the loam cake that includes base and match with base, be provided with public terminal in the base installing hole, Chang Kaiduan and normally closed terminal, the top of the pole of installing in the base is passed movable contact spring afterbody through hole and is touched by sincere bottom connection, extend outside the base by sincere top, the movable contact spring end is arranged between Chang Kaiduan and the normally closed terminal, the pole groove at movable contact spring afterbody through hole and pole top matches to merge and is arranged at by sincere below, movable contact spring is by realizing and Chang Kaiduan by sincere and pole drive, the switching that connects between the normally closed terminal, the elastic tongue piece shaped as frame movable contact spring afterbody with perk of lengthening is provided with curved portions.

The both sides, Z-shaped pole top of the support movable contact spring that movable contact spring is provided with down are provided with two juts, and inverted T-shaped is designed to tapered plane by sincere bottom surface.

The utility model compared with prior art has following remarkable advantage:

Sensitive switch of the present utility model increases curved portions at the movable contact spring afterbody, can effectively slow down the damage of HI high impact to movable contact spring, the two ends, pole top of supporting movable contact spring add two juts, can prevent that switch movable contact spring under the HI high impact effect from coming off from the pole notch causes switch failure, and inverted T-shaped is designed to tapered plane by sincere bottom surface that switch is controlled is more stable simultaneously.

Description of drawings

Fig. 1 is a perspective view of the present utility model;

Fig. 2 is the explosive view of Fig. 1; Fig. 3 is the movable contact spring schematic diagram among Fig. 2;

Fig. 4 is the schematic diagram of pole among Fig. 2; Fig. 5 is the schematic diagram that cooperates with pole by sincere.

Embodiment

The utility model is described in further detail by embodiment below in conjunction with accompanying drawing.

Shown in Fig. 1-2, a kind of sensitive switch, the loam cake 2 that includes base 1 and match with base is provided with public terminal 3, Chang Kaiduan 4 and normally closed terminal 5 in the base installing hole, also be provided with pole 6, movable contact spring 7 in the base and by sincere 8, be individually fixed in the base in the corresponding groove position.Movable contact spring by realize by sincere drive with Chang Kaiduan, normally closed terminal between the switching that connects.

Referring to Fig. 3, movable contact spring is a shaped as frame, inwardly be connected with the elastic tongue piece 71 of perk from the movable contact spring end, movable contact spring end 72 is arranged between Chang Kaiduan and the normally closed terminal, the afterbody through hole 732 of movable contact spring matches to merge with the pole groove 62 at pole top and is arranged at by sincere below, the movable contact spring afterbody of lengthening is provided with curved portions 731, switch is under the HI high impact effect, this arc sections plays and shifts and slow down impulsive force to the movable contact spring tongue piece, prevent the distortion of movable contact spring tongue piece, improved the operating physical force that causes because of impact and the variation of differential force.

The top of the pole 6 of installing in the base is passed movable contact spring 7 afterbody through holes 732 and is touched by sincere 8 bottom connections, both sides, pole top are provided with two juts 61, and as shown in Figure 4, this can prevent effectively that switch is under the HI high impact effect, movable contact spring comes off from the pole notch, causes switch failure.

Inverted T-shaped extends outside the base by sincere top, and inverted T-shaped forms the line face by sincere 8 bottoms that are the inclined-plane with pole 6 ends and contacts, and referring to Fig. 5, this design can prevent that by sincere swing position is excessive in operating process, effectively improves the handling of switch.

Claims

1, a kind of sensitive switch, the loam cake (2) that includes base (1) and match with base, be provided with public terminal (3) in the base installing hole, Chang Kaiduan (4) and normally closed terminal (5), the top of the pole (6) of installing in the base is passed movable contact spring (7) afterbody through hole (732) and is touched by sincere (8) bottom connection, extend outside the base by sincere top, the movable contact spring end is arranged between Chang Kaiduan and the normally closed terminal, the afterbody through hole (732) of movable contact spring matches to merge with the pole groove (62) at pole top and is arranged at by sincere below, movable contact spring is by realizing and Chang Kaiduan by sincere and pole drive, the switching that connects between the normally closed terminal is characterized in that: described shaped as frame movable contact spring afterbody with elastic tongue piece of perk is provided with curved portions (731).

2, sensitive switch according to claim 1 is characterized in that: the both sides, Z-shaped pole top of described support movable contact spring are provided with two juts (61).

3, sensitive switch according to claim 2 is characterized in that: described inverted T-shaped is a tapered plane by sincere bottom surface.