CN2261075Y

CN2261075Y - Push-button switch

Info

Publication number: CN2261075Y
Application number: CN 96235510
Authority: CN
Inventors: 周武; 薛保民
Original assignee: XIAN MACHINE-TOOL ELECTRIC-APPLIANCE FACTORY
Current assignee: XIAN MACHINE-TOOL ELECTRIC-APPLIANCE FACTORY
Priority date: 1996-01-11
Filing date: 1996-01-11
Publication date: 1997-08-27
Anticipated expiration: 2006-01-11

Abstract

The utility model belongs to an electric switch, and two static contacting heads and a conductive plate correspondingly connected with the static contacting heads are arranged on the inner wall of an insulating shell body. Two movable contacting heads are respectively arranged on a herringbone movable bridge, and one end of the movable bridge is connected to a positioning piece. The other end of the movable bridge is supported on a contacting head seat, and the positioning piece is arranged on a pushing rod. One end of the pushing rod is inserted on a pressing spring in the shell body, and the other end of the pushing rod extends out of the shell body. When the electric switch is used, the outer force of an operator pushing the pushing rod only plays the fallout function, and the elastic force functions of the movable bridge and a pulling spring cause the movable contacting heads to quickly contact the static contacting heads reliably. Therefore, the using safety is as high as 10 <-6 >, and the service life is 800 thousand times.

Description

Push-button switch

The utility model belongs to a kind of electric switch.

In known technology, no matter common push-button switch is open in usual or normally closed type, all be that the external force that relies on operating personnel fully is used for realizing contact or the disengagement of moving contact to fixed contact, cannot guarantee all complete standard of the each action of operating personnel, certain randomness is arranged, so dependability is poor when pressing button.The contact of contact or disengagement time are long, and sluggishness is arranged, and produce bigger arcing electric current, influence the useful life of switch itself and electric equipment.

The purpose of this utility model provides a kind of novel push-button switch, when using this push-button switch, operating personnel's external force only plays a fall out effect, the elastic force of push-button switch inside can make moving contact contact rapidly with fixed contact, to overcome the action disadvantage of bringing lack of standardization, guarantee the dependability of push-button switch owing to operating personnel.

Embodiment of the present utility model is: two fixed contacts 4 are reached the inwall that is installed in insulation shell 2 with its corresponding conductive plate 3 that is connected, two moving contacts 5 are installed in respectively on two moving bridges 6, one end of moving bridge 6 is connected on the spacer 9, the other end of moving bridge 6 is supported on the contact base 7, two moving bridges 6 constitute herringbone, middle with extension spring 8 tractions, spacer 9 is installed on the push rod 1, one end of push rod 1 is inserted on the stage clip 10, stage clip 10 is installed in the insulation shell 2, and the other end of push rod 1 stretches out outside insulation shell 2.When push rod is moved by the effect of operating personnel's external force during use, the drive spacer moves, and the lambdoid two moving bridges of formation are evened up gradually, outline surpasses level-out distance, upset just takes place and becomes down herringbone in two moving bridges under the effect of extension spring, two moving contacts are rapid reliably to be contacted with two fixed contacts or disconnect and make.When removing operating personnel's external force, under the elastic force effect of stage clip, same principle makes two moving bridges recover positive herringbone, and makes two moving contacts hightail or contact fixed contact.

The utility model has the advantages that: use this push-button switch that very high dependability is arranged, reliability index can surpass 10 ^-6, this push-button switch is swift in motion, and greatly reduces the arcing phenomenon, has prolonged the useful life of electric equipment and this switch, can reach the useful life of this push-button switch 8,000,000 times.Owing to during the moving bridge upset of herringbone clear and melodious sound is arranged, make operating personnel can be clearly oneself operation whether make mistakes, that guarantees to use is safe and reliable.

Accompanying drawing 1 is the normal opening structure principle schematic of the utility model embodiment.

Accompanying drawing 2 is the normally closed structural principle schematic diagram of the utility model embodiment.

The drawing label declaration is as follows:

The 1-push rod, the 2-insulation shell, the 3-conductive plate, the 4-fixed contact, the 5-moving contact, 6-moves bridge, 7-contact base, 8-extension spring, 9-spacer, 10-stage clip.

Embodiment:

Accompanying drawing is the utility model example structure principle schematic, it is that two fixed contacts 4 are reached the inwall that is installed in insulation shell 2 with its corresponding conductive plate 3 that is connected, two moving contacts 5 are installed in respectively on two moving bridges 6, one end of moving bridge 6 is connected on the spacer 9, the other end of moving bridge 6 is supported on the contact base 7, two moving bridges 6 constitute herringbone, middle with extension spring 8 tractions, spacer 9 is installed on the push rod 1, one end of push rod 1 is inserted on the stage clip 10, stage clip 10 is installed in the insulation shell 2, and the other end of push rod 1 stretches out outside insulation shell 2.

Claims

1, a kind of push-button switch, it is characterized in that: its two fixed contacts (4) and the conductive plate (3) that is connected with its correspondence are installed in the inwall of insulation shell (2), two moving contacts (5) are installed in respectively on two moving bridges (6), one end of moving bridge (6) is connected on the spacer (9), the other end of moving bridge (6) is supported on the contact base (7), two moving bridges (6) constitute herringbone, middle with extension spring (8) traction, spacer (9) is installed on the push rod (1), one end of push rod (1) is inserted on the stage clip (10), stage clip (10) is installed in the insulation shell (2), and the other end of push rod (1) stretches out outside insulation shell (2).