CN202473681U

CN202473681U - Microminiature microswitch

Info

Publication number: CN202473681U
Application number: CN2011205673014U
Authority: CN
Inventors: 饶波安; 陈红
Original assignee: 余正明
Priority date: 2011-12-30
Filing date: 2011-12-30
Publication date: 2012-10-03
Anticipated expiration: 2021-12-30

Abstract

The utility model relates to a microminiature microswitch, comprising a housing and a base which are fastened with each other, wherein inside the housing there is provided a switch assembly, the switch assembly comprises a press member, a moving sheet and three switch terminals arranged on the base side by side, the moving sheet is provided with a clamping hole and a clamping spring piece, one end of the clamping spring piece is connected with the moving sheet, the other end is provided with a free end, above first switch terminal there are provided first and second clamping portions, the first clamping portion passes upward through the clamping hole and is clamped with the edge of the clamping hole, the second clamping portion is clamped with the free end of the clamping spring piece of the moving sheet to drive the spring piece to bend to form an upward elastic force, the press member is arranged above the moving sheet, the upper portion of the press member is exposed out of the housing for operation, the end socket of the moving sheet is contacted with second switch terminal, the press member is pressed, and the press member presses the moving sheet downward to contact with third switch terminal to realize switch operation. The microswitch has the advantages of being concise in structure, reliable in performance, long in mechanical life, simple in processing technic, and easy in automatic batch production.

Description

A kind of microminiature sensitive switch

Technical field

The utility model relates to a kind of sensitive switch, specifically is meant a kind of microminiature sensitive switch.

Background technology

Existing small-sized sensitive switch generally adopts the extension spring structure; The switch that adopts the extension spring structure is on processing technology; Shortcoming is following: (1) is because the special property that extension spring A tangles easily each other; Be difficult to realize mould assembling or automation assembling, can only total man worker's assembling when COM terminal (D) is hung in general extension spring with shell fragment (F), the low and product quality of efficient can not get guaranteeing; (2) three terminals (D, J K) process the strip mode and supply, the bad packing of the method part, and because terminal material is thinner, terminal easy deformation when circulation and injection moulding; And three terminals and base (C) will adopt the encapsulate Shooting Technique to form needle stand, and production efficiency is low and need special messenger's feed; NC terminal (K) needs the riveted joint contact with NO terminal (J), because the switch space is little, riveted joint is difficulty relatively; In addition, extension spring is not high mechanical endurance, generally has only twenty or thirty ten thousand times.

Summary of the invention

The technical problem that the utility model will solve provides a kind of microminiature sensitive switch of easy to process, long service life.

For solving the problems of the technologies described above, the utility model adopts following technical scheme:

A kind of microminiature sensitive switch comprises the shell and the base of mutual fastening, establishes switch module in said shell and the base, and said switch module comprises by sincere, moving plate and is located at first switch terminal on the base, second switch terminal and the 3rd switch terminal side by side; Said moving plate has blocked hole and the clamping shell fragment that is set up in parallel, and clamping shell fragment one end is connected in moving plate, and the other end is a free end; First switch terminal top is provided with first Access Division and second Access Division, and first Access Division is upward through the blocked hole of moving plate and is connected in the blocked hole edge, and second Access Division is connected in the free end of the clamping shell fragment of moving plate, impels shell fragment to be bent to form elastic force upwards; By the sincere moving plate top of being located at, top is exposed to shell and supplies operation; Said moving plate termination and second switch termination contact are pushed by sincere, by contact the 3rd switch terminal realization switching manipulation downwards of sincere compressing moving plate.

Preferably, be equipped with the contact on said second switch terminal, the 3rd switch terminal and the contacted termination of moving plate.

The utlity model has following remarkable result: said microswitch structure is succinct, dependable performance, and processing technology is simple, can realize automatic batch production; And mechanical endurance is higher, can reach 5,000,000 times, and load life (3A 125VAC) also can reach 10,000 times.

Description of drawings

Accompanying drawing 1 is a microminiature sensitive switch blast structure chart in the prior art;

Accompanying drawing 2 is the said microminiature sensitive switch of the utility model cutaway views;

Accompanying drawing 3 is the said microminiature sensitive switch blast of the utility model structural representations.

Embodiment

Below will combine accompanying drawing and embodiment that the utility model is explained in further detail for the ease of it will be appreciated by those skilled in the art that.

Like Fig. 2, shown in 3, the microminiature sensitive switch that present embodiment disclosed comprises: shell 1 and base 2, and the two snaps together each other, and switch module is located in shell 1 and the base 2.Said switch module comprises by sincere 3, moving plate 7, first switch terminal 4, second switch terminal 5 and the 3rd switch terminal 6; Three switch terminals are located on the base lower end protuberate basic unit side by side; On second switch terminal, the 3rd switch terminal and the contacted termination of moving plate, be equipped with the contact.

Have the blocked hole 72 and the clamping shell fragment 74 that are set up in parallel on the moving plate 7, clamping shell fragment one end is connected in moving plate, and the other end is a free end; First switch terminal, 4 tops are provided with first Access Division 42 and second Access Division 44; First Access Division is upward through the blocked hole of moving plate 7 and is connected in the blocked hole edge; Second Access Division is connected in the free end of the clamping shell fragment of moving plate, impels shell fragment to be bent to form elastic force upwards; Be located at moving plate top by sincere 3, top is exposed to shell and supplies operation.When switch was failure to actuate, the moving plate termination contacted with second switch terminal 5; When pushing, realize switching manipulations by sincere compressing moving plate contact downwards the 3rd switch terminal 6 by sincere 3.

The processing technology of the said sensitive switch of the utility model simply is embodied in following aspect: three terminals just are divided into three independently parts when punching press, instant packed circulation, and the hardware stamping mould is also uncomplicated simultaneously, thereby can guarantee the quality of product parts; Base 2 can be injection molded into the plastic cement piece separately, does not contain the encapsulate operation, the fast and saving manpower of injection moulding efficient; After terminal was divided into single part, contact riveted joint was just simply very convenient and realize automation riveting easily; Three terminals are assembled into the mode that needle stand is an employing plug-in unit purl after accomplishing relevant manufacturing procedure, and terminal is fixed on the base.

The foregoing description is the preferred version that the utility model is realized, and indefiniteness is exhaustive, and the utility model can also have other variations under same idea.Need to prove that under the prerequisite that does not break away from the design of the utility model utility model, any conspicuous replacement is all within the utility model protection range.

Claims

1. microminiature sensitive switch; The shell (1) and the base (2) that comprise mutual fastening; Establish switch module in said shell (1) and the base (2); It is characterized in that: said switch module comprises by sincere (3), moving plate (7) and is located at first switch terminal (4) on the base, second switch terminal (5) and the 3rd switch terminal (6) side by side;

Said moving plate (7) has blocked hole (72) and the clamping shell fragment (74) that is set up in parallel, and clamping shell fragment one end is connected in moving plate, and the other end is a free end; First switch terminal (4) top is provided with first Access Division (42) and second Access Division (44); First Access Division is upward through the blocked hole of moving plate (7) and is connected in the blocked hole edge; Second Access Division is connected in the free end of the clamping shell fragment of moving plate, impels shell fragment to be bent to form elastic force upwards; Be located at the moving plate top by sincere (3), top is exposed to shell and supplies operation;

Said moving plate termination contacts with second switch terminal (5), pushes by sincere (3), by sincere compressing moving plate contact the 3rd switch terminal (6) realization downwards switching manipulation.

2. microminiature sensitive switch according to claim 1 is characterized in that: be equipped with the contact on said second switch terminal, the 3rd switch terminal and the contacted termination of moving plate.