CN2620921Y - Leaf spring contact switch device - Google Patents

Abstract

The utility model discloses a reed contact switch device, and is mainly composed of a reed and a tablet forming structure; the reed is arranged with an electrical contact; the reed is a U shape, the end region of the reed is fixed, two arms are respectively arranged with electrical contacts; wherein the electrical contact on one arm end constantly contacts the contact at the upper part; while the electrical contact on the other arm end constantly breaks off the contact at the lower part; the middle of one arm of the reed extends inwards and is connected with a press point which matches the tablet forming structure; the utility model has the advantages of simple and compact structure, convenient using, reliability, high assembling precision, simple processing, and low manufacturing cost.

Description

Reed contact-making switch device

Technical field

The utility model relates to the reed contact-making switch device on a kind of pressure switch or the similar products, belong to Mechanical Contact formula switching device.

Background technology

In the prior art, the reed contact-making switch structure of pressure switch as shown in Figure 1, it is made up of the compressing tablet mechanism on reed 11,12 and top up and down, is correspondingly provided with electric contact 13 on the reed.Described compressing tablet mechanism is made of transmission ring 14 and middle drive link 15.Transmission ring 14 contacts with upper reed plate 11, and during the low pressure action, transmission ring 14 promotes upper reed plate 11 downwards and makes the contact of power-on and power-off contact, circuit turn-on; Drive link 15 contacts with following reed 12, and during the high pressure action, reed 12 separated two contacts that contacted under drive link promoted downwards, and circuit disconnects.In addition, tri-state switch in press and adopt independently actuating mechanism.The reed contact-making switch of said structure has adopted at least two movable contact springs basically and has driven work by compressing tablet mechanism respectively, thereby structure is comparatively complicated, carries out the action underaction, and poor reliability, manufacturing cost are also high.

Summary of the invention

It is a kind of simple in structure that the purpose of this utility model is to provide, low cost of manufacture, the high reed contact-making switch device of assembling installation accuracy.It mainly is made up of reed and compressing tablet mechanism, and reed is provided with electric contact, and described reed is the U-shaped shape, and the one end is fixed, and respectively is provided with electric contact on two arms.

Two arm ends on the described reed are provided with electric contact, and wherein the electric contact above the arm end often contacts with upper contacts, and electric contact and lower contact normal off below another arm end are opened.

The centre of the wherein arm on the described reed is received the press points that matches with compressing tablet mechanism to the inside.

The utility model compared with prior art, have simple in structure, compact, easy to use, reliable, the assembly precision height, product processing is simple, characteristics such as low cost of manufacture.

Description of drawings

Fig. 1 is the prior art constructions schematic diagram.

Fig. 2 is a reed structure schematic diagram of the present utility model.

Fig. 3 is a structural representation of the present utility model.

Embodiment

Below in conjunction with accompanying drawing the utility model is described in detail: Fig. 2, shown in Figure 3, the utility model mainly are made up of reed 21 and compressing tablet mechanism.Reed 21 shape that takes the shape of the letter U forms two parallel arms 22,23 and an end 24.Described end 24 is fixing, and two arms are respectively A arm 22 and B arm 23, and riveted joint has electric contact 25 and often contacts with upper contacts 26 above the A arm 22; And the following riveted joint of B arm 23 has electric contact 27 and open with contact 28 normal offs of bottom.Above above-mentioned reed 21, be provided with the compressing tablet mechanism that forms by transmission ring 29 and middle drive link 30.When low pressure, transmission ring 29 moves down this B arm 23 to pressing down B arm 23, and the electric contact 27 on it contacts with lower contact 28, and circuit is connected; During high pressure, middle drive link 30 is pushed down the press points of receiving to the inside 20 in the middle of the A arm 22 downwards, and A arm 22 is moved down, and the some contact 25 on it is separated with upper contacts 26, and circuit disconnects.The utility model has been realized the control of low pressure, high pressure two states making it assembly precision height be arranged by a slice reed, and product is easy to processing etc.

Claims (3)

1, a kind of reed contact-making switch device, it mainly is made up of reed and compressing tablet mechanism, and reed is provided with electric contact, it is characterized in that described reed (21) is the U-shaped shape, one end (24) is fixing, respectively is provided with electric contact (25,27) on two arms (22,23).

2, reed contact-making switch device according to claim 1, it is characterized in that two arms (22, the 23) end on the described reed (21) is provided with electric contact (25,27), wherein the electric contact (25) above the arm end often contacts with upper contacts (26), and the electric contact (27) below another arm end is opened with lower contact (28) normal off.

3, reed contact-making switch device according to claim 1 and 2 is characterized in that the centre of the wherein arm (22) on the described reed (21) is received the press points (20) that matches with compressing tablet mechanism to the inside.

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