CN203179758U - Microswitch - Google Patents

Abstract

The utility model relates to the field of a switch, and specifically relates to a microswitch. The microswitch comprises a housing, an actuating mechanism and a button partly arranged in the housing. The actuating mechanism comprises a first terminal, a second terminal and an elastic sheet mechanism. One side of the first terminal is provided with a first fixed contact; the elastic sheet mechanism is provided with a moving contact opposite to the position of the first fixed contact; the housing comprises an upper cover and a lower cover; a terminal groove and a rocking bar groove are arranged in one side edge of the upper cover; the lower cover is connected with the upper cover; the first terminal and the second terminal are respectively provided with a terminal aperture; the first fixed contact and the moving contact are respectively provided with a brass and gold-plated composite layer with a thickness of 20 micrometers; the second terminal is provided with a brass and gold-plated composite layer with a thickness from 20 to 40 micrometers; the contact surface of the first fixed contact has a cone shape; and the terminal apertures are elliptic. The microswitch is advantageous in that costs are low, service life is long, and identification is easy.

Description

A kind of sensitive switch

Technical field

The utility model relates to field of switches, relates in particular to a kind of sensitive switch.

Background technology

Sensitive switch is the very little sensitive electronic component of a kind of volume, and it is of many uses, and model is various, the sensitive switch of every kind of model can by or the electric current difference of bearing, it uses frequent, when electric current is big silver layer on the five metals parts is caused fusion, and its reliability life-span is lower; Various being difficult to of model recognized; Its housing is injection molded, and technology is complicated, and material cost is also high.

The utility model content

The problem that the utility model solves is the defective that existing sensitive switch cost height, model are difficult to recognize, the reliability life-span is lower, and a kind of sensitive switch is provided, and the cost of material is low for it, the life-span long, easily identification.

The utility model embodiment provides a kind of sensitive switch, comprise housing, actuating mechanism, and part places the button in the described housing, described actuating mechanism comprises the first terminal, second terminal and shell fragment mechanism, described the first terminal one side is provided with first fixed contact, described shell fragment mechanism is provided with the moving contact relative with the described first fixed contact position, described housing comprises upper cover body and lower cover, in described upper cover body one side terminal groove and rocking bar groove are set, described lower cover covers with described upper cover body and is connected; Be provided with terminal hole on described the first terminal, second terminal; Having 20 on described first fixed contact and the moving contact---40 thick brass and gold-plated composite beds have brass and gold-plated composite bed on described second terminal; The contact-making surface of described first fixed contact is taper, and described terminal hole is oval.

Preferably, described brass and gold-plated composite bed thickness are 20.

Sensitive switch described in the utility model, beneficial effect is:

Upper cover body and the lower cover internal structure of housing are simplified, reduced moulding process, and then reduced material cost, the shell structure of producing is simple, easy-to-use; The silver layer of each contact is selected suitable thickness, in use can increase the reliability life-span of switch integral body.

Description of drawings

Accompanying drawing 1 is the internal structure schematic diagram of the utility model embodiment 1 sensitive switch;

Accompanying drawing 2 is the internal structure schematic diagram of the utility model embodiment 3 sensitive switches;

Accompanying drawing 3 is the external structure schematic diagram of the utility model embodiment 1 sensitive switch;

Accompanying drawing 4 is the external structure schematic diagram of the utility model embodiment 1 sensitive switch;

Accompanying drawing 5 is the internal structure schematic diagram of the utility model embodiment 2 sensitive switches;

Accompanying drawing 6 is the external structure schematic diagram of the utility model embodiment 2 sensitive switches;

Accompanying drawing 7 is the upper cover body structural representation of the utility model embodiment sensitive switch;

Accompanying drawing 8 is the lower cover structural representation of the utility model embodiment sensitive switch;

Wherein:

1, housing 2, actuating mechanism 3, button

4, the 3rd terminal 5, the first terminal 6, second terminal

7, shell fragment mechanism 8, second fixed contact 9, first fixed contact

10, moving contact 11, upper cover body 12, lower cover

13, brass and gold-plated composite bed 14, rocking bar 15, terminal groove

16, rocking bar groove 17, groove 18, terminal hole.

Embodiment

For making the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing the utility model is described in further detail.

Embodiment 1:

Sensitive switch described in the utility model, shown in accompanying drawing 3,4, it comprises that housing 1, housing 1 comprise upper cover body 11 and lower cover 12.

Shown in accompanying drawing 7,8, in described upper cover body 11 1 sides terminal groove 15 and rocking bar groove 16 are set, a side relative with described rocking bar groove 16 place sides is provided with two grooves 17 spaced apart from each other, and described lower cover 12 covers with described upper cover body 11 and is connected.

As shown in Figure 1, it also comprises actuating mechanism 2, touch structure 2 comprises the 3rd terminal 4, the first terminal 5, second terminal 6 and shell fragment mechanism 7, the 3rd terminal 4, the first terminal 5, second terminal 6 all part is arranged in the housing 1, the 3rd terminal 4 one sides are provided with second fixed contact 8, the first terminal 5 one sides are provided with first fixed contact 9, second fixed contact 8 is relative with first fixed contact, 9 positions, shell fragment mechanism 7 is provided with moving contact 10, moving contact 10 is arranged between second fixed contact 8 and first fixed contact 9, its can with second fixed contact 8, first fixed contact 9 contacts respectively.Be provided with circular or oval-shaped terminal hole 18 on the 3rd terminal 4, the first terminal 5 and second terminal 6.

On second fixed contact 8, first fixed contact 9 and the moving contact 10 brass and gold-plated composite bed 13 are arranged, its thickness is has 20 thick brass and gold-plated composite beds on 20, the second terminals 6.

Also comprise a button 3, button 3 parts place in the housing 1, and can the push shrapnel end of mechanism 7, its end makes that the moving contact 10 in the shell fragment mechanism 7 can contact with second fixed contact 8 and first fixed contact 9 respectively.Button 3 tops arrange a rocking bar 14 movable up and down, and rocking bar 14 1 ends are arranged in the housing 1, press rocking bar 14, can press push button 3.

Button 3 can be used the different colours mark, represents different models, is easy to identification.

Embodiment 2:

As different from Example 1, shown in accompanying drawing 5,6, it comprises actuating mechanism 2, touch structure 2 includes only the first terminal 5, second terminal 6 and shell fragment mechanism 7, the first terminal 5, second terminal 6 all part are arranged in the housing 1, the first terminal 5 one sides are provided with first fixed contact 9, and shell fragment mechanism 7 is provided with moving contact 10, and it can contact and connect power supply with first fixed contact 9.Be provided with circular or oval-shaped terminal hole 18 on the first terminal 5, second terminal 6.

Brass and gold-plated composite bed 13 are arranged on first fixed contact 9 and the moving contact 10, and its thickness is has 20 thick silver layers on 20, the second terminals 6.The contact-making surface of first fixed contact 9 is taper, and terminal hole 18 is oval.

Embodiment 3:

As different from Example 2, as shown in Figure 2, touch structure 2 includes only the 3rd terminal 4, second terminal 6 and shell fragment mechanism 7.

The above is preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also are considered as protection range of the present utility model.

Claims (2)

1. sensitive switch, comprise housing (1), actuating mechanism (2), and partly place the interior button (3) of described housing (1), described actuating mechanism (2) comprises the first terminal (5), second terminal (6) and shell fragment mechanism (7), it is characterized in that:

Described the first terminal (5) one sides are provided with first fixed contact (9), described shell fragment mechanism (7) is provided with the moving contact (10) relative with described first fixed contact (9) position, described housing (1) comprises upper cover body (11) and lower cover (12), in described upper cover body (11) one sides terminal groove (15) and rocking bar groove (16) are set, described lower cover (12) covers with described upper cover body (11) and is connected; Be provided with terminal hole (18) on described the first terminal (4), second terminal (5);

Having 20 on described first fixed contact (9) and the moving contact (10)---40 thick brass and gold-plated composite beds (13) have brass and gold-plated composite bed (13) on described second terminal (6); The contact-making surface of described first fixed contact (9) is taper, and described terminal hole (18) is oval.

2. according to the described sensitive switch of claim 1, it is characterized in that:

Described brass and gold-plated composite bed thickness are 20.

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