CN2881920Y

CN2881920Y - Switch of normally off at natural state

Info

Publication number: CN2881920Y
Application number: CN 200520067705
Authority: CN
Inventors: 吴福喜
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-11-15
Filing date: 2005-11-15
Publication date: 2007-03-21
Anticipated expiration: 2015-11-15

Abstract

A switch of normally off at natural state relates to a switch, in particular to a micro switch comprising a base (1), a cover (3) matched with the base, a terminal-contacting element (6) arranged on the base, a conducting element (5) arranged in the cavity of the base, an operation element (2) and an elastic element (4). The conducting element (5) is arranged on the operation element (2), at least one operation element (2) is provided in the cavity of the base. Meanwhile, at least two linking terminal (6) are given on the base, and the contacting face (61) of the terminal is arranged in the cavity of the base. Otherwise, at least one elastic element (4) is arranged between the base (1) and the operation element (2), a handle (21) of the operation element passes through an opening hole (34). With the function of the elastic element (4) and by the obstructing of the cover, the operation element (2) makes the contacts (51) of the conducting element (5) conducted on the two corresponding terminal contacting elements of the corresponding contacting face of the contacting element. The utility model is of simple structure, stable electrical performance, and suitable for large-scale production, so the production efficiency is high.

Description

Normally closed switch under a kind of nature

Technical field

The utility model relates to switch, particularly microswitch.

Background technology

Be accompanied by miniaturization, the multifunction of electric equipment, the development trend of the more stable typeization of performance, its requirement to electronic switch also grows with each passing day, not only require miniaturization, the multifunction of electronic switch, more require simplification, the stable performanceization of electronic switch.For adapting to the demand of electric equipment development, though existing electronic switch has been realized miniaturization, multifunction, its structure is complicated, makes troubles to production in enormous quantities, has lowered production efficiency, has improved cost.Moreover, existing development because of the electronic switch miniaturization, its inner components is also more and more littler, requires also more and more higher.Because irresistible external factor such as mould, plating, transportation exists, to so little, require so that high parts quality also is difficult to guarantee, so cause the switch performance produced extremely instability and mechanical electric apparatus performance these problems not up to standard or the like had a strong impact on the quality of electric equipment products, this also is one of problem of each switch manufacturer of puzzlement.

Summary of the invention

The purpose of this utility model is to provide normally closed switch under a kind of simple in structure, nature that electric property is stable.

The purpose of this utility model can realize like this, design switch normally closed under a kind of nature, comprise pedestal, the lid that cooperates with pedestal, be arranged on termination contact body on the pedestal, be arranged at conducting contact, operating body and elastomer in the pedestal cavity, described conducting contact is arranged on the operating body, an operating body is set in the pedestal cavity at least, two splicing ears are set on the pedestal at least, the contact-making surface of terminal is arranged in the pedestal cavity, an elastomer is set between pedestal and operating body at least, and the shank of operating body passes the perforate of lid correspondence; Operating body is made on the termination contact contact level of conducting contact contact in correspondence by the obstruct of lid under the elastomeric effect, corresponding two-terminal contact conducting.

The utility model is simple in structure, and electric property is stable, is suitable for producing the production efficiency height in enormous quantities.

Description of drawings

Fig. 1 is the structural profile schematic diagram under one of the utility model preferred embodiment normality.

Fig. 2 is the decomposing schematic representation of one of the utility model preferred embodiment.

Fig. 3 is the profile schematic diagram of one of the utility model preferred embodiment.

Generalized section when Fig. 4 is one of the utility model preferred embodiment contact disconnection.

Embodiment

The utility model will be further described below in conjunction with embodiment.

As shown in Figure 1 and Figure 2, normally closed switch under a kind of nature, the lid 3 that comprise pedestal 1, cooperates, be arranged on termination contact body 6 on the pedestal, be arranged at conducting contact 5, operating body 2 and elastomer 4 in the pedestal cavity with pedestal, described conducting contact 5 is arranged on the operating body 2, an operating body 2 is set in the pedestal cavity at least, two splicing ears 6 are set on the pedestal at least, the contact-making surface 61 of terminal is arranged in the pedestal cavity, an elastomer 4 is set between pedestal 1 and operating body 2 at least, and the shank 21 of operating body passes the perforate 34 of lid correspondence; Operating body 2 is made on the termination contact contact level 61 of conducting contact contact 51 in correspondence by the obstruct of lid 3 under the effect of elastomer 4, corresponding two-terminal contact 6 conductings.

The shape variableization of pedestal, its inner chamber cross section can be square, circular, oval, triangle, polygon or the like, the shape of cross section of operating body 2 matches with the inner chamber cross section.

As Fig. 1, shown in Figure 4, contact-making surface of described termination contact body 61 and 13 same planes, pedestal cavity inner wall surface, corresponding conducting contact contact 51 also with 13 same planes, pedestal cavity inner wall surface.Conducting contact 5 on the operating body 2 can be placed on operating body on any face of pedestal cavity part, termination contact body 6 corresponding matching setting with it.Conducting contact 5 on the operating body 2 can be two or more, does not influence electric property with it and is as the criterion, and termination contact body 6 also is provided with two pairs or more corresponding matching with it.The fixed form of conducting contact 5 on operating body 2 also has multiple, and present embodiment adopts injection moulding to fix, and also available riveting is fixed, securing member is fixed or the like.

As shown in Figure 1 and Figure 2, the cavity bottom of described pedestal is provided with correcting post 12.Correcting post 12 is used for stabilized elastomer 4.Elastomer 4 adopts spring in the present embodiment.Elastomer 4 can be one, also can as average layout three or four springs on operating body 2, operating body 2 steadily be moved for a plurality of.

As Fig. 2, shown in Figure 3, cover body 32,33 before and after both sides, described lid 3 front and back extend to form along the pedestal outer wall is provided with a projection 17 respectively at least on the front and back outer wall of pedestal, and cover body 32,33 corresponding positions are provided with the window 35 that matches.As shown in Figure 2, described lid 3 is made of metal, and the foot of cover body 32,33 stretches out and forms leg 37.The lid 3 of present embodiment is formed by the metallic plate pressing and bending, and it roughly is long hood-like formation, blocks and gives and fastening entire product of 2 spacing while of operating body.It comprises preceding cover body 32, upper plate portion 31, rear cover body 33 and leg portion 37.Fastening product, bonding are welded with circuit board in four leg positions 37.

As shown in Figure 2, four jiaos of rectangle projections 15 that four symmetrical distributions are set of described pedestal inner chamber, four angle correspondences of lid upper plate portion 31 are opened in the positioning port 36 that locating piece 14 cooperates.The rectangle projection 15 that four symmetrical distributions are set four jiaos of pedestal base part seat body grooves closely cooperates with operating body 2, has guide pillar, guide pin bushing effect, with after reaching 21 of operating body shanks and being subjected to different directions power, and the purpose that the electricapparatus performance is still stable.

As shown in Figure 2, four jiaos of described pedestal 1 opening surface are provided with locating piece 14.In the present embodiment, four jiaos of places of this pedestal upper surface are symmetrically distributed four and are used to locate the centre bore 34 of lid and the consistent locating piece 14 in central elastic body correcting post 12 centers of pedestal.

Two and two are set with upper plenum in the described pedestal 1, corresponding setting operation body 2, elastomer 4 and conducting contact 5, termination contact body 6 in each cavity.In the pedestal a plurality of switches are set.

The opening of described pedestal inner chamber is on one of them face of upper surface, leading flank, trailing flank, left surface and the right flank of pedestal, and the position, hole 34 of lid is corresponding with the pedestal lumen openings.According to the selection of opening, operating body 2 is horizontal positioned or vertical the placement accordingly, enlarges the scope of application.

The pedestal of the utility model embodiment is made of the main part that roughly is cuboid, this main part for surface opening thereon, bottom and around link to each other and be container-like object, be used for device elastomer 4, operating body 2, conducting contact 5, and be interlocked with lid 3.Be respectively equipped with four projectioies 17 that are trapezoidal shape on two surfaces before and after this pedestal, interlock with lid four-light mouth 35 and hold so that lid 3, operating body 2, conducting contact 5, elastomer 4 are formed an integral body.

As shown in Figure 2, positive center is provided with to have and prevents the correcting post 14 of elastomer in compression process generation strain bottom pedestal, with the rebound performance of stable operation body.Pedestal left and right sides wall inner surface 13 comprises termination contact body 6 to the wall of the pedestal left and right sides in modes such as injection mouldings, wherein the pedestal side wall inner surfaces must with contact inner surface 61 at grade, this contact-making surface will contact with the conducting contact realizes switching function.

During the utility model assembling, earlier conducting contact 5 is injection-moulded in the operating body 2, termination contact body 6 is injection-moulded in the pedestal 1.Elastomer 4 is packed on the correcting post 12 of pedestal, again operating body 2 is pressed on the elastomer 4 afterwards, after 34 pairs of the handle position 21 that makes operating body and the positions, hole of lid are concentric, load onto lid 3, the handle position 21 of operating body is dropped in the hole 34 of lid.As shown in Figure 3.

As shown in Figure 1, behind the assembling finished product, because lid 2 is being pressed operating body 2, operating body 2 is being pressed elastomer 4 again, and elastomer 4 is subjected to will discharging elastic force after the elastic compression, so operating body 2 is lifted, because of conducting contact 5 is an integral body that is injection molded into operating body 2, so conducting contact 5 also lifts thereupon, the termination contact body 6 that the conducting contact 5 after lifting will be injection-moulded in the pedestal is connected again, make two contacts be in normally off, realized " the opening " in the switch.

As shown in Figure 4, operating body 2 jack-up are connected contact, make it be in normally off thereby discharge elastic potential energy under the free state behind elastomer 4 pressurizeds.When operating body 2 was subjected to certain external force, elastomer 4 further compressed, and when operating body 2 was depressed into the bottom surface, conducting contact 5 was along with decline puts in place, and conducting this moment contact 5 has broken away from termination contact body 6, and two contacts are disconnected, and has realized " pass " in the switch.

Claims

1, normally closed switch under a kind of nature, comprise pedestal (1), the lid that cooperates with pedestal (3), be arranged on the termination contact body (6) on the pedestal, be arranged at the conducting contact (5) in the pedestal cavity, operating body (2) and elastomer (4), it is characterized in that: described conducting contact (5) is arranged on the operating body (2), an operating body (2) is set in the pedestal cavity at least, two splicing ears (6) are set on the pedestal at least, the contact-making surface of terminal (61) is arranged in the pedestal cavity, between pedestal (1) and operating body (2) elastomer (4) is set at least, the shank of operating body (21) passes the perforate (34) of lid correspondence; Operating body (2) is made on the termination contact contact level (61) of conducting contact contact (51) in correspondence by the obstruct of lid (3) under the effect of elastomer (4), corresponding two-terminal contact (6) conducting.

2, switch according to claim 1 is characterized in that: the contact-making surface of described termination contact body (61) and same plane, pedestal cavity inner wall surface (13), corresponding conducting contact contact (51) also with same plane, pedestal cavity inner wall surface (13).

3, switch according to claim 1 is characterized in that: the cavity bottom of described pedestal is provided with correcting post (12).

4, switch according to claim 1 is characterized in that: cover body (32,33) before and after both sides extend to form along the pedestal outer wall before and after the described lid (3).

5, switch according to claim 4 is characterized in that: a projection (17) is set respectively on the front and back outer wall of described pedestal at least, and cover body (32,33) corresponding position is provided with the window (35) that matches.

6, switch according to claim 4 is characterized in that: described lid (3) is made of metal, and the foot of cover body (32,33) stretches out and forms leg (37).

7, switch according to claim 1 is characterized in that: four jiaos of rectangle projections (15) that four symmetrical distributions are set of described pedestal inner chamber.

8, switch according to claim 1 is characterized in that: four jiaos of described pedestal (1) opening surface are provided with locating piece (14), and four angle correspondences of lid upper plate portion (31) are opened in the positioning port (36) that locating piece (14) cooperates.

9, switch according to claim 1 is characterized in that: two and two are set with upper plenum in the described pedestal (1), corresponding setting operation body (2), elastomer (4) and conducting contact (5), termination contact body (6) in each cavity.

10, switch according to claim 1 is characterized in that: the opening of described pedestal inner chamber is on one of them face of upper surface, leading flank, trailing flank, left surface and the right flank of pedestal, and the position, hole (34) of lid is corresponding with the pedestal lumen openings.