CN105118721B

CN105118721B - Microswitch and its installation method

Info

Publication number: CN105118721B
Application number: CN201510627300.7A
Authority: CN
Inventors: 潘晓勇
Original assignee: SUZHOU LAMBO CONTROL TECHNIQUES Co Ltd
Current assignee: SUZHOU LAMBO CONTROL TECHNIQUES Co Ltd
Priority date: 2015-09-28
Filing date: 2015-09-28
Publication date: 2018-02-06
Anticipated expiration: 2035-09-28
Also published as: CN105118721A

Abstract

Present invention is disclosed a kind of microswitch and its installation method, microswitch includes housing, transmission parts, act reed and leg, housing includes two end faces being oppositely arranged and the side being arranged between two end faces, end face and side are surrounded to form a space, action reed is placed in housing, transmission parts are divided into drive end and driven end, drive end stretches into enclosure interior and is used to apply pressure to action reed, driven end extends to hull outside, the driven end of leg and transmission parts is arranged at the same side of housing, a through hole is first opened up during installation on pcb board, driven end is passed through into through hole from the back side of pcb board again, finally leg is fixedly connected with the pad at the pcb board back side.The driven end of present invention installation back casing and transmission parts is located at the tow sides of pcb board respectively, it is beneficial to the integral thickness for reducing pcb board, and the driven end of transmission parts will not be blocked by housing, the devices such as LED, hollow button can be set in region in its vicinity, improve the flexibility of electrical design.

Description

Microswitch and its installation method

Technical field

The present invention relates to microswitch technical field, and in particular to a kind of microswitch and its installation method.

Background technology

Microswitch is that have small contact separation and snap-action mechanism, and it is dynamic to carry out switch with defined stroke and defined power The contact mechanism of work.

External mechanical force is acted on power on action reed by transmission parts, is produced when acting reed and being displaced to critical point Raw snap action, make movable contact and fixed contact quick-make or the disconnection of action reed side.

After the active force on transmission parts is removed, action reed produces counteragent power, when transmission parts reverse stroke After the action critical point for reaching reed, counteragent is instantaneously completed.

Microswitch has that contact spacing is small, actuating length is short, by the characteristics of power is small, break-make is rapid, is widely used in The fields such as electronic equipment, instrument and meter, mine, power system, household electrical appliance, electric equipment.

The microswitch that prior art is provided is limited by self structure（Transmission parts are arranged at housing front, and leg is set It is placed in back side of shell）, microswitch is overall all in the front of pcb board after attachment, has following defect：

1st, height of the microswitch apart from pcb board front face surface（Body height adds the height of transmission parts）It is larger, lead Cause pcb board integral thickness big, it is impossible to meet the needs of modern electronic product Miniaturization Design；

2nd, blocked by housing, the devices such as LED, hollow button can not be set close to the region of microswitch in pcb board front Part, it have impact on the flexibility of electrical design.

The content of the invention

It is an object of the invention to provide a kind of microswitch and its installation method.

For achieving the above object, the present invention adopts the following technical scheme that：

Microswitch, including housing, transmission parts, action reed and leg, what the housing was oppositely arranged including two End face and the side being arranged between two end faces, the end face and the side are surrounded to form a space；

The action reed is placed in the housing；

The transmission parts are divided into drive end and driven end, and the drive end stretches into the enclosure interior and is used for described dynamic Make reed and apply pressure, the driven end extends to the hull outside；

The driven end of the leg and the transmission parts is arranged at the same side of the housing.

As further improved technical scheme of the present invention：The housing includes first end face and second end face, and described End face be arranged in parallel with the second end face, and the first end face is provided with an opening, the driven ends of the transmission parts from The opening stretches out the hull outside, and the leg is set along the junction of the first end face and the side.

As further improved technical scheme of the present invention：The microswitch also includes being arranged on the enclosure interior Movable contact and stationary contact, the movable contact, stationary contact respectively with corresponding leg electrical communication.

As further improved technical scheme of the present invention：The transmission parts are buttons, one end of the button and institute State action reed to be in contact, the button other end stretches out the hull outside.

As further improved technical scheme of the present invention：The action reed is bowl-shape, the projection of the action reed Place and the button contacts, the edge of the action reed contact with the stationary contact, and the movable contact is arranged on the action On the extended line of reed axis.

The installation method of microswitch, comprises the following steps：

A through hole is opened up on pcb board；

The driven end of the transmission parts is passed through into the through hole from the back side of pcb board；

Leg is fixedly connected with the pad at the pcb board back side.

As further improved technical scheme of the present invention：The internal diameter of the through hole is slightly larger than the transmission parts driven end External diameter.

Relative to prior art, the technical effects of the invention are that：

The driven end of leg and transmission parts of the present invention is located at the homonymy of housing, installs the driven of back casing and transmission parts End is located at the tow sides of pcb board respectively, is beneficial to reduce microswitch driven end end face to the overall thick of pcb board front face surface Degree, and the driven end of transmission parts will not be blocked by housing, can set the devices such as LED, hollow button in region in its vicinity Part, improve the flexibility of electrical design.

Brief description of the drawings

Fig. 1 is the cross section structure diagram of microswitch；

Fig. 2 is the perspective cross-sectional structural representation of microswitch；

Fig. 3 is the contrast schematic diagram that microswitch provided by the present invention is arranged on existing microswitch on pcb board；

Fig. 4 be in Fig. 3 A to the schematic diagram at visual angle；

Fig. 5 be in Fig. 3 B to the schematic diagram at visual angle.

Embodiment

Below with reference to embodiment shown in the drawings, the present invention will be described in detail.But these embodiments are simultaneously The present invention is not limited, structure that one of ordinary skill in the art is made according to these embodiments, method or functionally Conversion is all contained in protection scope of the present invention.

Referring to Fig. 1 and Fig. 2, Fig. 1 is the cross section structure diagram of microswitch 100, and Fig. 2 is the solid of microswitch 100 Cross section structure diagram, for convenience of the internal structure of microswitch 100 is illustrated, transmission parts 2 shown in Fig. 2 are drawn to housing 1 It is outside.

Microswitch 100, including housing 1, transmission parts 2, action reed 3 and leg, housing 1 include relative be arranged in parallel First end face 11 and second end face 12, and the side 13 being arranged between first end face 11, second end face 12, first end face 11st, second end face 12 and side 13 are surrounded to form a space.

First end face 11, second end face 12 are all rectangle in the present embodiment, and side 13 is divided for four pieces, four pieces of sides 13 It is correspondingly arranged with the four edges of first and second end face, side 13 forms the housing 1 of cubic together with first and second end face, certainly In other embodiments, first and second end face can also be circle, and side is then cylindrical shape, and first and second end face is together with side Form the housing of cylindrical shape.

In order to facilitate the encapsulation and manufacture of microswitch 100, second end face 12 is preferably structure as a whole with side 13, and first End face 11 is preferably Split type structure with side 13.

Movable contact 4 and stationary contact 5 are provided with the housing 1, stationary contact 5 is arranged at the connection of second end face 12 and side 13 Place, movable contact 4 are arranged at the middle part of second end face 12.The electrical communication of 4 and first leg of movable contact 61, stationary contact 5 and second weld The electrical communication of pin 62.

Action reed 3 is made up of the good conductor material of elasticity, and action reed 3 is bowl-shape and is placed in housing 1, its side Edge contacts with stationary contact 5, and middle part is raised to the side of first end face 11 so that it is with movable contact 4 under normal conditions in the shape disconnected State.Bowl-shape action reed 3 is relatively thin, is beneficial to the integral thickness for reducing microswitch 100.

Transmission parts 2 divide to be stretched into the inside of housing 1 and is used for action reed 3 for drive end 21 and driven end 22, drive end 21 Apply pressure, driven end 22 is extended to outside housing 1, and the middle part of first end face 11 is provided with an opening, and driven end 22 is stretched from opening Go out outside housing 1, drive end 21 contacts with the high spot at the middle part of action reed 3.

External mechanical force acts on the driven end 22 of transmission parts 2 and passes to action reed 3, action by drive end 21 The stress deformation of reed 3 produces displacement, is turned down when acting reed 3 and being displaced to critical point to the side of second end face 12 rapidly, action Reed 3 contacts after turning down with movable contact 4, movable contact 4 causes the first leg by action reed 3 and the electrical communication of stationary contact 5 61 and the electrical communication of the second leg 62；After external mechanical force removes, action reed 3 voluntarily moves multiple to the side of first end face 11 Position, the electric connection of movable contact 4 and stationary contact 5 disconnect.

First leg 61 and the second leg 62 are set close to first end face 11, specifically, the first leg 61, the second leg 62 Set along the junction of first end face 11 and side 13, be boundary with first end face 11, first and second leg and transmission parts 2 Driven end 22 is located at the homonymy of housing 1.

Transmission parts 2 are preferably push button, and it is reed roller that certain transmission parts 2 can also select according to actual conditions The other forms such as formula, lever roller formula, short movable arm type, long movable arm type.

Present invention also offers a kind of installation method of microswitch, the installation method of the microswitch is including the use of above-mentioned Microswitch 100, the structure and operation principle of the microswitch 100 can refer to foregoing, will not be repeated here.

Join Fig. 3 to 5, the installation method of microswitch comprises the following steps：

Open up the through hole that an internal diameter is slightly larger than the external diameter of 2 driven end of transmission parts 22 on pcb board 300, the size of through hole with Driven end 22 just can be moved back and forth freely to be suitable wherein；

The driven end 22 of the transmission parts 2 is passed through into the through hole from the back side of pcb board 300；

Leg is fixedly connected with the pad at the back side of pcb board 300.

It is worth noting that, the front of pcb board 300 specifically described herein or the back side are intended merely to convenient description pcb board 300 Two sides and define, front or the back side can arbitrarily select one in two surfaces of pcb board 300（Except individual layer pcb board, individual layer Pcb board traditionally defines component side as front）, it is therefore intended that illustrate the driven end 22, housing 1 and pcb board 300 of transmission parts 2 Relative position relation.

What Fig. 3 to 5 was provided is that microswitch 100 and existing microswitch 200 provided by the present invention are arranged on pcb board Contrast schematic diagram on 300, as can be seen from Figure 3 microswitch 100 be arranged on the back side of pcb board 300, microswitch 100 Transmission parts 2 reach the front of pcb board 300 through pcb board 300, and it is Fig. 3 apart from the maximum height of the front face surface of pcb board 300 Middle H1, H1 subtract the thickness of pcb board 300 equal to the height of driven end 22；Existing microswitch 200 is entirely arranged on pcb board 300 Front, its apart from the front face surface of pcb board 300 maximum height be Fig. 3 in H2, H2 be equal to its driven end height add housing Height, it is clear that H1 be highly less than H2 height.

Meanwhile be the key area near microswitch as shown in the circle S1 in Fig. 4, because the shell of microswitch 100 Body 1 and driven end 22 are located at the both sides of pcb board 300 respectively, and driven end 22 will not be blocked by housing 1, can be in driven end 22 near zones set LED 7, hollow button（It is not shown）Deng device.

Review existing microswitch 200, its key area（Inside circle S1）Blocked by housing, it has not been convenient in this region Electronic device is installed.

Finally it should be noted that：Embodiment of above is merely illustrative of the technical solution of the present invention, rather than its limitations；To the greatest extent The present invention is described in detail with reference to aforementioned embodiments for pipe, it will be understood by those within the art that：Its according to The technical scheme described in foregoing each embodiment can so be modified, or which part technical characteristic is equal Replace；And these modifications or replacement, the essence of appropriate technical solution is departed from each embodiment technical scheme of the present invention Spirit and scope.

Claims

1. microswitch, on pcb board, including housing, transmission parts, action reed and leg, it is characterised in that it is described Housing includes two end faces being oppositely arranged and the side being arranged between two end faces, and shape is surrounded in the end face and the side Into a space；

The action reed is placed in the housing；

The transmission parts are divided into drive end and driven end, and the drive end stretches into the enclosure interior and is used for the action spring Piece applies pressure, and the driven end extends to the hull outside；

The driven end of the leg and the transmission parts is arranged at the same side of the housing, housing and driven end difference Positioned at the tow sides of pcb board, the housing includes first end face and second end face, the first end face and the second end face It is arranged in parallel, the second end face is provided with side surface configurations one, first end face and side surface configurations split, the first end face One opening, the driven ends of the transmission parts stretch out the hull outside from the opening, and the leg is along described first The junction of end face and the side is arranged at the breach of side and stretches out housing from first end face, the leg with it is described First end face is concordant, and movable contact and stationary contact are provided with the housing, and stationary contact is arranged at the junction of second end face and side, Movable contact is arranged at the middle part of second end face, the movable contact, stationary contact respectively with corresponding leg electrical communication, the action The edge of reed is contacted with the stationary contact, and the movable contact is arranged on the extended line of the action reed axis.

2. microswitch according to claim 1, it is characterised in that the transmission parts are buttons, the one of the button End is in contact with the action reed, and the button other end stretches out the hull outside.

3. microswitch according to claim 2, it is characterised in that the action reed is bowl-shape, the action reed High spot and the button contacts.

4. the installation method based on the microswitch described in claim 1, it is characterised in that comprise the following steps：

A through hole is opened up on pcb board；

Leg is fixedly connected with the pad at the pcb board back side.

5. the installation method of microswitch according to claim 4, it is characterised in that the internal diameter of the through hole is slightly larger than institute State the external diameter of transmission parts driven end.

6. the installation method of microswitch according to claim 5, it is characterised in that the transmission parts are buttons, institute The one end for stating button is in contact with the action reed, and the button other end stretches out the hull outside.

7. the installation method of microswitch according to claim 6, it is characterised in that the action reed is bowl-shape, institute State the high spot of action reed and the button contacts.