CN209071168U - A kind of microswitch - Google Patents

Abstract

The utility model provides a kind of microswitch, first terminal, Second terminal, third terminal, movable plate, bracket, tension spring, holder assembly and switch including shell and setting inside the shell；The lid that shell is set on the base by pedestal and removably forms, and the top of lid is equipped with switch slot；Support column is equipped with above the right side of holder assembly, the medial surface of support column is equipped with support slot；One end of bracket is mounted in third terminal, and the other end is mounted in support slot；One end of movable plate is fastened in the groove in third terminal, and one end of tension spring is linked up on bracket, and other end hook is in the mounting hole in movable plate；The setting of switch is in switch slot；Microswitch further includes the sub- seal closure of a switch, is equipped with fixture block on two lateral surface of left and right of lid；Be equipped on two medial surface of left and right of pedestal with the matched card slot of fixture block, when installation, fixture block is fastened on the installation that lid and pedestal are realized in card slot.The utility model structure is simple, good airproof performance.

Description

A kind of microswitch

Technical field

The utility model relates to microswitch, in particular to a kind of microswitch that sealing performance is excellent.

Background technique

It is industrially multi-field to often need to use the microswitch with leakproofness waterproof performance, to the reliability of switch It is more demanding；Such as automobile control, home wiring control, Industry Control field can be used in the environment of meeting water drenching or more dirt.

There is small contact separation and tension spring type drive mechanism with the microswitch of Dimension Types on the market at present, use shell Covering, outside drive rod can be installed driven, passed with defined stroke and defined power by external driving mechanism It leads on internal tension springs, travelling contact is pushed to carry out the contact point structure of switch motion.Its driving part is using hot melt shell densification The mode of rubber seal reaches sealing effect, and terminal part fills out sealing using glue and reaches sealing effect, can be useful in Under Weak current, while there is a kind of microswitch of extra high reliability and long-life.

Have following defect with the microswitch of Dimension Types on the market at present:

1, switch sub-sealing-ring is to achieve the effect that sealing by shell hot melt extruded, to lid stock and switch sealing It is higher to enclose heat resistant requirements, to cause increased costs.

2, glue is injected after pressing at terminal using simple tooling to fill out sealing and reach sealing effect, complex process, tooling Cloak is easy to produce at pressing, and glue can be detached from by larger external force with switch case, waterproof effect occur Poor phenomenon.

Utility model content

That the technical problem to be solved by the present invention is to provide a kind of structures is simple, easy to install and use, sealing effect is good Microswitch.

In order to achieve the above objectives, the technical solution of the utility model is as follows:

A kind of microswitch, including shell and setting first terminal inside the shell, Second terminal, third terminal, can Movable plate, bracket, tension spring and switch；The lid that shell is set on the base by pedestal and removably forms, lid Top is equipped with switch slot；There is the seat of installation first terminal, Second terminal, third terminal, movable plate, bracket, tension spring in pedestal Component, by being successively arranged third terminal, first terminal and Second terminal from left to right on holder assembly；It is set above the right side of holder assembly There is support column, the medial surface of support column is equipped with support slot；One end of bracket is mounted in third terminal, and the other end is mounted on branch It supports in slot；The middle part of movable plate is equipped with mounting hole, and one end of movable plate is fastened in the groove in third terminal, one end of tension spring Hook is on bracket, and other end hook is in the mounting hole in movable plate；The setting of switch switchs slot by upper layer in switch slot Slot and lower layer's switch slot composition are switched, the diameter that upper layer switchs slot is greater than the diameter of lower layer's switch slot, and the lower end for switching son passes through Lower layer's switch slot enters interior of shell, and is located above tension spring；It is clearance fit that lower layer, which switchs between slot and switch,；It opens on upper layer It closes and is equipped with first annular boss in slot, the top of first annular boss is equipped with the second annular convex platform, the diameter of the second annular convex platform Greater than the diameter of first annular boss；There are the first gap, the second annulars between second annular convex platform and upper layer switch trench bottom There are the second gaps between boss and upper layer switch groove sidewall；

The top of switch is equipped with along the groove for switching sub- circumferencial direction setting；The microswitch further includes switch Seal closure, the upper and lower end opening of seal closure, inner hollow；When installation, the upper opening of seal closure is set in the groove on switch Interior, the lower part of seal closure passes through the second gap and is nested in the switch slot of upper layer, the thickness phase of the thickness of seal closure and the second gap Together；

It is equipped with fixture block on two lateral surface of left and right of lid, the thickness of fixture block is from top to bottom sequentially reduced；The left and right of pedestal Be equipped on two medial surfaces with the matched card slot of fixture block, when installation, fixture block is fastened on the installation that lid and pedestal are realized in card slot.

In one embodiment of the utility model, the bottom for switching sub- seal closure extends outwardly along seal closure circumferencial direction Side is prolonged in formation.

In one embodiment of the utility model, the contact on first terminal, Second terminal is integrally formed in terminal On.

Through the above technical solutions, the beneficial effects of the utility model are:

The utility model switchs son, the sub- seal closure of switch and the combination sealing mode for switching slot using special construction, Improve sealing effect；Furthermore pedestal and lid are installed using dismountable connection type, the whole strong of shell is improved Degree.

Detailed description of the invention

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor Under, it is also possible to obtain other drawings based on these drawings.

Fig. 1 is the utility model microswitch structure explosive view；

Fig. 2 is that the utility model microswitch does not install switch and switchs the structural schematic diagram of sub- seal closure；

Fig. 3 is the utility model microswitch structure schematic diagram；

10, first terminal 20, Second terminal 30, third terminal 40, movable plate 50, tension spring 60, switch 61, it is recessed Slot 70, pedestal 80, lid 81, fixture block 90, groove 100, holder assembly 101, support column 102, support slot 110, upper layer Switch slot 111, first annular boss 112, the second annular convex platform 113, the first gap 114, the second gap 120, lower layer open It closes slot 130, the sub- seal closure 131 of switch, prolong side 140, bracket.

Specific embodiment

In order to be easy to understand the technical means, creative features, achievement of purpose, and effectiveness of the utility model, under Face combines and is specifically illustrating, and the utility model is further described.

Referring to shown in Fig. 1 to Fig. 3, the utility model discloses a kind of microswitches, including shell and setting are in shell Interior first terminal 10, Second terminal 20, third terminal 30, movable plate 40, bracket 140, tension spring 50 and switch 60；Shell The lid 80 by pedestal 70 and being removably set on the base forms, and the top of lid 80 is equipped with switch slot；In pedestal 70 With installation first terminal, Second terminal, third terminal, movable plate, bracket, tension spring holder assembly 100, on holder assembly 100 by It is successively arranged third terminal, first terminal and Second terminal from left to right；Support column 101 is equipped with above the right side of holder assembly 100, The medial surface of support column 101 is equipped with support slot 102；One end of bracket 140 is mounted in third terminal 30, and the other end is mounted on In support slot 102；The middle part of movable plate 40 is equipped with mounting hole, and one end of movable plate 40 is fastened on the groove 90 in third terminal 30 Interior, one end of tension spring 50 is linked up on bracket 140, and the other end is linked up in the mounting hole in movable plate 40；Switch 60 is arranged In switch slot, switch slot switchs slot 110 by upper layer and lower layer's switch slot 120 forms, under the diameter of upper layer switch slot 110 is greater than The diameter of layer switch slot 120, the lower end of switch 60 passes through lower layer's switch slot 120 and enters interior of shell, and is located on tension spring 50 Side；It is clearance fit that lower layer, which switchs between slot 120 and switch 60, reduces friction between the two, improves service life；Upper layer It switchs and is equipped with first annular boss 111 in slot 110, the top of first annular boss is equipped with the second annular convex platform 112, the second annular The diameter of boss 112 is greater than the diameter of first annular boss 111；Between second annular convex platform 112 and upper layer switch 110 bottom of slot There are the first gaps 113, are used for a long time switching sub- seal closure, and after sealing performance decline, the first gap 113 can be as water storage Space further increases sealing performance；There are the second gaps between second annular convex platform 112 and upper layer switch 110 side wall of slot 114.

The top of switch 60 is equipped with along the groove 61 for switching sub- circumferencial direction setting；Microswitch further includes switch Seal closure 130 switchs sub- seal closure 130 and is made of elastic material, switchs sub- about 130 end opening of seal closure, inner hollow；Peace When dress, the upper opening for switching sub- seal closure 130 is set in the groove 61 on switch 60, switchs the upper of sub- seal closure 130 Portion's openings of sizes should be slightly less than the diameter of groove 61, allow and switch sub- seal closure 130 and be firmly fastened on groove 61, improve Sealing performance；The lower part for switching sub- seal closure 130 passes through the second gap 114 and is nested in the switch slot 110 of upper layer, switchs son sealing The thickness of cover 130 is identical as the thickness in the second gap 114, improves sealing performance.

It is equipped with fixture block 81 on two lateral surface of left and right of the utility model lid 80, the thickness of fixture block 81 is from top to bottom successively Reduce；It is equipped on two medial surface of left and right of pedestal 70 and (is not drawn into figure) with the matched card slot of fixture block, when installation, fixture block 81 blocks Close the installation that lid 80 and pedestal 70 are realized in card slot；Epoxy resin can also be injected between card slot and fixture block, further Improve sealing performance.

The bottom that the utility model switchs sub- seal closure 130 is extended outward to form along seal closure circumferencial direction prolongs side 131, prolongs The setting on side can be further improved sealing performance.

When switching son 60 in a state of nature, the other end of movable plate 40 is contacted with Second terminal 20 always, when switch 60 when being depressed, and switch 60 compresses tension spring 50, and tension spring 50 drives movable plate 40 to move down, and the other end of movable plate 40 is always It is contacted with the contact on first terminal 10.

Furthermore the contact in the utility model first terminal 10, Second terminal 20 is integrally formed on terminal, specially It in mould punching first terminal and Second terminal, is sent using filamentary silver to mold, by mold synchronous automatic riveting filamentary silver to end Subdivision, riveting contact is secured, and material loss is relatively fewer, and riveting contacts position precision is higher, and dimensional stability is more preferable.

The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above.Current row The technical staff of industry is described in above embodiments and description it should be appreciated that the present utility model is not limited to the above embodiments Only illustrate the principles of the present invention, on the premise of not departing from the spirit and scope of the utility model, the utility model is also It will have various changes and improvements, these various changes and improvements fall within the scope of the claimed invention.The utility model Claimed range is defined by the appending claims and its equivalent thereof.

Claims (3)

1. a kind of microswitch, including shell and setting first terminal inside the shell, Second terminal, third terminal, movable Piece, bracket, tension spring and switch；The lid that shell is set on the base by pedestal and removably forms, lid it is upper Portion is equipped with switch slot；It is characterized in that, pedestal in have installation first terminal, Second terminal, third terminal, movable plate, bracket, The holder assembly of tension spring, by being successively arranged third terminal, first terminal and Second terminal from left to right on holder assembly；The right side of holder assembly Upper side is equipped with support column, and the medial surface of support column is equipped with support slot；One end of bracket is mounted in third terminal, the other end It is mounted in support slot；The middle part of movable plate is equipped with mounting hole, and one end of movable plate is fastened in the groove in third terminal, draws One end of spring is linked up on bracket, and other end hook is in the mounting hole in movable plate；The setting of switch is in switch slot, switch Slot switchs slot by upper layer and lower layer's switch slot forms, and the diameter that upper layer switchs slot is greater than the diameter of lower layer's switch slot, switchs son Lower end passes through lower layer's switch slot and enters interior of shell, and is located above tension spring；Match between lower layer's switch slot and switch for gap It closes；Upper layer switchs and is equipped with first annular boss in slot, and the top of first annular boss is equipped with the second annular convex platform, the second convex annular The diameter of platform is greater than the diameter of first annular boss；There are the first gap between second annular convex platform and upper layer switch trench bottom, There are the second gaps between second annular convex platform and upper layer switch groove sidewall；

The top of switch is equipped with along the groove for switching sub- circumferencial direction setting；The microswitch further includes switch sealing It covers, end opening above and below seal closure, inner hollow；When installation, the upper opening of seal closure is set in the groove on switch, close The lower part of sealing cover passes through the second gap and is nested in the switch slot of upper layer, and the thickness of seal closure is identical as the thickness in the second gap；

It is equipped with fixture block on two lateral surface of left and right of lid, the thickness of fixture block is from top to bottom sequentially reduced；In the left and right two of pedestal Be equipped on side with the matched card slot of fixture block, when installation, fixture block is fastened on the installation that lid and pedestal are realized in card slot.

2. a kind of microswitch according to claim 1, which is characterized in that switch the bottom of sub- seal closure along seal closure circle Circumferential direction, which extends outward to form, prolongs side.

3. a kind of microswitch according to claim 1, which is characterized in that the contact on first terminal, Second terminal is It is integrally formed on terminal.