CN2183030Y

CN2183030Y - Micro switch

Info

Publication number: CN2183030Y
Application number: CN 93247754
Authority: CN
Inventors: 林俊慧
Original assignee: XITONG ELECTRONIC IND CO Ltd
Current assignee: XITONG ELECTRONIC IND CO Ltd
Priority date: 1993-12-24
Filing date: 1993-12-24
Publication date: 1994-11-16
Anticipated expiration: 2003-12-24

Abstract

The utility model relates to a microswitch. In the utility model, a reversely H-shaped metal piece, an N-shaped metal piece and an elastic piece are provided, the two pins of the N-shaped metal piece are inserted into the slot hole of a bottom cover as a normally open pin end, the reversely H-shaped metal piece is inserted into the other slot hole of the bottom cover as a common pin end, the metal elastic piece is provided with an arc-shaped part, when the arc-shaped part is inserted into the upper end of the reversely H-shaped metal piece, the arc-shaped part has elastic prestressing force because of the guiding of the inclined surface of the end of the reversely H-shaped metal piece. The bottom of the upper cover is provided with a pressing projection, and when the upper cover and the bottom cover is buckled, the pressing projection can press various pins free of loosening.

Description

Micro switch

The utility model relates to a kind of sensitive switch.

Existing sensitive switch generally is to be fixed in bottom portion with pin molding (molding), and then hang shell fragment with the manual type group, or be pulled spring, refill Activate Button and loam cake, again the binding of pin is washed open with punch press, and finished the finished product of a sensitive switch.These commonly use pin molding in the sensitive switch, hang shell fragment or draw and connect spring, wash away binding, and these programs are accurate action, not only need drop into a large amount of equipment and manpower, and the product percent of pass that produces out are not high.

For example shown in the figure one, be in the located by prior art, adopt the sensitive switch sectional structure of a spring as the elastic force source, shell is an insulator outside this sensitive switch, its sensitive switch inside has a common ends COM, normal-closed end NC and normal beginning NO, and extends the usefulness of the bottom of sensitive switch as the circuit welding via pin.Connect a metal moving plate T in sensitive switch inner utilization one spring SP, common ends COM is fixed in this metal moving plate T system, and contact with normal-closed end NC and produce the loop, when an Activate Button P is subjected to external force and presses down, promptly impel spring SP to drive metal moving plate T and press down, metal moving plate T is contacted with Chang Kaiduan NO, and make common ends COM and Chang Kaiduan NO constitute a circuit turn-on loop, when Activate Button P removes external force, promptly can be subjected to the elastic force of spring SP and upwards return back to original position.

The aforesaid microswitch structure of commonly using, its utilize spring as its common ends and normal-closed end or Chang Kaiduan to produce the effect in loop, this spring must connect a metal moving plate with the media as common ends and normal-closed end or Chang Kaiduan generation loop, the very complexity so its structure seems in addition.Assembling this one when commonly using sensitive switch, must with three pins earlier in addition molding fix, then again with Activate Button, spring, the metal moving plate, be assembled in the housing one by one, event is labor intensive comparatively, especially one of this spring is held to draw and is connected on one of sensitive switch common ends COM side, the other end must draw and is connected on the metal moving plate, so when bond moving plate and spring, must be dependent on artificial assembling fully and just can finish, particularly metal moving plate and spring are all superfine little, it is also minimum to hang spring breach and hole, and quite big to people's eye injury, assembling speed is slow, by contrast, the cost of labor of its manufacturing is also with regard to relative improve.

And be depicted as the sectional structure chart that another kind is commonly used sensitive switch as figure two, this sensitive switch is by a loam cake and a lower cover be combined into, this loam cake and lower cover are insulator, the loam cake top is provided with an Activate Button P, have in the lower cover and hold COM altogether, one normal-closed end NC, an one Chang Kaiduan NO and a metal clips M, this common ends COM, normal-closed end NC and normal beginning NO are made by metallic conductor, then can overlap unification metal clips M on the common ends COM in its two concave points place, and this shell fragment M also is provided with a reverse V-shaped tabs M1, this reverse V-shaped tabs M1 itself has an elastic force effect, when loam cake combines with lower cover, make this Activate Button be positioned at this metal clips M, when Activate Button was subjected to an external force to be depressed into shell fragment M, this shell fragment M caused common ends COM and Chang Kaiduan NO to produce the loop because of being subjected to external force sagging; And after removing external force, this shell fragment M is subjected to the shell fragment effect that reverse V-shaped tabs M1 had own, and makes shell fragment M bullet to original position.

The structure of commonly using shown in the figure two is that extension spring with figure one has become the compression spring, but in assembly work, metal clips M to be linked in common ends COM and go up its two concave points place, still non-easy thing, each assembly in its sensitive switch, three pin moldings must be fixed equally, again can by manually being assembled one by one.And minimum because of metal clips, the problem of operational difficulty is arranged equally, and still be difficult to automated assembling equipment (for example fit of vibrating disk arranged) and do quick assembling.

In view of every shortcoming of commonly using sensitive switch, the utility model main purpose is for a kind of sensitive switch is provided, and it is simple and easy inputs action when each assembly of assembling, and is very convenient and fast, and is suitable for the do operation of assembling automatically.And do not need as in the technology of commonly using, with the pin molding, hang shell fragment or draw and connect spring, wash away many programs such as binding and can finish a finished product, not only save a large amount of equipment and manpower, and can produce out the sensitive switch of high product acceptance rate.

Another purpose of the utility model provides a kind of sensitive switch, sheet metal structure at sensitive switch inside is improved, it is to be inserted in the slotted eye of bottom with a ∏ shape metalwork, normal opened contact as sensitive switch, and the pin of an anti-h shape metalwork formation arranged in addition, insert one of the bottom preformed hole as pin jointly with its pin.Be subjected to being located at when its metal clips loam cake Activate Button pressure on time, can send signal by ∏ type metalwork pin.

A purpose again of the utility model provides a kind of in conjunction with stable sensitive switch, the metalwork of its inside, system suppresses pin by loam cake, and make whole assembling operation, as long as after the metalwork input finished, loam cake, bottom are interlocked again, insert Activate Button and promptly finish finished product, whole assembling process is very convenient and do not have a loosening phenomenon of pin.

The purpose of this utility model reaches as follows:

A kind of sensitive switch, it is by loam cake, a bottom and an Activate Button are formed, between this loam cake and bottom, be provided with metalwork, it is characterized in that: be respectively equipped with the slotted eye that inserts common pin end and often open the pin end on this bottom, other establishes the resilient metal member of two ends bending, the one end interlocks with common pin end and touches, and establish a shell fragment bow portion on this resilient metal member, the common pin end of loam cake bottom compacting, also be provided with the projection that the pin end is often opened in compacting at the loam cake inwall in addition, form the inclined-plane of importing and buckle resilient metal member in common pin upper end, this resilient metal member one end is touched button and is compressed, and the other end is beated often opening between the salient point of establishing the salient point established on the pin end and loam cake bottom.

The purpose of this utility model can also reach as follows:

Described sensitive switch is characterized in that, this Activate Button head has non-return device.

Effect of the present utility model is: in above-mentioned the utility model structural design, when assembling, only needing that ∏ type metalwork is inserted bottom with its two pins runs through in the slotted eye, again pin is inserted in the slotted eye, insert resilient metal member again, fasten upper and lower covers and insert the Activate Button that head has check design again, so simple program just can be finished the sensitive switch finished product, and drawing spring that must be not any, buckle resilient metal member and molding pin, punch press are washed pin binding supervisor open.After loam cake and lower cover fasten, insert the Activate Button that head has the check design again, Activate Button has the design of check, mainly be to allow all part assembling processes all be to insert from top to bottom, can make the automatic assembling machine device that the compound action of upset part needn't be arranged, help reaching of assembling action automatically.In addition, produce the light crisp sound for making resilient metal member when jumping, be provided with a salient point above ∏ type metalwork, and also establish a salient point bottom the loam cake, resilient metal member is jumped and will be produced the light crisp sound therebetween.

In order further to understand feature of the present utility model and technology contents, see also following about describing in detail and accompanying drawing, yet appended graphic only provide with reference to and explanation usefulness, be not to be used for the utility model is limited.The accompanying drawing of relevant this embodiment is:

Figure one is for commonly using the sectional structure chart of sensitive switch;

Figure two commonly uses the sectional structure chart of sensitive switch for another kind;

Figure three is the sectional structure chart of the utility model;

Figure four is the stereochemical structure exploded view of the utility model;

Finished product stereogram when figure five finishes and fastens for the utility model assembling.

Please consult simultaneously shown in figure three and the figure four, it shows the sectional structure chart and the three-dimensional exploded view thereof of the sensitive switch of the utility model respectively.Because this type of sensitive switch, mainly be to be applied in telecommunication periphery product, for example the button of sliding mouse, keyboard etc. uses, generally speaking, this kind only used need provide normal opened contact (Normal Open) to get final product, and normally closed contact (Normal Close) need not arranged, therefore the utility model preferred embodiment below only provides normal opened contact, as an illustration the structural design of this creation.

As shown in figure three and figure four, the housing of its sensitive switch also is made of a loam cake 1 and a bottom 2, offers a preformed hole 15 at about middle section position place of loam cake 1, has the usefulness of the Activate Button 4 of check design as the installing head.Between loam cake 1 and bottom 2, has the resilient metal member 3 that gives a discount in two ends, it is an elastic sheet metal, end in contact on the pin 31 of one end and anti-h type metalwork, the pin 31 of anti-h type metalwork is as the common pin end (COM) of the utility model, other is provided with a ∏ shape metalwork, and it has second pin 32 and the 3rd pin 33.Also offer at bottom 2 and to run through slotted eye, can insert for aforementioned pin 31 and second and

third pin

32,33 respectively, shown in figure three.

The purpose that gives a discount in the structural design of the resilient metal member 3 of the utility model two ends discounting is the design that helps self-feeding, its shell fragment tail end is that the pin 31 with common pin end interlocks and touches, dash at the other end of resilient metal member 3 and to set out shell fragment bow portion 34, one contact-making surface 35 is then arranged at its terminal position.Second pin 32 interlinks into a ∏ type metalwork with the 3rd pin 33, and so design just as described above, is that the button of the peripheral product of power supply news etc. uses, and its need are pressed connection and got final product, and need not to provide the usefulness of normally closed contact (Normal Close) end.

Resilient metal member 3, when inserting anti-h type metalwork upper end, be subjected to the importing effect of anti-h type metalwork inclined-plane 311, upper end and 312, and make the shell fragment bow portion 34 on the resilient metal member 3 produce prestressing force, and snap in anchor point, the prestressing force that the bow portion of shell fragment metalwork 3 is produced makes sensitive switch have the performance of jump sense of touch when operation.When this external loam cake 1 was interlocked with bottom 2, loam cake inside propped up the pre-end of anti-h type metalwork just, and loam cake side compacting projection 13 props up the side upper end of ∏ type metalwork just, made pin 31 and second and

third pin

32,33 unlikely loosening, and structure is more firm.

In above-mentioned the utility model structural design, when assembling, only needing that ∏ type metalwork is inserted bottom 2 with its two

pins

32,33 runs through in the slotted eye, again pin 31 is inserted in the slotted eye 21, insert resilient metal member 3 again, fasten upper and lower covers and insert the Activate Button 4 that head has check design again, so simple program just can be finished the sensitive switch finished product, and drawing spring that must be not any, buckle resilient metal member and molding pin, punch press are washed pin binding supervisor open.After loam cake 1 fastens with lower cover 2, insert the Activate Button 4 that head has the check design again, Activate Button 4 has the design of check, mainly be to allow all part assembling processes all be to insert from top to bottom, can make the automatic assembling machine device that the compound action of upset part needn't be arranged, help reaching of assembling action automatically.The check design is the overhead kick that grows two sheets such as arrow at the head of Activate Button, and this overhead kick tool elasticity can be inserted in the preformed hole 15 of loam cake easily, but then is difficult for withdrawing from after inserting.In addition, produce the light crisp sound for making resilient metal member 3 when jumping, be provided with a salient point 36 above ∏ type metalwork, reach loam cake 1 bottom and also establish a salient point 14, resilient metal member 3 is jumped and will be produced the light crisp sound therebetween.

The utility model in conjunction with after finished product, shown in figure five, when its loam cake 1 combines with bottom 2, by the joining hole 25 of loam cake dual-side with the oblique angle fixture block 24 mutual fastenings of bottom fastening the combination.

Claims

1, a kind of sensitive switch, it is by loam cake, a bottom and an Activate Button are formed, between this loam cake and bottom, be provided with metalwork, it is characterized in that: be respectively equipped with the slotted eye that inserts common pin end and often open the pin end on this bottom, other establishes the resilient metal member of two ends bending, the one end interlocks with common pin end and touches, and establish a shell fragment bow portion on this resilient metal member, the common pin end of loam cake bottom compacting, also be provided with the projection that the pin end is often opened in compacting at the loam cake inwall in addition, form the inclined-plane of importing and buckle resilient metal member in common pin upper end, this resilient metal member one end is touched button and is compressed, and the other end is beated often opening between the salient point of establishing the salient point established on the pin end and loam cake bottom.

2, sensitive switch according to claim 1 is characterized in that, this Activate Button head has non-return device.