CN1157743C

CN1157743C - Button switch

Info

Publication number: CN1157743C
Application number: CNB991110277A
Authority: CN
Inventors: 小田胝彦; 小田嶋正彦
Original assignee: Alps Electric Co Ltd
Current assignee: Alps Alpine Co Ltd
Priority date: 1998-08-17
Filing date: 1999-07-27
Publication date: 2004-07-14
Anticipated expiration: 2019-07-27
Also published as: KR20000017229A; JP2000067687A; KR100346289B1; JP3803496B2; CN1245343A; TW426865B

Abstract

The present invention relate to a push button switch by waterproof treatment. The switch deform the full periphery of an outer wall 1b of a first housing 1 on a flange side 7c of a second housing 7 to form a presser part, and elastically press a water-proof member 6 to a stepped part side 1e through the flange by the presser part.

Description

Push-button switch

Technical field

The present invention relates to push-button switch, particularly relate to push-button switch through waterproof processing.

Background technology

Now, utilize accompanying drawing that existing push-button switch is described.

Fig. 4 is the front elevation of existing push-button switch, and Fig. 5 is the plane graph of existing push-button switch, and Fig. 6 is the profile of existing push-button switch.

To shown in Figure 6, first housing 10 is by the processing of insulating synthetic resin material forming as Fig. 4, forms approximate rectangularly, and it has the sidewall 10a that will be surrounded around it, bottom 10b and be positioned at the central circular negative area 10c of upper surface.In addition, on the upper surface of each sidewall 10a,, form groove 10d with given depth size along its Width; And, form four outstanding upward columniform projection 10f at the 10e place, each turning of the upper surface of sidewall 10a.

First fixed contact 11 is that metal plate cut-out, bending process, formation is roughly L-shaped, and it has contact part 11a and terminal part 11b.This first fixed contact 11 is to embed in first housing 10 to form, it is configured to make the surface of its contact part 11a to expose from the center of the negative area 10c of first housing 10, and its terminal part 11b, then from the side of a sidewall 10a of this first housing 10, along this sidewall 10a, outstanding downwards.Embed first fixed contact 11 that forms in this first housing 10, be configured on first housing 10.

Second fixed contact 12 also is to be cut off and bending process by metal plate, makes roughly L-shapedly, and it has contact part 12a and terminal part 12b.This second fixed contact 12 also is to embed in first housing 10 to form, it is configured to make its contact part 12a, clamp the contact part 11a of aforementioned first fixed contact of exposing from the center of the negative area 10c of first housing 10 on the surface 11, near the inner peripheral edge of this negative area 10c, and also expose on its surface; And its terminal part 12b is then from the sidewall of this first housing 10, outstanding downwards along this sidewall.

Moving contact 13, by the dull and stereotyped cut-out of elastic metallic, extrusion process, it is vaulted to make circle.This moving contact 13 is configured in the negative area 10c of first housing 10, and the circumference edge portion of moving contact 13 contacts with the contact part 12a of second fixed contact 12; And moving contact 13 is configured to cover the state of the contact part 11a of first fixed contact 11.

First core bar 14 is processed into by the insulating synthetic resin material forming, roughly be disc, it has small diameter portion 14a, the major diameter part 14b that connects together with the lower end of small diameter portion 14a, and from the outstanding downwards pressing part 14c of this major diameter part 14b.This first core bar 14 is configured to make the summit of the vaulted moving contact 13 of its pressing part 14c and circle to contact.

Insulator 15 for example, can be made by polyimide resin material of sheet etc., roughly is cross.This insulator 15 is configured in the groove 10d of upper surface of sidewall 10a of first housing 10, and, stop up negative area 10c; Simultaneously, contact with the upper surface of the small diameter portion 14a of first core bar 14 again.

Flashing member 16 is made by the elastomeric material (for example, the EPDM material) of sheet, roughly is cross.This flashing member 16 overlaps on the insulator 15, is configured in the groove 10d of upper surface of sidewall 10a of first housing 10.

Second housing 17 is processed into by the insulating synthetic resin material forming, and is roughly rectangular, and it has the sidewall 17a that surrounds around it, with the upper wall 17b that is being connected with sidewall 17a.In addition,, make the small diameter bore 17c of a circle, below this small diameter bore 17c, form the large diameter hole 17d of a circle at the center of upper wall 17b.In addition, on four angles of the upper wall 17b that comprises each sidewall 17a, make the barbed portion 17e of circular arc.This barbed portion 17e extends near the lower surface of sidewall 17a; And on four angles of the lower end of sidewall 17a, form boss 17g; On this boss 17g, make four hole 17f that connect along the above-below direction of Fig. 4 respectively.

This second housing 17 is configured to make the lower surface of its sidewall 17a to contact with the upper surface of flashing member 16.In this state, among the projection 10f patchhole 17f of first housing 10, the top of projection 10f highlights upward from hole 17f.In addition, the top of the projection 10f that highlights upward from hole 17f, methods such as (for example) available heat riveted joint are fixedlyed connected second housing 17 with first housing 10, become one.

Second core bar 18 is processed into by the insulating synthetic resin material forming, and it has columniform button part 18a, is located at the flange portion 18b of button part 18a lower end and gives prominence to pressing part 18c below flange portion 18b.In addition, pressing part 18c has columniform projection 18d and on the side of this projection 18d, for example, spends three supporting part 18e that dispose every 120.

Under the state in pressing part 18c is placed on the large diameter hole 17d of second housing 17, it is outstanding to outside (top) that the button part 18a of this second core bar 18 connects small diameter bore 17c, and the upper surface of flange portion 18b is contacted with the upper wall 17b of second housing 17.Like this, second core bar 18 just can not extracted from second housing 17.

In addition, in this state, the front end face (lower surface) of the projection 18d of second core bar 18 contacts with the upper surface of flashing member 16.

Secondly, the action of existing push-button switch is described.

When the button part 18a with second core bar 18 of this push-button switch pushed downwards, the projection 18d of this second core bar 18 pushed the approximate centre part of flashing member 16 and insulator 15 downwards.When this insulator 15 was pressed towards the below, first core bar 14 that contacts with this insulator 15 was pressed towards the below.By this push action, the pressing part 14c of first core bar 14 pushes the vaulted moving contact 13 of circle downwards.In addition, when pushing moving contact 13, moving contact 13 bends downwards, and the back side of moving contact 13 is contacted with the contact part 11a of first fixed contact 11.By with the contacting of this contact part 11a, first fixed contact 11 and second fixed contact 12 are by moving contact 13 conductings, so push-button switch is in on-state.

When the downward pressing force of the button part 18a of second core bar 18 is removed, effect by the counter motion restoring force of justifying vaulted moving contact 13, the pressing part 14c of first core bar 14 is pressed towards the top from this state, at this moment, moving contact 13 leaves first fixed contact 11, like this, this push-button switch is in off state.After, carrying out aforementioned activities by opposite order, the button part 18a of second core bar 18 gets back to original position.

Like this,, push moving contact 13, can produce switch motion trippingly, and can carry out continuous action repeatedly by second core bar 18 and first core bar 14 etc.

First housing 10 of existing push-button switch and the assembling of second housing 17 are described below.

At first, under the state on the upper surface of the sidewall 10a that insulator 15 and flashing member 16 is placed on first housing 10, the hole 17f of second housing 17 is enclosed within on the projection 10f of first housing 10.

In this state, for example, make the head portion crimp of projection 10f, utilize the crimp of this projection 10f, first housing 10 and second housing 17 are become one by methods such as use hot rivetings.

Like this, in existing push-button switch, pressed from both sides under the state of position at insulator 15 on first housing 10 and second housing 17 and flashing member 16, four columniform projection 10f that are located on first housing 10 are inserted among four hole 17f of second housing 17, make the top crimp of this projection 10f by hot riveting, and first housing 10 and second housing 17 are become one.

But, become one because first housing 10 and second housing 17 are crimp by four projection 10f, when carrying out crimp, because the deviation of extruding force can produce distortion or small gap between adjacent projection 10f.Because the influence in this distortion or gap between first housing 10 and second housing 17 that clamp insulator 15 and flashing member 16, can produce the place that is adjacent to inadequately; Because the place that these are adjacent to inadequately, can not form airtight fully, therefore, some problem of the water proofing property of this push-button switch.

Summary of the invention

The present invention proposes in order to address the above problem, and its objective is the push-button switch that a kind of good waterproof performance will be provided.

Push-button switch of the present invention has: first housing, and it has outer wall section, be located at first recess and second recess of the step on the inner rim of this outer wall section and be located at step part between this first recess and second recess; Be configured in the interior fixed contact of first recess of this first housing; Be configured in the moving contact on this fixed contact top; Operate first pressing member of this moving contact; Stop up aforementioned first recess, be positioned at aforementioned second recess, be configured in the flashing member on the aforementioned step part of aforementioned first housing; With second housing with flange portion, this second housing makes outstanding and this second pressing member of receipts dress of second pressing member, so that can operate this second pressing member from the outside, this flange portion is contained in by receipts in second recess of first housing, clips aforementioned flashing member between this second housing and the aforementioned step part; Wherein, make the full periphery of the aforementioned outer wall section of aforementioned first housing, distortion on the said flange part of aforementioned second housing, form pressing section, utilize this pressing section,, aforementioned flashing member flexibly is pressed on the aforementioned step part by the said flange part.

In addition, push-button switch of the present invention is made raised line on the said flange lower surface partly of aforementioned second housing, utilize this raised line to compress aforementioned flashing member.

Push-button switch of the present invention also is provided with the insulator of sheet on the lower surface of aforementioned flashing member, the aforementioned dielectric body is configured on the aforementioned step part, and this insulator and flashing member utilize aforementioned pressing section, by the said flange part, flexibly be pressed on the aforementioned step part.

Description of drawings

Fig. 1 is the plane graph of the push-button switch of the embodiment of the invention;

Fig. 2 is the profile of the push-button switch of the embodiment of the invention;

Fig. 3 is the key diagram that is used to illustrate the manufacture method that second housing with the push-button switch of the embodiment of the invention engages with its first housing;

Fig. 4 is the front elevation of existing push-button switch;

Fig. 5 is the plane graph of existing push-button switch;

Fig. 6 is the profile of existing push-button switch.

Embodiment

As depicted in figs. 1 and 2, first housing 1 is processed into by the insulating synthetic resin material forming, and is roughly cylindrical; It has the circular negative area 1a of the quadruple board platform rank shape that is made in the upper surface center and from the upper surface of negative area 1a, inwardly the outer wall section 1b of outstanding annular.In addition, negative area 1a is made of the first recess 1d of the minor diameter of the large diameter second recess 1c of upper end and lower end; Therefore, between the first recess 1d and the second recess 1c, has step part 1e.

As described below, the full periphery of aforementioned outer wall section 1b can compactedly be out of shape, and like this, forms pressing section on outer wall section 1b.

Fixed contact 2 is made by metal wire rod, and it is through cutting off and bending process formation, and is roughly L-shaped.It has contact part 2a and terminal part 2b.In addition, this fixed contact 2 is that many (for example two) metal wire rods insert formation in first housing 1; Expose from the bottom surface of the first recess 1d on the surface of contact part 2a, and near each other; Terminal part 2b is then from the position relative with the bottom surface of first housing 1, and about and contact part 2a departs from 180 degree, and is outstanding downwards.

Moving contact 3 for example is with elastic metallic flat boards such as phosphor bronzes, cuts off, press process makes, and it is vaulted that it is circle.This moving contact 3 is configured in the first recess 1d of first housing 1, and the circumference edge portion of moving contact 3 contacts with the bottom surface of the first recess 1d of first housing 1.In this state, moving contact 3 can cover two contact part 2a.

First core bar 4 is processed into by the insulating synthetic resin material forming, and is roughly in the form of annular discs; It has small diameter portion 4a, the major diameter part 4b that connects together and make with the lower end of small diameter portion 4a, and from the lower surface of major diameter part 4b, the pressing part 4c that highlights downwards.The lower surface of pressing part 4c is done in the arc-shaped.This first core bar 4 is configured to make the summit of the vaulted moving contact 3 of its pressing part 4c and circle to contact.

Insulator 5 is for example made by polyimide resin material etc., has elasticity, roughly rounded sheet.This insulator 5 is placed on the first recess 1d and the step part 1e between the second recess 1c of first housing 1, and the upper surface obstruction of the first recess 1d is lived.

Flashing member 6 is made roughly rounded sheet by elastomeric material (for example, EPDM material) etc.The size of this flashing member 6 and insulator 5 big or small roughly the same, this flashing member 6 overlap insulator 5 above, be configured on the step part 1e of recess 1a of first housing 1.Therefore, under the state that the upper surface of the first recess 1d of negative area 1a is stopped up by flashing member 6 and insulator 5, this flashing member 6 and insulator 5 are configured in the second recess 1c.In this state, the upper surface of the small diameter portion 4a of first core bar 4 contacts with the lower surface of insulator 5.

Second housing 7 is processed into by the insulating synthetic resin material forming, and is roughly cylindrical; The upper wall 7b that it has columnar outer wall 7a and forms in the upper end of outer wall 7a.In addition, form the flange portion 7c of annular and the raised line 7d of annular in the lower end of outer wall 7a.The direction of this flange portion 7c is vertical with outer wall 7a, and this raised line 7d highlights downwards on the lower surface of this flange portion 7c.In addition, at the center of upper wall 7b, make circular hole 7e.

The flange portion 7c of this second housing 7 is configured in the second recess 1c of first housing 1, and the annular raised line 7d of flange portion 7c then embeds in the upper surface of flashing member 6.

Like this, the full periphery of the outer wall section 1b of first housing 1 is pressed on the flange portion 7c of second housing 7, makes its distortion, can form pressing section by this outer wall section 1b.Utilize this pressing section,, flashing member 6 and insulator 5 flexibly can be pressed on the step part 1e of first housing 1 by flange portion 7c.Therefore, first housing 1 and second housing 7 become one.

Second core bar 8 is processed into by the insulating synthetic resin material forming, and it has columniform button part 8a, is located at the round flange part 8b on the button part 8a lower end and is made in pressing part 8c on the flange portion 8b lower end.In addition, pressing part 8c has columniform projection 8d and for example is configured in four supporting part 8e on the neighboring part of projection 8d every 90 degree (cross).This second core bar 8 is placed in second housing 7, and its button part 8a inserts the hole 7e of logical second housing 7, highlights to the top of second housing 7.Flange portion 8b contacts with the lower surface of upper wall 7b, and the lower surface of the projection 8d of pressing part 8c contacts with the upper surface of flashing member 6.

The following describes the action of push-button switch of the present invention.

When the button part 8a with second core bar 8 of this push-button switch pushed downwards, the projection 8d of second core bar 8 pushed the approximate centre part of flashing member 6 and insulator 5 downwards.When insulator 5 was pushed downwards, first core bar 4 that contacts with insulator 5 was pressed towards the below.This push action makes the pressing part 4c of first core bar 4, and the vaulted moving contact 3 of circle is pushed downwards.In addition, when moving contact 3 was pressed, moving contact 3 bent downwards, and its back side contacts with two fixed contacts 2 respectively.Like this, moving contact 3 makes two fixed contact 2 conductings, and push-button switch becomes on-state.

When downwards pressing force of the button part 8a that removes second core bar 8, the counter motion restoring force of the moving contact 3 that circle is vaulted makes the pressing part 4c of first core bar 4, is pressed towards the top from this state.At this moment, moving contact 3 leaves two fixed contacts 2, and this push-button switch becomes off-state.After, carrying out aforementioned activities by opposite order, the button part 8a of second core bar 8 returns back to the origin-location.

Like this, by pushing moving contact 3, can connect trippingly to disconnect and move, and can carry out continuous action repeatedly by second core bar 8 and first core bar 4 etc.

Illustrate below second housing 7 is installed in manufacture method on first housing 1 of push-button switch of the present invention.

In push-button switch of the present invention, for being marked with identical symbol with aforementioned same structure, detailed description is omitted.

As shown in Figure 3, press device 20 has the maintenance transverse arm 21 that is roughly コ shape, is configured in two pins 22 on the front end that keeps transverse arm 21, is installed on each pin 22 rotatable roller 23 and the rotating shaft 24 that maintenance transverse arm 21 is rotated.In addition, relative with the lower end of this press device 20, dispose a supporting station 25.

At first, push-button switch is placed on the supporting station 25, fixes with suitable mode.Secondly, configuration press device 20 is depressed press device 20 from the top of push-button switch, the roller 23 of press device 20 is contacted with the outer wall section 1b of the annular of push-button switch.Compress the rotating shaft 24 of press device 20 again, make its rotation simultaneously, 23 upper surfaces that compress outer wall section 1b of roller, and rotate simultaneously.Therefore, be subjected to the roller 23 of the power effect of above-below direction and direction of rotation,, compress outer wall section 1b, simultaneously at leisure, compress, make outer wall section 1b distortion, form pressing section from the top in turn along the direct of travel of roller 23.

Like this, outer wall section 1b is not once that (moment ground) is crushed, but owing to give little power continuously, can in turn outer wall section 1b be crushed from the top, crushed outer wall section is covered on the upper surface of flange portion 7c of second housing 7, thereby second housing 7 is installed on first housing 1.This fitting operation embeds in the upper surface of flashing member 6 the raised line 7d of flange portion 7c more.

In aforementioned embodiments of the invention,, make insulator and flashing member flexibly be pressed on the step part by the flange portion of second housing; And be not limited thereto, also insulator can be set, only flashing member flexibly is pressed on the step part.

In addition, in the embodiment of the invention described above, on the lower surface of the flange portion of second housing, form the raised line of continuous annular; But be not to only limit to this, raised line also can have for example polygonal or cut-off parts (cutting at mid portion).

Again, in the embodiment of the invention described above, first, second housing is done circular, also can be not limited thereto, and it is also passable to make rectangle.

As mentioned above, push-button switch of the present invention, because be the full periphery of the outer wall section of first housing is out of shape on the flange portion of second housing, form pressing section, utilize this pressing section again, flange portion by second housing, flexibly be pressed on flashing member on the step part, like this, on the full periphery of second housing, outer wall section contacts equably with flange portion, therefore, on the full periphery of outer wall section, all can keep the reliable and stable state that is adjacent to, have the effect that the superior push-button switch of water resistance can be provided.

In addition, push-button switch of the present invention forms raised line on the lower surface of the flange portion of its second housing, because this raised line can compress flashing member, and this raised line can also embed in the flashing member, therefore, can provide waterproof effect more superior push-button switch.

Again owing on the lower surface of the flashing member of push-button switch of the present invention, disposed the insulator of sheet, by flashing member and insulator realize dual overlapping, can provide waterproof effect more superior push-button switch.

Claims

1. a push-button switch is characterized by, and has:

First housing, it has: outer wall section, be located at first recess and second recess of the step on the inner rim of this outer wall section and be located at step part between this first recess and second recess;

Be configured in the interior fixed contact of first recess of this first housing;

Be configured in the moving contact on this fixed contact top;

Operate first pressing member of this moving contact;

Stop up aforementioned first recess, be positioned at aforementioned second recess, be configured in the flashing member on the aforementioned step part of aforementioned first housing; With

Second housing with flange portion, this second housing makes outstanding and this second pressing member of receipts dress of second pressing member, so that can operate this second pressing member from the outside, this flange portion is contained in by receipts in second recess of first housing, clips aforementioned flashing member between this second housing and the aforementioned step part;

Wherein, make the full periphery of the aforementioned outer wall section of aforementioned first housing, distortion on the said flange part of aforementioned second housing, form pressing section, utilize this pressing section,, aforementioned flashing member flexibly is pressed on the aforementioned step part by the said flange part.

2. push-button switch as claimed in claim 1 is characterized by, and makes raised line on the said flange lower surface partly of aforementioned second housing, utilizes this raised line to compress aforementioned flashing member.

3. push-button switch as claimed in claim 1, it is characterized by, on the lower surface of aforementioned flashing member, be provided with the insulator of sheet, the aforementioned dielectric body is configured on the aforementioned step part, this insulator and flashing member, utilize aforementioned pressing section,, flexibly be pressed on the aforementioned step part by the said flange part.