CN1409338A - Press button type switch and its producing method - Google Patents
Press button type switch and its producing method Download PDFInfo
- Publication number
- CN1409338A CN1409338A CN 01134391 CN01134391A CN1409338A CN 1409338 A CN1409338 A CN 1409338A CN 01134391 CN01134391 CN 01134391 CN 01134391 A CN01134391 A CN 01134391A CN 1409338 A CN1409338 A CN 1409338A
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- Prior art keywords
- contact
- recess
- central portion
- terminal
- travelling contact
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- Manufacture Of Switches (AREA)
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Abstract
The invention provides a push-on switch capable of preventing inferior conduction between a ridge of a central part contact and the circumferential edge of a hole part of a movable contact. An acute angle between a virtual perpendicular L passing through a convergent point C of the ridge 3d of the central part contact 3 and perpendicularly extending to the bottom of a recess part of an insulating case body 1 and the ridge 3d is set to 83 degree-89 degree.
Description
Technical field
The present invention relates to a kind of key switch and manufacture method thereof.
Background technology
As key switch, have: insulation crust main body with recess; Be fixed on tabular central portion contact and end contact in this insulation crust main body; And have hole and its edge at central portion and contact with the end contact, and in order to make the travelling contact of the side-prominent and crooked action of reversing of the peristome one of central portion in being arranged on recess; The functional unit that contacts with the central portion contact with the periphery that makes travelling contact hole portion.But, in such key switch, exist the problem of on flat central portion contact, adhering to booty and dust etc. and causing loose contact between central portion contact and the travelling contact.Therefore, proposed to form and given prominence to, and its outside has 2 schemes to the multiaspect shape central authorities contact of the crest line of point convergence at least to the hole of travelling contact portion.In this scheme, be approximately 82 ° by the convergence point of 2 crest lines and to the imaginary vertical line and the acute angle angle between the crest line of extending perpendicular to the recess bottom surface.In this key switch, because at least 2 crest lines are contacted with the periphery of travelling contact hole portion, so even have between 1 crest line and the travelling contact and be mingled with booty, another root crest line also can be kept and the electrically contacting of travelling contact.Even and booty, the also advantage that can fall naturally arranged on crest line in addition.
But, even the loose contact between the periphery of the crest line of central portion contact and travelling contact hole portion also can appear in such key switch.
The object of the present invention is to provide a kind of key switch and manufacture method thereof, can prevent the loose contact between the periphery of the crest line of central portion contact and travelling contact hole portion.
Another object of the present invention is to provide a kind of key switch and manufacture method thereof, can prevent that the part that contacts with the travelling contact of functional unit from producing cutting.
Of the present invention also have a purpose to be to provide a kind of key switch and manufacture method thereof, can improve the portion of terminal weldability that is connected and protrudes in housing main body respectively with central contact with the end contact.
Summary of the invention
Key switch as improvement object of the present invention has: the insulation crust main body with recess; With the central portion contact and the end contact that are fixed in this housing main body recess; And have the hole at central portion and its edge is contacted with the end contact and by folding and unfolding in recess, and make the travelling contact of the side-prominent and crooked action of reversing of the peristome one of central portion in recess; With the functional unit that when operating, in recess, moves for the periphery that makes travelling contact hole portion contacts with the central portion contact.In addition, the central portion contact is outstanding to the hole of travelling contact portion, and its outside is the multiaspect shape that has at least 2 crest lines of point convergence.In the present invention, be set to 83 °～89 ° by the convergence point of at least 2 crest lines and to the imaginary vertical line and the acute angle angle between each crest line of extending perpendicular to the recess bottom surface.And preferably be set at 85 °～87 °.The present inventor draws according to various results of study, if such set angle scope just can prevent that the conduction between the periphery of the crest line of central portion contact and travelling contact hole portion is bad.This be because, if such set angle not only can increase the contact area of the periphery of the crest line of central portion contact and travelling contact hole portion than key switch in the past, and the error can reduce the shaping crest line time.
In other inventions of this patent, the part that will contact with the travelling contact of functional unit at least uses the coefficient of kinetic friction to copper to form at the resin material below 0.3.Usually, though under many circumstances the partial design that contacts with the travelling contact of functional unit for not contact with the periphery of travelling contact hole portion,, when key switch moves, functional unit can rock, and causes functional unit to contact with the periphery of travelling contact hole portion.At this moment, if with adopted in the past to the coefficient of kinetic friction of copper at 0.5 above resin material formation functional unit, functional unit will contact with the periphery of hole portion or central contact portion and produce cutting.As shown in the present,, just can prevent the cutting operation parts here, if the part that will contact with the travelling contact of functional unit at least uses the coefficient of kinetic friction to copper to form at the resin material below 0.3.Can use polyamide, Merlon, polyvinyl chloride or polypropylene to make as such resin material.Preferably use the coefficient of kinetic friction to copper at the polyamide below 0.2.
In this case, functional unit is integrally formed, the central authorities that are preferably in the travelling contact contact portion of functional unit form recess, and this recess has with shape bigger and surround peristome around the portion of hole with the travelling contact state of contact than hole portion, and to the direction extension that separates with travelling contact.Like this, not only can use a kind of material manufacturing operation parts simply, and can also prevent that effectively the part that contacts with the travelling contact of functional unit from contacting with the periphery of travelling contact hole portion by this simple structure of recess.
In addition, even will form with metal, also can prevent the cutting of functional unit with the part that the travelling contact at least of functional unit contacts.
For reducing the number of packages of parts, best central contact and end contact are integrally formed with the portion of terminal of giving prominence to from the insulation crust main body respectively, and constitute 2 kinds of terminal for connecting parts.At this moment, 2 kinds of terminal for connecting parts are constituted the insulation crust main body as inserts, and the method for the most handy metal plating covers to the integral body except the point of portion of terminal by inlaying shaping.Like this, because to the surface of 2 kinds of terminal for connecting parts, except the point of portion of terminal covers integral body with the external application metal plating, so can improve the weldability of portion of terminal.
The terminal for connecting parts for example can use brass, iron or bronze to form, and that metal plating can be used is silver-plated.Use silver-platedly, have the advantage that improves weldability and prevent to corrode.
Travelling contact can form by enough various electric conducting materials, and in order to improve counter-rotating action property, the most handy stainless steel forms.
In making key switch of the present invention, at first carry out the punch process of metallic plate, the 1st terminal for connecting parts that central portion contact and portion of terminal become one will be constituted, the part of the 2nd terminal for connecting parts that become one with 2 end contacts and portion of terminal is made with the annular metal frame that comprises many groups state.Then, to having the insulation crust main body of recess, as inserts, and central portion contact and 2 end contacts are exposed on the bottom surface of recess the part that comprises central portion contact and 2 end contacts of annular metal frame, inlay shaping with synthetic resin.Then, will middle body have the hole portion and make the peristome one of middle body in recess side-prominent and carried out crooked and travelling contact that can reverse action, its edge can be with the end contact contiguously by folding and unfolding in recess.Then, mobile functional unit the periphery of travelling contact hole portion is contacted with the central portion contact and in recess when operation, be arranged on travelling contact above make the assembly of switch.Then, cut off the ring-type metal frame, just finished key switch with the 1st and the 2nd terminal for connecting parts in suitable place.The manufacture method of present embodiment is that annular metal frame integral body is plated metal.In the past, owing on sheet of metallic material, implemented welding with after the metal plating, this sheet of metallic material is carried out punching press be made into the annular metal frame, on the section of punching press, do not implement metal plating, so, reduce the weldability of terminal for connecting parts on printed circuit board (PCB), can not fully obtain the effect of metal plating.And in the present invention, sheet of metallic material is carried out punching press produce and implemented metal plating after the annular metal frame, like this, annular metal frame integral body has been carried out metal plating.Therefore, on the section of punching press, also carry out metal plating, can prevent to reduce the effect of metal plating.
Description of drawings
Fig. 1 is the general profile chart of embodiment of the invention key switch.
Fig. 2 is the vertical view of seeing the insulation crust main body of key switch from recess peristome one side shown in Figure 1.
Fig. 3 is the vertical view of the part 2 of key switch central portion contact shown in Figure 1.
Fig. 4 is the enlarged drawing of the contact portions of key switch central portion contact shown in Figure 1 and travelling contact.
Among the figure: 1-housing main body, 1a-recess, 1j-bottom surface, 3-central portion contact, 3d-crest line, 5,7-end contact, 9-travelling contact, 9a-hole portion, 11-functional unit, 13A～13D-portion of terminal, L-imagination vertical line.
Embodiment
Below, with reference to accompanying drawing embodiments of the invention are elaborated.Fig. 1 is the general profile chart of embodiment of the invention key switch, and Fig. 2 is a vertical view of seeing the insulation crust main body of key switch from recess peristome one side shown in Figure 1.Shown in each figure, the key switch of present embodiment has insulation crust main body 1 and central portion contact 3 and pair of end portions contact 5,7 and travelling contact 9 and functional unit 11.Insulation crust main body 1, its profile is the quadrangular prism shape, and its inside is formed with the cylindrical recess 1a of opening upward.The inner face of recess 1a has the smooth facial 1b～1e and the curved face part 1f～1i that is connected with these smooth facial 1b～1e with tabular surface of giving prominence to the four directions that separate at interval with 90 degree respectively.These curved face part 1f～1i forms the part of same radius cylindrical surface respectively.
To the side-prominent part of the bottom surface 1j one of pair of end portions contact 5,7 recess 1a, constitute by base portion 5a, the 7a of the rectangular shape of profile and the 5b of contact portion, the 7b that give prominence in the so-called half-conical shape of these base portion central authorities.Base portion 5a, 7a as shown in Figure 2, have the length dimension length about equally with smooth facial 1c, the 1e of insulation crust main body 1, and the end of a smooth facial side have the width dimensions that is embedded in the insulation crust main body 1.
The part 2 3b of central portion contact 3, the polygon such as rounded or quadrangle in bottom surface 1j one side, its central portion has the outstanding shape to the hole of the travelling contact 9 described later 9a of.As shown in Figure 3, the external shape of part 2 3b has 3 regular polygon shapes that fan-shaped unit plane 3c combines that will have same shape.Like this, 3 stupefied line 3d have been formed in the portion of mutually combining of the constituent parts face 3c of part 2 3b outside to the point convergence.As shown in Figure 4, by the intersection point of these 3 stupefied line 3d, i.e. convergence point C, and, be positioned at center position by the 9a of hole portion of travelling contact 9 perpendicular to the bottom surface 1j of recess 1a and the imaginary vertical line L that extends.In addition, the angle θ of each acute angle is set to 86 ° between imaginary vertical line L and stupefied line 3d.Can in 83 °～89 ° scope, suitably set this angle θ.And, preferably be set in 85 °～87 °.If set this angle like this, it is bad to prevent to produce conduction between the stupefied line of central portion contact and the travelling contact hole portion periphery.
Travelling contact 9 has the shape of action of can reversing that is formed by resilient stainless steel, and is and makes middle body to the side-prominent forniciform circular plate type of the peristome one of recess 1a.The circular edge of travelling contact 9 contacts with 4 curved face part 1f～1i of formation recess 1a inner peripheral surface shown in Figure 2, simultaneously for usually with the 5b of contact portion of end contact 5,7,7b contacts and by folding and unfolding in recess 1a.Being formed with peripheral shape at the central portion of travelling contact 9 is the slightly rounded 9a of hole portion.
At the peristome of insulation crust main body 1, have for stopping up fixing that this peristome one side end face is provided with plate 15.Be formed with the floating manhole 15a that is embedded in wherein of the operating portion 11c that makes functional unit 11 at this fixing central portion with plate 15.Fixing with plate 15, fixing on four jiaos of being located at insulation crust main body 1 above shown in Figure 2 is inserted in projection 17 and fixes use not shown installing hole set on the correspondence position of plate 15 after, welding projection 17 is fixed.In addition, also can projection 17 generation mechanical deformations be fixed by pressing down.
The key switch of present embodiment, when when travelling contact 9 one sides are pressed the operating portion 11c of functional unit 11, pressing down section 11a presses down in recess 1a and moves and make travelling contact 9 counter-rotatings.Like this, the periphery of the 9a of hole portion of travelling contact 9 contacts with 3 stupefied line 3d of central portion contact 3, makes central portion contact 3 and 5,7 conductings of end contact.When the operating portion 11c from functional unit 11 took away finger, pressing down section 11a to moving with aforesaid opposite direction, made travelling contact 9 counter-rotatings and returns general shape in recess 1a.Like this, the periphery of the 9a of hole portion of travelling contact 9 separates with 3 stupefied line 3d of central portion contact 3, removes the conducting of central portion contact 3 and end contact 5,7.
The key switch of present embodiment process described as follows is made.At first, carry out the punch process of metallic plate, the 1st terminal for connecting parts that central portion contact 3 and portion of terminal 13A, 13B become one will be constituted, the part of the 2nd terminal for connecting parts that become one with 2 end contacts 5,7 and portion of terminal 13C, 13D is made with the annular metal frame that comprises many groups state.Then, the annular metal frame is carried out integral body silver-plated after, the part that comprises central portion contact 3 and 2 end contacts 5,7 on the annular metal frame as inserts, and central portion contact 3 and 2 end contacts 5,7 are exposed on the 1j of the bottom surface of recess 1a, inlay shaping with the synthetic resin material, form insulation crust main body 1.Then, the travelling contact 9 of the action of reversing, make its edge and end contact 5,7 contiguously folding and unfolding in recess 1a, at this moment, make the peristome one of its middle body in the recess 1a that has the 9a of hole portion at central portion side-prominent and carry out bending.Then, after being arranged on the travelling contact 9, fixed head 15 is set to functional unit 11.And, make the switch assembly with plate 15 with fixing fixing with projection 17.Then, cut off the ring-type metal frame, just finished key switch with the 1st and the 2nd terminal for connecting parts in suitable place.In the manufacturing of present embodiment,,, can prevent to reduce the effect of metal plating so on the section of punching press, also carried out the metal plating processing owing to implemented the metal plating processing after producing the annular metal frame sheet of metallic material being carried out punching press.
According to the present invention, owing to pass through the convergence point of 2 crest lines at least, will be perpendicular to the acute angle angle initialization between the prolongation of recess bottom surface imagination vertical line and each crest line at 83 °～89 °, so, can prevent that the conduction between the edge of the crest line of central portion contact and travelling contact is bad.
Claims (12)
1. key switch has:
Insulation crust main body with recess; With
Be fixed on the interior central portion contact and the end contact of described recess of this housing main body; With
Central portion have hole portion and its edge and end contact can be contiguously by folding and unfolding in described recess, and in order to make peristome one travelling contact side-prominent and crooked and that can reverse action of central portion in described recess; With
When operation contact with described central portion contact for the periphery of the described hole portion that makes described travelling contact and in described recess mobile functional unit;
Described central portion contact is outstanding to the described hole of described travelling contact portion, and its outside is the multiaspect shape with at least 2 crest lines to the point convergence, it is characterized in that,
By the convergence point of described at least 2 crest lines and the imaginary vertical line and each acute angle angle between described crest line of extending perpendicular to described recess bottom surface is 83 °～89 °.
2. key switch according to claim 1 is characterized in that, described acute angle angle is 85 °～87 °.
3. key switch has:
Insulation crust main body with recess; With
Be fixed on the interior central portion contact and the end contact of described recess of this housing main body; With
Central portion have hole portion and edge and end contact contiguously by folding and unfolding in described recess, and in order to make the peristome one of central portion in described recess travelling contact side-prominent and crooked and that can reverse action; With
When operation contact with described central portion contact for the periphery of the described hole portion that makes described travelling contact and in described recess mobile functional unit;
Described central portion contact is outstanding to the described hole of described travelling contact portion, and its outside is the multiaspect shape with at least 2 crest lines to the point convergence, it is characterized in that,
At least the part that contacts with described travelling contact of described functional unit is that resin material below 0.3 forms by the coefficient of kinetic friction to copper.
4. key switch according to claim 3 is characterized in that, as described resin material, can use polyamide, Merlon, polyvinyl chloride or polypropylene.
5. key switch according to claim 4 is characterized in that, the part that contacts with described travelling contact at least of described functional unit, use be that the coefficient of kinetic friction to copper is the polyamide below 0.2.
6. key switch according to claim 3, it is characterized in that, described functional unit is integrally formed, central authorities in the part that contacts with described travelling contact of described functional unit, have than described hole portion shape big and with described travelling contact state of contact the time, be trapped among peristome around the portion of described hole, and be formed with to leaving the recess that described travelling contact direction is extended.
7. key switch has:
Insulation crust main body with recess; With
Be fixed on the interior central portion contact and the end contact of described recess of this housing main body; With
Central portion have hole portion and edge and end contact contiguously by folding and unfolding in described recess, and in order to make the peristome one of central portion in described recess travelling contact side-prominent and crooked and that can reverse action; With
When operation contact with described central portion contact for the periphery of the described hole portion that makes described travelling contact and in described recess mobile functional unit;
Described central portion contact is outstanding to the described hole of described travelling contact portion, and its outside is the multiaspect shape with at least 2 crest lines to the point convergence, it is characterized in that,
At least the part that contacts with described travelling contact of described functional unit is formed by metal.
8. according to claim 3 or 7 described key switchs, it is characterized in that, is 83 °～89 ° by the convergence point of described at least 2 crest lines and the imaginary vertical line and each acute angle angle between described crest line of extending perpendicular to described recess bottom surface.
9. according to claim 1,3 or 7 described key switchs, it is characterized in that described central contact and described end contact are integrally formed with the portion of terminal of giving prominence to from described insulation crust main body, and constitute 2 kinds of terminal for connecting parts respectively,
Described insulation crust main body as inserts, forms described 2 kinds of terminal for connecting parts with inlaying,
The surface of described 2 kinds of terminal for connecting parts except that the leading section of portion of terminal, covers with plated metal integral body.
10. key switch according to claim 9 is characterized in that, described 2 kinds of terminal for connecting parts are formed by brass, iron or phosphor bronze, and described plated metal is silver-plated.
11., it is characterized in that described travelling contact forms with stainless steel according to claim 1,3 or 7 described key switchs.
12. the manufacture method of a key switch,
Carry out the punch process of metallic plate, the 1st terminal for connecting parts that central portion contact and portion of terminal become one will be constituted, the part of the 2nd terminal for connecting parts that become one with 2 end contacts and portion of terminal is made with the annular metal frame that comprises many groups state;
To having the insulation crust main body of recess, with comprising of described annular metal frame described central portion contact and described 2 end contacts part as inserts, and described central portion contact and described 2 end contacts are exposed on the bottom surface of recess, inlay shaping with synthetic resin;
To have hole portion at middle body, and make the peristome one of described middle body in described recess side-prominent and carried out crooked and travelling contact that can reverse action, its edge can be with described end contact contiguously by folding and unfolding in described recess;
Mobile functional unit the periphery of described travelling contact hole portion is contacted with described central portion contact and in described recess when operation, be arranged on described travelling contact above make the assembly of switch;
Then, cut off described annular metal frame, just finished and have the described the 1st and the key switch of the 2nd terminal for connecting parts in suitable place;
It is characterized in that,
To the metal plating of described annular metal frame whole implementation.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001302685A JP5269277B2 (en) | 2001-09-28 | 2001-09-28 | Push-on switch |
| JP302685/2001 | 2001-09-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1409338A true CN1409338A (en) | 2003-04-09 |
| CN1243361C CN1243361C (en) | 2006-02-22 |
Family
ID=19122884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01134391 Expired - Fee Related CN1243361C (en) | 2001-09-28 | 2001-11-02 | Press button type switch and its producing method |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5269277B2 (en) |
| CN (1) | CN1243361C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4702780B2 (en) * | 2005-07-01 | 2011-06-15 | 芦森工業株式会社 | Airbag device with horn switch |
| CN102760601B (en) * | 2012-06-29 | 2015-07-29 | 惠州Tcl移动通信有限公司 | A kind of button and electronic equipment |
| KR101988842B1 (en) * | 2018-10-23 | 2019-06-12 | 최창형 | Injection press complex molding apparatus |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5849545Y2 (en) * | 1979-10-19 | 1983-11-11 | 松下電器産業株式会社 | push-on switch |
| JPH0338744Y2 (en) * | 1986-04-25 | 1991-08-15 | ||
| JPH0992070A (en) * | 1995-09-27 | 1997-04-04 | Hokuriku Electric Ind Co Ltd | Manufacture of push switch |
| JP2001135191A (en) * | 1999-11-10 | 2001-05-18 | Matsushita Electric Ind Co Ltd | Push switch and its production |
| JP2001155591A (en) * | 1999-11-26 | 2001-06-08 | Kyocera Corp | Mobile phone |
| JP2001216865A (en) * | 2000-02-04 | 2001-08-10 | Fuji Denshi Kogyo Kk | Switch |
-
2001
- 2001-09-28 JP JP2001302685A patent/JP5269277B2/en not_active Expired - Fee Related
- 2001-11-02 CN CN 01134391 patent/CN1243361C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2003109456A (en) | 2003-04-11 |
| CN1243361C (en) | 2006-02-22 |
| JP5269277B2 (en) | 2013-08-21 |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060222 Termination date: 20201102 |