EP1473747A1 - Rotary electric component - Google Patents
Rotary electric component Download PDFInfo
- Publication number
- EP1473747A1 EP1473747A1 EP04009958A EP04009958A EP1473747A1 EP 1473747 A1 EP1473747 A1 EP 1473747A1 EP 04009958 A EP04009958 A EP 04009958A EP 04009958 A EP04009958 A EP 04009958A EP 1473747 A1 EP1473747 A1 EP 1473747A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- housing
- folded
- base
- brush
- electric component
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000004308 accommodation Effects 0.000 claims abstract description 25
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 238000000465 moulding Methods 0.000 description 13
- 239000011347 resin Substances 0.000 description 8
- 229920005989 resin Polymers 0.000 description 8
- 239000000463 material Substances 0.000 description 6
- 238000005476 soldering Methods 0.000 description 5
- 229910000679 solder Inorganic materials 0.000 description 4
- 239000011810 insulating material Substances 0.000 description 3
- 239000000057 synthetic resin Substances 0.000 description 3
- 229920003002 synthetic resin Polymers 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
- H01H19/54—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand the operating part having at least five or an unspecified number of operative positions
- H01H19/56—Angularly-movable actuating part carrying contacts, e.g. drum switch
- H01H19/58—Angularly-movable actuating part carrying contacts, e.g. drum switch having only axial contact pressure, e.g. disc switch, wafer switch
- H01H19/585—Angularly-movable actuating part carrying contacts, e.g. drum switch having only axial contact pressure, e.g. disc switch, wafer switch provided with printed circuit contacts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
- H01H11/0056—Apparatus or processes specially adapted for the manufacture of electric switches comprising a successive blank-stamping, insert-moulding and severing operation
Abstract
Description
- The present invention relates to a rotary electric component, and, more particularly, to a structure of an output section and that of a contact used in, for example, a variable resistor, an encoder, or a switch.
- A related rotary electric component formed by insert molding is known. The insert molding is carried out using a die that comes into contact with a metal plate forming, for example, a terminal disposed below a covered contact of, for example, a bent brush (slider). (Refer to, for example, Japanese Unexamined Patent Application Publication No. 8-39603.)
- Hereunder, the structure of a related rotary electric component will be described with reference to the relevant drawings.
- Fig. 10 is a perspective view of the structure of a housing of the related rotary electric component. Fig. 11 is a perspective view of the main portion of the housing where one of the brushes is formed.
- In Fig. 10,
reference numerals 32 denote springy brushes,reference numerals 33 denote terminals disposed below and electrically connected to therespective brushes 32, andreference numeral 25 denotes the housing where thebrushes 32 and theterminals 33 are insert-molded. - One of the brushes insert-molded in the housing will be described with reference to Fig. 11. The
brush 32 and theterminal 33 are formed of the same materials, such as metallic plates. Thebrush 32 is integrally formed at a base of theterminal 33 by forming a foldedmember 30. The housing 25 (which is a molded product) is formed by insert molding the integrally formedbrush 32 and theterminal 33. - In this case, the
housing 25 is formed by injecting resin into a die. The die has a cavity for preventing thebrush 32 from contacting it. Since an open side of the cavity is covered by the base of theterminal 33, the resin is prevented from flowing into the cavity. - However, since, in the related rotary electric component, the
housing 25 is formed by insert molding theterminals 33 and thebrushes 32 integrally formed at the bases of theterminals 33 by forming the foldedmembers 30 and formed of the same material as theterminals 33, variations tend to occur in the folded portions. Therefore, variation occurs in the dimensions of contacts of thebrushes 32, resulting in the problem that the locations of the contact portions between thebrushes 32 and electrically conductive patterns including, for example, resistors cannot be set with high precision. Consequently, in particular, in a sensor requiring high precision, variation in the contact locations is a serious problem. - Accordingly, it is an object of the present invention to provide a high-precision rotary electric component which makes it possible to set the locations of brushes with high precision and which can be used in a sensor.
- To this end, according to the present invention, there is provided a rotary electric component comprising a housing having an accommodation portion; a terminal plate having a base, a brush, and a wide folded member; and a rotary member accommodated at the accommodation portion and having an electrically conductive pattern on which the brush slides. In the rotary electrical component, the base is buried in the bottom of the housing. The brush is raised from the base in the accommodation portion. The folded member is folded from the base, is in close contact with the bottom of the base at a location other than the location from where the brush is raised from the base, and is disposed under the base. The terminal plate is contained in the housing such that the brush is disposed above the folded member.
- Accordingly, the brush is raised from the base of the terminal plate, and the folded member is disposed under the base so as to oppose a side of the base where the brush is raised. Therefore, it is possible to provide a high-precision rotary electric component in which the location from where the brush is raised is not affected even if a variation occurs in the folded portion.
- In a first form, the entire outer peripheral edge of the folded member of the terminal plate is buried in the housing, and a surface of the folded member facing the side where the brush is raised is exposed from the housing.
- Accordingly, the burying portion covers the entire periphery of the brush raised upward from the base of the terminal plate. Therefore, the brush is reliably protected.
- In a second form, the terminal plate further has a slit at a folded portion between the folded member and the base.
- Accordingly, the folded member is easily formed along the slit. Therefore, the folded member is reliably disposed below the base, thereby preventing resin from flowing in during insert molding.
- In a third form, a folded portion between the folded member and the base of the terminal plate extends in a direction of the brush.
- Accordingly, the layout of the terminal plate is simplified, and material yield is good, so that costs are reduced.
- In a fourth form, the accommodation portion of the housing has a bearing holding the rotary member.
- Accordingly, the electrical conductive pattern on the rotary member and the brush are easily positioned with high precision.
- In a fifth form based on the fourth form, a plurality of the brushes are provided at opposing sides around the bearing of the accommodation portion, and a plurality of the folded portions are separately disposed below the respective brushes.
- Accordingly, the brushes are scattered, thereby reducing radial size. In addition, since the folded members are individually disposed, the folded members are reduced in size, so that material yield of the terminal plate is good. Consequently, costs are reduced.
- In a sixth form based on the fifth form, a plurality of the terminal plates are provided. The terminal plates have external connection terminals electrically connecting with the respective brushes. The external connection terminals protrude outward from different outer surfaces of the housing.
- Accordingly, the electric component is easily mounted to, for example, a printed circuit board. Therefore, a predetermined output signal is easily produced.
-
- Fig. 1 is a perspective view of a rotary electric component of the present invention;
- Fig. 2 is an exploded perspective view of the rotary electric component of the present invention;
- Fig. 3 is a side sectional view taken along line III-III of Fig. 1 of the present invention;
- Fig. 4 is a side sectional view taken along line IV-IV of Fig. 1 of the present invention;
- Fig. 5 is a plan view of a housing in the present invention;
- Fig. 6 is a perspective view of terminal plates prior to molding the rotary electric component of the present invention;
- Fig. 7 is a perspective view of the main portion of one of the terminal plates prior to bending a portion of the terminal plate in the present invention;
- Fig. 8 is a perspective view of the main portion of the terminal plate after bending the portion of the terminal plate in the present invention;
- Fig. 9 is a perspective view of the main portion of terminal plate in the present invention after insert molding;
- Fig. 10 is a perspective view of the structure of a housing of a related rotary electric component; and
- Fig. 11 is a perspective view of the main portion of the housing where a brush is formed.
-
- Hereunder, a rotary electric component of an embodiment of the present invention will be described with reference to Figs. 1 to 9.
- Referring to Figs. 1 to 5, a
housing 1 is formed of an insulating material (such as synthetic resin), and is rectangular in shape. Thehousing 1 has a cavity with an open top, and anaccommodation portion 1a forming a bottom in the cavity. Abearing 1b comprising a circular through hole is formed in the center of theaccommodation portion 1a, and supports asupport shaft 3c of a rotary member 3 (described later). Hook-shaped engagingprotrusions 1c are formed on respective outer sides of a pair of opposing side surfaces of thehousing 1. Thehousing 1 and acover 5 are integrally formed by engagement of the engagingprotrusions 1c andrespective engagers 5c of thecover 5. - A plurality of terminal plates 2 (four in the embodiment) formed of electrically conductive metallic plates are buried in and at the bottom of the
accommodation portion 1a of thehousing 1. Eachterminal plate 2 has aflat base 2a, abrush 2b, and a foldedmember 2c. Eachbrush 2b is raised from itscorresponding base 2a in theaccommodation portion 1a while retaining its elasticity. Each foldedmember 2c is disposed below the location where itscorresponding brush 2b is raised and is wider than itscorresponding brush 2b. Each foldedmember 2c is buried in thehousing 1 along with itscorresponding base 2a as a result of being disposed below itscorresponding base 2a so as to oppose the side where itscorresponding brush 2b is raised. - The four
brushes 2b are disposed so that contact portions between therespective brushes 2b and a rotary board 4 (described later) are disposed at opposing areas with thebearing 1b of theaccommodation portion 1a being disposed therebetween and at equal intervals (90 degrees from each other) with respect to the center of thebearing 1b. The foldedmembers 2c are separately disposed below therespective brushes 2b. - Accordingly, since four
brushes 2b are disposed at opposing sides with thebearing 1b of theaccommodation portion 1a of thehousing 1 being disposed therebetween, and the separate foldedmembers 2c are disposed below therespective brushes 2b, thebrushes 2b are scattered around a periphery of thebearing 1b, so that the radial size of the rotary electric component is reduced. In addition, since the foldedmembers 2c are separately disposed, the foldedmembers 2c are reduced in size, resulting in good material yield of theterminal plates 2. - An
external connection terminal 2d electrically connected to itscorresponding brush 2b extends from thebase 2a of the correspondingterminal plate 2. Theexternal connection terminals 2d protrude outward from four different outer surfaces of thehousing 1. When theexternal connection terminals 2d are to be mounted to a printed circuit board of, for example, an electrical device (not shown), they have shapes that allow surface mounting by soldering. Theexternal connection terminals 2d includerespective ribs 2e extending upward at the centers, and are U-shaped in cross section. - Accordingly, when the
external connection terminals 2d having U shapes and including therespective ribs 2e are soldered to the printed circuit board, solder flows into grooves of theribs 2e. Therefore, the soldering surface area is increased in correspondence with the grooves of theribs 2e, so that solder fillet heights at the grooves of theribs 2e are increased by the principle of capillary phenomena, thereby increasing soldering strength. In addition, since theexternal connection terminals 2d have U shapes in cross section, the solder adheres to both sides of the U shapes and forms solder fillets. Therefore, the soldering strength is increased. Further, since theribs 2e are disposed, the terminal strengths are increased. Still further, since theexternal connection terminals 2d are U-shaped in cross section, stress to the soldering portions is reduced. - Since, the
external connection terminals 2d which are brought into electrical conduction with therespective brushes 2b and which protrude outward from different outer surfaces of thehousing 1 are integrated to portions of therespective terminal plates 2, the electric component is easily mounted to a printed circuit'board or the like, and, thus, a predetermined output signal is easily produced. - The
rotary member 3 is formed of insulating material such as synthetic resin, and has a flat disc-shapedportion 3a, and asupport shaft 3b and thesupport shaft 3c protruding vertically from the disc-shapedportion 3a. A substantially elliptical throughhole 3d is formed in the center of thesupport shafts elliptical shank 3e is disposed at the top portion of thesupport shaft 3c. A plurality ofprotrusions 3f for positioning the rotary board 4 (described later) are disposed at the lower surface of the disc-shapedportion 3a. Thesupport shaft 3c is inserted in thebearing 1b of theaccommodation portion 1a of thehousing 1 and thesupport shaft 3b is inserted in a throughhole 5b of the cover 5 (described later), so that therotary member 3 is supported. - The
rotary board 4 is disk-shaped, is formed of a laminated plate (formed of, for example, phenol resin), and engages thesupport shaft 3c of therotary member 3. A substantially ellipticalfitting hole 4a is formed in the center of therotary board 4. Thefitting hole 4a is fitted to the thick substantiallyelliptical shank 3e at thesupport shaft 3c, so that therotary board 4 corotatably engages therotary member 3. - A plurality of electrically conductive patterns (not shown) comprising carbon resistors and silver leads are formed on the lower surface of the
rotary board 4. When therotary member 3 is rotated, the electrically conductive patterns come into sliding contact with thebrushes 2b in theaccommodation portion 1a of thehousing 1 to output predetermined electrical signals. A rotary unit comprises therotary member 3 and therotary board 4. - As described above, since the
bearing 1b holding thesupport shaft 3c of therotary member 3 is formed in theaccommodation portion 1a of thehousing 1, thebrushes 2b and the electrically conductive patterns (not shown) on therotary board 4 corotatably engaging therotary member 3 are easily positioned with high precision, so that predetermined electrical signals are reliably produced. - The
cover 5 is substantially flat and is formed of insulating material, such as synthetic resin, or a metallic plate. Thecover 5 comprises anupper plate 5a and theengagers 5c. Theupper plate 5a is substantially rectangular and has the circular throughhole 5b in the center thereof. Theengagers 5c extend downward from respective opposing sides of theupper plate 5a. Thesupport shaft 3b of therotary member 3 is supported at the throughhole 5b, and theengagers 5c engage the hook-shaped engagingprotrusions 1c at the respective outer surfaces of thehousing 1, so that thehousing 1 and thecover 5 are integrated. - Next, the step of insert molding and burying the
terminal plates 2 in thehousing 1 will be described with reference to Figs. 6 to 9. - Fig. 6 shows the hoop-shaped state of each
terminal plate 2 prior to'insert molding in thehousing 1. In 'this state, theterminal plates 2 are connected and integrated toribs 2g having outer peripheral portions forming an overall annular shape by ends of theexternal connection terminal 2d, extending from thecorresponding base 2a, andlinks 2f, extending from the correspondingexternal connection terminal 2d. In eachterminal plate 2, thebrush 2b is raised from thecorresponding base 2a, the foldedmember 2c is disposed below itscorresponding base 2a, and therib 2e is formed at its correspondingexternal connection terminal 2d. - In this case, the
terminal plates 2 are first formed of one flat metallic plate. Portions of the metallic plate are punched out by, for example, a pressing operation, and each punched portion is raised. As a result, as shown in Fig. 7, theflat bases 2a, thebrushes 2b, and portions to become the foldedportions 2c are formed. Thebrushes 2b are raised from therespective bases 2a in theaccommodation portion 1a while retaining their elasticity. The portions to become the foldedmembers 2c are disposed continuously with therespective bases 2a at locations other than the locations where thebrushes 2b are raised.Long slits 2h are formed at folded portions between thewide portions 2c and thebases 2a of therespective terminal plates 2. The folded portions where theslits 2h are formed are extend in the direction of thebrushes 2b of theterminal plates 2. - As shown in Fig. 8, the folded
members 2c are formed along the folded portions where theslits 2h are formed, below thebrushes 2b, and at sides of therespective bases 2a opposing the sides where thebrushes 2b are raised; and are disposed below thebases 2a. At the same time, connected adjacentterminal plates 2 are cut intoseparate terminal plates 2. At this time, theterminal plates 2 are connected theannular ribs 2g by theexternal connection terminals 2d and the correspondinglinks 2f (see Fig. 6). - From this state, the hoop-shaped
terminal plates 2 are mounted to a die (not shown) and subjected to insert molding. By this, as shown in Fig. 9, the outer peripheries of thebases 2a and the foldedmembers 2c (not thebrushes 2b) are buried in resin in order to form thehousing 1. In this case, the entire outer peripheral edges of the foldedmembers 2c of theterminal plates 2 are buried in thehousing 1, and the surfaces of the foldedmembers 2c facing the sides where thebrushes 2b are raised are exposed from thehousing 1. - Accordingly, since the folded
members 2c are easily formed along theslits 2h that are formed at the folded portions between the foldedmembers 2c and thebases 2a of theterminal plates 2, thebases 2a are reliably disposed above the foldedmembers 2c as a result of bringing them into close contact with each other. Therefore, the flow of resin towards thebrushes 2b is prevented from occurring during the insert molding. - Since the folded portions between the folded
members 2c and thebases 2a of therespective plates 2 extend in the direction of thebrushes 2b, the layout of theterminal plates 2 is simplified, and material yield is good, thereby reducing costs. - Next, from this state, the
annular ribs 2g remaining at the outer peripheral portion of thehousing 1 are cut and removed from the respectiveexternal connection terminals 2d and thelinks 2f, and theexternal connection terminals 2d are bent into U shapes as shown in Figs. 1 and 2 to form terminal shapes for surface mounting. These operations complete the production of thehousing 1. - In the step of insert molding and burying the
terminal plates 2 into thehousing 1, theterminals 2 are mounted to a die (not shown), and resin is injected into the die to form thehousing 1. The die has cavities (not shown) for entirely disposing thebrushes 2b so that thebrushes 2b raised from therespective bases 2a of theterminal plates 2 do not contact the die. Since the edges defining open sides of the cavities are covered by the foldedmembers 2c, resin is prevented from flowing into the cavities. - In the above-described embodiment of the present invention, the rotary electric component comprises
terminal plates 2 havingbases 2a and brushes 2b. Thebases 2a are buried in and at the bottom of thehousing 1. Thebrushes 2b are raised from therespective bases 2a and protrude in theaccommodation portion 1a. Theterminal plates 2 also have foldedmembers 2c having wider widths and formed continuously with thebases 2a at locations other than the locations where thebrushes 2b are raised. The foldedmembers 2c are formed below thebases 2a so as to oppose the sides where therespective brushes 2b are raised. With thebrushes 2b being disposed above the respective foldedmembers 2c, theterminal plates 2 are buried inthe'housing 1. Accordingly, thebrushes 2b are raised from therespective bases 2a. Since the foldedmembers 2c are formed, even if variations occur in the folded portions, the locations where thebrushes 2b are raised are not affected. As a result, a high-precision rotary electric component is produced. - Since the entire outer peripheral edges of the folded
members 2c of theterminal plates 2 are buried in the housing, and the surfaces of the folded members facing the sides where thebrushes 2b are raised are exposed from the housing, the entire peripheries of thebrushes 2b raised upward from thebases 2a of therespective terminal plates 2 are covered by the burying portions. Therefore, during the insert molding of thehousing 1, resin is prevented from flowing towards thebrushes 2b by the respective foldedmembers 2c, so that thebrushes 2b are reliably protected. - Although, in the embodiment, the
housing 1 is described as comprising one portion, the present invention is not limited thereto. For example, the housing may comprise a combination of portions, such as a plate in which in eachbase 2a is buried and a frame having theaccommodation portion 1a.
Claims (7)
- A rotary electric component comprising:a housing having an accommodation portion;a terminal plate having a base, a brush, and a wide folded member; anda rotary member accommodated at the accommodation portion and having an electrically conductive pattern on which the brush slides, whereinthe base is buried in the bottom of the housing,the brush is raised from the base in the accommodation portion,the folded member is folded from the base, is in close contact with the base at a location other than the location from where the brush is raised from the base, and is disposed under the base, andthe terminal plate is contained in the housing such that the brush is disposed above the folded member.
- A rotary electric component according to Claim 1, wherein the entire outer peripheral edge of the folded member of the terminal plate is buried in the housing, and a surface of the folded member facing the side where the brush is raised is exposed from the housing.
- A rotary electric component according to Claim 1 or 2, wherein the terminal plate further has a slit at a folded portion between the folded member and the base.
- A rotary electric component according to any of Claims 1 to 3, wherein a folded portion between the folded member and the base of the terminal plate extends in a direction of the brush.
- A rotary electric component according to any of Claims 1 to 4, wherein the accommodation portion of the housing has a bearing holding the rotary member.
- A rotary electric component according to Claim 5, wherein a plurality of the brushes are provided at opposing sides around the bearing of the accommodation portion, and a plurality of the folded portions are separately disposed below the respective brushes.
- A rotary electric component according to Claim 6, wherein a plurality of the terminal plates are provided, the terminal plates having external connection terminals electrically connecting with the respective brushes, the external connection terminals protruding outward from different outer surfaces of the housing.
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003123831 | 2003-04-28 | ||
JP2003123831 | 2003-04-28 | ||
JP2004019834A JP2004349679A (en) | 2003-04-28 | 2004-01-28 | Rotary electrical component |
JP2004019834 | 2004-01-28 | ||
JP2004036075A JP4323342B2 (en) | 2004-02-13 | 2004-02-13 | Rotating electrical parts |
JP2004036075 | 2004-02-13 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1473747A1 true EP1473747A1 (en) | 2004-11-03 |
EP1473747B1 EP1473747B1 (en) | 2007-06-13 |
Family
ID=32995636
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20040009958 Expired - Lifetime EP1473747B1 (en) | 2003-04-28 | 2004-04-27 | Rotary electric component |
EP20040009957 Expired - Lifetime EP1473746B1 (en) | 2003-04-28 | 2004-04-27 | Rotary electric component |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20040009957 Expired - Lifetime EP1473746B1 (en) | 2003-04-28 | 2004-04-27 | Rotary electric component |
Country Status (3)
Country | Link |
---|---|
EP (2) | EP1473747B1 (en) |
DE (2) | DE602004006916T2 (en) |
ES (2) | ES2312875T3 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102157291B (en) * | 2010-12-24 | 2013-09-11 | 华为机器有限公司 | Switch connector |
CN102820159B (en) * | 2012-09-11 | 2015-05-20 | 东莞市林积为实业投资有限公司 | Encoder base and encoder using same |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4879803A (en) * | 1987-08-14 | 1989-11-14 | Asmo Co., Ltd. | Method for mounting a plurality of brushes |
US5027021A (en) * | 1987-08-14 | 1991-06-25 | Asmo Co., Ltd. | Electric actuator switch with multiple brushes |
US5719434A (en) * | 1993-08-09 | 1998-02-17 | General Automotive Specialty Co., Inc. | Rotary switch |
EP0938112A2 (en) * | 1998-02-24 | 1999-08-25 | Kabushiki Kaisha Honda Lock | Rotary switch device |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE9011795U1 (en) * | 1989-09-21 | 1990-11-29 | A.B. Elektronik Gmbh, 4712 Werne, De | |
JPH0643979U (en) * | 1992-11-17 | 1994-06-10 | エスエムケイ株式会社 | Rotary encoder |
JP3956554B2 (en) * | 1999-11-19 | 2007-08-08 | 松下電器産業株式会社 | Rotary encoder and composite operation type electronic component using the same |
-
2004
- 2004-04-27 EP EP20040009958 patent/EP1473747B1/en not_active Expired - Lifetime
- 2004-04-27 DE DE602004006916T patent/DE602004006916T2/en not_active Expired - Lifetime
- 2004-04-27 DE DE602004002799T patent/DE602004002799T2/en not_active Expired - Lifetime
- 2004-04-27 EP EP20040009957 patent/EP1473746B1/en not_active Expired - Lifetime
- 2004-04-27 ES ES04009958T patent/ES2312875T3/en not_active Expired - Lifetime
- 2004-04-27 ES ES04009957T patent/ES2274339T3/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4879803A (en) * | 1987-08-14 | 1989-11-14 | Asmo Co., Ltd. | Method for mounting a plurality of brushes |
US5027021A (en) * | 1987-08-14 | 1991-06-25 | Asmo Co., Ltd. | Electric actuator switch with multiple brushes |
US5719434A (en) * | 1993-08-09 | 1998-02-17 | General Automotive Specialty Co., Inc. | Rotary switch |
EP0938112A2 (en) * | 1998-02-24 | 1999-08-25 | Kabushiki Kaisha Honda Lock | Rotary switch device |
Also Published As
Publication number | Publication date |
---|---|
ES2274339T3 (en) | 2007-05-16 |
DE602004002799D1 (en) | 2006-11-30 |
EP1473746B1 (en) | 2006-10-18 |
DE602004006916T2 (en) | 2008-02-21 |
DE602004002799T2 (en) | 2007-08-23 |
DE602004006916D1 (en) | 2007-07-26 |
ES2312875T3 (en) | 2009-03-01 |
EP1473747B1 (en) | 2007-06-13 |
EP1473746A1 (en) | 2004-11-03 |
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