EP0935270A1 - Interrupteur à curseur - Google Patents

Interrupteur à curseur Download PDF

Info

Publication number
EP0935270A1
EP0935270A1 EP98102150A EP98102150A EP0935270A1 EP 0935270 A1 EP0935270 A1 EP 0935270A1 EP 98102150 A EP98102150 A EP 98102150A EP 98102150 A EP98102150 A EP 98102150A EP 0935270 A1 EP0935270 A1 EP 0935270A1
Authority
EP
European Patent Office
Prior art keywords
movable
movable contact
board
slide switch
switch apparatus
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
Application number
EP98102150A
Other languages
German (de)
English (en)
Other versions
EP0935270B1 (fr
Inventor
Tetsuya Tomotoshi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Niles Parts Co Ltd
Original Assignee
Niles Parts Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Niles Parts Co Ltd filed Critical Niles Parts Co Ltd
Priority to EP19980102150 priority Critical patent/EP0935270B1/fr
Priority to DE69817752T priority patent/DE69817752T2/de
Priority to ES98102150T priority patent/ES2205288T3/es
Publication of EP0935270A1 publication Critical patent/EP0935270A1/fr
Application granted granted Critical
Publication of EP0935270B1 publication Critical patent/EP0935270B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • H01H11/04—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts
    • H01H11/06—Fixing of contacts to carrier ; Fixing of contacts to insulating carrier
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H15/00—Switches having rectilinearly-movable operating part or parts adapted for actuation in opposite directions, e.g. slide switch
    • H01H15/02—Details
    • H01H15/06—Movable parts; Contacts mounted thereon

Definitions

  • This invention relates to an improvement on a slide switch apparatus having a movable contact held by a movable board arranged to be slidably contacted with a fixed contact so as to perform switch operation. More particularly, this invention relates to a slide switch apparatus improved for accurately detecting a shift position of an automatic transmission of automobile to prevent chatter from occurring between the movable contact and the movable board due to thermal expansion or change in tolerance, where used by immersing in a high-temperature oil as use of an in-oil inhibitance switch to be installed within an automatic transmission, while for being assembled onto a movable board in a one-touch manner.
  • the conventional slide switch apparatus in general is structured, for example as shown in Fig. 7, by a movable board a having an engaging portion d having in a movable contact attaching surface a support projection c for supporting a movable contact b, and an elastic rib f having an engaging projection e for engaging the movable contact b oppositely to the engaging portion d.
  • the apparatus is structured, as shown in Fig. 8, by a movable board g having a projection h that is cold-crimped, and a movable contact i fixed to the movable board g through screw fastening or ultrasonic welding.
  • the slide switch apparatuses shown in Fig. 7 and Fig. 8 are disclosed by Japanese Unexamined Utility Model Publication. No. S57-117523.
  • the present invention has been made in order to solve the above-stated problem. It is an object to, even where a slide switch apparatus is used in a state of being immersed in a high-temperature oil, prevent chatter from occurring between a movable contact and a movable board, with the movable contact assembled onto the movable board in a one-touch manner.
  • a slide switch apparatus having a movable contact, a movable board for supporting the movable contact, a fixed contact with which the movable contact is slidably contacted, a printed board for supporting the fixed contact, wherein the movable contact comprising: a gap in which the movable contact can be inserted in a direction perpendicular relative to a direction of sliding thereof; a step portion formed on an extension line of the gap and an engaging portion formed sectionally in valley form; and the movable contact comprising: a leadframe inserted in the gap; and a chatter preventive piece provided in the lead frame correspondingly to step portion and the engaging portion so as to be engaged with the step portion and the engaging portion.
  • the invention of claim 2 provides a slide switch apparatus wherein the movable board has the step portion and the engaging portion at opposite ends thereof.
  • the invention of claim 3 provides a slide switch apparatus wherein the chatter preventive piece is elastically fitted with the step portion of the movable board so as to prevent the movable contact from chattering in that rectangular direction.
  • the invention of claim 4 provides a slide switch apparatus wherein the chatter preventive piece is press-contacted with the engaging portion of the movable board so as to prevent the movable contact from chattering in that slide direction thereof.
  • the invention of claim 5 provides a slide switch apparatus wherein the movable board is coupled to a manual valve within an automatic transmission of an automotive vehicle.
  • a printed board 1 is formed of a synthetic resin to have such resistance to heat and oil that can afford to withstand against use of being immersed in an high-temperature oil contained within an automatic transmission.
  • the printed board 1 has five rows of fixed contacts 11 at a back surface 12 thereof.
  • the fixed contacts 11 are portions over which a movable contact 2, hereinafter referred to, slides in contact therewith.
  • a plurality of walls are provided along the fixed contacts 11. These plural walls have dual functions to enhance insulation resistance between the fixed contacts 11 and to guide therealong a projection 31, hereinafter referred to, of the movable contact 3.
  • the printed board 1 has a connector 13 integrally formed therewith so that terminals (not shown) electrically connected to the fixed contacts 11 are projected to an inside of the connector 13. Further, the printed board 1 has several crimp portions 14 provided at locations in a periphery thereof. The crimp portions 14 are portions on which respective crimp pieces 53, hereinafter referred to, are to be crimped over.
  • the movable contact 2 is a part that slides in contact over the fixed contact 11.
  • the movable contact 2 has contact pieces 21 in number corresponding to the number of rows, i.e. five sets, of the fixed contacts alternately arranged. Each set of the contact pieces 21 is comprised by a pair. Also, the movable contact 2 has a chatter-preventive pieces 22, 23, 24, 25 and leadframes 26, 27.
  • the leadframe 26, 27 are protons to be inserted in gaps 37, to be stated in detail, and are formed by press-working a springy stainless steel sheet or the like into one body having the contact pieces 21.
  • the chatter preventive pieces 22, 23, 24, 25 are provided in the leadframe 26 at locations corresponding to the step portions 32, 33 and the engaging portions 34, 35 of the movable board 3. By engaging the chatter preventive pieces 22, 23, 24, 25 with the step portions 32, 33 and the engaging portions 34, 35, the movable contact 2 is to be assembled on the movable board in a one-touch manner.
  • the movable board 3 is formed of a synthetic resin to have projections 31 for wiping over the surface of the fixed contact 11, gaps 37 extending in a direction perpendicular to a direction of sliding so as to receive therein the movable contact 2 in that perpendicular direction, step portions 32, 33 formed on an extension line of the gaps 37 and engaging portions 34, 35 formed sectionally in a valley-like form. Further, a metallic pin 36 engageable with an operating portion 4, hereinafter referred to, is insert-formed.
  • the first chatter preventive piece 22 provided on the opposite side to the second chatter preventing piece 23 gets over the first step portion 32 to be elastically fitted with the movable board 3. In this manner, the movable contact 2 is prevented from chattering in the rectangular direction.
  • the third and fourth chatter preventive pieces 24, 25 are respectively become press-contacted with the first and second engaging portions 34, 35. To this end, the movable contact 2 is prevented from chattering in the slide direction.
  • the operating portion 4 has a coupling portion 41 for being coupled to a manual valve (not shown) of an automatic transmission, an insertion portion for being fitted over by a guide block 6, hereinafter referred to, and an engaging hole 43 for being engaged with a pin 36 of the movable board 3.
  • the engaging hole 43 is formed in an elongate hole that is long in a direction rectangular to the direction of movement of the movable board 3.
  • a frame member 5 is a part that is press-worked from a metallic plate.
  • the frame member 5 is provided with an elonagate hole 51 into which a pin 36 of the movable board 3 is inserted, a hole 52 provided corresponding to a hole 72 of a bracket 72, hereinafter referred to, and crimp pieces 53 for being crimped over respective crimp portions 14 of the printed board 1.
  • the movable board 3 is accommodated in a space defined by the frame member 5 and the printed board 1. Incidentally, the width of the elongate hole 51 is set somewhat greater than the diameter of the pin 36.
  • the guide block 6 is a part interposed between the operating portion 4 and the printed board 1 so that the operating portion 4 is guided along a rail 15 provided in the printed board 4.
  • the guide block 6 is provided with grooves 61, 62 into which respective insertion portions 42 of the operating portion 4 are inserted, and a recessed portion 63 into which the rail 15 of the printed board 1 is inserted.
  • the bracket 7 has holes 71 for attachment to a case of the automatic transmission, and holes 72 for attachment to the frame member 5.
  • the bracket 7 and the frame member 5 are fixed by tightening nuts (not shown) through the holes 72 and the holes 52.
  • the slide switch apparatus of this embodiment is installed, in a position of the direction of arrow UP shown in Fig. 6 taken upward, within the case of the automatic transmission.
  • the coupling portions 41 of the operating portion 4 are coupled with a manual valve and a detent lever (both not shown). Consequently, if a driver operates a shift lever (not shown) to actuate the detent lever, the manual valve and the operating portion 4 are responded to move to their corresponding shift positions.
  • the movable board 3 coupled to the operating portion 4 through the pin 36 is moved together with the operating member 4 so that the movable contact 2 provided on the movable board 3 is switched over in contact position relative to the fixed contact 11. This enables the slide switch apparatus to operate switching in a manner corresponding to a shift position.
  • the slide switch apparatus since the slide switch apparatus is installed, in the position directed upward of the arrow UP shown in Fig. 6 as stated before, within the automatic transmission case, the fixed contacts 11 of the printed board 1 is directed downward. As a consequence, foreign matters being adhered to the fixed contacts 11 fall due to the force of gravity, to be stripped off from the fixed contacts. To this end, the slide switch apparatus does not undergo poor insulation caused between the fixed contacts 11, even where it is used by immersion in an oil contaminated by mixed with conductive foreign matters within the automatic transmission.
  • the slide switch apparatus provides a slide switch apparatus having a movable contact, a movable board for supporting the movable contact, a fixed contact with which the movable contact is slidably contacted, a printed board for supporting the fixed contact, wherein the movable contact comprising: a gap in which the movable contact can be inserted in a direction perpendicular relative to a direction of sliding thereof; a step portion formed on an extension line of the gap and an engaging portion formed sectionally in valley form; and the movable contact comprising: a leadframe inserted in the gap; and a chatter preventive piece provided in the lead frame correspondingly to step portion and the engaging portion so as to be engaged with the step portion and the engaging portion.
  • the slide switch apparatus is used in an ordinary manner or in a state of being immersed in a high-temperature oil, chattering can be prevented from occurring between the movable contact and the movable board. Furthermore, the movable board can be assembled onto the movable board in a one-touch manner.
  • the movable board has the step portion and the engaging portion at opposite ends thereof, an effect that the movable board is positively held at opposite end thereof is provided, in addition to the above effect.
  • chatter preventive piece is elastically fitted with the step portion of the movable board, an effect that the movable contact is prevented from chattering in that rectangular direction is provided, in addition to the above effects.
  • chatter preventive piece is press-contacted with the engaging portion of the movable board, an effect is provided that the movable contact is prevented from chattering in that slide direction thereof is provided, in addition to the above effects.
  • the movable board is coupled to a manual valve within an automatic transmission of an automotive vehicle, an effect that the shift position of the automatic transmission is detected with high accuracy, in addition to the above effects.
EP19980102150 1998-02-07 1998-02-07 Interrupteur à curseur Expired - Lifetime EP0935270B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP19980102150 EP0935270B1 (fr) 1998-02-07 1998-02-07 Interrupteur à curseur
DE69817752T DE69817752T2 (de) 1998-02-07 1998-02-07 Schiebeschalter
ES98102150T ES2205288T3 (es) 1998-02-07 1998-02-07 Aparato de conmutador deslizante.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19980102150 EP0935270B1 (fr) 1998-02-07 1998-02-07 Interrupteur à curseur

Publications (2)

Publication Number Publication Date
EP0935270A1 true EP0935270A1 (fr) 1999-08-11
EP0935270B1 EP0935270B1 (fr) 2003-09-03

Family

ID=8231370

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19980102150 Expired - Lifetime EP0935270B1 (fr) 1998-02-07 1998-02-07 Interrupteur à curseur

Country Status (3)

Country Link
EP (1) EP0935270B1 (fr)
DE (1) DE69817752T2 (fr)
ES (1) ES2205288T3 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1589034A (fr) * 1968-08-29 1970-03-16
US4001526A (en) * 1974-07-12 1977-01-04 Molex Incorporated Alternate action switch
US4556764A (en) * 1985-03-05 1985-12-03 Indak Manufacturing Corp. Slide action electrical switches
GB2276271A (en) * 1993-03-15 1994-09-21 Toyo Denso Kk Switch device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1589034A (fr) * 1968-08-29 1970-03-16
US4001526A (en) * 1974-07-12 1977-01-04 Molex Incorporated Alternate action switch
US4556764A (en) * 1985-03-05 1985-12-03 Indak Manufacturing Corp. Slide action electrical switches
GB2276271A (en) * 1993-03-15 1994-09-21 Toyo Denso Kk Switch device

Also Published As

Publication number Publication date
DE69817752D1 (de) 2003-10-09
DE69817752T2 (de) 2004-07-29
EP0935270B1 (fr) 2003-09-03
ES2205288T3 (es) 2004-05-01

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