EP0708465B1 - Switch - Google Patents
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- Publication number
- EP0708465B1 EP0708465B1 EP19950116128 EP95116128A EP0708465B1 EP 0708465 B1 EP0708465 B1 EP 0708465B1 EP 19950116128 EP19950116128 EP 19950116128 EP 95116128 A EP95116128 A EP 95116128A EP 0708465 B1 EP0708465 B1 EP 0708465B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- switch
- moving
- terminal
- plate
- leaf spring
- 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.)
- Expired - Lifetime
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Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/02—Details
- H01H13/26—Snap-action arrangements depending upon deformation of elastic members
- H01H13/36—Snap-action arrangements depending upon deformation of elastic members using flexing of blade springs
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/58—Electric connections to or between contacts; Terminals
- H01H1/5805—Connections to printed circuits
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/02—Details
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/02—Details
- H01H13/12—Movable parts; Contacts mounted thereon
- H01H13/20—Driving mechanisms
Definitions
- the present invention relates generally to a switch of the kind defined by the precharacterizing features of claim 1 and known from the DE-A-2 409 604 for use in an electronics apparatus, and more particularly to a switch which is suitable for mounting on a printed circuit board.
- a conventional switch is described with reference to FIG.17 and FIG.18.
- a fixed terminal 2 having a contact 10A and a moving member terminal 3 supporting a moving switch-plate 6 are inserted in respective openings of a switch case 1 made of electrical insulating material such as synthetic resin.
- An upper supporting part 3A and a lower supporting part 3B are formed on an inner wall of a recess formed in an upper portion of the moving member terminal 3 in FIG.17.
- a slide member 7 made of electrical insulating material such as synthetic resin is arranged at an upper portion of the switch case 1 so as to be movable in the direction of an arrow M.
- the moving switch-plate 6 is engaged with a slot 7A of the slide member 7 at an upper end part 6A.
- a contact 10B which contacts a contact rest part 3C of the moving member terminal 3 is fixed on a lower end part 6B of the moving switch-plate 6.
- an upper end part of a V-shaped leaf spring 5 is engaged with the moving switch-plate 6 at an engaging point (B), and a lower end part thereof is engaged with the lower supporting part 3B of the moving member terminal 3.
- An upper end part of an L-shaped change-over member 4 is engaged with the upper supporting part 3A of the moving member terminal 3 at .
- another engaging point or fix point (C) is engaged with the moving switch-plate 6 at another engaging point (A).
- a compression coil spring 9 is provided between the switch case 1 and a flange 7B of the slide member 7 so as to keep depressing force on the flange 7B in the direction of an arrow L.
- the upper opening of the switch case 1 is covered by a cover 8 made of a metal plate.
- the switch is mounted on a printed circuit board 25 by inserting the fixed terminal 2 and the moving member terminal 3 into openings of the printed circuit board 25, and then soldering the terminals 2 and 3 to respective conductive layers on the printed circuit board 25.
- FIG.18A shows the OFF-state of the switch.
- the moving switch-plate 6 is rotated counterclockwise and the moving switch-plate 6 represented by a line connecting between the engaging points A and B is moved in the direction of arrow N and brought close to the engaging point C as shown in FIG.18A.
- the moving switch-plate 6 is on the engaging point C.
- the slide member 7 is further moved in the direction of arrow M, and when the moving switch-plate 6 has passed the engaging point C as shown in FIG.18C, the moving switch-plate 6 is rapidly moved to the direction of the arrow N and the contact 10B contacts the contact 10A of the fixed terminal 2, and the switch is closed.
- the moving switch-plate 6 is vertically arranged with respect to the surface of the printed circuit board 25. Therefore, a size between a bottom face having the fixed terminal 2 and that between moving member terminal 3 and the cover 8 is large. Thus, there is a disadvantage that a height of the switch from the surface of the printed circuit board 25 is large.
- the moving member terminal takes the form of an L-shaped profile, and a moving switch-plate, a leaf spring and a change-over member are horizontally arranged substantially parallel to the bottom face of a switch case.
- a bent part to which the first projection part contacts when the moving contact is remote from the fixed contact is formed at an end part of a slit of the leaf spring.
- the moving switch-plate comprises hook parts at an end part of the slit adjacent to the moving contact, and the end parts of the change-over member are engaged with the hook parts.
- the moving member terminal comprises a third projection part to be inserted to the slit of the change-over member on the recess portion of the moving member terminal.
- two switch units each of which comprises the moving member terminal, change-over member, leaf spring and moving switch-plate are assembled in one switch case, and two switch units are engaged with the slide member so that both the switch units are operated at the same time.
- the moving member terminal takes the form of the L-shaped profile, and the moving switch-plate, the leaf spring and the change-over member are horizontally arranged with respect the bottom face of the switch case. Therefore, the height of the switch can be reduced.
- FIG.1 The switch of the first embodiment in accordance with the present invention is described with reference to FIG.1, FIG.2A, FIG.2B, FIG.3A, FIG.3B, FIG.4A, FIG.4B and FIG.4C.
- FIG.1 two switch units 40 are assembled in one switch case 11, and a switch having two circuits is illustrated.
- the switch unit 40 is defined by an assembled mechanism as shown by FIG.2B of which four elements as shown in FIG.2A are assembled.
- the two switch units 40 are identical with each other in configuration and operation. Therefore, in the description hereafter, the description with respect to one of the switch units is applicable to the other switch unit.
- the switch case 11 made of electrical insulating material such as synthetic resin comprises two oblong openings 11B and two oblong openings 11D in the bottom plate 11C.
- a wiring part 12A of a fixed terminal 12 with a fixed contact 12A at an end part is inserted in the oblong opening 11B.
- the wiring part 12A is protruded outward through the oblong opening 11B of the bottom plate 11, and is connected to a conductive layer of a printed circuit board to mount the switch on the printed circuit board, for example.
- a wiring part 13E formed on one end part of an L-shaped moving member terminal 13 is inserted into the oblong opening 11.
- the wiring part 13E is also connected to an conductive layer of the printed circuit board in a manner similar to the wiring part 12A.
- FIG.2A Detailed configurations of the moving member terminal 13 and other members to be mounted on the moving member terminal 13 are shown in FIG.2A.
- a first projection part 11C and a second projection part 13G which is shorter than first projection part 13C are provided on the other end portion of the L-shaped moving member terminal 13, and a recess portion 13D is formed between the first projection part 13C and the second projection part 13G.
- Two recesses which serve as the first supporting recess 13A and a second supporting recess 13B respectively are formed at opposite positions on the recess portion 13D.
- a recess 15B formed at one end of a shallowly U-shape bent leaf spring 15 is engaged with the second supporting recess 13B.
- a recess 14A formed at one end of a change-over member 14 is engaged with the first supporting recess 13A.
- the change-over member 14 has a bifurcate or fork shape in which the end part having the recess 14A is a joint, and the second projection part 13G of the moving member terminal 13 is inserted in a slit 14C of the bifurcation.
- the other end 15A of the leaf spring 15 is rotatably engaged with a recess 16A formed on an end part of a slit 16D of a moving switch-plate 16.
- Notches 14B formed on the end parts of the change-over member 14 are rotatably engaged with a cutout part 16B formed at the other end part of the slit 16D of the moving switch-plate 16. Consequently, the moving switch-plate 16 is arranged substantially parallel to the bottom plate 11C of the switch case 11.
- a moving contact 20B is mounted on an end part 16E of the moving switch-plate 16.
- the slide member 17 comprises a slot 17A to be engaged with the end part 16C of the moving switch-plate 16, and can be moved in the direction of arrow M in the switch case 11.
- a frame 18 covers an opening part of the switch case 11 for holding the slide member 17 in the switch case 11.
- a coil spring 19 is arranged in interior space 17E of the slide member 17 in a compressed state, one end of the coil spring 19 is held by a spring pedestal 11A of the switch case 11 and the other end thereof is held by a spring pedestal 17C of the slide member 17 in the interior space so as to bias the slide member 17 to the direction of arrow N.
- FIG.4A, FIG.4B and FIG.4C which schematically illustrate the change-over member 14, leaf spring 15 and moving switch-plate 16 of the switch.
- An engaging point (A) represents the engaging part between the notches 14B of the change-over member 14 and the cutout part 16B of the moving switch-plate 16.
- An engaging point (B) represents the engaging part between the other end 15A of the leaf spring 15 and the recess 16A of the moving switch-plate 16.
- an engaging point (C) represents the engaging part between the recess 14A of the change-over plate 14 and the first supporting recess 13A of the moving member terminal 13.
- the engaging points (A) and (B) move during operation of the switch, while the engaging point (C) does not move during the operation.
- FIG.4A shows the OFF-state of the switch.
- the moving switch-plate 16 represented by a straight line connecting between the engaging points (A) and (B) is moved in the direction of the arrow M by being pressed at the end part 16C by the slide member 17.
- the engaging point (A) is rotated clockwise about the engaging point (C). Therefore, the moving switch-plate 16 is moved so as to compress the leaf spring 15.
- FIG.4B shows the state that the moving switch-plate 16 is on the engaging point (C).
- the leaf spring 15 is compressed to the utmost.
- the slide member 17 is further moved to the direction of the arrow M, and when the moving switch-plate 16 passes the engaging point (C) as shown in FIG.4C, the change-over member 14 is rotated clockwise by an expanding force of the leaf spring 15. Consequently, the engaging point (A) is rapidly rotated clockwise and the moving switch-plate 16 is moved in the direction of the arrow M, and the moving contact 20B contacts the fixed contact 20A of the fixed terminal 12.
- the slide member 17 returns to the original position by the expansion force of the coil spring 19 by releasing the slide member 17, and the switch becomes OFF-state by reverse operation to the operation as mentioned above.
- two moving switch-plates 16 having the same configuration are simultaneously operated by the action of the slide member 17, and two switching circuits simultaneously becomes ON-state or OFF-state.
- the switch when the slide member 17 is pressed in the direction of the arrow M, the switch becomes ON-state; and when the slide member 17 is released ,the switch becomes OFF-state.
- the switch can be configurated so that it alternately becomes ON-state or OFF-state by each press of the slide member 17 by combining a known lock-mechanism (not shown).
- the switch keeps ON-state by pressing the slide member 17, and keeps OFF-state by pulling the slide member 17.
- a thin type switch of which a size between from the bottom plate 11C to the frame 18 is small is realized, since a substantially L-shaped moving member terminal 13 is mounted in the switch case 11 and the moving switch-plate 16, leaf spring 15 and change-over member 14 are arranged substantially parallel to the bottom plate 11C of the switch case 11.
- FIG.1 FIG.3A and FIG.3B
- the thin type switch having plural switching units is realizable.
- FIG.5A The switch of the second embodiment of the present invention is described with reference to FIG.5A, FIG.5B, FIG.6 and FIG.7.
- a moving member terminal 23 and a leaf spring 25 are different from those of in the first embodiment.
- Remaining elements are identical with the corresponding elements in the first embodiment.
- Elements similar to the elements in the first embodiment are identified by like reference numerals and the description is omitted.
- a first projection part 23C of the moving member terminal 23 is made shorter than the first projection part 13C of the moving member terminal 13 as shown in FIG.2A, and other parts are made substantially similar to the moving member terminal 13.
- the leaf spring 25 has a bent part 25C at an end part apart from the recess 15B in an oblong slit 25D formed from a part adjacent to the recess 15B to the central part of the leaf spring 25.
- the bent part 25C is bent to the inside of the U-shaped leaf spring 25.
- FIG.5B is an assembly diagram of the switch unit in the second embodiment. Referring to FIG.5B, the first projection part 23C of the moving member terminal 23 is inserted in the slit 25D of the leaf spring 25.
- FIG.6 is a plan view of the switch in ON-state.
- the slide member 17 is moved in the direction of arrow M, and the moving contact 20B of each moving switch-plate 26 contacts the fixed contact 20A.
- the first projection part 23C of the moving member terminal 23 is inserted in the slit 25D of the leaf spring 25.
- FIG.7 is a plan view of the switch in which the slide member 17 is moved in the direction of arrow N and the switch is in OFF-state.
- the moving switch-plate 16 is moved in the direction of arrow N by the movement of the slide member 17 and the moving contact 20B is removed from the fixed contact 20A.
- the leaf spring 25 rotates clockwise. Rotation of the leaf spring 25 is suspended when the bent part 25C touches the first projection part 23C of the moving member terminal 23, and movement of the moving switch-plate 16 is also suspended.
- the first projection part 13C in FIG.2B is longer than the first projection part 23C in FIG.5B, and the first projection part 13C is protruded from the leaf spring 15.
- the first projection part 23C in FIG.5B is placed at the same level of the face of the leaf spring 25.
- the bent part 25C of the leaf spring 25 is protruded inside of the U-shaped leaf spring 25 and the first projection part 23C touches the bent part 25C, the first projection part 23C is not needed to be so long as to protrude from the slit 25D of the leaf spring 25. Since the first projection part 23C is shorter than the first projection part 13C, the material to fabricate the moving member terminal 23 is reduced, and the size of the switch is also reduced.
- the switch of the third embodiment of the present invention is described with reference to FIG.8A, FIG.8B, FIG.9A, FIG.9B and FIG.10.
- a moving member terminal 33 and a moving switch-plate 26 are different from the moving member terminal 23 and the moving switch-plate 16 in the second embodiment as shown in FIG.5A, respectively.
- Other elements in the switch of the third embodiment are identical with the corresponding elements in the switch of the second embodiment. Therefore, elements similar to the elements in the second embodiment are identified like reference numerals, and the description is omitted.
- the moving member terminal comprises the first projection part 23C and the second projection part 13G which is shorter than the first projection part 23C. Furthermore, a third projection part 33F which is shorter than the second projection part 13G is provided between the first projection part 23C and the second projection part 13G.
- FIG.8B is an assembly diagram of the switch unit of the third embodiment.
- the third projection part 33F is inserted in the slit 14D of the change-over member 14. Position, shape and a size of the third projection part 33F are selected so as to avoid interference between motions of the third projection part 33F and the change-over member 14, leaf spring 25 and moving switch-plate 26.
- the moving switch-plate 26 has hook parts 26F at an end part adjacent to the moving contact 20B in a slit 26D.
- the hook parts 26F take the forms of hook.
- FIG.9A is a plan view of the moving switch-plate 26 and the change-over member 14 to be engaged with the hook parts 26F of the moving switch-plate 26, at the state before the change-over member 14 is engaged with the moving switch-plate 26.
- the change-over member 14 is moved in the direction of an arrow and is forced to the hook parts 26F at the notches 14B of the change-over member 14.
- the change-over member 14 has resiliency in the width direction, because of having the slit 14D. Therefore the notches 14B pass the arrow-shaped hook parts 26F and are engaged with the hook parts 26F as shown in FIG.9B.
- the change-over member 14 Since the hook parts 26F take the forms of the hook, after the notches 14B have been inserted in the hook parts 26F, the change-over member 14 does not easily separate from the moving switch-plate 26. Namely, the change-over member 14 is temporarily assembled to the moving switch-plate 26.
- the third projection part 33F is inserted in the slit 14D of the change-over member 14.
- FIG.11 Assembly process of the switch in the third embodiment is shown in FIG.11 through FIG.16.
- FIG.11 first, the notches 14B of the change-over member 14 are inserted in the hook parts 26F of the moving switch-plate 26, and the change-over member 14 is temporarily engaged with the moving switch-plate 26.
- FIG.12 shows a state before assembling with the moving member terminal 33 of the change-over member 14 which has been temporarily engaged with the moving switch-plate 26.
- the recess 14A of the change-over member 14 is engaged with the first supporting recess 13A.
- the recess 15B of the leaf spring 15 is engaged with the second supporting recess 13B of the moving member terminal 33.
- FIG.16 shows the switch unit in the state that the moving switch-plate 26 is in the OFF-state, and the switch unit is mounted to the switch case 11 in this state.
- the moving member terminal is formed in the L-shape, and the moving switch-plate, the leaf spring and the change-over member are arranged substantially parallel to the bottom face of the switch case. Therefore the height of the switch from the mounting printed circuit board to the frame cover can be reduced.
- the notches 14B of the change-over member 14 are engaged with the hook parts 26F formed on an end part of the slit 26D of the moving switch-plate 26 by utilizing elasticity of the change-over member 14 itself.
- the change-over member 14 since the change-over member 14 is temporarily engaged with the moving switch-plate 26 in assembly process, dropout of the change-over member 14 can be prevented, the assembly work is easily accomplished, and steps of the assembly work can be reduced.
Landscapes
- Push-Button Switches (AREA)
- Slide Switches (AREA)
- Toys (AREA)
Description
Claims (8)
- A switch comprisinga fixed terminal (12) having a fixed contact (20A) on one end part and a wiring part (12A) to be connected to an external circuit on the other end part,a moving member terminal (13) for holding a moving switch-plate (16) having a moving contact (20B) for detachably contacting said fixed contact (20A), having a wiring part (13E) to be connected to an external circuit at one end part,a switch case (11) for holding said fixed terminal (12) and said moving member terminal (13) so that said fixed terminal (12) is electrically insulated from said moving member terminal (13) and said wiring parts (12A, 13E) of said fixed terminal (12) and said moving member terminal (13) to be connected to respective external circuits are protruded from the same wall of said switch case, anda slide member (17) slidably engaged in said switch case (11) with an end part (16C) of said moving switch-plate (16),said moving member terminal (13) is made of an L-shaped member and has a first projection part (13c) at the other end part of said L-shaped member and a recess portion (13D) formed at the base portion of said first protection part (13c), and the following further components are provided:a leaf spring (15) engaged at its one end part (15B) with a second supporting recess (13B) in said recess portion (13D) formed on said moving member terminal (13), and receiving said first projection part (13C) of said moving member terminal (13) in a slit (15D) formed in a central portion of said leaf spring,a change-over member (14) engaged at its one end (14A) with a first supporting recess (13A) formed on an opposite position to said second supporting recess (13B) in said recess portion (13D) of said moving member terminal (13), anda moving switch-plate (16) having said moving contact (20B) at its one end part and a slit (16D) in a central portion, arranged substantially parallel to a face (11D) of said switch case (11) for supporting said fixed terminal (12) and said moving member terminal (13) so as to protrude outward said wiring parts (12A, 13E) to be connected to external circuits, engaged rotatably with the other end (15A) of said leaf spring (15) at an end part apart from said moving contact (20B), and engaged rotatably with the other end (14B) of said change-over member (14) at a nearer end part of said slit (16D) to said moving contact (20B).
- A switch in accordance with claim 1, wherein a bent part (25C) to which said first projection part (23C) contacts when the moving contact is remote from the fixed contact is formed at an end part of a slit (25D) of said leaf spring (25) .
- A switch in accordance with claim 1, wherein said moving switch-plate (26) comprises hook parts (26F) at an end part of said slit (26D) adjacent to said moving contact (20B), and the end parts (14B) of said change-over member (14) are engaged with said hook parts (26F).
- A switch in accordance with claim 1, wherein I said moving member terminal (33) comprises a third projection part (33F) to be inserted to the slit (14D) of said change-over member (14) at said recess portion of said moving member terminal (33).
- A switch in accordance with claim 1, wherein' two switch units each of which comprises said fixed terminal (12), moving member terminal (33), leaf spring (25) and moving switch-plate (26) are provided in one switch case (11), and said two switch units are engaged with one slide member (17) so as to make simultaneous operation.
- A switch in accordance with claim 2, wherein two switch units each of which comprises said fixed terminal (12), moving member terminal (33), leaf spring (25) and moving switch-plate (26) are provided in one switch case (11), and said two switch units are engaged with one slide member (17) so as to make simultaneous operation.
- A switch in accordance with claim 3, wherein two switch units each of which comprises said fixed terminal (12), moving member terminal (33), leaf spring (25) and moving switch-plate (26) are provided in one switch case (11), and said two switch units are engaged with one slide member (17) so as to make simultaneous operation.
- A switch in accordance with claim 4, wherein two switch units each of which comprises said fixed terminal (12), moving member terminal (33), leaf spring (25) and moving switch-plate (26) are provided in one switch case (11), and said two switch units are engaged with one slide member (17) so as to make simultaneous operation.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP25191194 | 1994-10-18 | ||
JP251911/94 | 1994-10-18 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0708465A2 EP0708465A2 (en) | 1996-04-24 |
EP0708465A3 EP0708465A3 (en) | 1996-05-08 |
EP0708465B1 true EP0708465B1 (en) | 1998-09-09 |
Family
ID=17229799
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19950116128 Expired - Lifetime EP0708465B1 (en) | 1994-10-18 | 1995-10-12 | Switch |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0708465B1 (en) |
DE (1) | DE69504618T2 (en) |
TW (1) | TW293129B (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6798818B2 (en) | 2016-08-10 | 2020-12-09 | アルプスアルパイン株式会社 | Switch device and detection device to which the switch device is attached |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2409604B2 (en) * | 1974-02-26 | 1978-04-27 | Rudolf Schadow Gmbh, 1000 Berlin | Slide button snap switch |
DE7801399U1 (en) * | 1978-01-19 | 1978-05-11 | Bsg Schalttechnik Gmbh & Co Kg, 7460 Balingen | Snap switch |
-
1995
- 1995-08-11 TW TW84108393A patent/TW293129B/zh active
- 1995-10-12 DE DE1995604618 patent/DE69504618T2/en not_active Expired - Fee Related
- 1995-10-12 EP EP19950116128 patent/EP0708465B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE69504618D1 (en) | 1998-10-15 |
TW293129B (en) | 1996-12-11 |
EP0708465A3 (en) | 1996-05-08 |
DE69504618T2 (en) | 1999-05-06 |
EP0708465A2 (en) | 1996-04-24 |
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