EP0858670A2 - Electric contact switch - Google Patents
Electric contact switchInfo
- Publication number
- EP0858670A2 EP0858670A2 EP96945821A EP96945821A EP0858670A2 EP 0858670 A2 EP0858670 A2 EP 0858670A2 EP 96945821 A EP96945821 A EP 96945821A EP 96945821 A EP96945821 A EP 96945821A EP 0858670 A2 EP0858670 A2 EP 0858670A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- contact
- housing
- switch according
- contact switch
- leg
- 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
- 238000005452 bending Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 9
- 238000005476 soldering Methods 0.000 claims description 6
- 238000001125 extrusion Methods 0.000 claims description 2
- 230000000284 resting effect Effects 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 9
- 238000002347 injection Methods 0.000 description 6
- 239000007924 injection Substances 0.000 description 6
- 238000012360 testing method Methods 0.000 description 5
- 230000007704 transition Effects 0.000 description 5
- 238000013461 design Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
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
- H01H11/0056—Apparatus or processes specially adapted for the manufacture of electric switches comprising a successive blank-stamping, insert-moulding and severing operation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
- H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
- H01H1/24—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting
- H01H1/242—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting the contact forming a part of a coil spring
-
- 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
- H01H13/50—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member
- H01H13/64—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member wherein the switch has more than two electrically distinguishable positions, e.g. multi-position push-button switches
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H21/00—Switches operated by an operating part in the form of a pivotable member acted upon directly by a solid body, e.g. by a hand
- H01H21/02—Details
- H01H21/18—Movable parts; Contacts mounted thereon
- H01H21/22—Operating parts, e.g. handle
- H01H21/24—Operating parts, e.g. handle biased to return to normal position upon removal of operating force
-
- 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
- H01H11/0006—Apparatus or processes specially adapted for the manufacture of electric switches for converting electric switches
- H01H11/0018—Apparatus or processes specially adapted for the manufacture of electric switches for converting electric switches for allowing different operating parts
-
- 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
- H01H2011/0087—Welding switch parts by use of a laser beam
Definitions
- the invention relates to an electrical contact switch, in particular a microswitch for motor vehicles, with a housing carrying contacts and receiving a contact element, on which an actuating element provided with a switching plunger and thus acting on the contact element is mounted.
- an electrical contact switch which carries connection contacts in a housing, a contact element being mounted on a connection contact.
- the contact element is a complex stamped part, which has free cuts, for the manufacture of which an expensive stamping tool is necessary. Nevertheless, the tolerances to be expected in the Qualltat are very large given the tolerances required for economical production. On the one hand this is influenced by the strip thickness and hardness tolerance and on the other hand by the condition of the punching tool. The resulting effects are noticeable in both the switching force and the contact force. In order that there is always a sufficiently high contact force to meet the electrical requirements, the contact element must have a sufficiently high pretension, which means that the switching force and the switching increased noise.
- DE 31 10 971 C2 discloses an electrical contact switch in which the contact element is also a stamped part.
- the contact leg slides along the housing or on the connection contacts and thereby causes the contact connection to self-clean.
- the resilient orientation of the contact element runs to the walls of the housing, ie only in one direction.
- An additional spring element is therefore required to reset the actuating element. So that the contact element has a sufficiently soft spring force, its legs must be long. These legs extend in the direction of actuation, as a result of which the contact switch has a large construction. Furthermore, the contact switch can only switch a circuit, which leads to limited use.
- the invention has for its object to provide an electrical contact switch of the type mentioned, through which an inexpensive, versatile and small design with a high level of excitement is guaranteed.
- the contact element has at least one support leg which is supported on a connection contact and at least one contact leg which returns the actuating element and acts approximately perpendicularly to the connection contacts.
- the contact element is resiliently bent in a V-shape, and the support leg is supported on a base in the interior of the housing with at least partial contact with the contact element, and the contact leg projects in the direction of an opposite side of the base Housing opening, the contact leg having an approximately perpendicular bias.
- this is the restoring force for the actuating element, which counteracts the bottom of the housing. is directed and increases in the operation of the actuating element. In the case of a printed actuating element, this also results in a higher contact force of the support leg on the connection contact present in the bottom of the housing, which improves the electrical connection.
- the contact leg is pressed against the connection contacts, which is ensured by the vertical preload of the contact leg. A different pretension can both achieve a different contact force and react to different widths of the housing.
- the support leg and the contact leg of the contact element are preferably connected to one another via a large bending radius in relation to the material thickness.
- the contact element is a double-sided torsion spring, which has in the middle the support leg to which there is at least about half a coil on both sides, via a spiral with a bending radius ⁇ closes, each carrying a contact leg at its ends.
- the contact element consists in one piece of an electrically conductive round wire, the support leg being bent from two adjacent pieces of wire and each wire piece having an approximately one and a half helix, each helix in a passes over an upward and outward contact leg which has an inward angled portion at its free end.
- the stuckness guarantees a high electrical excitement.
- the use of a round wire reduces the material and manufacturing costs. Due to the two adjacent pieces of wire with the adjoining coils, the contact element has a large supporting surface on the bottom of the housing, as a result of which the contact element always has a secure alignment. In addition, the bend brings about a clean and hook-free sliding on the walls of the housing, on the connection contacts and on the transitions between the connection contacts and the housing.
- the housing consists of the bottom with adjoining, almost perpendicular walls, and the connection contacts are recessed in the floor and in at least one wall, at least in the walls the connection contacts are embedded at the same level . Accordingly, the housing can easily be produced as an injection molded part, and the recesses for the connecting contacts can be produced in the same operation in the production of the injection molded part.
- the connection contacts embedded in the interior of the housing at the same level as the surface of the walls ensure a transition which cannot be felt by the switching feeling.
- connection contacts are expediently led out horizontally from the housing and designed as connection legs for soldering onto a printed circuit board.
- the connection contacts are led vertically out of the housing and used as push-through legs for insertion. executed in a printed circuit board. The push-through legs of the contact switches can be inserted into the holes in the printed circuit board, and the contact switch can then be fastened by wave soldering.
- connection contacts are expediently produced as a lead frame and extrusion-coated in the housing with plastic.
- the number of parts is significantly reduced. This affects both the handling of the housing and the logistics for the timely provision of the components. This measure makes the production of the contact switch very inexpensive while at the same time preventing assembly errors.
- the housing has eccentrically on two opposite walls, each with a journal, which is immersed in the bore holes in the actuating element, at least spaced apart from the journal a stop pin is provided on a wall, which engages in an actuating groove.
- the actuating element is preferably a shell covering the housing, the shape of which is adapted to the contour of the housing, the switching plunger being formed on a shell cover opposite the bottom of the housing the walls protrude into the housing and act on the contact element.
- the shaping of the switching plunger in turn reduces the number of parts, and the switching plunger is always in the correct position with respect to the contact element.
- the actuating element is a pressure plunger, which is inserted in a cover bore fastened to the housing, the pressure plunger coming into contact with the inner wall of the cover , has a switching tappet which is wider in cross section than the cover bore.
- the switching plunger which is wider in cross section, prevents the pressure plunger from falling out through the cover bore, which is smaller in cross section.
- the switching tappet which is rectangular in cross section, is rounded on its switching tip facing the contact element, the switching tip being slightly inclined towards the walls of the housing, past which the switching tappet is moved, as a result of which there is a difference between the switching tip and the corresponding wall of the housing em angle results, which is less than 90 °.
- the contact leg should cover a relatively larger switching path. Therefore, expediently se the switching tappet attached to the actuating element approximately in the middle of the contact leg of the contact element.
- the large contact path also results in greater self-cleaning of the contact pairing.
- the actuating force exerted on the actuating element should be as low as possible. However, since this actuating force also exerts an influence on the contact force between the support leg of the contact element and the connection contact embedded in the bottom of the housing, the contact element with its support leg is preferably welded to the connection contact present in the base of the housing. It is also achieved that the contact element sits firmly in the housing after insertion and welding and no longer falls out. The housing can thus be populated by the machine on the belt and flow into the further production process as debris.
- connection contacts which are embedded in the walls of the housing and which are present in the pivoting region of the contact leg and are located opposite one another have a different height.
- the contact switch then closes two current paths at a different time, which makes the use of the contact switch more versatile.
- connection contacts in a wall are a plurality of connection contacts which are located closer together in the swivel range of the contact element.
- the use of the contact switch is also possible as a position transmitter for the determination of the actuating element.
- the electrical contact switch has a simple yet very safe structure. For this reason it is also possible to miniaturize it, which is of course very inexpensive.
- a contact switch according to the invention has a width of 5 mm, a length of 9.3 mm and a height of 7.5 mm or a width of 5.6 mm, a length of 8.5 mm and a height of 9.1 mm on.
- FIG. 1 is a front view of a contact switch without a button
- FIG. 2 shows the side view of the illustration according to FIG. 1 in the direction of arrow II
- FIG. 3 shows the side view of the illustration according to FIG. 1 in the direction of arrow III
- FIG. 4 shows a front view of the contact switch according to FIG. 1 in section
- FIG. 5 shows a front view of the contact switch according to FIG. 4 in the actuated state of the contact switch
- FIG. 6 shows a section through the contact switch according to FIG. 4 in the direction of arrows VI-VI
- 7 is a plan view of the illustration of FIG. 4 in the direction of arrow VII without actuation element
- FIG. 9 shows a sectional view through a housing equipped with a contact element with alternatively configured connection contacts
- connection contacts according to FIG. 9,
- FIG. 13 shows a plan view of a metal strip for illustrating the manufacturing process of the contact switch
- Fig. 14 is a side view of the illustration of FIG. 13 in the direction of arrow XIV.
- the electrical contact switch has an essentially rectangular housing 1 which consists of the bottom 2 and four walls 3 (3.1, 3.2, 3.3 and 3.4), a housing opening 42 being provided opposite the bottom. Inside the housing 1 carries contacts 4, which in the area of the bottom 1 the housing 1 led out smd. Furthermore, there is a contact element 5 in the housing 1, which interacts with the connection contacts 4.
- Em actuating element 6 is held on em existing bearing 9 on two opposite walls 3.1 and 3.2 and takes the rest position A due to the automatic reset. When an actuating force acts, the actuating element 6 pivots around the bearing 9 and takes its switching position B em. In order to avoid excessive stress on the contact element 5, the actuating element 6 is assigned a stop 7 fixed to the house. The direction in which the actuating element 6 is pivoted out is limited by a stop pin 8 attached to the wall 3.1 or 3.2 of the housing 1.
- the connection contact 4b in the bottom 2 is in the region of the bearing 9 and extends in the long dimension of the housing 1 to almost the middle of the housing 1 and in the narrow dimension of the housing 1 over the entire width of the housing 1, being for the Length extension only a narrow tab 10 is present.
- the contact element 5 is supported with its support leg 11 on the connection contact 4b. Furthermore, the contact element 5 has a contact leg 12 which is at an acute angle to the support leg 11, the contact leg 12 being connected to the support leg 11 via a bending radius 43.
- the contact element 5 is constructed resiliently, and on its contact leg 12, a switching plunger 13 provided on the actuating element 6 is supported. The contact element 5 is already biased even in the rest position A.
- connection contacts 4w lie freely on the surface inside the housing 1 relative to the bearing 9 and extend over a height determining the switching point and over one to in the area of the contact leg 12 reaching width. Since the connection contacts 4w in the walls 3.1 and 3.2 can be acted upon by the contact leg 12 of the contact element 5, the contact element 5 in the region of the contact leg 12 has a pretension which is aligned with the walls 3.1 and 3.2.
- the contact element 5 is thus V-shaped and resilient. It is resiliently clamped in the direction of the actuating element 6 between the switching plunger 13 and the base 2 and between the walls 3.1 and 3.2, the directions of the prestresses being approximately perpendicular to one another.
- the contact element 5 is made of an electrically conductive round wire.
- the support leg 11 is connected to the contact leg 12 via a bending radius 43 which is very large in relation to the material thickness of the contact element 5.
- the material in the bending radius 43 runs in the form of a helix 14, with one contact leg 12 each coming tangentially from the two ends of the helix 14.
- the support leg 11 is worked out in the middle of the helix 14.
- a piece of wire 15 also runs tangentially out of the helix 14 and is offset by approximately 180 degrees to the contact leg 12.
- the length of the piece of wire 15 extends almost to a seat ramp 16 formed on the opposite wall 3.4, is bent there by 180 degrees and dips tangentially back into the helix 14.
- each contact leg 12 carries on his free end a ms interior of the housing 1 directed bend 17. In the transition area to the bend 17 there is a radius which bears against the walls 3.1 or 3.2, whereby a clean, hook-free sliding of the contact leg 12 on the respective wall 3.1 or 3.2 , or on the connecting contacts 4w or the transitions between them.
- connection contacts 4w and the respective wall 3.1 or 3.2 should not be noticeable when operating the actuating element 6.
- the connecting contacts 4w are embedded at the same level in the corresponding walls 3.1 and 3.2.
- connection contact 4b is embedded at the same level, which ensures a better contact of the contact element 5.
- the embedding takes place by rinsing with plastic in an injection mold. Such an injection mold can be produced inexpensively if the walls 3 are perpendicular to the floor 2.
- the connecting contacts 4 are led out of the housing 1 either vertically or horizontally. Outside the housing 1, connecting legs 18 for soldering onto a printed circuit board (not shown) or push-through legs 19 for soldering into a printed circuit board are punched out. All connection contacts 4 are produced in a coherent manner as a leadframe 20, which greatly facilitates work during positioning in the injection mold.
- the bearing 9 between the housing 1 and the actuating element 6 is realized on the one hand by means of bearing pins 21 formed on the outer sides of the walls 3.1 and 3.2 and on the other hand by means of corresponding bearing bores 22 which are present on the actuating element 6 and surround the bearing pins.
- the actuating element 6 is one the housing 1 covering shell 23 is formed.
- the shell 23 consists of a shell cover 24 in the form of an isosceles prism and four shell walls 25 which are perpendicular to one another.
- the walls 3 of the housing 1 are assigned to the prism of the shell cover 24, and three of the shell walls 25 run at the level of the base 2 of the housing 1 when the contact switch is in the switch position B.
- the parallel shell wall 25 close to the bearing 9 is shorter and has a chamfer 2c so that the actuating element 6 can reach the rest position A when pivoting about the bearing 9.
- the shell walls 25 opposite the walls 3.1 and 3.2 of the housing 1 there is an arcuate actuation groove 27 into which the stop pin 8 attached to the housing 1 is immersed and limits the self-resetting path of the actuating element 6.
- the shell walls 25 opposite the walls 3.1 and 3.2 have mounting chamfers 28, the bearing pins 21 and stop pins 8 on the housing in the direction of the actuating element 6 have pin chamfers 29.
- the mounting chamfers 28 and the pin chamfers 29 facilitate the assembly of the actuators ⁇ element 6, which is clipped onto the housing 1.
- a switching plunger 13 directed into the interior of the housing 1 is formed on the shell cover 24 and is so wide that it extends into the vicinity of the walls 3.1 and 3.2 of the housing 1 and thus acts on the contact legs 12 of the contact element 5 strikes.
- the actuating element 6 is a pressure plunger 30.
- the pressure plunger 30 is only moved linearly and assumes the A or B position.
- a cover 31 is clipped onto the housing 1 via the bearing pins 21 and the stop pins 8, and the cover is stuck without play after being clipped on.
- In the lid 31 there is a cover bore 32 through which the pressure plunger 30 projects outwards.
- the stop 7 is formed on the bottom 2, which limits the actuation path towards the inside and thus protects the contact element 5 from damage.
- four individual parts are required for the contact switch, whereas only three individual parts are required in the embodiment of the actuating element 6 giving the bearing 9.
- the mode of operation is identical in both versions.
- the switching plunger 13 is rectangular in cross-section and has a rounded tip 34 on its narrow side facing the contact element 5.
- the width of the switching plunger 13 extends to just before the walls 3.1 and 3.2 of the housing 1.
- the switching plunger 13 has on the Switch cap 34 has an apex 35, from which switch cap 34 extends at an obtuse angle. This results in an angle between the wall 3.1 or 3.2 and the dome 34 of the switching plunger 13 that is less than 90 °.
- the switching plunger 13 attached to the actuating element 6 engages approximately in the middle of the contact leg 12 of the contact element 5, which results in a large contact path of the contact leg with a short actuation path of the actuating element 6 12 results.
- connection contact 4 in the wall 3.1 of the housing 1 is made higher than the connection contact 4 in the wall 3.2 of the housing 1.
- the current path between the connection contact 4 in the Bottom 2 and the connecting contact 4 m of the wall 3.1 are closed before the current path with the contact 4 in the wall 3.2 is closed after further actuation.
- the current path is simply changed, while in the embodiment according to FIG. 10, the current path is changed twice. The narrower the connection contacts 4 are designed, the more current paths can be changed.
- the contact switch is described below.
- the switching plunger 13 presses on the contact limbs 12, which are constantly connected to the connection contact 4 present in the base 2.
- the obtuse-angled switching tip 34 causes a slight lateral force acting outwards in the direction of the walls 3. 1 and 3.2 on the contact legs 12 and thus supports the already existing pretension in the contact legs 12.
- the current path is closed.
- the contact leg 12 is pressed further down, it moves along the contact arc 36 on the corresponding wall 3 and opens or closes corresponding current paths.
- the operating path is only ended when the actuating element 6 comes to rest against the stop 7.
- the restoring force increases Actuating element 6.
- the contact leg 12 presses against the switching plunger 13 and thus moves the actuating element 6 into the rest position A, which cooperate with the actuating groove 27 through the stop pin 8 or with the switching plunger 13 ⁇ cooperating lid inner wall 33 is limited.
- the contact leg 12 of the contact element 5 in turn sweeps along the corresponding wall 3 over all connection contacts 4 until it assumes its point corresponding to the rest position A.
- a manufacturing process for an assembled housing 1 is shown. From the left comes a smooth metallic band 37 without openings, which receives its punched-outs 39 in the work station 38. In the work station 40, the bending takes place in the area of the punched-out areas 39, as a result of which the connecting contacts 4 are positioned and the lead frame 20 is finished. In the subsequent work station 41, the pre-punched, bent band 37 is overmolded with the housing 1 in an injection mold (not shown). In a further work station, the contact element 5 is inserted into the housing 1 via the housing opening 42 (already drawn into the work station 40 for reasons of space).
- the actuating element 6 is assembled and the rod grid 20 is pre-separated for the electrical test of the contact switch.
- the belt 37 runs into a corresponding testing machine, not shown, in which the contact switch is tested according to the electrical requirements, such as current continuity, voltage drop, etc. and the force-path diagram.
- the band 37 is finished-finished with the simultaneous bending and punching of the connecting legs 18 or the desired push-through. legs 19.
- the automatic sorting into good or bad parts takes place.
- the result determined in the testing machine is used for sorting.
- the conclusions regarding the contact switch assigned to the test result can be made at any time, since the manufacture in the individual workstations 38, 40 and the following always takes place in a specific grid represented by the center lines 41.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Push-Button Switches (AREA)
- Mechanisms For Operating Contacts (AREA)
- Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19540536 | 1995-10-31 | ||
DE19540536A DE19540536A1 (en) | 1995-10-31 | 1995-10-31 | Electrical contact switch |
PCT/DE1996/002007 WO1997016839A2 (en) | 1995-10-31 | 1996-10-21 | Electric contact switch |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0858670A2 true EP0858670A2 (en) | 1998-08-19 |
EP0858670B1 EP0858670B1 (en) | 2000-01-26 |
Family
ID=7776257
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96945821A Expired - Lifetime EP0858670B1 (en) | 1995-10-31 | 1996-10-21 | Electric contact switch |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0858670B1 (en) |
DE (2) | DE19540536A1 (en) |
ES (1) | ES2143258T3 (en) |
WO (1) | WO1997016839A2 (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19947748B4 (en) * | 1999-10-05 | 2009-04-23 | Gira Giersiepen Gmbh & Co. Kg | Electric switch |
JP3923732B2 (en) * | 2001-01-15 | 2007-06-06 | アルプス電気株式会社 | Switch device |
DE102005040452A1 (en) * | 2005-08-26 | 2007-03-01 | Leopold Kostal Gmbh & Co. Kg | Actuator mechanism for a push button electrical switch has a movable contact with an integral leaf spring that provides a return force |
DE102007009006B4 (en) * | 2007-02-23 | 2024-09-26 | Kostal Automobil Elektrik Gmbh & Co. Kg | Push button switch for a motor vehicle |
DE102009017013A1 (en) | 2008-04-30 | 2009-11-05 | Marquardt Gmbh | Electric switch |
DE102009021313B3 (en) * | 2009-05-14 | 2010-10-07 | Schurter Gmbh | Electric push-button i.e. foot switch, for truck lift, has flat safety shutdown mat comprising electrical contacts and enclosed by pad-like sheath comprising elastomer receiving excessive force |
ES2584952B1 (en) * | 2016-06-02 | 2017-04-05 | Simon, S.A.U. | Electric switch |
DE102019115773B4 (en) * | 2019-06-11 | 2021-11-18 | Hoover Dam Technology Gmbh | Switch for making and breaking an electrical connection |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2435117A1 (en) * | 1978-09-01 | 1980-03-28 | Seima | Pushbutton operated electric contactor - uses spring wire loops shaped to pass round shafts mounted parallel to printed circuit board |
JPS5988835U (en) * | 1982-12-06 | 1984-06-15 | ホシデン株式会社 | switch |
JPH0351868Y2 (en) * | 1984-12-25 | 1991-11-08 | ||
JPH0542580Y2 (en) * | 1985-10-21 | 1993-10-27 |
-
1995
- 1995-10-31 DE DE19540536A patent/DE19540536A1/en not_active Withdrawn
-
1996
- 1996-10-21 WO PCT/DE1996/002007 patent/WO1997016839A2/en active IP Right Grant
- 1996-10-21 EP EP96945821A patent/EP0858670B1/en not_active Expired - Lifetime
- 1996-10-21 ES ES96945821T patent/ES2143258T3/en not_active Expired - Lifetime
- 1996-10-21 DE DE59604330T patent/DE59604330D1/en not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO9716839A2 * |
Also Published As
Publication number | Publication date |
---|---|
EP0858670B1 (en) | 2000-01-26 |
ES2143258T3 (en) | 2000-05-01 |
DE19540536A1 (en) | 1997-05-07 |
WO1997016839A2 (en) | 1997-05-09 |
WO1997016839A3 (en) | 1997-06-26 |
DE59604330D1 (en) | 2000-03-02 |
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