With Heart-shape Cam Patents (Class 200/524)
  • Patent number: 5539169
    Abstract: A switch case 10 is provided with a heart-shaped cam groove member 15 having a cam groove 16 and there is inserted a return spring between the switch case 10 and a contact holder 30. The contact holder 30 is provided with a lock pin 60 having the top end 64 thereof engaged with the cam groove 16. The lock pin 60 has a curved portion 61 adapted to be pressed by a portion of a contact plate 50, wherein the top end 64 of the curved portion 61 is held into engagement with the cam groove 16. As a result, an extra space for the cam groove, 16 is not needed any more on the side of the contact holder 30, contributing to miniaturization of the whole switch assembly. Further since the lock pin 60 is pressed by means of the contact plate 50, it is unnecessary to have an exclusive return spring provided therein.
    Type: Grant
    Filed: December 30, 1994
    Date of Patent: July 23, 1996
    Assignee: Toyodenso Kabushiki Kaisha
    Inventor: Youichi Sekita
  • Patent number: 5432312
    Abstract: A push-lock device has a damper mechanism 9 which includes a strip body 17; protruding portions 14, 16; a protruding portion 26; and a rubber ring 23. The strip body 17 is arranged in the moving direction of the sliding body 4 housed in the case 2 and has a meandering groove 22 formed therein. The protruding portions 14, 16 support rotatably the ends of the strip body 17. The protruding portion 26 is arranged to the sliding body 4 and engages to the meandering groove 22. The rubber ring 23 is arranged between the base 2b of the case 2 and one end of the strip body 17. The damper mechanism 9 can brake the movement of the sliding body 4 to prevent the sliding body from returning quickly from the locking position. The shock noise of the sliding body is reduced and the knob can be prevented from slipping out from the operating shaft.
    Type: Grant
    Filed: July 16, 1993
    Date of Patent: July 11, 1995
    Assignee: Alps Electric Co., Ltd.
    Inventors: Hiroki Otani, Akira Oyama, Masao Ohkita
  • Patent number: 5426274
    Abstract: A push button switch, particularly a master switch, has housing-affixed contacts (4, 7) and at least one contact bridge (8, 9) movable by a spring plunger (10). A spring-switching mechanism (24, 25, 26) is operatively coupled between the spring plunger and a manually-movable sliding switch, or switch actuator, (22). A guiding, or sliding, locking linkage apparatus for the sliding switch (22), which includes two locking parts, a first of which is a track (27) and a second of which is a follower lever (28) for engaging the track. Upon alternate depressions of the sliding switch, the sliding switch alternately moves between "on" and "off" positions. In order to prevent damage to the locking apparatus upon a pulling of the sliding switch in a direction opposite to a direction of depression of the sliding switch, the first and second locking parts release from the housing to follow movement of the sliding switch.
    Type: Grant
    Filed: January 19, 1994
    Date of Patent: June 20, 1995
    Assignee: Preh-Werke GmbH & Co. KG
    Inventors: Ulrich Bruggemann, Gerhard Hochgesang, Hans-Karl Heil
  • Patent number: 5420387
    Abstract: A switch is disclosed comprising a casing member within a carriage member movable therein between first and second positions, the carriage member having a pushable operating member extending outside the casing member. A spring is operative between the casing member and the carriage member for resiliently returning the carriage member to the first position. A cooperative switch is provided on the casing member and the carriage member to perform at least one switching function in response to movement of the carriage member. A latching cam is provided on one of the members. A spring latch is provided on the other member for cooperatively engaging the latching cam.
    Type: Grant
    Filed: February 15, 1994
    Date of Patent: May 30, 1995
    Assignee: Indak Manufacturing Corp.
    Inventor: John G. Cummings
  • Patent number: 5380970
    Abstract: An ON/OFF push button switch is disclosed which includes a housing, a fixed contact fixedly mounted on the housing, and a movable contact adapted to be brought into and out of contact with the fixed contact. An operating portion of the disclosed switch is supported in the housing in which the movable contact is to be movable in a direction towards the fixed contact. A contact connect spring located between the housing and the movable contact is provided to urge the movable contact towards the fixed contact. A contact release spring is located between the housing and the operating portion to urge the operating portion away from the fixed contact with an urging force greater than that of the contact connect spring. A coupling arrangement is provided for releasably coupling the movable contact and the operating portion together with the movable contact being inhibited from being moved away from the operating portion towards the fixed contact.
    Type: Grant
    Filed: March 17, 1993
    Date of Patent: January 10, 1995
    Assignee: Yazaki Corporation
    Inventors: Yoshiyuki Mizuno, Kikuo Ogawa
  • Patent number: 5369237
    Abstract: An electrical switch (1) is proposed on the actuator (4) of which, which can be moved in a housing (2), there are arranged contact bridges (8) which can be brought into contact with break contact surfaces (11) which are located, in turn, in a base (5) secured to the housing (2). Two guide curves (14, 15), which have different configurations and in which a pin (19, 20) respectively engages, are located on two mutually opposite surfaces of the actuator (4) which extend parallel to the direction of actuation. The two pins (19, 20) serving the purpose of the notching are coupled to one another by means of a connecting element (21) which is elastically deformed in sections during the movement by the different guidance of the two pins (19, 20).
    Type: Grant
    Filed: January 27, 1993
    Date of Patent: November 29, 1994
    Assignee: Marquardt GmbH
    Inventors: Thomas Mejerl, Franz Vozeler-Pape
  • Patent number: 5360954
    Abstract: A push button switch, particularly a master switch, has housing-affixed contacts (4, 5) and a contact bridge (8) for bridging the contacts, with the bridge being moved by a spring plunger (10). A spring-switching mechanism (24, 25, 26) is operatively coupled between the spring plunger and a manually-movable sliding switch, or switch actuator, (22). The sliding switch (22) is engaged by a guiding, or sliding, locking linkage (27, 28) to be alternately moved between "on" and "off" positions upon being pushed in.
    Type: Grant
    Filed: January 19, 1994
    Date of Patent: November 1, 1994
    Assignee: Preh-Werke GmbH & Co. KG
    Inventors: Ulrich Bruggeman, Hans-Karl Heil, Gerhard Hochgesang
  • Patent number: 5280148
    Abstract: A damper is provided for a switch mechanism to prevent overtravel in response to a snap-release of a plunger when it is fully depressed. If no precautions are taken to prevent this type of overtravel, springs which urge the plunger away from its base can provide sufficient force to propel the plunger away from the base with sufficient speed and force to cause the plunger to travel past its intended unactuated position. The present invention utilizes a sloped cam surface which acts as a damper to divert the direction of travel of a cam follower relative to a cam and thereby dissipate the kinetic energy of the plunger, button and moveable components attached to the plunger.
    Type: Grant
    Filed: November 6, 1992
    Date of Patent: January 18, 1994
    Assignee: Honeywell Inc.
    Inventor: Leonard D. Cummins
  • Patent number: 5262606
    Abstract: A push-button switch is provided which includes a base plate having terminals extending therethrough and solderable in a p.c. board. A housing is subsequently snap-assembled with the base plate and carries a push-button member which is reciprocable when manually pushed. Cam tracks are provided in the housing and a cam follower lever is pivotally mounted on the push-button member. The lever is accessible through an aperture in the housing for engagement with either of the cam tracks. One of the cam tracks produces momentary action, while the other produces alternate action.
    Type: Grant
    Filed: April 13, 1987
    Date of Patent: November 16, 1993
    Assignee: Illinois Tool Works Inc.
    Inventors: Tony R. Benson, Bruce L. Graham, John C. Jones
  • Patent number: 5262607
    Abstract: A pushbutton switch is provided with a safety mechanism that permits the button and plunger to be depressed following a relamping procedure in order to reset the mechanism without actuating the switch. When the plunger is pulled upward to initiate the relamping procedure, a cam follower is caused to move into a particular location of a cam and any subsequent downward movement of the plunger and cam after the cam follower has moved to that particular location of the cam will cause a protrusion of the cam to move into interfering relation with a protrusion of the base to prevent sufficient downward movement to actuate the switch during the process of resetting the button and plunger into the switch housing. A cam is attached to the plunger of the switch and is provided with the ability to move relative to the plunger in directions generally perpendicular to a first axis of movement which is the normal axis along which the plunger moves during operation.
    Type: Grant
    Filed: November 6, 1992
    Date of Patent: November 16, 1993
    Assignee: Honeywell Inc.
    Inventors: Leonard D. Cummins, Duane C. Shaw
  • Patent number: 5199558
    Abstract: The invention is based on an electric push button switch, especially a hazard-warning-signal switch for motor vehicles. This switch comprises a socket with stationary contacts, a cap-like linearly actuable push button and a slide which is at least partly located inside the push button and is movable in the direction of motion of the push button together with the push button. In order to obtain a compact construction of the electric push button switch, the slide is held on the push button at a distance from a first side wall of the push button and the socket projects into the push button and is substantially located there between the slide and the first side wall of the push button.
    Type: Grant
    Filed: July 19, 1991
    Date of Patent: April 6, 1993
    Assignee: SWF Auto-Electric GmbH
    Inventor: Walter Neubauer
  • Patent number: 5187335
    Abstract: The switch includes a case, first and second manipulation members, two switching mechanisms, cam projections two locking members, guide grooves, and an operating member. The guide grooves for guiding the locking members are arranged so that tip ends of the locking members can be put in contact with the operation member for forcibly returning the manipulation members from a pressed-in position to a released position and that the tip ends are prevented from facing the operation member when the tip ends are located in a normal paths of the guide grooves, thereby preventing deformation of locking members and damages of the cam projections due to an erroneous pressing operation.
    Type: Grant
    Filed: February 19, 1991
    Date of Patent: February 16, 1993
    Assignee: Kabushiki Kaisha Tokai Rika Denki Seisakusho
    Inventors: Takahiko Fukuyama, Satosi Kozawa, Kazuyoshi Ishiguro, Toshiki Akita, Seiji Hori
  • Patent number: 4956529
    Abstract: A compact switch device of the present invention includes a casing having a depressible operating member mounted thereon for slidable movement between an inoperative and an operative position. A switch is mounted on the casing and opens and closes in response to the movement of the operating member. The switch device is spring biased to the inoperative position. A cam is mounted on either the casing or the operating member. A locking pin is mounted on the casing or the operating member not already supporting the cam. A closed loop cam groove includes a retaining portion of a generally V-shape and a convex guide portion spaced from and opposite to the retaining portion. The distal end of the lock pin is engageable in the retaining portion to hold the operating member in the operative position.
    Type: Grant
    Filed: January 25, 1989
    Date of Patent: September 11, 1990
    Assignee: Kabushiki Kaisha Tokai Rika Denki Seisakusho
    Inventor: Hiroshi Ueno
  • Patent number: 4937409
    Abstract: A switch device including a casing, a depressible operating member at least partially mounted within the casing and being movable between a protruding position and a depressed position, a cam member movable between an inoperative and operative position in response to the depression of the operating member, the cam member including a cam groove having a loop-like shape, a return spring for urging the cam member toward the inoperative position, an elongated engaging member having one end mounted on the casing and the other end movably disposed in the cam groove, the other end being lockingly engageable in the cam groove to hold the cam member in both inoperative and operative positions, a cushioning member mounted within the casing, the cushioning member being made of a material having elasticity and a high coefficient of friction, and disposed to abuttingly engage the operating member when the operating member is returned from the depressed position to the protruding position, the cushioning member having a ho
    Type: Grant
    Filed: January 17, 1989
    Date of Patent: June 26, 1990
    Assignee: Kabushiki Kaisha Tokai Rika Denki Seisakusho
    Inventor: Fujio Hayashi
  • Patent number: 4931607
    Abstract: A pushbutton switch which is convertible to operate as a momentary switch or as a latching switch has a tubular housing for a reciprocable plunger which is movable between an extended and a depressed position and is biased to extended position. The plunger carries a cam which is tracked by a pendulum-type follower coupled to a leaf spring which is shiftable in the housing between a first position and a second position. When the leaf spring is held in the first position, the follower cooperates with the cam to ensure that the switch acts as a momentary switch, namely the plunger is free to reassume its extended position as soon as the force which has caused depression of the plunger is terminated or relaxed. If the leaf spring is shifted to the second position, the follower holds the plunger and the cam in or close to the depressed position. It is then necessary to depress the plunger a second time before the plunger can return to the extended position.
    Type: Grant
    Filed: January 24, 1989
    Date of Patent: June 5, 1990
    Assignee: Elektro-Apparatebau Olten AG
    Inventor: Fritz Berger
  • Patent number: 4916276
    Abstract: A push lock mechanism including a heart-shaped cam groove, a driving pin adapted to trace in the heart-shaped cam groove, and an axially reciprocatable operation shaft adapted to be locked in a depressed position thereof by cooperation of the heart-shaped cam groove and the driving pin.
    Type: Grant
    Filed: June 9, 1988
    Date of Patent: April 10, 1990
    Assignee: Alps Electric Co.,
    Inventor: Shiniji Sasaki
  • Patent number: 4916277
    Abstract: An alternate action mechanism having a housing with first and second transverse walls enclosing a snap-acting switch accessible through a hole in the first wall. An actuator includes a plunger disposed in the hole for operating the switch and a guide structure slidable along the exterior surface of the second wall. A cam formed on the second wall cooperates with a follower carried by the guide structure to alternately retain the plunger in and release it from a depressed position upon successive depressions.
    Type: Grant
    Filed: September 29, 1988
    Date of Patent: April 10, 1990
    Assignee: Honeywell Inc.
    Inventor: Daniel E. Tretter
  • Patent number: 4891475
    Abstract: A "hi/lo" headlight beam selector switch system having a "flash-to-pass" mode, including a terminal block having a back panel with a set of profiled terminal pads mounted thereon, at least one, linearly movable carrier having on its side facing the pads at least one contactor having multiple contact dimples thereon, the dimples being drawn linearly across the back panel interconnecting two or more pads as the carrier(s) move(s) along side them. In a first embodiment (FIGS. 1-3B) two separable carriers, the lower, "hi beam" one of which can be latched down in place, have two return springs, a weaker one positioned between them and a stronger one under the bottom of the "hi beam" carrier; while in a second embodiment (FIGS. 4 & 5) a single carrier working with only three terminal pads compared with four pads is used.
    Type: Grant
    Filed: October 24, 1988
    Date of Patent: January 2, 1990
    Assignee: United Technologies Automotive, Inc.
    Inventors: Jeffrey K. Wiersing, Stephen R. Christian
  • Patent number: 4877931
    Abstract: A switch mechanism for visually indicating whether the switch is turned on or off includes a button having a hole and being depressable to turn the switch on or off. A rotatable indicator includes a first color portion that is positioned in the opening when the switch is turned on and a second color portion that is positioned in the opening when the switch is turned off. An indicator controller is coupled to the button and the indicator and carries the contacts for the switch. The indicating controller moves the indicator to position the proper colored portion in the opening in response to the opening and closing of the switch contacts by the depression of the button.
    Type: Grant
    Filed: August 5, 1988
    Date of Patent: October 31, 1989
    Assignee: Kabushiki Kaisha Tokai Rika Denki Seisakusho
    Inventors: Toshihiro Kawase, Sachiya Sano
  • Patent number: 4870229
    Abstract: A switch device including a first switch, a first push-button assembly having a push surface and disposed to alternately turn on and off the first switch in response to a push force, a first spring for urging the first push-button assembly in a direction opposite the push force, a locking device including a spring and a cam for locking said first push-button assembly in a pushed-in position, a second switch, a second push-button assembly having a push surface and disposed to turn on the second switch-in response to a push force, a second spring for urging the second push-button assembly in a direction opposite the second push force, and a lug for preventing the locking device from unlocking in response to an inadvertent push force.
    Type: Grant
    Filed: November 28, 1988
    Date of Patent: September 26, 1989
    Assignee: Kabushiki Kaisha Tokai Rika Denki Seisakusho
    Inventors: Toshihiro Kawase, Sachiya Sano
  • Patent number: 4843192
    Abstract: A push-button switch having an individual and interlocking action is provided which includes two operating members. The push-button switch comprises first and second sliders, each having a heart-shaped cam groove formed thereon. Actuator pins are provided for engagement with the cam grooves to provide the desired individual and interlocking action. The interlocking action is effectuated when the first slider is depressed while the second slider is locked at its depressed position. The invention allows the second slider to return to its unlocked nondepressed position while the first slider then becomes locked in its depressed position. The push-button switch has high versatility since the distance between the sliders can be easily changed. Further, common parts can be used individually for the sliders thus improving manufacturing efficiency.
    Type: Grant
    Filed: January 25, 1988
    Date of Patent: June 27, 1989
    Assignee: Alps Electric Co., Ltd.
    Inventors: Soetsu Kamada, Yujiro Shimoyama
  • Patent number: 4795860
    Abstract: A push switch comprises first and second push/lock mechanisms, and first and second switch units. The operating members of the first and second push/lock mechanisms are disposed opposite to the corresponding levers of the first and second switch units. A first driving pin whose one end is secured to the slider of the first switch unit is pressably engaged at the other end with cam member of the second push/lock mechanism, whereas a second driving pin whose one end is secured to the slider of the second switch unit is pressably engaged at the other end with the cam member of the first push/lock mechanism.
    Type: Grant
    Filed: August 25, 1987
    Date of Patent: January 3, 1989
    Assignee: Alps Electric Co., Ltd.
    Inventors: Soetsu Kamada, Akinori Ito