Patent Application
20080156629
1. Field of the Invention
The present invention relates to an electrical switching device having an actuating handle and a contact carrier in which actuation of the actuating handle causes the contact carrier to displace between end positions with each end position being associated with a respective contact on a printed circuit board.
2. Background Art
Such a switching device is used in a vehicle to switch over electrical potentials of devices such as drive motors for electrically driven window lifts, sliding roofs or seats, lighting devices, and the like. The switch over process is performed in a so-called keyed actuation in which the actuating handle and contact carrier return to their original position after actuation. The duration of the switch over process is a function of the actuation speed.
An object of the present invention includes an electrical switching device having an actuating handle and a contact carrier in which the electrical switch over process associated with displacement of the contact carrier occurs independently of the actuation speed of the actuating handle.
In carrying out the above object and other objects, the present invention provides a switching device having an actuating handle, a restoring mechanism, a contact carrier, and a rocker arm. The actuating handle is rotatable about a rotation axis to be movable upward and downward. The actuating handle moves downward in response to being actuated. The restoring mechanism is movable upward and downward. The restoring mechanism is biased with an elastic force to move upward. The actuating handle engages and forces the restoring mechanism to move downward in response to being actuated. The contact carrier is displaceable between first and second positions. The rocker arm is rotatable about a swivel axis parallel to the rotation axis of the actuating handle. An end of the rocker arm facing away from the swivel axis is engaged with the contact carrier. The restoring mechanism cooperates with the rocker arm such that during downward movement of the restoring mechanism the restoring mechanism abruptly swivels the rocker arm in a first swivel direction about the swivel axis thereby causing the rocker arm to abruptly displace the contact carrier from the first position to the second position and such that during upward movement of the restoring mechanism the restoring mechanism abruptly swivels the rocker arm in a second opposite swivel direction about the swivel axis thereby causing the rocker arm to abruptly displace the contact carrier back to the second position from the first position.
Further, in carrying out the above object and other objects, the present invention provides a switching device having a handle, first and second rods, first and second carriers, and first and second rockers. The handle is rotatable about a rotation axis. A first end of the handle moves downward from a neutral position in response to the handle being pulled. An opposite second end of the handle moves downward from the neutral position in response to the handle being pressed. The irst rod is adjacent to the first end of the handle and is movable upward and downward relative to the first end of the handle. The first rod is biased with an elastic force to move upward. The second rod is adjacent to the second end of the handle and is movable upward and downward relative to the second end of the handle. The second rod is biased with an elastic force to move upward. The first carrier is displaceable between first and second positions. The second carrier is displaceable between first and second positions. The first rocker is adjacent to the first rod and is rotatable about a first swivel axis parallel to the rotation axis of the handle. An end of the first rocker facing away from the first swivel axis is engaged with the first carrier. The second rocker is adjacent to the second rod and is rotatable about a second swivel axis parallel to the rotation axis of the handle. An end of the second rocker facing away from the second swivel axis is engaged with the second carrier.
The first end of the handle engages and forces the first rod to move downward while the first end of the handle moves downward in response to the handle being pulled. The first rod cooperates with the first rocker such that during downward movement of the first rod the first rod abruptly swivels the first rocker in a first swivel direction about the first swivel axis thereby causing the first rocker to abruptly displace the first carrier from the first position to the second position and such that during upward movement of the first rod the first rod abruptly swivels the first rocker in a second opposite swivel direction about the first swivel axis thereby causing the first rocker to abruptly displace the first carrier back to the second position from the first position. During upward movement of the first rod when the pulling of the handle ceases, the first rod engages and forces the first end of the handle to move upward back to the neutral position.
Similarly, the second end of the handle engages and forces the second rod to move downward while the second end of the handle moves downward in response to the handle being pressed. The second rod cooperates with the second rocker such that during downward movement of the second rod the second rod abruptly swivels the second rocker in a first swivel direction about the second swivel axis thereby causing the second rocker to abruptly displace the second carrier from the first position to the second position and such that during upward movement of the second rod the second rod abruptly swivels the second rocker in a second opposite swivel direction about the second swivel axis thereby causing the second rocker to abruptly displace the second carrier back to the second position from the first position. During upward movement of the second rod when the pressing of the handle ceases, the second rod engages and forces the second end of the handle to move upward back to the neutral position.
The second rod remains in place while the first rod is moving upward or downward. Similarly, the first rod remains in place while the second rod is moving upward or downward.
In an embodiment, the restoring mechanism for the actuating handle includes a spring-loaded push rod. The push rod is perpendicularly movable relative to the contact carrier. The push rod cooperates with a rocker arm. The rocker arm is supported so as to be rotatable about a swivel axis. The end of the rocker arm facing away from the swivel axis is engaged to the contact carrier. During downward movement of the push rod, which occurs in response to actuation of the actuating handle, the push rod causes the rocker arm to abruptly swivel. This abrupt swiveling of the rocker arm causes the abrupt displacement of the contact carrier from a first end position to a second end position as a result of the rocker arm being engaged to the contact carrier. During upward movement of the push rod, which occurs in response to the actuation of the actuating handle ceasing, the push rod pushes the actuating handle back to its starting position and causes the rocker arm to abruptly swivel in an opposite swivel direction. This opposite abrupt swiveling of the rocker arm causes the abrupt displacement of the contact carrier back to the first end position from the second end position.
Referring now to
A first restoring mechanism including a first spring-loaded push rod 2a is associated with actuating handle 1. A function of push rod 2a is to move actuating handle 1 back to its neutral starting position from its first end position after the pulling of actuating handle 1 ceases. Similarly, a second restoring mechanism including a second spring-loaded push rod 2b is associated with actuating handle 1. A function of push rod 2b is to move actuating handle 1 back to its neutral starting position from its second end position after the pressing of actuating handle 1 ceases.
Push rod 2a is located underneath the rear end of actuating handle 1 as shown in
The shifting device further includes first and second contact carrier elements 3a, 3b. First contact carrier 3a is actuated in response to actuating handle 1 being pulled. Conversely, second contact carrier 3b is actuated in response to actuating handle 1 being pressed. Other than the actuation of actuating handle 1 being different (i.e., pulling and pressing) for respectively actuating contact carriers 3a, 3b, the control for the two actuations of the contact carriers is performed in the same manner.
First contact carrier 3a is mounted in a linear guide 4. First contact carrier 3a may perform a limited linear motion in linear guide 4 to the right and left between two opposite limiting positions. The limiting positions respectively correspond to left and right neutral end positions of first contact carrier 3a. First contact carrier 3a includes three sliding contact bridges 8a, 9a, 10a on its underside. Each contact bridge 8a, 9a, 10a is a multi-finger wiper.
In the left end position of first contact carrier 3a (shown in
Similarly, second contact carrier 3b is mounted in linear guide 4 and may perform a limited linear motion in linear guide 4 to the right and left between two opposite limiting positions respectively corresponding to left and right neutral end positions. Second contact carrier 3b includes three sliding contact bridges 8b, 9b, 10b on its underside. Each contact bridge 8b, 9b, 10b is a multi-finger wiper. Bridges 8b, 9b, 10b respectively span an additional set of first pairs of PCB contacts in the left end position of second contact carrier 3b and respectively span an additional set of second pairs of PCB contacts in the right end position of second contact carrier 3b. Again, each PCB contact is a contact surface on PCB 7 which is also used as a lower slide bearing for second contact carrier 3b. The additional set of the first pairs of PCB contacts are electrically insulated from the additional set of the second pairs of PCB contacts. The additional first pairs of PCB contacts respectively contact the contact bridges 8b, 9b, 10b when second contact carrier 3b is in the left end position. The additional second pairs of PCB contacts respectively contact the contact bridges 8b, 9b, 10b when second contact carrier 3b is in the right end position. Three separate electrical potentials may thus be simultaneously switched over by displacing second contact carrier 3b between its two neutral end positions.
Pulling or pressing actuating handle 1 causes actuating handle 1 to perform a corresponding rotation motion about a rotational axis. The rotational axis is formed by a bearing 1′ for an axle neck 14 of actuating handle 1. Bearing 1′ is in corresponding openings in an upper housing part 11 of a housing. The housing accommodates the components of the switching device and is closed off on its lower side by a lower housing part 12. Actuating handle 1 performs a first rotation motion about its rotational axis in response to the front end of actuating handle 1 being pulled upward along the first direction. In particular, the rear end of actuating handle 1 moves downward from its neutral starting position. Actuating handle 1 performs a second rotation motion about its rotational axis in response to the front end of actuating handle 1 being pressed downward along the second direction. In particular, the front end of actuating handle 1 moves downward from its neutral starting position.
In regards to the pulling of actuating handle 1, the rear end of actuating handle 1 engages and moves push rod 2a downward against the opposing elastic force of push rod 2a. A locking contour 2a′ on the longitudinal side of push rod 2a slides along a spring-loaded stop bolt 6a. Stop bolt 6a is in a sleeve of a rocker arm 5a. Rocker arm 5a is supported in upper housing part 11 so as to be rotatable about a swivel axis oriented parallel to the rotational axis of actuating handle 1. At its lower end facing away from this swivel axis, rocker arm 5a is engaged to first contact carrier 3a. Rocker arm 5a abruptly swivels about its swivel axis with relaxation of the spring of stop bolt 6a as soon as the vertex of locking contour 2a′ of push rod 2a passes the tip of stop bolt 6a during the downward motion of push rod 2a. First contact carrier 3a, which is in its left end position and is engaged with the end of rocker arm 5a, is abruptly moved to its right end position as a result of this swivel motion of rocker arm 5a. First contact carrier 3a remains in the right end position as long as the front end of actuating handle 1 is pulled and actuating handle 1 is in its first end position.
When the pulling of actuating handle 1 ceases, the downward force from the rear end of actuating handle 1 acting on push rod 2a also ceases. As a result, the elastic force of push rod 2a acts upwardly on the rear end of actuating handle 1 to thereby move actuating handle 1 back to its neutral starting position. During this upward motion of push rod 2a, the tip of stop bolt 6a once again passes the vertex of locking contour 2a′ such that rocker arm 5a performs another abrupt swivel motion about its swivel axis with relaxation of the spring of stop bolt 6a. This swivel motion of rocker arm 5a is in an opposite direction to the swivel motion when actuating handle 1 is pulled. First contact carrier 3a is abruptly returned from its right end position, in the same manner as for the other direction, to its original left end position in response to this swivel motion of rocker arm 5a.
In regards to the pressing of actuating handle 1, the front end of actuating handle 1 engages and moves push rod 2b downward against the opposing elastic force of push rod 2b. A locking contour on the longitudinal side of push rod 2b slides along a spring-loaded stop bolt 6b. Stop bolt 6b is in a sleeve of a rocker arm 5b. Rocker arm 5b is supported in upper housing part 11 so as to be rotatable about a swivel axis oriented parallel to the rotational axis of actuating handle 1. At its lower end facing away from this swivel axis, rocker arm 5b is engaged to second contact carrier 3b. Rocker arm 5b abruptly swivels about its swivel axis with relaxation of the spring of stop bolt 6b as soon as the vertex of the locking contour of push rod 2b passes the tip of stop bolt 6b during the downward motion of push rod 2b. Second contact carrier 3b, which is in an end position and is engaged with the end of rocker arm 5b, is abruptly moved to its other end position as a result of this swivel motion of rocker arm 5b. Second contact carrier 3b remains in its other end position as long as the front end of actuating handle 1 is pressed and actuating handle 1 is in its second end position.
When the pressing of actuating handle 1 ceases, the downward force from the front end of actuating handle 1 acting on push 2b also ceases. As a result, the elastic force of push rod 2b acts upwardly on the front end of actuating handle 1 to thereby move actuating handle 1 back to its neutral starting position. The elastic force against push rod 2b causes push rod 2b to push actuating handle 1 back to its neutral starting position. During this upward motion of push rod 2b, the tip of stop bolt 6b once again passes the vertex of the locking contour of push rod 2b such that rocker arm 5b performs another abrupt swivel motion about its swivel axis with relaxation of the spring of stop bolt 6b. This swivel motion of rocker arm 5b is in an opposite direction to the swivel motion when actuating handle 1 is pressed. Second contact carrier 3b is abruptly returned from its other end position, in the same manner as for the other direction, to its original end position in response to this swivel motion of rocker arm 5b.
As such, the displacement of second contact carrier 3b, and therefore also of contact bridges 8b, 9b, 10b connected thereto, which occurs when actuating handle 1 is pressed takes place in the same manner via push rod 2b and rocker arm 5b as the displacement of first contact carrier 3a via push rod 2a and rocker arm 5a when actuating handle 1 is pulled. When one of the pull or press functions is actuated, the transmission elements associated with the respective other actuating direction remain at rest such that contact carrier 3a or 3b associated with the non-actuated function is securely held in its respective original end position.
In order to connect the switching device to the chassis electrical system, the electrical system includes a plug-in connector whose contact pins 13 on are electrically connected to PCB 7 and enclosed by a collar of lower housing part 12.
While embodiments of the present invention have been illustrated and described, it is not intended that these embodiments illustrate and describe all possible forms of the present invention. Rather, the words used in the specification are words of description rather than limitation, and it is understood that various changes may be made without departing from the spirit and scope of the present invention.
| Number | Date | Country | Kind |
|---|---|---|---|
| 10 2005 046 801.2 | Sep 2005 | DE | national |
This is a continuation of International Application PCT/EP2006/009426, published in German, with an international filing date of Sep. 28, 2006, which claims priority to DE 10 2005 046 801.2, filed Sep. 30, 2005, the disclosures of which are both hereby incorporated by reference.
| Number | Date | Country | |
|---|---|---|---|
| Parent | PCT/EP2006/009426 | Sep 2006 | US |
| Child | 12012596 | US |
