JPH0446344Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Purpose of the Invention] (Industrial Application Field) The present invention relates to a motor control switch device suitable for use in motors of automobile power window regulators, power sunroofs, power curtains, and the like.

(Prior Art) Conventionally, for example, in a power window regulator for an automobile, a knob is provided in the case to which a return force is always applied to return to the original position, and by pressing the knob from the original position, the first It is configured to be able to be operated in two stages so that it can be rotated to a second operating position by rotating it to the second operating position and then being further pressed,
A motor switch is provided which is turned on when the knob is operated to either the first or second operating position to form a forward rotation circuit or a reverse rotation circuit of the motor to open or close the window glass, , a holding switch is provided which energizes a coil of an electromagnet that is turned on when the knob is operated to the second operating position to attract and hold the knob in the second operating position; When operated to the operating position 1, the window glass is moved in the opening or closing direction only during the operation,
When the knob is operated to the second operating position, the window glass is held until it is fully open or fully closed even if the operating force on the knob is released. When the window glass is fully open or fully closed, the motor that drives it becomes locked, so conventionally, shape memory alloys that self-heat and return to their memorized shape are supplied with the lock current when the motor is locked. It has been proposed that a return member made of aluminum is provided, and the return force of the return member to the memorized shape causes the knob to return to its original position against the attraction and holding force of an electromagnet.

(Problems to be Solved by the Invention) In the above configuration, it is necessary to use an electromagnet to hold the knob in the second operating position, which increases the cost and consumes more power. .

The present invention has been developed in view of the above circumstances, and its purpose is to return an operating member to its original position when the motor is locked, and it does not require the use of an electromagnet and can be done at low cost.
To provide a motor control switch device that consumes less power.

[Structure of the invention] (Means for solving the problem) The motor control switch device of the invention includes a case having a fixed contact and a swinging blade having a movable contact that cooperates with the fixed contact to form a switch. The original position and the first and second positions are movably provided in the case.
An operating member is provided between the operating position of the switch and the switch so as to be operable in two stages, and a pressing force is applied to the blade to normally urge the operating member to its original position to separate the movable contact of the switch from the fixed contact. The operation of the pressure contact causes the blade to swing to bring the movable contact of the switch into the on state in contact with the fixed contact when the operating member is operated to the first and second operating positions. the blade is provided with an inclined part and a holding part, and the operating force is released after the operating member is operated to the first operating position through cooperation of the inclined part and the holding part and the pressure contact. return the operating member to its original position when
and when the operating member is operated from the first operating position to the second operating position, the operating member is moved to its second operating position.
A return member made of a shape memory alloy is provided in the case to which a current is supplied to the motor through the switch, and the return member is self-reset by the locking current of the motor. The device is characterized in that the operating member is configured to return from the second operating position to the first operating position and back to the original position by heating and returning to the memorized shape.

(Function) According to the motor control switch device of the present invention,
When the operating member is operated to the second operating position, the operating element is held at the second operating position by the cooperation of the pressure contact and the holding part, and the switch is maintained in the on state, so that the motor rotation is prevented. can continue, and therefore there is no need to use an electromagnet to hold the operating member in the second working position, and
The return of the operating member from the second working position to its original position is accomplished by the return member being self-heated by the locking current of the motor and returning to its memorized shape.

(Embodiment) A first embodiment in which the present invention is applied to a power window regulator switch device for an automobile will be described below with reference to FIGS. 1 to 8.

Reference numeral 1 denotes a plastic case having a substantially rectangular cylindrical shape with both upper and lower ends open, and an insulator 2 constituting a part of the case 1 is attached so as to close the lower end. This insulator 2
Blade holders 3, 4 are fixed approximately at the center of the blade holders 3, 4, and fixed contacts 5, 6 and 7, 8 are provided on both sides of the blade holders 3, 4. The blade holder 3 swingably supports a blade 11 having movable contacts 9 and 10 at both ends that can be moved into and out of contact with the fixed contacts 5 and 6. In addition, the blade holder 4 has movable contacts 1 at both ends that can connect to and separate from the fixed contacts 7 and 8.
A blade 14 having blades 2 and 13 is swingably supported. The fixed contact 5 and the movable contact 9, the fixed contact 6 and the movable contact 10 constitute the first and second switches 15 and 16, and the fixed contact 7 and the movable contact 12 and the fixed contact 8 and the movable contact 13 constitute the first and second switches 15 and 16, respectively. Third and fourth switches 17 and 18 are constructed. A knob 20 as an operating member is rotatably provided at the upper end of the case 1 via a pin 19, and an operating section 21 that projects downward is integrally formed in the center of the knob 20. Holes 21a and 21b that open downward are provided in the holes 21a and 21b, and pressure contacts 22 and 23 and coil springs 24 and 24 are disposed in these holes 21a and 21b, and the biasing force of each coil spring 24 and 24 biases one pressure contact. 22 is pressed against the blade 11, and the other pressure contact 23 is pressed against the blade 14 at its end. blade 1
Recesses 11a and 14a are provided in the central portions of 1 and 14, respectively, and these recesses 11a and 14a are sloped portions 11 that are lowest at the center and become higher toward both sides.
Convex portions 11c, 11c and 14c, 14c, which serve as holding portions, are formed at the outer ends of these inclined portions 11b, 11b and 14b, 14b. Therefore, when the knob 20 is in the original position shown in FIGS.
a, 14a is in pressure contact with the deepest part of the parts. At this time, the movable contact 10 of the blade 11 is in contact with the fixed contact 6, the movable contact 9 is in a state separated from the fixed contact 5, and the movable contact 12 of the blade 14 is in contact with the fixed contact 7, and the movable contact 1
3 is in a state separated from the fixed contact 8,
The first and fourth switches 15 and 18 are in the off state, and the second and third switches 16 and 17 are in the on state. Reference numerals 25 and 26 indicate return coil springs which are return members made of shape memory alloy. These springs memorize the expanded shape in advance, and when heated in the contracted state, they automatically return to the expanded state as the memory shape. It is designed to return to its original state, and of course also has spring properties. These return coil springs 25 and 26 are disposed between the right and left ends of the knob 5 and the insulator 2, and their respective upper ends are connected to holding protrusions protruding from the lower surface of the knob 20. The lower end portions are inserted and held in the recesses 2a and 2b formed in the insulator 2. Straight portions 25a extending from the upper ends of the return coil springs 25 and 26,
26a is a slit-shaped hole 1 provided in the case 1;
straight portions 25b and 26b extending to the lower ends of the return coil springs 25 and 26 are connected to the insulator 2.
It penetrates through holes 2c and 2d provided in and is led out to the outside.

Now, the configuration of the electric circuit will be described according to FIG. Reference numeral 27 denotes a two-brush type motor for driving a power window regulator of an automobile, which has a forward rotation terminal 27a and a reverse rotation terminal 27b. When reversely rotated, the window glass is moved upward to close it, and the forward rotation terminal 27a is connected to the blade holder 4.
is connected to the blade 14 via the reversing terminal 27
b is connected to the blade 11 via the blade holder 3. Reference numeral 28 denotes a battery as a DC power source, the negative terminal of which is grounded, and the positive terminal connected to each straight portion 25a, 2 of the return coil springs 25, 26.
6a. The straight portion 25b of the return coil spring 25 is connected to the fixed contact 5, the straight portion 26b of the return coil spring 26 is connected to the fixed contact 8, and the fixed contacts 6 and 7 are each grounded.

Next, the operation of this embodiment will be explained. 1st
As shown in the figure and FIG. 2, when the left end of the knob 20 located at the original position is pressed and the knob 20 is rotated in the direction of arrow A, the pressure contacts 22 and 23 engage the coil springs 24 and 24. Blade 1 while shrinking
Each inclined portion 11 of the concave portions 11a and 14a of 1 and 14
b, 14b, and then the tips of the pressure contacts 22, 23 touch the convex parts 11c, 14c.
The knob 20 comes into contact with the knob 20 and gives a feeling of resistance, so that the knob 20 is in the first operating position on the closing side (see FIGS. 6 and 7). At this time, the return coil spring 25 is also pressed and compressed by the knob 20. When the knob 20 is operated to the first operating position in this manner, the blade 11 rotates in the direction of arrow B around the blade holder 3, and the movable contact 10 is separated from the fixed contact 6 and moved to the second operating position. switch 1
6 is turned off, the movable contact 9 comes into contact with the fixed contact 5, and the first switch 15 for lifting is turned on. At this time blade 1
4 does not change its state, and the third switch 17 continues to be on. Therefore, motor 2
7 is connected to the positive terminal 28a of the battery 28 via the first switch 15,
The normal rotation terminal 27a is connected to the negative terminal 28b of the battery 28 via the third switch 17, and the motor 27 rotates in the reverse direction to raise the window glass, thereby performing a closing operation. after that,
When the pressing operation force on the knob 20 is released, the pressure contact 22 receives the spring force of the coil springs 24, 24.
23 and the inclined portions 11b, 14 of the recesses 11a, 14a.
b, the pressure contacts 22, 23 slide down the inclined portions 11b, 14b, and the knob 20 is rotated back in the opposite direction of arrow A to the first position.
The motor 27 returns to the original position shown in FIGS. 2 and 2, the first switch 15 for lifting is turned off, the second switch 16 for braking is turned on, and the motor 27 is stopped. At this time, the return coil spring 25 also returns to the expanded state by its own spring force. Through the above steps, the window glass is stopped at the desired position.

Now, move the knob 20 to the first position shown in FIGS. 6 and 7.
When the pressure contacts 22 and 23 are rotated in the direction of the arrow A by pressing further than the operating position of the blade 1
The knob 20 moves over the protrusions 11c and 14c of No. 1 and 14 and is locked to the right side of the protrusions 11c and 14c (see FIG. 8), and the knob 20 is in the second operating position on the closing side. At this time, the return coil spring 25 is pressed by the knob 20 and is reduced and deformed.
The locking force is set to be larger than the return spring force of the return coil spring 25, and the knob 20 is held in the second operating position, and the motor 27 is rotated in the reverse direction in the same manner as described above. The window glass will now rise. After that, when the window glass reaches the highest position and is fully open, the motor 27
is locked and a large locking current begins to flow through the motor 27, and this locking current also flows to the return coil spring 25, causing the return coil spring 25 to generate heat and self-heat. . When the returning coil spring 25 reaches a predetermined temperature due to this self-heating, the returning coil spring 25 returns to the expanded state shown in FIG. 1, which is the memorized shape. The return force is the convex portions 11c and 14c of the pressure contacts 22 and 23.
The locking force is set to be larger than the locking force for the Therefore, the pressure contacts 22 and 23 have the convex portions 11c,
14c is forcibly released and the recess 11a,
The knob 20 slides down the slopes 11b and 14b of the knob 14a and returns to its original position from the second working position, through the first working position, and the first switch 15 for raising is turned off, and instead The second brake switch 16 is turned on and the motor 27 is braked in the same manner as described above.

The above description is about the case in which the window glass is raised by rotating the knob 20 in the direction of arrow A. However, by pressing the right end of the knob 20, the knob 20 is rotated in the opposite direction of arrow A. In this case, the operation is performed based on the same principle. That is, when the right end of the knob 20 is pressed, the pressure contacts 22 and 23 ride on the slopes 11b and 14b of the recesses 11a and 14a, and then come into contact with the protrusions 11c and 14c, and the knob 20 is moved to the open side. It is in the first working position.
Furthermore, when the right end of the knob 20 is pressed, the pressure contacts 22 and 23 go over the convex parts 11c and 14c and are locked on the left side of the protrusions 11c and 14c, and the knob 20 is moved to the second working position on the open side. Become. When the knob 20 is operated to either the first or second operating position, the return coil spring 26 is pressed and contracted by the knob 20, and
The blade 14 is swung in the direction of arrow C by the pressure contact 23, and the movable contact 12 is separated from the fixed contact 7, and the movable contact 13 comes into contact with the fixed contact 8 instead, and the third switch 17 is turned on. The switch is turned off, and the fourth switch 18 for lowering is turned on.
Therefore, regardless of whether the knob 20 is located at the first position or the second position, the power source of the battery 28 is connected via the return coil spring 26 between the forward rotation terminal 27a and the reverse rotation terminal 27b of the motor 27. A voltage is applied, and the motor 27 rotates forward to lower the window glass, thereby performing an opening operation. In this case, when the knob 20 is in the first operating position, if the pressing operation force on the knob 20 is released, the knob 20
0 indicates the inclined portions 11b and 14b and the coil springs 24 and 2.
4 and pressure contacts 22 and 23 to return to the original position and turn off the fourth lifting switch 18. However, when the knob 20 is in the second operating position on the closing side, the knob 20 Even if the pressing operation force for the knob 20 is released, the pressure contacts 22 and 23 are
1c and 14c, the fourth switch 18 remains in the ON state as it is held in the second working position, and then when the window glass reaches the lowest position and is fully open, the motor 27 is turned on. The motor 27 and the return coil spring 2 are locked and stopped.
6, the return coil spring 26 automatically returns to the extended state, and the knob 2
0 returns from the second working position to the first working position and returns to the original position, the fourth switch 18 is turned off, and the third switch 17 is turned on instead, and the motor 27 is turned on.
is braked. Incidentally, when the right end of the knob 20 is operated and rotated in the opposite direction of arrow A, the blade 11 is not swung, the first switch 15 is off and the second switch 16 is on.

In this way, according to this embodiment, the knob 20 is
The protrusions 11c and 14c that engage with the pressure contacts 22 and 23 are held in the working position of the blades 11 and 1.
4, and shape memory alloy return coil springs 25 and 26 are interposed between the right and left ends of the knob 20 and the bottom wall of the insulator 2, respectively,
Since the current flowing to the motor 27 is supplied to these return coil springs 25 or 26, when the window glass is fully open or fully closed and the motor 27 is locked, the return coil springs 25 or 26 is self-heated by the lock current and returns to the expanded state of the memorized shape.
The knob 20 is automatically returned to its original position against the locking force applied to the knob 20.
Unlike the conventional method, it is not necessary to use an electromagnet to hold the device at the second operating position, and the device can be manufactured at a correspondingly low cost, and there is an advantage that power consumption can be reduced by not using an electromagnet.

FIG. 9 shows a second embodiment of the present invention,
Only the parts that are different from the first embodiment will be explained. 29
is a three-brush type motor for driving a power window regulator, which has a forward rotation terminal 29a, a reverse rotation terminal 29b, and a common terminal 29c.
The reverse rotation terminal 29b is connected to the blade 11 via the blade holder 3, the normal rotation terminal 29a is connected to the blade 14 via the blade holder 4, and the common terminal 29c is grounded. The fixed contacts 6 and 7 are each open. In this device, when the knob 20 is turned in the direction of arrow A and the first switch 15 is turned on,
When the motor 29 is reversed and the window glass is raised in the same manner as in the first embodiment, and when the knob 20 is turned in the opposite direction of arrow A and the fourth switch 18 is turned on, the motor 29 is rotated in the forward direction. Then, the window glass is lowered in the same manner as in the first embodiment.
In this embodiment, the operation of energizing and disconnecting the motor 29 as the knob 20 rotates is the same as in the first embodiment, and the braking operation when the power is cut off is omitted. Therefore, this embodiment also provides the same effects as the first embodiment.

FIGS. 10 and 11 show a third embodiment of the present invention, and only the parts different from the first and second embodiments will be explained. A substantially U-shaped blade holder 30 is provided in place of the blade holder 3,
Blade holder 4, fixed contacts 7, 8, blade 1
4, the third and fourth switches 17 and 18, and the pressure contact 23 are removed. And Batsuteri 28
The positive terminal 28a is connected to the blade 11 via the blade holder 30, and the negative terminal 28b is connected to the blade 11 through the blade holder 30.
is grounded. The fixed contact 5 is connected to the reversing terminal 29b of the motor 29 via the return coil spring 25, and the fixed contact 6 is connected to the reversing terminal 29a of the motor 29 via the return coil spring 26. In this device, when the knob 20 is in the original position as shown in FIG. 10, the movable contacts 9 and 10 are separated from the fixed contacts 5 and 6, respectively, and the first and second switches 15 and 16 are turned off. exhibiting a condition. And in this one knob 20
When the knob 20 is rotated in the direction of the arrow A or counter-arrow A and positioned at the first working position, the motor 29 rotates forward or backward, and when the knob 20 is further rotated from the first working position, the pressure contact 22 is engaged with the convex portion 11c and the second
When the rotation of the motor 29 is locked in this state, the locking current flows through the return coil spring 25 or 26, which generates heat and returns to the memorized shape, causing the knob 20 to return to its memorized shape. Since it returns from position 2 to the original position shown in Figure 10,
The same effects as in the embodiment are achieved.

The above embodiments describe the case where the present invention is applied to a power window regulator switch device, but the present invention is not limited to this and can be applied to all motor control switch devices such as a power sunroof switch device and a power curtain switch device. It can be applied to

[Effects of the invention] As explained above, the present invention provides a motor control switch device that returns the operating member from the second operating position to the first operating position and back to the original position when the motor is locked. In this case, the knob is held in the second working position by the engagement between the pressure contact and the holding part provided on the blade, and a current flowing through the motor is supplied to the return member made of a shape memory alloy to lock the motor's current. The return member returns to the memorized shape by self-heating, and the return of the return member moves the knob from the second operating position to the first operating position.
Since the device is returned to the original position after passing through the operating position, unlike the conventional method, there is no need for a holding electromagnet, and this provides excellent effects such as less power consumption.

[Brief explanation of the drawing]

1 to 8 show a first embodiment of the present invention, and FIGS. 1 and 2 respectively show the -
3 is a plan view, 4 is an exploded perspective view, 5 is an electric circuit diagram,
Figures 6 and 7 are views equivalent to Figures 1 and 2 showing working conditions different from Figures 1 and 2, and Figure 8 is a view equivalent to Figure 1 showing working conditions different from Figure 6. be. FIG. 9 is an electric circuit diagram showing a second embodiment of the present invention, and FIGS. 10 and 11 show a third embodiment of the present invention. FIG.
The figure is an electrical circuit diagram. In the drawing, 1 is a case, 2 is an insulator (case), 5 to 8 are fixed contacts, 9, 10 and 12,
13 is a movable contact, 11 and 14 are blades, 11
c, 14b are inclined parts, 11c, 14c are convex parts (holding parts), 15 to 18 are first to fourth switches,
20 is a knob, 22 and 23 are pressure contacts, 25 and 26 are return coil springs (return members), and 27 and 29 are motors.

Claims (1)

[Scope of utility model registration request] a case having a fixed contact; a blade having a movable contact that is swingably provided in the case and cooperates with the fixed contact to configure a switch; and a blade having an original position and a first and second operating position in the case. an operating member provided in between so as to be operable in two stages; and an operating member provided on this operating member that applies a pressing force to the blade to normally urge the operating member to its original position to fix the movable contact of the switch. Pressure welding to bring the movable contact of the switch into the off state where it is spaced from the contact, and to swing the blade when the operating member is operated to the first and second working positions to bring the movable contact of the switch into the on state where it is in contact with the fixed contact. a slope portion provided on the blade and cooperating with the pressure contact to return the operating member to its original position when the operating force is released after the operating member has been operated to the first operating position; The operating member passes through the first operating position and then moves to the second operating position.
a holding part that holds the operating member in its second operating position when the operating member is operated into the operating position; and a return member made of a shape memory alloy that is provided in the case and is supplied with a current flowing to the motor via the switch. The return member is self-heated by the lock current when the motor is locked and returns to the memorized shape, thereby moving the operating member from the second operating position to the first operating position. A motor control switch device, characterized in that the motor control switch device is configured to return the motor to its original position after a period of time.