JPH0326592Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an improvement of a two-stage operation switch for opening and closing power windows of automobiles, etc.

(Prior Art) Conventionally, as this type of switch,
Something like the one shown in B has been proposed (Jikko Sho 57
−17707).

This is equipped with a mechanism in which the switch actuating piece b, which is pivotally mounted in the upper opening of the case a so as to be able to swing from side to side, returns to the neutral position by a pressing pin d that is biased by a spring c. An electromagnet f is provided opposite a magnetic material piece e attached to the switch, and when the switch operating piece b is swung to the first and second operation positions, the first contact part g,
g' and the second contact portions h, h' are closed, thereby causing the window lifting/lowering motor to rotate in the forward or reverse direction, and the switch operating piece b to be locked by the excitation of the electromagnet f.

(Problems to be Solved by the Invention) According to the above-mentioned prior art, the electromagnet f is fixed in the case a so as to face the magnetic material piece e on the side surface of the switch actuating piece b, so the size of the case a is It is difficult to increase the size of the electromagnet f without changing its size. Furthermore, since it is difficult to increase the size of the magnetic material piece e, the holding force of the electromagnet f cannot be sufficiently increased.

In addition, the contact operated by the swinging of the switch operating piece b requires two members: the first contact part g, g' for driving the motor and the second contact part h, h' for energizing the electromagnet. However, there were problems such as the internal structure becoming complicated and the two being unable to be used as a common contact point, resulting in high costs.

Therefore, in view of the above-mentioned conventional problems, the present invention has made the internal structure simple and reliable operation by standardizing the contacts for motor drive and electromagnet energization and improving the lock structure of the switch knob. The purpose of the present invention is to provide a two-stage operation switch for a power window that can be operated in a compact manner and that can be manufactured compactly.

(Means for Solving the Problems) In order to achieve the above object, the two-stage operation switch for power windows made by the present invention is pivotally mounted to be able to swing in both directions from a neutral position, and is constantly operated by a return mechanism. a switch knob that is returned to and held in a neutral position and that is operated in two steps from the neutral position to a first operating position and then to a second operating position against the returning force of the returning mechanism; and a first operating position of the switch knob. A contact that closes in response to the above operation and energizes the wind glass lifting motor, an electromagnet that is energized by the closing of the contact, and a switch knob that is moved to the second operating position in response to the energization of the electromagnet. A two-stage operation switch for a power window includes a holding plate that holds the switch knob that has been moved against the returning force of the returning mechanism, and a holding plate that is rotatably mounted below the holding plate along a plane orthogonal to the direction of movement of the holding plate. A magnetic plate piece is arranged and is attracted by the excitation of the electromagnet and rotated in one direction, and an inclined surface is formed on the upper surface of the magnetic plate piece, and a protrusion that engages with the inclined surface is held. When the magnetic plate piece is rotated in one direction by the excitation of the electromagnet, the inclined surface of the magnetic plate piece engages with the protrusion of the holding plate, and the holding plate is moved toward the switch knob side. The switch knob that has been moved and operated to the second operation position is held against the return force of the return mechanism.

(Function) The two-stage operation switch of the present invention has a contact that closes when the switch knob is operated beyond the first operation position.
Since this contact can be used commonly for both motor drive and electromagnet energization, the structure is simplified and reliability is improved, and the number of components is reduced, which helps reduce costs.

The locking of the switch knob is not carried out directly by an energized electromagnet, but by attracting a piece of magnetic material placed below the holding plate so that it can rotate freely along a plane perpendicular to the direction of movement. The holding plate is rotated in one direction, and the protrusion of the holding plate is engaged with the inclined surface of the upper surface to push up the holding plate. The restoring force by the restoring mechanism is once received by the rotating surface of the magnetic piece, and the force applied to the magnetic piece against the attraction force becomes extremely small due to the component force on the inclined surface. In this way, the locking of the switch knob is
Since this is done indirectly by the combination of the rotatable magnetic material piece and the holding plate, there is no need for a large electromagnet, and together with the common use of the switches, the entire switch can be made more compact. Furthermore, even if the electromagnet is energized, the holding plate does not operate until the switch knob reaches the second operating position, so the switch knob is not self-retained (locked), thereby ensuring reliable operation with fewer malfunctions.

In addition, since the switch is made more compact, the connector and control circuit, which were conventionally provided separately from the switch, can be installed inside the switch case without increasing the size, making it possible to manufacture a two-stage operation switch that is small and easy to install. be able to.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

Figure 1 is a perspective view of the two-stage operation switch, Figures 2 and 3 are the - line and - line in Figure 1, respectively.
It is a sectional view along a line.

In FIGS. 1 and 2, reference numeral 1 denotes a switch knob, which is pivotally supported on a support shaft 3 supported at the upper opening of the upper case 2 so as to be swingable in both left and right directions. 4
1 is a switch operation piece projecting from the lower surface of the switch knob 1, and a press pin 5 is attached to a hole 4a formed upward from the lower end of the switch operation piece so as to be able to move forward and backward. The tip of this pressing pin 5 is urged downward by a spring 7 so as to press against a valley-shaped inclined surface 6 integrally formed with a step inside the upper case 2, and the tip of the pressing pin 5 is urged downward by a spring 7 so as to be in pressure contact with a valley-shaped inclined surface 6 formed integrally with a step inside the upper case 2. It forms a return mechanism.

When this press pin 5 presses the switch knob 1 and rotates it clockwise or counterclockwise, it swings on the slope 6 and comes into contact with the step 6a and stops. 1 operation position”
). If you press switch knob 1 further,
The press pin 5 swings over the step 6a, and the flange 8, which is integrally formed at the lower part of the switch knob 1 in the rotating direction, comes into contact with the upper surface of the upper case 2 and stops (hereinafter referred to as
This position is called the "second operating position" of the switch knob).

Reference numeral 9 denotes a holding plate which is attached to an opening 6b provided in the center of the inclined surface 6 so as to be able to move up and down from below.
Reference numeral 10 denotes a piece of magnetic material, which is integrally molded from iron or other magnetic material and plastic material. Arms 11 and 11' of magnetic material are provided symmetrically at both ends of the piece. Inclined surfaces 12, 12' (see FIG. 9) are provided in a symmetrical manner. This piece of magnetic material 10 is attached to a shaft 1 which is installed upright in the inner case 14.
5 is rotatably supported. Further, when the switch knob 1 is in the first operating position from the neutral position, there is a slit at the bottom of the inclined surfaces 12, 12' facing in the direction of rotation of the magnetic piece 10, as shown by A in FIG. A spherical protrusion 13 protruding from the lower surface of the holding plate 9,
13' are in contact.

Reference numeral 16 denotes an electromagnet formed in a substantially U-shape, with pivot surfaces 17 and 1 formed symmetrically at both ends thereof.
Magnetic shielding plates 18, 18' are attached to 7', and are fixed to the inner case 14 so as to face the arms 11, 11' of the magnetic material piece 10 with a slight distance therebetween.

Next, turn on and off by operating switch knob 1.
The mounting structure of the contact will be explained below.

In FIGS. 3 and 4, reference numeral 19 denotes fixed contact pieces arranged symmetrically in the upper part of the inner case 14, reference numerals 20 and 20' refer to contact pieces made of elastic plates arranged in the middle part, and 21 is a fixed contact piece arranged at the lower stage, and contact pieces 19, 20, 21 and contact piece 1
9, 20', and 21 form a set.

Contacts 22, 2 are provided at both ends of the upper contact piece 19.
2' is provided to protrude downward, and when the switch knob 1 is in the neutral position, the double-sided contacts 23, 23' provided at the tips of the connecting pieces 20, 20' in the middle stage reduce the elasticity of the contact pieces 20, 20', respectively. Due to the upward deflection caused by this, the contacts 22, 22' of the upper stage are brought into contact.
At this time, the two contact pushing pieces 24 and 24' provided above the upper case 2 so as to be freely retractable are connected to the connecting pieces 20 and 2.
It contacts the middle part of 0' and is pushed upward.

Next, when the switch knob 1 is pressed to the first operating position, the contact pusher piece 24 is pressed by the bottom of the knob 1.
Or 24' is pressed downward, pushing down the contact piece 20 or 20', and the contact 23 or 23' is connected to the contact 25 or 2 provided at both ends of the lower contact piece 21.
5'.

Further, when the switch knob 1 is pressed to the second operating position, the contact pieces 20, 20' are bent downward while the contacts 23 and 25 or 23' and 25' are in contact with each other.

Among the above contacts, contacts 22 and 22' are the 10th
As shown in the figure, the common fixed contacts are connected to a switching circuit SwC that turns off the electromagnet 16 when the window glass is fully opened or closed, and the contacts 23 and 23' are independent movable contacts. As shown in FIG. In addition, contacts 25, 25'
is connected to battery B as a common fixed contact.

The switching circuit SwC utilizes the fact that during window opening/closing operations, more current flows through the motor M when the window is fully open or completely closed than in normal operating conditions. The current change is detected by the voltage change across the detection resistor Rd, and the comparison circuit COMP compares this voltage with the reference voltage provided by the Zener diode ZD. Based on the comparison result, it is detected that the detected voltage has increased, and the switching element SwE is activated. A signal is applied via timer T to turn off the element.

When the above signal is instantaneous, for example, when the window is closed, the glass hits the rubber seal, but if the motor stops in this state, it will not be completely closed, so the timer T will press the rubber to some extent. However, the timer T is provided to perform this operation, and the switch element is activated after a certain period of time, for example, 0.7 seconds, after the signal from the comparison circuit COMP rises.
Operates to turn SwE off.

Each of the above power supply circuits is formed on the control board 26 as shown in FIG. 3, and is fixed inside the internal case 14 via bus bars. Further, the terminals connected to the battery B and the forward and reverse rotation terminals U and D of the lifting motor are fitted into a connector 28 formed integrally with the lower case 27.

Next, the effect will be explained.

When the switch knob 1 is pressed clockwise (counterclockwise) and rotated to the first operating position shown in Fig. 5, the contacts 23, 23' and the contacts 25, 25' come into contact and the motor M reverses (normally rotates). Then the window lowers. At this time, the electromagnet 16 is also excited and the magnetic material piece 10
is sucked in and tries to push up the holding plate 9 by its rotation, but the press pin 5 attached to the switch knob 1
is connected to the inclined surface 6 and the retaining plate 9 by the compression spring 7.
7, the holding plate 9 cannot rise to the holding position (see FIG. 7). Therefore, when the pressing force on the switch knob 1 is released, the neutral position return mechanism using the compression spring 7 is activated and the window is stopped midway.

Next, when the switch knob 1 is further advanced from the first operating position and rotated to the second operating position shown in FIG. 6, the pressing pin 5 that was in pressure contact with the inclined surface 6 and the retaining plate 9 moves above the inclined surface. Therefore, the holding plate 9 is in a state where it can freely move forward and backward. Along with this, the magnetic material piece 10 also becomes rotatable, so that it is attracted and held by the electromagnet 16 in the excited state. As a result, the holding plate 9 is pushed up to the position shown in FIG. is self-held in the second operating position (see Figure 8). Therefore,
Even if the operator releases the pressing operation, the window automatically reaches the fully open (fully closed) position. When the window reaches the fully open (fully closed) position, the motor stops due to overload, and the self-holding is canceled by the switch element SwE which detects that the window is fully open or fully closed and turns off the electromagnet 16.

As is clear from the above embodiments, in the present invention, the contacts 23 and 2 are closed by operating the switch knob 1.
5 and the like are used as common contacts for energizing the motor M and the electromagnet 16, the structure is simple and reliability is improved, and furthermore, by reducing the number of component parts, it is possible to reduce costs and downsize the switch.

Since the self-retention of the switch knob 1 is achieved indirectly through the magnetic material piece 10 and the retainer plate 9, which are rotated by the excitation of the electromagnet 16, a sufficiently large retaining force can be achieved without requiring a large electromagnet as in the conventional case. can get. Further, even if the electromagnet is excited, this self-holding does not function until the switch knob reaches the second operating position, so that the operation can be performed reliably with fewer malfunctions.

In addition, the holding plate 9, magnetic material piece 10, electromagnet 16, etc. that constitute the self-holding mechanism of the switch knob 1 are as follows:
Since the switch knob 1 and the switch knob 1 are all arranged in the vertical direction, the switch can be made smaller and more compact in addition to the common use of the contacts mentioned above.

Furthermore, even if the connector and the control circuit are incorporated into the case as in this embodiment, the switch can be made sufficiently compact without increasing the size of the entire switch, and its ease of installation can be improved.

[Effects of the invention] As described above, the two-stage operation switch of the invention has the following effects:
The internal structure is simple, allows reliable operation, and can be manufactured compactly.

In particular, since the switch knob is kept locked using a combination of a magnetic material piece rotated by an electromagnet and a holding plate, the switch knob is kept locked against the return force by using a small electromagnet. From this point of view as well, miniaturization has become possible.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an embodiment of the switch of the present invention, FIG. 2 is a sectional view taken along the line - in FIG. 1, and FIG. 3 is a sectional view taken along the line - in FIG.
Figure 4 is an explanatory diagram showing the arrangement of the magnetic material piece and the contact member, Figures 5 and 6 are explanatory diagrams each showing the operating state of the contact part, and Figures 7 and 8 are respectively the operating state of the holding part. FIG. 9 is an explanatory diagram showing the mutual relationship between the magnetic material piece and the holding plate, and FIG. 10 is a wiring diagram of the switch. FIG. 11 shows a conventional example, in which A is a partially broken front view and B is a longitudinal side view thereof. 1... Switch knob, 2... Upper case, 9...
Holding plate, 10... Magnetic material piece, 12... Inclined surface, 1
3...Protrusion, 16...Electromagnet, 19,20,2
0', 21... contact piece, 22, 22', 23, 23'
25, 25'...Contact.

Claims (1)

[Claims for Utility Model Registration] It is pivotably mounted to be swingable in both directions from a neutral position, is normally returned to and held at the neutral position by a return mechanism, and is returned to the neutral position against the return force of the return mechanism. a switch knob that is operated in two steps from the first operating position to the second operating position; a contact that closes in response to an operation of the switch knob at the first operating position or higher and energizes a motor for raising and lowering the window glass; and a contact that closes the contact. an electromagnet that is energized by the electromagnet; and the second
A two-stage operation switch for a power window, comprising a holding plate that holds the switch knob operated to the operating position against the return force of the return mechanism, wherein a holding plate is provided below the holding plate along a plane perpendicular to the direction of movement of the holding plate. A magnetic plate piece is rotatably arranged and is attracted by the excitation of the electromagnet and rotated in one direction, and the magnetic plate piece forms an inclined surface on the upper surface and engages with the inclined surface. A protrusion is formed on the holding plate, and when the electromagnet is excited and the magnetic plate piece rotates in one direction, the inclined surface of the magnetic plate piece engages with the protrusion of the holding plate, and the holding plate is rotated. A two-stage operation switch for a power window, characterized in that the switch knob is moved to the switch knob side, and the switch knob operated to the second operation position is held against the return force of the return mechanism.