JP2590193Y2 - Window regulator safety device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a safety device for a window regulator.

[0002]

2. Description of the Related Art As a window regulator for raising and lowering a window glass of an automobile, a window glass is raised and lowered by vertically rotating an X-shaped arm comprising a main arm and a sub-arm rotatably mounted to cross the main arm. -Arm type window regulator that performs vertical movement, single-arm type window regulator that raises and lowers the window glass by rotating the main arm only up and down, and the wire is wound up and out of the drum by rotating the drum A wire-type window regulator or the like in which a window glass connected to the wire is raised and lowered has been widely known,
It is commonly used. In recent years, a power window regulator in which an electric motor is used to rotate the X-arm and the single arm up and down, rotate a drum, and the like has been widely used.

[0003]

In the power window regulator, each door window glass can be opened and closed by operating an open / close switch provided for each door, and a power window regulator provided in a driver's seat portion. Normally, it is possible to selectively open and close all front, rear, left and right door windows by operating a switch. For example, pull a neck, hand or finger out of a window opened by a child. If the on / off switch is erroneously operated in the closing direction while in the state of being closed, there is a danger that the human body will be pinched by the window glass that closes and be injured.

A variety of safety devices for avoiding the above-described danger have been developed in the past. Conventionally, a foreign object is detected electrically, and the energization of the electric motor is interrupted by the foreign object detection signal. The present invention aims to improve the function, simplify the configuration and reduce the cost by providing a mechanical safety device in a wire type window regulator. Is what you do.

[0005]

According to the present invention, there is provided a wire type window regulator in which a drive wire is operated by an electric motor and a window glass is opened and closed by the operation of the drive wire. The drive plate, which moves up and down guided by the guide rail by the operation of the wire, and the carrier plate attached to the lower edge of the window glass, can be rotated to the pin fixed to one of the drive plate and the carrier plate and the other And a connecting mechanism consisting of a spring attached to the hook and a spring for urging the hook in a direction engaging with the pin. When a downward load is applied relatively, the hook rotates in a direction to separate from the pin against the urging force of the spring and the drive plate and the carrier plate The first feature is that the inclined edge is configured to cancel the connection. A switch that detects that the connection between the drive plate and the carrier plate is released and generates a signal is provided. A second feature is that a circuit for rotating the drive plate in the window glass opening operation direction by reversely rotating the electric motor by a signal is provided in the drive control circuit of the electric motor.

[0006]

According to the first feature, when the window glass is closed, for example, when a human body is pinched, the load disengages the hook and the pin, the carrier plate is separated from the drive plate on the drive side, and the drive plate is raised. Even if the operation is continued, the closing operation of the window glass is stopped, and the human body is not injured. According to the second feature, when the carrier plate is separated from the drive plate, the electric motor rotates reversely and the drive plate is lowered, so that the hook automatically engages with the pin during the lowering or at the lower limit position. Thus, the window glass can be normally opened and closed thereafter.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a guide rail attached to an inner plate of a door so as to follow a vertical path of the window glass G, 2 denotes a drive plate fitted on the guide rail 1 so as to be vertically slidable, and 3 denotes a window glass. G, a carrier plate fixed to the lower edge, wherein the drive plate 2 and the carrier plate 3 include a pin 4 fixed to the drive plate 2, a hook 5 rotatably mounted on the carrier plate 3, and the hook 5 5 is connected by a connecting mechanism 7 including a spring 6 for urging the pin 5 in a direction to be engaged with the pin 4. Hook 5
The engagement portion 5a of the first embodiment rotates the hook 5 against the urging force of the spring 6 when a downward load of a predetermined value or more acts on the carrier plate 3 relative to the drive plate 2 to engage the pin 4 Is released, the upper edge is an inclined edge 5b inclined at a predetermined angle.

Reference numeral 8 denotes a driving wire, 9 denotes a drum, 10 denotes an electric motor (including a reduction gear) for driving the drum 9 for rotation, and the driving wire 8 includes upper and lower pulleys 11, The upper and lower ends are slidably guided into the outer tube 8a by upper and lower pulleys 11 and 12, and include a drum 9 and an electric motor 10. When the drum 9 is rotated by driving the electric motor 10, one end of the drive wire 8 is wound around the drum 9 and the other end is wound at the same time. Are driven out of the drum 9 to slide the drive plate 2 up and down. The relationship between the drive unit, the drive wire 8 and the drive plate 2 and the drive mode are the same. Is the same as the wire type window regulator.

Reference numeral 13 denotes a disconnection detecting section for detecting that the connection of the connecting mechanism 7 has been released.
A cam member 14 rotatably mounted on the mounting portion 1a of the guide rail 1, a switch 15 fixed to the mounting portion 1a such that a switch piece 15a is closely opposed to the cam surface 14a of the cam member 14, The wire guide portions 1b, 1 at the upper and lower ends of the guide rail 1 are mounted on the pulley portion 14c of the cam member 14.
c and a spring 17 for urging the cam member 14 in a direction (clockwise in the figure) for applying tension to the wire 16 in the opposite direction. In a normal state in which the drive plate 2 and the carrier plate 3 are connected by the connecting mechanism 7, the switch piece 15a of the switch 15 is fitted into the concave portion 14b of the cam surface 14a and the switch 15 is turned off. Have been.

The operation of the wire window regulator having the above configuration will be described below with reference to a motor drive circuit shown in FIG.

Normally, the hook 5 is kept in a normal state in which it is engaged with the pin 4, and the electric motor 10 is driven to rotate and the drum 9 is driven.
Is rotated, the drive plate 2 and the carrier plate 3 move up and down along the guide rail 1 as a result of the operation of the drive wire 8, and the window glass G is moved in the same manner as in the conventional wire type window regulator. Opening and closing are performed. In this case, since the positional relationship between the drive plate 2 and the carrier plate 3 is constant, the wire 16 is guided only by the upper and lower wire guides 1b and 1c and the pulley 14c and moves only in the longitudinal direction. , 14c, the substantially triangular shape of the wire 16 having the vertices unchanged,
Switch 15 remains off.

[0013] That is, when turning on the open switch SW ₁ opens the switch SW of the glazing, the output of the inverter I ₁ and transistor Tr ₁ is turned is H (high) and, for opening operation via the OR circuit OR ₁ the relay RY ₁ electric motor 10 is turned on is rotated in the opening direction, and a drive wire 2 and the carrier plate 3 is moved downwardly the window glass is opening operation.

[0014] When the closing switch SW ₂ turned on by the window glass open state, the output of the inverter I ₂ becomes transistor Tr ₂ is conductive is inputted to one input terminal of each of the H level and the circuit the AND ₁ and the AND ₂ You. Since this time the driving plate 2 and the carrier plate 3 is switch 15 as long as a state of being connected by a connecting mechanism 7 is off, the transistor Tr ₃ is an inverter I ₃ is the S terminal of the flip-flop FF nonconductive I H is input via ₄ .
The flip-flop FF has an S terminal and an R terminal having H and L terminals.
(Low), the output of the Q terminal is L. When L is input to the S terminal, the output of the Q terminal is switched to H. When the S and R terminals are H and H, the output is held. As described above, when H is input to the S terminal and H is input to the R terminal from the inverter I ₂ via the OR circuit OR ₂ as described above, the output of Q is held at L, and AND ₁ to the other input terminal L, the inverter I ₅
As a result, H is input to the other input terminal of AND ₂ and A
The output of the ND ₁ is turned L, the output of the AND ₂ and H, and the electric motor 10 becomes the closing operation relay RY ₂ is turned on and rotated in the closing direction, to move the drive plate 2 and the carrier plate 3 upward The windowpane operates closed.

During the closing operation of the window glass (close switch S
When sandwich the body part such as a window glass on the edge at W ₂ is in the ON state), since the carrier plate 3 with the driving plate 2 to be moved upward is locked contracture upward movement, pin 4 Presses the inclined edge 5b of the engaging portion of the hook 5 relatively upward, and against the urging force of the spring 6, the hook 5
Is rotated clockwise in the figure to release the connection of the connection mechanism 7, leaving the carrier plate 3 alone and moving only the drive plate 2 upward, thereby stopping the rising of the window glass, and causing injury due to pinching. Is prevented.
When the carrier plate 3 is left behind and only the drive plate 2 moves upward, the wire 16 is slackened, and the cam member 14 is rotated clockwise in FIG. 15a
Is turned on the cam surface 14a from the concave portion 14b, the switch 15 is turned on.

When the switch 15 is turned on, the transistor Tr ₃ becomes conductive, L is input to the S terminal of the flip-flop FF, the output of the Q terminal is switched to H, and AND
Closing operation relay RY ₂ output ₂ is at the L is turned off, closing direction rotation driving on stopping, output opening operation relay RY ₁ via the OR ₁ becomes H of the AND ₁ of the electric motor 10 Is turned on, the electric motor 10 is driven to rotate in the opening direction, and the drive plate 2 is moved downward.

When the drive plate 2 moves downward as described above, the hook 5 is engaged with the pin 4 at the middle or at the lower limit position. 16, the cam member 14 rotates counterclockwise in the drawing, and the switch piece 15a is pulled.
Is fitted in the recessed portion 14b, the switch 15 is turned off, and the input of the S terminal of the flip-flop FF is switched to H,
Since the output of the inverter I ₂ is input to the R terminal via the OR ₂ , the R terminal is H, the output of the Q terminal is held at H and the window glass is in the fully open position unless the closing switch SW ₂ is turned off. Descend to

[0018] After the hook 5 is engaged with the pin 4 switch 15 is turned off, when turning off the closing switch SW _2, S
The terminals become H and R terminals become L, the output of Q is switched to L, both relays RY ₁ and RY ₂ are turned off, the electric motor 15 is stopped, and then the open switch SW ₁ or the close switch SW ₂ is turned on. By operating, the opening and closing of the window glass is performed normally.

The drive plate 2 driven by the drive wires 8 and the carrier plate 3 fixed to the lower edge of the window glass are attached to the carrier plate 3 with a downward load of a predetermined value or more. When the human body is pinched by the upper edge of the window glass during the ascent operation of the window glass, the connection mechanism is configured to be connected by the connection mechanism 7 configured to release the connection when relatively acts on the window glass. 7 is released, the carrier plate 3 becomes free from driving of the driving unit, and the occurrence of injury can be prevented beforehand. When the connection of the coupling mechanism 7 is released, the switch 15 is operated to operate the electric motor 10. Reversely moves the drive plate 2 downward, thereby automatically returning the connecting mechanism 7 to the connected state and lowering the window glass. It is capable of performing closing operation properly.

In FIG. 2, the flip-flop FF
By the R terminal of the output of the inverter I ₂ as well as the output of the inverter I ₃ has a configuration in which input through the OR _2, switch 15 is released connection of the connecting mechanism 7 pinching the body is turned on the electric of When the motor 10 reverses and the drive plate 2 starts lowering, even if the connecting mechanism 7 returns to the connecting state during the lowering and the switch 15 is turned off, the window glass never turns upward. That is, only the output of the I ₃ the R terminal of the flip-flop FF is in the configuration of the inputting switch 15 returns soon coupling mechanism 7 connected state drive plate 2 is reversed electric motor starts to descend by the on switch 15 If There has been an off forgotten the closed switch SW ₂ when turned off, switch 1
5 is input S terminal of the flip-flop FF when turned off is H, the output is switched to the L input of R terminal Q terminal becomes L, and the output of the AND ₁ is L, the output of the AND ₂ is At H, the window glass starts the closing operation again, and there is a possibility that the human body is first sandwiched again without being removed. By allowed to enter the output of the I ₂ to R terminal as described above, when are off forgotten a closing switch SW _2, the window glass even switch 15 is switched off will continue to descend to the lower limit position, and its If the way down to turn off the closing switch SW _2, only the window glass at the time to stop the operation, not be never again increased, possibility that the human body is sandwiched again completely eliminated.

In FIG. 1, reference numeral 1d denotes a connection holding portion provided on the guide rail 1, and when the window glass is closed in a normal state in which the drive plate 2 and the carrier plate 3 are connected by the connection mechanism 7, the window glass is closed. At a position close to the fully closed position, the connection holding portion 1d faces
Of the hook 5 by the reaction force when the upper edge of the window glass compresses and elastically deforms the weather strip to be fully closed.
Is not deviated from the pin 4.

[0022]

As described above, according to the present invention, the drive wire is operated by the electric motor, and the drive plate connected to the wire is guided by the guide rail to move up and down to open and close the window glass. In the wire-type window regulator, the drive plate moving up and down by the drive wire and a carrier plate directly or indirectly attached to the lower edge of the window glass are connected by a connection mechanism, and the connection mechanism is connected to a carrier. With the configuration in which the connection is released when a downward load of a predetermined value or more acts on the plate, when the human body or the like is pinched on the upper edge of the window glass during the closing operation of the window glass, the connection mechanism is activated. The carrier plate is disconnected and the carrier plate is separated from the drive unit,
Injury due to pinching can be prevented, and the safety of the power window regulator can be improved.

A switch is provided for detecting that the connection mechanism is in the disconnected state, and the detection signal of the switch causes the electric motor to rotate in the reverse direction to move the drive plate downward, thereby automatically connecting the connection mechanism. It returns to the normal state where the drive plate and the carrier plate are connected, and the window glass can be opened and closed normally thereafter, and there is no need to perform any operation to return to the normal state after the safety device is activated. It is extremely effective.

[Brief description of the drawings]

1 shows an embodiment of the present invention, wherein (A) is a front view, (B) is an enlarged front view of a main part of (A), and (C) is (B).
XX cross-sectional view, (D) is a YY cross-sectional view of (B),
(E) is a principal part front view at the time of operation of a safety device.

FIG. 2 is a diagram showing an example of an electric motor drive control circuit of the window regulator shown in FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Guide rail 2 Drive plate 3 Carrier plate 4 Pin 5 Hook 5a Engagement part 5b Inclined edge 6 Spring 7 Connection mechanism 8 Drive wire 9 Drum 10 Electric motor 13 Disconnection detection part 14 Cam member 15 Switch 16 Wire 17 Spring SW Window glass off switch FF flip-flop RY ₁ opening operation relay RY ₂ closing operation relay

Claims (2)

(57) [Scope of request for utility model registration] 1. A wire window regulator in which a drive wire is operated by an electric motor, and a drive plate connected to the drive wire is guided by a guide rail to move up and down to open and close a window glass. And the carrier plate attached to the lower edge of the window glass,
A connection mechanism comprising a pin fixed to one of the drive plate and the carrier plate, a hook rotatably mounted on the other, and a spring for urging the hook in a direction engaging with the pin, is connected to the hook. The engaging portion rotates the hook in a direction in which the hook is disengaged from the pin against the urging force of the spring when a downward load equal to or more than a predetermined value acts on the carrier plate with respect to the drive plate. A safety device for a window regulator, wherein the safety device is configured on an inclined edge so as to release connection with the window regulator. 2. A safety device for a window regulator according to claim 1, further comprising a switch for detecting a disconnection between the drive plate and the carrier plate and generating a signal. A circuit for rotating the drive plate in the direction of opening the window glass by rotating the electric motor in response to the signal when the switch emits a signal; .