JP2606882Y2 - 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 drum type window regulator or the like in which a window glass connected to the wire rises and falls has been widely known and generally used. In recent years, the X
Power window regulators in which an electric motor controls the vertical rotation of a mold arm and a single arm, the rotation of a drum, and the like are being widely used.

[0003]

In a power window regulator, each door window glass can be opened and closed by operating an open / close switch provided for each door, and an open / close switch provided in a driver's seat portion. It is normal to be able to selectively open and close all front, rear, left and right door windows by the operation of, for example, a child puts a finger on the upper edge of the open window glass There is a risk of accidentally operating the open / close switch in the closing direction in the state, causing a finger to be caught in the window glass that closes and being injured.

A variety of safety devices for avoiding the above-mentioned danger have been developed in the past. Conventionally, a foreign object entrapment is detected by an increase in the motor current value, and power is supplied to the electric motor by a foreign object entrapment detection signal. An electrical safety device that shuts off the mainstream was mainstream.

However, in the power window regulator, the electric motor is often stopped by detecting the upper limit position when the window glass is closed and the lower limit position when the window glass is opened by increasing the motor current value. If the motor current set value for detecting foreign object entrapment is set relatively low to detect entrapment early, the upper edge of the window glass elastically contacts the weather strip at the end of the window glass closing operation and compresses and deforms it. When the motor is fully closed, the motor current exceeds the set value and the electric motor stops before the motor is completely closed by the reaction force. Therefore, the motor current set value must be set at least to the same value as the motor current value generated by the reaction force of the weather strip when the window glass is fully closed. There is a problem that the motor does not stop.

An object of the present invention is to address the above-mentioned conventional problems.

[0007]

SUMMARY OF THE INVENTION The present invention provides a window regulator in which a window glass is opened and closed by rotating an arm which is driven to rotate by an electric motor. The driven arm to be driven and the tip portion are divided into a window glass side arm linked to the window glass side, and these two arms are rotatably mounted on the base plate on the same axis, for example, provided on the drive side arm. The drive side arm and the window glass side arm are connected in the rotation direction by the engagement pin fitted to the other side of the engagement recess, for example, in the long hole of the window glass side arm by the urging force of the spring, so as to be integrally formed. When a downward load of a predetermined value or more is relatively applied to the window glass side arm, the engagement pin resists the urging force of the spring due to the inclination of the side edge of the engagement recess. Sliding in the elongated hole, the window glass side arm is rotated and displaced relative to the drive side arm by a predetermined angle in the window glass opening direction, and by the subsequent window glass closing operation, the engaging pin abuts on the stopper portion of the base plate. The configuration is such that the rotation of the electric motor in the closing direction is stopped when the operation of the driving arm in the closing direction is restrained. Also, the engagement pin is fitted into the engagement recess.
Engage the drive side arm and window glass side arm as one
When the window glass is closed while rotating, the window glass is fully closed.
From the vicinity of the position to the fully closed position,
An engagement pin regulating portion for restraining the sliding movement of the engagement pin;
It is characterized by being provided on a base plate.

[0008]

As described above, when a part of the human body such as a finger is pinched when the window glass is closed, the engagement pin slides in the elongated hole against the spring urging force by the inclined edge of the engagement concave portion due to the load. By rotating and displacing the window glass side arm relative to the drive side arm in the window glass opening direction, when the drive side arm reaches the closing operation limit position and the electric motor stops rotating in the closing direction, The window glass is positioned a predetermined stroke before the fully closed position due to the relative rotational displacement of the window glass side arm, so that the human body sandwiched between the window glass and the human body is not very strongly compressed, and the occurrence of injury is prevented beforehand. In this state, when the electric motor is driven to rotate in the window glass opening operation direction, the engagement pin is automatically fitted into the engagement recess by the urging force of the spring when the drive side arm is rotated in the opening direction, and is in a normal state. Then, the window glass can be normally opened and closed. In addition, the engagement pin is fitted into the engagement recess and engaged.
The drive side arm and the window glass side arm rotate together
When the window glass is closed in the normal operating state, the window glass
Sliding of the engagement pin from near the fully closed position to the fully closed position
The movement is restrained by the engagement pin regulating portion, so that the window
Upper edge of lath compresses and elastically deforms weather strip to fully close
The window glass side arm becomes the drive side arm due to the reaction force when
Fully closed window glass without rotational displacement
The state can be obtained and the window is
Closes the load that causes the glass side arm to rotate relatively.
Can be set lower than the weatherstrip reaction force
Thus, safety can be improved.

[0009]

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

FIG. 1 shows an example in which the present invention is applied to an X-arm window regulator. In FIG. 1, reference numeral 1 denotes a base plate attached to an inner plate of a door;
Reference numeral 2 denotes a main arm rotatably mounted on the base plate 1, and reference numeral 3 denotes a sub-arm rotatably mounted on an intermediate portion thereof at an intermediate portion of the main arm 2. The main arm 2 has a drive side arm 21 in which a rack 4 is fixed to a base end and an engagement recess 6 is formed in a tip end, and a long hole 22a in which the engagement pin 5 is slidably fitted and supported. The drive arm 21 is attached to the base plate 1 with a shaft 7 passing through a substantially middle portion in the longitudinal direction of the drive arm 21 and a base end of the window glass arm 22. A tension spring 8 is provided between the shaft 7 and
When the engagement pin 5 is held at a position of the elongated hole 22a near the shaft 7 by the spring force of the spring 8, the engagement pin 5
Engages with the engagement recess 6 at the tip of the drive arm 21, and the engagement between the engagement pin 5 and the engagement recess 6 causes the drive arm 21 and the window glass arm 22 to be centered on the shaft 7. As a unit. The engaging recess 6 has an inclined edge 61 whose lower edge is inclined downward by a predetermined angle.
When a load equal to or more than a predetermined downward value is applied to the window arm 22 on the drive arm 21, the engagement pin 5 against the spring force of the spring 7 due to the inclination of the inclined edge 61. The window glass side arm 22 is pivotally displaced downward relative to the drive side arm 21 while moving the front side of the long hole 22a, and the engaging pin 5 is engaged with the locking portion 61 at the tip of the inclined edge 61.
When it is engaged with the arm a, it reaches the front end of the elongated hole 22a, and is configured to hold the state in which the window glass-side arm 22 is rotationally displaced downward by the angle α relative to the drive-side arm.

The sub arm 3 has an arm portion 31 on the guide rail 10 side described later from the pivot 9 and an arm portion 32 on the fixed rail 11 described later on the pivot 9 just like the sub arm in the conventional X-arm window regulator. A window glass side arm 22 of the main arm 2
The base ends of the one arm portion 31 and the other arm portion 32 are joined to the front and back of the substantially middle portion in the longitudinal direction, and the arm portions 31 and 32 are integrally formed by the pivot 9 to form a window glass. It is attached so as to rotate with respect to the side arm 22.

The guide rail 10 is attached to the lower edge of the window glass, and the fixed rail 11 is fixed to the inner panel of the door.
The roller 12a provided at the tip of the sub-arm and the roller 12b at the tip of one arm 31 of the sub-arm are slidably or slidably fitted on the guide rail 10, and the roller 12c at the tip of the other arm 32 of the sub-arm is fitted on the fixed rail 11. Rolled or slidably fitted.

Reference numeral 14 denotes a pinion, and 15 denotes an electric motor (including a reduction gear) for driving the pinion 14 to rotate. The electric motor 15 is fixed to the base plate 1, and the pinion 14 meshes with the rack 4, and The rotation of the motor 15 causes the main arm 2 to swing up and down.

Reference numeral 13 denotes an engaging pin restricting portion provided on the base plate 1. The engaging pin 5 which is in a normal state near the fully closed state when the window glass is closed is engaged with the engaging pin restricting portion 13. Since the forward sliding movement of the engaging pin 5 is restrained, the window glass side arm 22 is driven by the reaction force when the upper edge of the window glass compresses and elastically deforms the weather strip to be fully closed. The engagement pin restricting portion 1 is provided so as not to be displaced downwardly with respect to the arm 21.
3, the inclination of the inclined edge 61a and the spring force of the spring 8 can be set such that the engagement pin 5 slides forward with a considerably smaller downward load than the weather strip reaction force at the end of the closing operation. It becomes possible. Further, a stopper 13a is formed to protrude downward in front of the engaging pin restricting portion 13, so that the engaging pin 5 is engaged with the engaging portion 61a at the tip of the inclined edge 61 of the engaging concave portion 6. In this state, the engaging pin 5 comes into contact with the stopper portion 13a to restrain the drive-side arm 21 from further rising.

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

Normally, the engagement pin 5 is kept in a normal state in which the engagement pin 5 is fitted and engaged with the engagement recess 6, and when the electric motor 15 is driven to rotate, the pinion 14 and the rack 4 mesh with the drive arm 21 and the window glass. The side arm 22 integrally swings up and down around the shaft 7 to open and close the window glass in exactly the same manner as in the case of the conventional X-arm window regulator.

That is, an operation unit (window glass opening / closing switch) a
When the open switch or the close switch is turned on, the control unit b issues a predetermined instruction signal to the relay driver c according to the ON signal, and the relay driver c responds to the instruction signal to cause the relay driver c to open or close the relay d ₁ or open operation. the relay d ₂ is turned on,
The electric motor 15 is driven to rotate in the opening operation direction or the closing operation direction. Then, the motor current signal is amplified and input to the first and second comparators f ₁ and f _2. The first comparator f ₁ compares the signal with the first reference value g ₁ and the second comparator f ₂ Then, a comparison is made with the second reference value g _2, and when the respective comparators exceed the reference value, a signal is issued to the control section b. The first reference value g ₁ is set to a value corresponding to the motor current value when the window glass is lowered to the lower limit position and further lowered by the stopper, and the second reference value g ₂ is The value is set to a value corresponding to the motor current value when the upper edge of the window glass is in elastic contact with the weather strip and the weather strip is compressed and elastically deformed to be in a fully closed state. The control unit b instructs the stop of the electric motor to the relay driver c determines that the window glass fully open when the signal from the first comparator f ₁ if the window glass opening in operation is input, based on the instruction and off the opening operation relay d _1, and instructs the stop of the electric motor is determined that the window glass fully closed relay driver c by the signal input from the second comparator f ₂ if in the window glass closing operation, to turn off the closing operation relay d ₂ based on the instruction. In this manner, the opening and closing of the window glass is performed in exactly the same manner as in the case of the conventional X-arm window regulator.

When a part of the human body such as a finger is pinched near the fully closed position during the closing operation of the window glass, the window glass side arm 22 applies a downward load to the driving side arm 21 which rotates upward. Receiving the load, the inclined edge 61 of the engagement recess 6
The engagement pin 5 slides forward against the spring 7 to reach the locking portion 61 a due to the inclination of the window glass side arm 22. Displace.

[0019] The contact with seals contracture upward rotation of the drive-side arm 21 with the stopper portion 13a engaging pins 5 in this state, the second comparator in increase in the motor current associated therewith f ₂
Generates a signal, and the electric motor 15 stops.

When the electric motor 15 is stopped, the windowpane-side arm portion 22 is rotated downward by an angle α with respect to the drive-side arm 21, so that the windowpane is moved from the fully closed state to the angle α. Since the human body is located in front by the corresponding stroke, the sandwiched human body is not compressed so strongly, and the occurrence of injury is prevented beforehand.

After the electric motor 15 is stopped, the operating portion a is operated to open the window glass and the drive arm 21 is rotated downward, and the engaging pin 5 is automatically engaged by the spring force of the spring 8. After returning to the normal state by sliding toward the back of the concave portion 6, a normal window glass opening / closing operation can be performed thereafter.

The embodiment of FIG. 1 shows an example in which the present invention is applied to an X-arm window regulator.
It goes without saying that the present invention can be applied to not only the arm type but also a single arm type window regulator.

[0023]

As described above, according to the present invention, there is provided a vehicle window regulator in which an arm that rotates up and down by an electric motor and a window glass is opened and closed by the up and down rotation of the arm. The arm is divided into a drive-side arm that is rotationally driven by an electric motor and a window-pane-side arm whose tip is linked to the windowpane-side, and the drive-side arm and the windowpane-side arm are coaxial. With a very simple structure, which is rotatably attached to the base plate and provided with a means for connecting the first arm portion and the second arm portion so as to be rotatable and displaceable in a predetermined angle range in the rotation direction, the window glass has a very simple structure. When a part of the human body is sandwiched between the upper edges of the window glass during the closing operation and a downward load acts on the second arm, the second arm is relatively moved with respect to the first arm. And rotationally displaced in the direction, the window glass is stopped at a predetermined stroke short of the fully closed position, in which it is possible to prevent injury entrapment, in which it is possible to improve the safety of the power window regulator.

[Brief description of the drawings]

1A and 1B show an embodiment of the present invention, wherein FIG. 1A is a front view, FIG. 1B is a sectional view taken along line XX of FIG. 1A, and FIG. .

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 Base plate 2 Main arm 3 Sub arm 4 Rack 5 Engagement pin 6 Engagement recess 7 Axis 8 Spring 9 Axis 10 Guide rail 11 Fixed rail 13 Engagement pin control part 13a Stopper part 14 Pinion 15 Electric motor 21 Drive arm 22 Window glass Side arm 22a Long hole 61 Inclined edge 61a Locking part

Continuation of front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B60J 1/17 E05F 11/44 E05F 15/16

Claims (2)

(57) [Scope of request for utility model registration] 1. A window regulator in which a window glass is opened and closed by the vertical rotation of an arm that is driven to rotate up and down by an electric motor. Arm and a window glass side arm having a leading end linked to the window glass side , and both the drive side and the window glass side arms are rotatably mounted on the base plate on the same axis. An engagement pin slidably fitted in a long hole provided in one of the arms is fitted and engaged in an engagement recess provided in the other arm by the biasing force of a spring, so that the drive arm The window glass side arm is connected in the rotation direction and integrally rotates, and when the downward load of a predetermined value or more acts on the window glass side arm relative to the drive side arm, the split is performed. The engaging edge slides the engaging pin in the elongated hole against the urging force of the sliding arm to rotate the window glass side arm relative to the drive side arm by a predetermined angle in the window glass opening direction. On the drive side
The window glass side arm is relatively open to the window glass.
The window glass closing operation is continued when it is displaced by the specified angle
When the drive side arm closes the
The mating pin abuts and locks the drive arm further closing action
To stop the electric motor from rotating in the closing direction
A window regulator safety device characterized in that a part is provided on a base plate . 2. The window regulator safety device according to claim 1, wherein the engagement pin is fitted into the engagement recess.
The drive side arm and window glass side arm
When the windowpane is closed when it is turned, the windowpane is fully closed.
From the vicinity to the fully closed position, the engagement pin is engaged with the engagement pin.
The engaging pin restricting section that locks the slide movement of the
Wind regulation provided on the plate
Data safety device .