JPH0737022Y2 - Position sensor for automobile wind regulator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a position sensor for a window regulator of an automobile, which is suitable for detecting a position of a window glass.

〔background〕

Generally, a window regulator of an automobile, particularly a wire type window regulator, includes a slidable carrier plate having a window rail coupled to a guide glass, and a wire fixed to the carrier plate is transferred to open and close the window glass.

By the way, this type of window regulator is built in a door whose installation space is limited, and a large amount of grease adheres due to the existence of a sliding mechanism, and is manufactured as a functional component, so that it is transported by itself. Often, external shocks and vibrations are added.

Therefore, when trying to attach a position sensor that detects the open / closed position of the window glass to the window regulator,
Although a position sensor suitable for the above-mentioned use environment is required, the actual situation is that an optimum position sensor is not provided at present, and a new position sensor suitable for the above use environment is demanded here.

[Structure of the Invention] The present invention is intended to provide a new position sensor for a window regulator of an automobile, which meets the above-mentioned requirements, and is achieved by a position sensor 1 shown below.

That is, the position sensor 1 for a window regulator according to the present invention is a wire type window regulator R including a carrier plate 3 slidably supported by a guide rail 2, and a push pin 12 that is elastically displaced is provided on the carrier plate 3. At the same time, a piezoelectric sensor 10 is mounted on the surface of the guide rail 2 at a predetermined position, the piezoelectric sensor 10 changing the electrical output state when the pressing pin 12 is pressed.

[Action]

 Next, the operation of the present invention will be described.

A position sensor 1 for a window regulator according to the present invention is
A piezoelectric sensor is located at the target detection position on the guide rail 2.
Since the carrier plate 3 that slides corresponding to the open / close position of the window glass W reaches the detection position, the elastically displacing pressing pin 12 provided on the carrier plate 3 comes into pressure contact with the piezoelectric sensor 10, The electrical output state of the piezoelectric sensor 10 is changed. Therefore, the existing window regulator R can be used as it is for reliable position detection.

〔Example〕

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

First, in order to clarify the present invention, the overall configuration of the wire type window regulator R will be described with reference to FIG. FIG. 1 is a schematic side view of a window regulator equipped with a position sensor according to the present invention.

A vertical guide rail 2 is fixed to the door D, a slidable carrier plate 3 is provided on the guide rail 2, and a window glass W is connected to the plate 3 via holders 31, 31. . A rotary drum 33 rotated by a motor 32 is arranged near the guide rail 2, and a wire 36 is bridged between the rotary drum 33 and the guide members 34 and 35 arranged at the upper and lower ends of the guide rail 2. The wire 36 on the guide rail 2 is fixed to the carrier plate 3. Therefore, the motor 32 rotates the rotating drum 33.
If the wire is rotated, the wire 36 is transferred and the window glass W
Can be raised and lowered.

Next, the position sensor 1 according to the present invention attached to such a window regulator R will be described with reference to FIGS.

1 is a partially enlarged view of a window regulator provided with a position sensor according to the present invention, FIG. 2 is a view taken in the direction of arrow A in FIG. 1, and FIG. 3 is an enlarged view of a circle B portion in FIG. Is.

An engaging member 11 made of synthetic resin provided on the carrier plate 3 is engaged with the guide rail 2, and the piezoelectric sensor 10 is provided on the surface track of the guide rail 2 with which the engaging member 11 slides.
Install. On the other hand, the engaging member 11 is configured so that the pressing pin 12 facing the piezoelectric sensor 10 is elastically supported by the spring 13, and the tip of the pressing pin 12 can be pressed against the upper surface of the piezoelectric sensor 10. Therefore, the piezoelectric sensor 10 produces an electrical output by being subjected to a mechanical pressing force, so that the piezoelectric sensor 10
By selecting the mounting position and range, it is possible to detect the position of the carrier plate 3, that is, the opening / closing position of the window glass W (for example, the shift point).

In this way, since the position sensor 1 can be easily and directly attached to the existing window regulator itself, it is not necessary to secure a separate installation space, the limited space can be used meaningfully, and reliable detection can be performed. In addition, the structure can be made to be unaffected by grease and dirt on the surface.

Next, a suitable window regulator control device using such a position sensor will be described.

FIG. 5 is a block system diagram of the control device, and FIGS. 6 and 7 are relationship diagrams of the stroke region of the windshield controlled by the device and the moving speed. Reference numeral 32 denotes the motor, which is built in the window regulator R shown in FIG. A current control circuit 52 controls the direction, magnitude, and on / off state of the drive current supplied to the motor 32. Further, the current control circuit 52 is connected with a manual switch 53 for controlling the opening and closing of the window glass W by a manual operation and a position sensor 1 for detecting the position of the window glass W, respectively. Such a control device functions as follows. Now, it is assumed that the manual switch 53 is operated to the closing side when the window glass W is fully opened. In this case, the window glass W moves in the closing direction at a constant moving speed Vo. Then, when the predetermined intermediate point Pm is reached, the position sensor 1 detects each. As a result, the current control circuit 52 reduces the current flowing to the motor 32, sets the moving speed Vr of the window glass W to a speed lower than the moving speed Vo (Vr <Vo), and fully closes the point at the moving speed Vr. Move to Ps. The area Ar between the intermediate point Pm and the fully closed point Ps is preferably set to about 100 mm to 200 mm, for example. Also, the moving speed Vr is the sixth
It may be gradually decreased along with its position in the area Ar as shown in the figure, or may be constant as shown in FIG.

In this way, the window glass W is provided between the midpoint Pm and the fully closed point Ps.
Because the moving speed of the
Even when the vehicle moves in the closing direction, objects existing in front of it can be promptly removed, the probability of being caught by the window glass W can be significantly reduced, and in the case of ventilating the vehicle interior, Only a few (number
Even when you want to open it, the setting operation becomes extremely easy.

Although the embodiments have been described in detail above, the present invention is not limited to such embodiments. For example, although a pressing member is separately provided on the carrier plate, a part of the carrier plate itself may be directly used.
Further, a plurality of piezoelectric sensors may be biased at predetermined intervals, or may be ones capable of continuously detecting the position. In addition, the detailed configuration, shape, arrangement, parts, materials, quantity, etc. can be arbitrarily changed and implemented without departing from the scope of the present invention.

[Effect of device]

As described above, the position sensor for a window regulator according to the present invention is a wire type window regulator including a carrier plate slidably supported by a guide rail. Since a piezoelectric sensor whose electric output state changes when the pressing pin is pressed is attached to the surface of the rail at a predetermined position, the following remarkable effects are obtained.

Since it can be attached directly to the existing window regulator itself, it can contribute to downsizing without securing a separate installation space.

Since the piezoelectric sensor is used, it is possible to configure a position sensor that sufficiently withstands adhesion of grease and external impact.

If the position sensor is used to detect shift points and stop points for the windshield, it will be easier to automatically set the desired opening degree in response to ventilation, tollgate payment, preference, etc. Excel.

[Brief description of drawings]

1 is a partially enlarged view of a window regulator provided with a position sensor according to the present invention, FIG. 2 is a view in the direction of arrow A in FIG. 1, FIG. 3 is an enlarged view of a circle B portion in FIG. 4 is a schematic side view of a window regulator equipped with a position sensor according to the present invention, FIG. 5 is a block system diagram of a control device, and FIGS. 6 and 7 are stroke area pairs of opening / closing members controlled by the device. Relationship diagram of movement speed. In the drawing, 1: Position sensor 2: Guide rail 3: Carrier plate R: Window regulator 10: Piezoelectric sensor 12: Push pin

Claims (1)

[Scope of utility model registration request] 1. A wire type window regulator comprising a carrier plate slidably supported by a guide rail, wherein a push pin for elastically displacing the carrier plate is provided, and a surface of the guide rail at a predetermined position is provided. A position sensor for a window regulator of an automobile, characterized in that a piezoelectric sensor that changes an electrical output state when the pressing pin is pressed is attached.