JPH0361832B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a wind regulator for an automobile, and particularly to a wind regulator of the above type that has a compact structure and requires a light operating force.

<Prior Art> Conventionally, as automotive window regulators, an arm type in which a window glass is raised and lowered via an arm, and a wire type in which winding and unwinding of a wire cable is used are known. However, the above-mentioned arm type requires a large assembly space, requiring a thick door panel, and has the disadvantage of increased weight.In addition, the above-mentioned wire type has the disadvantage that it is difficult to reduce the operating force. When the weight of the glass is large, there is a disadvantage that special auxiliary means are required to balance the weight of the glass.

<Problems to be Solved by the Invention> In view of these drawbacks of the prior art, the main object of the present invention is to provide a window regulator that has a compact structure and is capable of opening and closing automobile windows with light operating force. Our goal is to provide the following.

<Means for Solving the Problems> According to the present invention, such an object is achieved by: a handle rotatably attached to a door inner panel;
a bobbin to which rotational force is applied by the handle;
a constant force spring consisting of a tightly wound spiral spring whose one end is fixed to the bobbin and is tightly wound when free, and a window glass is connected to a portion of the constant force spring that is paid out from the bobbin. This is achieved by providing a wind regulator for an automobile, characterized in that, by rotating the handle, the constant force spring is wound onto the bobbin and sent out, thereby raising and lowering the window glass. Ru.

<Operation> In this way, the bobbin around which one end of the constant force spring (the spiral spring tightly wound when free) is wound is rotated using the handle attached to the door inner panel, and the bobbin of the constant force spring is rotated using the handle attached to the door inner panel. By raising and lowering the window glass connected to the part fed out from the bobbin, it is possible to utilize the traction force exerted by the constant force spring itself, which is always trying to wrap around the bobbin, as the weight retention force of the window glass. Therefore, since it is possible to reduce the operating force of the wind regulator without using any special auxiliary means, the entire device can be configured compactly and can be made lighter.

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

In FIG. 1, a bobbin 2 is attached to a rotating shaft 8 of a handle 1 for raising and lowering a window glass 5 so that it can rotate integrally with the handle 1. A constant force spring 3, which has one end attached to the bobbin 2, is wound around the bobbin 2 in a counterclockwise direction in FIG. The constant force spring 3
The other end is pulled out from the bobbin 2, passes through an upper guide roller 4 mounted inside the door, and is attached to the lower edge of the center of the window glass 5. At the same time, a wire cable 6 with one end fixed to the bobbin 2 is attached to the bobbin 2 in the clockwise direction in FIG.
That is, the wire cable 6 is wound in the opposite direction to the constant force spring, and the other end of the wire cable 6 is attached to the central lower edge of the window glass 5 via a lower guide roller 7 installed inside the door. .

As shown well in Figures 3 and 4,
A core 9 having an opening 9a in a part of its outer periphery is fixed to the rotating shaft 8 of the handle 1, and a casing 11 having a cylindrical portion surrounding the core 9 supports the rotating shaft 8 at its center. It is fixed to the door panel 12 in such a manner. A bobbin 2, which has a groove on its outer periphery around which a constant force spring 3 and a wire cable 6 are wound, is integrally and rotatably attached to a rotating shaft 8.

The boss 13 of the bobbin 2 that protrudes toward the handle 1 side has a convex portion 1 that engages with the opening 9a of the core 9.
3a protrudes outward in the radial direction, and a coil spring 10 is interposed in the gap between the outer surface of the core 9 and the inner surface of the casing 11, and as shown in FIG. is bent inward in the radial direction, and both ends 10a protrude into the gap formed between the opening 9a and the convex portion 13a, and the outer circumference of the coil spring 10 is usually in close contact with the inner surface of the casing 11. are doing. When the rotating shaft 8 is rotated through the handle 1 in this state,
The bent end 10a of the coil spring 10 is pushed by the end of the opening 9a of the core, and the diameter of the coil spring 10 is reduced, causing the convex portion 13
The handle 1 and the bobbin 2 rotate integrally with each other due to the engagement between the handle 1 and the opening 9a.

Next, when an attempt is made to rotate the bobbin 2 via the constant force spring 3 by pushing down the window glass from the outside, the coil spring 10 conversely widens its diameter, acts as a brake against the casing 11, and rotates the bobbin 2. I can't let you. That is, the coil spring 10 functions as a reversal prevention mechanism via the core 9 and the casing 11.

The operation procedure of the embodiment described above will be explained.

In FIG. 1, when the handle 1 is rotated counterclockwise, the bobbin 2 winds up the constant force spring 3 and sends out the wire cable 6, causing the window glass 5 to rise along the guide rails 5a and 5b. let At this time, the rising side constant force spring 3 generates a torque in the direction of tight winding in its natural state, that is, in the direction of winding on the bobbin 2, so it acts as a rotational assist for the rotating shaft 8 and performs the rising operation. The force can be reduced.

On the other hand, when descending, the constant force spring is sent out while winding the wire cable 6, but at this time, the constant force spring acts as a holding force for the weight of the window glass, so that a sudden descent can be avoided.

Another embodiment of the invention is shown in FIG. 2 and FIGS. 6 to 8. As shown in FIG. 2, the wire cable on the descending side is replaced by a constant force spring 6' similar to that on the ascending side. In order to prevent twisting between the rising measuring load spring 3 and the falling measuring load spring 6', feeding and winding must be performed on the same plane. The winding bobbins 1 and 2 are each composed of a first bobbin 14 and a second bobbin 15, which are separate bodies, and as shown in FIGS. 6 and 7, a combination of gears 14a, 15a, and 16 is used. This allows the winding and feeding directions to be freely set. If the constant force spring 6' on the downward side becomes slack, a known tensioning device 19 may be used as necessary.

In addition, as shown in FIG. 8, the timing belt 1
8 and a timing pulley 17, it is possible to wind up and unwind a constant force spring on the same plane.

In the method shown in FIGS. 6 and 8 above, since the spiral directions of the upward measuring load spring 3 and the downward measuring load spring 6' are the same, the spiral direction of the upward measuring load spring 3 and the downward measuring load spring 6' is the same, so that The effect can be achieved by installing window glass. Furthermore, in the method shown in FIG. 7, the spiral directions of the upward measuring load spring 3 and the downward measuring load spring 6' are reversed;
Attach each end to the window pane using a book constant force spring.

<Effect> As explained above, according to the present invention, a constant force spring is used to raise and lower an automobile window glass, and the winding torque of the constant force spring is effectively utilized as the weight holding force of the window glass. This has a great effect on reducing the force required for lifting and lowering operations, and since the constant force spring is used not only as an auxiliary means to reduce weight, but also as a direct tension member for the window glass, the structure is simplified and the number of parts is reduced. It has a remarkable effect on Furthermore, there is a high degree of freedom in the position of the handle on the door inner panel, and even if the window area is increased, relatively little operating force is required, so that design constraints can be further reduced.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway front view schematically showing a first embodiment of the present invention. FIG. 2 is an explanatory diagram similar to FIG. 1 showing a second embodiment. FIG. 3 is an enlarged sectional view of essential parts in the first embodiment. Fourth
The figure is an exploded perspective view of FIG. 3. FIG. 5 is a sectional view taken along the - line in FIG. 3. FIGS. 6 to 8 are front views of main parts showing different embodiments of the bobbin configuration in the second embodiment. 1... Handle, 2... Bobbin, 3... Upward measurement load spring, 4... Upper guide roller, 5... Window glass, 6... Wire cable, 6'... Downward measurement load spring, 7... Lower part Guide roller, 8...Rotating shaft, 9...Core, 9a...Opening, 10...Coil spring, 11...Casing, 12...Door panel, 13...Boss, 13a...Protrusion, 14...
First bobbin, 15...Second bobbin, 14a,
15a, 16... Gear, 17... Timing pulley, 18... Timing belt, 19... Tension device.

Claims (1)

[Scope of Claims] 1. A handle rotatably attached to a door inner panel, a bobbin to which a rotational force is applied by the handle, and a spiral wound tightly wound when the bobbin is wound with one end fixed to the bobbin. a constant force spring made of a spring; a window glass is connected to a portion of the constant force spring that is paid out from the bobbin; and by rotating the handle, the constant force spring can be wound onto the bobbin and A window regulator for an automobile, characterized in that the window glass is raised and lowered by feeding.