JPH0642073Y2 - Vehicle window regulator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a vehicle window regulator.

[Conventional technology]

2. Description of the Related Art As a window regulator for a window plate that slides up and down or front and back for a vehicle, there is one that locks the window plate on a wire or the like arranged in a door panel and slides it up and down or front and back.

FIG. 4 is a front view showing a part of the conventional window regulator shown in Japanese Utility Model Publication No. 60-41467. This window regulator supports an oscillating arm 3 having guide members 1 and 2 at both ends on a stationary portion so as to be rotatable only in one direction via a one-way clutch 4, and is locked to the guide members 1 and 2. A cord tensioning device 7 having a biasing spring 6 that biases the swing arm 3 in a rotatable direction that applies tension to the cord 5 is disposed in the middle of the path of the cord 5. One-way clutch 4
The clutch spring 9 is wound around the fixed shaft 8 fixed to the rotating shaft of the swing arm 3, and one end of the clutch spring 9 is locked to the swing arm 3 as the folding portion 10. 6
Rotation in the direction biased by the clutch spring 9
Although it rotates easily due to the loosening direction, rotation in the opposite direction is blocked due to the tightening direction of the clutch spring 9.

[Problems to be solved by the device]

However, in such a conventional window regulator, the clutch spring 9 is fixed by inserting the folded portion 10 at one end of the spring into the hole provided in the swing arm 3, and the clutch spring 9 is also fixed. Has a double structure in which the biasing spring 6 is provided outside the clutch spring 9, so that when the clutch 4 is actuated by the clutch spring 9, external force is not returned to the end of the clutch spring 9. Department
Concentrated on 10, the clutch force depends on the shear resistance of the spring material. Further, when an external force acts on the clutch spring 9 in the tightening direction, the end of the biasing spring 6 may come off. Furthermore, the structure is complicated because it has a double structure of the clutch spring 9 and the biasing spring 6, and the manufacturing is not easy. Since the torsion spring is adopted as the biasing spring 6, the tension applied to the cord 5 is adjusted. There were problems such as trouble.

In order to solve such conventional problems, the purpose of the present invention is to incorporate the clutch spring into the clutch mechanism so that the clutch spring is closely wound, and to generate the clutch force on the outer circumference of the clutch spring. It is an object of the present invention to provide a window regulator for a vehicle in which a compression force acts on the clutch spring, a large clutch force is obtained, and the tension of the biasing spring can be easily adjusted.

[Means for Solving the Problems]

This invention relates to a window regulator in which a window plate is locked and slid on a cord arranged in a door panel, a first guide member for guiding the cord, and a coaxial guide with the first guide member. One-way clutch, a swing arm that is swingable in one direction by the one-way clutch, a second guide member provided at the tip of the swing arm, and a biasing force that pulls the swing arm. The one-way clutch includes a cord tension device having a spring, and the one-way clutch is continuously formed inside the fixed shaft and the rotating body, which is rotatably attached to the fixed shaft and to which the swing arm is attached. And a coil-shaped clutch spring housed so that the outer periphery of the spring housing chamber is in close contact with the inner wall of the spring housing chamber.

[Action]

In the vehicle window regulator of the present invention, the window plate slides as the cord moves through the guide member.
Since the swing arm is pulled by the urging spring and the one-way clutch swings the swing arm in only one direction, there is no swing of the swing arm in the opposite direction due to excessive load. , The cord stays tense. Since the outer circumference of the clutch spring is in close contact with the inner wall of the spring chamber in the one-way clutch, the clutch spring is prevented from rotating in the expanding direction, and the clutch spring is allowed to rotate in the loosening direction. Swing the arm in only one direction.

〔Example〕

An embodiment of this invention will be described below. FIG. 1 is a configuration diagram showing a window regulator of the embodiment, FIG. 2 is a front view of the cord tensioning device, and FIG. 3 is a side view showing a part thereof in section. Indicates the same or corresponding part.

Reference numeral 11 denotes a sliding window, which is provided on the upper portion of the door 12 and includes a fixed window plate 14 attached to the sash 13 and a sliding window plate 15 that slides back and forth. The sliding window plate 15 is slidable by engaging a connecting member 17 fixed to the endless cord 5 with a window plate holder 16 attached to the lower end. To avoid the roll-in prevention window 18 provided at the bottom of the door 12,
A drive device 19 is provided inside the door 12.

The rope 5 is guided by guide members 21, 22, 23 such as reels and is moved by a drive device 19. 24 is a conduit.

The drive device 19 includes a take-up bobbin 25 that winds the rope 5, a drive unit 27 such as a motor that drives the take-up bobbin 25 via a speed reducing mechanism 26 such as a worm and a gear, and a rope tensioning device 7. These are attached to the bracket 29. Line 5
Both end portions of are fixed to the winding bobbin 25. The rope tensioning device 7 includes the guide member 1 attached to the bracket 29,
A one-way clutch 4 mounted coaxially with the guide member 1,
An oscillating arm 3 that can be oscillated only in one direction by a one-way clutch 4, a guide member 2 provided at the tip of the oscillating arm 3, and an urging spring made up of a coil spring that pulls the oscillating arm 3. It consists of 6 and 6.

The one-way clutch 4 is composed of a fixed shaft 8 fixed on a bracket 29 and a rotating body 33 having a connecting concave portion 32 for connecting to a connecting convex portion 31 of the fixed shaft 8 in the axial longitudinal direction. A spring accommodating chamber 34 is continuously formed at the center of the rotating body 33 for accommodating and accommodating the clutch spring 9 on the outside thereof. The guide member 1 is rotatably attached to the outer periphery of the fixed shaft 8, and a swing arm 3 that swings in synchronization with the rotation of the rotor 33 is fixed to the rotor 33. The guide member 2 is rotatably fixed to the tip of the swing arm 3 by a fixing pin 35. A spring locking portion 36 is formed at the arm end of the swing arm 3, and the biasing spring 6 is locked between the spring locking portion 37 formed on the bracket 29 and Y.
Biased in the direction. The rotating body 33 has a fixed pin 38 on the fixed shaft 8.
Thus, it is mounted in the axial direction, and is fixed so as to be restrained only in the longitudinal direction of the shaft and not to be restrained in the rotating direction of the rotating body 33. In FIG. 2, when the swinging arm 3 tries to rotate clockwise about the fixed shaft 8 in FIG. 2, the winding diameter of the clutch spring 9 spreads over the built-in clutch spring 9, which causes the clutch spring 9 to rotate. Outer circumference and spring accommodating chamber
The winding direction is selected so that friction occurs between the inner walls of 34 and the clutch function works. In this way, in the one-way clutch 4, the swing arm 3 pulls the biasing spring 6 in the pulling direction (Y direction).
It is allowed to oscillate, and the oscillating in the opposite direction is prevented.

In the above configuration, when the drive unit 27 is started, the reduction mechanism
The take-up bobbin 25 rotates via 26, and the cord 5 starts moving. Since an excessive load is applied to the rope 5 at the time of starting, in the tensioning mechanism including only the biasing spring 6, the biasing spring 6
Since it swings in the direction opposite to the Y direction against the tensile force of, the opening and closing time delay, impact, noise, etc. occur, but in the present invention, the one-way clutch 4 prevents the swing in the direction opposite to the Y direction. Therefore, there is no time delay, impact, noise, etc. Further, the looseness of the cord 5 due to the elongation of the cord 5 is pulled by the urging spring 6 to be eliminated, and the cord 5 maintains the tensioned state. The window plate holder 16 that engages with the connecting member 17 by the movement of the cord 5
Moves with the sliding window plate 15, and the sliding window plate 15 opens and closes.

In the cord tension device 7, a constant tension is applied to the cord 5 by the urging spring 6, which causes the slack caused by the repeated sliding of the cord 5 or the abrasion of each guide member. It has the purpose of being absorbed by the biasing spring 6. Here, a load larger than the spring force of the urging spring 6 is applied to the cord 5, for example, when the sliding window plate 15 moves to the right side in FIG. Rotational torque that tends to rotate in the opposite Y direction is generated. At this time, the clutch spring 9 generates a clutch force to prevent the swing arm 3 from rotating in the opposite Y direction. Therefore, since the cord 5 moves while maintaining the state shown in FIG. 2, power can be transmitted without delay in response.

In the above-mentioned cord tension device 7, the clutch spring 9 is closely wound around the spring accommodating chamber 34, and the biasing spring 6 is used as a coil spring separately from the clutch spring 9. Therefore, the structure is simple and the clutch spring is 9 is easy to make. Further, the tension of the biasing spring 6 can be easily adjusted, and the biasing spring 6 can be easily changed, so that a large clutch force can be obtained with a small coil spring.
Further, since the clutch spring 9 is built in the fixed shaft 8,
The guide member 1 can be attached to the outside of the fixed shaft 8. Therefore, the rope tensioning device 7 can be easily manufactured from a small size to a large size.

[Effect of device]

As described above, according to the present invention, the clutch spring is built in the clutch mechanism so as to be closely wound, and the clutch force is generated on the outer circumference of the clutch spring, so that the compression force acts on the clutch spring. A large clutch force can be obtained, and the tension of the biasing spring can be easily adjusted.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing a window regulator of the embodiment, FIG. 2 is a front view of the cord tensioning device, FIG. 3 is a side view showing a part of the device in cross section, and FIG. 4 is a front view of a conventional example. Is. In each figure, the same reference numerals indicate the same or corresponding parts, 1, 2, 2
1, 22 and 23 are guide members, 3 is a swing arm, 4 is a one-way clutch, 5 is a cord, 6 is a biasing spring, 7 is a cord tensioning device, 8
Is a fixed shaft, 9 is a clutch spring, 11 is a sliding window, 13 is a sash, 19 is a drive device, 25 is a take-up bobbin, 27 is a drive unit,
33 is a rotating body and 34 is a spring accommodating chamber.

Claims (1)

[Scope of utility model registration request] 1. A window regulator in which a window plate is locked and slid on a cable provided in a door panel, a first guide member for guiding the cable, and the first guide member is mounted coaxially with the first guide member. One-way clutch, a swing arm that is swingable in one direction by the one-way clutch, a second guide member provided at the tip of the swing arm, and a biasing force that pulls the swing arm. The one-way clutch includes a cord tension device having a spring, and the one-way clutch is continuously formed inside the fixed shaft and the rotating body, which is rotatably attached to the fixed shaft and to which the swing arm is attached. And a coil-shaped clutch spring housed in such a manner that the outer periphery is in close contact with the inner wall of the spring housing chamber.