JPH0218227Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an improvement of an automobile window regulator.

(Prior art and its problems) Conventionally, upper and lower pulleys are attached to the upper and lower parts of a guide member that guides the window glass holding member up and down.
A drum is placed on the side between the upper and lower pulleys, and a wire is stretched between the drum and the upper and lower pulleys in a substantially triangular shape, and the holding member is moved up and down via the wire by rotation of the drum using a handle, etc. A window regulator that opens and closes a door glass has been proposed.

By the way, window regulators that use wires require some loosening during assembly, but if this looseness remains, the window glass will not move up and down smoothly.
It has been proposed to take up this slack after assembly (for example, West German Publication No. 2215222).

However, during long-term use, the wires may stretch and loosen, and in such cases, the loosening cannot be taken up, so there is a risk that the window glass will not move up and down smoothly. It was hot.

(Purpose of the invention) The present invention was made in view of the above-mentioned conventional problems, and is designed to constantly absorb the loosening of the wire when the window glass is lowered, and to keep the window glass smooth over a long period of time. The purpose is to guarantee lifting and lowering.

(Structure of the invention) For this reason, the present invention makes the drum body of the drum
A support member is connected to a drum shaft rotatably supported by a brake drum, and a support member is loosely fitted into the hollow part of the drum body, so that the boss part of the drum body and the boss part of the support member rotate in one direction. At the same time, the wire end of the wire on the lower pulley side is fixed to the drum body, the wire end on the upper pulley side is fixed to the support member, and one end of the wire is fixed to the support member. The present invention is characterized by providing a spiral spring that is hooked to the spring case and whose other end is hooked to the support member to urge the wire on the upper pulley side in the tensioning direction where the friction brake coil spring is not constrained. It is something to do.

(Operations and Effects of the Invention) In the present invention, a friction brake coil spring is wound around the boss part of the drum body to which the wire on the lower pulley side is fixed, and the boss part of the support member to which the wire on the upper pulley side is fixed. Since the wire on the upper pulley side is biased in the tensioning direction via the support member by a spiral spring that assists the operating force of the handle, the spiral spring is used in combination with the unidirectional rotation of the friction brake coil spring. Looseness of the wire on the upper pulley side can be constantly absorbed by the biasing rotational force of the support member, so that the window glass can be smoothly raised and lowered over a long period of time after the drum is assembled. Also, compared to the type that uses a ratchet, there is no play, so the wire can be stretched steplessly.

(Embodiments) Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 1, a window regulator for an automobile door 1 includes a bar-shaped guide member 5 that vertically guides a holding member 4 to which the lower part of a window glass 2 is fixed with screws 3, 3. An upper bracket 6 is fixed to the upper part of the guide member 5, and a lower bracket 7 is fixed to the lower part of the guide member 5, and the guide member 5 is fixed to the door inner plate through screw holes 6a and 7a of both brackets 6 and 7. Install.

The upper bracket 6 rotatably supports an upper pulley 9 through a shaft 8, and the lower bracket 7 rotatably supports a lower pulley 11 through a shaft 10.

The drum 12 placed laterally between the upper and lower pulleys 9 and 11 is, as shown in FIGS. 2 and 3,
A boss portion 13a of a hollow drum body 13 is rotatably fitted to a drum shaft 15 rotatably supported by a brake drum 31 fixed to a casing 14. The drum shaft 15 is equipped with a brake shoe 33.
is fixed, and a brake spring 16 is wound around the inner circumferential surface of the brake drum 31 so that the outer circumferential surface of the brake spring 16 comes into contact with the inner circumferential surface of the brake drum 31. A spring hanger 32 located at is fixed.

Although not specifically shown, the notch 33a of the brake shoe 33 and the spring hanger 3
Both ends of the brake spring 16 are exposed between the brake spring 16 and the brake spring 16.

Therefore, by operating the handle 17, the drum shaft 1
5 rotates and pushes the spring hanger 32 with the brake shoe 33, so that the drum body 1
3 is rotated in the operating direction of the handle 17.

When the brake spring 16 pushes the spring hanger 32 from the brake shoe 33 side, its end comes into contact with the notch 33a of the brake shoe 33 and its diameter is reduced, so that no brake is applied to the inner peripheral surface of the brake drum 31. However, when pushing the brake shoe 33 from the spring hanger 32 side,
The end portion contacts the spring hanger 32 and expands in diameter, and a brake is applied to the inner circumferential surface of the brake drum 31.

Therefore, the handle 17 does not rotate due to the weight of the window glass 2 or the like. Note that the configurations of the brake spring 16, brake shoe 33, spring hanger 32, etc. are publicly known (Jikkosho 53
-Refer to Publication No. 8097).

The casing 14 has holes 14a,..., 14a.
Attach to the inner panel of the door.

A support member 18 is provided in the hollow portion 34 of the drum body 13, and a boss portion 18a is rotatably fitted to the drum shaft 15, and is loosely fitted to the inner peripheral surface of the drum body 13.

The boss portion 13a of the drum body 13 and the boss portion 18a of the support member 18 are the boss portions 13a, 18a.
The inner diameter of the friction brake coil spring 19 is made slightly smaller than the outer diameter of the friction brake coil spring 19, and the friction brake coil spring 19 is tightly wound so as to generate a friction braking force. The winding direction is set so that when attempting to rotate (clockwise), the diameter expands to allow rotation, and in the opposite direction, the diameter contracts and becomes impossible to rotate.

The drum body 13 has one end 22a fixed to the holding member 4 and the other end 22b of the lower wire 22, which is wound around the lower pulley 11, and the supporting member 18 has one end 21a fixed to the holding member 4. The other end 21b of the upper wire 21, which is fixed to the upper pulley 9 and wound around the upper pulley 9, is fixed.

Between the lower bracket 7 and the casing 14 and between the upper bracket 6 and the casing 14,
Guide tube 2 covering each wire 21, 22
5 and 26 (see Figure 1).

A spring case 27 is fixed to the outer end surface of the casing 14, and a spiral spring 28 is fitted into the spring case 27.
8a to the spring case 27, and the inner end 28b
is hooked to the spring locking portion 18b of the support member 18, and the wire 2 on the upper pulley side is connected via the support member 18.
1 in the tensioning direction.

The spiral spring 28 is connected to the window glass 2.
is charged by operating the handle 17 when descending,
The release is performed to assist the operating force of the handle 17 when the window glass 2 is raised.

If the window regulator is configured as described above, when the handle 17 is rotated in the downward direction D of the window glass 2, the wire 21 is unwound from the drum body 13, and the wire 22 is unwound from the drum body 1.
3 and the window glass 2 is lowered. At this time, the spiral spring 28 is connected to the wire 2
It is charged by the support member 18 rotated by 1 and 22.

When the window glass 2 is lowered to the lowest position, the wire 21 is loosened and the wire 22 is tensioned, and the charged spiral spring 28 causes the support member 18 to expand the diameter of the friction brake coil spring 19 by the amount of the slack in the wire 21 and tension it. direction, and the loosened wire 21 is automatically tightened.
Since the diameter of the friction brake coil spring 19 is reduced in the direction in which the support member 18 rotates in the opposite direction, rotation is locked.

Next, when the handle 17 is rotated in the upward direction U of the window glass 2, the wire 21 is wound around the drum body 13 with no looseness, and the wire 22 is unwound from the drum body 13 and the wire 22 is unwound from the drum body 13, and the wire 22 is unwound from the drum body 13. Glass 2 is raised. At this time,
The spiral spring 28 is released and the biasing force allows the window glass 2 to be raised easily.

Even if the wire 21 stretches and loosens while the window glass 2 is repeatedly raised and lowered by the handle 17, it is automatically re-tensioned each time the window glass 2 is lowered to its lowest position. There is no rattling when going up and down.

[Brief explanation of the drawing]

FIG. 1 is a front view of a window regulator according to the present invention, FIG. 2 is a sectional view of a drum according to the present invention, and FIG. 3 is an exploded perspective view of the drum according to the present invention. 1...door, 2...window glass, 4...
Holding member, 5... Guide member, 9... Upper pulley, 1
DESCRIPTION OF SYMBOLS 1...Lower pulley, 12...Drum, 13...Drum body, 13a...Boss part, 14...Casing, 15...Drum shaft, 17...Handle, 18
... Support member, 18a ... Boss part, 18b ... Spring locking part, 19 ... Friction brake coil spring, 21, 22 ... Wire, 27 ... Spring case, 28 ... Spiral spring, 31 ... Brake Drum, 32...Spring hanger, 33...Brake shoe, 34...Hollow part.

Claims (1)

[Claims for Utility Model Registration] A guide member for vertically guiding a window glass holding member, upper and lower pulleys attached to the upper and lower parts of the guide member, a drum disposed laterally between the upper and lower pulleys, and In an automobile window regulator, a drum and a wire stretched in a substantially triangular shape are provided between a drum and an upper and lower pulley, and a holding member is moved up and down via the wire as the drum rotates. A support member is connected to a drum shaft rotatably supported by a brake drum, and a support member is loosely fitted into the hollow part of the drum body, so that the boss part of the drum body and the boss part of the support member rotate in one direction. At the same time, the wire end of the wire on the lower pulley side is fixed to the drum body, the wire end on the upper pulley side is fixed to the support member, and one end of the wire is fixed to the support member. The present invention is characterized by providing a spiral spring that is hooked to the spring case and whose other end is hooked to the support member to urge the wire on the upper pulley side in the tensioning direction where the friction brake coil spring is not constrained. Automotive window regulator.