JP2559681Y2 - Wire type regulator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a wire type regulator used for, for example, a lifting mechanism of a window glass of a vehicle.

"Prior art and its problems" A wire type window regulator known as a kind of a window glass elevating mechanism supports a slider base supporting the window glass so as to be vertically movable by a guide rail, and extends vertically from the slider base. A pair of wires is wound around a winding drum via guide rollers (guide members) provided above and below a guide rail, and the winding glass is driven to rotate, thereby raising and lowering the window glass. Having.

By the way, in order to simplify the operation of removing the slack of the wire performed at the time of assembling the wire type window regulator, the following may be considered. That is, the winding drum is
For example, the main take-up drum and the ratchet plate which are rotatable with respect to each other are divided, and a pair of wires which are fed up and down from the slider base are respectively connected to the main take-up drum and the ratchet plate, respectively. The slack is removed by rotating the ratchet plate relative to each other. And after assembly, rotate the ratchet plate and main winding drum together,
The wire is wound around the outer peripheral surface of the main winding drum.

In order to smoothly wind the wire, it is conceivable to form a continuous spiral wire groove on the outer peripheral surface of the main winding drum. However, since the end of the main winding drum is perpendicular to the axis, the wire groove gradually narrows at the end of the main winding drum and becomes wedge-shaped. For this reason, the wire tends to drop off from the main winding drum toward the ratchet plate at the end of the main winding drum, and is caught between the ratchet plate and the main winding drum.

[Purpose of the Invention] The purpose of the present invention is to obtain a wire type regulator that can stably take up a wire by eliminating problems such as a wire being bitten.

[Summary of Invention] The present invention winds a pair of wires connected to the same driven body around a winding drum, and drives the winding drum in a normal or reverse direction to rotate the driven body. In the wire-type regulator for driving the winding drum, the winding drum is divided into a main winding drum having a spiral wire groove for winding the wire on the outer peripheral surface and a ratchet plate, and an opposing surface of the main winding drum and the ratchet plate. The main winding drum is rotatable relative to the ratchet plate in the winding direction while the main winding drum contacts and separates from the ratchet plate during the winding operation of the wire around the wire groove of the main winding drum. The main winding drum and the ratchet plate are each provided with a locking portion at a tip end of a pair of wires, and the main winding is not performed. The wire groove at the end on the ratchet plate side of the drum is formed in a wedge shape that gradually increases in width so as to be wider than the groove width of the spiral wire groove.

According to this wire type regulator, winding the wire around the winding drum and adjusting the entire length of the wire (removal of wire play) can be easily performed by relatively rotating the main winding drum and the ratchet plate in the wire winding direction. be able to. The wire groove of the main winding drum has a wedge shape that gradually increases in width at the end on the winding plate side so as to be wider than the groove width of the spiral wire groove. It is wound up stably. Therefore, even if the ratchet plate and the main winding drum are separated in this winding state, the wire does not fall off.

"Embodiments of the Invention" The present invention will be described below with reference to the illustrated embodiments. FIG. 11 shows the overall structure of a wire-type window regulator. A slider rail 11 is supported on a guide rail 10 fixed to a reinforcing member in a door so as to be able to move up and down. A window glass (not shown) is fixed to the slider base 11. Wires 12 and 13 extending vertically along the guide rail 10 are fixed to the slider base 11, and the wires 12 and 13 are bent by guide members 14 and 15 provided at the upper and lower ends of the guide rail 10. Guided.
After leaving the guide members 14 and 15, the wires 12 and 13 enter the guide cables 16 and 17 and are guided to the wire type regulator 20. The present invention is characterized by this wire type regulator 20.

As shown in FIG. 1, the wire type regulator 20 has a housing case 21 fixed to a support member in a door, and a tubular portion 21a formed in the housing case 21 has
A take-up drum 22 composed of a main take-up drum 22A and a ratchet plate 22B (take-up plate) is rotatably supported.

As shown in FIGS. 1 to 4, the main winding drum 22A is provided with a spirally continuous wire groove on the upper peripheral surface of the flange 24 in the drawing.
23, and the peripheral surface below the flange 24
25 spring holding surfaces 26 are provided. The shaft portion of the main winding drum 22A has a shaft hole 28 through which the handle shaft 27 is inserted, and a rotation support hole 50 formed above the shaft hole 28. Main winding drum 22
A is as shown in FIG. 2 when viewed from above. That is, the outer peripheral surface has the drum-side joining surface 52, and the inner peripheral side of the drum-side joining surface 52 has the drum-side ratchet teeth 51.

Although the wire groove 23 is formed to have the same width from the bottom to the top in FIG. 1, the wire groove 53 at the uppermost end, that is, the groove for about one turn adjacent to the ratchet plate 22B is the other wire groove 23. And its width is different. Ie wide wire groove
52, as shown in FIG. 3, when the wire groove 23 is formed to have the same width toward the upper part of FIG. 1, the boundary c constituting the uppermost wire groove is removed and gradually widened. It is wedge-shaped in the unfolded state (see FIGS. 4 to 6). As a result, the wire 12 for about one turn can be stably wound and held on the upper end of the main winding drum 22A. Therefore, at the moment when the ratchet plate 22B separates from the main winding drum 22A at the time of an assembling operation or the like, it is possible to prevent a problem that the wire 12 of about one turn falls off to the ratchet plate 22B side.

As shown in FIGS. 7 to 9, the ratchet plate 22B has a disk portion 54. The disk portion 54 is formed with a ratchet plate projecting portion 56 projecting up and down and a rotating shaft portion 55. I have. The ratchet plate 22B has a rotation shaft portion 55 fitted in the rotation support hole 50 of the main winding drum 22A so as to be relatively rotatable. The ratchet plate 22B has a winding portion (locking portion) 57 on the back surface of the outer peripheral edge of the disk portion 54, and the drum side joining surface 52 of the main winding drum 22A on the back surface on the inner peripheral side of the winding portion 57. And a plate-side joining surface 59 that joins the plate. Plate-side ratchet teeth 60 are formed on the inner surface of the back surface of the ratchet plate 22B, further inside the plate-side joint surface 59.

As shown in FIG. 10, the drum-side ratchet teeth 51 and the plate-side ratchet teeth 60 are each formed in a rotationally symmetric sawtooth shape, and the pitch is the same between the drum-side ratchet teeth 51 and the plate-side ratchet teeth 60. ing. The drum-side joining surface 52 is configured to be located on the same plane as the tip of the drum-side ratchet teeth 51. The plate-side ratchet teeth 60 are formed so as to protrude below the same plane as the plate-side joint surface 59. Drum side joining surface 52
The plate-side joint surface 59 is joined to the bottom side, and the plate-side ratchet teeth 60 are engaged with the drum-side ratchet teeth 51 (each back surface 60B and the back surface 51B are engaged), and the bottom portion 60A of the plate-side ratchet teeth 60 is engaged. Is set so that a gap is opened only between the tip of the ratchet tooth 51 and a. In this state, the inclined surface 60C of the plate-side ratchet teeth 60 and the inclined surface 51C of the drum-side ratchet teeth 51 are set so that a gap is opened by b.

The winding section 57 of the ratchet plate 22B and the main winding drum 2
One ends of the wires 13 and 12 and the other end thereof are locked to 2A, respectively. At the ends of the wires 12 and 13, locking pieces 12e and 13e are fixed as shown in FIG.
Locking piece 12e on 22A, locking piece 13e on ratchet plate 22B
Are locked respectively. Thus, when the winding drum 22 is driven to rotate to either one of the wires 12, one of the wires 12 and 13 is wound around the winding drum 22 so that one is wound and the other is unreeled.

The handle shaft 27 can be connected to a manual or electric rotary drive mechanism. The brake mechanism 25
When a rotational force is applied to the handle shaft 27, the rotation is transmitted to the main winding drum 22A, and the handle shaft 27 is not rotated by the rotating force applied to the main winding drum 22A. Since this mechanism is not related to the gist of the present invention, detailed description is omitted, but basically,
When the main take-up drum 22A tries to rotate, the brake spring 38 expands in diameter and comes into close contact with the base plate 39, and when the handle shaft 27 tries to rotate, the brake spring 38 contracts and reduces friction with the base plate 39. Unwinding and rotation of the main winding drum 22A are permitted.

After the winding of the wire (adjustment of the length) by the device of the present invention, the ratchet plate
22B ratchet plate protrusion 56 (handle shaft 2
It is attached to 7), and acts to offset the weight of the driven body (window glass in this example) and make the operating force for ascending and descending substantially equal. The wire type regulator 20 having the above-described configuration is different from the conventional product in that guide members 14 and 15 are fixed before and after the guide rail 10 shown in FIG.
While guiding 2, 13
Raise to the top of guide rail 10. The balance spring 45 of the wire type regulator 20 and its spring case 46 are removed. The state in which the slider base 11 is raised to the uppermost position is a state in which the lower wire 13 is pulled out most from the winding drum 22, and the locking piece 13e at the distal end of the wire 13 in this state is as loose as possible on the ratchet plate 22B. Lock without. On the other hand, the upper wire 12 is in the most slack state.

In this state, the ratchet plate 22B is fixed using, for example, an appropriate jig, and then the handle shaft 27B is fixed.
, The main winding drum 22A is rotated in the direction of winding the wire 12 (for example, the direction of arrow A in FIG. 10). Then
Since the main winding drum 22A rotates with respect to the ratchet plate 22B, the inclination 60 of the sawtooth plate-side ratchet teeth 60 is increased.
The drum-side ratchet teeth 51 rise up along C, mesh with the next tooth beyond the plate-side ratchet teeth 60 by one peak, and this is repeated, whereby the main winding drum 22A rotates.

Thereby, the main winding drum 22A relatively rotates with respect to the fixed ratchet plate 22B. Therefore,
The wire 12 is wound around the wire groove 23 on the outer periphery, and finally, the slack of the wire 12 is completely removed. At this time, the wire 12 wound around the upper end portion of the wire groove 23 in FIG. 1 is stably wound around the wide wedge-shaped wire groove 53. Therefore, in this winding state, even if the ratchet plate 22B and the main winding drum 22A are separated from each other, even if the wire 12 is
Will not fall off and be caught between them.

Then, after the wire 12 is completely wound and the slack is removed, when the turning power applied to the handle shaft 27 is released, the main winding drum 22A tries to rotate in the direction B opposite to the arrow A. However, when the main take-up drum 22A tries to rotate in the direction of arrow B, the back of the drum-side ratchet teeth 51
Since 51B is engaged with the back surface 60B of the plate-side ratchet teeth 60, the drum-side ratchet teeth 51 and the plate-side ratchet teeth 51 are engaged.
60 and completely mesh. As a result, the relative rotation of the main winding drum 22A with respect to the ratchet plate 22B is prevented,
Looseness of the wire 12 is prevented.

After the above slack removal is completed,
Insert the center of 45 into the slit 62 at the tip of the ratchet plate protrusion 56, and apply an appropriate balance rotation force by the balance spring 45 to the handle shaft 27 (main winding drum 22A).
, The spring case 46 is fixed to the housing case 21.

Since the ratchet plate projecting portion 56 is rotated in the normal or reverse direction thereafter, the main take-up drum 22A and the ratchet plate 22B always rotate integrally, and the wires 12 and 13 are connected to one another. It is wound up and unwound on the other hand.

In the assembled state, the drum-side joining surface 52 and the plate-side joining surface 59 are joined together, and the drum-side joining surface
The tip of the drum-side ratchet teeth 51 has a gap a with respect to the bottom 60A of 52, and the inclined surface 60C of the plate-side ratchet teeth 60 has
And the inclined surface 51C of the drum-side ratchet teeth 51 have a gap b, so that even if there is some variation in the accuracy of the plate-side ratchet teeth 60 or the drum-side ratchet teeth 51, this variation is reduced to the gap a. , B. Therefore, the ratchet teeth 51 and 60 do not need to be so high in accuracy, so that the burden of manufacturing the product can be reduced.

In the embodiment described above, the ratchet plate 22B is fixed and the main winding drum 22A is rotated, so that the wire 12
The slack was removed, but this relationship could be reversed.

[Effects of the Invention] As described above, according to the wire regulator of the present invention, the wire is wound around the winding drum by rotating the main winding drum and the ratchet plate relatively in the wire winding direction during assembly. Work can be performed easily. That is, the wire groove of the main winding drum has a wedge shape that gradually widens at the end on the ratchet plate side so as to be wider than the groove width of the spiral wire groove. Even when the main winding drum is rotated relative to the ratchet plate, the wire can be stably wound without falling off even if the main winding drum comes in contact with or separates from the ratchet plate.

[Brief description of the drawings]

FIG. 1 shows an embodiment of a wire type window regulator to which the present invention is applied. FIG. 1 is a sectional view taken along the line II of FIG. 11, and FIGS. 2 to 4 show a main winding drum. 2 is a plan view thereof, FIG. 3 is a front view thereof, FIG. 4 is a cross-sectional view thereof, FIG. 5 is a cross-sectional view showing an enlarged wide wire groove, and FIG. 7 to 9 show a ratchet plate, FIG. 7 is a bottom view thereof, FIG. 8 is a plan view thereof, FIG. 9 is a front sectional view thereof, FIG. The figure is an enlarged cross-sectional view of a main part showing a state where the ratchet teeth of the main winding drum side and the ratchet plate side are engaged with each other. FIG. 11 is a front view of the entire wire type wind regulator, and FIG. It is a perspective view which shows the example of a front-end | tip part shape. 10… Guide rail, 11… Slider base, 12,13…
… Wires, 12e, 13e …… locking pieces, 14,15 …… guide members,
16, 17: Guide cable, 20: Wire regulator, 21: Housing case, 21a: Cylindrical part, 22:
Take-up drum, 22A …… Main take-up drum, 22B …… Ratchet plate, 23 …… Wire groove, 25 …… Brake mechanism, 27…
… Handle shaft, 39 …… base plate, 45 …… balance spring, 46 …… spring case, 50 …… rotation support hole, 51 …… drum side ratchet teeth, 52 …… drum side joining surface, 53 …… wedge-shaped wide Wire groove, 54 ... Disc part, 55
…… Rotating shaft, 56 …… Ratchet plate protrusion, 57…
... Rewinding part, 59 ... Plate side joint surface, 60 ... Plate side ratchet teeth.

Claims (1)

(57) [Scope of request for utility model registration] An end of a pair of wires connected to the same driven body is wound around a winding drum, and the driven body is driven by rotating the winding drum forward and reverse. In the wire regulator, the winding drum is divided into a main winding drum and a ratchet plate having a spiral wire groove for winding a wire on an outer peripheral surface, and the main winding drum and a ratchet plate are respectively opposed to the main winding drum and the ratchet plate. With the provision of ratchet teeth, during the operation of winding the wire around the wire groove of the main winding drum, the main winding drum can be relatively rotated in the winding direction while approaching and separating from the ratchet plate according to the ratchet teeth. The main winding drum and the ratchet plate are each provided with a locking portion at the tip of the pair of wires so that relative rotation in opposite directions cannot be performed. A wire regulator, wherein a wire groove at an end of the main winding drum on the ratchet plate side is formed in a wedge shape that gradually widens so as to be wider than a spiral wire groove.