JPH052781Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a window regulator for an automobile, and more particularly to a wire-driven window regulator.

(Prior art and its problems) In automotive window regulators, from the viewpoint of reducing size and weight, instead of the conventional arm type, a type in which the drive device and the window glass support bracket are connected by wire is used. Various methods have already been proposed. However, in such a wire-type window regulator, if permanent elongation (elongation due to plastic deformation) occurs in the wire due to changes over time, the ability of the window glass to follow the movement of the drive device will deteriorate, and the window glass may be damaged. Problems arise in that the support cannot be stably supported at a desired position. As a countermeasure against this problem, there is a method of providing a tension pulley to absorb the elongation of the wire and moving the tension pulley according to the elongation of the wire. However, with this method, the pulley must be moved by an operator, making the adjustment work complicated.

Therefore, a drive device has been proposed to automate the absorption of wire elongation.
-Refer to Publication No. 17473). That is, the drive device includes a pair of drums having each end of a wire wound in opposite directions on each outer periphery and having mutually engaging ratchet teeth on opposing surfaces, one of the drums being disposed relative to the drive shaft. The other drum is non-rotatably fitted to the drive shaft so that it can rotate relative to the drive shaft, and when the wire is stretched, it rotates relatively in the direction of absorbing the wire stretch when winding or unwinding the wire, thereby absorbing the slack in the wire. It is set to be automatically excluded. However, in the above device, if such a winding failure occurs in the wire, for example, there is a problem in that one drum rotates relative to the other drum in a direction that is not originally permissible, that is, in a direction in which the wire becomes loose. Therefore, in order to avoid the above-mentioned problems, the present applicant has provided a glass support means for supporting the window glass, a guide means for slidingly guiding the glass support means, a wire means for connecting the glass support means and the drive means, and A drive means is provided for sliding the glass support means along the guide means via the wire means, the drive means being a drive shaft, one end of the wire means being wound around and fitted to the drive shaft in a relatively non-rotatable manner. a second drum around which the other end of the wire means is wound and relatively rotatably fitted to the drive shaft; A recessed portion whose radial width gradually increases toward one side in the circumferential direction is provided on one side, and the rolling means is disposed within the recessed portion, thereby removing the slack of the wire means of the drive shaft relative to the second drum. He came to propose a window regulator that was characterized by allowing only relative rotation.
107082 and Utility Model Application Publication No. 107083).

(Object of the invention) An object of the invention is to provide a new configuration of a driving means used in the window regulator.

(Structure of the Invention) The present invention includes a glass support means for supporting a window glass, a guide means for slidably guiding the glass support means, a wire means for connecting the glass support means and a driving means, and a wire means for connecting the glass support means and a driving means. In a window regulator equipped with a drive means for sliding the glass support means along a guide means, the drive means is connected to a case 50 and a balance located at the bottom of the case and whose outer peripheral end is locked to the case. a spring 51; an upper drum 52 having an engaging portion 52c and an engaging protrusion 52d, the lower part of which engages with the inner peripheral end of the balance spring, and the upper part of which is engaged with one end of the wire means; Engaging protrusion 52d of drum
The wire means is wound on the side surface, and the other end of the wire means is engaged on the top surface of the engaging portion 53b, the drive shaft 56, and the brake. The lower drum 53 has an engagement protrusion 53d that engages through the shoe 57.
The lower drum 53 rotates in conjunction with a drive shaft 56, and fixes one end of the wire means to raise and lower the glass support means.The lower drum 53 rotates in conjunction with the drive shaft 56, and winds up one of its intermediate portions while fixing one end of the wire means to raise and lower the glass support means. The upper drum 52, which can be unwound and fixes the other end of the wire means, is rotated by a balance spring 51 in the upward direction of the glass support means, and the upper and lower drums 52,
53 are rotatable in the same direction by engagement between the arcuate play groove 53e and the engaging protrusion 52d, and when the lower drum 53 is rotated against the biasing force of the balance spring 51, a wire near the upper drum 52 is rotated. As the amount of winding decreases, the upper drum 52 is configured such that its engaging protrusion 52d rotates in the arcuate play groove 53e in a direction opposite to the rotational direction by the biasing force of the balance spring 51. When rotating the drum 53 in the direction of the biasing force of the balance spring 51, the biasing force of the balance spring 51 causes the upper drum 52 to rotate following the lower drum 53, and the biasing force of the balance spring rotates the upper drum 52 with respect to the lower drum 53. 52 is relatively rotatable according to the slackness of the wire, and is located around the lower drum 53 and slides and guides the wire wound around the side surface of the drum.
4, and a block spring 55 that engages with the engagement protrusion 53d of the lower drum 53 via the brake shoe.
and the drive shaft 56 together with the brake spring 55.
A brake drum 58 containing a brake shoe 57 and a cover 59 are provided, from which the brake spring 55, lower drum 53, and upper drum 52
It is characterized in that a drive shaft 56 is inserted through the bottom of the case.

(Operations and Effects of the Invention) According to the invention, as shown in FIG. 14, one end of the wire means is fixed and one end of the intermediate portion of the glass support means is wound up while the other wire means is moved up and down. The lower drum 53 that can be unwound and the other end of the wire means are fixed, and the balance spring 51
An arcuate idle groove 5 extending in the circumferential direction formed on the bottom surface of the lower drum 53 overlaps the upper drum 52 which is rotationally biased in the upward direction of the glass support means.
3e and an engaging protrusion 52d on the upper surface of the upper drum 52.
As shown in FIG. 15, when the glass support means is in the raised position and it is attempted to lower it,
Normally, the winding amount of the wire on the winding side and the winding side of the lower drum is the same, so the lower drum 53 and the upper drum 52 rotate as one unit due to the winding force of the wire (see Figures 15 a to c). . At this time, balance spring 5
Since the drum 1 rotates in a direction that involves the inner peripheral end thereof, the lower drum 53 is rotated against the biasing force of the balance spring 51. Next, when the number of windings on the unwinding side near the upper drum 52 decreases (FIG. 15 d), the upper drum 52 begins to rotate in the opposite direction to the above rotational direction due to the biasing force of the balance spring 51 and engages. When the protrusion 52d comes into contact with the end of the arcuate play groove 53e (see FIG. 15e), when the drive shaft 56 is further rotated, the arcuate play groove 53e contacts the engagement protrusion 52.
The upper drum 52 is rotated while in contact with the upper drum 52.

On the other hand, since the number of wire turns on the upper drum side is small in the lowered position, when the lower drum 53 is rotated in the direction of raising the glass support means, the balance spring 51
The lower drum 53 and the upper drum 52 start rotating at the same time (see FIGS. 16 a to 16 c), but due to the biasing force of the balance spring 51, the engaging protrusion 52d has an arcuate play. It feels like pressing the groove 53e, and serves to reduce the operating force due to the weight of the glass. As it rises to a certain extent, the biasing force of the balance spring 51 becomes weaker, and the arc-shaped play groove 53e pushes the engagement protrusion 52d and rotates to move to the raised position (see Fig. 16e). ). Therefore, the upper drum can be rotated relative to the lower drum 53 by the biasing force of the balance spring, and the slack in the wire can be removed.

In addition, a cable cover is provided around the lower drum where the wire is wound up, which slides and guides the wire being wound around the side of the drum, which works together with the function of the balance spring to eliminate winding slack and prevent the wire from becoming loose during winding. The window glass can be opened and closed in response to the winding operation. Furthermore, since the axial movement of the lower drum is suppressed by the brake spring that engages with the engagement protrusion of the lower drum via the brake shoe, the rotation of the drive shaft is reliably transmitted to the lower drum. It is possible to wind up and unwind the wire. Thereby, the operability of the window regulator can be made extremely good.

(Embodiment) Hereinafter, a window regulator installed according to an embodiment of the present invention will be described with reference to the accompanying drawings.

As shown in FIGS. 1 to 4, this window regulator extends approximately vertically into a side door of an automobile, and a guide rail 1 (guiding means) is connected via an upper bracket 2 and a lower bracket 3. A support bracket 4 (glass support means) is attached to the guide rail 1 to support the window glass G. The wire W engaged with the bracket 4 and stretched on the guide rail 1 by the upper pulley slider 6 and the lower slider 7 is attached to the outer tube 1.
1, 11' to a hand-cranked drive means 5 provided inside the side door. Therefore, the window glass G is usually opened and closed by sliding the support bracket 4 along the guide rail 1 by turning the drive means 5 counterclockwise in the upward direction and by turning the drive means 5 clockwise in the downward direction. There is. In addition, as a whole, the guide rail 1, the outer tube 11,
The wire W guided by 11' and the driving means 5 are arranged in a substantially inverted L-shaped positional relationship, and the driving means 5
can be placed at desired positions on the left, right, top and bottom with respect to the guide rail 1 via wires W.

Specifically, as shown in FIG. 7, the guide rail 1 is attached to the side door of an automobile by bolts B1 and B2 via an upper bracket 2 and a lower bracket 3 so as to extend substantially vertically, while the above-mentioned driving means 5 is attached to the inner panel from the inside of the door via bolt B3,
When assembling the drive means 5, as shown in FIG.
Insert the head of 3 and fix the cover 13,
For such fixing, as shown in Figure 7b,
Slightly larger than the root diameter of the above mounting bolt B3,
Since a plurality of elastic protrusions S, which are slightly smaller than the threads of the bolt, are provided protruding in the circumferential direction of the bolt insertion hole 13a, by inserting the mounting bolt B3 into the bolt insertion hole 13a, the protrusions are engaged with the thread groove. , the cover 13 can be fixed to the case 12. The drive means D thus assembled is then attached to the inner panel via the attachment bolt B3.

Further, the lower wire slider 7 for slidingly extending and guiding the wire W on the guide rail 1 is an eighth
9, an engaging portion 71 which is an integrally molded resin product and which can be inserted into an engaging hole 75 corresponding to the lower end of the guide means 1 on the mounting surface of the wire slider main body 70. has. That is, as shown in FIG. 9a, the engagement hole 75 has a trapezoidal hole 78 on the right side of a wide hole 76 extending in the vertical direction via a constricted portion 77, and has a narrow hole 79 on the left side. On the other hand, the wire slider 7 has inelastic engagement wings that can be inserted into the wide hole 76 on the mounting surface of the main body 70 and that grips the narrow hole 79 by sliding sideways after insertion. 7
2, and with the insertion of the wing portion 72, the trapezoidal hole 78
It consists of a V-shaped elastic engagement part 73 which is located at , and comes into contact with the constriction part 77 of the engagement hole to contract and engage with the constriction part 77 of the engagement hole as the wing part 72 slides. Therefore,
After the wire slider 7 is inserted into the corresponding engagement hole 75 of the guide rail, it can be engaged and fixed with respect to the guide means by a simple operation of sliding it sideways. On the other hand, the upper wire slider 6 moves the rotating roller 60 having the wire guide groove 60a into the guide tube 61a
A guide bracket 61 having a mounting hole 60b,
It is rotatably supported on a rotating shaft 62 via a shaft 61b.

Furthermore, as shown in FIG. 11, when the window glass G is attached to the mounting portion 40 via the resin bracket 41 with bolts 42, the glass support means 4 is integrally attached to the lower edge of the resin bracket 41. A rain gutter bracket 41a is formed, and the bracket 41a is disposed so as to abut against the lower end of the window glass G, protrude beyond the thickness of the glass, and cross the glass support means 4. Therefore, even if rainwater tries to enter the window regulator through the window glass, the rainwater will be caught by the rain gutter bracket and led out to the side. Further, the outer tube 11 that guides the wire W from the slider 7 below the guide rail 1 to the upper end of the guide rail 1 is attached to a mounting portion 20 integrally formed on the door body mounting bracket 2 fixed above the guide rail 1. Against the 10th
As shown in the figure, the clip 8 is locked by the lower end locking part 8c and extends laterally through an insertion hole 8a supported by the wing part 8b, and is disposed in an inverted L shape. Therefore, not only the inverted L-shaped arrangement of the outer tube is simplified, but also the position of the driving means connected to the wire means can be freely selected. As the wire W, a composite synthetic resin fiber wire made of synthetic resin fibers knitted into a wire shape and coated with resin is used.If a thermoplastic resin pipe is used as the outer tube 11, it is lightweight with less wire elongation. The wire can be provided to improve the operability of the window regulator, and at the same time, the outer tube has a single-layer synthetic resin pipe to ensure sliding guidance of the wire, providing an inexpensive wire structure. This is preferable because it can be done.

Specifically, as the above composite synthetic resin wire,
Several wires using aromatic aramid fibers manufactured by Dupont in the United States, such as the product name "Tough Excel" manufactured by Teikoku Sangyo Co., Ltd., and polyacetal superstretched wires, such as the product name "Tenatsuku SD" manufactured by Asahi Kasei Industries, Ltd. It is preferable to use a string-like material coated with a thermoplastic resin such as a polyurethane elastomer, a polyester elastomer, a myionomer, a polyamide resin, and a fluorine resin.

As the outer tube, it is preferable to use a thermoplastic resin pipe made of polyamide, polyester, polypropylene, polyoxymethylene, polyethylene, or the like.

Next, the structure of the driving means 5 will be explained.

The driving means 5 consists of the parts shown in FIG.
It is assembled as shown in FIG.

That is, the case 50 includes a pair of wire introduction parts 50a and 50b extending outward from the storage part, a balance spring locking part 50c on the inner periphery of the storage part, and a boss part 50d bearing the drive shaft tip 56b in the center of the storage part. ,
It has a hole 50d on the outer periphery into which the bolt B3 is inserted. A right-handed balance spring 51 is housed in the bottom of the case 50, and an outer peripheral end 51a is engaged with a case locking portion 50c. Reference numeral 52 designates an upper drum, which is engaged with the inner peripheral end 51b of the balance spring in a groove 52b formed in the bearing part 52a, and has an engaging part 52c in the upper part near the outer periphery, to which one end of the wire means is engaged. An engaging protrusion 52d is formed from the center. 53 is the lower drum, as shown by the dashed line,
The bottom surface has an arcuate engagement groove 53e that engages with the engagement protrusion 52d of the upper drum. On the other hand, a wire guide groove 53c is formed in the side portion, and the upper drum 5
A wire whose one end engages with the engaging part 52c of the lower drum is wound, and a wire extending from the other end of the wire means which engages with the engaging part 53b formed on the top surface of the lower drum is wound. By rotating the lower drum 53, the wire is wound up and unwound simultaneously. In addition, the lower drum 5
3 has an engagement protrusion 53d that engages with the drive shaft 56 via the brake shoe 57,
It is rotatable by rotation of the drive shaft 56.
Reference numeral 54 denotes a cable cover for slidingly guiding the wire wound around the side surface of the drum 53, and has an arcuate guide wall 53a surrounding the lower drum 53.
In addition, 54b is a lower protrusion that fits into the case, and 54c
is an assembly hole. 56 is a drive shaft, one end of which 56
a is supported on the bearing boss portion 50d of the case via the bearing portion 53a of the lower drum and the bearing portion 52a of the upper drum. On the other hand, the other end 56b projects through a central hole 58a of the brake drum, which will be described below, and is engaged with a handle portion (not shown). Reference numeral 55 denotes a brake spring, which engages with the engaging protrusion 53d of the lower drum 53 via the brake shoe 57, and is housed in the housing portion 58b of the brake drum 58. Reference numeral 59 denotes a cover, which is arranged so that the housing portion 58b of the brake drum 58 is located in the central hole 59a, and the mounting hole 59a and the mounting hole 50 of the case 50 are connected to each other.
e and can be assembled by inserting a bolt B3 as shown in FIG.

Therefore, according to this configuration, the upper drum 52 is located at the bottom of the case 50, and the inner peripheral end 5 of the balance spring 51 whose outer peripheral end 51a is locked to the case 50.
1b, the upper drum 52 is biased in the direction to eliminate the loosening of the wire, and as a result, the upper drum 52 is moved as shown in FIG. , and the lower drum 53, the window glass is lowered and the wire is wound around the lower drum 53, while the upper drum 52
When the side wire is wound around the lower drum 53 only about half a turn, the upper drum 52 is rotated by the biasing force of the balance spring 51 to remove the slack in the wire. In addition, a cable cover 54 is provided around the lower drum 53 on which the wire is wound, which slides and guides the wire being wound on the side of the drum, which works together with the function of the balance spring 51 to eliminate winding slack. However, the window glass can be opened and closed in response to the winding operation of the wire.
Further, since the axial movement of the lower drum 53 is suppressed by the brake spring 55 that engages with the engagement protrusion 53d of the lower drum 53 via the brake shoe 57, the rotation of the drive shaft 56 is ensured. The signal is transmitted to the lower drum 53, and the wire can be wound up and unwinded.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing the overall structure of the window regulator according to the present invention, Fig. 2 is a front view showing its installed state, Fig. 3 is a left side view of Fig. 2, and Fig. 4 is a 2 is a right side view, FIG. 5 is a vertical sectional view of the driving means, FIG. 6 is an exploded assembly view of the driving means in FIG. 5, and FIGS. 7 a and b are sectional views showing the assembly and fixing mechanism of the driving means. and a plan view, Fig. 8 is an explanatory diagram of the installation state of the lower slider, and Fig. 9 a and b are the 8th
FIG. 10 is a perspective view of the clip that fixes the outer tube, FIG. 11 is a side view showing the fixed state of the window glass, and FIG.
13 is an exploded assembly view of the upper roller slider, FIG. 14 is a conceptual diagram showing the relationship between the upper drum 52 and the lower drum 53, and FIG. FIG. 15 is an exploded process diagram showing the relationship among the drive shaft 56, lower drum 53, upper drum 52, arcuate play groove 53e, engagement protrusion 52d, wire w, and glass support means 4 when the glass is lowered, and FIG. Drive shaft 56 and lower drum 5 when glass rises
3 is an exploded process diagram showing the relationship among the upper drum 52, the arcuate play groove 53e, the engaging protrusion 52d, the wire W, and the glass support means 4. DESCRIPTION OF SYMBOLS 1... Guide rail, 2... Mounting bracket, 4... Glass support means, 5... Drive means, 6
...Upper roller slider, 7...Lower slider, 8...
...Clip, 11...Outer tube, 41...
...Rain barrel bracket, 50...Case, 51...
Balance spring, 52... Upper drum, 53... Lower drum, 54... Cable cover, 55... Brake spring, 56... Drive shaft, 57... Brake shoe, 58... Brake drum, 59... Cover .

Claims (1)

[Claims for Utility Model Registration] Glass support means for supporting window glass;
A window window comprising a guide means for slidably guiding the glass support means, a wire means for connecting the glass support means and the drive means, and a driving manual for sliding the glass support means along the guide means via the wire means. In the guulator, the driving means includes a case 50, a balance spring 51 located at the bottom of the case and whose outer peripheral end is locked to the case, and whose lower part engages with the inner peripheral end of the balance spring, An upper drum 52 having an engaging portion 52c and an engaging protrusion 52d on the upper portion of which one end of the wire means is engaged, and an engaging protrusion 52d of the upper drum.
The wire means is wound on the side surface, and the other end of the wire means is engaged on the top surface of the engaging portion 53b, the drive shaft 56, and the brake. Lower drum 53 having an engagement protrusion 53d that engages via shoe 57
The lower drum 53 rotates in conjunction with a drive shaft 56, and fixes one end of the wire means to raise and lower the glass support means.The lower drum 53 rotates in conjunction with the drive shaft 56, and winds up one of its intermediate portions while fixing one end of the wire means to raise and lower the glass support means. The upper drum 52, which can be unwound and fixes the other end of the wire means, is rotated by a balance spring 51 in the upward direction of the glass support means, and the upper and lower drums 52,
53 are rotatable in the same direction by engagement between the arcuate play groove 53e and the engaging protrusion 52d, and when the lower drum 53 is rotated against the biasing force of the balance spring 51, a wire near the upper drum 52 is rotated. As the amount of winding decreases, the upper drum 52 is configured such that its engaging protrusion 52d rotates in the arcuate play groove 53e in a direction opposite to the rotational direction by the biasing force of the balance spring 51. When rotating the drum 53 in the direction of the biasing force of the balance spring 51, the biasing force of the balance spring 51 causes the upper drum 52 to rotate following the lower drum 53, and the biasing force of the balance spring rotates the upper drum 52 with respect to the lower drum 53. 52 can be rotated relative to each other according to the slackness of the wire, and a cable cover 54 is located around the lower drum 53 and slides and guides the wire wound around the side surface of the drum, and an engaging protrusion of the lower drum 53. Brake spring 55 that engages with column 53d via a brake shoe
and the drive shaft 56 together with the brake spring 55.
A brake drum 58 containing a brake shoe 57 and a cover 59 are provided.
An automobile window regulator characterized in that a drive shaft 56 is inserted through the bottom of the case.