JPH052782Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an improvement in a wire slack removal mechanism of a drive section of 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 slide 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 the drive shaft and fitted to the drive shaft so as to be non-rotatable relative to the drive shaft. A second drum is provided, around which the combined first drum and the other end of the wire means are wound, and which is fitted to the drive shaft so as to be relatively rotatable, the outer circumference of the drive shaft or the inner circumference of the second drum being By providing a recess in which the radial width gradually increases toward one side in the circumferential direction and arranging the rolling means in the recess, the slack of the wire means of the drive shaft relative to the second drum is removed. We have proposed a window regulator that is characterized by allowing only the relative rotation of the
107082 and Utility Model Application Publication No. 107083).

(Object of the invention) An object of the present invention is to provide a novel wire loosening mechanism for the drive 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 the guide means, the drive means rotates in conjunction with a drive shaft 56,
fixing one end of the wire means and winding one of its intermediate portions for raising and lowering the glass support means;
A winding drum 53 capable of unwinding the other wire means
and a biasing drum 52 which fixes the other end of the wire means and is biased to rotate in the upward direction of the glass support means by a balance spring 51, and a biasing drum 52 formed on the bottom surface of the winding drum 53 in the circumferential direction. The engagement between the extending arcuate play groove 53e and the engagement protrusion 52d on the upper surface of the biasing drum 52 enables both to rotate in the same direction, causing the biasing drum 53 to rotate against the biasing force of the balance spring 51. In this case, as the amount of wire winding near the biasing drum 52 decreases, the biasing drum 52 is moved in the direction opposite to the rotating direction by the engaging protrusion 52d of the biasing drum 52 within the arcuate play groove 53e due to the biasing force of the balance spring 51. On the other hand, when the biasing drum 53 is rotated in the direction of the biasing force of the balance spring 51, the biasing drum 52 is rotated following the winding drum 53 by the biasing force of the balance spring 51, The present invention is characterized in that the urging force of the balance spring allows the urging drum 52 to rotate relative to the winding drum 53 in accordance with the loosening of the wire.

(Operations and Effects of the Invention) According to the present 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 winding drum 53 that can be unwound and the other end of the wire means are fixed, and the balance spring 5
1, the winding drum 5
As shown in FIG. 15, if the circular arc-shaped idle groove 53e extending in the circumferential direction formed on the bottom surface of the drum 3 is engaged with the engagement protrusion 52d on the top surface of the biasing drum 52, both can rotate in the same direction. When the glass support means is in the raised position and you try to lower it, the amount of winding wire on the winding drum is usually the same on the winding side and the unwinding side, so the winding force of the wire is enough to prevent the winding. The drum 53 and the biasing drum 52 rotate integrally (see FIGS. 15a to 15c). At this time, the balance spring 51 rotates in a direction that winds up the inner peripheral end, so the winding 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 biasing drum 52 decreases (FIG. 15d), the biasing drum 52 begins to rotate in the opposite direction to the above rotational direction due to the biasing force of the balance spring 51. When the engagement 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 comes into contact with the engagement protrusion 52d. The biasing drum 52 will be rotated.

On the other hand, in the lowered position, since the number of wire turns on the biasing drum side is small, when the winding drum 53 is rotated in a direction that raises the glass support means, the winding drum 53 rotates in the same direction as the biasing direction of the balance spring 51. 53 and the biasing drum 52 start rotating at the same time (see FIGS. 16a to 16c), but due to the biasing force of the balance spring 51, the engaging protrusion 52d moves into the arcuate play groove 53.
It feels like pressing e, 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 arcuate play groove 53e now moves toward the engagement protrusion 52d.
Press and rotate to move to the raised position (see Figure 16e).

Therefore, the biasing force of the balance spring allows the biasing drum to be rotated relative to the winding drum 53 to remove slack in the wire, thereby making the window regulator extremely easy to operate. be able to.

(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. On the other hand, clip 8 shown in FIG.
The inverted L
Arranged in a letter 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 is also a single-layer synthetic resin pipe to ensure sliding guidance of the wire and provide an inexpensive wire structure. This is preferable because it can be done.

Specifically, as the above composite synthetic resin wire,
Wires made from aromatic aramid fibers manufactured by DuPont in the United States, such as the product name ``Tough Excel'' made by Teikoku Sangyo Co., Ltd., and polyacetal ultra-stretched wires such as the product name ``Tenatsuku SD'' made 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 myonomer, a polyamide resin, a fluorine resin, or the like.

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 denotes a biasing drum, which engages 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 on the upper part of which is engaged with one end of the wire means on the outer periphery. An engaging protrusion 52d is formed near the center. Reference numeral 53 denotes a winding drum, which has an arcuate play groove 53e on its bottom surface, which engages with the engaging protrusion 52d of the biasing drum, as shown by the dashed line. On the other hand, a wire guide groove 53c is formed in the side part, and a wire whose one end engages with the engaging part 52c of the biasing drum 52 is wound therein, and a wire guide groove 53c is formed on the top surface of the winding drum. A wire extending from the other end of the wire means that engages with the mating portion 53b is wound, and as the winding drum 53 rotates, the wire is simultaneously wound up and unwound. Also,
A drive shaft 56 is located at the center of the top surface of the winding drum 53.
It has an engagement protrusion 53d that engages with the brake shoe 57 via the brake shoe 57, and is rotatable by rotation of the drive shaft 56. Reference numeral 54 denotes a cable cover that slides and guides the wire wound on the side surface of the drum 53, and includes an arcuate guide wall 5 surrounding the winding drum 53.
It has 3a. Note that 54b is a protrusion that engages with the case recess, and 54c is an assembly hole. 56 is a drive shaft, one end 56a of which is connected to the bearing portion 5 of the winding drum.
3a is carried by the bearing boss portion 50d of the case via the bearing portion 52a of the urging drum. On the other hand, the other end 56
b is made to protrude through a central hole 58a of the brake drum, which will be described below, and is engaged with a handle portion (not shown). 55 is a brake spring, and the above-mentioned winding drum 53
The brake drum 58 is engaged with the engagement protrusion 53d via the brake shoe 57, and is stored in the storage portion 58b of the brake drum 58. Reference numeral 59 denotes a cover, and a housing portion 5 for the brake drum 58 is placed in the center hole 59a of the cover.
8b, and the mounting hole 59a and the mounting hole 50e of the case 50 can be assembled by inserting a bolt B3 as shown in FIG.

Therefore, according to this configuration, the biasing drum 52
is located at the bottom of the case 50, and the outer circumferential end 51a engages with the inner circumferential end 51b of the balance spring 51, which is secured to the case 50. As a result, the wire is biased in the direction of eliminating the loosening of the wire. As shown in FIG. 12, the winding drum 52 cooperates with the winding drum 53 via the arcuate play groove 53e that engages with the engagement protrusion 52d. When the wire on the biasing drum 52 side is wound around the winding drum 53 only about half a turn, the biasing force of the balance spring 51 rotates the biasing drum 52 to remove the slack in the wire. remove. In addition, a cable cover 54 is provided around the winding drum 53 on which the wire is wound, and the cable cover 54 slidingly guides the wire being wound on the side surface of the drum. The window glass can be opened and closed in response to the winding operation of the wire. Furthermore, the winding drum 53 is
Since the axial movement of the drive shaft 56 is suppressed, the rotation of the drive shaft 56 is reliably transmitted to the winding drum 53, and the wire can be wound and unwound.

[Brief explanation of the drawing]

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. Fig. 8 is an explanatory diagram of the lower slider installed, Fig. 9 a and b are plan views showing the parts shown in Fig. 8, Fig. 10 is a perspective view of the clip fixing the outer tube, Figure 11 is a side view showing the fixed state of the window glass;
Figure 2 is a back view showing the engaged state of the biasing drum and the winding drum, Figure 13 is an exploded assembly view of the upper roller slider, and Figure 14 shows the relationship between the biasing drum 52 and the winding drum 53. The conceptual diagram shown in FIG. 15 is a process showing the relationship between the drive shaft 56, the winding drum 53, the biasing drum 52, the arcuate play groove 53e, the engaging protrusion 52d, the wire w, and the glass support means 4 when the glass is lowered. Exploded view, Figure 16 shows the drive shaft 5 when the glass is raised.
6 is an exploded process diagram showing the relationship among the winding drum 53, the biasing drum 52, the arc-shaped 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, 6... Upper roller slider, 7... Lower slider, 8... Clip, 5...
...Driving means, 11...Outer tube, 41...
...Rain gutter bracket, 50...Case, 51...
Balance spring, 52... Biasing drum, 53... Winding 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 drive means for sliding the glass support means along the guide means via the wire means. In the guulator, the drive means rotates in conjunction with the drive shaft 56,
One end of the wire means is fixed to raise and lower the glass support means. One of the intermediate portions of the wire means is wound up, while the other end of the wire means is fixed to a winding drum 53 capable of unwinding the other wire means, and the other end of the wire means is fixed and balanced. A biasing drum 52 rotatably biased in the upward direction of the glass support means by a spring 51 is overlapped with an arcuate idle groove 53e extending in the circumferential direction formed on the bottom surface of the winding drum 53 and the biasing drum 52 By engaging the engagement protrusions 52d on the upper surface, both can rotate in the same direction, and when the winding drum 53 is rotated against the biasing force of the balance spring 51, the amount of wire winding close to the biasing drum 52 is As the winding drum 52 decreases, the engaging protrusion 52d of the biasing drum 52 is configured to rotate in the arcuate play groove 53e in a direction opposite to the rotating direction due to the biasing force of the balance spring 51. 53 in the direction of the biasing force of the balance spring 51, the biasing force of the balance spring 51 causes the biasing drum 52 to rotate following the winding drum 53, and the biasing force of the balance spring rotates the biasing drum 52 against the winding drum 53. A wire loosening mechanism for an automobile window regulator, characterized in that a biasing drum 52 is relatively rotated according to the loosening of the wire.