JP3935820B2 - Guide pulley and window regulator provided with the guide pulley - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a guide pulley and a window regulator including the guide pulley. More specifically, for example, the present invention relates to a guide pulley used in a window regulator fixed in a door panel of an automobile, and a window regulator including the guide pulley.
[0002]
[Prior art]
The window regulator is provided at a carrier plate for supporting the window glass, a guide rail for guiding the raising and lowering of the carrier plate, an inner cable routed vertically from the carrier plate, and an end of the guide rail. Guide pulleys and rotational drive means for operating the inner cable (see Patent Document 1).
[0003]
The guide pulley is rotatably attached to the guide rail so as to guide the movement of the inner cable when the direction is changed and to reduce a resistance loss portion during transmission of the inner cable. The guide pulley is attached by first positioning the pulley shaft hole in the pulley shaft insertion hole formed in the guide rail, and then placing the pulley on the guide rail. Next, the pulley shaft is inserted into the pulley shaft insertion hole and the shaft hole, and the tip end portion of the pulley shaft projects from the back surface of the guide rail. Next, the tip of the pulley shaft is caulked to the guide rail.
[0004]
[Patent Document 1]
Japanese Patent No. 3119762 [0005]
[Problems to be solved by the invention]
However, since it is necessary to use a riveting device for the caulking process, there is a problem that the equipment cost is increased. In addition, this guide pulley caulking structure requires a caulking step, and if the size of the caulking portion of the pulley shaft is small, the support strength of the pulley is reduced. There is a problem that decreases.
[0006]
In view of the above circumstances, the present invention provides a guide pulley and a window regulator provided with the guide pulley that can secure the support strength of the pulley and can reduce the cost of installation work and improve the work efficiency. With the goal.
[0007]
[Means for Solving the Problems]
The guide pulley of the present invention is formed on both sides of the slit body and a guide body having a slit portion for mounting on a flat end portion of the attached member and an introduction portion for inserting a routed inner cable. Among the partition walls, a pulley is disposed along one partition wall, an insertion hole formed in each of the partition walls, and a pulley shaft inserted into the hole of the pulley. A neck portion for fitting into a U-shaped slit formed at a flat end portion of the mounting member is formed.
[0008]
A window regulator provided with a guide pulley of the present invention includes a carrier plate that supports a window glass, a guide rail for guiding the raising and lowering of the carrier plate, an inner cable routed vertically from the carrier plate, A window regulator comprising a guide pulley provided at an end portion of the guide rail and a rotation driving means for operating the inner cable, wherein the guide pulley is a slit for mounting on the end portion of the guide rail. And a guide body having an introduction part for inserting the inner cable, a pulley disposed along one partition among partition walls formed on both sides of the slit part, and an insertion formed on both partition walls A pulley shaft inserted into the hole of the pulley and the pulley, The outer periphery of the shaft, characterized in that formed by the neck portion for fitting in the U-shaped slit formed at the end of the guide rail formation.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a guide pulley of the present invention and a window regulator including the guide pulley will be described with reference to the accompanying drawings.
[0010]
As shown in FIGS. 1 to 5, a window regulator according to an embodiment of the present invention includes a carrier plate (not shown) that supports a window glass, and a guide rail 1 for guiding the raising and lowering of the carrier plate. And an inner cable 2 routed vertically from the carrier plate, a guide pulley 3 provided at an end of the guide rail 1, and a rotation drive means (not shown) for operating the inner cable 2. It is configured. The guide rail 1 is fixed to a door panel. Further, as the rotation driving means, a wire drum that can automatically circulate the inner cable 2 and an actuator made of an electric motor, or a winding drum that circulates the inner cable 2 with an operation handle can be used. . A guide slit 4 and a flange 5 are formed at the end of the guide rail 1 to prevent the guide pulley 3 from being inserted and rotated after being mounted. Moreover, the U-shaped slit 6 for fitting the neck part 21 of the pulley shaft 10 mentioned later is formed in this edge part. In addition, in order to stop the rotation of the pulley shaft 10, the shapes of the slit 6 and the neck portion 21 may be square or oval. Further, in the present embodiment, in order to absorb the manufacturing error of the guide rail 1 and the guide pulley 3, that is, the dimensional error and secure the positioning of the slit 6 and the neck portion 21, the guide portion is provided at the opening of the slit 6. 7 is formed, but the guide portion 7 may not be provided.
[0011]
The guide pulley 3 includes a guide body 8 mounted in a parallel direction with respect to the guide rail 1, a pulley 9 having a U-shaped groove on the outer periphery, and a pulley shaft 10 that rotatably supports the pulley 9. It is configured.
[0012]
The guide body 8 has a slit portion 11 for mounting on the end portion of the guide rail 1 and an introduction portion 12 for inserting the outer casing 2a, and partition walls 13 and 14 are formed on both sides by the slit portion 11. . Further, the partition walls 13 and 14 are formed with insertion holes 13a and 14a for inserting the pulley shaft 10, respectively. The pulley 9 is disposed along the partition wall 13 among the partition walls 13 and 14. The other partition wall 14 is formed with a guide portion 15 inserted into the guide slit 4 and a guide groove 16 into which the flange 5 is inserted.
[0013]
The pulley shaft 10 is formed by machining an annular groove 20 between a head 17 for retaining, a large-diameter rotation support 18, a small-diameter rotation support 19, and both rotation supports 18, 19. It is comprised from the neck part 21 for retaining. A force for pulling the pulley 9 out by the tension of the inner cable 2 can be received by the pulley shaft 10. Further, the force that the guide body 8 tends to come off due to the reaction force of the outer casing 2a is received at the portion where the pulley shaft 10 and the insertion hole 14a of the guide body 8 are fitted.
[0014]
In this embodiment, in order to securely fix the guide pulley 3 to the guide rail 1, a protrusion cut and raised at a predetermined distance from the end surface of the guide rail 1 (a portion near the maximum pushing portion of the guide pulley 3). A coupling structure is used in which a rectangular engagement portion 32 that is elastically fitted to 31 is formed in the guide body 8.
[0015]
In this embodiment, as shown in FIGS. 4 to 5, first, after the pulley 9 is arranged on the side of the guide pulley 8, the pulley shaft 10 is inserted into the insertion holes 13 a and 14 a of the partition walls 13 and 14 and the pulley 9. The guide pulley 3 is assembled by inserting it into the hole 9a. Then, as shown in FIG. 6A, the guide pulley 3 is pushed horizontally along the guide slit 15 and the flange 5 of the guide rail 1 with the guide portion 15 and the guide groove 16 (see FIG. 5). . Further, as shown in FIG. 6B, the tip of the engaging portion 32 is brought into contact with the protrusion 31 and then deformed, and the engaging portion 32 is fitted into the protrusion 31 as shown in FIG. At the same time, the neck portion 21 of the pulley shaft 10 is fitted into the slit 6 of the guide rail 1. Thereby, the assembly of the guide pulley 3 and the guide rail 1 is completed, and the slit 6 of the guide rail 1 is formed by the large-diameter rotation support portion 18 and the small-diameter rotation support portion 19 as shown in FIG. As a result, the pulley shaft 10 is prevented from coming off.
[0016]
In this embodiment, since the pulley and the pulley shaft can be set on the pulley body and attached to the guide rail at the same time, if the guide pulley comprising the three parts of the pulley body, the pulley and the pulley shaft is assembled in the previous process, Since the assembly to the guide rail is completed in one process, the assembly process can be simplified.
[0017]
Further, since the support strength of the pulley is determined by the shape and dimension of the pulley shaft, it is possible to omit caulking process management and subsequent guarantees as in the prior art.
[0018]
Further, when it is necessary to disassemble the guide pulley 3 from the guide rail 1 at the time of maintenance, after releasing the tension of the inner cable 2, the engagement portion 32 is elastically deformed to release the engagement with the protrusion 31, Next, the guide pulley 3 can be easily disassembled by pulling it horizontally with respect to the guide rail 1.
[0019]
In addition, the guide pulley in this invention is not limited to using for a window regulator, If it is a to-be-attached member which has a flat edge part, it can apply suitably.
[0020]
【The invention's effect】
As described above, according to the present invention, the support strength of the pulley can be easily ensured by the shape and dimension of the pulley shaft. In addition, the pulley shaft is formed with a neck that prevents it from coming off the guide rail, so that it can be assembled simply by fitting it into the slit of the guide pulley, thereby reducing the cost of installation and improving the work efficiency. it can.
[Brief description of the drawings]
FIG. 1 is a plan view showing a guide pulley for a window regulator according to an embodiment of the present invention.
FIG. 2 is a rear view showing the guide pulley of FIG. 2;
3 is a cross-sectional view taken along the line II of FIG.
FIG. 4 is an exploded view of the guide pulley of FIG.
FIG. 5 is a side view of the guide pulley of FIG. 1;
FIG. 6 is a diagram illustrating a procedure for attaching a guide pulley.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Guide rail 2 Inner cable 2a Outer casing 3 Guide pulley 4 Guide slit 5 Flange 6 U-shaped slit 7, 15 Guide part 8 Guide main body 9 Pulley 9a Hole 10 Pulley shaft 11 Slit part 12 Introduction part 13, 14 Partition 13a, 14a Insertion hole 16 Guide groove 17 Head 18 Large-diameter rotation support portion 19 Small-diameter rotation support portion 20 Annular groove 21 Neck portion 31 Projection 32 Engagement portion

Claims (4)

Of the partition walls formed on both sides of the slit body, a guide body having a slit section for mounting on the flat end of the mounted member and an introduction section for inserting the routed inner cable, one partition wall A pulley disposed along the partition wall, an insertion hole formed in both the partition walls, and a pulley shaft inserted into the hole of the pulley, and a flat end portion of the mounted member on the outer periphery of the pulley shaft A guide pulley formed with a neck portion for fitting into a U-shaped slit formed in the above. The guide pulley according to claim 1, wherein the guide body is formed with an engaging portion that is elastically fitted to a protrusion cut and raised on the attached member. A carrier plate for supporting the window glass, a guide rail for guiding the raising and lowering of the carrier plate, an inner cable routed vertically from the carrier plate, and a guide pulley provided at an end of the guide rail; A window regulator comprising rotational drive means for operating the inner cable, wherein the guide pulley includes a slit portion for mounting on an end portion of the guide rail and an introduction portion for inserting the inner cable. A guide body having a pulley, a pulley disposed along one of the partition walls formed on both sides of the slit portion, an insertion hole formed in both the partition walls, and a pulley shaft inserted into the hole of the pulley And formed on the outer periphery of the pulley shaft at the end of the guide rail. U-shaped window regulator which neck portion for fitting in the slit is formed. The window regulator according to claim 3, wherein the guide body is formed with an engaging portion that is elastically fitted to a protrusion cut and raised on the guide rail.

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