JP2005016224A - Wire drive device of window regulator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To miniaturize the size of a wire drive device in a wire drive type window regulator controlling lifting and lowering of a window panel provided on a door of an automobile. <P>SOLUTION: The wire drive device is provided with a drive shaft 10 rotated by rotation operation of a regulator handle 15, a gear 17 rotated by rotation of the drive shaft 10, and a drum 21 winding a wire 22 on the outer peripheral face. The wire drive device engages external tooth 28 of the gear 17 with internal tooth 27 formed on the drum 21, rotates the drum 21 by rotation of the gear 17, and winds the wire 22 around the drum 21 to be drawn out. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention provides a drive shaft that is rotationally driven, a gear that is concentrically disposed on the drive shaft, and that is rotationally driven by the rotation of the drive shaft, and a wire that is wound around an outer peripheral portion and rotates to rotate the wire. The present invention relates to a wire drive device for a window regulator having a drum that winds and delivers.
[0002]
[Prior art]
A wire drive type window regulator for opening and closing a wind panel provided in an automobile or a building has been conventionally known, and a wire drive device of the above type used for this regulator has also been conventionally known (for example, Patent Documents). 1). In the conventional wire drive device, a concentric gear is fixed to the above-mentioned drum, and this gear meshes with the above-mentioned gear arranged concentrically on the drive shaft. The rotation of the drive shaft is transmitted to the drum via these two gears, and the drum is rotated. As described above, the conventional wire driving device is configured so that the rotation of the drive shaft is decelerated by two gears and transmitted to the drum, and the drum can be rotated with a small force. However, in the conventional wire driving device, since the two gears are arranged in parallel as described above, these gears occupy a large area, the entire wire driving device is enlarged, and the wire driving device is installed. The disadvantage of increasing the area was inevitable.
[0003]
Further, in the conventional wire driving device, since the gear is provided concentrically with the drum, the drum and the gear occupy a large space in the axial direction, and the thickness of the wire driving device is eventually reduced. It will be big.
[0004]
As described above, the conventional wire driving device has a drawback that the size of the conventional wire driving device becomes large and it is difficult to install the wire driving device in a narrow place.
[0005]
[Patent Document 1]
JP-A-6-137025 (page 3-5, FIGS. 1-6)
[0006]
[Problems to be solved by the invention]
An object of the present invention is to provide a wire drive device for a wind regulator of the type described at the beginning, which eliminates the above-mentioned conventional drawbacks and can be reduced in size.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, according to the present invention, in a wire drive device for a wind regulator of the type described at the beginning, an inner tooth is formed on the drum, and an outer tooth of the gear meshes with the inner tooth. A wire drive device for a window regulator is proposed in which the drum is rotationally driven by the rotation of (1).
[0008]
Further, in the wire drive device for a wind regulator according to claim 1, it is advantageous that the center axis of the drum is eccentric with respect to the center axis of the drive shaft (claim 2).
[0009]
Further, in the wire drive device for a wind regulator according to claim 1 or 2, it is advantageous that a center hole is formed in the drum, and the drive shaft extends in the center hole (claim 3).
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below in detail with reference to the drawings.
[0011]
FIG. 1 is a schematic front view showing an entire wire-driven window regulator 1 provided on a door of an automobile, and FIG. 2 is a cross-sectional view of the wire drive device 2.
[0012]
In FIG. 2, reference numeral 3 denotes an outer panel of the door. An inner panel 4 is integrally assembled with the outer panel 3, and a wind panel 5 made of transparent glass or transparent resin is provided between these panels 3 and 4. Has been placed. 2 indicates the outside of the vehicle, and IS indicates the inside of the vehicle. A trim 6 is attached to the inner surface of the inner panel 4. In FIG. 1, illustration of the outer panel 3 and the inner panel 4 to which the trim 6 is attached is omitted.
[0013]
The wire drive device 2 shown in FIG. 2 has a case 7 disposed between the inner panel 4 and the window panel 5, and this case 7 includes a cover plate 9 fixed to the vehicle outer surface of the inner panel 4, and its cover plate 9. The case body 8 is fixed to the cover plate 9. Further, the wire drive device 2 has a drive shaft 10, and an end 11 on the vehicle exterior side of the drive shaft 10 is rotatably supported by a support hole 12 formed in the case body 8. Further, the drive shaft 10 extends through the hole 13 formed in the cover plate 9 of the case 7, the hole formed in the inner panel 4 of the door, and the trim 6 to the inside of the vehicle, and the hole 13 of the cover plate 9. Is supported rotatably. The base portion of the regulator handle 15 is attached to the end portion 14 on the vehicle inner side of the drive shaft 10 so as not to be relatively rotatable. By grasping the knob 16 of the regulator handle 15 and rotating the handle 15, the drive shaft 10 can be driven to rotate around its central axis X.
[0014]
A gear 17 is disposed concentrically with the drive shaft 10, and this gear 17 is disposed inside the case 7, and is driven to rotate around the above-mentioned central axis X by the rotation of the drive shaft 10. Is done. As shown in FIG. 3, a pair of protrusions 19 integrally protruding on the gear 17 and a pair of protrusions 18 similarly protruding integrally on the drive shaft 10 are shown in FIG. 2. A brake spring (not shown in FIG. 3) 20 is arranged. These configurations are the same as those of conventionally known wire driving devices.
[0015]
Further, a drum 21 is rotatably disposed around the central axis Y inside the case 7, and a wire 22 is wound around the outer periphery of the drum 21. Although one wire can be wound around the outer periphery of the drum 21, here, as shown in FIG. 1, two wires 22A and 22B are used, and one end of each of the wires 22A and 22B is connected to the drum 21. It is latched by the outer peripheral part. The wires 22A and 22B are out of the case 7 through outlets 23 and 24 provided in the case 7, respectively. As the drum 21 rotates around its central axis Y, one wire 22A or 22B is wound around the outer periphery of the drum 21 and the other wire 22B or 22A is fed out of the drum 21. As the drum 21 rotates, the wire can be wound and fed out. This is the same when a single wire is used. Further, the drum 21 is centered so as to always rotate around a fixed central axis Y by rubbing against the inner surface of the peripheral wall of the case body 8.
[0016]
As shown in FIGS. 3 and 4, the drum 21 is formed in an annular shape having a center hole 25, and the drive shaft 10 extends through the center hole 25. The center axis X of the drive shaft 10 and the gear 17 and the center axis Y of the drum 21 are parallel to each other, but are located at an interval δ, and the center axis Y of the drum 21 is located between the drive shaft 10 and the gear 17. It is eccentric with respect to the central axis X.
[0017]
Further, the drum 21 is formed with a circular concave groove 26 concentric with the central hole 25, and the gear 17 described above is disposed therein. Further, an inner tooth 27 is formed on the inner peripheral surface of the circular concave groove 26 over the entire circumference, and the outer tooth 28 of the gear 17 is meshed with the inner tooth 27. As a result, when the gear 17 rotates about the central axis X, the rotation is transmitted to the drum 21, and the drum 21 is driven to rotate about the central axis Y.
[0018]
The configuration of the wire driving device 2 is as described above.
[0019]
On the other hand, as shown in FIG. 1, the carrier plate 29 is fixed to the lower part of the window panel 5, and the guide rail 30 shown in FIG. 1 is fixed to the inner panel 4 (FIG. 2) of the door. The guide rail 30 extends in the vertical direction, and the carrier plate 29 is assembled to the guide rail 30 so as to be slidable in the vertical direction along the guide rail 30.
[0020]
Further, the wire 22A that goes out of the case 7 from the outlet 23 provided in the case 7 passes through the outer tube (not shown) and is guided by a pulley 31 that is rotatably supported on the upper portion of the guide rail 30. Further, along the guide rail 30, the inside thereof extends downward, and the other end 22 </ b> C of the wire 22 </ b> A is locked to the carrier plate 29. On the other hand, the wire 22 </ b> B coming out of the case 7 from the outlet 24 provided in the case 7 also passes through the outer tube (not shown) and is guided by a pulley 32 that is rotatably supported at the lower portion of the guide rail 30. Further, along the guide rail 30, the inside extends upward, and the other end 22 </ b> D of the wire 22 </ b> B is locked to the carrier plate 29.
[0021]
When the passenger in the vehicle rotates the regulator handle 15 in the clockwise direction in FIG. 1, the rotation is transmitted to the drum 21 via the drive shaft 10 and the gear 17 and the drum 21 rotates in the clockwise direction in FIG. As a result, the wire 22 </ b> A is drawn out from the one outlet 23, and the wire 22 </ b> B is drawn into the case 7 from the other outlet 24. As a result, the portions of the wires 22A and 22B in the guide rail 30 are lowered, and the carrier plate 29 fixedly connected to the wires 22A and 22B is lowered together with the window panel 5. When the regulator handle 15 is turned counterclockwise in FIG. 1, an operation opposite to that described above is performed, and the window panel 5 is raised. In this way, the window can be opened and closed by freely raising and lowering the window panel 5. During this operation, the rotation of the gear 17 is transmitted to the drum 21 and decelerated, so that the regulator handle 15 can be rotated with a small force, and the operating force can be reduced.
[0022]
Further, as is well known per se, when a force is applied to the window panel 5 to push it down from the outside of the vehicle, the brake spring 20 shown in FIG. Since it strongly contacts the inner surface of the surrounding case 7, the braking force does not act and the window panel 5 is not lowered downward.
[0023]
According to the wire drive device 2 described above, the inner teeth 27 are formed on the drum 21, and the outer teeth 28 of the gear 17 are engaged with the inner teeth 27, whereby the gear 17 can be accommodated in the drum 21. For this reason, when the wire drive device 2 is viewed from the front as shown in FIG. 1, the area of the drive device 2 is reduced, and the installation area of the wire drive device 2 can be made smaller than the conventional one. Moreover, in order to rotationally drive the drum, a gear concentric with the drum is provided, and the inner gear 27 is formed on the drum 21 instead of meshing the gear with the gear concentric with the drive shaft. Since the outer teeth 28 of the gear 17 concentric with the drive shaft 10 are engaged with the inner teeth 27, the overall thickness of the wire drive device 2 can be reduced. In this way, the overall size of the wire driving device 2 can be reduced. In addition, since an independent gear concentric with the drum can be omitted, the number of parts of the wire driving device 2 can be reduced, and the structure can be simplified.
[0024]
The present invention can also be widely applied to wire drive devices for window regulators for various opening / closing bodies other than automobile wind panels.
[0025]
【The invention's effect】
According to the present invention, the wire drive device of the window regulator can be reduced in size.
[Brief description of the drawings]
FIG. 1 is a schematic front view of a window regulator as viewed from the inside of a vehicle.
2 is an enlarged sectional view taken along line II-II in FIG.
FIG. 3 is a diagram showing an arrangement state of a drive shaft, a gear, and a drum, and is a diagram partially showing a cross section.
FIG. 4 is a perspective view showing an assembled state of a drive shaft and a drum, and is a view partially showing a cross section.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Window regulator 2 Wire drive device 10 Drive shaft 17 Gear 21 Drum 22, 22A, 22B Wire 27 Internal tooth 28 External tooth

Claims (3)

A drive shaft that is rotationally driven, a gear that is concentrically arranged on the drive shaft, and that is rotationally driven by the rotation of the drive shaft, and a wire is wound around the outer periphery, and the wire is wound and fed out by rotating. In a wire regulator wire drive device having a drum,
An inner tooth is formed on the drum, the outer tooth of the gear meshes with the inner tooth, and the drum is driven to rotate by the rotation of the gear. The wire drive device for a wind regulator according to claim 1, wherein a center axis of the drum is eccentric with respect to a center axis of the drive shaft. The wire drive device for a wind regulator according to claim 1 or 2, wherein a center hole is formed in the drum, and the drive shaft extends through the center hole.

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