JPH0620872Y2 - Window regulator device - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of use] The present invention relates to a window regulator device for raising and lowering a window glass by engaging a cable arranged in a window glass storage portion with the window glass.

"Prior art" In recent years, cables are installed in window glass storage parts such as doors,
There is a cable-type window regulator device that raises and lowers a window glass by locking this cable.

In such a cable type window regulator device, a tension adjusting mechanism is generally provided in order to prevent a wire or the like used as a cable from being stretched during use and rattling the window glass or making it difficult to move up and down. Target.

As a tension adjusting mechanism of a conventional window regulator device, for example, there is one shown in FIG.

That is, the main drum 2 around which one end of the cable is wound and the driven drum 3 around which the other end is wound are superposed and pivoted on the housing 1a of the drive unit 1. The main drum 2 and the driven drum 3 have tooth portions 2a, 3a formed on the end surfaces thereof which overlap with each other, and the tooth portion 3a of the driven drum 3 is relatively rotatable only in the cable winding direction. Part 2
The tension adjusting mechanism is constituted by meshing with a and urging the driven drum 3 in the cable winding direction by the flat spiral spring 4 for absorbing the slack.

In this conventional example, in order to facilitate the mounting of the spiral spring 4 inside the housing 1a and to pivotally support the main drum 2 and the driven drum 3, the inner circumference of the spiral spring 4 is wound and the spiral spring 4 is formed. A boss 5 that locks the inner end of the housing 1a and is non-rotatably fitted to the housing 1a, and a pivot 6 that rotatably supports the main drum 2 and the driven drum 3 are rotatably combined with each other. I am doing it.

To assemble the drive unit 1, the boss 5 is fixed to the face plate of the housing 1a in a non-rotatable manner, the spiral spring 4 is housed in the driven drum 3, and the outer end of the spiral spring 4 is locked to the driven drum 3. The inner periphery of the spring 4 is fitted to the boss 5 to lock the inner end, and then the pivot 6 is inserted into the boss 5, and the main drum 2 and the driven drum 3 are overlapped with each other to insert the pivot 6.

[Means for Solving the Problems] However, in such a conventional tension adjusting mechanism, the boss 5 for locking the spiral spring 4 and the pivot 6 for pivotally supporting the main drum 2 and the driven drum 3 are provided separately. As a result, the number of parts increases, manufacturing and management costs increase, and
There was a problem that it was not always easy to assemble.

The present invention has been made in view of such conventional problems, and an object thereof is to provide a cable-type window regulator device having a small number of parts, a simple structure, and easy to assemble.

[Means for Solving Problems] The gist of the present invention for achieving such an object is a window regulator device that raises and lowers a window glass by locking it to a cable arranged in the window glass storage section. And a main drum around which the cable is wound and a driven drum are overlapped with each other to pivotally support the driven drum in the housing of the housing so that the driven drum is located at the back to form a drive portion of the cable, and the end surface where the main drum and the driven drum overlap each other. Each of the teeth is engraved on the other side, and the teeth are meshed with each other so that the driven drum is relatively rotatable only in the cable winding direction, and the flat drum spiral spring for absorbing slack energizes the driven drum in the cable winding direction. In the tension adjusting mechanism, the main drum and the driven drum are rotatably supported by the housing and the inner end of the spiral spring is engaged. A shaft member that is fixed to the bottom plate of the housing portion of the housing, and the shaft member includes a pivot shaft portion to which the main drum and the driven drum are rotatably fitted, and a boss portion that winds around the inner circumference of the spiral spring. And an integral guide groove formed on the pivot shaft portion so as to guide the inner end of the spiral spring, the end portion being cut deeper than the outer diameter and extending in the axial direction to become shallower to the outer diameter. In the boss portion, a locking groove is formed at a position continuous with the guide groove of the pivot portion and is cut inward from the outer diameter of the pivot portion to lock the inner end of the spiral spring. The window regulator device is characterized in that a deformed projection that is non-rotatably fitted is provided on the bottom plate of the housing of the housing.

"Operation" When assembling the drive part of the window regulator device, the shaft member is fixed by fitting the deformed projection projecting on the boss part to the bottom plate of the housing part of the housing,
With the spiral spring housed in the driven drum, insert the pivot shaft into the inner periphery of the spiral spring while engaging the inner end of the spiral spring with the guide groove of the pivot shaft, and then insert the main drum into the pivot shaft to cover the cover plate. Assembly will be completed if assembled.

Insert the pivot shaft part of the shaft member between the main drum and the driven drum, and then slightly push in the main drum and the driven drum, so that the inner end of the spiral spring is pushed by the drum and pushed into the locking groove of the boss portion and locked. To be done.

In the tension adjustment mechanism, the driven drum is regulated so that its teeth do not rotate in the loosening direction of the wound cable by engaging with the teeth of the main drum, and when the cable sags, the urging force of the spiral spring is generated. Thus, it rotates relative to the main drum and absorbs the slack by winding the cable.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

1 to 6 show an embodiment of the present invention.

As shown in FIGS. 1 and 2, the regulator device 1
Reference numeral 0 denotes a guide rail 30 which is attached to the inside of a window glass storage portion of a door of an automobile (not shown) and which guides the cable 20 arranged in the vertical direction of the window glass.
The cable 20 extends from the upper portion of the guide rail 30 to the drive unit 40.

A first guide pulley 31 is rotatably supported at the upper end of the guide rail 30 and a guide member 32 having a guide rib 32a is fixedly installed, and a second guide pulley 33 is provided at the lower end of the guide rail 30. Is also pivotably supported.

The cable 20, which is a steel wire wire or a resin wire, is wound around the first guide pulley 31 and the guide ribs 32a of the guide member 32 and the second guide pulley 33, and is passed above and below the guide rail 30. A carrier plate 35 connected to a window glass is fixed to the cable 20 along the guide rail 30.

As shown in FIGS. 1 and 3, the drive unit 40 includes a housing 41 composed of a base plate 42 and a cable 43, and a main drum 60 and a driven drum 40 which are housed in a storage unit 44 of the case 43. A flat spiral spring 80 for absorbing the slack of the cable 20 which is pivotally supported by the member 50 and biases the driven drum 70 is provided, and the electric motor 45 as a drive source is provided.

As can be seen from FIGS. 3 to 6, the shaft member 50 integrally includes a pivot shaft portion 51 to which the main drum 60 and the driven drum 70 are rotatably fitted, and an enlarged boss portion 55 at the tip of the pivot shaft portion 51. It is molded into.

The outer end 51a side is cut deeper than the outer diameter so as to guide the inner end 81 of the flat spiral spring 80 as shown in FIG. 6 to the pivot 51 of the shaft member 50, and the pivot 51 extends in the axial direction. An inclined guide groove 52 is formed to be shallow to the outer diameter of the.

On the outer end 51 a of the pivot portion 51, a fitting protrusion 53 that fits into the base plate 42 of the housing 41 is provided to project.

The boss portion 55 of the shaft member 50 has a deformed projection 56 projecting from the outer end thereof and a locking groove 57 formed on the outer periphery thereof, and the inner diameter portion 82 of the spiral spring 80 has an outer diameter just wound.

The deformed projection 56 is formed in a deformed shape by cutting out one side of the outer diameter of the circumferential shape so as to fit into the bottom plate 44a of the housing portion 44 of the case 43 of the housing 41 so as not to rotate.

The locking groove 57 is located at a position where the guide groove 52 of the pivot shaft portion 51 reaches the outer diameter, has a holding upper end 57 a that is cut inward from the outer diameter of the pivot shaft portion 51, and Edge 8
It has a width and a length for locking 1. The holding upper end 57a is set at a position where the inner diameter portion 82 of the spiral spring 80 can be floated from the driven drum 70.

The main drum 60 is the housing portion 4 of the case 43 of the housing 41.
4, a bobbin portion 61 is rotatably supported by a pivot portion 51 of the shaft member 50, and one end of the cable 20 is wound around and fixed to the outer periphery.

As can be seen from FIGS. 1 and 2, an output end member 45 a of the electric motor 45 is connected to the main drum 60 via a buffer member 46.

The driven drum 70 constitutes a tension adjusting mechanism in cooperation with the main drum 60.

The driven drum 70 is located inside the housing portion 44 of the case 43 of the housing 41, has a bobbin portion 71 around which the other end of the cable 20 is wound and fixed, and overlaps the main drum 60. Has a tooth portion 72 which is engaged with the tooth portion 62 engraved on the end surface of the tooth portion in only one direction and slides in the opposite direction.

A recessed portion 73 is formed in the driven drum 70, and the spiral spring 80 is housed therein. The outer end of the spiral spring 80 is locked to a part of the recessed portion 73, and the driven drum 70 is connected to the cable 2
When 0 sags, it is biased to rotate in a direction to absorb the slack.

Further, the driven drum 70 is pivotally supported by the pivot portion 51 of the shaft member 50 so as to be movable in the axial direction when the tooth portion 72 slides with respect to the tooth portion 62 of the main drum 60, and is moved toward the main drum 60 side by the wave spring 90. It is urged to press.

Next, the operation will be described.

The drive unit 40 can be assembled as follows.

The deformable projection 56 of the shaft member 50 is inserted and fitted into the bottom plate 44a of the housing portion 44 of the case 43, and is fixed by caulking. The spiral spring 8 is attached to the shaft member 50 from the fitting projection 53 side.
0, the driven drum 70, and the main drum 60 are externally inserted.

The spiral spring 80 is inserted into the guide groove 52 from the outer end 51 a of the inner end 81 of the spiral drum 80 in the recessed portion 73 of the driven drum 70 and is engaged with the guide groove 52. Then, the spiral spring 80 is pushed by the bottom surface of the recessed portion 73 of the driven drum 70 and is pushed toward the bottom plate 44a.

When the driven drum 70 is pushed in sufficiently, the inner end 81 of the spiral spring 80 moves in the guide groove 52 of the pivot portion 51 to move to the boss portion 55.
And is locked in the locking groove 57, and the inner end 8 of the spiral spring 80 is moved.
1 and the inner diameter portion 82 are driven by the upper end 57a of the driven drum 7
It is lifted so as to float from the bottom surface of the recessed portion 73 of 0.

If the main drum 60 is fitted after the driven drum 70 and the base plate 42 and the case 43 are fixed, they are held so as not to be disassembled. Further, the electric motor 45 is fixed to the base plate 42, and the output end member 45a is connected to the main drum 60.
Connect to.

When the electric motor 45 is activated, the main drum 60 is rotated and the cable 20 is wound or unwound. On the contrary, the driven drum 70 feeds or winds the cable 20.

If the cable 20 moves the carrier plate 35 and raises the window glass when the main drum 60 winds the cable 20, the cable 20 on the winding side becomes stretched due to the sliding resistance of the window glass and is driven. The cable 20 wound by the drum 70 tends to be loosened.

When the loosened cable 20 becomes slack, the driven drum 70 rotates relative to the main drum 60 by the biasing force of the spiral spring 80, and absorbs the slack.

When the driven drum 70 rotates relatively, the teeth 62, 7
Although the driven drum 70 moves in the axial direction by the height of the two teeth, the normal engagement is restored by the urging force of the wave spring 90.

When the driven drum 70 winds the cable 20, the tooth portions 62 and 72 mesh with each other, and the main drum 60 and the driven drum 70 rotate integrally.

Although the slack of the cable is absorbed when the window glass is raised in the above-described embodiment, the slack of the cable may be absorbed when the window glass is lowered.

[Advantage of the Invention] According to the cable type window regulator device for an automobile of the present invention, when the tension adjusting mechanism is provided in the driving portion, the shaft member is made single and the main drum and the driven drum for driving the cable are unidirectional. Since it is possible to assemble the drive unit by fitting it in from above, the structure is simplified, the assembly process can be rationalized, and the cost can be reduced together with the reduction in the number of parts.

[Brief description of drawings]

1 to 6 show an embodiment of the present invention.
The figure is an exploded perspective view of the regulator device, FIG. 2 is the same perspective view, FIG. 3 is a cross-sectional view of the drive portion, FIG. 4 is a perspective view of the shaft member, FIG. 5 is the same vertical sectional view, and FIG. FIG. 7 is a partial perspective view of the spiral spring, and FIG. 7 is a cross-sectional view of a drive unit of a conventional example. 10 ... Regulator device, 20 ... Cable 40 ... Drive part, 41 ... Housing 42 ... Base plate, 43 ... Case 50 ... Shaft member, 51 ... Pivot part 52 ... Guide groove, 53 ... Fitting Attachment protrusion 55 ... Boss portion, 56 ... deformed protrusion 57 ... Locking groove, 60 ... Main drum 70 ... Driven drum, 62,72 ... Tooth portion 73 ... Indentation portion, 80 ... Swirl spring 81 …… Inner end, 82 …… Inner diameter part

Claims (1)

[Scope of utility model registration request] 1. A window regulator device for raising and lowering a window glass by locking the window glass to a cable arranged in the window glass storage portion, wherein a main drum and a driven drum around which the cable is wound are superposed and driven in the housing storage portion. A driving part of the cable is formed by pivotally supporting the drum so that the drum is at the back, and tooth portions are formed on the end surfaces where the main drum and the driven drum overlap each other, and the driven drum connects the tooth portions with each other in the cable winding direction. In the structure in which the tension adjusting mechanism is configured by rotatably engaging the driven drum with a flat spiral spring for absorbing slack, the driven drum is biased in the cable winding direction, and the main drum and the driven drum rotate freely. A shaft member that is pivotally supported by the housing and that locks the inner end of the spiral spring is fixed to the bottom plate of the housing portion of the housing. A pivot shaft portion into which the ram and the driven drum are rotatably fitted and a boss portion winding around the inner circumference of the spiral spring are integrally formed, and the pivot shaft portion guides the inner end of the spiral spring. , The end side is cut deeper than the outer diameter and extends in the axial direction to form an inclined guide groove that becomes shallower to the outer diameter, and the boss portion is located at a position continuous with the guide groove of the pivot portion. A groove formed inward of the outer diameter of the spiral spring for locking the inner end of the spiral spring, and a projection provided with a deformed projection that is non-rotatably fitted to the bottom plate of the housing portion of the housing. Characteristic window regulator device.