JPH0612152Y2 - Wire drive window regulator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a guide rail in which a wire is reciprocated so that a carrier plate and a window glass supported by the carrier plate are oriented substantially vertically. The present invention relates to a wire-driven window regulator mainly for an automobile, which is configured to be moved up and down along a line.

[Conventional technology]

A conventional window regulator of this type is disclosed in, for example, Japanese Patent Application Laid-Open No. 59-130985.

As shown in FIG. 6, this conventional window regulator is provided with a guide rail (a) fixed in the door so as to face substantially vertically, and slidably mounted on the guide rail (a). And a carrier plate supporting the window glass (b)
(c) and a pair of upper and lower wire guide members provided at positions close to the upper and lower parts of the guide rail (a) in the door
(d) and (d) are connected to the carrier plate (c) and are reciprocated by a drive device (e) that is hung around both the wire guide members (d) and (d) and is installed in the door. It consists of a wire (f) that allows it to run.

[Problems to be solved by the invention]

In recent years, not only the vehicle body but also the door and its window glass are formed into a curved surface, so that there is a tendency to improve the aesthetic appearance and expand the interior space of the vehicle.

For that purpose, the shape of the guide rail that guides the up and down movement of the window glass must also be curved so that the central portion bulges outward in accordance with the curved shape of the window glass and the door.

However, in the conventional window regulator as described above, as the radius of curvature of the guide rail (a) is made smaller, the runway length of the wire (f) expands and contracts due to the vertical position of the carrier plate (c). However, it is difficult to set the tension of the wire (f).

That is, as shown in FIG. 5, when the guide rail (a) is curved outward, the carrier plate (c) is located substantially at the center of the guide rail (a) as shown by the solid line in the figure. As shown by the phantom line in the figure, the length of the runway (l1 + l2) of the wire (f) between the upper and lower wire guide members (d) and (d) when the carrier plate (c ) Is the guide rail
It is longer than the runway length (l3 + l4) of the wire (f) when it is located near the end of (a), and the tension of the wire (f) is at the center of the carrier plate (c). If the carrier plate (c) is moved closer to the end of the guide rail (a), the wire (f) will loosen and the tension of the wire (f) will be changed by the carrier plate (c). , If it is set according to the position near the end of the guide rail (a), when the carrier plate (c) comes to the center, the wire (f) becomes too tight and the carrier plate (c) cannot slide. There is a problem such as

This problem becomes more serious as the radius of curvature of the guide rail (a) becomes smaller.

Further, as shown in FIG. 5, the larger the deflection angle (θ) of the wire (f) in each wire guide member (d), the greater the
There is also a problem that stress acts on each wire guide member (d) in an undesired direction, and the durability of the wire guide member (d) and the wire (f) deteriorates.

Furthermore, in order to prevent wire abrasion due to friction with other members and wire rusting due to rainwater, etc., it is desirable to keep grease on the surface of the wire at all times. Since it is difficult to provide a means for supplying the grease, it is the current situation that only the grease is attached to the wire surface at the time of the first assembly, and the grease is hardly attached to the wire surface thereafter.

Therefore, the grease that first adheres to the wire surface may be washed away by rainwater or the like, and thereafter, the wire may be abraded due to friction with other members, or rust may occur on the wire surface.

An object of the present invention is to provide a wire drive window regulator which solves the above problems.

[Means for solving problems]

The present invention is directed to a guide rail that is fixed in the door so as to face substantially in the vertical direction and that is curved so as to bulge laterally, and is slidably mounted on the guide rail and has a window glass. A carrier plate for supporting, a pair of upper and lower wire guide members provided in positions close to the upper and lower portions of the guide rail in the door, and connected to the carrier plate and hung around both wire guide members. In a wire drive type window regulator made of a wire that can be reciprocated by a drive device provided in the door, a wire is formed by slidingly contacting the wire at an intermediate portion of a curved portion of the guide rail. Is provided with a sliding contact member that approximates the running path of the guide rail to the curved surface of the guide rail, and the surface of the sliding contact member that is in sliding contact with the wire is It is characterized in that a lubricant storage groove for reservoir grease facing direction intersecting with.

[Action and effect]

According to the present invention, when the wire slides back and forth to raise and lower the window glass together with the carrier plate, the wire slides on the sliding contact member so that the carrier plate is positioned substantially in the center of the guide rail. , The wire running path length between the upper and lower wire guide members when the carrier plate is located near the end of the guide rail can be made substantially equal, and thus the wire running path length associated with the lifting and lowering of the carrier plate. Change as much as possible,
The tension of the wire can be easily set.

Further, the deflection angle of the wire in each wire guide member can be made small, thereby preventing the stress acting on the wire guide member or the wire in an undesired direction,
It is possible to prevent deterioration of their durability.

Further, by storing the grease in the oil storage groove, this grease can be leached to the sliding contact portion between the sliding contact member and the wire, and the sliding of them can be smoothed, and rust on the wire surface can be prevented. Can be prevented.

In this case, by setting the direction of the oil storage groove to intersect with the wire, even if the sliding contact position of the wire with respect to the sliding contact member is slightly deviated to the side, the wire does not come off from the oil storage groove and The accumulated grease can always be reliably supplied to the sliding contact portion between the sliding contact member and the wire,
The oil storage capacity can be increased.

Further, the oil storage groove serves as a bead for reinforcing the sliding contact member, and the rigidity of the sliding contact member can be enhanced.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 4.

(1) is the door of the car, as is well known, the inner panel
It consists of (2) and an outer panel (3).

An opening (5) for moving up and down the window glass (4) is formed between the upper ends of the inner panel (2) and the outer panel (3) (see FIG. 3).

(6) is a window regulator, which is mainly composed of the following main members.

In other words, the window regulator (6) has a pair of front and rear guide rails (7) (7) that are substantially U-shaped in cross section and that are inclined in general toward the upper rear side and are parallel to each other.
And the front and rear ends are fixed to the upper, middle and lower portions of both guide rails (7) and (7) respectively, and the upper, middle and lower three-stage support plates (8)
(9) Hold the guide rail (7) with the appropriate number of rollers (11) that roll along each guide rail (7).
A pair of front and rear carrier plates (13) that are slidably attached to the window glass (4) and are connected to the lower end of the window glass (4) by a bolt and nut (12), and a support plate (9) in the middle position. A motor (1) pivotally mounted on the shaft (14) and mounted on the support plate (9)
5) and the take-up drum (17) that can be rotated forward and backward by the speed reducer (16), and a carrier plate with one end being rearward.
A guide pulley that is an upper wire guide member that is fastened to (13) and rises in parallel with the guide rail (7) and then is pivotally supported by an upper support plate (8) with a shaft (18). (19)
About half way around, and the other end is fastened to the ascending wire (20) wound on the winding drum (17), and one end is fastened to the rear carrier plate (13), and from there the guide rail
After hanging down in parallel with (7), the support plate (10) is rotated about halfway around a guide pulley (22), which is a lower wire guide member pivotally supported by a shaft (21), and the other end is It is composed of a descending wire (23) wound around a winding drum (17) in a direction opposite to the winding direction of the ascending wire (20).

This window regulator (6) consists of upper and lower support plates (8) (10).
The inner panel with appropriate bolts and nuts (24)
It is fixed in the door (1) by being fixed to the (2) side.

As clearly shown in FIG. 3, the front shape of both guide rails (7) and (7) is such that when the entire window regulator (6) is installed in the door (1), the outer panel (3) of the door (1) is ) Is curved so that the central portion bulges outward so as to form a curved surface that is substantially parallel to the curved surface of FIG.

Also, as shown in FIG. 4, both side edges of the opening of each guide rail (7) are slightly bent inward so that the roller (11) does not fall off the guide rail (7). ing.

A drive device (25) for reciprocating both wires (20) and (23) is formed by the motor (15), the reduction gear (16), the winding drum (17), and the like. 25) is supported by the middle support plate (9).

In this embodiment, by bending the rear end portion of the middle support plate (9) supporting the drive device (25) in a stepwise manner toward the outside, the guide rail (7) is bent. In the middle part of the part, sliding contact with one of both wires (20), (23) so that the runway of both wires (20) (23) approximates the curved surface of the guide rail (7). A member (26) is formed.

The sliding contact member (26) does not prevent the rearward carrier plate (13) from moving up and down along the guide rail (7), but it is preferable that the sliding contact member (26) be provided as close to the carrier plate (13) as possible.

When the rear carrier plate (13) overlaps the sliding contact member (26), neither of the wires (20) (23) slides on the sliding contact member (26). Plate (13)
When the carrier plate (13) rises from that position, the descending wire (23) slides on it when the carrier plate (13) rises from that position. Contact.

A substantially horizontal concave groove-shaped oil storage groove (27) is formed on the outer surface of the middle portion of the sliding contact member (26). By storing grease (not shown) in the oil storage groove (27), Grease is a sliding contact member (2
6) and the wires (20) and (23) are leached to the sliding contact portion to smooth their slip and prevent the generation of rust on the wire surface.

Further, by setting the direction of the oil storage groove (27) so as to intersect with the wires (20) and (23), the wire (20) with respect to the sliding contact member (26) is
Even if the sliding contact position of (23) is slightly displaced to the side, the wire (20) (23)
Does not come off from the oil storage groove (27), so that the grease stored in the oil storage groove (27) is always reliably contacted with the sliding contact member (26) and the wire (20) (2).
3) It can be replenished in the sliding contact area with and can increase the oil storage capacity.

Further, the oil storage groove (27) serves as a bead for reinforcing the sliding contact member (26) to enhance the rigidity of the sliding contact member (26).

Since this embodiment is constructed as described above, the motor (15) is actuated to rotate the winding drum (17) counterclockwise in FIG.
Winding wire (20) is wound around (17), and descending wire (23) is wound out so that the window glass (4) can be lifted together with the rear carrier plate (13), and the winding wire (23) can also be wound. By rotating the take-up drum (17) in the opposite direction to the above case, the descending wire (23) is wound around the take-up drum (17), and the ascending wire (20) is fed out to the rear side. The window glass (4) can be lowered together with the carrier plate (13).

The front carrier plate (13) slides along the front guide rail (7) following up and down of the window glass (4) to smoothly guide the up and down of the window glass (4).

Further, when the wires (20) and (23) are reciprocated to raise and lower the window glass (4) together with the carrier plate (13), as shown by the solid line in FIG. 3, the carrier plate (13) is guided by the guide rail. When located in the substantially central part of (7), the carrier plate (13) overlaps the sliding contact member (26) and the wire (20) (23)
Does not slide on the sliding contact member (26), but as the carrier plate (13) moves away from the central position, the wire (20) (or the wire (2
3)) slide-contacts the slide-contact member 26, where the running locus of the wire 20 is bent so as to approximate the curved surface of the guide rail 7.

As a result, as shown by the solid line in FIG. 3, the wire (20) between the upper and lower guide pulleys (19) and (22) when the carrier plate (13) is located substantially in the center of the guide rail (7).
The runway length (l5 + l6) of (23) and the upper and lower guides when the carrier plate (13) is located near the end of the guide rail (7) as shown in phantom in FIG. The runway length (l7 + l8 + l9 + l10) of the wires (20) and (23) between the pulleys (19) and (22) becomes substantially equal.

In this way, as the carrier plate (13) moves up and down, the wire
Since it is possible to reduce the change in runway length of (20) (23) as much as possible,
It is easy to set the tension of the wires (20) (23).

Also, the wires (20) (23) in each guide pulley (19) (22)
The deflection angle (θ) of can be made small, and by this,
It is possible to prevent stress in an undesired direction from acting on the guide pulleys (19) (22) and the wires (20) (23) and prevent deterioration of their durability.

[Modification]

In the above embodiment, the ascending wire (20) and the descending wire (23) are separate bodies, but they are formed by one wire and a part of them is formed by the carrier plate (13). ) And may implement.

The sliding contact member (26) may be formed separately from the support plate (9) and fixed to the guide rail (7).

Further, the drive unit (25) may be of a manual type similar to the conventional example shown in FIG.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of the present invention, FIG. 2 is a partially cutaway side view showing a state in which the window regulator shown in FIG. 1 is attached to a door, and FIG. -A sectional view taken along the line A, Fig. 4 is an enlarged sectional view taken along the line B-B in Fig. 2, Fig. 5 is a longitudinal sectional view showing the operating state of the conventional window regulator, and Fig. 6 is shown. It is a side view which shows an example of the conventional window regulator. (1) Door (6) Window regulator (7) Guide rail, (8) (9) (10) Support plate (13) Carrier plate (19) (22) Guide pulley (wire guide member) (20) (23) Wire, (25) Drive device (26) Sliding member, (27) Oil storage groove

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Yoshimitsu Takeda Inventor, Yoshimitsu Takeda 2 Takaracho, Kanagawa-ku, Yokohama, Kanagawa Nissan Motor Co., Ltd. (56) References: 60-195464 (JP, U)

Claims (2)

[Scope of utility model registration request] 1. A guide rail fixed in the door so as to be oriented substantially vertically and curved so as to bulge laterally; and a window glass which is slidably mounted on the guide rail. And a pair of upper and lower wire guide members provided in positions close to the upper and lower portions of the guide rail in the door, and connected to the carrier plate and hung on both wire guide members. In the wire drive type window regulator consisting of a wire adapted to be reciprocated by a drive device provided in the door, an intermediate portion of the curved portion of the guide rail, by sliding contact with the wire,
A sliding contact member was provided that approximated the running path of the wire to the curved surface of the guide rail, and a surface of the sliding contact member that slidably contacted with the wire was provided with an oil storage groove for grease storage facing in a direction intersecting with the wire. A wire-driven window regulator characterized in that 2. The wire drive according to claim 1, wherein the sliding contact member is fixed to the guide rail and is formed by a part of a support plate for supporting the wire drive device. Wind regulator.