JPH0460085A - Driving device for cable type window regulator - Google Patents

Abstract

PURPOSE:To improve the durability of springs by separately arranging a drum winding the cable of a window regulator and a spring case via a power transmitting means, and storing the springs in both of them. CONSTITUTION:When a crank handle 10 is rotated in the arrow A direction, a spring case 2 is rotated in the arrow A direction by the coupling between a notch section 15 and a coupling projection 13. When the second gear 25 engaged with the first gear 12 is rotated in the arrow C direction, a drum 4 is rotated in the arrow C direction by the coupling between the first ratchet teeth 23 and the second ratchet teeth 26, the second cable 28 is wound, the first cable 27 is delivered, and a window glass is lifted. When the crank handle 10 is rotated in the arrow B direction, the above objects are rotated in the opposite directions, the first cable 27 is wound, and the window glass is lowered. A large balancing force can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a drive device for a cable type window regulator. More specifically, the present invention relates to a device for driving a cable in a cable type window regulator for opening and closing window glass of automobiles, buildings, etc.

[Prior Art] Some conventional drive devices for cable-type window regulators have a spiral spring (balance spring) for balancing the operating force when the window glass is raised and lowered (for example, Japanese Patent Laid-Open No. 58 -94665). In such a device, as shown in FIG. 8, a spiral spring (50) is concentric with a pair of wire-driving drums (52), (53) separated so as to mesh with ratchet teeth 51). They are placed in one drum (53) and housed in a housing (54).

Also, as shown in Figure 9, the spring case (5I) meshes with the ratchet teeth (5I) around the drum.
It is also known that it consists of a plate-shaped spring (55) and one drum (56), and a large spiral spring (57) is housed inside the spring case (55) (Japanese Patent Application Laid-open No. 60=246977).

In those devices, a spiral spring (50), (
The outer and inner ends of the drum (53) and the inner wall of the spring case (55) and the housing (54)
The drum (53),
(56) is biased to rotate in one direction directly or via a spring case.

[Problem to be solved by the invention] The drive device shown in FIG. 8 uses a spiral spring (50
) is limited by the drum (53), so
It is not possible to maintain proper balance against heavy window glass.

In addition, the drive device shown in Figure 9 uses a larger spiral spring than the device shown in Figure 8, but if a spring with a large spring constant is operated repeatedly under high operating torque, durability cannot be ensured. There's a problem. On the other hand, if durability is ensured, it will not be possible to change enough torque to balance the weight of the window glass.

An object of the present invention is to provide a drive device for a window regulator that can simultaneously achieve the incompatible properties of a spiral spring, such as high torque and durability, without increasing the size of the device (especially in the thickness direction of the door panel). The purpose is

[Means for Solving the Problems] In a first aspect, the drive device of the present invention includes a (ω housing) and a drive unit rotatably supported within the interview housing for winding and sending out a cable for lifting and lowering a window. a drum; (c) a first spring disposed concentrically within the drum and for biasing the drum to rotate in one direction; and (c) a first spring rotatably supported within a housing separately from the drum. (e) a first spring disposed concentrically with the spring case and connecting the drum via the spring case and the torque transmission means; The structure is characterized in that it includes a second spring for biasing in the same direction as the biasing direction.

In another aspect of the drive device of the present invention, (ω housing; <b+ a drum rotatably supported within the housing and for winding and sending out a cable for raising and lowering a window; (c) what is the drum? (d) first and second spring cases each rotatably supported within a housing and each connected to the drum via a torque transmission means; (d) each spring case arranged concentrically with the spring case; It is characterized in that it comprises first and second springs for urging the drum in a direction corresponding to the upward movement of the window glass via a spring case and the torque transmission means.

[Function] In the first aspect, the first spring directly biases the drum in the rotational direction corresponding to the upward direction of the window glass, and the second spring biases the drum in the same direction via the spring case and the torque transmission means. to strengthen

In the second aspect, the first and second springs bias the drum to rotate via the spring case and the torque transmission means, respectively.

In this way, in the drive device of the present invention, the two spiral springs work together to urge the drum, so a large balance torque can be applied to the drum, and the torque that one spring should bear is small. It's small enough. Therefore, sufficient durability of the spring is ensured.

Further, in the first aspect, the first spring is housed within the drum, and the second spring is provided separately from the drum, so that the size of the drive device, particularly in the thickness direction, can be reduced.

[Example] Next, a driving device of the present invention will be described with reference to the drawings.

1 and 2 are a cross-sectional view and an exploded perspective view, respectively, showing an embodiment of the drive device of the present invention, and FIGS. 3 and 4 are
The figures are a perspective view from below of the gear and drum of the drive device shown in FIG. 1, FIG. 5 is a perspective view of essential parts of the spring shown in FIG. 1, and FIG. 6 is a window regulator equipped with the drive device of the present invention. FIG. 7 is a front view showing one example, and FIG. 7 is a schematic perspective view showing another embodiment of the drive device of the present invention.

The apparatus shown in FIGS. 1-2 relates to the first aspect of the invention. The housing [1] consists of the main body (1a) and the lid (1).
b). The main body (1a) includes a first chamber (3) in which a spring case (2) is housed, and a drum (4).
) is formed in the second chamber (5). 1st
A partition (6) is provided between the chamber (3) and the second chamber (5).

A first boss (sword) is provided protruding from the center of the bottom of the first chamber (3) of the housing body (1a).

The first boss (7) is connected to the drive shaft (
9) is rotatably supported. And the hole (8) of the lid (tb)
) A motor or crank handle (10) for driving the present drive device is attached to the end of the drive shaft (9) protruding from the
) and other driving means are connected.

A bottomed cylindrical spring case [
21 is rotatably provided in a downward state.

A pre-wound first spiral spring (hereinafter referred to as the first spring) 01) is housed in the spring case (2).

The first spring (Ill has the inner end with the first boss (7)
The outer end is locked to the spring case (21), and urges the spring case (2) to rotate in the direction of the arrow.

A spring case (first gear 02) is integrally formed on the upper outer periphery of the spring case (a), and two conventionally known fan-shaped engagement protrusions are provided on the upper end surface. On the other hand, the drive shaft (
A flange 0Φ is fixed to the flange 9), and the flange aΦ is formed with a fan-shaped notch 6 that engages with the engaging protrusion with play in the rotational direction. As a result, torque transmission between the drive shaft (9) and the spring case (2) becomes possible.

A conventionally known brake spring force is inserted between the outer peripheral surface of the flange of the drive shaft (9) and the inner peripheral surface of the cylindrical chamber 0υ protruding from the lid (1b). Department (
17a) and (L7b) are inserted into the gap between the notch 6 and the engagement protrusion 03, respectively.

The play between the flange 04) and the engagement protrusion U is for operating the brake spring lower).

A second boss aa protrudes from the center of the bottom of the second chamber (5) of the housing body (1a), and a pin inserted through the slit in the lid (1b) is inserted into the second boss 08). The lower end of is inserted. A flange is formed at the upper end of the pin (toward), and a stepped portion to be fitted into the slit (21) of the lid is formed on the lower surface (pin side) of the flange, restraining the rotation of the pin 09. There is.

A drum (4) for winding and feeding the cable is rotatably provided on the outer periphery of the pin f19.

Radial first ratchet teeth are formed on the upper end surface of the drum (4). As shown in FIGS. 1 and 2, the drum (4) has a cavity C8) formed on its lower surface, and a second spring Q4 is accommodated in the cavity S). As shown in FIG. 5, only the lower side of the inner end of the second spring roller 4 is bent inward, and the bent portion (24a) is located at the slit (1) of the second boss □□□.
8a). On the other hand, the outer end (24b) of the second spring Q4 is locked in a slit (4a) formed in the inner wall of the drum (4).

A second gear for transmitting torque between the spring case (2) and the drum (4) is rotatably provided on the pin 09 above the drum (4).

The lower surface of the second gear 4 is formed with radial second ratchet teeth ((2e) in Fig. 3) that engage with the first ratchet teeth of the drum (4). This is to take up the slack in the cable when assembling the regulator, and after the lid (Ib) is firmly attached, the second gear 4 and the drum (4) rotate together.

A first cable for lowering the window glass and a second cable for raising the window glass are wound around the drum (4), and the cable end member (27a) of the first cable is connected to the lower surface of the second gear 5. The cable end member (28a) of the second cable is locked in the first locking part ((27b) in FIG. section ((in Figure 4)
Hb)). The first cable and the second cable sent out from the drum (4) pass through the slit (which may be a hole) provided in the housing (1a) and pass through the conduit (31). Carrier plate ((34) in Fig. 6) attached to the window glass of an automobile ((33) in Fig. 6) through which it passes.1. : Fixed.

Such a drive device is incorporated into, for example, a window regulator shown in FIG. 6 and attached to a door panel of an automobile. In FIG. 6, (35) is a drive device, which is connected via a conduit (31) to a guide rail (36) that slidably guides the carrier bullet (34).

Next, the operation of the drive device configured in a diagonal manner will be explained with reference to FIG.

Crank handle (g) in Figures 1 and 2)
When the spring case (a) is rotated in the opening direction of the arrow, the spring case (a) is also rotated in the direction of the arrow (A) due to the engagement between the notch portion 6 and the engagement protrusion [F].

At the same time, the second gear meshing with the first gear (+21) rotates in the direction of arrow (c), and the engagement of the first ratchet teeth with the second ratchet teeth causes the drum (4) to rotate in the direction of arrow (c).
) also rotates in the direction of the arrow (0). In this case, the second cable is wound up and the first cable is sent out. As a result, the window glass rises.

On the other hand, when the crank handle □□□ is rotated in the direction of the arrow (B), everything rotates in the opposite direction to the above, and the spring case (a is in the direction of the arrow (B), the second gear 4 and the drum (4)
rotates in the direction of arrow D1. As a result, the first cable is wound up and the window glass is lowered.

In such lifting and lowering operations, the first spring
is the spring case (2J1 1st gear 02) and the 2nd
The second springs Q4 directly bias the respective drums (4) to rotate in the opening direction of the arrows through the gear 4, thereby assisting the operating force when the window glass is raised.

In other words, when operating the window regulator, a larger operating force is required to raise the window glass due to its own weight, but the first and second springs work together to increase the force when raising the window glass. reduce the load,
Since the load when lowering is increased, even if the window glass is heavy, it is possible to balance the operating force in both directions.

Note that the drive device of the present invention is not limited to one in which the support shafts of the drum and the spring case are parallel.

If conditions such as installation space permit, the torque may be transmitted vertically via a bevel gear, for example.

In the device according to the first aspect of the present invention shown in FIGS. 1 and 2, the drum (4) is provided with a space S) in which the first spring is accommodated, but as shown in FIG. Two spring cases (2 people), (2B) are arranged separately from the drum,
Two spiral springs (IIA) inside them
, (IIB). In that case, in addition to the spring of the drum (4), or
Instead of the spring in 4), two large springs are used to bias the drum, so a much larger balance force can be applied.

[Effects of the Invention] In the drive device of the present invention, the drum for winding the cable and the spring case are arranged separately with the power transmission means interposed therebetween, and each accommodates a spiral spring. It has the effect of increasing the balance force, reducing the load on each spring, and improving durability.

Furthermore, since the first spring is provided separately from the drum and the second spring is housed within the drum, there is an advantage that the size of the drive device, particularly the dimension in the thickness direction of the door, can be reduced.

[Brief explanation of the drawing]

1 and 2 are a cross-sectional view and an exploded perspective view showing an embodiment of the drive device of the present invention, respectively, and FIGS. 3 and 4 are views from the bottom of the second gear and drum of the drive device of FIG. 1, respectively. FIG. 5 is a perspective view of essential parts showing the second spring shown in FIG. 1, FIG. 6 is a front view showing an embodiment of the window regulator equipped with the drive device of the present invention, and FIG. A schematic perspective view showing another embodiment of the drive device of the invention, and FIGS. 8 and 9 are perspective views each showing an example of a conventional drive device. (Main symbols in the drawing) (1): Housing 12J, (2A), (2B) Varnish sprink case (4
): Drum (9): Drive/driving shaft 01): 1st spring (IIA), (IIB): Spiral spring 02) 2nd 1st gear (lCI=pin (?J, 2nd spring; 2nd gear Patent Applicant Nippon Cable System Co., Ltd. 3rd Second Gear 5 Figure 24a/11A' Skyral Spring 7 Figure 9 Procedure auxiliary device (voluntary) 5 Detailed Description of the Invention in the Specification Subject to Amendment ” column on May 14, 1991, amendment 6 to the bottom line of page 15 of the specification, amend it to read “Arrow (Ama direction)” and “Arrow 1 case display 1990 Patent Application No. 169085 mark (c) direction.” 2. Name of the invention Cable-type window regulator drive device 3. Relationship to the person making corrections case

Claims (1)

[Scope of Claims] 1 (a) a housing; (b) a drum rotatably supported within the housing for winding up and feeding out a cable for raising and lowering a window; (c) a drum concentrically located within the drum; (d) a first spring that is rotatably supported in a housing separately from the drum and that is disposed in the housing and that biases the drum to rotate in one direction; (e) a spring case that is arranged concentrically with the spring case and biases the drum in the same direction as the biasing direction of the first spring via the spring case and the torque transmission means; A cable type window regulator drive device comprising a second spring for driving. 2. The drive device according to claim 1, wherein a drive means is connected to the spring case, and a rotational operation of the drive means is transmitted to the drum via the spring case. 3. The rotational axes of the drum and the spring case are parallel to each other, and the torque transmitting means is connected to external teeth formed on the outer periphery of the spring case and the drum so as to be capable of transmitting torque, and the torque transmitting means is connected to the external teeth formed on the outer periphery of the spring case so as to be capable of transmitting torque. 2. The drive device according to claim 1, comprising a matching gear. 4 First ratchet teeth are formed radially on an end surface of the drum facing the gear, and first ratchet teeth are formed on the gear.
4. The drive device according to claim 3, further comprising second ratchet teeth that mesh with the ratchet teeth. 5 (a) a housing; (b) a drum rotatably supported within the housing for winding up and sending out a cable for raising and lowering a window; and (c) a drum rotatable within the housing separately from the drum. (d) first and second spring cases supported by the drum and connected to the drum via torque transmission means, respectively; A drive device for a cable type window regulator comprising first and second springs for biasing the drum in a direction corresponding to the upward movement of the window glass via a transmission means. 6. The drive device according to claim 5, wherein a drive means is connected to the first spring case, and a rotational operation of the drive means is transmitted to the drum via the first spring case. 7. The rotation axes of the drum and the first and second spring cases are parallel to each other, and the torque transmission means is capable of transmitting torque to external teeth formed on the outer peripheries of the first and second spring cases and to the drum. 6. The drive device according to claim 5, further comprising a gear connected to said external teeth and meshing with said external teeth. 8 First ratchet teeth are formed radially on an end surface of the drum facing the gear, and first ratchet teeth are formed on the gear.
8. The drive device according to claim 7, further comprising second ratchet teeth that mesh with the ratchet teeth.