JP2501984B2 - Drive unit for a Bowden cable type wind lifter - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drive device for a Bowden cable type wind lifter, which has a plurality of entraining pins on its side surface and is supported in a cable drum casing, and the entraining device. A coupling member which is engaged between the pins and which is fitted into the axially fixed handle shaft and which is form-fittingly coupled with the handle shaft so as to rotate together with the handle shaft; Of the type comprising a bottom lamella forming a bearing for the shaft and covering the cable drum casing. A drive device of the above type for a Bowden cable wind lifter is known, for example from DE-A 3325837.

[0002]

2. Description of the Related Art As is well known, the above-mentioned conventional drive device is
A cable drum is contained in the casing, and a plurality of entrainment pins project in the axial direction on the end face side from the cable drum. A connecting member made of the same member as the handle shaft is engaged between these driving pins. The handle shaft is usually an extruded member, which at one end carried by the casing holds the cable drum and at the other end projects through a bottom lamella covering the cable drum. Serrations are usually provided on the protruding ends, and an operating handle is fitted to the serrations after the wind lifter is assembled.

The wind lifter is attached to an automobile door as follows. That is, the wind lifter is first inserted into the chamber between the outer wall of the door and the inner wall of the door through the correspondingly sized opening in the inner wall of the door, and then the free end of the handle shaft is inserted through the hole in the inner wall of the door. The wind lifter, together with its drive member and the guide rails, is screwed in a purposeful manner, preferably to the inner wall of the door.

To allow this assembly, the length of the handle shaft is not allowed to exceed the specified dimensions. When the handle shaft is too long, the drive member can no longer be inserted between the outer and inner walls of the door, whether it is installed at an angle, tilted or otherwise twisted.

The limitation of the length of the handle shaft resulting from the above is a major drawback for the following reasons. This is because relatively long handle shafts are required, for example due to the ever increasing thickness of the filling of the inner wall of the door and the new design of the handle to be fitted. However, the drive for wind lifters with such relatively long handle shafts has been non-assembleable, so that the desired improvements could not be made to date.

[0006]

SUMMARY OF THE INVENTION The object of the present invention is therefore to overcome the above-mentioned drawbacks of the drive system for Bowden cable type wind lifters of the type mentioned at the outset and to make the handle shaft of any length possible. An object of the present invention is to provide a drive device for a cable type wind lifter.

[0007]

In order to solve this problem, in the structure of the present invention, the cable drum casing is covered by the bottom thin plate, and at least the cable drum, the connecting member and the braking spring are housed in the cable drum casing. In the pre-assembled state of the drive device for the wind lifter, the handle shaft can be inserted into the cable drum casing in the axial direction from the side of the bottom thin plate, and the handle shaft and the connecting member during rotation can be In the position where the complementary molding portions for ensuring the entrainment are engaged with each other, the fixing portions can be fixed by the position fixing member held by the cable drum casing.

[0008]

The main features of the drive device according to the present invention are as follows. That is, the handle shaft and the connecting member are two separate members, of which the connecting member can be fitted into the handle shaft, and the hole of the connecting member and the peripheral portion of the handle shaft are different from each other. Complementary moldings are provided, and the complementary moldings are coupled such that the two members pivot together when engaged with each other. These complementary moldings can be, for example, serrations, or can also be vanes on one member that engage corresponding grooves in the other member. That is, as long as the connecting member and the handle shaft are fitted to each other in the axial direction so that both members can be coupled so as to rotate together,
All shapes, including for example polygonal shapes, can be used for this purpose.

According to the present invention, the member configured as described above enables the following. That is, the cable drum, the connecting member, and the known braking spring are pre-assembled in the cable drum casing together with the bottom thin plate for covering, and then the window lifter together with its drive unit is provided on the door without the handle shaft. Once assembled, the handle shaft can later be inserted into the drive through the inner wall of the door. To limit the insertion depth to the correct amount, the handle shaft has a collar that contacts the bottom lamella in the correct position. When the handle shaft is inserted at the correct depth, the complementary moldings of the handle shaft and the connecting member engage each other, and further the cable drum is supported on the handle shaft, and finally the handle shaft has a bottom part at the other end. It projects into a hole in the cable drum casing which forms another bearing position for the handle shaft which is supported on the lamella.

In this inserted position the handle shaft must be secured against withdrawal. To this end, according to the invention, it is provided that the handle shaft extends so as to project beyond the cable drum casing, and an annular groove is provided at this overlying end, which annular groove is provided. In the inserted state of the handle shaft, a fixing ring or a fixing wire bent into a substantially u-shape or any other fixing member formed according to the purpose is inserted.

In order to allow easy removal of the handle shaft, it is additionally provided that the fixing ring is formed by punching or the fixing wire is integrally formed with a grip knob protruding outward. A hook-shaped tool is engaged with the hole or the grip knob so that the fixing ring or the fixed wire can be pulled out.

[0012]

Embodiments of the present invention will now be described in detail with reference to the drawings.

The cable drum casing 1 shown in the figure is covered by a bottom sheet 2. A cable drum 3 is contained in the chamber defined by this, and a plurality of entrainment pins 3a are provided on one side surface of the cable drum 3. These carry pin 3
A connecting member 4 is supported between a. Carrying pin 3a
The connecting member 4 and the connecting member 4 are surrounded by a braking spring 5 in a known manner.

The cable drum casing 1 has a hole 1 at the center.
a, the cable drum 3 has a hole 3b in the center, and the connecting member 4 has a hole 4a. One end of the handle shaft 6 is inserted into the hole 1a, 3b or the hole 4a until the collar 6a of the handle shaft 6 contacts the bottom thin plate 2. At this insertion position, the handle shaft 6 projects beyond the hole 1a and has an annular groove 6b therein, and the annular shaft 6b is fixed in a substantially u-shape for the purpose of fixing against withdrawal. The wire 7 is clipped.

In the illustrated embodiment, the hole 4a of the connecting member 4
Is equipped with serrations. The handle shaft 6 has a serration 6c corresponding to this serration.
It is provided at a position aligned with the connecting member 4 when the handle shaft 6 is inserted. Therefore, the handle shaft 6 and the connecting member 4 are coupled so as to rotate together when the handle shaft 6 is inserted. (As already mentioned elsewhere, serrations do not necessarily have to be used here;
All complementary configurations are conceivable, in which the and the handle shaft 6 are pivotally coupled together. ) Especially Figure 1
As can be seen, by virtue of the fact that the drive according to the invention is divided in two into the handle shaft 6 and the connecting member 4, the assembly height of the drive is significantly saved. The total assembly height is only the dimension H. It is the length L of the handle shaft 6 that is saved. Therefore, inserting and assembling a Bowden cable type window lifter with a drive according to the invention through holes in the inner wall of the door is much easier than the insertion and assembling that can be done with a corresponding window lifter according to the prior art. is there. Hence,
The padding on the inner wall of the door can also be made very thick and the handle 8 can also be fitted tightly on the handle shaft 6 by another relatively thicker mechanism. The length of the handle shaft 6 is not limited to this extent.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a drive device according to the present invention in a pre-assembled state.

FIG. 2 is an exploded perspective view of individual members of the drive device.

[Explanation of symbols]

1 cable drum casing, 1a hole, 2
Bottom thin plate, 3 cable drum, 3a carrying pin, 3b hole, 4 connecting member, 4a hole,
5 Braking spring, 6 Handle shaft, 6a
Tsuba, 6b annular groove, 6c serration, 7
Fixed wire, 8 handles

Claims (3)

(57) [Claims] 1. A driving device for a Bowden cable-type window lifter, the cable drum (3) which comprise a plurality of entrainment pins (3a) on the side surface side thereof is supported in the cable drum casing (1) and , The driving pin (3
a) fitted into a handle shaft (6) which is engaged between and is fixed in position in the axial direction, and
Handle shaft to pivot with each other
A connecting member (4 ) for form-fitting connection with (6) and a bottom lamina (2) forming a bearing for the handle shaft (6 ) and covering the cable drum casing (1). in of the type comprising a cable Dora
The casing (1) is covered by the bottom sheet (2).
And less in the cable drum casing (1)
Both cable drum (3), connecting member (4), and braking spring
(5) and a drive device for a wind lifter, which is housed in
The handle shaft (6) can be inserted into the cable drum casing (1) in the axial direction from the side of the bottom thin plate (2) in the pre-assembled state of the installation, and is connected to the handle shaft (6) during rotation. in the position complementary shaped portions to ensure entrainment of the member (4) are engaged with each other, cable
Position fixing member held by the bull drum casing (1)
A drive device for a Bowden cable type wind lifter, which can be fixed by the . 2. A position fixing member provided with an annular groove (6b) at the protruding end of the handle shaft (6).
Characterized in that it is formed as a spring ring (7), the driving apparatus according to claim 1. 3. The spring ring (7) is provided with a hole or an outwardly projecting gripping knob or a bend or the like, and the spring ring (7) is provided with an annular groove (6b). The drive device according to claim 2 , wherein a hook-shaped tool can be inserted for the purpose of pulling out from the drive device.