JPH024227Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a tape-type wind regulator for automobiles, and particularly to a tape for raising and lowering the windshield.

Conventionally, in this type of window regulator, a single flexible tape with an end is provided so as to be slidable along a curved guide provided within the space of the automobile door, and the tape is slid along this guide. The structure was such that the window glass, which was secured to the tape, could be raised and lowered to open and close.

In this conventional type of arrangement, a tensile load and a compressive load are applied alternately to a portion of the tape to raise and lower the window. In order to withstand the respective forces derived from both the tensile and compressive loads and to maintain the tape's sliding path normally, the cross-sectional shape of the guide must be designed to surround the cross-section of the tape and maintain rigidity. Therefore, the tape itself needs to be fairly thick to maintain its rigidity. If the rigidity of the tape is high, there will be disadvantages such as the sliding resistance of the tape when passing through a part with a small radius of curvature of the guide will increase, and the overall weight of the guide will also increase in order to maintain the rigidity of the guide. .

Therefore, in the present invention, an endless tape is used, and the reciprocating sliding of the tape is performed by a tensile load applied to the tape. As a result, the guide that guides the tape is only subjected to a component of force directed toward the center of curvature of the guide, so the cross-sectional shape of the guide is different from the conventional one in that it receives the movement of the tape outward from the center of curvature. The part becomes unnecessary. Therefore, in addition to reducing the weight of the entire guide and simplifying the cross-sectional shape of the guide and making it easier to process, it is also possible to make the tape thinner and increase its flexibility, thereby reducing the sliding resistance of the tape. There are advantages to be gained.

The main idea will be explained below with reference to the figures.

In FIG. 1, the upper part 1 is a car window glass. A glass bracket 2 is fixed to the lower edge of this window glass by a rivet 3. The guide 4 has an endless curved loop shape as shown in the figure, and a flexible driving tape 5 (FIG. 2) is guided by this guide 4 and slides thereon. The bracket 2 is fixed to this tape 5. Therefore, when the tape 5 is slid on the guide 4, the window glass 1 moves up and down in the direction of the arrow, opening and closing the window glass of the automobile door. Reference numeral 6 on the left side of FIG. 1 is a drive device for the tape 5.

Each of the parts described above is installed in a thin space between an inside panel and an outside panel of an automobile door. The upper part 9 in FIG. 1 is an upper bracket for fixing the guide 4 to the inside panel, and the lower part 10 in the same figure is a lower bracket for fixing the guide 4 to the inside panel. The drive device 6 is fixed to the inside panel by a base 11. The drive device 6 has a handle shaft 1
2 (Fig. 2) and attach the manual operation handle to it.

As shown in Figures 2 and 3, the base 11 has three
Holes 13 are provided for tightening bolts to the inside panel. The drive device 6 has a configuration as shown in FIG.
6 so that they rotate together. Each tooth 20 of the sprocket wheel 16 engages with each hole in the tape 5, as shown at the left end of FIG.
A coiled torsion spring 21 surrounding the outer periphery of the core 14 has both ends bent inward to engage an axial groove 22 of the core 14, and a finger 15a of the pinion plate 15 is inserted between the two ends. interposes, and constitutes a well-known windshield backlash prevention device. The torsion spring 21 cooperates with the case 23 surrounding it to prevent back movement. Further, the spiral spring 17 shown in the lower part of FIG. 2 has its outer end engaged with the protrusion 18 of the base 11, and its inner end engaged with the slit 8 of the drive shaft 12, so that the drive torque of this shaft and the load of the windshield are It acts as a balancing act.

The features of the present invention will be explained in detail below.

As shown in FIG. 1, the entire guide 4 has a closed loop shape, and the tape 5 (FIG. 2) has an endless band shape along the guide 4. Each tooth 20 of the sprocket wheel 16 of the drive device 6 has a third
It engages with a series of holes in the tape 5 as shown. When the sprocket wheel 16 is driven, the tape 5 slides along the guide 4. Regardless of the sliding direction, the tape 5 is moved by a tensile load, and the load applied to the guide 4 from the tape 5 is a force directed toward the center of the guide's curvature, and a force in the opposite direction to this force. is not added. Therefore, it is sufficient for the cross-sectional shape of the guide 4 to be a trough-like cross-section that is open toward the outside of the loop of the guide, as shown at the left end of FIG. The use of a trough-shaped guide whose cross section is open radially outward of the sprocket wheel makes it possible to reduce the weight of the guide compared to the use of a guide without such an open section, and also to reduce the weight of the tape. This produces effects such as facilitating attachment to the guide (the open part of the guide can be used for attaching the tape). In addition, since only a tensile load is applied to the tape 5 itself and no compressive load is applied to the tape 5 itself, the tape 5
It becomes possible to reduce the thickness of the device itself. As a result, the guide has a light and simple structure, which helps to reduce the overall weight of the door, and the use of thinner tape increases the flexibility of the tape.
This has the advantage that sliding resistance can be reduced.

In the embodiment shown in FIG. 4, the drive device 6' is arranged outside the guide 4'.

[Brief explanation of drawings]

FIG. 1 is a front view of the regulator of the present invention, FIG. 2 is a sectional view of the drive device taken along the line shown in FIG. 3, FIG. 3 is a front view of the same drive device, and FIG. 4 is a front view of another embodiment. It is. 1...Window glass, 2...Glass bracket, 4...Guide, 5...Tape, 6...Drive device, 16...Sprocket wheel.

Claims (1)

[Scope of utility model registration request] a wind bracket fixed to the lower edge of the windshield of an automobile; a guide bent in a closed loop shape fixed to the inside panel side of the door;
It has a flexible endless tape fixed to the wind bracket and slidable along the guide, and a drive device fixed to the door side and equipped with a sprocket wheel, and the guide is attached to the sprocket wheel. The sprocket wheel has a trough-like cross-section open radially outwardly so that the sprocket wheel engages a series of holes in the tape, and rotational movement of the sprocket wheel causes the tape to move along the guide. A tape-type wind regulator for automobiles, which is characterized by sliding.