JPS5850281A - Balance mechanism in window glass lifting and falling apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Jin's invention relates to a balance mechanism that equalizes the steering force in the vertical direction in a vehicle windshield lifting device.

Conventionally, as a lifting device for windshields of automobiles, etc.,
In addition to the arm type using a link mechanism, other types of mechanisms have been proposed, such as the Goldewire type, tape type, and projection rack type.
The present invention relates to a glass lifting device 1ILK which lifts and lowers a window glass connected to a moving body by rotating and moving a moving body such as a tape or a projection rack and a binion meshed with the movable body.

In recent years, there has been a demand for lighter bodies of vehicles such as automobiles in order to save energy and improve fuel efficiency.However, it is desirable to increase the interior living space by widening the interior width as much as possible for the same body width. There is a trend towards this.゛In this case,
The first possible method is to narrow the door width (thickness). That is, by narrowing the door width, it is possible to simultaneously achieve the requirements of reducing the weight of the vehicle body and increasing the width of the vehicle interior.

However, since the door generally has a built-in glass lifting device called a window regulator, it is possible to narrow the door width by a fraction of a second from the standpoint of strength.
However, the reality is that the thickness of the internal glass lifting device itself is a bottleneck, making it impossible to achieve sufficient narrowness.

Focusing on these recent circumstances, Maromoto Motode developed a thin glass screw lifter whose basic structure consists of a moving body and a pinion, which narrows the door width and improves the interior of the vehicle. The most desirable specific structure of each part is to widen the width, reduce the weight of the door, contribute to improved fuel efficiency, and also achieve the reduction in sliding noise and good operability required for lifting devices. My friend, this article provides a balance mechanism that forms part of such a glass cage device.

Generally, in a window glass lifting device, since the weight of the glass always acts on the lifting mechanism, the handle operating force will be different when the glass is lowered and when the glass is raised. Therefore, when the glass is raised, a balance force commensurate with the weight of the glass is required, and the balance mechanism applies that balance force to the lifting mechanism. By the way, various structures have been proposed as means for applying this balancing force, but all of them have the disadvantage of being bulky. There is a way to do this, but since the spindle usually rotates several times to raise and lower the glass, a spiral spring that can be seen in this rotation and generates sufficient balance force would have a large diameter. , cannot be implemented in practice.

The present invention was made against this technical background,
The purpose is to provide a nine-balance mechanism that is simple in structure, easy to assemble, and inexpensive, and is suitable for a lifting device that was developed to be thin and lightweight. . A pinion that meshes with a moving object such as a tape or a projection rack is provided, and a pulley having a circumference shorter than the pitch circumference of the pinion is integrally provided, and one end of the wire is locked to this pulley and wound. Then it's 4K.

By connecting the other end of the wire to the glass holder via the tension spring, the steering force is made uniform, and the rotation of the pinion is decelerated and transmitted to the tension spring, reducing the amount of extension of the tension spring. It is characterized by

The present invention will be explained below based on the drawings.

FIG. 1 shows an example of a grozier rack type windshield lift equipped with a balance mechanism according to the present invention.
Therefore, 1 is a rear door of the automobile 6, 2 is a door sash, and 3 is a window glass, and the window glass 3 is configured to move up and down while being guided along the center sash 2aK. A glass lifting device is built into the door panel Ia of this door. 4 is arranged in a substantially inverted U-shape between the door inner panel and the window glass 3, and is fixed to the side inner panel by brackets 5, 6.18. and 1
A rack 9 made of flexible resin is slidably inserted into the rack case 4 by means of a companion guide rail 7 secured to the door inner panel. Above bracket 6
As shown in FIG. 2, a handle shaft 12 having a pinion lO meshed with the rack 9 at one end and a regulator handle 11 at the other end is rotatably attached. In addition, as shown in FIG. 3, the guide rail 7 is slidably fitted with a roller 14 attached to a glass holder 13 that is engaged with a part of the rack 9. The lower end of the window glass 3 is fixed and held by a pole 15.15.

, Therefore, when the handle 11 is rotated, the binion 1
0 is rotated, the nine racks 9 that engage with this slide inside the rack case 4, and the glass holder 13 that is engaged with the other end of the rack 90 is moved upward or downward, and the glass holder 13Th and the window glass 3 are moved upward or downward. The handle shaft 12 of the handle 1 that is moved up and down along the guide rail 7 is provided with a reversal prevention mechanism 16 of a known structure.

Next, in Fig. 0, which describes an embodiment of the one-pass mechanism using Figs. 1 and 4, 21Fi is a bracket fixed to the upper end of the rack case 4; A second pinion n of the same modiere is rotatably mounted by a shaft 23 so as to mesh with the two pinions 9.

Further, a pulley 24 having a circumference shorter than the pitch circumference of the binion 22 is fixed to the end of this shaft.

One end of a wire 25 is locked to this pulley 24 and wound around the pulley 24, and one end of a tension spring 26 is locked to the other end of this wire 25. The other end of the tension spring 26 is locked to a pin n fixed to the glass holder 13, and the tension spring 26 is inserted between the wire 5 and the bottle 27 with an initial tension applied thereto.

Therefore, when the handle 11 is rotated in the direction of arrow A,
The binion IO rotates and the rack 9 is moved by being pushed by the binion IO, and the rack 9 is held and connected to the rack I)x
When the holder 13 and the glass 3 are lowered, the second pinion η is rotated at 41 by the movement of the two wheels 9, and the pulley 24 is also rotated accordingly. At this time, the circumference of the pulley 24 is nine points shorter than the pitch circumference of the binion n.
The circumferential speed of the pulley 24 becomes slower, and the speed of the wire 25 fed out from the pulley 24 becomes slower than the moving speed of the rack 9.

As the two hooks 9 move, the distance between the lower end of the wire portion and the glass holder 13 increases, and the tension spring 26 is stretched by that amount, thereby storing restoring force. When the handle lO is rotated in the opposite direction to raise the window glass 3, the tension spring 26 stretched in this way contracts due to the speed difference between the glass holder 13 and the wire δ, and the restoring force causes the tension spring 26 to hold the glass holder. 13 upwards, the window glass 3 can be raised with a relatively small handle operating force, thereby equalizing the handle operating force when raising and lowering the glass. Moreover, a tension spring 2 is attached to one end of the wire wound around the pulley 24 which is smaller than the pitch circumference of the pinion 22.
Since one end of the tension spring 26 is locked, the maximum amount of extension of the tension spring 26 is smaller than when it is locked to a fixed side such as a door inner panel, so a tension spring with a short free length can be used. The entire balance mechanism can be configured compactly, and the initial tension of the tension spring 26 can be easily set. FIG. 5 shows the usage range of the tension spring 26.

As shown in the figure, in the present invention, the amount of extension of the tension spring 26 is small and the initial tension can be set large, so the difference in pressure between the top dead center and the bottom dead center is reduced, and the steering force is more uniform. If I can convert it into something, I will be happy.

As explained above, the balance mechanism according to the present invention is provided with a pinion that meshes with the moving body separately from the pinion of the handle shaft, and a pulley having a circumference shorter than the pitch circumference of the pinion is installed on the shaft of this pinion. One end of the wire is secured to the gauze pulley and wound, and a tension spring is interposed between the other end of the wire and the holder, making the overall structure of the balance mechanism simple and compact. Developed as a thin and lightweight warehouse, it is suitable for lifting and lowering snow.It can contribute to narrowing the door width, and it is easy and inexpensive to assemble.9.It is also easy to set the initial tension. It has the following effects.

In the above embodiments, a door window glass elevating device has been described, but it goes without saying that the present invention can also be applied to a rear side window glass elevating device. 't
Furthermore, although the present invention has been described with respect to the projection 1 electric rack type lifting device, it can also be applied to Goldewyer type and tape type lifting devices.

[Brief explanation of the drawing]

FIG. 1 is a side view showing a configuration example of a rack type windshield lifting device to which the balance mechanism according to the present invention is applied;
The figure is a perspective view showing the meshing of the rack and pinion, FIG. 3 is a cross-sectional view taken along the line A-A in FIG. 1, and FIG. 4 is a cross-sectional view taken along the line A-A in FIG. FIG. 6, an enlarged cross-sectional view taken along line B, is a graph showing the characteristics of the tension spring. 1ases, glass storage panel (door panel), 3...
・Window glass, 4...Rack case, 9・Rack, 10...ψ pinion, 11...Handle, 12
...e Handle shaft, 13...Holder, η...Pinion, 24...Pulley, 26...Tension spring. Figure 2 Figure 3

Claims (1)

[Claims] (1) A case placed inside the glass storage panel,
The movable body is slidably inserted into the case, and the binion is fixed to the handle shaft and engages with the movable body, and the movable body is moved along the case by rotating the binion multiple times around the handle shaft. In the windshield lowering device configured to move the windshield mounted on the movable body through a holder and vertically move the windshield, a binion is provided which is separate from the binion and meshes with the movable body. ,
A pulley having a circumference shorter than the pitch circumference of the binion is provided on the shaft of the binion, and one end of the wire is secured to the pulley and wound. 1. A balance mechanism for a wind gas lifting device, characterized in that a tension spring is interposed between the two wind gas lift devices.