JPS6383384A - Rising and falling apparatus - Google Patents

Abstract

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

Description

[Detailed description of the invention] The lifting device of the present invention will be explained according to the following items.

A. Industrial field of application B0 Overview of the invention C9 Prior art [Figure 10] D1 Problem to be solved by the invention E6 Means for solving the problem F Example F-1 First example [Figures 1 to 4] a. Overview [Figure 2] b. Guide rail [Figures 1 to 4] C0 drive section [Figures 1 and 2] d. Bracket [Figure 1, Figure 2 e, Slide rack [Figures 1 to 4] f, Gear group [Figures 1 to 4] g, Operation F-2, Second embodiment [Figure 5] F-3 , Third embodiment [Figs. 6 and 7] F-4. Fourth
Embodiment [FIGS. 8 and 9] G0 Effects of the invention (A. Field of industrial application) The present invention relates to a novel lifting device. Specifically, it is suitable as a device for lifting and lowering automobile window glass, the overall size is small, the overall height can be made smaller than the lifting stroke of the object to be lifted and lowered, such as window glass, and the driving force of the drive unit is smaller than the lifting stroke of the object to be lifted and lowered, such as window glass. The purpose of this invention is to provide a new lifting device that has low loss during transmission and high drive efficiency.

(B. Summary of the Invention) The lifting device of the present invention connects a number of drive gears arranged at intervals along a guide rail with a number of transmission gears meshing with two adjacent drive gears. is connected to a movable bracket along the guide rail,
In addition, the sliding body guided by the guide rail meshes with the drive gear, thereby reducing the overall dimensions, making the overall height smaller than the lifting stroke of the object to be lifted and lowered, and further reducing the driving force. It has good transmission efficiency.

(C, Prior Art) [Figure 10] Conventionally, various types of elevating devices have been proposed and put into practical use.

FIG. 10 shows an example of a conventional cable-type lifting device applied as a lifting device for vehicle window glass, which is disclosed in Japanese Utility Model Publication No. 57-140580.

This elevating device has a guide rail a arranged to extend vertically inside a vehicle door (not shown) and a bracket b supported by the guide rail a so as to be movable up and down. The lower edge of the window glass C, which is an elevating member, is supported.

Further, one end of a first wire d and a second wire d2 extending vertically along the longitudinal direction of the guide rail a are connected to the bracket b, and the first wire d is connected to the guide rail. One arc-shaped guide groove g provided in the cable guide f provided at the upper end of the guide rail a is wound around the pulley e supported at the lower end of the guide rail a.
1, and is further inserted into a first flexible pipe h1 provided so as to communicate with one end of the guide groove g+. Further, the second wire d2 is passed along the other arc-shaped guide groove g2 provided in the cable guide f, and is connected to a second flexible vibe provided so as to communicate with one end of the guide groove 82. It is inserted into h2.

The other ends of the first and second flexible pipes hl and h2 are connected to the housing j of the operating section i, and the housing j
A reel 1 rotated by a handle k is disposed inside the reel L, and the reel L is equipped with the above-mentioned vibrators h,...
Wire d introduced into housing j from h2, %d2
The lead-in ends of each are wound in opposite directions.

In the above-described lifting device, when the handle k is rotated in the direction of arrow A in FIG. 10 in the direction opposite to the arrow B in FIG. 10, and the window glass C is lowered. Further, when the handle k is rotated in the direction opposite to the arrow A, the wire d2 is wound onto the reel l, and the wire d1 is paid out, thereby moving the bracket b in the direction of the arrow B along the guide rail a. Window glass C will be raised.

The vertical movement stroke of bracket b at this time,
That is, the effective stroke L in the vertical direction of the window glass C
is the distance between the upper peripheral surface of pulley e and the lower end surface of cable guide f minus the height dimension of bracket b.

(D. Problem to be Solved by the Invention) By the way, in the above-mentioned conventional lifting device, the cable guide f provided at the upper and lower ends of the guide rail a and the wire dlbd, which is passed through the pulley e, are connected to the bracket b. Since the vertical movement stroke of bracket b is regulated by the presence of pulley e and cable guide f, its effective stroke L is determined from the distance between pulley e and cable guide f. It cannot be greater than the height dimension of b.

Therefore, in order to increase the effective stroke L, it is possible to increase the length of the guide rail a, or to move the mounting positions of the pulley e and cable guide f downward or upward compared to the case shown in Fig. 10. However, the interior space of a vehicle door is very narrow and limited, although it varies somewhat depending on the type and size of the door, and it is necessary to secure a space in which the window glass can be raised and lowered without interfering with other parts. Therefore, it is extremely difficult to lengthen the guide rail a or move the mounting positions of the pulley e and cable guide f, and a major design change of the door itself is required.

Also, if the radius of the arc-shaped guide grooves g1 and gx of the cable guide f is made smaller, the height of the cable guide f will be lowered, so the mounting position of the cable guide f relative to the upper end of the guide rail a should be moved upward 8 times. , and the effective stroke L can be increased. However, when the radius of the guide groove gI%g2 is made smaller, the bending ratio of the wire di%d2 guided thereby becomes larger, and the sliding of the wire d,%d becomes worse, resulting in poor operation feeling. With wires d,,d.

There is a problem in that the bending fatigue increases and the durability performance decreases. Therefore, the radius of the guide groove g+%g2 cannot be made less than a certain value.

Therefore, with the above-mentioned conventional elevating device, it is not possible to expect an increase in the movement stroke of the bracket, and thus the member to be lifted and lowered, and when applied to the elevating device for vehicle window glass, the ratio of the window to the height dimension of the door cannot be expected to increase. In other words, even when the top edge of the window glass reaches the rising end, which is the position where the window of the door is completely closed, the area of the hidden part that remains inside the door becomes larger than necessary, and the door becomes larger than necessary. There has been a problem in that the ratio of the window glass to the size of the window becomes large, making the cost of the window glass high.

In addition, the overall size is large, and in order to install it, it is necessary to provide a large insertion hole in the side of the door, which causes problems such as weakening the strength of the door.

Furthermore, since the wires d+ and d2 are moved up and down by pulling one end thereof, the wires d+ and d2
There is also the problem that the sliding resistance against each guide member inevitably becomes large, and the driving force transmission efficiency is not good.

(E. Means for Solving the Problems) In order to solve the above-mentioned problems, the lifting device of the present invention has the following features:
A large number of drive gears are arranged at appropriate intervals along the longitudinal direction of the guide rail, and each drive gear is connected by a large number of transmission gears that mesh with two adjacent drive gears, and this gear group is arranged at appropriate intervals. The sliding body is rotatably driven by a drive unit, and a sliding body that is guided by a guide rail and meshes with the drive gear is integrally formed with a bracket that supports the body to be lifted and lowered.

Therefore, according to the lifting device of the present invention, even a part of the sliding body can move upward or downward as long as it is engaged with the drive gear, so the overall length of the device can be made smaller than the lifting stroke of the lifted or lowered object. can do. In addition, since the overall size of the device is smaller, for example, when this is applied to a device for lifting and lowering automobile window glass, the insertion hole formed in the door can be made smaller. Strength can be increased. Furthermore, since the driving force is transmitted through the meshing of gears, the efficiency of driving force transmission is improved, so the drive unit can also be small, and from this point of view, the entire device can be made smaller and lighter. can.

(F. Example) Hereinafter, the elevating device of the present invention will be described in detail according to a second example illustrated in the drawings. In the illustrated embodiment, the present invention is applied as a device for lifting and lowering window glass for automobiles.

(F-1, First Embodiment) [Figures 1 to 4] Figures 1 to 4 show a first embodiment in which the present invention is applied to an automobile window glass lifting device. be.

(a, Overview) [Fig. 2] The window glass lifting device 1 is installed inside the vehicle interior door body 2, as shown in Fig. 2. This window glass lifting device 1
is a guide rail arranged inside the door body 2 degrees so as to extend in the vertical direction, a gear group consisting of a plurality of gears arranged along the longitudinal direction of this guide rail, a DC motor, and a forward and reverse rotation driven by this. a drive unit comprising a timing pulley attached to the drive unit; a bracket slidably supported by the guide rail and having a slide rack; a driven timing pulley coaxially provided with one gear in the gear group; and the timing pulley. and a timing belt wound between.

(b. Guide rail) [Figs. 1 to 4] Reference numeral 3 indicates a guide rail, and the guide rail 3 extends in the vertical direction and has a substantially channel-like cross-sectional shape. The guide rail 3 is formed by plastically deforming a metal plate. The opening edges of both side walls constituting the channel shape of the guide rail 3 are bent so as to protrude outward, thereby extending the sliding contact portion 4 along the longitudinal direction of the guide rail 3.
4 is formed, and a slide rack, which will be described later, is slid along this sliding contact portion 4.4.

(c, driving section) [Figures 1 and 2] 5 is a driving section. The drive unit 5 includes a DC motor 6, a reduction mechanism 7, a rotation direction switching mechanism 8, and an output shaft 7a of the reduction mechanism 7.
The timing pulley 9 is fixed to the timing pulley 9.

(d, Bracket) [Figures 1 and 2] 10 is a bracket, which is made of, for example, synthetic resin. The bracket 10 has a substantially rectangular plate shape, and a slide rack, which will be described later, is integrally formed near one end of the back surface of the bracket 10.

In order to prevent the bracket 10 from falling off the guide rail 3, engagement grooves 10a110a formed on both sides are slidably engaged with a sliding contact portion 4.4 provided on the guide rail 3.

11.11 are mounting holes formed near both ends of the bracket 10 in the longitudinal direction;
11 to attach the vehicle window glass 12 by screwing or the like.

(e, Slide Rack) [Figures 1 to 4] 13 is a slide rack. The slide rack 13 integrally projects downward from a position near one end of the back surface of the bracket 10 in the longitudinal direction. This slide rack 13 is positioned between one wall 3a of the guide rail 3 and a gear group to be described later, and the side surface of the slide rack 13 on the gear side has rack teeth 14.
14, . . . are arranged in the vertical direction.

(f, gear group) [Figures 1 to 4] 16 is a gear group consisting of a large number of drive gears and transmission gears.

17.17,... are drive gears, and guide rail 3
They are arranged in a line along the longitudinal direction at appropriate intervals.

18. 18, . . . are transmission gears, and the drive gear 1
F, 17, . . . are formed to have a slightly smaller diameter. These transmission gears 18.18, . . . are the #AwJ gear 17.
17, . . . and meshed with two adjacent drive gears.

A suitable gear 17a among the drive gears 17, 17, .
A rotating shaft 19 is fixed to the rotating shaft 19, a driven timing pulley 20 is fixed to the rotating shaft 19, and a timing belt 21 is stretched between the driven timing pulley 20 and the driving timing pulley 9.

(g, operation) Automotive window glass lifting device 1 configured as above
In yA! When the DC motor 6 of the 11 section 5 is rotated in the normal rotation direction, the timing belt 21 is rotated in the first direction.
The drive gear 1a of the gear group 16 is rotated in the direction shown by arrow B in the figure. The transmission gears 18.18 adjacent to this drive gear 17a are then rotated, and each transmission gear 18.18 in turn connects to the adjacent drive gear 17.18.
17, the drive gear 17.17 causes the adjacent transmission gear 18.18 to rotate, and so on, the adjacent gears 17.17→18.18→17.1
The rotation is transmitted to 7,... In this way,
All gears 17.17, . . . , 18.18, . . . are rotated. At this time, slide rack 13
The drive gear 1 is in exactly meshing engagement with the rack teeth 14.
7. The slide rack 13 is moved upward by the rotation in step 17, and the window glass 12 fixed to the bracket 10 formed integrally with the slide rack 13 is raised while being guided by a window frame (not shown). Become. Then, when the window glass 12 reaches the rising end and the window 2a of the door body 2 is completely closed, the DC motor 6 stops.

Further, when the DC motor 6 of the drive section 5 rotates in the reverse direction, the timing pulley 9 rotates in the direction opposite to the direction indicated by arrow A in FIG.
1, the transmission gear 18.18 adjacent thereto is also rotated in a direction opposite to the direction indicated by arrow B. At that point, the slide rack 13
The power is transmitted to the drive gears 17.17, . . . which are in mesh with the drive gear 1
The slide rack 13 is rotated in a direction corresponding to the rotation in the direction opposite to the direction indicated by the arrow B of 7a, and therefore the slide rack 13 is lowered, thereby lowering the window glass 12.

According to this elevating device 1, the bracket for the ratio of the door dimension! The amount of 8rJJJ in the vertical direction of 0 is increased, and therefore, the effective stroke of the bracket 10 can be increased. That is, the window glass support bracket 1
The effective stroke L+ of 0 is the length of the arrangement of gear n1B, which is set at the interval between drive gears 1 and 17 at the top and bottom ends, and the length of the slide rack 13 in the vertical direction. Adding the magnified movement amount As and Jlz, 11
The stroke length is equivalent to 1 + JL2.

Therefore, even when using the window glass 12 of the same size as the conventional one, the stroke length JZI increases the ratio of the height h of the window 2a to the height H of the door body 2, as shown in FIG.
It can be increased by +J22.

Conversely, if the height of the window 2a is the same, the height of the window glass 12 will be shortened by the increased stroke, that is, by the AI+fL2 dimension, or the cost of the window glass will be reduced. can be achieved.

Furthermore, since the means for raising and lowering the window glass 12 is constituted by the gear group 16, it is possible to provide a device with fewer failures and high durability.

Furthermore, with the timing belt 20 tensioned, the drive unit 5 can be placed at any position around the rotating shaft 19.

Furthermore, the gears to which power is transmitted from the drive unit 5 are not limited to the aforementioned gear 17a, but any of the gears 17, 17, 17, 18, 18, . . . that constitute the gear group 16. Therefore, it is possible to easily accommodate changes in the shape and size of the installation space at the installation location.

(F-2, Second Embodiment) [FIG. 5] FIG. 5 shows a second embodiment IA of the lifting device of the present invention.

This second embodiment IA is different from the first embodiment 1 only in the power transmission system from the DC motor 6 to the power transmission gear 17a, and other parts are different from the first embodiment 1. Since they are the same, the same parts are given the same reference numerals as those used in the first embodiment, and the description thereof will be omitted.

That is, in this embodiment, as a transmission means for transmitting the rotational force of the drive unit 5 to the gear group 16, a large number of relay gears 22, 22, . They are arranged along the longitudinal direction, and thereby the transmission force of the drive section 5 is transmitted to the power transmission gear 17a of the gear group 16. Incidentally, the mounting bracket 23 can be rotated about 19 in rotation.

In the second embodiment IA, in addition to obtaining the same effects as in the first embodiment 1, a degree of freedom in design can be obtained and durability can be improved compared to the belt transmission method. can.

(F-3, Third Embodiment) [Figs. 6 and 7] Figs. 6 and 7 show a third embodiment IB of the lifting device of the present invention.

Similar to the second embodiment IA, the third embodiment IB differs from the first embodiment 1 only in the power transmission system from the DC motor 6 to the power transmission gear 17a. Since the other parts are the same as those in the first embodiment, the same parts are given the same reference numerals as those used in the first embodiment and the explanation thereof will be omitted.

In this embodiment IB, a bevel gear 24 is fixed to the rotating shaft 19 of the power transmission gear 17a of the gear group 16, and a bevel gear 25 is further fixed to the output shaft 7a of the reduction mechanism 7 of the drive section 5.
are fixed, and the two bevel gears 24.25 are connected by a rotation transmission means consisting of a rotation transmission shaft 26 and bevel gears 27.28 fixed to both ends of the shaft and meshing with each bevel gear 24.25.

Therefore, in this third embodiment IB, in addition to obtaining the same effects as the second embodiment, it is also possible to obtain the effect that the rotation transmission means can be simplified.

(F-4, Fourth Embodiment) [Figs. 8 and 9] Figs. 8 and 9 show a fourth embodiment IC of the lifting device of the present invention.

Similar to the second and third embodiments IA and IB, the IC of this fourth embodiment differs from the first embodiment 1 in that The only difference is the power transmission system, and other parts are the same as in the first embodiment, so similar parts are given the same symbols as used in the first embodiment. The explanation will be omitted.

That is, in this fourth embodiment, the outer casing 29 of the reducer groove 7 of the drive section 5 is fixed to the back surface of the guide rail 3, and the power transmission gear 17a is fixed to the output shaft 7a.

However, in this fourth embodiment IC, the first
In addition to the same effects as in Example 1, the structure is simplified.

(G. Effects of the Invention) As is clear from the above description, the lifting device of the present invention includes a guide rail that extends downward on the road, a bracket that is movably provided along the guide rail, and A sliding body that is integrally or integrally formed with the bracket and moves while being guided by the guide rail; a large number of drive gears arranged at appropriate intervals along the longitudinal direction of the guide rail; A large number of transmission gears that mesh with two adjacent ones, and a drive section that drives at least one of the drive gear or the transmission gear, the drive gear meshing with the sliding body. It is characterized by

Therefore, according to the lifting device of the present invention, even a part of the sliding body can move upward or downward as long as it is engaged with the drive gear, so the overall length of the device can be made smaller than the lifting stroke of the lifted or lowered object. can do. In addition, since the overall size of the device is smaller, when this is applied, for example, to a device for lifting and lowering window glass for self-help vehicles, the insertion hole formed in the door can be made smaller, compared to conventional doors. The strength of can be increased. Furthermore, since the driving force is transmitted through the meshing of gears, the efficiency of driving force transmission is improved, so the drive unit can also be small, and from this point of view as well, the overall size of the device can be reduced. .

4. Brief explanation of the drawings Figures 1 to 4 show the first embodiment of the lifting device of the present invention. 3 is an enlarged sectional view taken along line III-III in FIG. 1,
FIG. 4 is an enlarged sectional view taken along the line IV-IV in FIG. 1, and FIG. 5 shows a second embodiment of the lifting device of the present invention, showing main parts that are different from the first embodiment. The front view, FIG. 6, and FIG. 7 show a third embodiment of the lifting device of the present invention, and FIG. 6 is a front view corresponding to FIG. 5, and FIG. 7 is a front view corresponding to FIG.
8 and 9 show the fourth embodiment of the lifting device of the present invention, FIG. 8 is a front view of the main part, and FIG. FIG. 10 is an enlarged sectional view taken along line IX and a front view showing the entire conventional lifting device.

Explanation of symbols 1... Lifting device, 3... Guide rail, 5...
Drive unit, 10... Bracket, 13... Sliding body, 17... Drive gear, 18... Transmission gear,
IA...lifting device, IB...lifting device, IC・
...Elevating device front view enlarged sectional view (m-IILm) Fig. 3 TX) Figure 9 Front view (Conventional example) Figure 10

Claims (1)

[Scope of Claims] A guide rail that extends downward on the road, a bracket that is movably provided along the guide rail, and a slide that is integrally or integrally formed with the bracket and moves while being guided by the guide rail. a moving body; a large number of drive gears arranged at appropriate intervals along the longitudinal direction of the guide rail; a large number of transmission gears that mesh with two adjacent drive gears; and the drive gear or A lifting device comprising: a drive section that drives at least one of the transmission gears, the drive gear meshing with the sliding body.