JPS622063A - Lift device - Google Patents

Abstract

PURPOSE:To increase length of a moving stroke, by enabling a bracket to be moved exceeding upper and lower ends of the effective stroke of a running structure, in the case of a lift device for a vehicle glass window or the like. CONSTITUTION:A device provides a bracket 21 movable along the lengthwise direction of a guide rail 3 further for supporting a lifted material 26. While the device provides a slide rack 27 formed as an integral unit in or in a manner of integral shape with the bracket 21. Further the device provides a running structure 29, being movably arranged running in the same direction to the moving direction of the slide rack 27 further providing at least in one part an engaging part disconnectably engaged with the slide rack 27, on the guide rail 3. By this constitution, an effective stroke of the bracket 21 can be increased.

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 B9 Summary of the invention C0 Prior art [Figure 10] D3 Problems to be solved by the invention E9 Means for solving the problems F. Example F-1., First implementation Examples [Fig. 1 to 5] a. Overview [Fig. 2] b. Guide rail [Fig. 1 to 5] C8 drive unit [Fig. 1] δ. Bracket [Fig. 1 to 5] j e8 slide rack [Figures 1 to 5] f, Traveling body [Figures 1 to 5] g, Operation F-2, Second embodiment [Figure 6] F-3, Third Example [Fig. 7, Fig. 8] F-4, 4th
Embodiment [FIG. 9] Effects of the G0 invention (A, industrial application field) The present invention relates to a novel lifting device. Specifically, the present invention aims to provide a novel lifting device which is suitable as a lifting device for vehicle window glass and can increase the ratio of the window to the height of the vehicle door, especially the height. be.

(B. Summary of the Invention) The lifting device of the present invention is such that the movement stroke of a bracket for supporting a member to be lifted and lowered that is arranged to be movable up and down is larger than the effective stroke of a traveling body that lifts and lowers the bracket. be.

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

FIG. 1O shows an example of a conventional cable-type elevating device applied as an elevating device for vehicle window glass, which is disclosed in Japanese Utility Model Application Publication No. 57-140580.

This elevating device has a guide rail a disposed 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 ends of a first wire d1 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 d1 is connected to the guide rail a. After being wrapped around the pulley e supported at the lower end, one arc-shaped guide groove g provided in the cable guide f provided at the upper end of the guide rail a
1, and is further inserted into a first flexible pipe hi provided so as to communicate with one end of the guide groove g1. Further, the second wire d2 is passed along the other arc-shaped guide groove g2 provided in the cable guide f, and is passed through a second flexible pipe provided so as to communicate with one end of the guide groove g2. It is inserted into h2.

The other ends of the first and second flexible pipes h1 and h2 are connected to the housing j of the operating section i, and the housing j
A reel t rotated by a handle k is disposed inside the reel 1, and the reel 1 has the pipes h1,
Wires dl and d2 introduced into the housing j from h2
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 the 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 t, and the wire d1 is paid out, thereby moving the bracket b in the direction of the arrow B along the guide rail a. , the window glass C will be raised. At this time, the vertical movement stroke of the bracket b, that is, the effective stroke L in the vertical direction of the window glass C is calculated from the distance between the upper peripheral surface of the pulley e and the lower end surface of the cable guide f.
minus the height dimension.

(D. Problems to be Solved by the Invention) By the way, in the above-mentioned conventional lifting device, the wire di is passed through the cable guide f and the pulley e provided at the upper and lower ends of the guide rail a.

Since d2 is directly connected to bracket b, the vertical movement stroke of bracket b is
The effective stroke L cannot be greater than the distance between the pulley e and the cable guide f minus the height of the bracket 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 extremely narrow and limited, although it varies somewhat depending on the type and size of the door, and there must be enough space to allow the window glass to go up and down without interfering with other parts. Therefore, the length of the guide rail a is increased,
Alternatively, it is extremely difficult to move the mounting positions of the pulley e and the cable guide f, and a major design change of the door itself is required.

Furthermore, if the radius of the arcuate guide grooves g1 and g2 of the cable guide f is reduced, the height of the cable guide f will be lowered, making it possible to move the mounting position of the cable guide f relative to the upper end of the guide rail a upward. Therefore, the effective stroke L can be increased. However, when the radius of the guide grooves g1 and g2 is made small, the bending ratio of the wires d1 and d2 guided thereby becomes large, and the sliding of the wires d1 and d2 becomes poor, resulting in poor operation feeling. There is a problem in that the bending fatigue of the wires d1 and d2 increases and the durability performance deteriorates. Therefore, the radius of the guide grooves g1 and 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.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned conventional problems, and it is an object of the present invention to provide a novel lifting device that allows a larger movement stroke of a bracket for supporting a member to be lifted and lowered. The purpose is to

(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 guide rail that extends in the vertical direction; a bracket that is movable along the longitudinal direction of the guide rail and supports a member to be lifted and lowered; a slide rack that is integrated with or integrated with the bracket; and a slide rack that is mounted on the guide rail. A traveling body disposed so as to be able to run in the same direction as the moving direction of the rack and having an engaging portion that removably engages with the slide rack at least in part, and a drive device that drives the traveling body. It is what it is.

Therefore, according to the present invention, the bracket can be moved beyond the upper and lower ends of the effective stroke of the traveling body, and the effective stroke can be increased to increase the movement stroke of the member to be lifted and lowered.

(F. Example) Below, details of the lifting device of the present invention will be explained in detail according to the illustrated example. In the illustrated embodiment, the present invention is applied as a device for lifting and lowering a window glass for a vehicle.

(F-1, First Embodiment) [Figs. 1 to 5] Figs. 1 to 5 show a first embodiment of the lifting device of the present invention.

(a, overview) [Figure 2] The window glass lifting device 1 is connected to the vehicle interior door body 2 as shown in Figure 2.
is installed inside. This window glass lifting device 1 is
A channel-shaped guide rail disposed inside the door body 2 so as to extend in the vertical direction, an upper pulley and a lower pulley rotatably supported at the upper and lower parts of the guide rail, a DC gear motor, and the like. a drive device consisting of a reel rotatably provided in the casing and rotated in forward and reverse directions; a bracket slidably supported by the guide rail and having a slide rack; and a reel wound around the reel and pulley. and a running body that runs vertically within the guide rail and has a retaining portion that removably engages with the slide rack.

(b. Guide rail) [Figures 1 to 5] Reference numeral 3 indicates a guide rail, and the guide rail 3 extends in the vertical direction and has a substantially channel-shaped cross section.

An internal wall 4 is formed at a position near one side wall 3a of the guide rail 3 and extends parallel to the side wall 3a at a predetermined distance, and a guide groove 5 is formed between the internal wall 4 and the one side wall 3a. It is formed. Furthermore, cutouts 6 and 7 are formed near both the upper and lower ends of the inner wall 4.

Pulleys 8 and 9 are rotatably supported at locations corresponding to the notches 6.7, and a portion of these pulleys 8.9 protrudes into the guide groove 5 through the notches 6.7. It is being

Reference numeral 10 designates a connecting pipe that projects outward and obliquely downward at a location corresponding to the upper pulley 8 on the other side wall 3b of the guide rail, and 11 represents a connecting pipe slightly below the portion where the connecting pipe 10 is formed. This is another connecting pipe that protrudes outward and diagonally downward from this position. Note that the internal passage 11a of the connecting pipe 11 and the inner surface of the other side wall 3b of the guide rail 3 are connected by a curved guide surface 12.

(c, driving section) [Fig. 1] 13 is a driving section. A reel 15 is rotatably supported within the casing 14 of the drive unit 13, and
The reel 15 is rotated by a direct current motor 16 via a transmission mechanism (not shown).

17 and 18 are connection pipes protruding from the casing.

The drive unit 13 is fixed within the door body 2 by a mounting means (not shown).

Reference numerals 19 and 20 designate flexible pipes made of flexible material, each of which has one end connected to the connecting pipe 10.11 formed on the guide rail 3, and the other end formed on the drive section 13. The connecting pipes 17 and 18 are connected to the connecting pipes 17 and 18 of the drive unit, and thereby the inside of the casing 14 of the drive part, the flexible pipe 19 on one side, the connecting pipe 10 on the other hand, the inside of the guide rail 3, the connecting pipe 11 on the other hand, the flexible pipe 20 on the other hand ,
A closed space inside the casing 14 of the drive unit 13 is created.

(d, Bracket) [Figures 1 to 5] 21 is a bracket made of synthetic resin. The bracket 21 includes a substantially rectangular plate-shaped main part 21a and two leg parts 22.2 that are integrally formed on the back surface of the main part 21a and extend parallel to each other.
Engagement grooves 24.24 extending in the length direction are formed in the zero leg portions 22.23 consisting of
4 and 24 are engaged with the side walls 3a and 3b of the guide rail 3, respectively, so that the bracket 21 is guided by the guide rail 3 and moved in the vertical direction. In order to prevent the plug 2 21 from falling off the guide rail 3, an appropriate sliding engagement means (not shown) is provided.

Mounting holes 25.25 are formed near both ends of the main portion 21a, and the vehicle window glass 26 is mounted using screws or the like using the mounting holes 25.25.

(e, Slide Rack) [Figures 1 to 5] 27 is a slide rack. The slide latch 27 integrally projects downward from the lower end of one leg 22 of the bracket 21. The width of the slide rack 27 is slightly smaller than the width of the guide groove 5 of the guide rail 3, so that an appropriate gap is formed between the slide rack 27 and the inner wall 4 of the guide rail 3. Rack teeth 28.2 are provided on the surface of the slide rack 27 facing the inner wall 4.
8. ... are arranged in parallel along the vertical direction.

(f, Running body) [Figures 1 to $5] 29 is a wire as a running body. The wire 29 is wound several times around the reel 15 of the drive unit 13 and then passed through one of the connecting pipes 17, one of the flexible vibes 19, and one of the connecting pipes 10 of the guide rail 3, and reaches the inside of the guide rail 3. There, it is wrapped around the upper pulley 8 for about one-third of a turn, then enters the guide groove 5 through the upper notch 6, exits from the lower notch 7, and is wound around the lower pulley 9 for about half a turn to guide the guide. After being placed along the surface 12, the other connecting pipe 11
, the other flexible pipe 20 , and the other connecting pipe 18 of the drive section 13 to reach the reel 15 .

Reference numeral 30 denotes a drive rack made of a flexible material, and is formed to a thickness that can fit between the slide rack 27 and the inner wall 4 in the guide groove 5 of the guide rail 3, and the drive rack is made of a flexible material. Rack teeth 31, 31, . . . that mesh with rack teeth 28, 28, . . . of the slide rack 27 are formed on the surface facing the rack 27. The drive rack 30 thus formed is fixed to the wire 29 in a state where it meshes with the slide rack 27.

(g, Operation) In the vehicle window glass lifting device 1 configured as described above, the DC motor 16 of the drive device 13 is started in the forward rotation direction, thereby rotating the reel 15 in the direction of arrow A in FIG. When the wire 29 is pulled up, the part of the wire 29 on the upper pulley 8 side is wound onto the reel 15, and at the same time the part on the lower pulley 9 side is unwound, and the wire 29 on the pulley 8.9 side is unwound.
The portion in between is made to run in the direction of arrow B in FIG. Therefore, since the drive rack 30 fixed to the wire 29 also moves in the same direction, the slide rack 27 meshing with it is moved in the direction of arrow B within the guide groove 5. Accordingly, the window glass 26 coupled to the slide rack 27 via the bracket 21 is raised while being guided by a window frame (not shown). When the window glass 26 reaches the rising end and the window 2a of the door body 2 is completely closed, the motor 16 stops and the drive rack 30 is connected to the wire 29 as shown in FIG. The upper pulley 8 is curved along the outer periphery of the upper pulley 8, and a portion of the upper pulley 8 is branched off from the slide rack 27. At the same time, the upper end portion of the slide rack 27, which is disengaged from the drive rack 30, moves upward within the guide groove 5 beyond the upper boob 98.

Therefore, the bracket 2 supporting the lower edge of the window glass 26
1 is moved above the upper pulley 8.

Furthermore, if the DC motor 16 of the drive device 13 is started in the reverse direction and the reel 15 is rotated in the direction opposite to arrow A in FIG.
At the same time as the wire 29 is wound around the upper pulley 8, the portion of the wire 29 that is located between the pulleys 8 and 9 is wound back, causing the portion of the wire 29 that is located between the pulleys 8 and 9 to run in the direction opposite to the arrow B in FIG. As a result, the drive rack 30 in the state shown in FIG. 4 lowers the slide rack 27 as the wire 29 runs and engages with the slide rack 27 as a whole again, thereby lowering the bracket 21 and therefore the window glass 26. When the window glass 26 reaches the lower end where it is completely housed in the door body 2, the motor 16 stops and the drive gear 30 is connected to the lower pulley integrally with the wire 29, as shown in FIG. At the same time, the lower end portion of the slide rack 27, which is disengaged from the drive rack 30, is moved downward in the guide groove 5 past the position of the lower boot 99, and the bracket 21 is lowered to a position where it partially overlaps the lower pulley 9.

Therefore, the effective stroke L1 of the bracket 21 is equal to the effective stroke L of the wire 29, which is set by the distance between the upper and lower pulleys 8.9 minus the height of the bracket 21, and the length of the slide rack 27. L+1, which is the sum of the corresponding enlarged movement amounts t1 and t2 in the vertical direction
The stroke length corresponds to 1+12.

As a result, even when using a window glass of the same size as before, the ratio of the height of the window 2a to the height dimension H of the door body 2 is increased by the increased stroke length tl +
It can be increased by t2. Also, conversely, window 2a
If the height of the window glass 26 is made the same as that of the conventional one, the height dimension of the window glass 26 can be shortened by Ll+12 dimensions, and the cost of the window glass can be reduced. Furthermore, since there is no need to reduce the size of the pulley, bending fatigue of the wire is eliminated and the durability of the wire is improved.

(F-2, Second Embodiment) [Fig. 6] Fig. 6 shows a second embodiment of the lifting device of the present invention.

In this embodiment, the lower end 5a of the guide groove 5 provided in the guide rail 3 is bent toward the lower pulley 9, and the slide rack 27 that engages with the drive rack 30 is formed of a flexible member, and the bracket 21 reaches the lower end, the flexible slide rack 27 is curved along the curved lower end 5a of the guide groove 5.

By doing so, the amount of movement L2 of the bracket 21 in the downward direction can be further increased than in the first embodiment, and the effective stroke LL of the bracket 21 can be further increased. play.

(F-3, Third Embodiment) [Figures 7 and 8] Figures 7 and 8 show a third embodiment of the lifting device of the present invention.

In this embodiment, timing pulleys 32 and 33 are rotatably supported at the upper and lower parts of the guide rail 3, and in addition,
Between the lower timing pulleys 32 and 33, continuous teeth 34
A, 34a, . . . and 34b, 34b, .

A timing belt 37 is fitted between a driven timing pulley 35 provided coaxially with the timing pulley 32 and a driving timing pulley 36 rotated by the DC motor 16.
is wound around the timing belt 37, and the rotation of the DC motor 16 is transmitted to the lifting timing belt 34 via the timing belt 37.
By running this, the window glass 26 is raised or lowered via the slide rack 27 and the bracket 21.

In this embodiment, in addition to obtaining the same effects as in the first embodiment, since the drive section 38 including the DC motor 16 can rotate in the direction of the arrow with the timing pulley 32 as a fulcrum, The mounting position of the drive unit 38 can be changed arbitrarily, and there is a degree of freedom in design.

(F-4, Fourth Embodiment) [FIG. 9] FIG. 9 shows a fourth embodiment of the lifting device of the present invention.

In this embodiment, similarly to the third embodiment, the traveling body for raising and lowering the member to be lifted and lowered is constituted by a timing belt 34 wound between timing pulleys 32 and 33 supported at the upper and lower parts of the guide rail 3. Then, the DC motor 16 of the drive section 38 and the timing belt 34 are connected by a gear train 40 consisting of a plurality of gears 39, 39, . This is what I did.

In this embodiment, the same effects as the first embodiment are obtained, and the degree of freedom in design is further improved than in the third embodiment, and the durability of the rotation transmission function is improved. It has the effect of being able to

Note that the running body for raising and lowering the bracket along the guide rail is not limited to wires or timing belts, but it goes without saying that a roller chain or the like may be used.

(G. Effects of the Invention) As is clear from the above description, the lifting device of the present invention includes a guide rail extending downward on the road and a member to be lifted and lowered that is supported movably in the longitudinal direction of the guide rail. a bracket for supporting; a slide rack integrally formed with the bracket; and a slide rack disposed on the guide rail so as to be movable in the same direction as the slide rack; The present invention is characterized by comprising a traveling body having an engaging portion that detachably engages with the rack, and a drive device that drives the traveling body.

Therefore, the effective stroke of the bracket can be significantly increased compared to the effective stroke length of the traveling body disposed along the longitudinal direction of the guide rail.

[Brief explanation of the drawing]

Figures 1 to 5 show a first embodiment of the lifting device of the present invention, with Figure 1 being an overall front view and Figure 2 showing the lifting device installed inside the door of a vehicle. The overall front view, Figure 3 is a sectional view taken along the line ■-■ in Figure 1, Figures 4 and 5 are the engaging portions when the member to be lifted and lowered reaches the ascending end and descending end, respectively. FIG. 3 is a front view of main parts showing the relationship with the slide rack. FIG. 6 is a front view corresponding to FIG. 5 showing a second embodiment of the lifting device of the present invention, and FIGS. 7 and 8 show a third embodiment of the lifting device of the present invention. The figure is a front view of the whole, 8
Figure 8 is a sectional view taken along the line ■-■, Figure 9 is an overall front view showing the fourth embodiment of the lifting device of the present invention, and Figure 10 is a front view showing the entire conventional lifting device. be. Explanation of symbols 1. Raising/lowering device, 311...Guide rail, 13
-... Drive device, 21... Bracket, 26... Lifted/lowered member, 27... Slide rack, 29... Traveling body (wire), 30... Engaging portion (flexible Rack), 34φ-
One engaging part (timing belt). 38... Drive device IL East example No. 10rXi

Claims (3)

[Claims] (1) A guide rail that extends in the downward direction of the road, a bracket for supporting a member to be lifted and lowered that is movably supported in the longitudinal direction of the guide rail, and a slide rack that is integrally or integrally formed with the bracket. , a traveling body disposed on the guide rail so as to be able to travel in the same direction as the moving direction of the slide rack, and having an engaging portion that removably engages with the slide rack at least in part; A lifting device characterized by comprising a drive device for driving a (2) The elevating device according to claim 1, wherein the traveling body comprises a wire that is run by a drive device and a flexible rack that is integrally provided with the wire. (3) The lifting device according to claim 1, wherein the traveling body is composed of a timing belt having continuous teeth formed on both the inside and outside surfaces.