JPH082377Y2 - lift device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The lifting device of the present invention will be described in detail according to the following items.

A. Industrial fields of use B. Overview of the device C. Prior art [Fig. 9] D. Problem to be solved by the device [Fig. 9] E. Means for solving the problem F. Example [Chapter 1 to 8] a. Support plate b. Guide rail c. Drive roller, drive section d. Drive wire e. Bracket f. Operation G. Effect of device (A. Industrial application field) This device is new Lifting device. More specifically, it is an object of the present invention to provide a novel lifting device that simplifies the shape of a guide rail that guides lifting and lowering of a bracket that supports a member to be lifted and reduces rattling of the bracket with respect to the guide rail.

(B. Outline of the Invention) The lifting device of the present invention has a guide rail having two U-shaped cross-sections and two engaging pieces protruding toward the opening edges of the U-shape. In order to reduce the cost by making the shape of the guide rail extremely simple, the bracket is provided with three sliding pieces, one of which is one end of the base piece of the guide rail, one side piece and Slidingly engages with the engaging piece on one side to eliminate rattling of the bracket in the front-rear direction and the left-right direction with respect to the guide rail, and the other sliding piece to the engaging piece on the other side. Slidingly engaged and vertically separated from each other by setting one of the one and the other sliding pieces to one and leaving the other to two to suppress vertical rotation and horizontal rotation. You can

(C. Prior art) [Fig. 9] Fig. 9 shows the guide mechanism of the bracket that supports the window glass, which is the member to be lifted, in the conventional lifting device used for lifting the window glass of a sedan type automobile. There is something like the one shown.

In FIG. 9, a is a guide rail formed of sheet metal, and is provided with an L-shaped engaging piece c protruding forward from one side edge of the base piece b, and other than the engaging piece c. Two engaging pieces d and e are juxtaposed to the front side by side by side at a position closer to the side.

Reference numeral f is a bracket for supporting a window glass (not shown), which is made of sheet metal and is made of synthetic resin.
Is fixed by outsert molding.

A sliding groove i is formed on the surface of one sliding piece g facing the other sliding piece h, and the tip of the L-shaped engagement piece c is formed in the sliding groove i. It is slidably engaged.
Two sliding grooves j and k are formed on the surface of the other sliding piece h facing the guide rail a, and the engaging pieces d and e of the guide rail a are respectively formed in these sliding grooves j and k. Separately, it is slidably engaged.

Then, by the drive mechanism (not shown), the bracket f
When the bracket f receives an upward or downward moving force, the bracket f is guided by the guide rail a and is raised or lowered.

(D. Problem to be Solved by the Invention) [FIG. 9] However, in the above-described conventional lifting device, there is a problem that the shape of the guide rail a is complicated and the cost is high. Also, the bracket f for the guide rail
There is a problem that the rattling of can not be removed sufficiently. That is, since there is nothing that restricts the movement of the bracket f away from the guide rail a on the sliding piece h side, the bracket f is based on the engaging portion between the sliding groove i and the engaging piece c. As a result, there is a problem in that there is rattling that rotates in the horizontal direction, and there is also a problem that rattling occurs due to turning in the vertical direction.

(E. Means for Solving the Problems) In order to solve the above problems, the lifting device of the present invention is
The guide rail has a substantially U-shaped cross section, and two engaging pieces that project toward each other are formed at the opening edge of the U-shape. Three sliding pieces are provided on the bracket, and one of them is used as a guide. Slidingly engages one side end of the rail base piece, one side piece, and one side engagement piece, and the other sliding piece can slide on the other side engagement piece of the guide rail. And one of the one and the other sliding piece is one and the other is two, which are vertically separated.

Therefore, in the elevating device of the present invention, the guide rail has a substantially U-shaped cross section, so that the shape of the guide rail is simple and the cost of the guide rail can be reduced. Further, the one sliding piece and the guide rail are engaged with each other to eliminate the rattling of the bracket with respect to the guide rail in the front-rear direction and the left-right direction, and the engagement of the other sliding piece and the guide rail allows the one sliding piece to be slid. Rotation of the bracket in the left-right direction with the piece as a base point also causes one of the above-mentioned sliding piece and the other sliding piece to be one, and the other to be two.
By vertically separating the brackets from each other, the bracket can be restrained from rotating in the vertical direction, and smooth operation without rattling can be expected.

(F. Embodiment) [FIGS. 1 to 8] Hereinafter, details of the lifting device of the present invention will be described in accordance with a first embodiment. In the illustrated first embodiment, the present invention is applied to an elevating device for an automobile window glass.

(A. Support plate) 2 is a support plate, which is formed in a vertically long shape by a sheet metal. The support plate 2 is gently curved and has one surface 2a.
(Hereinafter, referred to as "front face".) A middle portion in the vertical direction projects, and the other face 2b (hereinafter referred to as "back face").
Has a hollow middle portion in the vertical direction.

Protrusions 3a and 3b protruding laterally are formed at one side edge of the upper and lower ends of the support plate 2, whereby the upper and lower ends of the support plate 2 are formed wider than the other portions.

4a and 4b are substantially protrusions 3 near one side of the upper and lower ends of the support plate 2.
The pulley is rotatably supported by support shafts 5 and 5 projecting from the boundary between a and 3b and other parts to the front surface 2a side, and grooves 6 and 6 are formed on its peripheral surface.

Reference numeral 7 denotes a mounting piece which is provided so as to project upward from the upper end of the support plate 2 and which is substantially L-shaped when viewed from the side and which projects slightly toward the rear surface 2b, and mounting bolts 8 and 8 are fixed to both end portions thereof. ing. Reference numeral 9 denotes a mounting member fixed to the rear surface 2b of the support plate 2 near the lower end, and a mounting bolt 10 is also fixed to the mounting member 9. Then, the support plate 2 has these mounting bolts 8,
It is attached to an automobile door structure (not shown) by 8 and 10.

(B. Guide rail) 11 is a guide rail, which is made of sheet metal. The guide rail 11 has a base piece 12 extending vertically in a strip shape.
And side pieces 13, 1 protruding in the front direction from both side edges of the base piece 12.
3'and engaging pieces 14, 14 'protruding toward each other from the edges of the side pieces 13, 13' on the side opposite to the base piece 12;
A wide slit 15 extending vertically is formed between 14 and 14 '. That is, the guide rail 11 includes the base piece 12 and the side piece 13,
13 'and the engaging pieces 14, 14' are formed so as to extend in the vertical direction and have a substantially U-shaped cross section opened at the slit 15. Further, stopper pieces 16, 16, ... Which protrude inward are integrally formed at the upper and lower ends of the side pieces 13, 13 '. The base piece 12 is gently curved along the front surface 2a of the support plate 2.

The base piece 12 of the guide rail 11 is the support plate 2
The front surface 2a is fixed to a portion along the other side edge by spot welding or the like.

(C. Driving roller, driving portion) 17 is a mounting member, which is fixed to a position closer to the lower end of the support plate 2 from the center of the back surface 2b and projects from one side edge of the supporting plate 2.

Reference numeral 18 denotes a drive roller rotatably supported on the front side of a portion of the mounting bracket 17 protruding from one side edge of the support plate 2. A spiral winding groove 19 is formed on the outer peripheral surface of the drive roller 18. Reference numeral 20 denotes a shaft of the driving roller 18, one end of which is fixed to the central portion of the driving roller 18 and the other end of which penetrates the fitting 17 in the thickness direction.

Reference numeral 21 denotes a drive unit, in which required elements are housed in a case 22 fixed to the back surface 2b of the support plate 2.

Reference numeral 23 is a DC motor, and a worm gear 24 is fixed to a rotary shaft 23a thereof, and a worm wheel 25 is meshed with the worm gear 24. The other end of the shaft 20 having the drive roller 18 fixed to one end thereof is fixed to the center of the worm wheel 25.

Therefore, when the DC motor 23 rotates, the rotation is transmitted to the drive roller 18 via the worm gear 24, the worm wheel 25, and the shaft 20, and the drive roller 18 rotates.

It should be noted that the support plate 2 described above is abolished, and pulley support plates are fixed to the upper and lower ends of the rear surface of the base piece 12 of the guide rail 11 to support the pulleys 4a and 4b.
Is also fixed to the rear surface of the base piece 12 of the guide rail 11, and the mounting bracket 17 for supporting the drive roller 18 and the drive unit 21 is also fixed to the rear surface of the base piece 12 of the guide rail 11 to simplify the structure. Can be converted.

(D. Drive wire) 26 is a drive wire, which is bridged between the pulleys 4a and 4b supported at the upper and lower ends of the support plate 2. And
Of the two portions 26a, 26b of the drive wire 26 that face each other across the pulleys 4a, 4b, both ends of the other portion 26b of the drive wire 26 are opposite to the winding groove 19 formed on the outer peripheral surface of the drive roller 18. Wound along and at each end 26 ', 26'
(One is not shown) is engaged with recesses 18a, 18a (one is not shown) formed on both end surfaces of the drive roller 18.

(E. Bracket) 27 is a bracket for supporting a lifted member, for example, a window glass.

Reference numeral 28 denotes a main portion of the bracket 27, which is made of sheet metal. A mounting hole 29 is formed at one end of the main portion 28, and a notch 30 is formed at a portion near the upper end of the other end.

Reference numerals 31 and 31 denote first sliding pieces, which are integrally formed with the main portion 28 by outsert molding so as to protrude rearward at both left and right upper and lower end portions on the rear surface of the main portion 28. The sliding piece
A protrusion protruding rearward on the left half of the rear end of the 31, 31
32 and 32 are integrally formed.

33 and 33 are sliding grooves formed in the sliding pieces 31 and 31, and the front portions 33a and 33a, the intermediate portions 33b and 33b, and the rear portions 33c and 33c are opened in a U-shape when viewed from above. The right end of the rear part 33c, 33c is the right side surface 32 of the protrusion 32, 32.
The front surfaces of the rear portions 33c, 33c are also located in the same plane as the rear surfaces 31a, 31a of the sliding pieces 31, 31.

In the sliding grooves 33, 33, front portions 33a, 33a thereof are engagement pieces 14 on the left side of the guide rail 11, intermediate portions 33b, 33b are left side pieces 13 of the guide rail 11, and a rear portion 33c. , 33c are slidably engaged with the left end of the base piece 12, respectively.

Reference numeral 34 denotes a second sliding piece, which is rearwardly formed by outsert molding at a substantially central portion in a vertical direction of a position on the rear surface of the bracket main portion 28, which is spaced rightward from the first sliding pieces 31, 31. It is provided so as to project toward it.

The second sliding piece 34 has a sliding groove formed on the right side surface thereof.
35 is formed, and the sliding groove 35 is slidably engaged with the left engaging piece 14 ′ of the guide rail 11.

Thus, the engagement of the first sliding pieces 31, 31 with the guide rail 11 restricts the movement in both directions A and B shown in FIG. 5, and together with this, the second sliding pieces 34 And guide rails
The engagement with 11 restricts the rotation in the C direction shown in FIG. 5 and the rotation in the D direction shown in FIG. 1, and the bracket 27 moves up and down with no play between the bracket 27 and the guide rail 11. Is guided by the guide rail 11.

36 is a connecting block in the shape of a substantially square block, the main part
The rear surface of 28 is fixed to the substantially central portion by outsert molding, and the receiving concave portion 37 is formed in the substantially central portion of the left side surface 36a thereof. 38 and 38 are the receiving concave portions 37 on the left side surface of the connecting block 36. It is a groove formed so as to extend vertically through the groove. In this embodiment, the connecting block 36 is the second
Is formed integrally with the sliding piece 34.

39 is a fitting block fixed to one of the two portions 26a, 26b of the drive wire 26, and the fitting block 39 is fitted into the receiving recess 37 of the connecting block 36, thereby The bracket 27 is connected to the drive wire 26. At this time, in the drive wire 26, the portions located above and below the fitting block 39 are the grooves 38 of the connecting block 36,
Fitted in 38.

(F. Operation) Then, the window glass (not shown) is supported by the main portion 28 of the bracket 27 of the lifting device 1 by the screws inserted into the mounting holes 29 and the notches 30.

Then, when the DC motor 23 rotates, one of the two portions 26a of the drive wire 26 moves up or down depending on the direction of the rotation, so that the bracket 27 connected to it moves along the guide rail 11. It will go up or down.

(G. Effect of the Invention) As is clear from the above description, the lifting device of the present invention extends in the substantially vertical direction and has a substantially U-shaped cross section so that the opening and closing edges of the U-shaped opening approach each other. Protruding to 2
A guide rail having two engaging pieces, a bracket for supporting a member to be lifted and provided with three sliding pieces slidably engaged with the guide rail, and the bracket in the vertical direction. And a drive mechanism for moving one of the sliding pieces, wherein one of the sliding pieces is slidably engaged with one end of the base piece of the guide rail, one side piece, and one side engagement piece. A moving groove, the other of the sliding pieces has a sliding groove slidably engaged with the engaging piece on the other side of the guide rail, and one of the one or the other sliding piece has one Is characterized in that the remaining two are separated from each other in the vertical direction.

Therefore, in the elevating device of the present invention, the guide rail has a substantially U-shaped cross section, so that the shape of the guide rail is simple and the cost of the guide rail can be reduced. Further, the one sliding piece and the guide rail are engaged with each other to eliminate the rattling of the bracket with respect to the guide rail in the front-rear direction and the left-right direction, and the engagement of the other sliding piece and the guide rail allows the one sliding piece to be slid. Rotation of the bracket in the left-right direction with the piece as a starting point also causes vertical movement of the bracket by vertically separating one of the sliding pieces and the other sliding piece as one and the other as two pieces. It is possible to suppress the rotation to and to expect smooth operation without rattling.

In the above description of the embodiments, the present invention has been applied as an elevating device for window glass for automobiles, but the scope of application of the present invention is not limited to this.

In addition, the above-described example is merely an example of one possible embodiment of the present invention, and the contents of the present invention are not limited thereto.

[Brief description of drawings]

1 to 8 show an embodiment of the lifting device of the present invention. FIG. 1 is a front view, FIG. 2 is a partially cutaway rear view, and FIG. 3 is a side view. 4 is an enlarged sectional view taken along line IV-IV of FIG. 1, FIG. 5 is an enlarged sectional view taken along line VV of FIG. 1, and FIG. 6 is enlarged taken along line VI-VI of FIG. A sectional view, FIG. 7 is an exploded perspective view showing a connecting portion between a drive wire and a bracket, FIG. 8 is an enlarged perspective view of a main portion, and FIG. 9 is an enlarged sectional view showing an example of a conventional lifting device. Explanation of symbols 1 ... Lifting device, 4a, 4b, 21, 26 ... Driving mechanism, 11 ...
Guide rail, 12 …… Base piece, 13 …… One side piece, 14, 14 ′…
… Engagement piece, 27 …… Bracket, 31 …… Sliding piece, 33 …… Sliding groove, 34 …… Sliding piece, 35 …… Sliding groove

Claims (1)

[Scope of utility model registration request] 1. A guide rail that extends in a substantially vertical direction and has a substantially U-shaped cross section, and has two engaging pieces protruding toward the U-shaped opening edge toward each other, and a member to be lifted and lowered. A bracket for supporting, which includes three sliding pieces that are slidably engaged with the guide rails, and a drive mechanism that moves the bracket in the vertical direction. One is provided with a sliding groove slidably engaged with one end of the base piece of the guide rail, one side piece and one side engagement piece, and the other of the sliding pieces is , A slide groove that slidably engages with the engaging piece on the other side of the guide rail, and one of the one or the other sliding piece is one and the rest is two.
Lifting device characterized by being individual and separated vertically