JP2613483B2 - lift device - Google Patents

Description

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

A. Industrial application fields B. Summary of the invention C. Prior art [Fig. 11] D. Problem to be solved by the invention [Fig. 11] E. Means to solve the problem F. Embodiment [ 1 to 10] a. Supporting member b. Folding guide member c. Wire drum, driving part d. Driving wire e. Slider f. Operation G. Effect of the invention (A. Industrial application field) It relates to a new lifting device. Specifically, a new elevating device that can reduce the weight without compromising the required strength, realizes a compact overall shape, and integrates all parts so that it can be easily assembled to the vehicle body. It is intended to provide.

(B. Summary of the Invention) The lifting device of the present invention includes a guide rail for guiding a supporting member to a member to be raised and lowered, a mounting bracket for supporting a folded guide member, and a motor bracket for supporting a driving unit. The guide rail is formed by bending a metal plate so that its cross-sectional shape is approximately U-shaped, and bending it so that the back side is inside in the direction that it extends vertically up and down. Is made of a metal plate that is thicker than the material metal plate of the guide rail, and is fixed to the upper and lower ends of the guide rail by welding, respectively.The motor bracket is fixed to the back of the approximate center of the guide rail by welding. Since the tension of the drive wire bridged between the upper and lower folded guide members is supported by a thicker and stronger mounting bracket than the guide rail, the guide rail The metal plate of the guide rail does not have to be so strong, so that a thin metal plate can be used for this guide rail to reduce the overall weight, and the motor bracket is most suitable for the guide rail. Since it is fixed to the back (base), which is a strong part, it is safe even if a large force is applied to the drive unit and the like, and the motor bracket and the drive unit are arranged in the curved concave portion of the guide rail. The device can be made compact, and all parts constituting the elevating device can be integrated so that the assembling property to the vehicle body can be improved.

(C. Prior Art) [FIG. 11] There is an elevating device which drives a wire, connects an elevating member to the wire, and moves the elevating member up and down.

Illustrated in FIG. 11 is such a lifting device, which is described in German Patent No. 3,136,890.

Reference numeral a denotes a vertically long support plate, and protrusions b and b 'protruding laterally are formed at both upper and lower ends thereof, and guide rails are provided on both side edges of a portion excluding the upper and lower ends of the support plate a. c and c are formed.

Mounting brackets d and d 'are fixed at positions near the upper and lower ends on the back surface of the support plate a.
The support plate a is attached to a mounting portion, for example, a door frame of an automobile by d '.

Reference numeral e denotes a wire drum, which is rotatably supported by a drum bracket f fixed so as to protrude from the intermediate portion of the support plate a in the same direction as the protruding portions b and b '. g is a geared motor fixed to an intermediate portion of the supporting plate a, and the wire drum e is rotated by the geared motor g.

Reference numerals h and h 'denote pulleys, which are respectively rotatably supported by vertically projecting portions b and b' of the support plate a.

A drive wire i extends vertically between the guide rails c and c, and is wound around pulleys h and h 'at both upper and lower ends, turned over, and wound around a wire ram e.

Reference numeral j denotes a slider slidably supported by the guide rails c and c, and is connected to the drive wire i.

When the geared motor g is driven to drive the drive wire i, the slider j is raised or lowered in accordance with the direction of the drive wire i, so that the slider j supports a member to be raised and lowered, for example, a window glass of an automobile. If so, the member to be raised and lowered can be moved up and down.

(D. Problems to be Solved by the Invention) [FIG. 11] In the above-described wire-driven lifting device, the looseness of the drive wire i impedes correct operation. You must be nervous at all times. Moreover, it must be kept in a tensioned state while supporting a relatively heavy elevating member such as a window glass, so that a considerable load is applied to the pulleys h and h '. And this pulley h,
The load applied to h 'is eventually received by the support plate a. The rigidity of the portion of the support plate a where the guide rails c and c are formed is increased, but the protruding portions b and b 'must withstand the above load due to the rigidity of the material itself. It is necessary to use a metal material having a considerable thickness as a material for the above, and there is a problem that the weight of the lifting / lowering device is correspondingly increased and a cost is increased.

(E. Means for Solving the Problems) In order to solve the above-mentioned problems, the lifting device of the present invention
The support member includes a guide rail for guiding the member to be raised and lowered, a mounting bracket for supporting the folded guide member, and a motor bracket for supporting the drive unit, and the guide rail traverses the metal plate. While bending so that the surface shape becomes substantially U-shaped, it is formed by bending so that the back side is inside in the direction that it extends vertically vertically,
The mounting bracket is made of a metal plate thicker than the material metal plate of the guide rail, and is fixed to the upper and lower ends of the guide rail by welding, respectively, and the motor bracket is fixed to the back of the substantially central portion of the guide rail by welding. Things.

Therefore, in the elevating device of the present invention, the tension of the drive wire bridged between the two upper and lower folded guide members is supported by the mounting bracket which is thicker and stronger than the guide rail, so that the metal plate of the guide rail is not so strong. Therefore, the weight of the guide rail can be reduced by using a thick metal plate. In addition, since it is possible to use a thinner metal plate for the guide rail than in the past, the cost can be reduced. In addition, since the motor bracket is fixed to the rear surface (base portion), which is the strongest part of the guide rail, it is safe to apply a large force to the drive unit and the like. The device can be made compact because it is arranged in the recessed portion. Further, since all parts constituting the elevating device are integrated, it is possible to improve the assemblability of the elevating device to the vehicle body.

(F. Embodiment) [FIGS. 1 to 10] Hereinafter, details of the lifting device according to the present invention will be described in accordance with a first embodiment illustrated.

(A. Support Member) Reference numeral 2 denotes a support member, which includes a guide rail and a mounting bracket.

Reference numeral 3 denotes a guide rail, which is formed by bending a metal plate. The guide rail 3 has a base 3a which is elongated in the vertical direction and which is gently curved in the thickness direction in the vertical direction.
Side pieces 3b, 3b protruding forward from both side edges of 3a, and side pieces 3b,
Engaging pieces 3 protruding from the front edge of 3b toward each other
c, 3c. Large notches 4, 4 'reaching the upper and lower ends are formed on one side edge of the upper and lower ends of the guide rail 3, respectively.

As described above, the guide rail 3 has two side edges extending in the longitudinal direction, the side edges of the base 3a, the side pieces 3a and 3b, and the engagement pieces.
Since 3c, 3c form a C-channel shape in the cross-sectional shape, the overall rigidity, particularly the rigidity against the compressive force from both ends of the longitudinal method, is exhibited.

Reference numeral 5 denotes an upper mounting bracket, which is also formed of a metal plate, and is fixed to the back surface of the upper end of the guide rail 3 by welding or the like.

Guide rail 3 of mounting bracket 5 as viewed from the front
The mounting bolts 6, 6 are fixed to the portions protruding from the left and right sides so as to protrude rearward therefrom.

Reference numeral 7 denotes a lower mounting bracket, which is also formed by processing a metal plate, and is fixed to the back surface of the lower end of the guide rail 3 by welding or the like. A protruding portion 7a protruding rearward is formed in a bent portion at a portion near the upper end of the mounting bracket 7, and a mounting bolt 8 is fixed to the protruding portion 7a so as to protrude rearward therefrom.

The mounting brackets 5 and 7 are formed of a metal plate that is thicker than the material metal plate of the guide rail 3.

The support member 2 as described above is attached to an automobile door by fixing its mounting bolts 6, 6 and 8 to a door frame (not shown) of the automobile by nut fastening.

(B. Return Guide Member) Next, the return guide member will be described.

Reference numeral 9 denotes a support shaft 10 protruding to the front side at a portion of the upper mounting bracket 5 which is substantially located within the notch 4 of the guide rail 3.
The pulley is rotatably supported on the peripheral surface thereof, and has a groove 9a formed on the peripheral surface thereof. And this pulley 9 becomes an upper folding guide member.

Numeral 11 denotes a movable pulley, which is substantially in the shape of a crescent moon as viewed from the front, and has a step portion formed at an intermediate position between the upper chord portions. A groove 12 is formed on the outer side surface having an arc shape. 13 and 13 are protrusions projecting from one of the outer edges positioned to sandwich the groove 12 of the arc-shaped portion toward the other, and are formed by the protrusions 13 and 13 in the groove 12 described later. The detachment of the drive wire from the groove 12 is prevented.

On one side of the upper surface of the movable pulley 11 across the step surface, a receiving hole 14 extending downward therefrom is formed.

In addition, the movable pulley 11 penetrates this in the thickness direction,
A guided hole 15 that is long in the up-down direction and extends in parallel with the receiving hole 14 is formed, and the surface side 15a of the guided hole 15 is formed slightly larger than other portions.

Reference numeral 16 denotes a guided projection protruding from the rear surface of the movable pulley 11.

Reference numeral 17 denotes a vertically long guide elongated hole formed in a portion of the lower mounting bracket 7 located in the notch 4 'of the guide rail 3, and reference numeral 18 denotes a side edge of the guide elongated hole 17 extending in the vertical direction. It is a guide wall which is turned up from one side to the back side. 19
Reference numeral 20 denotes a mounting hole formed in the mounting bracket 7 at a position separated rightward from the guide slot 17, and reference numeral 20 denotes a mounting bracket 7.
Among them, the abutting wall is formed so as to rise forward at a position slightly above the position where the guide slot 17 and the mounting hole 19 are formed.

Reference numeral 21 denotes a guide pin, which has a cylindrical intermediate portion 21a and the intermediate portion 2a.
A caulking portion 21b projecting from the front end of 1a and having a smaller diameter than the intermediate portion 21a, and a head portion 21c formed at the front end of the intermediate portion 21a and having a vertically-long rectangular shape as viewed from the front are integrally formed. And
The outer diameter of the intermediate portion 21a is slightly smaller than the width of the portion other than the surface side portion 15a of the guided hole 15 of the movable pulley 11, and the width of the head portion 21c is substantially equal to the width of the surface side portion 15a of the guided hole 15. Is formed.

Thus, the movable pulley 11 is superimposed on the surface of the mounting bracket 7 so that the guided projection 16 is slidably engaged with the guide elongated hole 17, and the caulked portion 21b of the guide pin 21 and the intermediate portion 2
1a is inserted into the guided hole 15, and the swaged portion 21b is attached to the mounting hole 1.
9, and caulking a portion of the caulking portion 21 b protruding from the rear side of the mounting bracket 7 to attach the guide pin 21 to the mounting bracket 7.
Fixed to Then, at this time, the head 21c of the guide pin 21 is slidably engaged with the surface side portion 15a of the guided hole 15. Thus, the movable pulley 11 is supported by the mounting bracket 7 so as to be vertically movable.

Reference numeral 22 denotes a compression coil spring for urging the movable pulley 11 to move. One end of the compression coil spring is inserted into the receiving hole 14 of the movable pulley 11, and the other end is resiliently pressed against the abutment wall 20 of the mounting bracket 7. Touched.

(C. Wire Drum, Driving Unit) Reference numeral 23 denotes a motor bracket, which is fixed to the rear surface at a position slightly lower than the center of the guide rail 3 by welding or the like and protrudes from the right edge of the guide rail 3. As described above, since the motor bracket 23 is fixed to the strongest portion of the guide rail 3, even if a large force is applied to the motor bracket 23 or the like, it is OK. And
A circular insertion hole 24 is formed at the protruding end of the motor bracket 23.

Reference numeral 25 denotes a drive unit, and necessary elements are housed in a case 26 fixed to the back of the motor bracket 23. As described above, since the motor bracket 23 and the drive unit 25 are arranged in the curved concave portion of the guide rail 3, the device can be made compact. Further, since the motor bracket 23 supporting the drive unit 25 is also fixed to the guide rail 3, the assembling property of the lifting device 1 to the vehicle body is improved.

Reference numeral 27 denotes a DC motor. A worm gear 28 is fixed to a rotating shaft 27a, and a worm wheel 29 is meshed with the worm gear 28. An output shaft 30 whose base end is fixed to the center of the worm wheel 29 projects through the center of the insertion hole 24 to the front side of the motor bracket 23.

31 is a wire drum. A spiral winding groove 32 is formed on the outer peripheral surface of the wire drum 31. And
The central portion of such a wire drum 31 is fixed to a portion of the output shaft 30 of the drive unit 25 that projects toward the front of the motor bracket 23.

Therefore, when the DC motor 27 rotates, the rotation is transmitted to the wire drum 31 via the worm gear 28, the worm wheel 29, and the output shaft 30, and the wire drum 31 rotates.

(D. Drive Wire) Reference numeral 33 denotes a drive wire, which is bridged between the pulleys 9 and 11 supported on both upper and lower ends of the support member 2. A winding groove formed on the outer peripheral surface of the wire drum 31 with both ends located at the other side 33b of the two portions 33a and 33b of the drive wire 33 opposed to each other across the pulleys 9 and 11 respectively. Wound along 32, and each end 3
3 ', 33' (one not shown) is a wire drum
It is engaged with concave portions 31a, 31a formed on one end surface of 31.

(E. Slider) 34 is a slider for supporting the member to be raised and lowered.

Reference numeral 35 denotes a main part of the slider 34, which is formed of sheet metal. A mounting hole 36 is formed at one end of the main portion 35, and a cutout 37 is formed at a portion near the upper end of the other end.

Reference numerals 38, 38, and 38 denote guided blocks fixed to substantially the center of the back surface of the slider 34.
An engagement groove 38 slidably engaged with 3b, 3b and engagement pieces 3c, 3c.
The sliders 34 are supported by the guide rails 3 so as to be vertically movable.

Reference numeral 39 denotes a connection block having a substantially square block shape.
It is fixed to the back of 35.

Numeral 40 denotes a receiving recess formed substantially at the center of the rear surface of the connecting block 39. Reference numerals 41 and 41 denote grooves formed on the rear surface of the connecting block 39 so as to extend vertically through the receiving recess 40.

Reference numeral 42 denotes a fitting block fixed to one of the two portions 33a and 33b of the driving wire 33, and the fitting block 42 is fitted into the receiving recess 40 of the connection block 39, , The slider 34 is connected to the driving wire 33. At this time, the portions of the drive wire 33 located above and below the fitting block 42 are the grooves 41 of the connecting block 39,
It fits in 41.

(F. Operation) Then, a window glass (not shown) is supported on the main portion 35 of the slider 34 of the elevating device 1 by screws inserted through the mounting holes 36 and the notches 37.

When the DC motor 27 rotates, one of the two portions 33a of the drive wire 33 moves up or down in accordance with the direction of the rotation, so that the slider 34 connected thereto moves along the guide rail 3 along the guide rail 3. Will rise or fall.

When the drive wire 33 is stretched during repeated use, the movable pulley 11 moves downward to remove the slack of the drive wire 33, so that the drive wire 33 is always kept in a tensioned state, and a stable operation is performed. Can be.

In the initial state, the length of the drive wire 33 may be set in a state where the movable pulley 11 is located near the upper limit of the movement range.

(G. Effects of the Invention) As is clear from the above description, the lifting device of the present invention is provided between the two return guide members and the return guide members provided at the upper and lower ends of the support member. A drive wire connected to the elevating member together with a driving unit for moving the driving wire, the support member, a guide rail for guiding the elevating member, and a support rail for supporting the folded guide member The guide rail is formed by mounting a bracket and a motor bracket for supporting the driving unit, and the guide rail is formed by bending a metal plate so that a cross-sectional shape thereof becomes substantially U-shaped, and extending in a vertically elongated direction. The mounting bracket is made of a metal plate that is thicker than the material metal plate of the guide rail, and the mounting bracket is Secured at respective opposite ends welded, the motor bracket is characterized in that it is fixed by welding to a substantially central portion back surface of the guide rail.

Therefore, in the elevating device of the present invention, the tension of the drive wire bridged between the two upper and lower folded guide members is supported by the mounting bracket which is thicker and stronger than the guide rail, so that the metal plate of the guide rail is not so strong. Therefore, the weight of the guide rail can be reduced by using a thin metal plate. In addition, since it is possible to use a thinner metal plate for the guide rail than in the past, the cost can be reduced. In addition, since the motor bracket is fixed to the rear surface (base portion), which is the strongest part of the guide rail, it is safe to apply a large force to the drive unit and the like. The device can be made compact because it is arranged in the recessed portion. Further, since all parts constituting the elevating device are integrated, it is possible to improve the assemblability of the elevating device to the vehicle body.

It should be noted that the structures and shapes shown in the above embodiments are only examples of the embodiment of the present invention, and the contents of the present invention are not limited by these. For example, the lower folding guide member may be of a rotary type, and various changes can be made without departing from the spirit of the present invention.

[Brief description of the drawings]

1 to 10 show an embodiment of the lifting device according to the present invention. FIG. 1 is a front view, FIG. 2 is a rear view showing a partially cutaway view, FIG. 3 is a side view, 4 is an exploded perspective view of an upper end portion, FIG. 5 is an exploded perspective view of a lower end portion, FIG. 6 is an exploded perspective view of a driving portion, FIG. 7 is an enlarged sectional view taken along line VII-VII of FIG. FIG. 8 is an enlarged sectional view taken along line VIII-VIII in FIG. 1,
9 is an enlarged sectional view taken along line IX-IX of FIG. 1, FIG. 10 is an exploded perspective view showing a connecting portion between a driving wire and a slider, and FIG. 11 is a front view showing an example of a conventional elevating device. It is. DESCRIPTION OF SYMBOLS 1 ... Elevating device, 2 ... Support member, 3 ... Guide rail, 3a ... Back surface, 5 ... Mounting bracket, 7 ... Mounting bracket, 9 ... Folding guide member, 11 ... Folding guide Member, 23 ... Motor bracket, 25 ... Drive section, 33 ... Drive wire

Claims (1)

(57) [Claims] 1. A folding guide member provided at both upper and lower ends of a supporting member, a driving wire that is bridged between the two folding guide members and connected to a member to be raised and lowered, and a driving wire that moves the driving wire. A support rail, a guide rail for guiding the elevating member, a mounting bracket for supporting the folded guide member, and a motor bracket for supporting the drive unit, The guide rail is formed by bending a metal plate so that the cross-sectional shape thereof is substantially U-shaped, and bending the metal plate so that the back surface is inward in a vertically elongated direction, and the mounting bracket is The guide rail is made of a metal plate that is thicker than the metal plate, and is fixed to the upper and lower ends of the guide rail by welding, respectively. An elevating device fixed to the back of the guide rail at a substantially central portion by welding.