JP2020197093A - Power sliding device of vehicle sliding door - Google Patents

Abstract

To provide a power sliding device capable of achieving cost reduction by improving standardization of components by employing a step arrangement type for the power sliding device that uses a highly versatile wire cable, and capable of assuring a flatness of a top part of a step panel by achieving thinning of a power unit.SOLUTION: A power unit 20A placed in a step portion of a doorway comprises a pair of wire drums connected to a pair of cables 24A. The cable 24A is connected to a lower roller support 18 that interlocks with a sliding door. The lower roller support 18 includes a rolling roller 29 that rolls around a horizontal shaft on a top face of a vehicle body panel 21A of the step portion, and a guide roller 27 of a vertical shaft that slidably engages with a lower rail formed on a bottom face of a step panel 21B of the step portion. A motor and the wire drum of the power unit 20A are placed between the step panel 21B and the vehicle body panel 21A.SELECTED DRAWING: Figure 2

Description

The present invention relates to a power slide device for a vehicle slide door.

Conventionally, a power slide device for moving a slide door slidably attached to a guide rail provided on a vehicle body in a door opening direction or a door closing direction by motor power is known.

The power slide device has a step arrangement type (see Patent Documents 1, 2, 3 and 4) installed in the underfloor space at the entrance of the vehicle body, and a quarter panel arrangement type installed in the vehicle interior space of the quarter panel of the vehicle body (see Patent Documents 1, 2, 3 and 4). Patent Document 5), a door internal arrangement type installed in the internal space of the sliding door (see Patent Document 6), and the like.

In the step arrangement type power slide device described in Patent Documents 1 to 3, the annular toothless endless belt connected to the slide door is circulated and rotated by the toothed drive pulley to open the slide door or in the door opening direction. It is configured to slide in the direction of closing the door.

Further, in the step arrangement type power slide device described in Patent Document 4, the wire cable (Bowden cable) connected to the slide door is wound up and unwound by a wire drum to open the slide door in the opening direction or. It is configured to slide in the door closing direction.

Further, the power slide device described in Patent Documents 5 and 6 has the same basic configuration as Patent Document 4, and the slide door is moved by using a wire cable (Bowden cable) and a wire drum.

Japanese Unexamined Patent Publication No. 11-008828 JP-A-2007-132141 Japanese Unexamined Patent Publication No. 2011-105263 Japanese Unexamined Patent Publication No. 2005-290702 JP 2015-142410 JP-A-2018-1038887

Since the component parts of the step arrangement type power slide device described in Patent Documents 1 to 3 are significantly different from those of other arrangement structure power slide devices, there are few parts that can be commonly used, which leads to cost increase and inventory management. It was a hassle.
Further, the step arrangement type power slide device has a large thickness to be arranged between the underfloor panel of the vehicle body and the step panel, and when it is put into practice, a part of the power mechanism is formed of the step panel as in Patent Document 3. It will be placed on the upper surface. For this reason, a large step is generated in the step panel and the decorative panel attached to the upper surface of the step panel, which hinders getting on and off, especially on the third row of seats.
On the other hand, Patent Document 4 shows a configuration in which a power slide device using a Bowden cable is arranged between the underfloor panel of the vehicle body and the step panel, but a wire for winding and feeding the Bowden cable The specific configuration of the drum and power unit was not disclosed, and it was difficult to implement it.

Therefore, in the present invention, the power unit 20A capable of moving the slide door 11 slidably attached to the vehicle body 10 in the closing direction and the opening direction by the power of the motor 22 is moved to the step portion 21 of the entrance / exit 12 of the vehicle body 10. In the power slide device arranged in: The power unit 20A includes a door opening wire drum 23A that winds up one end side of the door opening cable 24A and a door closing wire drum 23B that winds up one end side of the door closing cable 24B; The other end side of the 24A and the other end side of the closed door cable 24B are connected to a lower roller support 18 interlocking with the slide door 11; the lower roller support 18 is connected to the upper surface 31 of the vehicle body panel 21A of the step portion 21. A rolling roller 29 that rolls on the horizontal axis is provided; the lower roller support 18 has a vertical axis that slidably engages with a lower rail 14 formed on the lower surface of the step panel 21B of the step portion 21. The guide roller 27 of the power unit 20A is provided; the motor 22 of the power unit 20A, the door opening wire drum 23A, and the door closing wire drum 23B are of a vehicle slide door arranged between the step panel 21B and the vehicle body panel 21A. It is configured with a power slide device.

In the inventions according to claims 1 to 3, the power slide device using a highly versatile wire cable is made into a step arrangement type to increase the sharing of parts and reduce the cost. In addition, the power unit By reducing the thickness, the power slide device can be arranged between the metal panel 21A and the step panel 21B without increasing the height interval, and the effect of ensuring the flatness of the upper part of the step panel 21B can be obtained.

It is a side view of the vehicle body and the slide door provided with the power slide device according to this invention. It is an exploded perspective view of the step member of the entrance / exit of the vehicle body. It is a rear view of the step panel of a step member, a power unit, and a lower roller support. It is an exploded perspective view of the lower roller support. It is a top view which showed the internal structure of a power unit. It is an exploded perspective view of a lower rail and a lower roller support.

A mode for carrying out the present invention will be described with reference to the drawings. FIG. 1 shows a vehicle body 10, a slide door 11 slidably attached to the vehicle body 10, and an entrance / exit 12 that can be blocked by the slide door 11.

The upper rail 13 is fixed to the upper side of the vehicle body 10, the lower rail 14 is fixed to the lower side, and the center rail 15 is fixed to substantially the center of the upper and lower parts of the vehicle body 10. The center rail 15 is arranged on the outer surface side of the quarter panel 16 of the vehicle body 10. The upper rail 13, the lower rail 14, and the center rail 15 extend in the front-rear direction of the vehicle.

The slide door 11 is provided with an upper roller support 17, a lower roller support 18, and a center roller support 19. The three roller supports 17, 18, and 19 are arranged so as to be the vertices of a triangle, and are slidably engaged with the upper rail 13, the lower rail 14 and the center rail 15, respectively, and the slide door 11 is slidably engaged with the vehicle body 10. Attach to.

The power slide device 20 according to the present invention is attached to the step portion 21 of the entrance / exit 12.

As shown in FIG. 2, the step portion 21 includes a plurality of upper and lower panels. The lowermost body panel 21A can also be used as a vehicle floor plate or an equivalent underfloor protection panel. The step panel 21B is fixed to the upper part of the vehicle body panel 21A at a predetermined height interval by using a spacer or the like. The step panel 21B is a strength panel made of resin. A decorative panel 21C is provided on the upper surface of the step panel 21B. The decorative panel 21C is a floor surface used as a stepping stone when getting on and off, and a flat surface that does not interfere with getting on and off is preferable.

The power slide device 20 is arranged between the vehicle body panel 21A and the step panel 21B. As shown in FIG. 3, the power unit 20A of the power slide device 20 is provided with a motor 22, a pair of open door wire drums 23A and a closed door wire drum 23B rotated by the motor 22.

One end of the door opening cable 24A is connected to the door opening wire drum 23A, and the other end of the door opening cable 24A is connected to the lower roller support 18 via the rear reversing pulley 25A. Further, one end of the closed door cable 24B is connected to the closed door wire drum 23B, and the other end of the closed door cable 24B is connected to the lower roller support 18 via the front reversing pulley 25B. The lower roller support 18 is connected to the slide door 11 via the lower bracket 18A.

When the motor 22 is rotated to open the door, the door opening wire drum 23A winds up the door opening cable 24A, and the door closing wire drum 23B unwinds the door closing cable 24B to move the lower roller support 18 in the door opening direction and slide the door. 11 moves to open the door together with the lower roller support 18. When the motor 22 is rotated to close the door, the slide door 11 moves in the closing direction by the opposite action.

The lower rail 14 is integrally formed on the back surface of the step panel 21B. The lower rail 14 is provided with left and right guide walls 14A, and the lower side is an open surface.

As shown in FIG. 4, the lower roller support 18 is provided with guide rollers 27, 27 axially supported by the vertical axes 26, 26, and the guide rollers 27, 27 are slid on the lower rail 14 provided on the back surface of the step panel 21B. Engage freely. Further, the lower roller support 18 is provided with a rolling roller 29 pivotally supported by a horizontal shaft 28. The rolling roller 29 runs on the upper surface 31 of the vehicle body panel 21A. The lower roller support 18 is suppressed from swinging in the vehicle body width direction by the contact between the guide wall 14A of the lower rail 14 and the guide rollers 27, 27, and the weight of the slide door 11 rolls on the upper surface 31 of the vehicle body panel 21A. It is well supported by the moving roller 29.

As shown in FIG. 5, the power unit 20A sets the motor shaft 22A of the motor 22, the drum shaft 23C of the open door wire drum 23A, and the drum shaft 23D of the closed door wire drum 23B in parallel with each other. Further, the motor 22, the open door wire drum 23A, and the closed door wire drum 23B are arranged so as not to overlap each other in the axial core direction. As a result, the thickness of the power unit 20A can be significantly suppressed. Further, by forming the wire drum separately into an open door wire drum and a closed door wire drum, it is possible to significantly reduce the thickness in the drum axial direction as compared with a single type wire drum.

It is desirable that the motor 22 is arranged on the same rotation plane as the door open wire drum 23A and the door closed wire drum 23B. As a result, the thickness in the axial direction can be further suppressed.

A motor gear 22B is fixed to the motor shaft 22A of the motor 22. The motor gear 22B is preferably a helical gear. The large diameter gear 30A of the two-stage gear 30 is meshed with the motor gear 22B. The gear shaft 30B of the two-stage gear 30 is set in parallel with the motor shaft 22A, the drum shaft 23C, and the drum shaft 23D. The small diameter gear 30C of the two-stage gear 30 meshes with the outer peripheral gear of the open door wire drum 23A and the outer peripheral gear of the closed door wire drum 23B.

By rotating the door opening wire drum 23A and the door closing wire drum 23B by the motor 22 via the two-stage gear 30, the door opening wire drum 23A and the door closing wire drum 23B can be rotated in the same direction at a constant speed.

In the present application, the wire drum for winding and unwinding the wire cable is divided into an open door wire drum 23A and a closed door wire drum 23B which are pivotally supported at positions where they do not overlap each other by a separate shaft. By dividing the wire drum, it is possible to significantly reduce the axial thickness of the wire drum as compared with the conventional single-type wire drum.

The tip of the lower bracket 18A is pivotally supported by a shaft 33 in the shaft hole 32A of the roller base 32 of the lower roller support 18. The roller base 32 is preferably made of metal. A pair of horizontal protrusions 32B are provided on the opposite side of the shaft hole 32A of the roller base 32. A vertical axis 26 extending upward is planted in each of the horizontal protrusions 32B, and a guide roller 27 is pivotally supported on the vertical axis 26, respectively.

A rolling roller 29 is pivotally supported on the roller base 32 by a horizontal shaft 28. The rolling roller 29 is preferably arranged between the pair of guide rollers 27, and the upper surface 31 of the vehicle body panel 21A is rolled like the movement locus 31A. The roller base 32 provided with the rolling roller 29 and the guide roller 27 is fixed in advance to the lower bracket 18A of the slide door 11.

The lower roller support 18 is provided with a cable connector 34. The cable head 24C at the other end of the open door cable 24A and the cable head 24D at the other end of the closed door cable 24B are connected to the cable connector 34. The cable connector 34 is fixed to the cable holder 35 of the lower roller support 18 with rivets 36. The door opening cable 24A and the door closing cable 24B to which the other end side is connected by the cable connecting tool 34 will exhibit an annular shape as a whole, and when the motor 22 rotates the door opening or closing, the door opening cables arranged in an annular shape The 24A and the closed door cable 24B rotate in an annular shape to move the cable connector 34 (lower roller support 18) in the door opening direction or the door closing direction.

The roller base 32 and the cable holder 35 are connected to each other by a stopper 37 such as a bolt.

A notch insertion port 38 is formed in a part of the guide wall 14A of the lower rail 14 to which the guide rollers 27 and 27 are slidably engaged with each other, and the roller base 32 can be inserted into the lower rail 14 through the notch insertion port 38. Constitute.

The lower roller support 18 is assembled in separate steps on the slide door 11 side and the vehicle body 10 side. On the vehicle body 10 side, the power unit 20A, the reversing pulleys 25A, 25B, etc. are assembled on the back surface of the step panel 21B, the door opening cable 24A and the door closing cable 24B are connected in a ring shape by the cable connector 34, and the cable is arranged on the lower rail 14. The cable connector 34 is fixed to the holder 35, and the step portion 21 of the vehicle body 10 is assembled.

Further, on the slide door 11 side, the lower bracket 18A is pivotally stopped by the shaft 33 on the roller base 32 to which the guide roller 27 and the rolling roller 29 are attached.

The cable holder 35 is temporarily held at a specific position of the lower rail 14, the roller base 32 is inserted into the lower rail 14 through the notch insertion port 38 of the guide wall 14A, and the cable holder 35 and the roller base 32 are stopped. The lower roller support 18 is connected by 37 to complete the assembly, and the notch insertion port 38 of the guide wall 14A is closed by a separate cover 39. It should be noted that preferably, one of the pair of stoppers 37 is made to fasten the cable holder 35 and the roller base 32 in the lower rail 14, but the other stopper 37 is outside the lower rail 14 (guide wall 14A). The cable holder 35 and the roller base 32 are fastened together.

The motor 22 of the present application is an inner rotor type, and employs a 10-pole, 12-phase, flat and thin brushless motor using a neodymium magnet. The motor 22 is provided with U-phase lines, V-phase lines, and W-phase lines (not shown) at intervals of 120 degrees.

The brushless motor 22 has a long life and mechanical efficiency due to the omission of the brush. Since the brushless motor 22 does not have sliding contact when energized, it does not generate sliding noise and is excellent in quietness, and since sparks are not generated by the brush, the EMC noise problem can be avoided.

The brushless motor 22 is thin because it does not use a brush. Since the coil can be arranged on the outer peripheral side of the inner rotor type motor 22, the heat dissipation is excellent and the rotational inertia can be reduced. Brushless motors can be easily multipolarized, and cogging can be reduced by multipolarizing the motors.

As a brushless characteristic, the motor 22 can perform stop holding control that generates holding torque even in the stopped state. The stop holding control uses the motor 22 as a brake without a separate clutch. Therefore, the slide door 11 can be held in the stopped state, and the slide door 11 can be held even on an inclined ground at a predetermined angle. It can be held in a stopped state. The motor 22 without a clutch contributes to the miniaturization and thinning of the power unit 20A.

The motor 22 can perform step control like a stepping motor, and is excellent in controllability and rotation accuracy. Further, the motor 22 can be driven by a sine wave, and torque fluctuation can be reduced.

The stop holding control of the motor 22 can also suddenly brake the slide movement of the slide door 11. In the motor 22, the magnetic force of the permanent magnet can be changed by vector control, and high torque low rotation operation or low torque high rotation operation can be performed depending on the type of the slide door 11 and other specifications. Further, the high voltage and low rotation control can obtain an operation similar to that of a stepping motor. In the low voltage and high rotation control, it is possible to assist the opening and closing operation manually in the manual opening and closing mode of the slide door 11.

By adopting a brushless motor for the motor 22, the behavior of the slide door 11 can be stabilized by taking advantage of the above characteristics. By improving controllability, low current operation is possible, harness diameter and fuse capacity can be reduced, and cost can be reduced.

As described above, in the present invention, the motor 22 is miniaturized in the motor shaft 22A direction, and the drum shafts 23C and 23D are miniaturized by dividing the wire drum into a pair of open door wire drums 23A and a closed door wire drum 23B. By arranging the motor 22, the open door wire drum 23A, and the closed door wire drum 23B so as not to overlap with each other in the axial direction, the miniaturization in the axial direction can be achieved, and the thickness of the power unit 20A is significantly reduced as a whole. Can be made to. Therefore, the power unit 20A can be smoothly housed in the narrow vertical space between the vehicle body panel 21A and the step panel 21B, whereby the upper surface (decorative panel 21C) of the step panel 21B becomes flatter. It can be expected that getting on and off will be smooth.

Further, in the step arrangement type power slide device, instead of the endless toothed annular belt which is inconvenient to handle, it is widely used in the quarter panel arrangement type power slide device and the door internal arrangement type power slide device. Since a wire cable (Bowden cable) can be used, cost reduction can be expected by sharing and sharing parts.

10 ... Body, 11 ... Sliding door, 12 ... Entrance / exit, 13 ... Upper rail, 14 ... Lower rail, 14A ... Guide wall, 15 ... Center rail, 16 ... Quarter panel, 17 ... Upper roller support, 18 ... Lower roller support Body, 18A ... Lower bracket, 19 ... Center roller support, 20 ... Power slide device, 20A ... Power unit, 21 ... Step part, 21A ... Body panel, 21B ... Step panel, 21C ... Decorative panel, 22 ... Motor, 22A ... motor shaft, 22B ... motor gear, 23A ... open door wire drum, 23B ... closed door wire drum, 23C ... drum shaft, 23D ... drum shaft, 24A ... open door cable, 24B ... closed door cable, 24C ... cable head, 24D ... Cable head, 25A ... Rear reversing pulley, 25B ... Front reversing pulley, 26 ... Vertical axis, 27 ... Guide roller, 28 ... Horizontal axis, 29 ... Rolling roller, 30 ... Two-stage gear, 30A ... Large diameter gear, 30B ... Gear shaft, 30C ... Small diameter gear, 31 ... Top surface, 31A ... Movement locus, 32 ... Roller base, 32A ... Shaft hole, 32B ... Horizontal protrusion, 33 ... Shaft, 34 ... Cable connector, 35 ... Cable holder, 36 ... rivet, 37 ... stopper, 38 ... notch insertion slot, 39 ... cover.

Claims (3)

A power unit (20A) capable of moving the sliding door (11) slidably attached to the vehicle body (10) in the closing direction and the opening direction by the power of the motor (22) is attached to the entrance (10) of the vehicle body (10). In the power slide device arranged in the step portion (21) of 12):
The power unit (20A) includes an open door wire drum (23A) that winds up one end side of the door open cable (24A) and a closed door wire drum (23B) that winds up one end side of the closed door cable (24B);
The other end side of the door opening cable (24A) and the other end side of the door closing cable (24B) are connected to a lower roller support (18) interlocking with the slide door (11);
The lower roller support (18) is provided with a rolling roller (29) that rolls on the upper surface (31) of the vehicle body panel (21A) of the step portion (21) about a horizontal axis;
The lower roller support (18) is provided with a vertical guide roller (27) that slidably engages with the lower rail (14) formed on the lower surface of the step panel (21B) of the step portion (21);
The motor (22) of the power unit (20A), the door opening wire drum (23A), and the door closing wire drum (23B) are arranged between the step panel (21B) and the vehicle body panel (21A). Power slide device for vehicle slide doors. In claim 1, the motor shaft (22A) of the motor (22), the drum shaft (23C) of the door open wire drum (23A), and the drum shaft (23D) of the door closed wire drum (23B). A vehicle slide in which the cores are parallel to each other and the motor (22), the door open wire drum (23A), and the door closed wire drum (23B) are arranged so as not to overlap each other in the axial core direction. Door power slide device. The power slide device for a vehicle slide door according to claim 1 or 2, wherein a flat decorative panel (21C) is provided on the upper part of the step panel (21B).

Images