JP6854309B2 - Power slide device for vehicle slide door - Google Patents

Description

The present invention relates to a power slide device for a vehicle slide door. The invention of the present application relates to an improvement of Japanese Patent Application No. 2017-171271 submitted by the same applicant.

Conventionally, a slide door that is slidably attached to a guide rail provided on the vehicle body, a pair of wire cables connected to the slide door or the vehicle body, and a wire drum that can pull the wire cable in the door opening direction or the door closing direction by motor power. Power slide devices equipped with the above are known.

The power slide device is roughly classified into a case where it is installed in the vehicle interior space on the back side (indoor side) of the quarter panel of the vehicle body (Patent Document 1) and a case where it is installed in the internal space of the slide door (Patent Document 2). Regardless of where the power slide device is installed, the major issue is the bulk of the power slide device, and in particular, the thickness in the width direction with respect to the vehicle body. For example, when it is installed on the vehicle body side, the space inside the vehicle becomes narrow. When installed on a sliding door, the impact on the interior space of the vehicle can be avoided, but the workability of mounting on the sliding door becomes difficult due to interference with the elevating door glass, etc., and in the case of a small and thin sliding door , A more remarkable problem of mounting workability arises, and it becomes more difficult to secure a mounting place.

Patent Document 3 describes a power slide device in which a pair of wire drums are divided and formed, and each end of a pair of wire cables is connected to the pair of wire drums.

Japanese Unexamined Patent Publication No. 2015-142410 Japanese Unexamined Patent Publication No. 2018-1038887 JP-A-2007-113205

The thickness problem in the width direction of the power slide device is mainly due to the thickness in the rotation axis direction of the motor and the thickness in the rotation axis direction of the wire drum to which the end of the wire cable is connected. For example, in the configuration described in Patent Document 2, the thickness in the width direction of the power slide device is obtained by adding the thickness in the rotation axis direction of the wire drum to the thickness in the rotation axis direction of the motor from the contents of FIG. The number of sliding doors on which such a device of Patent Document 2 can be installed is limited.

Further, in the configuration of Patent Document 3, the wire drums are divided into a pair and formed, but these wire drums are axially fixed to the same axis and overlap each other. Therefore, the thickness in the rotation axis direction is thicker than the thickness of the conventional single wire drum (FIGS. 5 to 7 of Patent Document 3 are developed views, and the two wire drums are the same as shown in FIG. 4). Supported by the shaft).

Therefore, the present invention comprises a slide door 11 slidably attached to the vehicle body 10 in the closing and opening directions, a wire cable provided between the slide door 11 and the vehicle body 10, and the wire cable. In a power slide device having a power unit 20 that slides the slide door 11 in the door closing direction and the door opening direction by moving the sliding door 11 by motor power, the power unit 20 is arranged in the internal space of the sliding door 11. The power unit 20 includes a motor 29, a pair of door opening drums 21A and a door closing drum 21B; the wire cable includes an opening cable 22A whose one end is connected to the door opening drum 21A and the door closing drum 21B. A door closing cable 22B to which one end is connected to the door; the door opening drum shaft 28A of the door opening drum 21A, the door closing drum shaft 28B of the door closing drum 21B, and the motor shaft 29A of the motor 29 are mutually axial cores. Different parallel axes; the door opening cable 22A extending from the door opening drum 21A and the door closing cable 22B extending from the door closing drum 21B are inside sandwiched between the door opening drum shaft 28A and the door closing drum shaft 28B. It is a configuration of a power slide device for a vehicle slide door that extends outward from the position.

According to the first aspect of the present invention, the thickness of the power unit 20 in the width direction can be suppressed, the power unit 20 can be easily attached to the slide door 11, and the adaptability to the small and thin slide door 11 is remarkably increased. ..
In the invention according to claim 2, the power unit 20 can be fixed to the inner panel 23 from the indoor side, and the door opening cable 22A and the door closing cable 22B from the power unit 20 to the guide body 32 are attached to the outdoor side of the inner panel 23. Since it can be arranged, it is possible to improve the installation workability of the power unit 20 and the arrangement workability of the door opening cable 22A and the door closing cable 22B.

It is a side view of the slide door and the vehicle body provided with the power slide device by this invention. It is a perspective view of the indoor side of the metal inner panel of a sliding door. It is a perspective view of the indoor side of a power unit. It is a perspective view of the outdoor side of a power unit. It is a perspective view of the interior side of the internal structure of a power unit. It is a perspective view of the outdoor side of the internal structure of a power unit. It is the whole perspective view of the guide body.

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

The slide door 11 is provided with an upper roller bracket 17, a lower roller bracket 18, and a center roller bracket 19 that are slidably engaged with the upper rail 13, the lower rail 14, and the center rail 16, respectively. The three brackets 17, 18 and 19 are arranged so as to be the vertices of a triangle, whereby the slide door 11 is supported by the vehicle body 10 in a well-balanced manner to ensure the stability of slide movement, and the slide door is supported. Sufficient strength is also secured.

A power unit 20 having motor power is provided in the internal space of the slide door 11. The power unit 20 is provided with a wire drum 21 that is rotated by motor power. Two wire cables (see FIG. 2 and below) are wound around the wire drum 21, that is, an open door cable 22A that is wound when the slide door 11 is opened and moved, and a door open cable 22A that is wound when the slide door 11 is closed. One end side of the closed door cable 22B is connected to each other. When the wire drum 21 opens and rotates, the opening cable 22A is wound and the closing cable 22B is unwound, and the sliding door 11 slides open. When the wire drum 21 rotates in the closing direction, the sliding door 11 slides to close the door.

FIG. 2 shows the indoor side of the metal inner panel 23 of the slide door 11. A window opening 25 for the elevating door glass 24 (FIG. 1) is provided in the upper half of the inner panel 23, and a plurality of service holes 26 are provided in the lower half. The service hall 26 is much smaller than the window opening 25. The service hall 26 is provided at substantially similar locations, although there are slight differences depending on the vehicle.

Of the plurality of service holes 26, the power unit 20 is attached to the service hole 26A located below the rear side of the vehicle. It is desirable that the service hole 26A has a shape suitable for mounting the power unit 20, but it does not require a dedicated service hole 26A, and the power unit 20 can be fixed from the indoor side with a connecting tool such as a bolt or nut. In addition, the door opening cable 22A and the door closing cable 22B extending upward may be pulled out to the outdoor side of the inner panel 23.

3 and 4 show the appearance of the power unit 20. The first feature of the power unit 20 in the present application is that the pair of cables 22A and 22B extend upward in a substantially parallel state. Conventionally, in the power unit arranged on the back side of the quarter panel, the pair of wire cables has a structure extending from the power unit to both left and right sides, and the power unit arranged inside the slide door is a diversion of the power unit arranged in the quarter panel. Therefore, similarly, the pair of wire cables had a structure extending to both the left and right sides. Therefore, the conventional power unit is not suitable for being arranged inside the slide door 11.

The power unit 20 is surrounded by a housing 27 that can be divided as a whole. A wire drum and a speed reduction mechanism are arranged in the middle of the upper and lower parts of the power unit 20, and a motor and an ECU for control are arranged in the lower part of the power unit 20.

5 and 6 show the internal structure of the power unit 20. The first feature in the internal structure is the configuration of the wire drum 21. As shown in FIG. 6, the wire drum 21 of the present application is divided into a pair of open door drums 21A and closed door drums 21B which are axially stopped by different shafts.

The door opening drum 21A and the door closing drum 21B are pivotally fixed to the door opening drum shaft 28A and the door closing drum shaft 28B, which are arranged side by side in parallel with each other. The door opening drum 21A and the door closing drum 21B are arranged on the same rotation plane, but are separated from each other by a distance that does not overlap with each other.

The end of the door opening cable 22A is connected to the door opening drum 21A, and the end of the door closing cable 22B is connected to the door closing drum 21B. The door opening drum 21A and the door closing drum 21B are configured to rotate in the same direction. As a result, the door opening cable 22A and the door closing cable 22B connected to the door opening drum 21A and the door closing drum 21B can be extended upward from the side where the door opening drum 21A and the door closing drum 21B are close to each other. In other words, the door opening cable 22A and the door closing cable 22B extend upward from the inner position sandwiched between the door opening drum shaft 28A and the door closing drum shaft 28B.

A motor 29 is provided below the door opening drum 21A and the door closing drum 21B. The motor 29 is arranged on the same rotation plane as the door opening drum 21A and the door closing drum 21B as much as possible. A motor gear 29B is fixed to the motor shaft 29A of the motor 29. The motor gear 29B is preferably a helical gear.

The large-diameter gear 30A of the two-stage gear 30 is meshed with the motor gear 29B. The gear shaft 30B of the two-stage gear 30 is parallel to the motor shaft 29A, the door opening drum shaft 28A, and the door closing drum shaft 28B. The small diameter gear 30C of the two-stage gear 30 meshes with the door opening drum gear 31A and the door closing drum gear 31B.

The door opening drum gear 31A is rotated integrally with the door opening drum 21A, and the door closing drum gear 31B is rotated integrally with the door closing drum 21B. As a result, the rotation of the motor 29 causes the door opening drum 21A and the door closing drum 21B to rotate in the same direction at a constant speed.

As described above, in the present application, the wire drum 21 is divided into a pair of open door drums 21A and a closed door drum 21B which are axially stopped by different shafts. By dividing the wire drum, we succeeded in significantly reducing the axial thickness of the wire drum as compared with the conventional single-type wire drum.

The open door drum shaft 28A, the closed door drum shaft 28B, and the motor shaft 29A are parallel shafts having different shaft cores. Therefore, the increase in thickness due to the total thickness of the door opening drum 21A, the door closing drum 21B, and the motor 29 is suppressed.

The motor 29 of the present application is an inner rotor type, and employs a 12-pole, 8-phase, flat and thin brushless motor using a neodymium magnet. The motor 29 is provided with U-phase lines, V-phase lines, and W-phase lines (not shown) at intervals of 120 degrees.

The brushless motor 29 has a long life and mechanical efficiency by omitting the brush. Since the brushless motor 29 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 29 is thin because it does not use a brush. Since the inner rotor type motor 29 can arrange the coil on the outer peripheral side, it has excellent heat dissipation and can reduce rotational inertia. Brushless motors can be easily multi-polarized, and cogging can be reduced by making them multi-polarized.

As a brushless characteristic, the motor 29 can perform stop holding control that generates holding torque even in the stopped state. The stop holding control uses the motor 29 as a brake without a separate clutch. Therefore, the slide door 11 can be held in a stopped state, and the slide door 11 can be held even on a slope of a predetermined angle. It can be held in a stopped state. The motor 29 without a clutch contributes to the miniaturization and thinning of the power unit 20.

The motor 29 can perform step control like a stepping motor, and is excellent in controllability and rotation accuracy. Further, the motor 29 can be driven by a sine wave, and torque fluctuation can be reduced.

The stop holding control of the motor 29 can also suddenly brake the slide movement of the slide door 11. In the motor 29, 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 29, the behavior of the slide door 11 can be stabilized by taking advantage of the above characteristics. By improving controllability, low current operation becomes possible, harness diameter and fuse capacity can be reduced, and cost can be reduced.

FIG. 7 shows a guide body 32 that extends the door opening cable 22A and the door closing cable 22B extending from the power unit 20 along the center rail 16. As described above, the cables 22A and 22B extend upward on the outdoor side of the inner panel 23 of the slide door 11. The guide body 32 includes a first case 33 fixed to the slide door 11, and the first case 33 is axially fixed with the door opening pulley 34A and the door closing pulley 34B arranged in parallel in the horizontal direction.

The door opening cable 22A and the door closing cable 22B are guided by the door opening pulley 34A and the door closing pulley 34B and guided sideways in a substantially horizontal state, and are pulled out from the rear end portion of the slide door 11.

The second case 35 of the guide body 32 is preferably pivotally fixed to the center roller bracket 19. A pair of guide pulleys 36A and 36B are pivotally fixed to the second case 35. The guide pulleys 36A and 36B are double pulleys that can rotate independently. For example, the door opening cable 22A passes through the upper pulley of the guide pulley 36A and the upper pulley of the guide pulley 36B, respectively, and is the rear end of the center rail 16. The door closing cable 22B is fixed to the front end of the center rail 16 via the lower pulley of the guide pulley 36A and the lower pulley of the guide pulley 36B, respectively.

The slide door 11 of FIG. 1 is merely an example for explanation, and the power unit 20 can be easily attached to the slide door 11 of a compact car.

As described above, since the power unit 20 according to the present invention has succeeded in suppressing the thickness of the slide door 11 in the width direction as much as possible, it can be easily installed in the narrow internal space of the slide door 11 as compared with the conventional case. It can also be satisfactorily avoided from hindering the raising and lowering of the door glass 24. In addition, the possibility of dealing with sliding doors of small cars, which has been difficult in the past, is high. In addition, since the degree of freedom of the mounting location in the slide door 11 is increased, it can be expected that the slide door can be mounted on a large number of slide doors. Further, since the door opening cable 22A and the door closing cable 22B can be guided to the upper guide body 32 in a state of being arranged side by side, the arrangement can be satisfactorily performed even in the narrow internal space of the slide door 11.

10 ... Body, 11 ... Sliding door, 12 ... Doorway, 13 ... Upper rail, 14 ... Lower rail, 15 ... Quarter panel, 16 ... Center rail, 17 ... Upper roller bracket, 18 ... Lower roller bracket, 19 ... Center roller bracket, 20 ... Power unit, 21 ... Wire drum, 21A ... Door opening drum, 21B ... Door closing drum, 22A ... Door opening cable, 22B ... Door closing cable, 23 ... Inner panel, 24 ... Door glass, 25 ... Window opening, 26 ... Service hole, 26A ... Service hole, 27 ... Housing, 28A ... Door open drum shaft, 28B ... Door closed drum shaft, 29 ... Motor, 29A ... Motor shaft, 29B ... Motor gear, 30 ... Two-stage gear, 30A ... Large diameter gear , 30B ... Gear shaft, 30C ... Small diameter gear, 31A ... Door opening drum gear, 31B ... Door closing drum gear, 32 ... Guide body, 33 ... First case, 34A ... Door opening pulley, 34B ... Door closing pulley, 35 ... Second case, 36A ... Guide pulley, 36B ... Guide pulley.

Claims (2)

A slide door (11) slidably attached to the vehicle body (10) in the closing direction and the opening direction, a wire cable provided between the slide door (11) and the vehicle body (10), and the above. In a power slide device having a power unit (20) that slides the slide door (11) in the door closing direction and the door opening direction by moving a wire cable by motor power:
The power unit (20) is arranged in the internal space of the slide door (11);
The power unit (20) includes a motor (29) and a pair of open door drums (21A) and closed door drums (21B);
The wire cable includes an open door cable (22A) having one end connected to the open door drum (21A) and a closed door cable (22B) having one end connected to the closed door drum (21B);
The door opening drum shaft (28A) of the door opening drum (21A), the door closing drum shaft (28B) of the door closing drum (21B), and the motor shaft (29A) of the motor (29) have different shaft cores from each other. With parallel axes;
The door opening cable (22A) extending from the door opening drum (21A) and the door closing cable (22B) extending from the door closing drum (21B) are the door opening drum shaft (28A) and the door closing drum shaft (28B). ) And a power slide device for the vehicle slide door that extends outward from the inside position. In claim 1, the power unit (20) is fixed to the metal inner panel (23) of the slide door (11), and the slide door (11) extends upward from the power unit (20). A guide body (32) that guides the door opening cable (22A) and the door closing cable (22B) to the outside of the slide door (11) is provided, and the power unit (20) to the guide body ( The door opening cable (22A) and the door closing cable (22B) leading to 32) are power slide devices for vehicle slide doors arranged on the outdoor side of the inner panel (23).

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