JP6854310B2 - Power slide device for vehicle slide door - Google Patents

Description

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

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.

As a countermeasure, in Patent Document 2, the power slide device is arranged at an intermediate position of the lower half of the slide door, that is, at a lower quarter position. This is because the lower quadrant position is excellent in thickness.

On the other hand, the guide rail provided on the vehicle body is composed of three rails: an upper rail received on the upper part of the vehicle body, a lower rail provided on the lower part of the vehicle body, and a center rail provided on the quarter panel of the vehicle body. A wire cable drawn from the wire drum of the power slide device to the outside of the slide door is arranged along the center rail. The reason why the wire cable is run along the center rail is that the force for moving the slide door is applied to the center of the upper and lower sides of the slide door to efficiently transmit the force and stabilize the slide movement. For this reason, the conventional center rail is arranged in the center of the top and bottom of the quarter panel.

However, in Patent Document 2, the center rail is also shifted downward in accordance with the movement of the power slide device (wire drum) to the lower position of the slide door. Therefore, the stability of the slide movement of the slide door is impaired, and the support strength of the slide door may be biased.

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 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 has one end connected to the door opening drum 21A and one end to the door closing drum 21B. A door closing cable 22B to be connected is provided; 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 parallel shafts having different shaft cores from each other. The door opening cable 22A extends horizontally backward from the door opening drum 21A, and the door closing cable 22B extends horizontally rearward from the door closing drum 21B and is pulled out from the rear end of the slide door 11 to the outside of the slide door 11. It is configured with the power slide device of the vehicle slide door.

In the invention according to claim 1, since the thickness of the power unit 20 in the width direction can be suppressed, the restriction on the installation location X on the slide door 11 is greatly relaxed without causing interference with the door glass. As a result, the door opening cable 22A and the door closing cable 22B can be horizontally extended rearward.
In the inventions according to claims 2 and 3, since the door opening drum 21A and the door closing drum 21B rotate in opposite directions, a configuration suitable for horizontally extending the door opening cable 22A and the door closing cable 22B rearward is provided. Become.
In the inventions according to claims 4 and 5, the door opening cable 22A and the door closing cable 22B can be set to the same height as the center rail 16 arranged at the upper and lower intermediate positions, so that the stability of the slide door 11 is improved. The supporting strength of the slide door 11 can be maintained satisfactorily.

It is a side view of the slide door and the vehicle body provided with the power slide device by this invention. This is the indoor side of the metal inner panel of the 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. It is explanatory drawing which showed the state which extended the door opening cable and the door closing cable horizontally rearward from the power unit.

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.

The power unit 20 of the present invention is installed and fixed at a predetermined installation location X shown by a thick dotted line frame in FIG. The power unit 20 can be fixed to the inner panel 23 from the indoor side with a connecting tool such as a bolt and nut, and the door opening cable 22A and the door closing cable 22B are pulled out to the outside of the slide door 11 through the outdoor side of the inner panel 23. Is done. The door opening cable 22A and the door closing cable 22B are pulled out in the horizontal direction toward the rear of the vehicle, and the installation location X is set so as to have the same height relationship as the center rail 16. In other words, the installation location X of the power unit 20 is determined based on the center rail 16 provided between the upper and lower parts of the quarter panel 15. This is a degree of freedom in design provided by the fact that the power unit 20 of the present invention can be formed to be small and very thin.

3 and 4 show the appearance of the power unit 20. In FIGS. 3 and 4, the pair of cables 22A and 22B extending from the power unit 20 are in the horizontal direction.

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 provided in the upper part of the housing 27, and a motor and an ECU for control are arranged in the lower part of the housing 27.

5 and 6 show the internal structure of the power unit 20. A feature of 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 parallel to 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 opposite directions at a constant speed.

The door opening drum shaft 28A and the door closing drum shaft 28B are arranged side by side, but to be precise, the door opening cable 22A extending horizontally from the outer circumference of the door opening drum 21A and the door closing drum 21A are provided with some steps and intervals at the top and bottom. A step is set on the closed door cable 22B extending horizontally from the outer circumference of the 21B. This step is a very small amount, and it is sufficient that the distance between the open door cable 22A and the closed door cable 22B is maintained so as not to interfere with each other.

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 opening drum gear 31A meshes with 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. By transmitting the rotational force of the motor 29 to the door closing drum gear 31B via the door opening drum gear 31A, the door opening drum 21A and the door closing drum 21B rotate in opposite directions at a constant speed.

In FIGS. 5 and 6, when the cables 22A and 22B are oriented in the horizontal direction, the door opening drum shaft 28A is located slightly above the door closing drum shaft 28B, but this is the case of the illustrated embodiment. Therefore, it is extremely easy to change the overall design so that the closed door drum shaft 28B is above the open door drum shaft 28A, which is within the scope of the application example of the present invention.

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 fixed by different shafts. By dividing the wire drum, the thickness of the wire drum in the axial direction can be significantly shortened 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 changes the direction of the door opening cable 22A and the door closing cable 22B in the front-rear direction along the center rail 16. The cables 22A and 22B extend horizontally rearward from the power unit 20, are pulled out from the rear end of the slide door 11, and are guided to the guide body 32.

The 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 axially fixed to the 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.

FIG. 8 shows a state in which the cables 22A and 22B are placed at the same height as the center rail 16 from the power unit 20 and extend horizontally and rearward in parallel with the center rail 16. Reference numeral 37 denotes a cover that closes the wire through hole at the rear end of the slide door 11.

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 are guided to the guide body 32 in a horizontal state, it is possible to omit the relay pulley for adjusting the extending direction of the wire cable inside the slide door as in the conventional case. Become.

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 open drum gear, 31B ... Door closed drum gear, 32 ... Guide body, 35 ... Case, 36A ... Guide pulley, 36B ... Guide pulley, 37 ... Cover, X ... Installation location.

Claims (5)

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 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) extends horizontally rearward from the door opening drum (21A), and the door closing cable (22B) extends horizontally rearward from the door closing drum (21B) from the rear end of the slide door (11). A power slide device for a vehicle slide door pulled out to the outside of the slide door (11). The power slide device for a vehicle slide door according to claim 1, wherein the door opening drum (21A) and the door closing drum (21B) are rotated in opposite directions by rotation of the motor (29) in the same direction. In claim 1 or 2, the door opening drum (21A) is configured to rotate coaxially with the door opening drum gear (31A), and the door closing drum (21B) is configured to rotate coaxially with the door closing drum gear (31B). , A power slide device for a vehicle slide door in which the open door drum gear (31A) and the closed door drum gear (31B) are meshed with each other. In any one of claims 1 to 3, a center rail extending in the front-rear direction in which the slide door (11) is slidably engaged with the upper and lower intermediate positions of the quarter panel (15) of the vehicle body (10). 16) is provided, and the door opening cable (22A) and the door closing cable (22B) extend from the door opening drum (21A) and the door closing drum (21B) at the same height position as the center rail (16). Power slide device for vehicle slide doors. In any one of claims 1 to 4, the door opening cable (22A) and the door closing cable (22B) are spaced vertically and vertically from the outer periphery of the door opening drum (21A) and the door closing drum (21B). A power slide device for a vehicle slide door that is placed and extended in parallel.

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