JP2011106270A - Power unit for power sliding device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To rationally constitute a power unit equipped with an electromagnetic clutch mechanism. <P>SOLUTION: In the power unit for a power sliding device: a one-side case 22 for partitioning a one-side storage chamber 21 is fixed to one side of a base plate 20; the other-side case 27 for partitioning the other-side storage chamber 30 is fixed to the other side of the base plate 20; a cable drum 17 which has a door-opening cable 18 and a door-closing cable 19 wounded around the outer peripheral portion and is rotated by the power of a motor 28 is housed in the one-side storage chamber 21; a gear 31 for the deceleration of the motor 28 is housed in the other-side storage chamber 30; and the base plate 20 is fixed to a vehicle body 10 or a sliding door 11. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a power slide device for a vehicle slide door, and more particularly to an improvement of a power unit of the power slide device.

  Conventionally, a metal base plate that is fixed to a vehicle body or a sliding door, a motor that is provided with the base plate, a cable drum that is provided on the base plate and around which an opening cable and a closing cable are wound, and the base plate Many power slide device power units have been proposed that have an electromagnetic clutch mechanism that switches between a connected state in which rotation of the motor is transmitted to the cable drum and a non-connected state in which the rotation of the motor is not transmitted.

Japanese Patent Laid-Open No. 2005-83170 JP 2000-177391 A

  Since the conventional power unit has an output sufficient to smoothly slide the sliding door, the power unit is quite heavy, and the metal base plate that supports the heavy power unit has a heavy structure. In addition, heavy power units tend to vibrate when the vehicle travels, and this vibration can cause unexpected metal fatigue on the base plate. For this reason, the conventional base plate is subjected to many reinforcements and tends to be heavier.

  Therefore, the present invention reduces the vibration of the power unit itself by reducing the weight difference between both sides of the base plate, thereby preventing the base plate from being weighted and suppressing the occurrence of metal fatigue of the base plate. is there.

  Therefore, in the present invention, the one side case 22 defining the one side storage chamber 21 is fixed to one side of the base plate 20, and the other side case 27 defining the other side storage chamber 30 is fixed to the other side of the base plate 20. A cable drum 17 that is wound around an outer peripheral portion of the one-side storage chamber 21 with a door opening cable 18 and a door-closing cable 19 and is rotated by the power of a motor 28 is stored. The power gear 31 is housed, and the base plate 20 is a power unit for a power slide device fixed to the vehicle body 10 or the slide door 11.

In the present invention, since the electromagnetic coil portion 37 and the motor, which are two heavy objects of the power unit 16, are arranged separately on both sides of the metal base plate 20, the center of gravity of the power unit 16 is located near the base plate 20. Accordingly, the vibration of the power unit 16 during traveling of the vehicle can be reduced, and the weight of the base plate can be prevented.
In the present invention, the electromagnetic coil portion 37, which is a heavy object, is fixed to the metal base plate 20, so that the distance between the electromagnetic coil portion 37 and the metal base plate 20 is shortened by external force (vibration) during vehicle travel. The generated moment of inertia can be reduced, and the operating heat of the electromagnetic coil part 37 can be satisfactorily transmitted to the metal base plate 20, so that the metal base plate 20 can also be used as a heat sink for the electromagnetic coil part 37.
In the present invention, since the metal base plate 20 is disposed between the sensor unit 42 and the electromagnetic coil portion 37, it can also be used as a magnetic shield for protecting the sensor unit 42 from the magnetic field of the metal base plate 20 electromagnetic coil portion 37.
In the present invention, the electromagnetic coil portion 37 is fixed to the metal base plate 20 that can be used as a heat sink, and the operation efficiency is not reduced by heat generation. Therefore, the electromagnetic coil portion 37 is stored in the internal space 34 of the cable drum 17. Therefore, the power unit 16 can be formed compactly. Further, since the electromagnetic coil portion 37 is housed in the inner space 34 of the cable drum 17, the axial direction of the drum shaft 25 can be made compact. Even if the shape of the narrow inner space of the quarter panel is different on the left and right, it can be easily handled and used as a power slide device for both left and right.

The side view which shows the relationship between a vehicle body, a sliding door, and a power unit. The side view of the said power unit. Sectional drawing of the said power unit. The expanded sectional view of the power unit.

  An embodiment of 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 a door opening 12 that can be closed by the slide door 11. The vehicle body 10 is provided with a plurality of guide rails 14 slidably engaged with a plurality of guide rollers 13 provided on the slide door 11, and the slide door 11 is engaged by the engagement of the guide rollers 13 and the guide rail 14. It is slidably attached to the vehicle body 10.

  A power unit 16 of a power slide device is provided in the vehicle interior space of the quarter panel 15 of the vehicle body 10. As shown in FIGS. 2 and 3, the power unit 16 is provided with a cable drum 17, and the cable drum 17 is connected to the base end side of the door opening cable 18 and the door closing cable 19. The distal ends of the cables 18 and 19 are respectively connected to the slide door 11, and when the cable drum 17 rotates in the door opening direction, the door opening cable 18 is wound and the door closing cable 19 is pulled out to open the slide door 11. When the cable drum 17 moves in the door direction and the cable drum 17 rotates in the door closing direction, the door opening cable 18 is pulled out, the door closing cable 19 is wound up, and the slide door 11 moves in the door closing direction.

  The arrangement position of the power unit 16 is not limited to the vehicle interior space of the quarter panel 15 and may be arranged in the internal space of the slide door 11 as described in detail in Japanese Patent Application Laid-Open No. 2004-36193. In this case, the distal ends of the cables 18 and 19 are connected to the vehicle body 10, respectively.

  As shown in FIG. 3, the power unit 16 includes a vertical metal base plate 20 that is fixed to the vehicle body 10 (or the slide door 11) with a bolt or the like, and a first storage is provided on one side of the base plate 20. A resin-made drum-side case (one-side case) 22 that partitions the chamber (one-side storage chamber) 21 is fixed, and the cable drum 17 is stored in the first storage chamber 21.

  The cable drum 17 has a cylindrical shape with a drum rim body 23 on one side surface thereof, and the other side of the drum 17 is open to the outside. A cable groove 24 around which the cables 18 and 19 are wound is formed on the outer peripheral surface of the cable drum 17. The cable drum 17 is made of resin, and a drum shaft 25 is integrally formed at the center thereof, and one end portion of the drum shaft 25 protrudes outward from the drum rim body 23 and can freely rotate to the drum side case 22. To support. The other end portion of the drum shaft 25 protrudes to the other side through the communication hole 26 of the base plate 20 and is rotatably supported by a gear side case (other side case) 27 fixed to the other side of the base plate 20. Let

  A forward / reverse motor 28 of the power unit 16 is disposed on the other side of the base plate 20. A cylindrical worm 29 is attached to the output shaft of the motor 28, and the cylindrical worm 29 is partitioned by the gear side case 27. A worm wheel (deceleration gear) 31 disposed in the second storage chamber (the other storage chamber) 30 is engaged. The worm wheel 31 is rotatably supported by a boss portion 32 formed on the inner surface of the gear side case 27 so that its axis coincides with the axis of the drum shaft 25. An annular transmission 33 that rotates integrally with the worm wheel 31 is disposed near one side of the worm wheel 31.

  A main part of the electromagnetic clutch mechanism 35 of the power unit 16 is disposed in an internal space 34 surrounded by the outer peripheral surface of the cable drum 17. When the clutch mechanism 35 is switched to the connected state, the rotation of the worm wheel 31 (annular transmission 33) is transmitted to the cable drum 17, but when the clutch mechanism 35 returns to the non-connected state, the cable drum 17 is connected to the worm wheel 31 (motor 28). Is released, and the cable drum 17 can be freely rotated with respect to the worm wheel 31.

  The electromagnetic clutch mechanism 35 includes a relatively long sleeve 36 disposed on the outer periphery of the center portion of the drum shaft 25, an annular electromagnetic coil portion 37 disposed on the outer periphery of the sleeve 36, and the drum rim body 23. And an annular armature 38 disposed in the vicinity of the inner surface.

  The sleeve 36 is fixed to the drum shaft 25 by a fastener 45 such as an E-ring and does not move in the axial direction of the drum shaft 25, but is relatively rotatable with respect to the drum shaft 25. The other end of the sleeve 36 is engaged with the annular transmission 33 through a keyway, whereby the sleeve 36 is always connected to the motor 28 via the annular transmission 33 and the worm wheel 31.

  The electromagnetic coil portion 37 is disposed on the outer peripheral portion of the sleeve 36, and the field 44 on the outer periphery of the coil 43 is fixed to one side surface of the base plate 20 with a screw 46 or the like. The communication hole 26 of the base plate 20 is sized to allow the sleeve 36 to pass therethrough, and the metal base plate 20 is arranged as wide as possible on the other side surface of the electromagnetic coil portion 37. As a result, the metal base plate 20 acts as a magnetic shield against the magnetic force generated by the electromagnetic coil unit 37, and the magnetic field of the electromagnetic coil unit 37 can be greatly reduced from reaching the other side of the base plate 20.

  An annular flange 39 is integrally formed at one end portion of the sleeve 36, and the annular flange 39 is disposed between the armature 38 and the electromagnetic coil portion 37 in the axial direction of the drum shaft 25. . One side surface of the annular flange 39 is formed as a contact surface having a high friction coefficient, and when the armature 38 is drawn to the other side by the magnetic force of the electromagnetic coil portion 37, the armature 38 has a high friction coefficient with respect to the annular flange 39. And the rotation of the annular flange 39 is transmitted to the armature 38.

  A plurality of engagement holes 40 in the axial direction of the drum shaft 25 are formed in the armature 38, and a plurality of drum pins 41 protruding from the drum rim body 23 to the other side are slidably engaged in the engagement holes 40. . The engagement between the drum pin 41 and the engagement hole 40 is not released even when the armature 38 moves in the axial direction of the drum shaft 25 by the magnetic force of the electromagnetic coil portion 37, and therefore the armature 38 is always in contact with the cable drum 17. When the armature 38 is connected so as to rotate integrally, and the armature 38 is in close contact with the flange 39 by the magnetic force of the electromagnetic coil portion 37, the clutch mechanism 35 is connected, and the power of the motor 28 is transmitted to the cable drum 17, and the electromagnetic coil When the portion 37 is turned off, the frictional contact between the armature 38 and the flange 39 is released, the clutch mechanism 35 is disconnected, and the connection between the motor 28 and the cable drum 17 is released.

  The other end portion of the drum shaft 25 protrudes outward from the other side beyond the gear side case 27, and the rotation speed, rotation direction, and rotation amount of the drum shaft 25 (cable drum 17) are measured on the protruding portion. A sensor unit 42 is attached. The sensor unit 42 is preferably a magnetic sensor composed of a magnet and a Hall IC. However, since the magnetic field of the electromagnetic coil unit 37 that adversely affects the sensor unit 42 is significantly shielded from the base plate 20, The unit 42 does not need to be specially spaced from the electromagnetic coil portion 37, and therefore, the amount of protrusion of the drum shaft 25 to the other side can be shortened.

  Therefore, in the present invention, the armature 38 that rotates integrally with the cable drum 17 is disposed close to the other side surface of the drum rim body 23. For this reason, the side space of the drum rim body 23 can be used effectively, and the armature 38 and the cable drum 17 can be connected with a simple configuration such as the engagement hole 40 and the drum pin 41. Further, since the armature 38 can be connected to the cable drum 17 without using the drum shaft 25, the processing for connecting the armature 38 to the drum shaft 25 becomes unnecessary, and the strength of the drum shaft 25 is reduced by this processing. Therefore, the drum shaft 25 can be formed of resin integrally with the cable drum 25.

  In the present invention, the armature 38, the flange 39, and the electromagnetic coil portion 37 are arranged in order from the drum rim body 23 to the other side. For this reason, the electromagnetic clutch mechanism 35 can be formed compactly, and the electromagnetic clutch mechanism 35 can be substantially housed in the internal space 34 of the cylindrical cable drum 17.

  The sleeve 36 that connects the annular flange 39 to the motor 28 side extends from the worm wheel 31 (annular transmission body 33) to one side (drum side). Therefore, a mechanism for transmitting the power of the motor 28 to the cable drum 17 can be provided only on one side of the worm wheel 31 (annular transmission body 33), and the axial direction of the drum shaft 25 can be made compact.

  In the present invention, the power of the motor 28 is transmitted to the cable drum 17 without passing through the drum shaft 25. For this reason, since the load on the drum shaft 25 is further reduced, the strength required for the drum shaft 25 is further reduced, and the drum shaft 25 and the cylindrical cable drum 17 can be easily formed integrally.

  In the present invention, the armature 38 is placed on the bottom of the cable drum 17, and then the sleeve 36 is put on the outer periphery of the drum shaft 25, and then the sleeve 36 is fastened to the drum shaft 25 by the fastener 45. The cable drum 17, the armature 38, and the sleeve 36 can be easily assembled, and these assembled components can be used as a unit body that is not easily separated, so that the assembly process can be further improved.

  Thus, in the present invention, the electromagnetic coil portion 37 is disposed on one side of the metal base plate 20 fixed to the vehicle body 10 or the slide door 11 with bolts or the like, and the motor 28 is disposed on the other side. Thereby, the weight imbalance between the one side and the other side of the base plate 20 can be reduced, and the metal fatigue applied to the metal base plate 20 due to vibration during vehicle travel can be reduced. Since the heavy objects are distributed on one side and the other side of the base plate 20, the center of gravity of the power unit 16 can be brought close to the vicinity of the base plate 20 in the axial direction of the drum shaft 25. The difference in thickness between one side and the other side of the power unit 20 is also reduced, so that the power unit 16 can freely perform upside down arrangement, left and right inversion arrangement, front and back inversion arrangement, and the layout according to the shape of the installation space Excellent in properties.

  In the present invention, the electromagnetic coil portion 37 is directly fixed to the metal base plate 20. Thereby, the base plate 20 can be used for the heat sink of the electromagnetic coil part 37, and the capability fall by the heat_generation | fever of the electromagnetic coil part 37 can be reduced.

  In the present invention, the electromagnetic coil portion 37 is provided on one side of the metal base plate 20, and the sensor unit 42 for detecting the rotation of the cable drum 17 is arranged on the other side of the base plate. Thereby, the base plate 20 acts as a blocking wall against the magnetic field generated by the electromagnetic coil unit 37, and the influence of the magnetic field received by the sensor unit 42 can be reduced.

  DESCRIPTION OF SYMBOLS 10 ... Car body, 11 ... Sliding door, 12 ... Door opening, 13 ... Guide roller, 14 ... Guide rail, 15 ... Quarter panel, 16 ... Power unit, 17 ... Wire drum, 18 ... Opening cable, 19 ... For closing door Cable, 20 ... base plate, 21 ... first storage chamber (one side storage chamber), 22 ... drum side case (one side case), 23 ... drum rim body, 24 ... cable groove, 25 ... drum shaft, 26 ... communication hole, 27 ... Gear side case (other side case), 28 ... Motor, 29 ... Cylinder worm, 30 ... Second storage chamber (other side storage chamber), 31 ... Warm wheel (deceleration gear), 32 ... Boss portion, 33 ... Annular transmission body 34 ... internal space 35 ... electromagnetic clutch mechanism 36 ... sleeve 37 ... electromagnetic coil part 38 ... annular armature 39 ... annular flange 40 ... engagement hole 41 ... Doramupin, 42 ... sensor unit, 43 ... coil, 44 ... field, 45 ... fasteners 46 ... screw.

Claims (13)

  One side case 22 defining one side storage chamber 21 is fixed to one side of the base plate 20, and the other side case 27 defining the other side storage chamber 30 is fixed to the other side of the base plate 20, and the one side storage chamber A cable drum 17 that is wound around the outer periphery by the opening cable 18 and the closing cable 19 and is rotated by the power of the motor 28 is housed, and the speed reduction gear 31 of the motor 28 is housed in the other storage chamber 30. The base plate 20 is a power unit for a power slide device fixed to the vehicle body 10 or the slide door 11.   The power unit for a power slide device according to claim 1, wherein the electromagnetic coil portion 37 of the electromagnetic clutch mechanism 35 is fixed to the base plate 20.   The power unit for a power slide device according to claim 1 or 2, wherein the electromagnetic coil portion 37 of the electromagnetic clutch mechanism 35 is disposed on one side of the base plate 20 and the motor 28 is disposed on the other side of the base plate 20.   3. The power unit for a power slide device according to claim 1, wherein the electromagnetic coil portion 37 of the electromagnetic clutch mechanism 35 is disposed on one side of the base plate 20, and the output shaft of the motor 28 is disposed on the other side of the base plate 20.   5. The drum shaft 25 according to claim 1, wherein one end of the drum shaft 25 of the cable drum 17 is rotatably supported by the one case 22, and the other end of the drum shaft 25 is the other end. A power unit for a power slide device that is rotatably supported by the side case 27.   6. The base plate 20 according to claim 1, wherein the base plate 20 is disposed between the electromagnetic coil portion 37 of the electromagnetic clutch mechanism 35 and the output shaft of the motor 28 in the axial direction of the drum shaft 25 of the cable drum 17. The power unit for the power slide device.   The power unit for a power slide device according to any one of claims 1 to 6, wherein a center of gravity of the power unit is arranged in the vicinity of the base plate 20 in the axial direction of the drum shaft 25 of the cable drum 17.   The power unit for a power slide device according to any one of claims 1 to 7, wherein a drum shaft 25 is integrally formed with the cable drum 17.   9. The power unit for a power slide device according to claim 1, wherein the cable drum 17 has a cylindrical shape having an internal space 34, and the electromagnetic coil portion 37 is disposed in the internal space 34.   The power unit for a power slide device according to any one of claims 1 to 9, wherein the power unit can be arranged upside down, upside down, or upside down.   11. The power unit for a power slide device according to claim 1, wherein the power unit can be attached to either the right quarter panel 15 or the left quarter panel 15 of the vehicle body 10.   11. The left and right shared attachment according to any one of claims 1 to 10, wherein the power unit can be attached to either the slide door 11 attached to the right side of the vehicle body 10 or the slide door 11 attached to the left side of the vehicle body 10. Power unit for power slide device.   The power unit for a power slide device according to any one of claims 1 to 12, wherein the base plate 20 is made of metal that can also be used as a heat sink and / or a magnetic shield of the electromagnetic clutch mechanism 35.

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