JP5545878B2 - Power unit for power slide device - Google Patents

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, the present invention provides a metal base plate 20 fixed to the vehicle body 10 or the slide door 11, a motor 28 provided on the metal base plate 20, a drum shaft 25 provided on the metal base plate 20 and using the power of the motor 28. Is rotated between the cable drum 17 that moves the slide door 11 and a connected state in which the rotation of the motor 28 provided on the metal base plate 20 is transmitted to the cable drum 17 and a disconnected state that is not transmitted. The cable drum 17 has a cylindrical shape having a drum rim body 23 on one side surface thereof, and more than half of the electromagnetic clutch mechanism 35 is accommodated inside the outer peripheral surface thereof. In the case where the internal space 34 to be obtained is formed, the electromagnetic clutch mechanism 35 is An armature 38 that is movable in the axial direction of the ram shaft 25, a sleeve 36 that covers the outer periphery of the drum shaft 25 and is connected to the motor 28, and a flange 39 that is integrally formed at the end of the sleeve 36. And an electromagnetic coil portion 37 that draws the armature 38 along the axial direction of the drum shaft 25 and abuts against the flange 39 with a frictional resistance when turned on. The armature 38 is inserted into the drum shaft 25. always engaged constantly engaged to rotate integrally with the axially moving said Doramurimu member 23, when moving the sleeve 36 in the axial direction is inserted into the drum shaft 25 is pre-Symbol armature 38 wherein Doramurimu body 23 and the flange 39, is the armature 38 and the sleeve 36 inserted through the drum shaft 25? It is obtained by the power slide device for a power unit that can be fastened as a unit body with respect to the cable drum 17 by fixing the fastener 45.

  In the invention according to the first aspect, 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. Can be improved.

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 drum side case 22 that partitions the 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 27 fixed to the other side of the base plate 20.

  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. The worm wheel 31 disposed in the second 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, 22 ... Drum side case, 23 ... Drum rim body, 24 ... Cable groove, 25 ... Drum shaft, 26 ... Communication hole, 27 ... Gear side case, 28 ... Motor, 29 ... Cylinder worm, 30 ... second storage chamber, 31 ... worm wheel, 32 ... boss part, 33 ... annular transmission, 34 ... internal space, 35 ... electromagnetic clutch mechanism, 36 ... sleeve, 37 ... electromagnetic coil part, 38 ... an annular armature, 39 ... an annular flange, 40 ... an engagement hole, 41 ... a drum pin, 42 ... a sensor unit, 43 ... a coil, 44 ... a field, 4 ... fasteners, 46 ... screw.

Claims (3)

When the metal base plate 20 fixed to the vehicle body 10 or the slide door 11, the motor 28 provided on the metal base plate 20, and the metal base plate 20 provided on the metal base plate 20 are rotated around the drum shaft 25 by the power of the motor 28. A cable drum 17 that moves the slide door 11 and an electromagnetic clutch mechanism 35 that is provided on the metal base plate 20 and switches between a connected state in which the rotation of the motor 28 is transmitted to the cable drum 17 and a disconnected state in which the rotation is not transmitted. The cable drum 17 has a cylindrical shape having a drum rim body 23 on one side surface thereof, and an inner space 34 in which more than half of the electromagnetic clutch mechanism 35 can be accommodated inside the outer peripheral surface. In the formed structure, the electromagnetic clutch mechanism 35 is a shaft of the drum shaft 25. An armature 38 that is movable in the direction, a sleeve 36 that covers the outer periphery of the drum shaft 25 and is connected to the motor 28 side, and a flange 39 that is integrally formed at the end of the sleeve 36. And an electromagnetic coil portion 37 that draws the armature 38 along the axial direction of the drum shaft 25 and abuts against the flange 39 with a frictional resistance. The armature 38 is inserted into the drum shaft 25 in the axial direction. always causes moved to the Doramurimu member 23 engages constantly engaged to rotate integrally, wherein the moving axially inserting the sleeve 36 to the drum shaft 25 is pre-Symbol armature 38 and the Doramurimu body 23 flange 39 The armature 38 and the sleeve 36 are inserted into the drum shaft 25 and then fastened by a fastener 45. Powered sliding device for a power unit that can be fastened as a unit body with respect to the cable drum 17 by fixing.   The power unit for a power slide device according to claim 1, wherein the electromagnetic coil portion 37 is fixed to the base plate 20 by a screw 46.   The power unit for a power slide device according to claim 2, wherein the electromagnetic coil portion 37 is disposed on an outer peripheral portion of the sleeve 36.

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