JP2011012813A - Drive unit for opening and closing body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drive unit for an opening and closing body having structure facilitating size reduction at least in a relation among a clutch mechanism, an output drum and a speed-reduction mechanism.SOLUTION: In the drive unit for the opening and closing body, a housing 5 forms a storage space 100 for storing the output drum 8, the speed-reduction mechanism 6 and the clutch mechanism 7, the clutch mechanism 7 is provided adjacently to the output drum 8, so as to be stored in an inner diameter side of the output drum 8, and a partitioning member 50 is provided to partition the storage space 100 into an output drum 8 and clutch mechanism 7 side, and a speed-reduction mechanism 6 side.

Description

  The present invention relates to a drive device that opens and closes an opening / closing body provided on a vehicle or the like so as to be opened and closed.

  As a conventional driving device for this type of opening and closing body, a device described in Patent Document 1 described below is known. This opening / closing body driving device is a device for driving a door (opening / closing body) that opens and closes an entrance / exit formed in a side body of a vehicle, and is rotatably supported by a housing and a rotation shaft via a rotating shaft. And a substantially cylindrical output drum in which a cable for transmitting a driving force to the door is locked to the outer peripheral surface, a motor for generating a driving force, and a driving force from the motor is input via a speed reduction mechanism. A clutch mechanism that is switched between a connected state in which the driving force is transmitted to the output drum and a disconnected state in which the driving force is not transmitted to the output drum.

JP 2002-327576 A (refer to pages 3 to 5 and FIG. 5)

  In the above drive device, the output drum, the speed reduction mechanism, and the clutch mechanism are provided coaxially on the rotating shaft, and the speed reduction mechanism is positioned between the output drum and the clutch mechanism. In other words, the clutch mechanism that selectively connects and disconnects the driving force in conjunction with each other and the output drum are disposed separately via the speed reduction mechanism, and is a preferable structure for reducing the size of the driving device. It was hard to say.

Therefore, the present invention has been made in view of the above problems, and it is an object of the present invention to provide a drive device for an opening / closing body having a structure that can be easily miniaturized in relation to at least a clutch mechanism, an output drum, and a speed reduction mechanism. And

In order to solve the above-described problem, in the invention described in claim 1, a housing and a transmission member that is rotatably supported by the housing via a rotation shaft and that transmits a driving force to the opening / closing body are provided on the outer peripheral surface. The substantially cylindrical output drum to be locked and the connection state and the friction engagement in which the driving force from the driving source is input via the speed reduction mechanism and the driving force is transmitted to the output drum by the friction engagement. A clutch mechanism that is switched to a shut-off state in which the driving force is not transmitted to the output drum by releasing the motor, and the output drum, the speed reduction mechanism, and the clutch mechanism are driven coaxially on the rotating shaft. in the device, wherein the housing, prior SL output drum to form an accommodation space for accommodating the reduction mechanism and the clutch mechanism, the clutch mechanism, the output drum so as to be accommodated in the inner diameter side of the output drum It provided in contact, and the housing space the output drum and the clutch mechanism side, is summarized as further comprising a partition member for dividing the said speed reduction mechanism side.

In order to solve the above-mentioned problem, in the invention according to claim 2, a casing and a transmission member that is rotatably supported by the casing via a rotation shaft and transmits a driving force to the opening / closing body are provided on the outer peripheral surface. The substantially cylindrical output drum to be locked and the connection state and the friction engagement in which the driving force from the driving source is input via the speed reduction mechanism and the driving force is transmitted to the output drum by the friction engagement. A clutch mechanism that is switched to a shut-off state in which the driving force is not transmitted to the output drum by releasing the motor, and the output drum, the speed reduction mechanism, and the clutch mechanism are driven coaxially on the rotating shaft. In the apparatus, the casing includes the output drum, the speed reduction mechanism, and the clutch mechanism, and includes a partition member that forms a storage space through which the rotation shaft passes and divides the storage space. Above Provided in the housing space on one end side of the rotating shaft, the clutch mechanism is adjacent to the output drum so as to be housed on the inner diameter side of the output drum, and the housing space on the one end side of the rotating shaft. The decelerating mechanism is provided in the housing space on the other end side of the rotating shaft .

According to a third aspect of the present invention, in the opening / closing body driving device according to the first or second aspect, the rotating shaft is inserted through the section member.
According to a fourth aspect of the present invention, in the opening / closing body driving device according to any one of the first to third aspects, the clutch mechanism is fixed to the partition member and is a substantially cylindrical core to which a coil is attached. And a rotor that is linked to the speed reduction mechanism, is rotatable about the rotation axis by a driving force from a drive source, is linked to the output drum and is movable in the direction of the rotation axis, and is connected to the coil. And an armature that frictionally engages with the rotor by power supply and releases the frictional engagement with the rotor by stopping power supply to the coil.

According to the first or second aspect of the invention, the clutch mechanism is provided adjacent to the output drum so as to be accommodated on the inner diameter side of the output drum. The space required for the arrangement can be efficiently provided in the axial direction of the rotating shaft, and at least in the relationship with the clutch mechanism, the output drum, and the speed reduction mechanism, the drive device can be easily downsized. Yes.

It is a side view which shows the state with which the drive device which concerns on this invention was mounted | worn with the sliding door of the vehicle. It is AA sectional drawing in FIG. It is sectional drawing of the drive device in 1st Embodiment of this invention. It is sectional drawing of the drive device in 2nd Embodiment of this invention. It is sectional drawing of the drive device in 3rd Embodiment of this invention.

  The best mode for carrying out the present invention will be described below with reference to the drawings. This embodiment demonstrates the case where the drive device of the opening / closing body which concerns on this invention is applied as a drive device of the slide door which opens and closes the entrance / exit formed in the side part body of a vehicle.

(First embodiment)
As shown in FIGS. 1 and 2, the sliding door 1 (opening / closing body) of the vehicle is similar to a known configuration, and is mounted so as to open and close with respect to the entrance 11 formed in the side body 10 of the vehicle. ing. A center guide rail 12 and a pair of upper and lower upper and lower guide rails 13 and 14 are attached to the side body 10 so as to extend in the front-rear direction (the left-right direction in FIG. 1). , 14 is slidably supported along the position 14, and the posture is maintained.

  Further, as shown in FIGS. 1 and 2, the opening / closing device 3 serving as an operating mechanism of the slide door 1 has a drive device 4 attached to the slide door 1 together with the guide rails 12, 13, and 14. A cable 31 (transmission member) composed of two wires 31a and 31b wound or sent out by the drive device 4 is provided. A pulley mechanism 32 including a pair of pulleys 32 a and 32 b is arranged to link the slide door 1 and the center guide rail 12 together. Each wire 31a, 31b is wound at one end thereof by being locked to a drive drum 51 (FIG. 3) described later of the drive device 4, and the other end is guided by the pulley mechanism 32 and routed in the center guide rail 12. The center guide rail 12 is locked to the side body 10 in the vicinity of the front end in the vehicle longitudinal direction. The other end of the wire 31b is guided by the pulley mechanism 32 and routed in the center guide rail 22, and is locked to the rear end of the center guide rail 22 in the vehicle front-rear direction.

  Next, the drive device 4 according to the present invention will be described with reference to FIG.

  The drive device 4 includes a housing 5 (housing), a speed reduction mechanism 6, a clutch mechanism 7, and an output drum 8. The housing 5 includes a cover 5a and a base 5b. The cover 5a is fixed to the base 5b via a fastening member (not shown). A speed reduction mechanism 6, a clutch mechanism 7 and an output drum 8, which will be described later, are accommodated in an accommodation space 100 provided by the cover 5a and the base 5b. Bearings 5c and 5d are fixed to the cover 5a and the base 5b, respectively. The housing 5 rotatably supports the rotating shaft S (rotating shaft) via these bearings 5c and 5d.

  The speed reduction mechanism 6 is a well-known mechanism including a worm gear 6a fixed to an output shaft of a motor (drive source) (not shown) and a substantially disc-shaped worm wheel gear 6b engaged with the worm gear 6a. The worm wheel gear 6b is supported by the input rotation shaft S through a cylindrical spacer sp so as to be relatively rotatable. The spacer sp is fixed to the worm wheel gear 6b, whereby the spacer sp rotates integrally with the worm wheel gear 6b.

  The clutch mechanism 7 includes a solenoid device 7a and an armature 7b. The solenoid device 7a includes a substantially cylindrical core 7c to which a coil C wound around a bobbin is attached, and a substantially disk-shaped rotor 7d provided to face the core 7c. The core 7 c made of a magnetic material is fixed to the cover 5 a of the housing 5. Similarly, the rotor 7d made of a magnetic material is fixed to the rotating shaft S, whereby the rotor 7d rotates integrally with the rotating shaft S. Further, the output drum 8 is fixed to the outer peripheral portion 7e of the rotor 7d. The output drum 8 will be described later.

  The armature 7b is a substantially disk-shaped member made of a magnetic material, and is disposed between the rotor 7d and the worm wheel gear 6b so that each surface thereof faces the rotor 7d and the worm wheel gear 6b. . The armature 7b is supported so as to be rotatable relative to the cylindrical spacer sp and to be movable in the axial direction. That is, the armature 7b is supported on the rotating shaft S through the spacer sp so as to be relatively rotatable and movable in the axial direction. Furthermore, a plurality of holes 7h are formed in the armature 7b. A plurality of protrusions 6p formed on the worm wheel gear 6b corresponding to the holes 7h are loosely inserted into the plurality of holes 7h. Thereby, the armature 7b and the worm wheel gear 6b are connected to each other through the hole 7h and the protrusion 6p, and the armature 7b rotates integrally with the worm wheel gear 6b. That is, the driving force from the driving source is input to the armature 7b via the speed reduction mechanism 6.

  When power is supplied to the coil C via a harness (not shown), a magnetic circuit is formed by the coil C, the core 7c, the rotor 7d, and the armature 7b, and an attractive force is generated between the rotor 7d and the armature 7b. By the action of this suction force, the armature 7b moves toward the rotor 7d along the axial direction of the spacer sp, and the armature 7b and the rotor 7d are frictionally engaged (connected state). In this state, the driving force from the motor input to the armature 7b via the speed reduction mechanism 6 is transmitted to the rotor 7d. On the other hand, when the power supply to the coil C is stopped, the attractive force does not act between the rotor 7d and the armature 7b, and the frictional engagement between the armature 7b and the rotor 7d is released (blocked state). In this state, the driving force from the motor input to the armature 7b via the speed reduction mechanism 6 is not transmitted to the rotor 7d.

  The output drum 8 is formed of a resin or the like and has a substantially cylindrical shape. A cable 31 (transmission member) that transmits driving force to the slide door 1 is engaged with the outer peripheral surface 8a. The output drum 8 is fixed to the outer peripheral portion 7e of the rotor 7d in the clutch mechanism 7, whereby the output drum 8 rotates integrally with the rotor 7d.

  In this embodiment, the output drum 8 is provided adjacent to the clutch mechanism 7 including the armature 7b, the core 7c, and the rotor 7d, and most of the clutch mechanism 7 is disposed on the inner diameter side of the substantially cylindrical output drum 8. Contained. Thereby, the clutch mechanism 7 and the output drum 8 are efficiently provided in the axial direction of the rotary shaft S so that the space required for the arrangement is shared.

  The output drum 8 is fixed with an annular magnet 9 magnetized so that a plurality of sets of N / S poles are alternately arranged. The rotational speed and direction of the output drum 8 can be detected by the magnet 9 and the Hall IC 10 provided in the housing 5 corresponding to the magnet 9.

  Hereinafter, other embodiments for carrying out the present invention will be described. In addition, about the site | part which has the structure and function similar to 1st Embodiment, the code | symbol same as 1st Embodiment is attached | subjected and detailed description is abbreviate | omitted.

(Second Embodiment)
The configuration of the second embodiment of the present invention will be described with reference to FIG. As shown in FIG. 4, a partition member 50 that partitions the accommodation space 100 is provided, and the rotary shaft S <b> 2 is inserted through the partition member 50. The output drum 8 and the clutch mechanism 7 are provided in the accommodation space 100 on one end side (the cover 5a side) of the rotation shaft S2, and the speed reduction mechanism 6 is accommodated on the other end side (base 5a side) of the rotation shaft S2. It is provided in the space 100. Unlike the first embodiment, the core 7 c is fixed to the partition member 50. Then, the rotating shaft S2, which is rotatably supported in the housing 5, the worm wheel gear 6b and the rotor 7d is fixed, the worm wheel gear 6b and the rotor 7d are rotated integrally with the rotating shaft S2. In this case, the driving force from the motor is input to the rotor 7d via the speed reduction mechanism 6. Further, the armature 7b is supported on the rotary shaft S2 via the spacer sp2 so as to be relatively rotatable and movable in the axial direction. A plurality of protrusions 8p formed on the output drum 8 corresponding to the holes 7h are loosely inserted into the plurality of holes 7h formed in the armature 7b. That is, the armature 7b and the output drum 8 are connected to each other through the hole 7h and the protrusion 8p, and the armature 7b rotates integrally with the output drum 8. In the second embodiment, the output drum 8 is formed to be concave along the axial direction of the rotary shaft S2, and a space is provided on the inner diameter side of the output drum 8. A clutch mechanism 7 including an armature 7b, a core 7c, and a rotor 7d is provided adjacent to the output drum 8 so as to be accommodated on the inner diameter side of the output drum 8.

(Third embodiment)
Next, the structure of 3rd Embodiment of this invention is demonstrated with reference to FIG. As shown in FIG. 5, a partition member 50 that partitions the accommodation space 100 is provided, and the rotary shaft S <b> 3 is inserted through the partition member 50. The output drum 8 and the clutch mechanism 7 are provided in the accommodation space 100 on one end side (the cover 5a side) of the rotation shaft S3, and the speed reduction mechanism 6 is accommodated on the other end side (base 5a side) of the rotation shaft S3. It is provided in the space 100. Unlike the first embodiment, the core 7 c is fixed to the partition member 50. Then, the rotation shaft S3, is journaled in the housing 5, the worm wheel gear 6b and the rotor 7d is rotatably supported via a spacer sp3. The worm wheel gear 6b and the rotor 7d are fixed to the spacer sp3, and the worm wheel gear 6b rotates integrally with the rotor 7d. In this case, the driving force from the motor is input to the rotor 7d via the speed reduction mechanism 6. Further, an armature 7b is supported on the rotary shaft S3 via a spacer sp4 so as to be relatively rotatable and movable in the axial direction. Similarly to the second embodiment, the armature 7b and the output drum 8 are connected to each other through the hole 7h and the protrusion 8p, and the armature 7b rotates integrally with the output drum 8. In the third embodiment, similarly to the second embodiment, the output drum 8 is formed to be concave along the axial direction of the rotary shaft S3, and a space is provided on the inner diameter side of the output drum 8. Yes. A clutch mechanism 7 including an armature 7b, a core 7c, and a rotor 7d is provided adjacent to the output drum 8 so as to be accommodated on the inner diameter side of the output drum 8.

  Finally, the operation of the drive device 4 configured as described above will be described in relation to the sliding operation of the sliding door 1.

  In the first embodiment of the present invention shown in FIG. 3, when the sliding door 1 is slid, power is first supplied to the coil C of the solenoid device 7a to frictionally engage the rotor 7d and the armature 7b. In this state, when driving force from the motor is input to the armature 7b via the speed reduction mechanism 6 including the worm gear 6a and the worm wheel gear 6b, the rotor 7d frictionally engaged with the armature 7b rotates integrally with the armature 7b. Along with this, the output drum 8 fixed to the outer peripheral portion 7e of the rotor 7d also rotates. By the rotation of the output drum 8, one of the two wires 31 a and 31 b of the cable 31 locked to the outer peripheral portion 8 a of the output drum 8 is wound around the output drum 8, and the other is the output drum 8. Sent out. Thereby, the sliding door 1 slides.

  On the other hand, when the sliding door 1 is manually slid, power supply to the coil C of the solenoid device 7a is stopped, and the frictional engagement between the rotor 7d and the armature 7b is released. When the sliding door 1 is manually slid in this state, the output drum 8 and the rotor 7d rotate via the cable 31 in accordance with the sliding operation of the sliding door 1, but the frictional engagement between the rotor 7d and the armature 7b is caused. Since the joint is released, the armature 7b, the worm wheel gear 6b and the worm gear 6a do not rotate. That is, the sliding door 1 slides with a light operating force without applying a load.

As described above, according to the opening / closing body drive device 4 of the present invention, the clutch mechanism 7 is provided adjacent to the output drum 8 so as to be accommodated on the inner diameter side of the output drum 8. The interlocking clutch mechanism 7 and the output drum 8 can be efficiently provided in the axial direction of the rotary shaft S so that the space required for arrangement can be shared with each other, and at least the clutch mechanism 7, the output drum 8, and the speed reduction mechanism 6 Therefore, the structure of the drive device 4 can be easily reduced.

1 Sliding door (opening / closing body)
31 Cable (Transmission member)
4 Drive device 5 Housing (housing )
6 Deceleration mechanism 7 Clutch mechanism 8 Output drum 8a Outer peripheral surface
50 division member 100 accommodation space
S2, S3 rotating shaft (rotating shaft)

Claims (4)

A housing,
A substantially cylindrical output drum that is rotatably supported by the housing via a rotation shaft, and a transmission member that transmits a driving force to the opening and closing body is locked to the outer peripheral surface;
The driving force from the driving source is input via the speed reduction mechanism, and the driving force is transmitted to the output drum by the connection state in which the driving force is transmitted to the output drum by friction engagement and the release of the friction engagement. A clutch mechanism that is switched to a shut-off state that is not performed,
In the driving device for the opening and closing body in which the output drum, the speed reduction mechanism, and the clutch mechanism are provided coaxially on the rotation shaft,
Wherein the housing, prior SL output drum, a housing space for accommodating the reduction mechanism and the clutch mechanism is formed,
The clutch mechanism is provided adjacent to the output drum so as to be accommodated on the inner diameter side of the output drum,
An opening / closing body drive device comprising: a partition member that divides the housing space into the output drum and clutch mechanism side and the speed reduction mechanism side. A housing,
A substantially cylindrical output drum that is rotatably supported by the housing via a rotation shaft, and a transmission member that transmits a driving force to the opening and closing body is locked to the outer peripheral surface;
The driving force from the driving source is input via the speed reduction mechanism, and the driving force is transmitted to the output drum by the connection state in which the driving force is transmitted to the output drum by friction engagement and the release of the friction engagement. A clutch mechanism that is switched to a shut-off state that is not performed,
In the driving device for the opening and closing body in which the output drum, the speed reduction mechanism, and the clutch mechanism are provided coaxially on the rotation shaft,
The housing houses the output drum, the speed reduction mechanism, and the clutch mechanism, and forms a housing space through which the rotating shaft passes.
A partition member for partitioning the accommodation space;
The output drum is provided in the accommodation space on one end side of the rotating shaft,
The clutch mechanism is provided in the housing space on one end side of the rotating shaft adjacent to the output drum so as to be housed on the inner diameter side of the output drum,
The drive mechanism for an opening / closing body, wherein the speed reduction mechanism is provided in the accommodation space on the other end side of the rotating shaft. In the opening / closing body drive device according to claim 1 or 2,
The rotation shaft is inserted into the section member, and the opening / closing body drive device. In the drive device of the opening-closing body as described in any one of Claims 1-3,
The clutch mechanism is fixed to the partition member, and a substantially cylindrical core to which a coil is attached;
A rotor linked to the speed reduction mechanism and rotatable about the rotation axis by a driving force from a driving source;
It is linked to the output drum so that it can rotate integrally and move in the direction of the rotation axis, frictionally engages with the rotor by supplying power to the coil, and releases frictional engagement with the rotor by stopping power supply to the coil. And an opening / closing body drive device.

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