JP3399720B2 - Opening / closing drive for automatic sliding door of vehicle - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for opening and closing an automatic sliding door of a vehicle. 2. Description of the Related Art Conventionally, Japanese Patent Publication No. Hei 5-61432 discloses a front-rear guide rail a (the cross-sectional structure of a guide rail is the same as that shown in FIG. 3) mounted on a side surface of a vehicle body as shown in FIG.
A bracket c having an automatic sliding door b attached to the guide rail a is slidably fitted to the bracket c.
Travels on the guide rail a by the endlessly wound wire cable e traveling by the driving mechanism d,
This document describes that the automatic sliding door b is opened and closed. [0003] Of the above known devices,
One problem is that the wire cable e uses a cable conduit (outer guide tube) f. The use of the cable conduit f has the advantage that the wire cable e inside the vehicle can be guided in a curved shape, the advantage that guide wheels are not required at both ends of the guide rail a, but the problem that the cost is unexpectedly high. There is a problem that it is difficult to install inside. In view of the above, the present invention has a structure in which the outside of the vehicle does not use the cable conduit f so as to be easily mounted in a vehicle wall having a small width, and has devised a drive mechanism therefor. An object of the present invention is to develop a drive device for opening and closing a vehicle automatic sliding door. [0005] Thus SUMMARY OF THE INVENTION The present invention includes a guide rail 1 front-rear direction of the mounted near the entrance 2 side side of the outer plate 4 of the car body, along with the guide rail 1 A bracket 7 on which a sliding door 6 that slides is mounted, a drive mechanism 14 provided inside the guide rail 1, and the drive mechanism 14 via the outer surface of the guide rail 1, one end of which is locked to the bracket 7. A wire cable 8 that returns to the bracket 7 through the outer surface of the guide rail 1
The driving mechanism 14 includes a driving wheel 16 for driving the wire cable 8, tension rollers 17 and 18 before and after tensioning the wire cable 8, and a tension roller 17 and 18. Front and rear guide pulleys 19, 20 located on the outside
And a forward / reverse rotation motor 15 for rotating the drive wheel 16 forward / reverse
And a clutch mechanism 24 provided between the drive wheel 16 and the forward / reverse rotation motor 15. The clutch mechanism 24 includes an oscillating body 29 that returns to the center by the elastic force of a center return spring 54, A central drive gear 25 attached to the center of the motor 29 and rotated forward and reverse by the forward / reverse rotation motor 15; a right gear 37 and a left gear 44 that are axially mounted on the rocking body 29 and mesh with the central drive gear 25;
A vertical oscillating right gear 38 coaxial with the right gear 37 and co-rotating with the right gear 37 with frictional force; and a vertical oscillating left gear 45 coaxial with the left gear 44 and co-rotating with the left gear 44 with frictional force. A right guiding gear 50 provided on a side portion of the vertical swing right gear 38 and engaged with the vertical swing right gear 38, and the vertical swing left gear 45 provided on a side portion of the vertical swing left gear 45. Engages with the left guiding gear 51 and the right guiding gear 5
0 and the lower right gear 37 and the left gear 44 provided below the left guide gear 51 are provided with the center return spring 54.
And passive gears 52 alternately engaged with each other against the elasticity of the drive wheels 16.
Is a driving device for opening and closing a vehicle automatic sliding door. The structure of an embodiment of the present invention will be described with reference to the drawings. Reference numeral 1 denotes a front-rear guide rail mounted on an outer plate of a vehicle body, and 2 denotes an entrance opening on a side surface of the vehicle body. The entrance 2 side of the guide rail 1 is curved inward to form a curved portion 3. FIG. 3 is a sectional view of the guide rail 1 taken along the line AA. Reference numeral 4 denotes an outer plate of the vehicle body, reference numeral 5 denotes a guide rail groove, and the guide rail groove 5 has a bracket 7 fixed to an end of a slide door 6. (See FIG. 4) is slidably mounted. The bracket 7 has a roller 9 that engages with the guide rail groove 5 and locking portions 10 and 10 that engage with ends of the wire cable 8. [0007] At the front and rear ends of the guide rail 1, a front guide wheel 11 and a rear guide wheel 12 are provided with vertical axes as shown in FIG. 2. Providing guide wheels at both ends of a guide rail is a common practice in the case of window regulators, but is not conventionally practiced in sliding doors. Front guide wheel 11 and rear guide wheel 1
In the vicinity of the front guide wheel 11 between the two, an intermediate guide wheel 13 for tension is provided by a vertical axis. [0008] A wire cable 8 is wound around the guide rail 1 thus formed. The wire cable 8 does not have a cable conduit (it is an outer tube), but uses only a simple wire cable 8. The wire cable 8 is formed by winding the outer surface of the guide rail 1, the front guide wheel 11, and the intermediate guide wheel 13. It extends linearly toward the rear guide wheel 12.
Rear guide wheel 12 between intermediate guide wheel 13 and rear guide wheel 12
A drive mechanism 14 for pulling the wire cable 8 in both front and rear directions is provided on the side. The driving mechanism 14 is, as shown in the side view of FIG.
A motor 15, a driving wheel 16 rotated by the motor 15, and tension rollers 17, 18 provided on both sides of the driving wheel 16.
And guide pulleys 19 and 20 provided outside the tension rollers 17 and 18. FIG. 12 is a plan view of the driving mechanism 14, and FIG.
1 is a motor room, 22 is a speed change room, and 23 is a drive room having drive wheels 16. FIG. 6 shows a transmission mechanism from the motor 15 in the motor chamber 21 to the central drive gear 25 in the transmission chamber 22.
26 is a rotating shaft of the motor 15, 27 is a worm gear fixed to the rotating shaft 26, 28 is a worm wheel meshing with the worm gear 27, and the central drive gear 25 is fixed to a shaft 35 (FIG. 11) of the worm wheel 28 . . In FIG. 13, reference numeral 24 denotes a clutch mechanism provided in the transmission chamber 22, and the clutch mechanism 24 is provided between the central drive gear 25 and the drive wheels 16. Details of the clutch mechanism 24 are described in FIGS. In FIG. 9, reference numeral 29 denotes an oscillating body of the clutch mechanism 24. The oscillating body 29 has a substantially T (or inverted T) shape as an example, and its center is connected to a fixed case 31 of the drive mechanism 14 by a shaft 30 (FIG. 11). The shaft is stopped. The rocking body 29 is, for example, a central upper arm 32 projecting above the shaft 30 portion.
And a right arm 33 protruding rightward from the shaft 30 portion, and a left arm 34 protruding leftward from the shaft 30 portion.
The shaft 35 of the worm wheel 28 protrudes through the fixed case 80 of the drive mechanism 14, and the central drive gear 25 is fixed to the protrusion. As shown in FIG. 11, in this embodiment, the shaft 35 of the central drive gear 25 and the shaft 30 of the oscillating body 29 are separate shafts, but may be a single continuous shaft. A right shaft 36 is provided at the tip of the right arm 33 of the rocking body 29, and a right gear 37 meshing with the central drive gear 25 is mounted on the right shaft 36. A vertically swinging right gear 38 is mounted on the right shaft 36 by overlapping with the right gear 37. [0013] As shown in FIG .
The boss 39 of the right gear 37 to be extended is protruded in the axial direction.
And the upper and lower swinging right gear 38 is fitted to the outer periphery of the boss 39.
Is allowed, it constituted this way, as the right gear 37 is the vertical swing right gear 38 and rotates to rotate together with the friction rotational
I do. At this time, in order to have a certain amount of frictional force, an elastic portion 41 which is always elastically attached to the boss 39 by a spring 40 is fitted into the up-and-down swing right gear 38 as shown in FIG . In the embodiment, in order to make the elastic portion 41 slide easily, a cylindrical body 42 is formed in a part of the up-and-down swing right gear 38 and a spring 40 is provided in the cylindrical body 42.
, And the elastic portion 41 is pressed by the spring 40. A left shaft 43 is provided at the tip of the left arm 34 of the rocking body 29, and a left gear 44 engaged with the central drive gear 25 is mounted on the left shaft 43. A vertically swinging left gear 45 is mounted on the left shaft 43 by overlapping with the left gear 44. The left shaft mounted on the left shaft 43
The boss 46 of the side gear 44 is formed to protrude long in the axial direction.
The upper and lower swinging left gear 45 is fitted to the outer periphery of
Thus, when the left gear 44 rotates, the up-and-down swing left gear 45 rotates together with friction rotation . 47 is a cylindrical body formed on a part of the up-and-down swing left gear 45,
Reference numeral 48 denotes a spring provided in the cylindrical body 47, and reference numeral 49 denotes an elastic portion which elastically adheres to the boss 46. A fixed case 31, 80 is provided on the side of the vertical swing right gear 38 so that the vertical swing right gear 38 is engaged.
Right guide gear 5 of an arc centered on shaft 30, fixed to
0 is provided. Similarly, a left guiding gear 51 having an arc centered on the shaft 30 is provided on a side portion of the vertically oscillating left gear 45 and is engaged with the vertically oscillating left gear 45. 52 is a passive gear provided near its lower part, 53 is its shaft, and the right gear 37 and the left gear 44 are alternately engaged with the passive gear 52 to rotate the passive gear 52 forward and backward. Reference numeral 54 denotes a center return spring,
9, the base is wound around a boss 55 provided on the central upper arm 32, and the forked end 56 grips the projection 57 at the upper end of the central upper arm 32, and then grips the engaging portion 58 of the fixed case 31 from both sides. I do. When the energization of the motor 15 is stopped, the central drive gear 25 and the gears meshing with the central drive gear 25 all stop rotating, so that the swinging body 29 does not swing, and the center return spring 54 shown in FIG. And in this position, both the left and right gears 37, 44
2 and the passive gear 52 is in a state in which it can run idle. For example, in the case of an automatic opening / closing slide door, it can be manually opened / closed. The drive wheel 16 is attached to the shaft 53 of the passive gear 52, and is driven from the guide pulley 19 via the tension roller 17 as shown in FIG.
Further, the wire cable 8 is wound from the driving wheel 16 via the tension roller 18 and the guide pulley 20. The drive cable 16 is wound around the wire cable 8 a plurality of times. 59 and 60 are swing arms, and 61 is a spring. The guide rail 1 is fixed to the outside of the side outer plate 4 in the vicinity of the entrance 2 and a front guide wheel 11 is provided inside the front end of the guide rail 1, and the rear end of the guide rail 1. The rear guide wheels 12 are disposed on the inside of the front guide wheels 11 and the intermediate guide wheels 13, respectively, and a fixed bracket is provided inside the vicinity of the front guide wheels 11 between the front guide wheels 11 and the intermediate guide wheels 13. The guide rail 1, the front guide wheel 11, the intermediate guide wheel 13, and the rear guide wheel 12 are wrapped around a mere wire cable 8 without a cable conduit, and between the intermediate guide wheel 13 and the rear guide wheel 12. Mounts the drive mechanism 14. The roller 9 of the bracket 7 is slidably engaged with the guide rail groove 5 of the guide rail 1 only slidably, and both ends of the wire cable 8 are connected to the locking portions 10 and 10 of the bracket 7.
The slide door 6 is attached to the bracket 7. In this state, the motor 15 is rotated forward to rotate the worm wheel 2 via the rotating shaft 26 and the worm gear 27.
When the wheel 8 is turned to the left, the central drive gear 25 fixed to the shaft 35 of the worm wheel 28 also turns to the left. Then, the left gear 44 constantly meshing with the center drive gear 25 is
, The boss 46 integral with the left gear 44 also turns right. Since the elastic portion 49 of the swing left gear 45 is elastically attached to the boss 46 by the elastic force of the spring 48, the swing left gear 45 is urged by the frictional force between the elastic portion 49 and the boss 46.
Turn right with 6. When the oscillating left gear 45 rotates clockwise, the oscillating left gear 45 meshes with the left guiding gear 51 fixed to the fixed cases 31 and 80.
Turns the rocking body 29 counterclockwise around the shaft 30 against the elasticity of the center return spring 54, and as shown in FIGS.
4 is lowered to mesh with the passive gear 52. Left gear 4
When the gear 4 meshes with the passive gear 52, the rocking body 29 stops without further turning left, and the passive gear 52 engages with the left gear 44 that turns right while the motor 15 continues to rotate. Turn left. When the passive gear 52 turns to the left, the shaft 53 turns to the left in FIG. 13, the driving wheel 16 fixed to the shaft 53 turns to the left, and the wire cable 8 turns to the right as a whole. While the wire 8 is being tensioned, the bracket 7 at which both ends of the wire cable 8 are locked is slid, and the slide door 6 is automatically closed. In the above case, the wire cable 8 of the embodiment of the present invention does not have a cable conduit but is merely a wire cable 8, but the guide rail 1 is in the front-rear direction, and the front guide wheel 11 and the rear guide wheel 12 on both front and rear sides are Since it is fixed on the vertical axis, it turns in a horizontal state, so that turning is smooth. Conversely, when the motor 15 is rotated in the reverse direction, the worm wheel 2 is rotated via the rotating shaft 26 and the worm gear 27.
The center drive gear 25 fixed to the shaft 35 of the worm wheel 28 is turned clockwise. Since the right gear 37 mounted on the right shaft 36 is engaged with the center drive gear 25, the right gear 37 turns left, and the boss 39 integrated with the right gear 37 also turns left. The boss 39 has an elastic portion 4 of the swinging right gear 38.
1 is attached by the elasticity of the spring 40,
The right gear 38 swings due to the frictional force between the boss 39 and the boss 40.
Turn left with. When the swing right gear 38 rotates left,
Since the oscillating right gear 38 meshes with the right guiding gear 50 fixed to the fixed case 31, the oscillating right gear 38 moves the oscillating body 29 right around the shaft 30 against the elasticity of the center return spring 54. Then, the right gear 37 is moved down to mesh with the passive gear 52. When the right gear 37 meshes with the passive gear 52, the rocking body 29 stops without being able to rotate clockwise any further, and the passive gear 52 stops rotating while the rotation of the forward / reverse rotation motor 15 continues.
It turns rightward by engagement with the right gear 37 that turns left. When the passive gear 52 turns clockwise, the shaft 53 turns clockwise, the driving wheel 16 fixed to the shaft 53 turns clockwise to rotate the wire cable 8 to the left as a whole, and tensions the wire cable 8 by the tension rollers 17 and 18. The bracket 7 on which both ends of the wire cable 8 are locked is slid while the sliding door 6 is automatically opened. [0023] According to the present invention, the front-rear direction of the guide rails mounted in the vicinity of the entrance 2 of the outer plate 4 side side of the vehicle body 1
And a sliding door 6 that slides along the guide rail 1.
, A drive mechanism 14 provided inside the guide rail 1, and the drive mechanism 1 through an outer surface of the guide rail 1 with one end locked to the bracket 7.
4, the driving mechanism 14 includes a driving wheel 16 for driving the wire cable 8, a wire wheel 8 for driving the wire cable 8, and a wire cable 8 returning to the bracket 7 through the outer surface of the guide rail 1 through the guide rail 1. Tension roller 17 before and after tensioning
18, front and rear guide pulleys 19 and 20 located outside the tension rollers 17 and 18, a forward / reverse rotation motor 15 for rotating the drive wheel 16 forward / reverse, and between the drive wheel 16 and the forward / reverse rotation motor 15. A clutch mechanism 24 is provided. The clutch mechanism 24 includes a rocking body 29 that returns to the center by the resilience of a center return spring 54, and a forward / reverse rotation motor 15 attached to the center of the rocking body 29. A central drive gear 25 that is rotated, a right gear 37 and a left gear 44 that are axially mounted on the oscillating body 29 and mesh with the central drive gear 25, are coaxial with the right gear 37, and share the friction with the right gear 37. Up and down swinging right gear 3
8 and the left gear 4 by the frictional force coaxial with the left gear 44.
4 and a right guiding gear 50 and a vertically swinging left gear 45 provided on the side of the vertically swinging right gear 38 and engaged with the vertically swinging right gear 38. A left guiding gear 51 provided on the side and engaged with the vertically swinging left gear 45; a right gear 37 and a left gear 44 provided below the right guiding gear 50 and the left guiding gear 51;
A passive gear 52 which engages alternately against the resilience of the center return spring 54, and a vehicle automatic sliding door opening / closing drive device in which the driving wheel 16 is fixed to a shaft 53 fixed to the passive gear 52; Therefore, when the forward / reverse rotation motor 15 is energized to rotate the central drive gear 25 in either the forward or reverse direction, for example, the right gear 37 axially mounted on the rocking body 29 is rotated, and the right gear 37 and the right gear 37 are rotated. By rotating the up-and-down swing right gear 38 which rotates together with the frictional force, the right gear 37 can be lowered by engagement with the right guide gear 50 and engaged with the passive gear 52. When the motor 15 is de-energized, Oscillator 29 that returns to the center by the elasticity of center return spring 54
As a result, the right gear 37 and the left gear 44 do not engage with each other, so that power transmission can be cut off and manual opening and closing can be performed.
Implementation is also easy.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram of a known example. FIG. 2 is a cross-sectional plan view of a main part. FIG. 3 is a sectional view taken along line AA. FIG. 4 is a diagram showing the relationship between a bracket and a guide rail. FIG. 5 is a side view of the drive mechanism. FIG. 6 is a diagram showing a motor and a reduction gear. FIG. 7 is a side view showing the clutch mechanism in a state where the oscillator is rotated by the power of a motor. FIG. 8 is a side view of FIG. 7 excluding an oscillating body. FIG. 9 is a side view showing the clutch mechanism when the oscillator has returned to the center position. FIG. 10 is a partially cutaway side view of a vertically swinging gear. FIG. 11 is a cross-sectional view of a transmission room. FIG. 12 is a plan view showing the appearance of a driving mechanism. FIG. 13 is an enlarged side view of the drive mechanism. FIG. 14 is a partial cross-sectional plan view of a drive mechanism. [Description of Signs] 1 ... guide rail, 2 ... doorway, 3 ... curved part, 4 ... outer plate, 5 ... guide rail groove, 6 ... slide door, 7 ... bracket, 8 ... wire cable, 9 ... roller, 10 ... Locking portion, 11: front guide wheel, 12: rear guide wheel, 13: intermediate guide wheel, 14: drive mechanism, 15: motor, 16: drive wheel, 17, 18: tension roller, 19, 20: guide pulley , 21: motor chamber, 22: transmission chamber, 23: drive chamber, 24: clutch mechanism, 25: central drive gear, 26:
Rotating shaft, 27: worm gear, 28: worm wheel, 29: rocking body, 30: shaft, 31: fixed case, 32
... Central upper arm, 33 ... Right arm, 34 ... Left arm, 35 ... Shaft, 36 ... Right shaft, 37 ... Right gear, 38 ...
Up and down swing right gear, 39 boss, 40 spring, 41 elastic part, 42 cylindrical body, 43 left shaft, 44 left gear, 45
... Up and down swinging left gear, 46. Boss, 47. Cylindrical body, 48. Spring, 49. Elastic portion, 50. Right guiding gear, 51. Left guiding gear, 52. Passive gear, 53. Shaft, 54. Spring Reference numerals 55, projection, 56, bifurcated portion, 57, projection, 58, projection, 59, right swing arm, 60, left swing arm, 61, spring, 80, fixed case.

Claims (1)

(1) A front-rear guide rail (1) mounted near an entrance (2) of an outer plate (4) on a side of a vehicle body, and a slide that slides along the guide rail (1). The bracket 7 to which the door 6 is attached, a driving mechanism 14 provided inside the guide rail 1, and one end locked to the bracket 7, passing through the driving mechanism 14 through the outer surface of the guide rail 1, and passing through the guide rail 1. In a vehicle automatic sliding door comprising a wire cable 8 returning to the bracket 7 through an outer surface of the vehicle, the drive mechanism 14 includes a drive wheel 16 for driving the wire cable 8, and tension rollers before and after tensioning the wire cable 8. 17 and 18, the front and rear guide pulleys 19 and 20 located outside the tension rollers 17 and 18, and the drive wheels 16 And a clutch mechanism 24 provided between the drive wheel 16 and the forward / reverse rotation motor 15. The clutch mechanism 24 includes an oscillating body 29 that returns to the center by the elasticity of a center return spring 54. A central drive gear 25 attached to the center of the oscillator 29 and rotated forward and reverse by the forward / reverse rotation motor 15; a right gear 37 pivotally mounted on the oscillator 29 and meshing with the central drive gear 25; A vertical swing coaxial with the right gear 37 and co-rotating with the right gear 37 with the right gear 37 and a vertical swing coaxial with the left gear 44 and co-rotating with the left gear 44 with the friction force. A left guiding gear 45, a right guiding gear 50 provided on a side of the vertically oscillating right gear 38 and engaged with the vertically oscillating right gear 38, and a vertically oscillating provided on a side of the vertically oscillating left gear 45. Movement A left induction gear 51 the gear 45 is engaged,
The right guide gear 50 and a passive gear 52 provided below the left guide gear 51, wherein the right gear 37 and the left gear 44 alternately engage with each other against the elasticity of the center return spring 54, A drive device for opening and closing a vehicle automatic sliding door in which the driving wheel 16 is fixed to a shaft 53 fixed to a passive gear 52.