JP3349668B2 - Power sliding device for vehicle sliding door - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power sliding device for a vehicle sliding door.

[0002]

2. Description of the Related Art A conventionally known Japanese Patent Application Laid-Open No. 9-273358 discloses a wire drum connected to a slide door which opens and closes by sliding with respect to a vehicle body via a wire cable, and a wire drum for rotating the wire drum. And a clutch mechanism provided between the wire drum and the motor. The clutch mechanism has a first connection state for transmitting the closing rotation of the motor to the wire drum, and an open state of the motor. A vehicle configured to switch using the power of the motor between a second connection state in which the door rotation is transmitted to the wire drum and a non-connection state in which the door rotation and the door rotation of the wire drum are not transmitted to the motor. A power sliding device for a sliding door is described. Further, the applicant of the present application has proposed a power sliding device for a vehicle sliding door which is an improvement of the above-mentioned known device as Japanese Patent Application No. 10-186883.

[0003]

In the device of the prior application, the width of the front end side of the guide slot formed in the guide plate is formed wider than the diameter of the slide pin slidably engaged with the guide slot. Thus, even when the motor has failed, the clutch mechanism has been improved so that the clutch mechanism can be easily manually returned to the non-coupled state. Due to the vibration applied to the vehicle body and the weight of the slide pin (the swing arm to which the slide pin is fixed), the slide pin sometimes moved inside the guide slot.

[0004]

SUMMARY OF THE INVENTION Accordingly, the present invention provides a vehicle
A wire drum 8 connected via a wire cable 9 to a slide door 2 which opens and closes by sliding movement with respect to a motor, a motor 7 for rotating the wire drum 8, the wire drum 8 and the motor 7, The clutch mechanism 15 includes a guide plate 18 that is rotated by the power of the motor 7 and a guide plate 18 that rotates by the power of the motor 7.
And guide pins 32 and 33 formed in the guide slots 32 and 33, and slide pins 30 and 31 slidably engaged with the guide slots 32 and 33. When the guide plate 18 rotates, the slide pins 30 move in the guide slots 32 and 33. , 31 slide so that the mounting shafts 28, 2
And a swing arm 26, 27 which swings around the wire drum 9 to engage and disengage with the wire drum 8. The guide slots 32, 33 are arranged around the drum shaft 12 which supports the wire drum 8. Arc-shaped inner slot 34,
35, extension slots 36, 37 connected to the ends of the inner slots 34, 35 and extending in a direction away from the drum shaft 12, and communicating with the distal ends of the extension slots 36, 37 to center around the drum shaft 12. The slide pins 30, 31 having arcuate outer slots 38, 39
Is moved into the outer slots 38, 39, the swing arms 26, 27 are configured to engage with the wire drum 8, and the distal ends of the extension slots 36, 37 have the diameters of the slide pins 30, 31. On the other hand, even if the guide plate 18 is not rotated and the swing arms 26 and 27 swing around the mounting shafts 28 and 29, the slide pins 30 and 31 are formed to be sufficiently wide. , 39 and the front ends of the extension slots 36, 37, and the swing arms 26, 27 are urged by drop prevention springs 74, 75 in a direction away from the wire drum 8. This is a power sliding device for a sliding door.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to the drawings.
In FIG. 1, reference numeral 1 denotes a vehicle body of an automobile, and 2 denotes a slide door slidably attached to the vehicle body 1.
Is opened and closed by being guided by a guide rail 65 of the vehicle body 1 and sliding substantially parallel to the side surface of the vehicle body 1. The slide door 2 is provided with a latch assembly 4 for holding the slide door 2 at a closed position (not an open position). As shown in FIG. 2, the latch assembly 4 is provided with a latch 50 which is engaged with the striker 3 fixed to the vehicle body 1.
And a ratchet 51 that engages with the latch 50. The latch 50 is urged in the clockwise direction by the elastic force of the spring 52, and the ratchet 51 is urged in the counterclockwise direction by the elasticity of the spring 53. When the sliding door 2 moves in the closing direction, the latch 50 comes into contact with the striker 3 and the ratchet 51 engages with the half-latch step 54 of the latch 50 from the open position (unlatched position) indicated by the solid line. The ratchet 51 rotates through the position to a full latch position (position indicated by a dotted line) where the ratchet 51 is engaged with the full latch step 55 of the latch 50, and when the latch 50 is in the full latch position, the sliding door 2 is completely closed. A switch 56 for detecting the position of the latch 50 is connected to the latch 50.
63 is an open handle for releasing the ratchet 51 from the latch 50; 64 is a switch for detecting the operation of the open handle 63; and 57 is a power opening device for releasing the ratchet 51 from the latch 50 by power.

Reference numeral 58 denotes a power closing device mounted inside the slide door 2, and the power of the power closing device 58 is transmitted to the latch 50 of the latch assembly 4 via a wire cable 59. Power closing device 5
Reference numeral 8 denotes a latch 5 when the slide door 2 moves in the closing direction.
When 0 is in the half-latch position, it is activated by a signal from the switch 56 to pull the wire cable 59,
The latch 50 is rotated from the half latch position to the full latch position. The configuration of the power closing device 58 and the configuration for connecting the wire cable 59 in relation to the latch 50 are as follows.
The details are omitted because they are not related to the direct gist of the present application, but as an example, JP-A-7-180417,
There is a configuration described in JP-A-7-34743.

In FIG. 1, reference numeral 5 denotes a power slide device provided inside a quarter panel (outer panel) 6 of the vehicle body 1, and the slide door 2 is driven by a motor.
In the closing and opening directions. The power slide device 5 includes a reversible motor 7 and a wire drum 8 rotated by the power of the motor 7. The wire drum 8 and the sliding door 2 are connected by a wire cable 9, and when the wire drum 8 rotates in any direction by motor power, the wire cable 9 is pulled in any direction, and the sliding door 2 is closed or closed. Slide in the opening direction.

Reference numeral 60 denotes a fully-open stopper for holding the slide door 2 at the fully-open position. Various stoppers are known, but in the present invention, a bent leaf spring or elastic rubber or a roller having spring elasticity is used. Use an elastic material. Each of these uses the elastic force to hold the slide door 2 at the fully open position, and has a simple and inexpensive structure. The fully-open stopper 60 is mounted on the vehicle body 1
Alternatively, it can be attached to any of the sliding doors 2. FIG. 1 shows a fully-open stopper 60 formed of a leaf spring disposed in a guide rail 65 of the vehicle body 1. When the slide door 2 slides in the door opening direction to a predetermined position, the stopper 60 comes into contact with a desired portion of the slide door 2. Further, when the sliding door 2 slides in the opening direction, the sliding door 2 moves over while elastically deforming the stopper 60 to reach the fully open position. Thereafter, the sliding door 2 is moved to the fully open position by the elastically restored stopper 60. Retained elastically. Note that the fully open position in the present application indicates a position between a position over the stopper 60 (a position beyond the dead center of the elastic body) and a position where the sliding door 2 slides in the opening direction and mechanically abuts. Yes, with a width X of several centimeters.

FIGS. 3 and 4 show cross sections of the wire drum 8 of the power slide device 5. The wire drum 8 includes a base plate 10 and a cover plate 11 fixed to the base plate 10 at a predetermined interval. Is supported by the drum shaft 12 in the case 61 of the power slide device 5 composed of The wire drum 8 is formed in a cylindrical shape having one closed side and the other open side, and the outer peripheral surface thereof has a wire groove 1 with which the wire cable 9 is engaged.
3 is formed. A relatively large internal space 14 is formed inside the wire drum 8, and a clutch mechanism 15 is substantially housed in the internal space 14. Clutch mechanism 15
Are connected states in which the output of the motor 7 is transmitted to the wire drum 8, unconnected states in which the rotation of the wire drum 8 is not transmitted to the motor 7, and rotation of the wire drum 8
It switches to the brake state transmitted to. These switchings will be described in detail in operation.

The end of the drum shaft 12 has the motor 7
Drive gear 1 connected to the motor via a reduction mechanism (not shown)
6 and a guide plate 18, which is fixed to the drive gear 16 by a connecting pin 17 and rotates integrally, are rotatably mounted. The guide plate 18 is the drive gear 1
6, the drive gear 16 is omitted in FIG. 4 (and a drawing similar to FIG. 4) to simplify the drawing. A spring support 19 is rotatably mounted on a part of the outer periphery of the drum shaft 12, and a disk-shaped support plate 20 is rotatably mounted on the outer periphery of the spring support 19. A spring 23 is provided between the support plate 20 and the annular flange 21 of the spring support 19 via a tray 22. The spring 23 is provided for the purpose of imparting some rotational resistance to the support plate 20.

Bosses 24 and 25 are formed on the outer periphery of the support plate 20, and swing arms 26 and 27 are respectively rotated on the bosses 24 and 25 by mounting shafts 28 and 29 parallel to the drum shaft 12. Can be mounted freely. Slide pins 30 and 31 extending in parallel with the drum shaft 12 are provided on the tip ends of the swing arms 26 and 27, respectively.
The guide plate 18 includes the slide pins 30,
A pair of guide slots 32, 33, each of which is slidably engaged with each other, are formed. Guide slot 32,
Reference numeral 33 is symmetrical as shown in FIG. 5, and has arc-shaped inner slots 34, 35 centered on the drum shaft 12 and is connected to ends of the inner slots 34, 35 and extends in a direction away from the drum shaft 12. Each of the extension slots 36 and 37 and outer slots 38 and 39 communicating with the ends of the extension slots 36 and 37 and having an arc shape centered on the drum shaft 12. Inner wall 36 of extension slot 36, 37
The distance between A, 37A and the outer walls 36B, 37B increases as the distance from the drum shaft 12 increases. Outer slot 3
8 and 39 have semicircular engagement surfaces 38A and 39A, respectively.
And the other ends are formed on contact surfaces 38B, 39B which communicate with the outer walls 36B, 37B without any step. The length of the outer slots 38 and 39 is a length necessary for manual release of the clutch mechanism 15, which will be described later, and the length in which the slide pins 30 and 31 can move in the outer slots 38 and 39 is expressed as a moving distance T. I do.

On the cylindrical inner surface (inner wall) of the wire drum 8, a plurality of projections 40 projecting toward the drum shaft 12 are formed with a certain gap Y therebetween. Clutch pawls 41 and 42 projecting in the direction away from the drum shaft 12 are formed on the distal ends of the swing arms 26 and 27. One surface of the clutch pawls 41, 42 is formed on connecting surfaces 41A, 42A substantially parallel to the radial direction of the drum shaft 12, and the other surface is formed with brake concave portions 41B, 42B. Connecting surface 41
A, 42A and width Z between brake recesses 41B, 42B
Is smaller than the gap Y, and the clutch claws 41 and 42
The swing arms 26 and 27 are attached to the mounting shaft 2 as described later.
When it swings outward (in the direction of arrow A) around 8, 29, it enters the gap Y.

FIG. 13 shows a block circuit of the present invention, wherein 45 is a control unit, 46 is a load detector for the motor 7, 47
Is a manual operation button for returning the clutch mechanism 15 from the connected state to the non-connected state, 66 is a battery mounted on the vehicle body 1, 67 is a pulse width modulation circuit for converting a power supply voltage of the battery 66 into a constant output voltage. It is.

FIGS. 14 to 18 show the clutch mechanism 15 shown in FIG.
A second embodiment in which fall prevention springs 68, 69 are attached to the swing arms 26, 27 of FIG. Fall prevention spring 68, 6
9, a boss portion 24 of the support plate 20,
25, one leg 68A, 69A of the fall prevention spring 68, 69 is engaged with the projection 70, 71 formed on the swing arm 26, 27, and the other leg of the fall prevention spring 68, 69 is engaged. The portions 68B and 69B are bent along the axial direction of the mounting shafts 28 and 29, and then engaged with the projections 72 and 73 formed on the boss portions 24 and 25 to thereby prevent the fall prevention springs 68 and 69.
Urges the swing arms 26 and 27 in the direction indicated by the arrow A. The fall prevention springs 68 and 69 allow the swing arms 26 and 2 to move when the clutch mechanism 15 described later is manually released.
7 is prevented from moving undesirably in the direction of arrow A, and details of this point will be described later, but are unnecessary for other purposes.

Guide plate 1 of the clutch mechanism 15
As shown in FIG. 19, sound-absorbing elastic cushions 74 and 75 are attached to the contact surfaces 38B and 39B.

[0016]

(Unconnected state of clutch mechanism 15) As shown in FIG. 4 showing the first embodiment or FIG. 14 showing the second embodiment, a swing arm which is supported by mounting plates 28 and 29 on a support plate 20. When the slide pins 30 and 31 of the swing arms 26 and 27 are engaged with the inner slots 34 and 35 of the guide plate 18 formed at a fixed distance from the drum shaft 12, the clutches of the swing arms 26 and 27 are engaged. The claws 41, 42
Both are separated from the projection 40 of the wire drum 8 and are not engaged. As described above, the state in which both the clutch claws 41 and 42 are separated from the projection 40 is the clutch mechanism 1.
In this state, no matter what direction the wire drum 8 rotates, the rotation is
1 and 42 (motor 7), no extra resistance is applied when manually opening and closing the slide door 2 (note that the rotation of the wire drum 8 does not affect the rotation of the guide plate 18).
Is difficult to manually open and close the slide door 2).

(Connection State of Clutch Mechanism 15) Switching of the clutch mechanism 15 to the connection state of the first embodiment will be described. 4, when the motor 7 is rotated in the door closing direction, the guide plate 18 rotates clockwise (door closing rotation). Then, since the rotation resistance is given to the support plate 20 by the elastic force of the spring 23, initially, the swing arms 26 and 27 attached to the support plate 20 do not move, but the swing arms 26 and 27 Slide pin 30,
31 moves relative to the guide slots 32, 33 of the rotating guide plate 18, and one of the slide pins 31 moves to the inner slot 35 of the guide slot 33.
Into the extension slot 37 from the other slide pin 3
0 moves only in the inner slot 34 about the drum shaft 12. Then, the one slide pin 31 is guided by the inner wall 37A of the extension slot 37 and gradually separates from the drum shaft 12, whereby the swing arm 27 is attached to the mounting shaft 2
It swings outward in the direction of arrow A around 9. When the slide pin 31 moves from the extension slot 37 to the outer slot 39, the clutch pawl 42 of the swing arm 27 projects outward and enters the gap Y between the projections 40. It engages with the engagement surface 39A of the slot 39. During this time, since the slide pin 30 of the other swing arm 26 only moves in the inner slot 34 about the drum shaft 12, the swing arm 26
It does not swing around 8. Even after the slide pin 31 is engaged with the engagement surface 39A of the outer slot 39, if the guide plate 18 continues to rotate the door with the power of the motor 7, the engagement surface 39A pushes the slide pin 31.
7 rotates clockwise around the drum shaft 12 together with the support plate 20, and as shown in FIG.
2 </ b> A engages with the protrusion 40 of the wire drum 8. Thus, the state where the coupling surface 42A of the clutch claw 42 is engaged with the projection 40 is the coupling state (first coupling state) of the clutch mechanism 15. Since the slide pin 31 is engaged with the semicircular engagement surface 39A, the swing arm 27 is not returned in the direction opposite to the arrow A. In the first connection state of FIG. 7, when the guide plate 18 further continues clockwise rotation, the clutch pawl 42 pushes the convex portion 40 of the wire drum 8 to rotate the wire drum 8 clockwise.
The wire cable 9 wound around the wire drum 8 is wound in the door closing direction, and slides the slide door 2 in the door closing direction. In FIG. 4, when the motor 7 is rotated in the door opening direction and the guide plate 18 is rotated counterclockwise (door opening rotation), the connection surface 41 </ b> A of the clutch pawl 41 of another swing arm 26 Engage the clutch mechanism 15
Becomes another connected state (second connected state, see FIG. 11),
The sliding door 2 slides in the opening direction.

The switching of the clutch mechanism 15 of the second embodiment to the connected state is exactly the same as that of the first embodiment. When the motor 7 is rotated in the door closing direction, the clutch mechanism 15 changes from the state of FIG. To the first connection state, and the motor 7
Is rotated in the door opening direction, the clutch mechanism 15 switches to the second connection state (not shown).

(Brake state of clutch mechanism 15) When the sliding door 2 is slid in the closing direction or the opening direction by the power of the motor 7, the clutch mechanism 15 is configured such that the coupling surface 42A of the clutch pawl 42 40
In the first connected state (FIGS. 7 and 14), or
The connecting surface 41A of another clutch claw 41 is the wire drum 8
11 comes into contact with the convex portion 40 of FIG. 11, the power of the motor 7 is transmitted to the wire drum 8, and the slide door 2 is moved to a predetermined position set by the motor 7 (and its speed reduction mechanism). Slide at speed. However, the motor 7
Even when sliding the slide door 2 with the power of
When a strong external force acts on the sliding door 2, the sliding door 2 tends to slide at an overspeed exceeding the predetermined speed. An example of such an external force is gravity acting on the sliding door 2 due to the inclination of the vehicle body 1. When such an external force acts on the slide door 2, the clutch mechanism 15 of the present invention switches to a brake state as described below, and prevents the overspeed of the slide door 2.

First, the switching of the clutch mechanism 15 to the brake state in the first embodiment will be described. In the first connection state in which the sliding door 2 is slid in the closing direction (FIG. 7), when an external force causing an overspeed in the closing direction acts on the sliding door 2, the wire drum connected to the sliding door 2 via the wire cable 9. 8 is a motor 7
The door rotates at a speed faster than the guide plate 18 which rotates in the door closing direction at a constant speed by the power of. Then, another convex portion 40 located immediately before the clutch pawl 42 catches up on the back side of the clutch pawl 42 and comes into contact with the brake concave portion 42B as shown in FIG. When the door is closed (clockwise), the swing arm 2
7 (and the support plate 20) are pushed by the wire drum 8 and rotate clockwise around the drum shaft 12 at the same overspeed as the wire drum 8, so that the slide pin 31 of the swing arm 27 is moved from the engagement surface 39A. Extruded. The swing arm 27 is configured such that the slide pin 31
A, even if it is pushed out of the brake arm 4
As the wire drum 8 further rotates clockwise at the overspeed, the slide pin 31 moves in the outer slot 39 because the engagement between the projection 2 and the other convex portion 40 does not cause the swing in the direction of the arrow A. As shown in FIG. 9, the outer slot 39 is in contact with the contact surface 39B. Even in this state, the swing of the swing arm 27 about the mounting shaft 29 in the direction opposite to the arrow A is still prevented by the engagement between the other protrusion 40 and the brake recess 42B. It is maintained in a state of protruding outward. In the state shown in FIG. 9, the external force causing overspeed is transmitted to the guide plate 18 via the wire drum 8 and the slide pin 31. However, the guide plate 18 is connected to the motor 7 via the speed reduction mechanism, and is substantially connected to the motor 7.
Since the sliding door 2 does not rotate at a speed equal to or higher than a predetermined speed set by the speed reduction mechanism, a brake resistance by the guide plate 18 acts on the sliding door 2, and thereafter, the sliding door 2 slides at the predetermined speed. Thus, the state in which the convex portion 40 is engaged with the brake concave portion 42B and the overspeed of the wire drum 8 is regulated is the brake state (first brake state) of the clutch mechanism 15. Similarly, when the wire drum 8 rotates at an overspeed while the wire drum 8 is rotating counterclockwise, the convex portion 40 engages with the brake concave portion 41B of another swing arm 26. Thus, the sliding speed of the sliding door 2 is kept constant. This state is
The clutch mechanism 15 enters another braking state (second braking state). Therefore, according to the clutch mechanism 15 of the present embodiment, the overspeed of the slide door 2 is instantaneously prevented even if an external force causing the overspeed acts on the slide door 2. Thus, when the power slide device 5 is operating, the clutch mechanism 15
The connection state is such that the connection surfaces 41A and 42A of the clutch claws 41 and 42 are in contact with the protrusion 40 of the wire drum 8 (FIG. 7).
Or brake projections 41B, 42B with projections 4
The sliding door 2 opens and closes at a constant speed in one of the brake states (see FIG. 9) where 0 is in contact.

The switching of the clutch mechanism 15 to the brake state of the second embodiment is the same as that of the first embodiment. In the first connection state of FIG. As shown in FIG. 16, when another protrusion 40 comes into contact with the brake recess 42 </ b> B of the clutch claw 42 and the wire drum 8 further closes (clockwise) at overspeed, the slide pin 3 of the swing arm 27 rotates.
1 is extruded from the engagement surface 39A. At this time, the swing arm 27 of the second embodiment is urged in the direction indicated by the arrow A by the elastic force of the fall prevention spring 69, but another projection 40 engages with the brake recess 42B of the swing arm 27. Therefore, the swing arm 27 does not swing in the direction opposite to the arrow A. Therefore, when the wire drum 8 further rotates clockwise at the overspeed, the slide pin 31 comes into contact with the contact surface 39B of the outer slot 39 as shown in FIG.
Switches to the first brake state.

(Elastic cushions 74, 75 of guide slots 32, 33) As described in the preceding section, when the slide door 2 is slid by the power of the motor 7, when an external force that causes overslide acts on the slide door 2, The slide pins 30, 31 are engaged with the engagement surfaces 3 of the outer slots 38, 39.
8A, 39A, and the opposite contact surfaces 38B, 3
Contact 9B. At this time, as shown in FIG.
When the elastic cushions 74 and 75 are provided on the 8B and 39B, the shock when the slide pins 30 and 31 abut on the abutting surfaces 38B and 39B can be reduced, and the generation of abnormal noise can be suppressed.
Quality is improved.

(Return from Connected State to Disconnected State by Motor 7) The clutch mechanism 15 of the present invention once rotates the motor 7 in the reverse direction for a predetermined time (predetermined amount) R before stopping the motor 7. Thereby, it is configured to return from the connected state to the non-connected state.

First, the return of the clutch mechanism 15 from the connected state to the non-connected state of the first embodiment will be described. When the guide plate 18 is rotated clockwise by the closing rotation of the motor 7 to be in the first connection state in FIG. 7, the motor 7 is once rotated reversely (door opening rotation). Then, the guide plate 18 rotates counterclockwise, and the slide pin 31 of the swing arm 27 is pulled out from the engagement surface 39A of the outer slot 39 and abuts on the opposite abutment surface 39B, as shown in FIG. Become. In this state, the brake concave portion 42B is
, The swing arm 27 can swing in the direction indicated by the arrow A.
Is rotated counterclockwise, the slide pin 31 comes into contact with the contact surface 39B.
Is guided by the outer wall 37B to the extension slot 37, the clutch pawl 42 is separated from the projection 40, and when the counterclockwise rotation of the guide plate 18 (motor 7) by a predetermined amount R is completed, the slide pin 31 4 and the clutch mechanism 15 returns to the non-coupled state. While the motor 7 is rotating in the reverse direction (door opening rotation), no substantial load is applied to the motor 7, and the load detector 46 does not respond. When returning from the second connection state to the non-connection state, the same principle can be used.

In the above description, since the power of the battery 66 supplied to the motor 7 is kept constant by the pulse width modulation circuit 67 irrespective of the load of the battery 66, it is necessary to surely rotate the motor 7 by a predetermined amount R. Can be.

Next, the return of the clutch mechanism 15 from the connected state to the non-connected state of the second embodiment will be described. First
When the motor 7 is rotated to open the door to release the connected state (FIG. 15), the guide plate 18 rotates counterclockwise, and the slide pin 31 of the swing arm 27 is
From the engagement surface 39A. Then, since the swing arm 27 is urged in the direction of the arrow A by the elastic force of the fall prevention spring 69, the slide pin 31 is guided by the inner wall 37A and returned to the extension slot 37, and the guide plate 1
When the counterclockwise rotation of the predetermined amount R of the motor 8 (motor 7) is completed,
The slide pin 31 returns to the position shown in FIG. 14, and the clutch mechanism 15 returns to the non-coupled state. As described above, there is a slight difference between the second embodiment and the first embodiment in the return from the connected state to the non-connected state, but this difference does not relate to the essence of the clutch mechanism.

(Return from the brake state to the unconnected state by the motor 7) As described above, the first connected state of the clutch mechanism 15 is achieved by rotating the guide plate 18 counterclockwise by the predetermined amount R by the motor 7. The second connection state is released by clockwise rotating the guide plate 18 by the predetermined amount R by the motor 7,
The clutch mechanism 15 returns to the non-connected state, but when releasing the first brake state or the second brake state, the clutch mechanism 15 is driven by the power of the motor 7 to release the first or second connected state, respectively, as described below. Then, the connection state is released to return to the non-connection state.

First, a description will be given of the return of the clutch mechanism 15 from the brake state to the disconnected state of the first embodiment.
When the sliding door 2 is closed to a predetermined position while the overspeed external force is applied to the sliding door 2,
As shown in FIG. 9, the clutch mechanism 15 is in the first brake state in which the protrusion 40 is engaged with the brake recess 42B. At this time, the control unit 45 determines that the clutch mechanism 15 is in the first position.
No distinction is made as to whether the door was closed in the connected state or closed in the first brake state. The control unit 45 monitors the load on the motor 7 with the load detector 46,
First, control for inverting the motor 7 from the closed rotation to the open rotation by a predetermined amount R is started. At this time, if the clutch mechanism 15 is in the first connection state, as described above, the clutch mechanism 15 is returned to the non-connection state by the rotation of the motor 7 by the predetermined amount R to open the door. 46 in total
Does not detect a substantial load on the motor 7. When the rotation of the motor 7 by the predetermined amount R ends with no load in this way, the control unit 45 regards the clutch mechanism 15 as being in the first connected state, and ends the return control to the non-connected state. I do.
However, the clutch mechanism 15 is in the first brake state (FIG. 9).
When the guide plate 18 rotates counterclockwise due to the rotation of the motor 7 when the door is opened, the brake concave portion 42B is in contact with the convex portion 40, so that a substantial load is immediately applied to the motor 7, It is detected by the load detector 46. As described above, when the load of the motor 7 is detected before the opening rotation of the motor 7 by the predetermined amount R ends, the control unit 4
5 is considered that the clutch mechanism 15 is in the first brake state, and this time, the motor 7 is again reversed in the door closing direction. Then, in FIG. 9, only the guide plate 18 rotates clockwise, and the engagement surface 39A of the outer slot 39 engages with the slide pin 31 as shown in FIG. Furthermore, guide plate 1
When 8 rotates clockwise, the swing arm 27 rotates clockwise about the drum shaft 12, and the coupling surface 42 </ b> A of the clutch pawl 42 comes into contact with the projection 40. This state is the same as the first connection state in FIG. When the guide plate 18 further rotates clockwise, a load for rotating the wire drum 8 is applied to the motor 7. When the second load is detected by the load detector 46, the control unit 45
Has been switched from the first brake state to the first connection state, whereby the control unit 45 reverses the motor 7 again by the predetermined amount R in the door opening direction. Thereby, as described above, the first connection state returns to the non-connection state. The switching from the first brake state to the first connection state can also be performed by controlling the time during which the motor 7 rotates.
The same principle is applied when returning the second brake state to the non-connection state.

Next, the return of the clutch mechanism 15 from the brake state to the non-connection state of the second embodiment will be described.
Also in the second embodiment, the control unit 45 does not distinguish between the brake state and the connection state, and when the load detector 46 detects a substantial load of the motor 7 by reversing the predetermined amount R of the motor 7. , The clutch mechanism 15 is considered to be in the brake state, and the motor 7 is reversed again. When the motor 7 is reversed again, in FIG. 17 showing the first brake state, only the guide plate 18 initially rotates clockwise, and the slide pin 31 moves toward the engagement surface 39A of the outer slot 39. At this time, since the brake concave portion 42B is engaged with the convex portion 40, the swing arm 27 does not swing in the direction opposite to the arrow A due to the elasticity of the fall prevention spring 69. Further, when the guide plate 18 rotates clockwise, the engagement surface 39A engages with the slide pin 31 to rotate the swing arm 27 clockwise about the drum shaft 12. Then, the brake concave portion 42B separates from the convex portion 40. However, since the engagement surface 39A is engaged with the slide pin 31, the fall prevention spring 69 is instead provided.
The connecting surface 42A of the clutch claw 42 abuts on the projection 40 while the swing arm 27 is held at the outermost position against the elasticity of the swing arm 27. This state is the same as the first connection state in FIG. When the guide plate 18 further rotates clockwise, a load for rotating the wire drum 8 is applied to the motor 7. When this load is detected by the load detector 46, the control unit 45 can determine that the clutch mechanism 15 has been switched from the first brake state to the first connection state, whereby the control unit 45 7 is again inverted by a predetermined amount R in the door opening direction. Thereby, as described above, the first connection state returns to the non-connection state. Thus, there is no substantial difference between the first embodiment and the second embodiment in returning from the brake state to the non-connection state.

(Return from Manual Brake State to Non-Connected State) When returning the brake state and the connected state of the clutch mechanism 15 to the non-connected state, basically, the power of the motor 7 is used. If the motor 7 breaks down while the clutch mechanism 15 is in the brake state or the connection state, the brake state or the connection state is manually released.

First, the manual return of the clutch mechanism 15 from the brake state to the disengaged state of the first embodiment will be described with reference to FIG. 9 showing the first brake state. In FIG.
The slide pin 31 of the swing arm 27 is moved to the outer slot 39.
Is in contact with the contact surface 39B of the wire drum 8
Cannot be rotated clockwise (door rotation), but can be rotated counterclockwise (door rotation). Therefore,
The sliding door 2 is manually slid in the opening direction, and the wire drum 8 is rotated counterclockwise. Then, the convex portion 40 of the wire drum 8 engaged with the brake concave portion 42B becomes
Then, as shown in FIG. 10, another projection 40 comes into contact with the coupling surface 42 </ b> A of the clutch pawl 42. In the state shown in FIG. 10, when the wire drum 8 is further rotated counterclockwise, the connecting surface 42A is a surface that is separated from the mounting shaft 29 as it goes outward, so that the swing arm 27 is rotated.
A force in the direction indicated by the arrow A acts by contact with the convex portion 40, and the interval between the outer ends of the extension slots 37 is formed to be considerably wide, so that the swing arm 27 is attached to the mounting shaft. 29
, The clutch pawl 42 is returned to a position where it does not engage with the projection 40, and the clutch mechanism 15
Is returned from the first brake state to the disconnected state. FIG. 12 shows this state. The same applies to the release of the second brake state.

Next, the manual return of the clutch mechanism 15 from the brake state to the disengaged state in the second embodiment will be described with reference to FIG. 17 showing the first brake state. In FIG. 17, since the slide pin 31 of the swing arm 27 is in contact with the contact surface 39B of the outer slot 39, the wire drum 8 cannot be rotated clockwise (closed rotation).
Counterclockwise rotation (door opening rotation) is possible. Then, the sliding door 2 is manually slid in the opening direction, the wire drum 8 is rotated counterclockwise, and the brake recess 42B is rotated.
The projection 40 of the wire drum 8 that has been engaged with is released from the brake recess 42B. Then, extension slot 3
Since the interval between the outer end portions of 7 is considerably wide,
The swing arm 27 swings about the mounting shaft 29 in the direction opposite to the arrow A by the elastic force of the fall prevention spring 69, and the slide pin 31 is moved to the inner wall 37A of the extension slot 37 as shown in FIG.
Abut. As a result, the clutch pawl 42 is returned to a position where it does not engage with the projection 40, and the clutch mechanism 15 returns to the non-coupled state.

(The fall prevention springs 68, 69 of the second embodiment)
When the clutch mechanism 15 of the first embodiment is manually returned from the first brake state to the non-coupled state as described in the preceding section, the state shown in FIG. 12 is obtained, but the swing arm 27 shown in FIG.
Is merely returned in the direction of the arrow A to a position where the clutch claw barely engages with the convex portion 40. However, the clutch claw 42 is inadvertently driven by the vibration applied to the vehicle body 1 and the weight of the swing arm 27 itself. There is a possibility of moving in the A direction. On the other hand, in the second embodiment, the swing arm 27 (FIG. 1) manually returned from the first brake state to the non-connection state.
8) is urged in the direction indicated by the arrow A by the elastic force of the fall prevention spring 69, so that a reliable operation of the clutch mechanism 15 can be expected.

(Return from manual connection state to non-connection state by manual operation) First, manual return of the clutch mechanism 15 from the connection state to the non-connection state in the first embodiment will be described with reference to FIG. 7 showing the first connection state. It will be described using FIG. In FIG. 7, the slide pin 3
Since 1 is engaged with the engagement surface 39A of the outer slot 39, the wire drum 8 cannot rotate counterclockwise (door rotation), but can rotate clockwise (door rotation). Then, the sliding door 2 is manually slid in the closing direction, and the wire drum 8 is rotated clockwise. Then, the connecting surface 42
The protrusion 40 that has been in contact with A is separated from the connection surface 42A,
Then, another convex portion 40 comes into contact with the brake concave portion 42B of the clutch claw 42, and the state shown in FIG. 8 is obtained. When the wire drum 8 is further rotated clockwise in the state of FIG. 8, the swing arm 27 rotates clockwise about the drum shaft 12 by the contact between the projection 40 and the brake recess 42B, and the first brake shown in FIG. State. In the first brake state, the swing arm 27
Slide pin 31 is in contact with the contact surface 39B of the outer slot 39.
, The slide door 2 becomes heavy and does not move.
Therefore, when the slide door 2 becomes heavy, the slide door 2 is manually slid in the opening direction, and thereafter, when the same operation as the release of the first brake state is performed, the clutch mechanism 15 is disengaged. Return. The release of the second connection state is based on the same principle. As described above, in the manual release from the connection state to the non-connection state, the slide door 2 is manually slid. At this time, the slide amount S of the slide door 2 required for the release is " Gap Y "-" width Z of clutch pawl 42 "+" movement distance T of slide pin 31 that can move in outer slot 39 ". The slide amount S becomes important in relation to the holding of the slide door 2 at the fully open position by the power slide device 5 described later.

The manual return of the clutch mechanism 15 from the connected state to the non-connected state in the second embodiment is the same as in the first embodiment. In the first connected state shown in FIG. 15, the sliding door 2 is manually moved in the closing direction. When the wire drum 8 is rotated clockwise, the first brake state shown in FIG. 16 is obtained. Thereafter, when the slide door 2 is manually slid in the opening direction as described above, the clutch mechanism 15 It is returned to the unconnected state as shown at 18.

(Sliding door 2 with fully open stopper 60)
When the sliding door 2 is moved to a predetermined position in the opening direction by bringing the clutch mechanism 15 into the second connected state by the rotation of the motor 7 to open the door, the sliding door 2 comes into contact with the fully open stopper 60, Further, when the slide door 2 is moved, the slide door 2 moves over the fully opened stopper 60 while elastically deforming the stopper 60 and moves to the fully opened position. When the slide door 2 moves to the fully open position, the control unit 45 reverses the rotation of the motor 7 by a predetermined amount R to return the clutch mechanism 15 to the non-coupled state. After the sliding door 2 is moved to the fully open position in this manner, the sliding door 2 is held at the fully open position by the fully opened stopper 60 that has been elastically restored.

(Slide door 2 by power slide device 5)
The fully open stopper 60 holds the slide door 2 at the fully open position by using the elasticity of a leaf spring or the like. Therefore, the holding force is not so strong. If the vehicle body 1 is tilted forward by more than about 10%, the sliding door 2 may ride over the full-open stopper 60 due to gravity and slide in the closing direction (forward direction). However, in the present invention, the slide door 2 can be reliably held at the fully open position even on such a slope. First, when the motor 7 opens the clutch mechanism 15 in the second connection state and moves the slide door 2 to a predetermined position in the opening direction on the inclined ground as described above, the slide door 2 hits the full-open stopper 60. When the slide door 2 is moved further, the slide door 2 moves over the stopper 60 while elastically deforming the stopper 60 and moves to the fully open position. During this time, there is no special effect due to the inclination, and a strong external force acting on the sliding door 2 in the closing direction only causes a strong load on the motor 7 rotating in the opening direction. When the sliding door 2 is displaced to the fully open position, the control unit 45 reverses the motor 7 in the closing direction by a predetermined amount R in order to return the clutch mechanism 15 to the disengaged state. Since a strong external force acts on the clutch mechanism 15, the clutch mechanism 15 does not return to the non-coupled state. That is, when the sliding door 2 is displaced to the fully open position, the clutch mechanism 15 is in the second connection state shown in FIG. 11, but in this state, the clutch mechanism 15 is affected by an external force acting on the sliding door 2 in the closing direction. An external force acting in the clockwise direction acts on the wire drum 8. Therefore, when the motor 7 is rotated in the closing direction by a predetermined amount R in the state shown in FIG. 8 also rotates clockwise following the external force, the slide pin 30 cannot be separated from the engagement surface 38A, and even after the motor 7 completes the predetermined amount R of closing the door, the clutch mechanism 15 is rotated.
Are maintained in the second connected state of FIG. This is the same in the second embodiment including the fall prevention springs 68 and 69. However, in this second connection state, the wire drum 8
Is transmitted to the guide plate 18 by the engagement between the slide pin 30 and the engagement surface 38A, so that the rotation of the wire drum 8 to close the door is practically impossible. Even when a strong external force is applied to the sliding door 2 in the closing direction, the sliding door 2 is securely held at the fully opened position. The distance D in which the sliding door 2 slides in the closing direction by the predetermined amount R of the motor 7 closing the door is set to be shorter than the width X of the fully open position, and the sliding door 2 closes by the predetermined amount R of the motor 7 closing the door. When the slide door 2 slides following the direction, the slide door 2 is prevented from strongly contacting the full-open stopper 60 (preferably not at all). If the sliding door 2 comes into strong contact with the full-open stopper 60 due to the following sliding of the sliding door 2, the external force acting on the sliding door 2 in the closing direction is substantially attenuated. Therefore, the second connection state shown in FIG. 11 may be changed to an incomplete state, and the slide door 2 cannot be held at the fully open position. When the sliding door 2 is manually closed from the state shown in FIG. 11, the same operation as in the manual release of the above-described connected state is performed to return the clutch mechanism 15 to the non-connected state, and then the sliding door 2 is closed. Slide in the direction. For this purpose, it is necessary to slide the wire drum 8 (slide door 2) in the door opening direction by the slide amount S in the state of FIG.
The slide amount S is set shorter than the distance D over which the slide door 2 slides in the door closing direction by the predetermined amount R of the motor 7 closing the door. Thereby, even if the motor 7 fails in the state of FIG. 11, the slide door 2 can be manually closed.

(Complete door closing by power closing device 58)
When the slide door 2 slides in the closing direction by the power of the motor 7 of the power slide device 5 and the latch 5 of the latch assembly 4 is brought into the half-latch position by engagement with the striker 3, the switch 56 detects this. Then, the control unit 45 terminates the closing rotation of the motor 7 and performs a return control to return the clutch mechanism 15 to the non-coupled state. When the clutch mechanism 15 is disengaged, the control unit 45 operates the power closing device 58 to rotate the latch 50 at the half latch position to the full latch position, and
When the switch 56 detects the full latch position, the operation of the power closing device 58 is stopped, and the motor 7 of the power sliding device 5 is again turned on for a predetermined time or until the load detector 46 detects a load. By rotating the door open, the clutch mechanism 15 is brought into the second connected state (FIG. 11).
), And the control unit 45 ends the control of the motor 7.
Thus, when the slide door 2 is completely closed, the clutch mechanism 15 is brought into the second connection state for the door opening operation. When the open handle 63 of the sliding door 2 is opened from this state, the ratchet 51 is disengaged from the latch 50, and the sliding door 2 is pushed out in the opening direction by the elasticity of a rubber seal provided between the sliding door 2 and the vehicle body 1. At the same time, when the opening operation of the open handle 63 is detected by the switch 64, the control unit 45 rotates the motor 7 of the power slide device 5 to open the door, and slides the slide door 2 in the door opening direction. At this time, even if the vehicle body 1 is on an inclined ground and a strong external force is applied to the slide door 2 in the opening direction simultaneously with the opening of the door, the clutch mechanism 15 is previously brought into the second connection state for opening in the fully closed state. Therefore, the clutch mechanism 15 is instantaneously switched to the second braking state by the overspeed of the wire drum 8 in the door opening direction, so that the sliding door 2 is prevented from sliding at the overspeed instantaneously. Further, when the manual operation button 47 is pressed in the closed state, the motor 7 closes the door by a predetermined amount and the clutch mechanism 15 is returned to the non-coupled state. In the above description, the clutch mechanism 15 is switched to the second connection state when the slide door 2 is in the fully latched state. However, the switching to the second connection state can be changed after the door opening operation. is there. In this case, until immediately before the door opening operation is performed, the clutch mechanism 15 is kept in the non-connected state, and when the opening operation of the open handle 63 is detected by the switch 64, the clutch mechanism 15 is first switched to the second connected state, and thereafter Then, the ratchet 51 is released from the latch 50 by the power opening device 57, and then the power sliding device 5 is operated to slide the sliding door 2 in the door opening direction. Even if such a change is made, sliding of the sliding door 2 at an overspeed when the door is opened is well prevented.

[0039]

As described above, according to the present invention, the wire drum 8 connected to the slide door 2 which opens and closes by sliding with respect to the vehicle body 1 via the wire cable 9 and the wire drum 8 is rotated. And a clutch mechanism 15 provided between the wire drum 8 and the motor 7. The clutch mechanism 15 includes a guide plate 18 that is rotated by the power of the motor 7, Guide slots 32, 33 formed in the guide plate 18, and slide pins 3 slidably engaged with the guide slots 32, 33
When the guide plate 18 rotates, the slide pins 3 move in the guide slots 32 and 33.
The guide slots 32 and 33 have swing arms 26 and 27 which swing about the mounting shafts 28 and 29 by sliding the 0 and 31 to engage and disengage with the wire drum 8. Arc-shaped inner slots 34 and 35 around the drum shaft 12 supporting the wire drum 8
And an extension slot 3 connected to the ends of the inner slots 34, 35 and extending away from the drum shaft 12.
6, 37, and arcuate outer slots 38, 39 communicating with the distal ends of the extension slots 36, 37 and centered on the drum shaft 12, and the slide pins 30, 31 are provided with the outer slots 38, When moved into 39, the swing arms 26 and 27 are configured to engage with the wire drum 8, and the distal ends of the extension slots 36 and 37 are formed sufficiently wide with respect to the diameter of the slide pins 30 and 31. When the swing arms 26 and 27 swing about the mounting shafts 28 and 29 even when the guide plate 18 is not rotating, the slide pins 30 and 31 slide into the outer slots 38 and 39 and the extension slots. The swing arms 26 and 27 are movable in a direction away from the wire drum 8 in a direction away from the wire drum 8.
Since the power sliding device is used for the vehicle sliding door biased by the levers 4 and 75, the clutch mechanism 15 can be reliably prevented from being unintentionally brought into the connected state after the clutch mechanism 15 is manually disconnected by the manual operation. .

[Brief description of the drawings]

FIG. 1 is a side view of a vehicle provided with a sliding door.

FIG. 2 is a cutaway view of a latch assembly.

FIG. 3 is a vertical sectional side view of a power slide device including the clutch mechanism of the first embodiment.

FIG. 4 is a vertical sectional front view of the power slide device.

FIG. 5 is a front view of a guide plate of the clutch mechanism.

FIG. 6 is a front view of a swing arm of the clutch mechanism.

FIG. 7 is a cross-sectional view when the clutch mechanism is in a connected state (first connected state).

FIG. 8 is a cross-sectional view showing a state in which the wire drum has rotated at an overspeed from the first connection state in FIG. 7 and the convex portion has engaged with the brake concave portion.

9 is a cross-sectional view showing a state in which the wire drum rotates at an overspeed from the state of FIG. 8 and the slide pin comes into contact with the contact surface.

10 is a sectional view showing a state in which the wire drum is manually rotated counterclockwise from the state shown in FIG.

FIG. 11 is a sectional view showing a second connection state of the clutch mechanism.

FIG. 12 is a sectional view showing a state where the clutch mechanism is manually returned from a brake state to a non-connection state.

FIG. 13 is a block circuit diagram of the present invention.

FIG. 14 is a longitudinal sectional front view of a power slide device including a clutch mechanism according to a second embodiment.

FIG. 15 is a cross-sectional view when the clutch mechanism is in a connected state (first connected state).

FIG. 16 is a sectional view showing a state in which the wire drum rotates at an overspeed from the first connection state of FIG.

FIG. 17 is a cross-sectional view showing a state in which the wire drum rotates at an overspeed from the state of FIG. 16 and the slide pin comes into contact with the contact surface.

FIG. 18 is a sectional view showing a state in which the clutch mechanism is manually returned from a brake state to a non-connection state.

FIG. 19 is a front view showing an elastic cushion of the guide plate.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Body, 2 ... Slide door, 3 ... Striker, 4 ... Latch assembly, 5 ... Power slide device, 6 ... Quarter panel, 7 ... Motor, 8 ... Wire drum, 9 ... Wire cable, 10 ... Base plate, 11 ... Cover Plate, 12: drum shaft, 13: wire groove, 14: internal space, 15: clutch mechanism, 16: drive gear, 17: connecting pin, 18: guide plate, 19: spring support, 20
... support plate, 21 ... annular flange, 22 ... pan, 2
3 ... spring, 24, 25 ... boss part, 26, 27 ... swing arm, 28, 29 ... mounting shaft, 30, 31 ... slide pin,
32, 33 ... guide slot, 34, 35 ... inner slot, 36, 37 ... extension slot, 36A, 37A ... inner wall, 36B, 37B ... outer wall, 38, 39 ... outer slot, 38A, 39A ... engagement surface, 38B, 39B: contact surface, 40: convex portion, 41, 42: clutch pawl, 41A, 4
2A: Connection surface, 41B, 42B: Brake recess, 45:
Control unit, 46: load detector, 47: manual operation button, 5
0: latch, 51: ratchet, 52, 53: spring, 5
4: Half latch step, 55: Full latch step, 56:
Switch, 57: Power opening device, 58: Power closing device, 59: Wire cable, 60: Fully open stopper, 61: Case, 63: Open handle, 64: Switch, 65: Guide rail, 66: Battery, 67
... Pulse width modulation circuit, 68, 69 ... Fall prevention spring, 68
A, 68B, 69A, 69B ... legs, 70-73 ... projections, 74, 75 ... elastic cushions, D ... distance of the sliding door 2 which moves by rotation of the motor 7 by a predetermined amount R, R ... clutch mechanism 15 A predetermined amount of rotation of the motor 7 required to return to the connected state, S: a sliding amount of the slide door 2 required for manually releasing the connected state, T: an outer slot 3
9, the distance that the slide pin 31 can move, X: the width of the fully open position defined by the fully open stopper 60, Y: the gap between the projections 40, Z: the width of the clutch pawl 42.

Claims (1)

(57) [Claims] 1. A wire drum 8 connected via a wire cable 9 to a slide door 2 that opens and closes by sliding with respect to a vehicle body 1, a motor 7 for rotating the wire drum 8, and the wire Clutch mechanism 15 provided between drum 8 and motor 7
The clutch mechanism 15 includes a guide plate 18 that is rotated by the power of the motor 7, and a guide slot 3 formed in the guide plate 18.
2, 33, and slide pins 30, 31 slidably engaged with the guide slots 32, 33, respectively.
As the slide pins 30 and 31 slide in the inside 33, the swing arms 26 and 27 swing about the mounting shafts 28 and 29 and engage and disengage with the wire drum 8.
The guide slots 32, 33 include arcuate inner slots 34, 35 around the drum shaft 12 that supports the wire drum 8, and the inner slots 3, 35.
Extension slots 36, 37 connected to the ends of the drum shafts 4 and 35 and extending in a direction away from the drum shaft 12, and arcuate outer slots centered on the drum shaft 12 communicating with the distal ends of the extension slots 36 and 37; And the slide pins 30, 31 having the outer slots 38, 3
9, the swing arms 26 and 27 are engaged with the wire drum 8, and the extension slots 3
6 and 37 are formed to be sufficiently wide with respect to the diameter of the slide pins 30 and 31 so that the guide plate 18
When the swing arms 26 and 27 swing around the mounting shafts 28 and 29 even if the
Numerals 0 and 31 allow movement between the outer slots 38 and 39 and the distal ends of the extension slots 36 and 37, and the swing arms 26 and 27 move the spring 74 in a direction away from the wire drum 8. , 75, a power sliding device for a vehicle sliding door.