JP3659128B2 - Automatic sliding door opening / closing device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a sliding door automatic opening / closing device, and more particularly to a sliding door automatic opening / closing device that solves a problem that a drive wire is loosened and protrudes from a guide rail.
[0002]
[Prior art]
FIG. 8 shows an example of the overall configuration of the slide door automatic opening / closing device. In the figure, a slide door D that opens and closes a vehicle side opening moves by moving a guide roller 92 at the tip of a bracket 91 provided at the rear edge thereof within a center guide rail 93 disposed in the front-rear direction on the outer surface of the quarter panel. It is like that. The tip of the bracket 91 is coupled to a drive wire 94 inserted into the center guide rail 93, and the drive wire 94 coming out of the center guide rail 93 is arranged near the front end and the rear end of the center guide rail 93, respectively. The direction is changed in the front-rear direction via a guide pulley provided (pulley guides 95 and 96 attached to the guide pulley), and the motor is electrically driven through the outer casings 97 and 98 disposed in the quarter panel. The drive mechanism 99 provided with the motor is laid in an annular shape as a whole.
[0003]
Then, the drive wire 94 is pulled out and rotated by the drive mechanism 99, so that when the drive wire 94 in the center guide rail 93 moves to the rear of the vehicle, the slide door D is opened to the rear, on the contrary. When the drive wire 94 in the center guide rail 93 moves forward of the vehicle, the slide door D is closed and moved forward.
[0004]
[Problems to be solved by the invention]
By the way, in the conventional sliding door automatic opening / closing device, if the sliding door D does not move smoothly for some reason during opening and closing, the driving wire 94 on the side fed from the driving mechanism 99 is loosened, which is the center guide rail. There is a problem that it goes out of 93 and looks bad. The drive mechanism 99 is usually provided with a wire slack prevention mechanism so that the drive wire is not caught between the winding pulley (not shown) and the case, but the drive mechanism 99 reaches the center guide rail 93. It has been difficult to quickly eliminate the looseness of the drive wire 94 in the center guide rail 93 due to the sliding resistance of the outer casings 97 and 98 therebetween.
[0005]
SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a slide door automatic opening / closing device that prevents such a problem that a drive wire is not loosened and does not protrude from a guide rail.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, according to the first aspect of the present invention, a drive wire (7) which is slidably engaged with a door (D) on a guide rail (1) provided on a vehicle body and is drawn out and pulled out by a drive device. Is connected to the door (D) via guide pulleys (5, 6) provided near the front end (11) and rear end (12) of the guide rail (1), and the guide pulley of the drive wire (7) A part from (5, 6) to the drive device is inserted into the tubular outer casing (75, 78), and the drive wire (7) is pulled out by the drive device, so that the door (D) is guided to the guide rail. (1) In the slide door automatic opening and closing device moved along (1), the length of the wire path between the guide pulley (5, 6) and the end of the outer casing (75, 78) on the guide pulley (5, 6) side By increasing the (D) a guide pulley (5,6) a wire slack preventing mechanism for preventing looseness (2,84,85,86,87,88) of the drive wire (7) between the provided.
[0007]
In the first aspect of the invention, since the wire slack preventing mechanism for increasing the length of the wire path between the guide pulley and the end portion of the outer casing on the guide pulley side is provided, the drive wire in the guide rail is loosened. Even without being affected by sliding resistance with the outer casing, the wire path length of the drive wire is immediately increased to prevent the occurrence of slack and avoid the drive wire from protruding outside the guide rail. .
[0008]
In the second aspect of the invention, the end of the outer casing (75, 78) on the drive device side is fixed, and the end of the outer casing (75, 78) on the guide pulley (5, 6) side is fixed to the guide pulley (5). 6), and the wire slack preventing mechanism is such that the end of the outer casing (75, 78) on the guide pulley (5, 6) side is separated from the guide pulley (5, 6). It will be energized.
[0009]
In the second aspect of the present invention, the end portion of the outer casing of the outer casing is biased in a direction away from the guide pulley by the wire slack preventing mechanism, and when the drive wire in the guide rail attempts to loosen, The end of the wire is separated from the guide pulley, and the wire path length between the two increases. As a result, the occurrence of slack in the drive wire is immediately prevented without being affected by the sliding resistance with the outer casing, and the drive wire is prevented from protruding outside the guide rail.
[0010]
In the third aspect of the invention, the wire slack prevention mechanism is configured such that the drive wire (5, 6) and the drive pulley (5, 6) side end portion of the outer casing (75, 78) are disposed between the guide pulley (5, 6). 7) is urged in the bending direction.
[0011]
In the third invention, the drive wire between the guide pulley and the end of the outer casing on the guide pulley side is biased in the bending direction by the wire slack bar mechanism, and the drive wire in the guide rail is loosened. Then, the amount of bending of the drive wire increases and the wire path length increases. As a result, the occurrence of slack in the drive wire is immediately prevented without being affected by the sliding resistance with the outer casing, and the drive wire is prevented from protruding outside the guide rail.
[0012]
In addition, the code | symbol in the said parenthesis shows the correspondence with the specific means as described in embodiment mentioned later.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
(First embodiment)
In FIG. 1, the center guide rail 1 extends in the vehicle front-rear direction (left-right direction in FIG. 1) along the outer surface of the vehicle quarter panel P, and its front end is curved inwardly along the rear edge of the vehicle side opening O. doing. 2 and 3, the center guide rail 1 is actually located in the recess P1 of the quarter panel P and is flush with the outer surface of the quarter panel P and the outer surface of the slide door D. ing. A stay 31 is provided at the rear edge of the slide door D that closes the vehicle side opening O, the bracket 3 is coupled to the tip of the stay 3 so as to be horizontally rotatable, and horizontal rollers 32 provided at both ends in the width direction of the tip of the bracket 3; A vertical roller 33 provided in the center is located in the front end portion 11 of the center guide rail 1.
[0014]
The center guide rail 1 has a C-shaped cross section that opens outward (FIGS. 2 and 3), and the upper portion of the cross section has a slightly small width, and is erected on the extended portion 321 at the tip of the bracket 3 here. A horizontal roller 32 is positioned supported by the shaft body 322. The vertical roller 33 is supported on a shaft body 331 that protrudes horizontally at the tip of the bracket 3 and is positioned on the bottom wall 13 of the center guide rail 1. A molding 15 is joined to the upper edge of the opening of the center guide rail 1 to form a surface continuous with the outer surface of the quarter panel P. A wire locking member 4 is bolted to the side surface of the distal end portion of the bracket 3, and locking portions 41 and 42 are formed at both ends thereof in a plan view (FIG. 1). These locking portions 41 and 42 are formed by folding the tip extending from the main body of the wire locking member 4 with a constant width into a circular shape (FIG. 3), and are located near the lower edge of the opening of the center guide rail 1.
[0015]
A guide pulley 5 is provided so as to overlap the front end portion 11 of the center guide rail 1 in a plan view (FIG. 1), and the guide pulley 5 can be rotated in a horizontal posture by a holding member 51 as shown in FIG. It is held and is located below the rail front end portion 11. The holding member 51 has a holding portion 511 in which a holding space extending horizontally is formed at the center in the vertical direction, and the guide pulley 5 is rotatable on a shaft body 512 provided in a vertical posture on the holding portion 511. It is installed. The upper and lower halves of the holding member 51 are bolted to an auxiliary plate 52 that is bonded and fixed to the inner surface of the quarter panel P.
[0016]
A guide pulley 6 is provided so as to overlap the rear end portion 12 (FIG. 1) of the center guide rail 1 in a plan view, and the guide pulley 6 has a structure similar to that of the guide pulley 5 below the rail rear end portion 12. Is provided. Drive wires 7 and 7 ′ are suspended on the front and rear guide pulleys 5 and 6. The drive wire 7 has a cylindrical piece 71 at one end hooked and fixed to a locking portion 41 of a wire locking member 4 provided on the bracket 3, extends rearward along the center guide rail 1, and then is attached to the rear guide pulley 6. It is suspended and turned forward, and is inserted into the outer case 75 through a cable guide 73 incorporating a wire slack preventing mechanism 2 which will be described in detail later.
[0017]
The front end of the outer case 75 is fixed to a support frame 79 in the quarter panel P, and the drive cable 7 is exposed from the front end of the outer case 75 on the way to the front of the vehicle and is provided adjacent to the support frame 79. The other auxiliary pulley 76 is suspended to reach a drive mechanism (not shown) having a drive motor. On the other hand, after the cylindrical piece 72 of one end of the drive cable 7 ′ is hooked and fixed to the locking portion 42 of the wire locking member 4 and is suspended on the front guide pulley 5, the direction of the wire cable is prevented. 2 extends through the outer casing 78 to the rear of the vehicle via a cable guide 74 with a built-in 2 and is exposed halfway to reach the drive mechanism via the other auxiliary pulley 77. The rear end of the outer case 78 is fixed to a support frame 79 in the quarter panel P.
[0018]
Guide pieces 81, 82, and 83 are respectively provided at the front end curved portion of the center guide rail 1 and the front and rear portions of the straight intermediate portion, and these guide pieces 81 to 83 face outward as shown in FIG. It is a long body having a substantially U-shaped cross section, and its top wall extends along the bottom wall 13 of the center guide rail 1 and is joined thereto. The portion of the drive wires 7 and 7 ′ that are suspended in an annular shape between the front and rear guide pulleys 5 and 6 and located outside the vehicle (the portion of the drive wire 7 in the state of FIG. 1) is positioned within the guide pieces 81 to 83. 3 (FIG. 3), while being guided by the guide pieces 81 to 83, the drive mechanism moves the lower part of the center guide rail 1 in the vehicle front-rear direction. When the drive wires 7 and 7 ′ are rotated clockwise in the plan view of FIG. 1, the portions of the drive wires 7 and 7 ′ located outside the vehicle move to the rear of the vehicle, and the slide door D is moved via the bracket 3. It can be moved to the rear of the vehicle. On the other hand, when the drive wires 7 and 7 ′ are rotated counterclockwise in the plan view of FIG. 1, the portions of the drive wires 7 and 7 ′ located outside the vehicle move forward and slide through the bracket 3. The door D is closed and moved forward of the vehicle.
[0019]
FIG. 4 shows an exploded view of the wire slack preventing mechanism 2 built in the cable guide 74 (FIG. 1), and FIG. 5 shows a sectional view thereof. The wire slack preventing mechanism 2 includes a coil spring 21 and a receiving member 22, and these are housed in a distal end opening 741 of the cable guide 74. The receiving member 22 is a cylindrical body having a large-diameter flange portion 221 at one end, and an insertion hole 222 through which the drive wire 7 ′ is inserted is formed at the center thereof. The insertion hole 222 is large from one end side to the middle. It has a diameter (Fig. 5). The drive wire 7 ′ passes from the insertion hole 222 into the insertion hole 743 of the cable guide 74. The coil spring 21 is disposed around the receiving member 22 and is positioned between the stepped surface 742 (FIG. 5) in the tip opening 741 and the flange portion 221. An end 781 of the outer casing 78 is inserted into the large diameter portion of the insertion hole 222 of the receiving member 22. The structure of the wire loosening prevention mechanism 2 described above is the same as that provided in the cable guide 73.
[0020]
In FIG. 1, when the slide door D is smoothly moved when the drive wire 7 ′ is rotated clockwise and the slide door D is opened, the cable guide is sent from the drive mechanism and is guided from the auxiliary pulley 77. The drive wire 7 'up to 74 does not sag, and the outer casing 78 tends to be linear due to the tensioned drive wire 7'. Therefore, the end 781 presses the receiving member 22, and the coil spring 21 is compressed and deformed, and the receiving member 22 is pushed into the distal end opening 741 of the cable guide 74 (FIG. 5A). In this state, if the movement of the slide door D lacks smoothness and the drive wire 7 tries to loosen, the receiving member 22 is pushed out of the tip opening 741 by the spring force of the coil spring 21 as shown in FIG. Accordingly, the wire path length between the front end portion (guide pulley side end portion) 781 of the outer casing 78 and the guide pulley 5 increases. As a result, the slack of the drive wire 7 ′ in the center guide rail 1 is prevented, and the problem of the drive wire 7 ′ protruding outside the center guide rail 1 is prevented.
[0021]
When the drive wires 7, 7 ′ rotate counterclockwise in FIG. 1 and the sliding door D is closed, if the movement of the drive doors 7 is not smooth, it is sent from the drive mechanism and reaches the cable guide 73 from the auxiliary pulley 76. In this case, the wire loosening prevention mechanism 2 provided in the cable guide 73 operates in the same manner as described above, and the rear end portion (guide pulley side end portion) 751 of the outer casing 75 is operated. And the wire path length between the guide pulley 6 increases. As a result, the slack of the drive wire 7 in the center guide rail 1 is quickly prevented, and the problem that the drive wire 7 protrudes outside the center guide rail 1 is avoided.
[0022]
(Second Embodiment)
In FIG. 6, the front end portion 781 of the outer casing 78 is inserted into the insertion hole 222 of the receiving member 22 housed in the tip opening 741 of the cable guide 74 as in the first embodiment (see FIG. 5). The coil spring 21 in the first embodiment is not provided in this embodiment. Instead, as shown in FIG. 6, a position-fixed small pulley 84 constituting a wire slack preventing mechanism is provided on the side close to the cable guide 74, and this abuts the side surface of the outer casing 78 from one side. A small pulley 85 that contacts the side surface of the outer casing 78 from the side opposite to the small pulley 84 is provided on the side far from the cable guide 74. The small pulley 85 is provided on the side surface of the outer casing 78 by the spring force of the spring member 86. It is energized towards.
[0023]
In such a structure, when the drive wire 7 ′ in the guide rail 1 tries to loosen, the outer casing 78 is a portion where the small pulley 85 is pressed between the rear end portion fixed to the support frame 79 and the small pulley 84. 4, the front end (guide pulley side end) 781 of the outer casing 78 is moved together with the receiving member 22 outside the front end opening 741 (FIG. 4). As a result, the wire path length between the front end 781 of the outer casing 78 and the guide pulley 5 increases. As a result, the slack of the drive wire 7 ′ in the center guide rail 1 is prevented, and the problem of the drive wire 7 ′ protruding outside the center guide rail 1 is avoided. This structure is similarly provided for the outer casing 75.
[0024]
(Third embodiment)
In this embodiment, the cable guide 74 (see FIG. 1) is omitted as shown in FIG. 7, and the front end 781 of the outer casing 78 is fixed in position. A drive wire 7 ′ is exposed between the guide pulley 5 and the exposed drive wire 7 ′ from which a small pulley 87 constituting a wire slack preventing mechanism comes into contact, and the small pulley 87 is a spring member. 88 is biased toward the side surface of the drive wire 7 ′.
[0025]
In such a structure, when the drive wire 7 ′ in the guide rail 1 tries to loosen, the drive wire 7 ′ is illustrated in the portion where the small pulley 87 is pressed between the front end 781 of the outer casing 78 and the guide pulley 5. It is greatly curved from the straight line to the side (downward in FIG. 7). As a result, the length of the wire path between the front end 781 of the outer casing 78 and the guide pulley 5 is increased, the slack of the drive wire 7 ′ in the center guide rail 1 is prevented, and the drive wire 7 ′ is center guide rail. The trouble of protruding out of 1 is avoided. This structure is similarly provided for the outer casing 75.
[0026]
In each of the above embodiments, the wire slack preventing mechanism is provided on either side of the guide pulleys 5 and 6, but it can also be provided on only one of them.
[0027]
【The invention's effect】
As described above, according to the automatic sliding door opening / closing device of the present invention, even if the drive wire is slack, it can be prevented from protruding from the guide rail, and the appearance is not deteriorated.
[Brief description of the drawings]
FIG. 1 is an overall horizontal sectional view of a slide door automatic opening / closing device showing a first embodiment of the present invention.
FIG. 2 is a vertical sectional view taken along line II-II in FIG.
3 is a vertical sectional view taken along line III-III in FIG.
FIG. 4 is an exploded perspective view of a wire slack preventing mechanism.
FIG. 5 is a cross-sectional view of a wire slack preventing mechanism.
FIG. 6 is a half horizontal sectional view of a slide door automatic opening / closing device showing a second embodiment of the present invention.
FIG. 7 is a half horizontal sectional view of a slide door automatic opening / closing device showing a third embodiment of the present invention.
FIG. 8 is a side view of a conventional automatic sliding door opening / closing device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Guide rail, 2 ... Wire slack prevention mechanism, 32 ... Horizontal guide roller, 33 ... Vertical guide roller, 5, 6 ... Guide pulley, 7, 7 '... Drive wire, 85, 87 ... Small pulley, 86, 88 ... Spring member, D ... slide door.

Claims (3)

A door is slidably engaged with a guide rail provided on the vehicle body, and a drive wire drawn out and drawn by a driving device is connected to the door via a guide pulley provided near the front end and the rear end of the guide rail. Then, a part of the drive wire from the guide pulley to the drive device is inserted into a tubular outer casing, and the drive wire is pulled out by the drive device so that the door is moved along the guide rail. In the slide door automatic opening and closing device to be moved, the length of the wire path between the guide pulley and the end portion of the outer casing on the guide pulley side is increased, whereby the door and the guide pulley are An automatic sliding door opening / closing device provided with a wire slack prevention mechanism for preventing slack of a drive wire. The end of the outer casing on the driving device side is fixed, and the end of the outer casing on the guide pulley side can be moved closer to and away from the guide pulley. The sliding door automatic opening and closing device according to claim 1, wherein the side end portion is biased in a direction away from the guide pulley. The sliding door automatic opening and closing according to claim 1, wherein the wire slack preventing mechanism biases the drive wire in a bending direction between the guide pulley and an end portion of the outer casing on the guide pulley side. apparatus.

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