JP3974010B2 - Sliding door drive device for vehicle - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a sliding door drive device for a vehicle.
[0002]
[Prior art]
[Patent Document 1]
JP 2001-113947 A [Patent Document 2]
JP 2001-323724 A [Patent Document 3]
Japanese Patent Laid-Open No. 8-232536
In Patent Document 1, as shown in FIG. 8, a guide rail 101 whose front end is curved inward of the vehicle body (upward in FIG. 7) is provided on the vehicle body 102, and the door 103 is slid onto the guide rail 101 via the roller bracket 104. The front and rear drive cables 105, 106 are provided along the guide rail 101, and one end of each of the drive cables is connected to the roller bracket 104 and provided near the front and rear ends of the guide rail. A cable type which is connected to a cable driving device (not shown) via pulleys 107 and 108, and moves the door 103 along the guide rail 101 by feeding and retracting the driving cables 105 and 106 by the driving device. A sliding door automatic opening / closing device 100 is disclosed.
[0004]
In such an apparatus 100, the pulleys 107 and 108 are supported so as to be rotatable around the axial center C1 extending in the vertical direction. Therefore, the front pulley 107 particularly protrudes greatly toward the inside of the vehicle body. In Patent Document 1, in order to minimize the protrusion of the pulleys 107 and 108 into the vehicle, the front and rear ends of the roller bracket 104 are provided with protrusions 109 and 110 that protrude toward the vehicle interior, A configuration is adopted in which the end of the side drive cable (for opening direction operation) 106 is connected, and the end of the front side drive cable (for closing direction operation) 105 is connected to the rear-side protrusion 110.
[0005]
Further, in Patent Document 2, as shown in FIG. 9, the front pulley 107 is provided at a position overlapping the guide rail 101 in plan view, thereby further reducing the protrusion of the front pulley 107 toward the vehicle interior. is suggesting. In this device, a guide piece for guiding the drive cable 105 is provided below the guide rail 101.
[0006]
On the other hand, in Patent Document 3, as shown in FIGS. 10 and 11, the front drive cable 105 is turned 180 degrees by a guide member 112 provided at the front end of the guide rail 101, and the rear is again along the guide rail 101. An opening / closing device 114 for a vehicle sliding door that guides the vehicle up to this point is disclosed. In this apparatus, as shown in FIG. 10, the front drive cable 105 and the rear drive cable 106 are both turned from the rear of the vehicle by the guide pulley 115 and drawn into the vehicle, and are connected to the cable drive device 116. Yes. The cable drive device 116 includes a drum that winds and sends out the drive cables 105 and 106, and a motor M and a speed reducer that rotationally drive the drum. As shown in FIG. 11, the first pulley 118 is rotatably supported around an axis C <b> 2 in a direction substantially perpendicular to the curved portion 117 of the guide rail 101, and the first pulley 118 and the curved portion 117. And a second pulley 119 that rotates around a vertical axis C3 for guiding the drive cable 105 on the front side.
[0007]
[Problems to be solved by the invention]
In the device 100 of Patent Document 1, the drive cables 105 and 106 that slide on the outside of the guide rail 101 (the outside of the vehicle body) are turned to the inside of the vehicle by pulleys 107 and 108 that rotate about the vertical axis C1. Therefore, the direction-change drive cable provided in the vehicle can be guided to the cable drive device 109 by the routing route in the vehicle. Further, the protruding height of the pulleys 107 and 108 into the vehicle is reduced to some extent. However, the pulley 107 on the front side is still protruding because the curved portion itself protrudes toward the inside of the vehicle.
[0008]
On the other hand, the sliding door opening and closing device of Patent Document 2 has a more protruding height than that of Patent Document 1, but the configuration is complicated, such as providing a separate guide piece below the guide rail 101. .
[0009]
Further, the sliding door opening and closing device 114 of Patent Document 3 needs to provide two pulleys 118 and 119 on the front side of the guide rail 101. Moreover, since the drive cable 105 reversed from the upper side is again guided to the rear part of the vehicle body through the outside of the vehicle body and drawn into the vehicle from the rear part, the routing route becomes longer and the power efficiency becomes lower. Moreover, since the first pulley 118 protrudes in the extending direction of the curved portion 117, the protruding height toward the vehicle interior is considerably large.
[0010]
The present invention is a sliding door that can open and close the sliding door with a driving efficiency equivalent to that of the conventional sliding door driving device, and can further suppress the protruding height to the inside of the vehicle as compared with the conventional device. Providing a drive device is a technical problem.
[0011]
[Means for Solving the Problems]
A sliding door driving device for a vehicle according to the present invention (Claim 1) extends in the front-rear direction along the side wall of the vehicle, supports a guide rail whose front end is curved inward of the vehicle, and supports the door of the vehicle. A door bracket that travels along the guide rail, a pulley that is rotatably supported around an axis that intersects the side surface of the vehicle at a substantially right angle or an angle of 90 ± 20 degrees near the front end of the guide rail; One end is locked to the door bracket, extends forward along the guide rail, is redirected rearward by the pulley, and one end is locked to the front bracket reaching the cable drive device and the door bracket, The rear cable that extends rearward along the rear of the guide rail and reaches the cable drive device and the front cable are substantially parallel to the curved portion of the guide rail. It is characterized in that a guide for smoothly turning between the tangential direction and the pulley.
[0012]
In such a sliding door driving apparatus, before Symbol pulley is rotatably supported within a pulley case having a recess for accommodating the pulley, comprising a guide groove provided integrally the guide to the pulley casing Those are preferred (Claim 2 ). Furthermore, it is preferable that the guide groove extends to the back side of the pulley case.
[0013]
[Operation and effect of the invention]
In the sliding door drive device of the present invention (Claim 1), the pulley on the front side is provided so as to be rotatable about an axis that intersects the side wall of the vehicle body at a substantially right angle or an angle of 90 ± 20 degrees. It can be arranged in a state of being almost parallel to the side wall of the vehicle body, in other words, sticking to the side wall. That is, the pulley can be brought into close contact with the side wall of the vehicle body. Therefore, the protrusion height to the inside of the vehicle can be considerably reduced. Further, since the front cable is smoothly changed in the tangential direction of the pulley by the guide, the engagement with the pulley is also smooth.
[0014]
Note that the operation of moving the door bracket forward and backward along the guide rail when the cable driving device pulls one of the front cable and the rear cable and sends the other is the same as the conventional one.
[0015]
Those prior Symbol guide comprises a guide groove provided integrally with the pulley casing (Claim 2) is easily installed in the guide, moreover easily prevents infiltration of water from outside. Further, in the case where the guide groove extends to the back side of the pulley case (Claim 3), the cable can be extended from the curved portion of the guide rail to the pulley substantially in parallel.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Next, an embodiment of a sliding door drive device (hereinafter simply referred to as a door drive device) of the present invention will be described with reference to the drawings. FIG. 1 is a plan view of an essential part showing an embodiment of a door drive device of the present invention, FIG. 2 is a perspective view before assembly of the door drive device around a pulley, and FIG. 3 is after assembly of the door drive device around a pulley. FIG. 4 is a sectional view taken along the line IV-IV in FIG. 3, FIG. 5 is a schematic plan view showing another embodiment of the door drive device of the present invention, and FIGS. FIG. 7A and FIG. 7B are a schematic plan view and a side view, respectively, showing still another embodiment of the door drive device of the present invention. is there.
[0017]
A door driving device 10 shown in FIG. 1 includes a guide rail 12 provided on a vehicle body 11, a door 13 guided in the opening / closing direction along the guide rail, and a door connected to the door, and an end portion passing through the guide rail 12 inside. Roller bracket (door bracket) 16 provided with rolling horizontal rollers 14a and 14b and vertical roller 15, front cable 17 and rear cable 18 whose ends are locked to the roller bracket, and direction change of front cable 17 Preferably, a front pulley 20 provided near the front end of the guide rail 12, a rear pulley 21 for changing the direction of the rear cable 18, and a cable driving device 22 for circulatingly driving the loops of the cables 17 and 18. It has.
[0018]
The vehicle body 11 is, for example, a side wall 11a of an automobile, and is shown in a cross-sectional view of the automobile in FIG. The lower side of FIG. 1 is the vehicle inner side, and the left side is the front side of the automobile. The side wall 11a is provided with three guide rails, an upper guide rail, a center guide rail, and a lower guide rail, and the center guide rail is shifted rearward from the other two guide rails. The guide rail 12 provided with the door drive device 10 of FIG. 1 may be any guide rail, but is usually applied to a center guide rail having a good balance of operating points. The guide rail 12 may be the same as that conventionally known, and has a substantially U-shaped cross section, and is provided with a curved portion 24 that is curved inward and extends obliquely on the front end side. The reason why the front end of the guide rail 12 is curved toward the inside of the vehicle is to pull it into the inside of the vehicle when the door 13 traveling outside the side wall 11a of the vehicle body 11 is closed. The inner panel 11b of the vehicle body 11 is provided with a recess 25 that is recessed in a trapezoidal shape in plan view so as to accommodate the curved portion 24 thereof. Reference numeral 26 in FIG. 1 denotes an outer panel that is continuous with the guide rail 12.
[0019]
The roller bracket 16 includes a traveling portion 16a that travels along the guide rail 12, a base portion 16b that is fixed to the door 13, and a shaft portion J1 that is perpendicular to the base portion 16b with respect to the traveling portion 16a. And a pin 16c rotatably connected to the pin 16c. A pair of horizontal rollers 14a and 14b are provided on the traveling portion 16a by pins 27 and 27 so as to be rotatable around a vertical axis J1. Further, a vertical roller 15 is provided at a rising portion of the roller bracket 16 by a shaft 28 so as to be rotatable about an axis J2 which is substantially perpendicular to the guide rail 12 and faces the horizontal direction. Further, a nipple end (taiko end) 17a fixed to the end of the front cable 17 and a nipple end 18a fixed to the end of the rear cable 18 are locked to the lower portion of the traveling portion 16a.
[0020]
Nipple end 17a, 18a is a cylindrical, horizontal rollers 14a, preferably provided 14b axis J 1 and concentric. The nipple ends 17a and 18a are preferably pivotably locked to the traveling portion 16a, but may not be able to rotate. In this embodiment, the nipple end 17a of the front cable 17 is provided concentrically with the axis of the front horizontal roller 14a, and the nipple end 18a of the rear cable 18 is concentric with the axis of the rear horizontal roller 14b. It is locked. However, as in the case of Patent Document 1 in FIG. 7, the cables 17 and 18 can be locked so as to cross each other with the front and rear reversed. Furthermore, both the nipple ends 17a and 18 can be concentrically locked with the horizontal roller 14b in the vicinity of the rear end of the traveling portion 16a, for example, the rear side. Moreover, the protrusion part which protrudes in the back | inner side of the guide rail 12 can be provided from the front-and-rear end of the traveling part 16a, or only from the rear end, and the nipple ends 17a and 18a can be latched to these protrusion parts.
[0021]
The base portion 16b of the roller bracket 16 is fixed to a middle position in the vertical direction of the door 13 by bolts 29 and nuts. Roller brackets substantially the same as the roller bracket 16 of FIG. 1 are provided at the upper end and the lower end of the door 13 and are guided by an upper guide rail and a lower guide rail, respectively, so that they can run freely. As described above, the center guide rail is displaced rearward from the upper guide rail and the lower guide rail, so that the door 13 is displaced with respect to the guide rail at three points where the upper, middle and lower axes are displaced. Supported. Since the base portion 16b and the running portion 16a of each roller bracket are rotatable by the pin 16c, when the horizontal rollers 14a and 14b and the vertical roller 15 move along the curved portion 24, the door 13 has the curved portion 24. It translates along a curve and is pulled inside or lifted up.
[0022]
The front cable 17 and the rear cable 18 are driven by pulling the door 13 forward or backward, and usually a strand cable in which metal strands are twisted together is used. The use of such cables 17 and 18 as elements for driving a sliding door is known from Patent Documents 1 to 3 and the like. The cables 17 and 18 that are turned by the front and rear pulleys 20 and the rear pulley 21 and guided into the vehicle are guided to the cable driving device 22 by the conduits 31 and 32, respectively. As the conduits 31 and 32, conventionally known conduits for pull control cables are used. The cables 17 and 18 can be stretched by a plurality of pulleys or sliding guides instead of the conduits, but the guides by the conduits 31 and 32 are easier to route. Moreover, it can replace with the pulley 21 of the back side, and can also use the slide guide provided with the curved guide groove. The cable driving device 22 is a conventionally known type including a drum 33 that locks the nipple ends fixed to the other ends of the cables 17 and 18 and winds them in opposite directions, a motor M that reciprocally rotates the drum, and a speed reducer 34. Is.
[0023]
The front pulley 20 is rotatably provided around an axis J3 that is substantially perpendicular to the side wall 11a of the vehicle. In this embodiment, the front pulley 20 is rotatably accommodated in a pulley case 35, and the pulley case 35 is attached to the outer surface of the recess 25 of the vehicle body.
[0024]
Next, the front pulley 20 and the pulley case 35 will be described in detail with reference to FIGS. The front pulley 20 shown in FIG. 2 includes a cylindrical boss portion 36 and a rim portion 37 disposed on the outer periphery thereof. On the outer peripheral surface of the rim portion 37, an annular groove 38 having an arcuate cross section that engages with the cable is formed. Such a pulley 20 is made of a synthetic resin having high strength and durability, such as polyacetal, nylon, polybutylene terephthalate (PBT), so-called engineering plastic, or the like.
[0025]
The pulley case 35 has a substantially T-shaped configuration including a cylindrical recess 39 that accommodates the pulley 20, a shaft portion 40 that rises from the bottom center of the recess, and a mounting portion 41 that extends vertically. The shaft portion 40 is a portion where the boss portion 36 of the pulley 20 is rotatably fitted (see FIG. 4). The thickness of the pulley case 35 is somewhat thicker than the depth of the recess 39. A hole 42 for inserting a bolt is formed in the attachment portion 41. Further, a linear first guide groove 44 for guiding the lower cable is formed laterally from the vicinity of the lower portion of the recess 39 to the side surface 43. The groove bottom 44a of the first guide groove 44 has an arcuate cross section. A conduit mounting portion 45 is provided at the outlet end of the first guide groove 44. The first guide groove 44 faces the tangential direction of the annular groove 38 of the pulley 20 in the attached state.
[0026]
Further, a second guide groove 46 for guiding the upper cable is formed laterally from the upper portion of the recess 39. The groove bottom 46a of the second guide groove 46 is also arcuate in cross section. The second guide groove 46 extends in the tangential direction of the pulley 20 when attached as a whole, but does not reach the side surface 43 and stops halfway as shown in FIG. As shown in FIG. 4, the groove bottom 46 a of the second guide groove 46 is gently curved toward the back surface side of the pulley case 35, and opens on the back surface. Furthermore, in this embodiment, a protrusion 47 is provided on the back surface side of the pulley case 35 so that the length of the curved portion of the second guide groove 46 is sufficient, and an opening 48 for leading a cable to the tip of the protrusion. Is forming.
[0027]
Further, in this embodiment, a shallow step portion 49 is formed on the front surface of the pulley case 35, and the cover 50 is fitted and attached to the step portion. Thereby, in a state where the cover 50 is attached, the surface of the cover 50 and the surface of the pulley case 35 are flush with each other. The cover 50 is formed with two holes 51 for attaching to the pulley case 35 with a countersunk screw or the like, and the countersunk corresponding to the countersunk screw is formed in these holes 51. The pulley case 35 and the cover 50 can be made of a synthetic resin such as polyacetal, nylon, polybutylene terephthalate (PBT).
[0028]
In addition, it is preferable to interpose a sheet-like packing between the pulley case 35 and the cover 50. Further, it is preferable to provide a grommet or boot with a lip that is in sliding contact with the cable on the protrusion 47 on the back surface side so as to prevent the intrusion of rainwater as much as possible. The grommet or boot is preferably made of rubber. Furthermore, it is preferable to provide a cylindrical seal packing in sliding contact with the cable 17 so that rainwater does not enter the conduit 31 at the end of the conduit 31 or the conduit attachment portion 45.
[0029]
The pulley 20 and the pulley case 35 configured as described above are attached to the outside of the side surface of the concave portion 25 of the vehicle body with screws or the like, for example, as shown in FIG. The front cable 17 locked to the running portion 16a of the roller bracket 16 extends substantially parallel to the curved portion 24 of the guide rail 12, that is, obliquely in plan view with respect to the side surface of the vehicle body 11, and the rear surface of the pulley case 35. It enters the pulley case 35 from the opening 48 of the side protrusion. Next, the direction of the cable 17 is changed by the second guide groove 46 so as to be substantially parallel to the side surface of the vehicle, and in this state, engages with the pulley 20 on the front side. Then, it is wound around the pulley 20 almost half a turn and is turned to the rear of the vehicle, and is guided rearward by the conduit 31. At that time, the conduit 31 can be guided into the vehicle through the curved portion 24 and the inner panel 11b of the vehicle body which are inclined in plan view. Accordingly, the pulley 20 and the pulley case 35 can be provided so as to be in close contact with the recess 25 of the inner panel 11b, and hardly protrude toward the inside of the vehicle. Therefore, passenger comfort is enhanced.
[0030]
In the door drive device 10 of FIG. 1, when the motor M of the cable drive device 22 rotates in one direction, the front cable 17 is wound around the drum 33, and the rear cable 18 is sent out from the drum, thereby looping the cables 17, 18. Is circulated in the direction of arrow F. Thereby, the roller bracket 16 moves forward, and the door 13 moves forward to close the opening. When the motor M rotates in the reverse direction, the loops of the cables 17 and 18 circulate in the direction of the arrow R contrary to the above, and the door 13 can move backward to open the opening. The operation of the door driving device itself is substantially the same as that of a conventional sliding door opening / closing device.
[0031]
As shown in FIG. 3, the second guide groove 46 of the pulley case 35 does not reach the side surface 43, but may be configured to open to the side surface 43. In that case, the cable can be easily attached. However, it becomes difficult to seal. Further, the second guide groove 46 is curved in a projecting manner so as to reach the back surface side of the pulley case 35, but as shown in FIG. 5, the cover 50 has a plate-like shape that fits with the second guide groove 46. It is also possible to form the protrusion 61 and bend the tip 62 of the protrusion 61 in a protruding shape so as to guide the cable 17 to the surface side. A groove having an arc-shaped cross section that slides with the cable 17 may be provided at the tip. Thus, when the cable is bent toward the cover 50 side, it is preferable to provide the same protrusions 47 as those described above on the surface side of the cover 50 to lengthen the curved portion.
[0032]
Further, in the above embodiment, the front pulley 20 and the pulley case 35 are arranged in parallel with the side surface of the vehicle (the axis is a right angle), but the front end swings toward the inside of the vehicle as shown in the plan view of FIG. 6a. In this way, it can be inclined around the vertical line. In this way, the cable 17 can be smoothly engaged from the roller bracket 16 to the pulley 20. Further, as indicated by an imaginary line U, the rear end can be inclined so as to swing toward the inside of the vehicle. However, in any case, the inclination angle is preferably about ± 20 degrees. This is because when the inclination angle is large, the protruding height of the pulley 20 or the pulley case 35 increases.
[0033]
Further, as shown in the side view of FIG. 6b, the pulley 20 may be inclined around the front and rear axes so that the upper end of the pulley 20 approaches the vehicle interior side. If it does in this way, the conduit | pipe 31 which comes out of the pulley case 35 can be arrange | positioned outside, and the space in a vehicle can be enlarged. On the contrary, as indicated by an imaginary line, the upper end of the pulley 20 can be inclined so as to be separated from the side wall. Furthermore, the inclination around the vertical line in FIG. 6a can be combined with the inclination around the longitudinal axis in FIG. 6b. In these cases, the oblique angle is preferably about ± 20 degrees.
[0034]
In the above embodiment, the pulley 20 and the pulley case 35 are arranged outside the outer panel 26 of the vehicle body. However, as shown in FIGS. 7a and 7b, the pulley 20 and the pulley case 35 may be arranged inside the outer panel 26, that is, inside the vehicle. it can. In this case, for example, as shown in FIG. 7b, a lean reinforcement (reinforcing material) 63 or a dedicated bracket is welded to the outer panel 26, and the pulley case 35 is screwed to the outer panel 26 using a weld bolt 64 and a nut 65. Such a method is adopted. At that portion, a large opening 66 through which the pulley bracket 35 is passed is provided in the inner panel 11b. The front cable 17 entering from the outside is changed in direction by the pulley 20 and reaches the cable driving device through the inside or outside of the inner panel 11b.
[0035]
Also in this embodiment, by arranging the pulley 20 in the vertical direction, the protruding height to the inside of the vehicle can be lowered, and the comfort in the vehicle is improved. In the case of this embodiment, the amount of protrusion to the inside becomes larger than when the pulley 20 is arranged outside the outer panel 26, but there is an advantage that the sealing property and the assembling property against the intrusion of water from the outside are improved. In addition, as shown by the imaginary line of FIG. 7a, the pulley 20 can also be provided in the clearance gap between the inner panel 11b and the outer panel 26. FIG.
[0036]
In the case of FIG. 2, the shaft portion 39 is provided integrally with the pulley case 35, but the shaft portion 39 may be a separate component. Further, in the pulley case 35 shown in FIG. 2 and the like, the opening is closed by the cover 50, but the cover 50 can be omitted when the opening side is fixed toward a mating member such as an outer panel. However, in that case, it is preferable to provide a seal packing between the mating member and the pulley case 35. Further, in some cases, the pulley case can be omitted and only the pulley 20 can be rotatably attached to the vehicle body by a shaft or a bracket.
[Brief description of the drawings]
FIG. 1 is a plan view of an essential part showing an embodiment of a door drive device of the present invention.
FIG. 2 is a perspective view of the door driving device before assembly around a pulley.
FIG. 3 is a front view of the door drive device with a cover removed after assembly around the pulley.
4 is a cross-sectional view taken along line IV-IV in FIG.
FIG. 5 is a schematic plan view showing another embodiment of the door drive device of the present invention.
FIGS. 6a and 6b are a schematic plan view and a schematic side view, respectively, showing still another embodiment of the door drive device of the present invention.
7a and 7b are a schematic plan view and a side view, respectively, showing still another embodiment of the door drive device of the present invention.
FIG. 8 is a schematic plan view showing an example of a conventional door driving device.
FIG. 9 is a cross-sectional view across a guide rail showing another example of a conventional door drive device.
FIG. 10 is a partially cutaway perspective view showing still another example of a conventional door drive device.
11 is a plan cross-sectional view of a main part of the door drive device of FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Door drive device 11 Car body 12 Guide rail 13 Door 14a, 14b Horizontal roller 16 Roller bracket 17 Front cable 18 Rear cable 20 Front pulley 21 Rear pulley 22 Cable drive device.
11a Side wall 11b Inner panel 24 Curved portion 25 Recessed portion 26 Outer panel 16a Traveling portion 16b Base portion 27, 28 Pin 31, 32 Conduit 33 Drum M Motor 34 Reducer 35 Pulley case 36 Boss portion 37 Rim portion 38 Annular groove 39 Recess 40 Axis Portion 41 attachment portion 42 hole 43 side surface 44 first guide groove 44a groove bottom 45 conduit attachment portion 46 second guide groove 46a groove bottom 47 protrusion portion 48 opening portion 49 shallow step portion 50 cover 51 hole 61 protrusion 63 lean hosement 64 weld Bolt 65 Nut 66 Opening

Claims (3)

A guide rail extending in the front-rear direction along the side wall of the vehicle and having a front end curved toward the inside of the vehicle;
A door bracket that supports the door of the vehicle and travels along the guide rail;
A pulley that is rotatably supported around an axis that intersects the side surface of the vehicle at a substantially right angle or an angle of 90 ± 20 degrees near the front end of the guide rail;
One end is locked to the door bracket, extends forward along the guide rail, is redirected rearward by the pulley, and the front cable reaches the cable driving device,
One end is locked to the door bracket, extends rearward along the guide rail, is turned around the rear of the guide rail, and the rear cable reaches the cable driving device,
A sliding door drive device for a vehicle, comprising: a guide that smoothly changes a direction of the front cable between a direction substantially parallel to the curved portion of the guide rail and a tangential direction of the pulley.   The sliding door drive device according to claim 1, wherein the pulley is rotatably supported in a pulley case having a recess for accommodating the pulley, and the guide is formed by a guide groove provided integrally with the pulley case. The sliding door drive device according to claim 2, wherein the guide groove extends to the back side of the pulley case.

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