JP5756448B2 - Pulley device - Google Patents

Description

  The present invention relates to a pulley apparatus that forms a sliding door opening / closing mechanism that opens and closes a sliding door provided on a side portion of a vehicle and converts the direction of a cable that pulls the sliding door.

  Conventionally, a relatively large opening is formed in a side portion of a vehicle such as a wagon car or a one-box car so as to make it easy for passengers to get on and off and load and unload luggage, and the opening is a sliding door provided with a roller assembly. It can be opened and closed by. The sliding door is heavy because it opens and closes a relatively large opening. Therefore, a vehicle equipped with a sliding door is equipped with a sliding door opening / closing mechanism that can automatically open and close the sliding door.

  The sliding door opening / closing mechanism includes a guide rail that guides the movement of the sliding door by rolling of the roller assembly, and the guide rail is provided in the vicinity of the opening so as to extend in the front-rear direction of the vehicle. On the vehicle front side of the guide rail, there is provided a retracting portion that is retracted so as to curve from the side of the vehicle toward the inside of the vehicle, so that the roller assembly is brought into the retracting portion just before the sliding door is fully closed. Following this rolling, the sliding door is pulled into the opening and is fully closed.

  Pulley devices for converting the direction of the cable that pulls the sliding door in the opening direction and the closing direction are provided on the front side and the rear side of the guide rail, respectively. The pulley device converts the direction of the cable so as to be directed toward the center of the guide rail, and the cable whose direction is changed by the pulley device is wound around a drum of a drive unit provided in the vehicle. Then, by driving the drive unit to rotate the drum forward or backward, the slide door is pulled in the opening direction or the closing direction by the cable.

  As such a sliding door opening / closing mechanism, for example, a technique described in Patent Document 1 is known. In the sliding door opening / closing mechanism described in Patent Document 1, the pulley device corresponding to the front side of the guide rail of the vehicle is arranged in the vehicle so that the axial direction of the pulley shaft is substantially in the front-rear direction of the vehicle. That is, the pulleys are arranged so that the radial direction of the pulleys is substantially in the vehicle width direction of the vehicle.

Japanese Patent Laying-Open No. 2005-213831 (FIGS. 4 and 7)

  By the way, since the slide door opening / closing mechanism pulls the slide door into the opening as described above, the guide rail forming the slide door opening / closing mechanism requires the pull-in portion as described above. Therefore, when applying to a small vehicle such as a light vehicle, the sliding door opening / closing mechanism must be downsized in order to secure a sufficiently large indoor space. In other words, it is possible to secure a sufficient indoor space by reducing the size of the slide door opening / closing mechanism around the guide rail, and thus the sliding door opening / closing mechanism can be easily applied to a small vehicle such as a light vehicle. become.

  However, according to the pulley apparatus described in Patent Document 1 described above, the pulley apparatus is arranged in the vehicle such that the radial direction of the pulley faces the substantially vehicle width direction of the vehicle. Here, the diameter dimension of the pulley is set to a somewhat large diameter dimension (for example, 5 cm) so as not to damage the cable. Therefore, in the pulley device described in Patent Document 1, the dimension (width dimension) along the vehicle width direction of the vehicle in the vicinity of the retracting portion of the sliding door opening / closing mechanism becomes relatively large, leading to a small vehicle such as a light vehicle. When applying the above, it has become necessary to further reduce the width dimension around the retracting portion in the sliding door opening and closing mechanism.

  An object of the present invention is to provide a pulley device that can be easily applied to a small vehicle such as a light vehicle by reducing a width dimension around a drawing portion in a sliding door opening / closing mechanism.

A pulley apparatus according to the present invention is a pulley apparatus that forms a slide door opening / closing mechanism that opens and closes a slide door provided on a side portion of a vehicle and converts a direction of a cable that pulls the slide door, and the movement of the slide door A pulley case provided so as to be opposed from the side of the guide rail to the inside of the vehicle from the vehicle width direction of the vehicle, and provided in the pulley case. A pulley shaft extending in the vehicle width direction, a pulley rotatably supported on the pulley shaft and having a pulley groove into which the cable enters, and the cable provided in the pulley case and drawn into the pulley case. , and a cable guide portion for bending towards the pulley groove, the cable guide portion with an arc-shaped convex portions on the surface of the arc-shaped convex portion The pulley case is formed from a case main body fixed to a vehicle body panel and a case cover closing the case main body, and the case main body is provided with the arc-shaped convex portion, and the case cover An arc-shaped concave portion is provided in the portion facing the arc-shaped convex portion of the cable, and a through-hole through which the pulley shaft is inserted is provided in the case body and the case cover, respectively. A screw hole through which a fixing screw for fixing the case cover to the case body is inserted into the case cover, and an engagement that engages with the case body from a direction intersecting the axial direction of the pulley shaft and parts, and wherein Rukoto provided.

  The pulley apparatus of the present invention is characterized in that the radius of curvature of the arcuate convex portion is set to the same radius of curvature as that of the pulley groove.

  In the pulley device of the present invention, the position of the top portion of the arc-shaped convex portion along the axial direction of the pulley shaft is set to a position for guiding the cable to the center position of the pulley groove along the axial direction of the pulley shaft. It is characterized by that.

  According to the pulley apparatus of the present invention, the pulley case is provided with a pulley shaft extending in the vehicle width direction of the vehicle, the pulley shaft is rotatably supported by the pulley shaft, and the pulley case further includes the pulley case. Since the cable guide portion that curves the cable drawn into the pulley groove is provided, the radial direction of the pulley can be directed in the front-rear direction of the vehicle that intersects the vehicle width direction of the vehicle. Therefore, the width dimension around the drawing-in portion in the sliding door opening / closing mechanism can be reduced, and can be easily applied to a small vehicle such as a light vehicle.

  According to the pulley device of the present invention, since the cable guide portion is an arc-shaped convex portion, and the cable is in sliding contact with the surface of the arc-shaped convex portion, the cable drawn into the pulley case is smoothly guided toward the pulley groove. can do. Therefore, it is possible to prevent the cable pulling resistance from increasing and prevent a large load from being applied to the drive unit that pulls the cable.

  According to the pulley device of the present invention, the pulley case is formed of a case main body fixed to the vehicle body panel and a case cover for closing the case main body, and the case main body is provided with an arc-shaped convex portion, and the case cover circle Since an arc-shaped concave portion that allows the cable to run along the arc-shaped convex portion is provided at a portion facing the arc-shaped convex portion, the cable can be easily inserted between the arc-shaped convex portion and the arc-shaped concave portion, and the cable to the pulley device Assembling property can be improved.

  According to the pulley device of the present invention, since the radius of curvature of the arc-shaped convex portion is set to the same radius of curvature as the radius of curvature of the pulley groove, the pulley case is more than necessary while suppressing the cable from being bent excessively. It can be prevented from becoming large.

  According to the pulley device of the present invention, the position of the top portion along the axial direction of the pulley shaft of the arc-shaped convex portion is set to a position for guiding the cable to the center position along the axial direction of the pulley shaft of the pulley groove. Can be guided from the arcuate convex portion to the normal position of the pulley groove. Thereby, it becomes difficult for the cable to slide in contact with other portions of the pulley, and as a result, the pulley can be prevented from being unevenly worn by the cable. Further, since the cable can be moved smoothly, it is possible to more reliably prevent a large load from being applied to the drive unit while suppressing the generation of abnormal noise.

It is a vehicle-mounted figure which shows the vehicle carrying the sliding door opening / closing mechanism provided with the pulley apparatus of this invention. It is a perspective view which shows the sliding door opening / closing mechanism of FIG. It is a fragmentary sectional view which shows the drive unit of the sliding door opening / closing mechanism of FIG. 2 in a partial cross section. It is a perspective view which expands and shows the pulley apparatus of the vehicle front side. FIG. 5 is a cross-sectional view taken along the front-rear direction and the width direction of the vehicle, illustrating the internal structure of the pulley apparatus of FIG. (A), (b) is a perspective view which respectively shows the front side and back side of the case main body which forms a pulley apparatus. (A), (b) is a perspective view which each shows the front side and back side of the case cover which forms a pulley apparatus. It is a disassembled perspective view explaining the assembly procedure of a pulley apparatus.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

  1 is a vehicle-mounted view showing a vehicle equipped with a sliding door opening / closing mechanism equipped with a pulley device of the present invention, FIG. 2 is a perspective view showing the sliding door opening / closing mechanism of FIG. 1, and FIG. 3 is a sliding door opening / closing mechanism of FIG. The partial sectional view which shows the drive unit of a mechanism in a partial cross section is each represented.

  As shown in FIG. 1, the vehicle 10 is a one-box type passenger vehicle, and a slide door 13 that opens and closes an opening 12 a formed in the side portion 12 is provided on a side portion 12 of a vehicle body 11 that forms the vehicle 10. Is provided. The slide door 13 includes a roller assembly 14, and the roller assembly 14 is guided by a guide rail 15 provided in the vehicle body 11 so as to extend in the front-rear direction of the vehicle 10. That is, the slide door 13 is guided by the guide rail 15 in the front-rear direction of the vehicle 10.

  The guide rail 15 includes a linear portion 15 a that extends in the front-rear direction of the vehicle 10, and a lead-in portion 15 b that extends in the vehicle width direction of the vehicle 10, that is, the direction intersecting with the front-rear direction of the vehicle 10 (vertical direction in FIG. 1). ing. The lead-in portion 15b is disposed on the front side of the vehicle 10, that is, in the vicinity of the opening 12a, and is provided so as to be drawn from the side portion 12 to the inside of the vehicle 10 (vehicle interior side). The pull-in portion 15b is formed in a substantially arc shape, so that the roller assembly 14 rolls following the pull-in portion 15b just before the slide door 13 is fully closed, and the slide door 13 is pulled into the opening 12a. It will be in a fully closed state (refer to the two-dot chain line in the figure).

  The vehicle body 11 is equipped with a sliding door opening / closing mechanism 16 for opening and closing the sliding door 13. As shown in FIG. 2, the sliding door opening / closing mechanism 16 includes a pair of cables 17, 18 each having one end connected to the roller assembly 14, and the cables 17, 18 on the rear side and the front side of the vehicle 10 of the guide rail 15. A pair of pulley devices 19 and 20 that change the direction of 18, that is, a moving direction, and a drive unit 21 that pulls the cables 17 and 18 are provided. The drive unit 21 is positioned at a substantially central portion along the longitudinal direction of the guide rail 15, and is fixed to the vehicle interior side of the vehicle body panel 11 a (see FIGS. 1 and 5) that forms the vehicle body 11.

  As shown in FIG. 3, the drive unit 21 includes an electric motor 22 as a drive source, and the output of the electric motor 22 is transmitted to the output shaft 23 through a speed reduction mechanism (not shown). It has become. A drum 24 formed in a substantially cylindrical shape is fixed to the output shaft 23, and the drum 24 rotates via the speed reduction mechanism and the output shaft 23 as the electric motor 22 is driven to rotate. Yes. The other end of each cable 17, 18 is fixed to the drum 24, and the other end of each cable 17, 18 led to the drive unit 21 is wound around the outer periphery of the drum 24 a plurality of times. ing.

  When the drum 24 rotates in the clockwise direction in the figure, the closed cable 18 is wound around the drum 24, and the open cable 17 is pulled out from the drum 24. As a result, the slide door 13 is pulled by the closing cable 18 and automatically closes. On the other hand, when the drum 24 rotates counterclockwise in the figure, the open-side cable 17 is wound around the drum 24 and the closed-side cable 18 is pulled out from the drum 24. As a result, the sliding door 13 is automatically pulled by being pulled by the opening-side cable 17.

  Here, as the electric motor 22, for example, a brushable DC motor or the like that can rotate in the forward and reverse directions is used, and the electric motor 22 is rotationally controlled by a control unit 25 including a CPU, a memory, and the like. It is like that.

  As shown in FIG. 2, a rear pulley device 19 is provided on the linear portion 15a of the guide rail 15 on the rear side of the vehicle 10, and the pulley device 19 is connected to the vehicle body by a fastening bolt or the like (not shown). It is fixed to the panel 11a. The pulley device 19 converts the direction of the open-side cable 17 by approximately 180 °. The other end of the cable 17 that is folded back from the rear side of the vehicle 10 is guided to the drive unit 21, and one end of the cable 17 is connected. The side is led to the roller assembly 14.

  On the other hand, on the vehicle interior side of the vehicle 10 in the retracting portion 15b of the guide rail 15, a front pulley device 20 is provided so as to face the retracting portion 15b from the vehicle width direction of the vehicle 10. The pulley device 20 is fixed to the vehicle body panel 11a by fastening bolts (not shown). The pulley device 20 converts the direction of the cable 18 on the closed side by approximately 90 °, guides the other end of the cable 18 turned back from the front side of the vehicle 10 to the drive unit 21, and ends one end of the cable 18. The side is led to the roller assembly 14.

  Here, the conversion angle of the direction of each cable 17 and 18 by each pulley apparatus 19 and 20 is set according to the mounting space with respect to the vehicle body 11 of the sliding door opening and closing mechanism 16. Moreover, as each cable 17 and 18, what coated the resin material (not shown) on the surface and gave the rust prevention process is used.

  A pair of outer tubes 26 and 27 are provided between the drive unit 21 and the pulley devices 19 and 20 so as to slidably cover the cables 17 and 18, respectively. And a resin layer and has flexibility. Resin cap members 28 and 29 for guiding the cables 17 and 18 from the pulley devices 19 and 20 to enter and exit are respectively attached to one end sides of the outer tubes 26 and 27. The one end side of 27 is being fixed to each pulley apparatus 19 and 20 via each cap member 28 and 29, respectively.

  As shown in FIG. 3, resin-made slide caps 30, 31 are fixed to the other end sides of the outer tubes 26, 27. The slide caps 30, 31 are fixed to the unit case 21 a of the drive unit 21. It can be moved forward and backward. Each of the slide caps 30 and 31 is urged in a direction to be pushed out from the unit case 21a by a spring 32 provided in the unit case 21a. As a result, the outer tubes 26 and 27 are pushed out of the unit case 21 a and bent between the drive unit 21 and the pulley devices 19 and 20.

  Then, each outer tube 26, 27 is bent, so that the movement path of each cable 17, 18 between the drive unit 21 and each pulley device 19, 20 is extended, and a predetermined tension is applied to each cable 17, 18. It is to be granted. That is, the slack of the cables 17 and 18 is removed by bending the outer tubes 26 and 27 with the spring 32.

  Next, the structure of the front pulley apparatus 20 to which the present invention is applied will be described in detail with reference to the drawings. In the present embodiment, as shown in FIG. 2, the structure of the front pulley apparatus 20 and the structure of the rear pulley apparatus 19 are different from each other. The present invention can be applied to the same configuration as the pulley device 20 on the side.

  4 is an enlarged perspective view of the pulley device on the front side of the vehicle, FIG. 5 is a cross-sectional view taken along the front-rear direction and the width direction of the vehicle, illustrating the internal structure of the pulley device of FIG. FIGS. 7A and 7B are perspective views showing the front side and the back side of the case main body forming the pulley device, and FIGS. 7A and 7B are perspective views showing the front side and the back side of the case cover forming the pulley device. Represents each.

  As shown in FIGS. 4 and 5, the pulley device 20 converts the direction of the cable 18 by approximately 90 °. Specifically, the pulley unit 20 drives the drive unit from the retracting portion 15 b (Y-axis direction) of the guide rail 15. The moving direction of the cable 18 is converted toward 21 (X-axis direction). The pulley device 20 includes a resin case body 40, a resin case cover 50, a metal pulley shaft 60, a resin pulley 70, and a rubber seal cover 80.

  The case main body 40 is formed in a predetermined shape by forming a pulley case CA together with the case cover 50 and injection-molding a resin material such as plastic. The case main body 40 is fixed to the vehicle body panel 11a and includes a flat main body 41 as shown in FIGS. 6 (a) and 6 (b). Attachment arms 42 and 43 for fixing the pulley device 20 to the vehicle body panel 11a are integrally provided at both longitudinal ends of the main body 41. One mounting arm 42 is provided with one through hole 42a through which the fastening bolt FB (see FIG. 5) passes, and the other mounting arm 43 is provided with two through holes 43a through which the fastening bolt FB passes. It has been. That is, the pulley device 20 is firmly fixed to the vehicle body panel 11a via the three fastening bolts FB. Further, the main body 41 is provided with a pair of screw holes 41 a so as to face each other with the first pulley accommodating portion 44 interposed therebetween, and a fixing screw for fixing the case cover 50 to the case main body 40 in each screw hole 41 a. The FS (see FIGS. 4 and 8) is screwed.

  On one side of the attachment arm 42 along the longitudinal direction of the main body 41, a substantially cylindrical first pulley accommodating portion 44 that is thinned toward the thickness direction of the main body 41 is integrally provided. The first pulley accommodating portion 44 includes a bottom portion 44 a, and a through hole 44 b that penetrates in the thickness direction of the main body portion 41 is formed at a substantially central portion of the bottom portion 44 a. The pulley shaft 60 is fixed to the through hole 44b by press-fitting. By fixing the pulley shaft 60 to the through hole 44b in this manner, the pulley shaft 60 is secured to the vehicle width of the vehicle 10 in a state where the pulley device 20 is fixed to the vehicle body panel 11a as shown in FIGS. The radial direction of the pulley 70 that extends in the direction (Y-axis direction) and is rotatably supported by the pulley shaft 60 is directed in the front-rear direction (X-axis direction) of the vehicle 10. In the figure, the Z-axis direction corresponds to the vertical direction of the vehicle 10.

  Further, the first pulley housing portion 44 has a first cap mounting portion 45 to which the cap member 29 (see FIG. 4) is mounted, and the introduction of the cable 18 from the drawing portion 15b into the first pulley housing portion 44. A first introduction guide 46 for guiding is provided integrally.

  The first cap mounting portion 45 is at a predetermined angle with respect to the first pulley housing portion 44 so as to face the other mounting arm 43 side, that is, the drive unit 21 side with the pulley device 20 fixed to the vehicle body panel 11a. It is provided so as to be inclined. As a result, the outer tube 27 including the cable 18 can be easily routed to the vehicle 10 (cable routing operation). Here, the inclination angle of the first cap mounting portion 45 with respect to the first pulley accommodating portion 44 is set according to the mounting space of the slide door opening / closing mechanism 16 with respect to the vehicle body 11 and the like. That is, by preparing the first cap mounting portion 45 with different inclination angles with respect to the first pulley accommodating portion 44, it is possible to deal with various vehicle bodies having different mounting spaces and the like.

  A first step 45 a is provided on the inner side of the first cap mounting part 45 so as to protrude to the inner side of the first cap mounting part 45. The cap member 29 is engaged with the first step portion 45a, so that the cap member 29 is prevented from falling out of the pulley case CA with the case cover 50 attached to the case body 40. It is preventing.

  As shown in FIG. 6B, the first introduction guide portion 46 is formed in a substantially rectangular parallelepiped shape, and is provided so as to protrude on the opposite side to the first pulley housing portion 44 side along the thickness direction of the main body portion 41. . A panel-facing surface 46 a is provided on the vehicle body panel 11 a side of the first introduction guide portion 46, and an arcuate protrusion that protrudes toward the inside of the first introduction guide portion 46 inside the first introduction guide portion 46. A portion (cable guide portion) 46b is provided.

  As shown in FIG. 5, the arc-shaped convex portion 46b is provided between the panel facing surface 46a and the first pulley accommodating portion 44, and the cable 18 is in sliding contact with the surface of the arc-shaped convex portion 46b. Yes. The arc-shaped convex portion 46b is formed in an approximately 1/4 (approximately 90 °) arc shape and has a substantially slide-like shape, and its radius of curvature R1 is the radius of curvature R2 of the pulley groove 72 provided in the pulley 70 (see FIG. 4). ) And the same radius of curvature (R1 = R2). Thus, the cable 18 drawn into the pulley case CA is curved toward the pulley groove 72 by sliding the cable 18 on the surface of the arcuate convex portion 46b.

  Here, the pulley 70 has a flange portion 71 and a pulley groove 72 into which the cable 18 enters, and the curvature radius R2 of the pulley groove 72 is set to a minimum curvature radius that does not cause the cable 18 to be bent and damaged. Is set. Thereby, the pulley 70 is suppressed to the minimum necessary size, and the pulley device 20 is reduced in size. That is, in the present embodiment, the radius of curvature R1 of the arc-shaped convex portion 46b is set based on the radius of curvature R2 of the pulley groove 72, so that the cable 18 is not damaged and the pulley device 20 is more than necessary. It is prevented from becoming large.

  The height dimension from the bottom 44a along the axial direction of the pulley shaft 60 of the arc-shaped convex portion 46b is set to H. As a result, the position of the apex T (black dot portion in the figure) of the arc-shaped convex portion 46 b along the axial direction of the pulley shaft 60 is changed to the center position C along the axial direction of the pulley shaft 60 in the pulley groove 72 of the pulley 70. It is a position that can be guided. Thus, by setting the height dimension H (the position of the top portion T) of the arc-shaped convex portion 46 b corresponding to the center position C of the pulley groove 72, the cable 18 that slides on the surface of the arc-shaped convex portion 46 b. Can be reliably guided to the normal position of the pulley groove 72, that is, the center position C. Thus, the cable 18 is prevented from slidingly contacting the flange portion 71 of the pulley 70, that is, the other portion excluding the pulley groove 72 of the pulley 70.

  As described above, the arc-shaped convex portion 46 b is provided between the panel facing surface 46 a and the first pulley accommodating portion 44, so that the cable 18 between the pull-in portion 15 b of the guide rail 15 and the pulley groove 72 is routed. The lead-in portion 15b (in the Y-axis direction) is bent at an angle of approximately 90 ° from the pulley groove 72 (in the X-axis direction). Further, as shown in FIG. 5, the pulley 70 converts the direction of the cable 18 curved by the arcuate convex portion 46 b by approximately 180 ° and directs it toward the drive unit 21.

  The case cover 50 is formed in a predetermined shape by forming a pulley case CA together with the case body 40 and injection-molding a resin material such as plastic. The case cover 50 closes the case main body 40 and includes a second pulley accommodating portion 51 as shown in FIG. Similar to the first pulley accommodating portion 44 (see FIG. 6) of the case body 40, the second pulley accommodating portion 51 is formed in a substantially cylindrical shape that becomes thinner toward the thickness direction of the case cover 50. The second pulley accommodating portion 51 includes a bottom portion 51a, and a through hole 51b penetrating in the thickness direction of the case cover 50 is formed at a substantially central portion of the bottom portion 51a. When the second pulley accommodating portion 51 and the first pulley accommodating portion 44 are brought together, the pulley shaft 60 is inserted into the through hole 51b.

  Further, the case cover 50 is provided with a pair of screw holes 52 so as to face each other with the second pulley accommodating portion 51 interposed therebetween, and a fixing screw for fixing the case cover 50 to the case main body 40 in each screw hole 52. The FS (see FIGS. 4 and 8) is inserted. Further, the case cover 50 is provided with a second cap mounting portion 53 to which the cap member 29 (see FIG. 4) is mounted, and a second guide for guiding the cable 18 from the retracting portion 15b into the second pulley accommodating portion 51. 2 introduction guide part 54 is provided.

  The second cap mounting portion 53 is opposed to the first cap mounting portion 45 of the case body 40, and is similar to the first cap mounting portion 45 (see FIG. 6) to the vehicle body panel 11a of the pulley device 20. It faces to the drive unit 21 side under the fixed state. In addition, a second stepped portion 53 a is provided on the inner side of the second cap mounting portion 53, that is, on the surface facing the case body 40, so as to protrude to the inner side of the second cap mounting portion 53. Similar to the first step 45a of the case body 40, the cap member 29 is engaged with the second step 53a.

  As shown in FIG. 7B, the second introduction guide portion 54 is provided so as to protrude toward the second pulley accommodating portion 51 along the thickness direction of the case cover 50. The second introduction guide portion 54 is provided with an arcuate recess portion 54a that is recessed toward the second pulley accommodating portion 51 side. As shown in FIG. 5, the arcuate recess 54 a faces the arcuate protrusion 46 b with a predetermined interval in a state where the case cover 50 is assembled to the case body 40.

  Here, the distance between the arc-shaped concave portion 54a and the arc-shaped convex portion 46b is set to be larger than the diameter dimension of the cable 18, and when the pulley device 20 is operated, the cable 18 is connected to the surface of the arc-shaped concave portion 54a. There is no sliding contact. Thus, by providing the arc-shaped concave portion 54a so as to face the arc-shaped convex portion 46b, the cable 18 can be easily inserted between the arc-shaped convex portion 46b and the arc-shaped concave portion 54a. Assembling property to the pulley device 20 is improved.

  As shown in FIG. 5, the seal cover 80 is formed in a predetermined shape by injection molding or the like of an elastic material such as rubber, and includes a mounting body portion 81, a panel contact portion 82, and a bellows portion 83. The mounting body portion 81 is mounted on the first introduction guide portion 46, and the panel contact portion 82 is in close contact with the vehicle body panel 11a. The cable 18 is in sliding contact with the bellows portion 83, and the bellows portion 83 is swingable by being elastically deformed with respect to the mounting body portion 81 and the panel contact portion 82. By providing the seal cover 80 in this manner, rain water, dust, and the like from the outside of the pulley device 20 in the vehicle cabin, that is, from the guide rail 15 side, are prevented from entering the inside of the pulley device 20. Thereby, the grease (not shown) applied between the pulley shaft 60 and the pulley 70 is held for a long period of time, and the pulley 70 can be smoothly operated.

  Next, the assembly procedure of the pulley apparatus 20 formed as described above will be described in detail with reference to the drawings. FIG. 8 is an exploded perspective view for explaining the assembly procedure of the pulley device.

  First, as shown in FIG. 8, the base end side (lower side in the figure) of the pulley shaft 60 is press-fitted into a through hole 44b provided in the bottom 44a of the case body 40 and fixed. Next, the cap member 29 through which the cable 18 is inserted is attached to the first cap attachment portion 45. Thereafter, the pulley 70 is rotatably supported on the pulley shaft 60 while the cable 18 is placed along the pulley groove 72 of the pulley 70. At this time, grease is applied to the sliding portion between the pulley shaft 60 and the pulley 70.

  Next, the case cover 50 is prepared, and the second pulley accommodating portion 51 of the case cover 50 and the first pulley accommodating portion 44 of the case main body 40 are opposed to each other. Then, the case cover 50 faces the case body 40, and the tip end side (upper side in the figure) of the pulley shaft 60 is inserted into the through hole 51b provided in the bottom 51a (see FIG. 7B) of the case cover 50. . At this time, while the arc-shaped convex portion 46b of the case main body 40 and the arc-shaped concave portion 54a of the case cover 50 are opposed to each other (see FIG. 5), the cable 18 is disposed therebetween, and each screw hole of the case main body 40 is further disposed. 41a and each screw hole 52 of case cover 50 are made to oppose.

  Thereafter, each fixing screw FS is inserted into each screw hole 52 and screwed to each screw hole 41a using a fastening tool (not shown). Next, the retaining ring ST is attached to the tip of the pulley shaft 60. Thereby, the attachment of the case cover 50 to the case body 40 is completed. Thereafter, with the cable 18 inserted through the bellows portion 83 (see FIG. 5) of the seal cover 80, the mounting body portion 81 of the seal cover 80 is mounted on the first introduction guide portion 46 of the case body 40, Thereby, the pulley apparatus 20 is completed. The sliding door opening / closing mechanism 16 (see FIG. 2) including the pulley device 20 is mounted at a predetermined location of the vehicle 10 in the vehicle body manufacturer.

  Here, for example, when only the cable 18 is replaced after maintenance of the pulley device 20, the old cable 18 is removed from the pulley device 20 without disassembling the pulley device 20, and the bellows portion 83 side or the cap is removed. By inserting a new cable 18 from the member 29 side, it can be easily replaced.

  Specifically, when the new cable 18 is inserted from the bellows portion 83 side, the end portion of the cable 18 is inserted into the bellows portion 83 so that the end portion of the cable 18 has an arcuate recess 54a (see FIG. 5). To be directed to the pulley 70. Thereafter, the end portion of the cable 18 moves along the inside of the first pulley housing portion 44 and the second pulley housing portion 51 and is inserted into the cap member 29.

  On the other hand, when the new cable 18 is inserted from the cap member 29 side, the end of the cable 18 is inserted into the cap member 29 so that the end of the cable 18 becomes the first pulley accommodating portion 44 and the second pulley accommodating portion. 51 moves along the inside. Thereafter, the end of the cable 18 is guided by the arcuate recess 54 a (see FIG. 5), directed toward the bellows portion 83, and inserted through the bellows portion 83.

  As described above in detail, according to the pulley device 20 according to the present embodiment, the pulley case 60 is provided in the pulley case CA so as to extend in the vehicle width direction of the vehicle 10, and the pulley 70 is attached to the pulley shaft 60. The pulley case CA is provided with an arcuate protrusion 46b that bends the cable 18 drawn into the pulley case CA toward the pulley groove 72. Thereby, the radial direction of the pulley 70 can be directed to the front-rear direction of the vehicle 10 that intersects the vehicle width direction of the vehicle 10. Accordingly, the width of the slide door opening / closing mechanism 16 around the retracting portion 15b is reduced, and the slide door opening / closing mechanism 16 can be easily applied to a small vehicle such as a light vehicle.

  Further, according to the pulley device 20 according to the present embodiment, the cable 18 is in sliding contact with the surface of the arc-shaped convex portion 46b, so that the cable 18 drawn into the pulley case CA is smoothly guided toward the pulley groove 72. can do. Accordingly, it is possible to suppress an increase in the traction resistance of the cable 18 and prevent a large load from being applied to the drive unit 21 that pulls the cable 18.

  Furthermore, according to the pulley apparatus 20 according to the present embodiment, the pulley case CA is formed from the case main body 40 fixed to the vehicle body panel 11a and the case cover 50 that closes the case main body 40. Since the arc-shaped convex part 46b is provided on the opposite side of the case cover 50 to the arc-shaped convex part 46b, the cable 18 is provided with the arc-shaped convex part 46b. It is easy to insert between the portion 46b and the arcuate recess 54a, and the assembling property of the cable 18 to the pulley device 20 can be improved.

  Further, according to the pulley device 20 according to the present embodiment, the radius of curvature R1 of the arc-shaped convex portion 46b is set to the same radius of curvature (R1 = R2) as the radius of curvature R2 of the pulley groove 72, so that the cable 18 It is possible to prevent the pulley case CA from becoming unnecessarily large while suppressing the forcible bending.

  Furthermore, according to the pulley device 20 according to the present embodiment, the position of the apex T along the axial direction of the pulley shaft 60 of the arc-shaped convex portion 46b, the cable 18 along the axial direction of the pulley shaft 60 of the pulley groove 72. Since the guide position is set to the center position C, the cable 18 can be guided from the arcuate convex portion 46b to the normal position of the pulley groove 72. As a result, the cable 18 is less likely to be in sliding contact with other portions of the pulley 70 (such as the flange portion 71), and as a result, the pulley 70 can be prevented from being unevenly worn by the cable 18. Moreover, since the cable 18 can be moved smoothly, it is possible to more reliably prevent a large load from being applied to the drive unit 21 while suppressing the generation of abnormal noise.

  It goes without saying that the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention. For example, in the above embodiment, the present invention is applied to the pulley device 20 of the slide door opening / closing mechanism 16 that opens and closes the slide door 13 on the right side of the vehicle 10, but the present invention is not limited to this. The present invention can also be applied to a pulley device (front side / rear side) of a slide door opening / closing mechanism that opens and closes a slide door (not shown) on the left side of the vehicle 10.

DESCRIPTION OF SYMBOLS 10 Vehicle 11 Car body 11a Car body panel 12 Side part 12a Opening part 13 Slide door 14 Roller assembly 15 Guide rail 15a Linear part 15b Pull-in part 16 Slide door opening / closing mechanism 17 Cable (open side)
18 Cable (closed side)
19 Pulley device (rear side)
20 Pulley device (front side)
21 drive unit 21a unit case 22 electric motor 23 output shaft 24 drum 25 control unit 26, 27 outer tube 28, 29 cap member 30, 31 slide cap 32 spring 40 case body (pulley case)
41 Main body portion 41a Screw hole 42, 43 Mounting arm 42a, 43a Through hole 44 First pulley housing portion 44a Bottom portion 44b Through hole 45 First cap mounting portion 45a First step portion 46 First introduction guide portion 46a Panel facing surface 46b Circle Arc-shaped convex part (cable guide part)
50 Case cover (pulley case)
51 Second pulley housing portion 51a Bottom portion 51b Through hole 52 Screw hole 53 Second cap mounting portion 53a Second step portion 54 Second introduction guide portion 54a Arc-shaped recess 60 Pulley shaft 70 Pulley 71 Flange portion 72 Pulley groove 80 Seal cover 81 Mounting body part 82 Panel adhesion part 83 Bellows part CA Pulley case FB Fastening bolt FS Fixing screw ST Retaining ring

Claims (3)

A pulley device that forms a sliding door opening / closing mechanism that opens and closes a sliding door provided on a side portion of a vehicle, and converts a direction of a cable that pulls the sliding door,
A pulley case provided so as to be opposed from the vehicle width direction of the vehicle with respect to a retracted portion drawn into the vehicle from the side portion of the guide rail that guides the movement of the slide door;
A pulley shaft provided inside the pulley case and extending in a vehicle width direction of the vehicle;
A pulley rotatably supported on the pulley shaft and having a pulley groove into which the cable enters;
A cable guide portion provided in the pulley case and configured to curve the cable drawn into the pulley case toward the pulley groove;
Equipped with a,
The cable guide portion is an arc-shaped convex portion, and the cable is brought into sliding contact with the surface of the arc-shaped convex portion,
The pulley case is formed from a case main body fixed to the vehicle body panel and a case cover closing the case main body, the arc main body is provided with the arc-shaped convex portion, and the arc-shaped convex portion of the case cover An arc-shaped concave portion that causes the cable to run along the arc-shaped convex portion is provided in the opposite portion of
The case body and the case cover are each provided with a through-hole through which the pulley shaft is inserted,
A screw hole through which a fixing screw for fixing the case cover to the case body is inserted into the case cover, and an engaging portion that engages with the case body from a direction intersecting the axial direction of the pulley shaft. When, a pulley device according to claim Rukoto provided. 2. The pulley apparatus according to claim 1 , wherein the radius of curvature of the arc-shaped convex portion is set to the same radius of curvature as that of the pulley groove. 3. The pulley device according to claim 1 , wherein the position of the top portion of the arcuate convex portion along the axial direction of the pulley shaft is guided to the center position of the pulley groove along the axial direction of the pulley shaft. A pulley apparatus characterized by being set to a position.

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