Guide pulley unit and door drive device

Abstract

To provide a guide pulley unit whose housing and cover can be simplified in structure.SOLUTION: A guide pulley unit 300 includes: a first guide pulley 310 and a second guide pulley 320 around which a first cable 61 and a second cable 62 are wound; a housing 340 which rotatably supports the first guide pulley 310 and the second guide pulley 320; a cover 350 which cooperates with the housing 340 to cover the first guide pulley 310 and the second guide pulley 320; and a path forming member 360 which is so disposed between the housing 340 and the cover 350 as to be between the first guide pulley 310 and the second guide pulley 320. The path forming member 360 has a first guide groove 361 provided in a portion facing the cover 350 as a movement path of the first cable 61, and a second guide groove 362 provided in a portion facing the housing 340 as a movement path of the second cable 62.SELECTED DRAWING: Figure 15

Description

[Technical field]

[0001] The present invention relates to a guide pulley unit and a door driving device. [Background technology]

[0002] For example, Patent Document 1 discloses a vehicle including a vehicle body having a door opening, a sliding door for opening and closing the door opening, and a door drive device for driving the sliding door. The vehicle body has an upper rail, a center rail, and a lower rail that define the moving direction of the sliding door. The sliding door opens and closes the door opening by moving along the upper rail, the center rail, and the lower rail.

[0003] The door drive device has a first cable, the first end of which is fixed near the front end of the center rail, and a second cable, the first end of which is fixed near the rear end of the center rail. The door drive device also has a drum unit that winds up one of the first cable and the second cable and pays out the other, and a guide pulley unit that guides the first cable and the second cable extending from the drum unit to the front end and rear end of the center rail.

[0004] The guide pulley unit has two pulleys around which the first cable and the second cable extending from the drum unit are wound, and a housing member that houses the two pulleys with their rotation axes spaced apart. The housing member is provided with a first wiring path that guides the first cable between the two pulleys, and a second wiring path that guides the second cable between the two pulleys. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2014-163066 A Summary of the Invention [Problem to be solved by the invention]

[0006] In the above-described guide pulley unit, the housing member includes a resin cover in which the first and second wiring paths are provided, and a metal housing that covers the two pulleys together with the resin cover. In other words, in the above-described guide pulley unit, the shape of the resin cover is likely to be complicated because the resin cover is provided with the first and second wiring paths. [Means for solving the problem]

[0007] The means for solving the above problems and their effects will be described below. The guide pulley unit that solves the above problem is applied to a vehicle that includes a car body having a rail and a door that moves along the rail, and guides a first cable that is wound when a drum rotates in one direction and a second cable that is wound when the drum rotates in the other direction toward both ends of the rail, respectively. The guide pulley unit includes a first guide pulley around which the first cable and the second cable extending from the drum are wound, and a second cable extending from the first guide pulley. The above a second guide pulley around which a first cable and the second cable are wound, a housing that rotatably supports the first guide pulley and the second guide pulley, a cover that covers the first guide pulley and the second guide pulley together with the housing, and a path forming member that is disposed between the first guide pulley and the second guide pulley and between the housing and the cover, and the path forming member defines a path for the first cable to travel. housing and a first guide groove provided in a portion facing the first guide groove and the second guide groove as a moving path of the second cable. cover and a second guide groove provided in a portion facing the first guide groove.

[0008] In the guide pulley unit having the above configuration, the path forming member having the first guide groove and the second guide groove is configured separately from the housing and the cover. Therefore, the configuration of the housing and the cover in the guide pulley unit is simplified. Furthermore, in the path forming member, the first guide groove is provided in a portion facing the housing, and the second guide groove is provided in a portion facing the cover. Therefore, for example, it is easier to form the first guide groove and the second guide groove compared to a comparative example in which both the first guide groove and the second guide groove are provided in a portion of the cover facing the housing.

[0009] In the above guide pulley unit, it is preferable that the cover has at least one of a first guide surface that guides the first cable traveling in the first guide groove toward the first guide pulley, and a second guide surface that guides the second cable traveling in the second guide groove toward the first guide pulley.

[0010] A guide pulley unit including a cover having a first guide surface can provide the following effect when a first cable is routed. That is, the first cable traveling in the first guide groove is easily guided to the first guide pulley by the first guide surface. Therefore, the guide pulley unit makes it easy to route the first cable.

[0011] In the above guide pulley unit, it is preferable that the path forming member has a plurality of engagement shafts extending toward the cover, and the cover has a plurality of engagement holes into which the plurality of engagement shafts are respectively inserted.

[0012] The guide pulley unit having the above configuration can position the path forming member with respect to the cover by inserting the engagement shaft of the path forming member into the engagement hole of the cover. When viewed in a planar view from the direction in which the rotational axes of the first guide pulley and the second guide pulley extend, it is preferable that at least one of the multiple engagement holes is positioned overlapping a line segment connecting the rotational axis of the first guide pulley and the rotational axis of the second guide pulley.

[0013] In the guide pulley unit having the above configuration, when the path forming member is positioned relative to the cover, the relative positional relationship between the first guide pulley and the second guide pulley and the first guide groove and the second guide groove is less likely to shift, making it easier to route the first cable and the second cable in the guide pulley unit.

[0014] It is preferable that the guide pulley unit includes a collar through which a fastening member is inserted, and the path forming member has a retaining hole that retains the collar at a position offset from the first guide groove and the second guide groove.

[0015] For example, in the case of the comparative example in which the cover has a retaining hole for holding the collar, it is necessary to provide an insertion hole for passing the collar in the path forming member. In contrast, the guide pulley unit of the above configuration has a retaining hole for holding the collar in the path forming member. Here, if the outer diameter of the collar is constant, the inner diameter of the retaining hole in the path forming member of the above configuration will be smaller than the inner diameter of the insertion hole in the path forming member of the comparative example. Therefore, the guide pulley unit can increase the degree of freedom in arranging the first guide groove and the second guide groove by the amount that the inner diameter of the hole provided in the path forming member can be reduced.

[0016] A door driving device that solves the above-mentioned problem includes the above-mentioned guide pulley unit, a drum unit having the first cable and the second cable, the drum, a support panel that rotatably supports the drum, and a drive unit that drives the drum, and a relay pulley unit having a first relay pulley that guides the first cable extending from the drum toward the first guide pulley, a second relay pulley that guides the second cable extending from the drum toward the first guide pulley, and a base plate that rotatably supports the first relay pulley and the second relay pulley.

[0017] The door drive device can obtain the same effects as those of the above-mentioned guide pulley unit. In the above door driving device, it is preferable that the drum unit has a first cable guide that protects the first cable extending toward the first relay pulley and a second cable guide that protects the second cable extending toward the second relay pulley, and that a first end of the first cable guide and a first end of the second cable guide engage with the support panel, and a second end of the first cable guide and a second end of the second cable guide engage with the base plate.

[0018] The door drive device having the above configuration can protect the first cable and the second cable with the first cable guide and the second cable guide that engage with the support panel and the base plate. In other words, the door drive device can protect the first cable and the second cable extending between the support panel and the base plate with a simple configuration. Effect of the Invention

[0019] The guide pulley unit having the above configuration can simplify the configuration of the housing and the cover. [Brief description of the drawings]

[0020] [Figure 1] 1 is a schematic diagram of a vehicle including a door drive device according to an embodiment; [Diagram 2] FIG. [Diagram 3] FIG. 2 is a perspective view of a door body of the vehicle. [Figure 4] FIG. 2 is a plan view of the center hinge unit of the vehicle. [Diagram 5] FIG. [Figure 6] FIG. 2 is an exploded perspective view of a drum unit of the door drive device. [Figure 7] FIG. 2 is an exploded perspective view of a drum unit of the door drive device. [Figure 8] FIG. 4 is an exploded perspective view of a relay pulley unit of the door drive device. [Figure 9] FIG. 4 is an exploded perspective view of a relay pulley unit of the door drive device. [Figure 10]FIG. 4 is an exploded perspective view of a guide pulley unit of the door drive device. [Figure 11] FIG. 4 is an exploded perspective view of a guide pulley unit of the door drive device. [Figure 12] FIG. 4 is a plan view of a guide pulley unit of the door drive device. [Figure 13] FIG. 4 is a cross-sectional view of an intermediate pulley unit of the door drive device. [Figure 14] FIG. 4 is a bottom view of the guide pulley unit of the door drive device. [Figure 15] FIG. 4 is a plan view of a guide pulley unit of the door drive device. [Figure 16] FIG. 4 is a cross-sectional view of a drum unit of the door drive device. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] Hereinafter, a vehicle including a door drive device according to one embodiment will be described. <Vehicle 10> As shown in FIG. 1, a vehicle 10 includes a vehicle body 20 having a door opening 21 on the side thereof, a sliding door 30 for opening and closing the door opening 21, and a door drive device 50 for driving the sliding door 30.

[0022] In the following description, the width direction of the vehicle 10 is also referred to as the "width direction", the front-rear direction of the vehicle 10 is also referred to as the "front-rear direction", and the up-down direction of the vehicle 10 is also referred to as the "up-down direction". In addition, in the width direction, the direction toward the inside of the vehicle 10 is also referred to as the inward direction, and in the width direction, the direction toward the outside of the vehicle 10 is also referred to as the outward direction. In the drawings, the width direction is the direction in which the X-axis extends, the front-rear direction is the direction in which the Y-axis extends, and the up-down direction is the direction in which the Z-axis extends.

[0023] <Vehicle 20> As shown in FIG. 1, the vehicle body 20 includes an upper rail 22, a center rail 23, and a lower rail 24 that define the moving direction of the sliding door 30. The upper rail 22, the center rail 23, and the lower rail 24 extend in the front-rear direction. In more detail, in a plan view in the up-down direction, the upper rail 22, the center rail 23, and the lower rail 24 extend linearly forward and then extend in an arc shape inward in the width direction as they move forward. The upper rail 22 is installed above the door opening 21, the center rail 23 is installed behind the door opening 21, and the lower rail 24 is installed below the door opening 21. The center rail 23 is located between the upper rail 22 and the lower rail 24 in the up-down direction.

[0024] <Sliding Door 30> As shown in FIGS. 1 and 2, the sliding door 30 includes a door body 40 that closes the door opening 21, and an upper hinge unit 32, a center hinge unit 33, and a lower hinge unit 34 that form connection portions with the vehicle body 20.

[0025] As shown in FIG. 3, the door body 40 has an outer panel 41 and an inner panel 42. The outer panel 41 and the inner panel 42 are thin plate-like. An internal space 43 for accommodating various components is defined between the outer panel 41 and the inner panel 42. The inner panel 42 has an accommodating hole 44 penetrating inward in the width direction and an exposure hole 45 penetrating rearward. The accommodating hole 44 is a hole for disposing a part of the door drive device 50 in the internal space 43. The exposure hole 45 is a hole for passing a part of the door drive device 50 disposed in the internal space 43 to the rear of the door body 40.

[0026] 1, the upper hinge unit 32 is fixed to a position near the front end and toward the upper end of the door body 40. The center hinge unit 33 is fixed to a position near the rear end and toward the middle in the up-down direction of the door body 40. The lower hinge unit 34 is fixed to a position near the front end and toward the lower end of the door body 40.

[0027] As shown in Figs. 2 and 4, the center hinge unit 33 has a fixed hinge 35 fixed to a door body 40, a movable hinge 36 supported by the fixed hinge 35 so as to be able to swing, and two guide rollers 37 and a load roller 38 supported by the movable hinge 36 so as to be able to rotate. The rotation axes of the two guide rollers 37 and the rotation axis of the load roller 38 are perpendicular to each other. As shown in Fig. 4, the two guide rollers 37 and the load roller 38 are engaged with the center rail 23. When the sliding door 30 is opened or closed, the two guide rollers 37 and the load roller 38 move along the center rail 23. At this time, the two guide rollers 37 restrict the movement of the door body 40 in a direction perpendicular to the longitudinal direction of the center rail 23, and the load roller 38 supports the weight of the door body 40.

[0028] Although not shown in the figures, the upper hinge unit 32 and the lower hinge unit 34 have substantially the same configuration as the center hinge unit 33. In other words, the door main body 40 is supported on the vehicle body 20 via the upper hinge unit 32, the center hinge unit 33, and the lower hinge unit 34. The upper hinge unit 32, the center hinge unit 33, and the lower hinge unit 34 move relative to the upper rail 22, the center rail 23, and the lower rail 24, respectively, whereby the sliding door 30 moves.

[0029] <Door drive unit 50> 5, the door drive device 50 includes a first cable 61, a second cable 62, a drum unit 100, an intermediate pulley unit 200, and a guide pulley unit 300. In the door drive device 50, the drum unit 100 and the intermediate pulley unit 200 are fixed to the inner panel 42 of the sliding door 30. The guide pulley unit 300 is fixed to the movable hinge 36 of the center hinge unit 33 of the sliding door 30.

[0030] The first cable 61 and the second cable 62 will be described. The first cable 61 and the second cable 62 are power transmission members that transmit power for opening and closing the sliding door 30. A first end of the first cable 61 is fixed near the front end of the center rail 23, and a first end of the second cable 62 is fixed near the rear end of the center rail 23. A second end of the first cable 61 and a second end of the second cable 62 extend toward the drum unit 100.

[0031] The drum unit 100 will now be described. 6 and 7, the drum unit 100 includes a drum 110 that winds up the first cable 61 and the second cable 62, a drive unit 120 that drives the drum 110, and a support panel 130 to which the drive unit 120 is attached. The drum unit 100 includes a drum cover 140 that covers the drum 110, a panel cover 150 that covers the support panel 130 together with the drive unit 120, and cable guides 161 and 162 that protect the first cable 61 and the second cable 62, respectively. As shown in FIG. 5, the drum unit 100 includes a cap 170 that closes the gap between the panel cover 150 and the cable guides 161 and 162, and a seal member 180 that closes the gap between the panel cover 150 and the inner panel 42.

[0032] As shown in FIG. 6 and FIG. 7, the drum 110 has a cylindrical shape. The second end of the first cable 61 and the second end of the second cable 62 are fixed to the drum 110. The drum 110 winds up the first cable 61 and the second cable 62. The rotation axis of the drum 110 extends in the plate thickness direction of the support panel 130. In the drum 110, the winding direction of the first cable 61 is the opposite direction to the winding direction of the second cable 62. Therefore, when the drum 110 rotates in one direction, the first cable 61 is wound up and the second cable 62 is unwound. On the other hand, when the drum 110 rotates in the other direction, which is the opposite direction to the one direction, the second cable 62 is wound up and the first cable 61 is unwound. Note that the second end of the first cable 61 and the second end of the second cable 62 may be connected inside the drum 110.

[0033] The driving unit 120 has a motor 121, an output shaft 122 that drives the drum 110, and a motor case 123 that houses the components of the driving unit 120. Although not shown, the driving unit 120 has a transmission mechanism that transmits the power of the rotating shaft of the motor 121 to the output shaft 122. The output shaft 122 is connected to the drum 110. Therefore, when the output shaft 122 rotates, the drum 110 rotates. The motor case 123 supports the motor 121 and houses a transmission mechanism (not shown).

[0034] The support panel 130 is a plate-like member made of metal. The support panel 130 is formed, for example, by pressing a metal plate. The support panel 130 has a main body portion 131 that supports the drive portion 120, a plurality of fixing portions 132 that are fixed to the sliding door 30, an extension portion 133 that extends toward the relay pulley unit 200, and a bending portion 134 that supports the cable guides 161, 162.

[0035] The driving unit 120 is fixed to the main body 131 using fastening members such as screws, bolts, and rivets. The main body 131 has an insertion hole 135 for passing the output shaft 122 of the driving unit 120. In this respect, it can be said that the main body 131 rotatably supports the drum 110 via the driving unit 120. The fixing portion 132 is fixed to the inner panel 42 via a fastening member. For this reason, it is preferable that the fixing portion 132 is curved or bent so as to fit along the inner panel 42. The bent portion 134 extends from the tip of the extension portion 133 in the plate thickness direction of the extension portion 133. The bent portion 134 has two notches 136.

[0036] The drum cover 140 is, for example, a resin part that is injection molded. The drum cover 140 is fixed to the support panel 130 together with the driving unit 120 by a fastening member. In this way, the drum cover 140 covers the drum 110 and the first cable 61 and the second cable 62 extending from the drum 110. In addition, it is preferable that the drum cover 140 rotatably supports the tip of the output shaft 122.

[0037] The panel cover 150 is, for example, a resin part that is injection molded. The panel cover 150 has a first bottom wall 151, a second bottom wall 152 that is shifted from the first bottom wall 151 in the plate thickness direction of the first bottom wall 151, a first side wall 153 that extends from the outer edge of the first bottom wall 151, and a second side wall 154 that extends from the outer edge of the second bottom wall 152.

[0038] The drive unit 120 is partially accommodated in the space surrounded by the first bottom wall 151 and the first side wall 153. The first cable 61, the second cable 62, the support panel 130, the drum cover 140, and the cable guides 161, 162 are partially accommodated in the space surrounded by the second bottom wall 152 and the second side wall 154. Most of the panel cover 150 is positioned in the internal space 43 of the sliding door 30 when the door drive device 50 is mounted on the sliding door 30. In other words, the panel cover 150 covers the accommodation hole 44 of the inner panel 42 when the door drive device 50 is mounted on the sliding door 30.

[0039] As shown in FIG. 6, the second bottom wall 152 has a first protruding portion 155 having a cylindrical shape and a second protruding portion 156 having a rectangular prism shape. Although only one second protruding portion 156 is illustrated in FIG. 6, the second bottom wall 152 has two second protruding portions 156. The first protruding portion 155 and the two second protruding portions 156 extend from the second bottom wall 152 in the same direction as the second side wall 154. In a front view of the second bottom wall 152, the first protruding portion 155 is located between the two second protruding portions 156. The first side wall 153 has a plurality of locking claws 157 extending from the tip surface of the first side wall 153. The plurality of locking claws 157 are locked to the support panel 130 while being elastically deformed. In this way, the panel cover 150 is attached to the support panel 130 by a so-called snap fit. When the panel cover 150 is attached to the support panel 130, the first protrusion 155 contacts the extension portion 133 of the support panel 130, and the two second protrusions 156 contact the cable guides 161, 162, respectively. The second side wall 154 has two insertion holes 158 penetrating in the plate thickness direction.

[0040] The first cable guide 161 and the second cable guide 162 are cylindrical. The inner diameter of the cable guides 161, 162 is preferably large enough to allow the first cable 61 and the second cable 62 to pass through smoothly. The cable guides 161, 162 are molded from a material having a relatively high rigidity, such as a metal material or a resin material.

[0041] The cable guides 161, 162 have three engagement grooves 163, 164, 165 extending in the circumferential direction. The three engagement grooves 163, 164, 165 are positioned at intervals in the axial direction of the cable guides 161, 162. The first ends of the cable guides 161, 162 fit into the notches 136 of the bent portion 134 of the support panel 130. At this time, the engagement grooves 163 of the cable guides 161, 162 engage with the bent portion 134 of the support panel 130. As a result, the cable guides 161, 162 are immovable in the plate thickness direction of the bent portion 134 of the support panel 130.

[0042] When the panel cover 150 is attached to the support panel 130, the cable guides 161, 162 pass through two insertion holes 158 of the panel cover 150. Furthermore, in this state, the opening of the notch 136 of the bent portion 134 of the support panel 130 is blocked by the second protruding portion 156 of the panel cover 150. For this reason, the first ends of the cable guides 161, 162 cannot move in a direction intersecting with the plate thickness direction of the bent portion 134 of the support panel 130. In other words, the first ends of the cable guides 161, 162 will not fall off from the bent portion 134 of the support panel 130.

[0043] 5, the cap 170 is dome-shaped. The cable guides 161, 162 are inserted into the cap 170. At this time, the cap 170 is engaged with the engagement grooves 164 of the cable guides 161, 162. When liquid such as rain enters the internal space 43 of the sliding door 30, the cap 170 prevents the liquid from passing through the insertion hole 158 and reaching the inside of the inner panel 42.

[0044] 6 and 7, the seal member 180 is disposed along the edges of the first side wall 153 and the second side wall 154 of the panel cover 150. When the drum unit 100 is fixed to the inner panel 42, the seal member 180 is crushed between the inner panel 42 and the panel cover 150. In this way, when liquid such as rain enters the internal space 43 of the sliding door 30, the seal member 180 prevents the liquid from passing through the receiving hole 44 and reaching the inside of the inner panel 42.

[0045] The relay pulley unit 200 will be described. 8 and 9, the relay pulley unit 200 includes a first relay pulley 210 that changes the direction of the first cable 61, and a second relay pulley 220 that changes the direction of the second cable 62. The relay pulley unit 200 includes a first support shaft 231 and a second support shaft 232 that support the first relay pulley 210 and the second relay pulley 220, respectively, and a base plate 240 that supports the first support shaft 231 and the second support shaft 232. The relay pulley unit 200 includes a case 250 that covers the first relay pulley 210 and the second relay pulley 220 together with the base plate 240, and a seal member 260 that seals the exposure hole 45 of the inner panel 42.

[0046] The first relay pulley 210 and the second relay pulley 220 are disk-shaped. The first relay pulley 210 has a circumferential groove 211 extending in the circumferential direction, and the second relay pulley 220 has a circumferential groove 221 extending in the circumferential direction. The first cable 61 is housed in the circumferential groove 211 of the first relay pulley 210, and the second cable 62 is housed in the circumferential groove 221 of the second relay pulley 220. The first relay pulley 210 is rotatably supported by a first support shaft 231, and the second relay pulley 220 is rotatably supported by a second support shaft 232.

[0047] The base plate 240 has a plate shape. The base plate 240 is formed, for example, by pressing a metal plate. The base plate 240 has a first support portion 241 facing the first intermediate pulley 210, a second support portion 242 facing the second intermediate pulley 220, a first extension portion 243 extending from the first support portion 241, and a second extension portion 244 extending from the second support portion 242. The base plate 240 has a first bent portion 245 bending and extending from the first extension portion 243, a second bent portion 246 bending and extending from the second extension portion 244, and a plurality of fixing portions 247 fixed to the inner panel 42 of the sliding door 30.

[0048] The first support portion 241 is inclined with respect to the second support portion 242. A first end of the first support shaft 231 is fixed to the first support portion 241, and a first end of the second support shaft 232 is fixed to the second support portion 242. Therefore, the axis of the first support shaft 231 is inclined with respect to the axis of the second support shaft 232. In this respect, it can be said that the first support portion 241 supports the first relay pulley 210 via the first support shaft 231, and the second support portion 242 supports the second relay pulley 220 via the second support shaft 232. The first extension portion 243 has a boundary portion with the first support portion 241 that bulges in the plate thickness direction. The first extension portion 243 has a guide surface 248 that guides the first cable 61 to the first relay pulley 210.

[0049] The first bent portion 245 and the second bent portion 246 have a notch 249. The second end of the first cable guide 161 is received in the notch 249 of the first bent portion 245. At this time, the first bent portion 245 engages with the engagement groove 165 of the first cable guide 161. As a result, the displacement of the first cable guide 161 in the plate thickness direction of the first bent portion 245 is limited. Similarly, the second end of the second cable guide 162 is received in the notch 249 of the second bent portion 246. At this time, the second bent portion 246 engages with the engagement groove 165 of the second cable guide 162. As a result, the displacement of the second cable guide 162 in the plate thickness direction of the second bent portion 246 is limited. The multiple fixing portions 247 are fixed to the inner panel 42 via a fastening member. For this reason, it is preferable that the fixing portions 247 are curved so as to follow the shape of the inner panel 42.

[0050] The case 250 has a main wall 251 that covers the first intermediate pulley 210 and the second intermediate pulley 220, and a first surrounding wall 252 and a second surrounding wall 253 that respectively cover the cable guides 161, 162. The case 250 has a guide portion 254 that guides the first cable 61 and the second cable 62 toward the guide pulley unit 300, a pressing portion 255 that presses the seal member 260, and a gripping portion 256 that grips the guide pulley unit 300.

[0051] The main wall 251 supports a second end of the first support shaft 231 and a second end of the second support shaft 232. In this respect, both ends of the first support shaft 231 are supported by the base plate 240 and the case 250, and both ends of the second support shaft 232 are supported by the base plate 240 and the case 250. The main wall 251 covers the first relay pulley 210 and the second relay pulley 220 together with the first support portion 241 and the second support portion 242 of the base plate 240.

[0052] The first surrounding wall 252 and the second surrounding wall 253 extend from the main wall 251. The cross-sectional shape perpendicular to the extending direction of the first surrounding wall 252 and the second surrounding wall 253 is substantially C-shaped. The first surrounding wall 252 covers the first extension portion 243 and the first bent portion 245 of the base plate 240 from three sides, and the second surrounding wall 253 covers the second extension portion 244 and the second bent portion 246 of the base plate 240 from three sides. At this time, the first surrounding wall 252 covers the opening of the notch 249 of the first bent portion 245 with which the first cable guide 161 is engaged, and the second surrounding wall 253 covers the opening of the notch 249 of the second bent portion 246 with which the second cable guide 162 is engaged. In this manner, the first surrounding wall 252 and the second surrounding wall 253 prevent the cable guides 161, 162 from falling off the base plate 240.

[0053] The pressing portion 255 has a shape corresponding to the surrounding area of ​​the exposure hole 45 of the inner panel 42 of the sliding door 30. The pressing portion 255 preferably has a claw shape or the like for holding the seal member 260. The first cable 61 and the second cable 62 passing through the guide portion 254 toward the guide pulley unit 300 are inserted into the pressing portion 255. The gripping portion 256 extends from the pressing portion 255. The tip of the gripping portion 256 is bifurcated into two. In a plan view, the gripping portion 256 is curved in an arc shape.

[0054] The seal member 260 has a plate shape similar to that of the pressing portion 255 of the case 250. The seal member 260 is molded from an elastomer such as rubber or resin. The grip portion 256 of the case 250, the first cable 61, and the second cable 62 are inserted into the seal member 260. When the drive unit 120 is mounted on the sliding door 30, the seal member 260 is crushed between the pressing portion 255 of the case 250 and the surrounding area of ​​the exposure hole 45 of the inner panel 42. In this way, when liquid such as rain enters the internal space 43 of the sliding door 30, the seal member 260 prevents the liquid from reaching the inside of the inner panel 42 through the exposure hole 45.

[0055] The guide pulley unit 300 will now be described. 10 and 11, the guide pulley unit 300 has a first guide pulley 310 around which the first cable 61 is wound, and a second guide pulley 320 around which the second cable 62 is wound. The guide pulley unit 300 has a first support shaft 331 and a second support shaft 332 that support the first guide pulley 310 and the second guide pulley 320, respectively, and a housing 340 that supports the first support shaft 331 and the second support shaft 332. The guide pulley unit 300 includes a cover 350 that covers the first guide pulley 310 and the second guide pulley 320 together with the housing 340, a path forming member 360 that is disposed between the first guide pulley 310 and the second guide pulley 320, and two collars 370 that fit into the path forming member 360.

[0056] The first guide pulley 310 and the second guide pulley 320 are disk-shaped. The first guide pulley 310 has two circumferential grooves 311 and 312 aligned in the axial direction, and the second guide pulley 320 has two circumferential grooves 321 and 322 aligned in the axial direction. In the first guide pulley 310, the first cable 61 is housed in the circumferential groove 311, and the second cable 62 is housed in the circumferential groove 312. Similarly, in the second guide pulley 320, the first cable 61 is housed in the circumferential groove 321, and the second cable 62 is housed in the circumferential groove 322. The first guide pulley 310 is rotatably supported by a first support shaft 331, and the second guide pulley 320 is rotatably supported by a second support shaft 332. The second guide pulley 320 guides the first cable 61 toward the front end of the center rail 23, and guides the second cable 62 toward the rear end of the center rail 23. In other words, the second guide pulley 320 guides the first cable 61 and the second cable 62 toward both end portions of the center rail 23.

[0057] Housing 340 has a plate shape. Housing 340 is formed, for example, by pressing a metal plate. Housing 340 has an oval bottom wall 341 and a side wall 342 extending from a part of the outer edge of bottom wall 341 in a direction intersecting bottom wall 341.

[0058] The bottom wall 341 has two fixing holes 343 penetrating in the plate thickness direction. The two fixing holes 343 are holes through which fastening members pass to fasten the guide pulley unit 300 to the movable hinge 36 of the center hinge unit 33. In the bottom wall 341, the peripheral portions of the two fixing holes 343 are shifted in the plate thickness direction from the other portions. A first end of the first support shaft 331 and a first end of the second support shaft 332 are fixed to the bottom wall 341. In this respect, it can be said that the bottom wall 341 rotatably supports the first guide pulley 310 and the second guide pulley 320 via the first support shaft 331 and the second support shaft 332.

[0059] The cover 350 is, for example, a resin part that is injection molded. The cover 350 has an oval-shaped upper wall 351, an annular wall 352 extending from the upper wall 351, and a plurality of engagement walls 353, a first guide wall 354, and a second guide wall 355 extending from the upper wall 351 in the opposite direction to the annular wall 352.

[0060] The upper wall 351 has substantially the same shape as the bottom wall 341 of the housing 340 in a plan view. The upper wall 351 covers the first guide pulley 310 and the second guide pulley 320 together with the bottom wall 341 of the housing 340. The upper wall 351 supports the second end of the first support shaft 331 and the second end of the second support shaft 332. In this respect, both ends of the first support shaft 331 are supported by the housing 340 and the cover 350, and both ends of the second support shaft 332 are supported by the housing 340 and the cover 350. The upper wall 351 has two engagement holes 356a, 356b and two insertion holes 357 penetrating in the plate thickness direction. The two engagement holes 356a, 356b are holes for positioning the path forming member 360 relative to the cover 350. The engagement hole 356a is a round hole, and the engagement hole 356b is an elongated hole. The longitudinal direction of the engagement hole 356b is a direction connecting the centers of the two engagement holes 356a, 356b. The two insertion holes 357 are holes for passing the collar 370 through. Therefore, the inner diameters of the two insertion holes 357 are larger than the outer diameter of the collar 370.

[0061] The annular wall 352 is annular. The rotation axis of the annular wall 352 coincides with the rotation axis of the first support shaft 331. The tip of the annular wall 352 is flange-shaped. The annular wall 352 is held by the holding portion 256 of the relay pulley unit 200. The guide pulley unit 300 and the relay pulley unit 200 are integrated by holding the annular wall 352 by the holding portion 256. However, even when the guide pulley unit 300 is held by the holding portion 256, it is possible for the guide pulley unit 300 to rotate relatively to the relay pulley unit 200 around the rotation axis of the first support shaft 331.

[0062] The engagement walls 353 engage with the side wall 342 of the housing 340. The first guide wall 354 and the second guide wall 355 extend along the outer shape of the second guide pulley 320 in a plan view. The first guide wall 354 and the second guide wall 355 form a space for accommodating the second guide pulley 320. In detail, the first guide wall 354 forms a path through which the first cable 61 passes together with the circumferential groove 321 of the second guide pulley 320, and the second guide wall 355 forms a path through which the second cable 62 passes together with the circumferential groove 322 of the second guide pulley 320. In the following description, the surfaces of the first guide wall 354 and the second guide wall 355 facing the second guide pulley 320 are also referred to as inner surfaces.

[0063] As shown in FIG. 11, the inner surface of the first guide wall 354 includes a first guide surface 354a that guides the first cable 61 traveling from the first guide pulley 310 to the second guide pulley 320. The inner surface of the first guide wall 354, except for the first guide surface 354a, extends along the outer circumferential surface of the second guide pulley 320. In contrast, the first guide surface 354a is inclined with respect to the outer circumferential surface of the second guide pulley 320. Similarly, the inner surface of the second guide wall 355 includes a second guide surface 355a that guides the second cable 62 traveling from the first guide pulley 310 to the second guide pulley 320. The inner surface of the second guide wall 355, except for the first guide surface 354a, extends along the outer circumferential surface of the second guide pulley 320. In contrast, the second guide surface 355a is inclined with respect to the outer circumferential surface of the second guide pulley 320.

[0064] 12, in a plan view of the guide pulley unit 300, the engagement hole 356a of the cover 350 is positioned at a position offset from a line segment connecting the rotation axis A1 of the first guide pulley 310 and the rotation axis A2 of the second guide pulley 320. On the other hand, the engagement hole 356b of the cover is positioned at a position overlapping with a line segment connecting the rotation axis A1 of the first guide pulley 310 and the rotation axis A2 of the second guide pulley 320. In addition, it is preferable that the angle formed between the line segment connecting the centers of the two engagement holes 356a, 356b of the cover 350 and the line segment connecting the rotation axis A1 of the first guide pulley 310 and the rotation axis A2 of the second guide pulley 320 is small.

[0065] The path forming member 360 is, for example, a resin part that is injection molded. Since the path forming member 360 has a thickness, it is preferable that a thickness recess is appropriately provided. The path forming member 360 has a first guide groove 361 that constitutes the moving path of the first cable 61, a second guide groove 362 that constitutes the moving path of the second cable 62, and two holding holes 363 that respectively hold two collars 370. The path forming member 360 has two engagement shafts 364a, 364b that respectively engage with the two engagement holes 356a, 356b of the cover 350, and four claw portions 365, 366 that scrape off foreign matter adhering to the first guide pulley 310 and the second guide pulley 320.

[0066] The first guide groove 361 is provided in a portion facing the housing 340, and the second guide groove 362 is provided in a portion facing the cover 350. When the first guide groove 361 is projected toward the second guide groove 362, the first guide groove 361 and the second guide groove 362 intersect. The two holding holes 363 penetrate the path forming member 360. The two holding holes 363 are positioned offset from the first guide groove 361 and the second guide groove 362 so as not to interfere with both the first guide groove 361 and the second guide groove 362. The two holding holes 363 are positioned with an interval in the extending direction of the second guide groove 362. The inner diameters of the two holding holes 363 are smaller than the inner diameters of the two insertion holes 357 of the cover 350.

[0067] The two engagement shafts 364a, 364b are cylindrical. The axes of the two engagement shafts 364a, 364b extend in the same direction as the axes of the two holding holes 363. That is, the two engagement shafts 364a, 364b extend toward the cover 350. The two engagement shafts 364a, 364b are inserted into the two engagement holes 356a, 356b of the cover 350, respectively, to determine the relative positional relationship between the path forming member 360 and the cover 350. Note that since one of the engagement holes 356b is an elongated hole, even if a manufacturing error occurs in the axial distance between the two engagement shafts 364a, 364b, a situation in which the two engagement shafts 364a, 364b cannot be inserted into the two engagement holes 356a, 356b of the cover 350, respectively, is avoided.

[0068] The four claw portions 365, 366 extend in a direction perpendicular to the axes of the two engagement shafts 364a, 364b. The two claw portions 365 extend toward the two circumferential grooves 311, 312 of the first guide pulley 310, respectively, and the two claw portions 366 extend toward the two circumferential grooves 321, 322 of the second guide pulley 320, respectively. The claw portions 365, 366 are configured to scrape off foreign matter adhering to the circumferential grooves when the guide pulley rotates.

[0069] The path forming member 360 is disposed between the first guide pulley 310 and the second guide pulley 320, and between the housing 340 and the cover 350. Thus, the first guide groove 361 of the path forming member 360 is connected to the circumferential groove 311 of the first guide pulley 310 and the circumferential groove 321 of the second guide pulley 320. Similarly, the second guide groove 362 of the path forming member 360 is connected to the circumferential groove 312 of the first guide pulley 310 and the circumferential groove 322 of the second guide pulley 320.

[0070] The collar 370 has a cylindrical shape. The collar 370 is molded from a resin material or a metal material. In this embodiment, the outer diameter of the collar 370 is larger than the inner diameter of the retaining hole 363 of the path forming member 360. That is, the two collars 370 are press-fitted into the two retaining holes 363 of the path forming member 360. Note that, in another embodiment, the collar 370 may be insert-molded into the path forming member 360. In a state where the guide pulley unit 300 is assembled, one end surface of the collar 370 in the axial direction contacts the bottom wall 341 of the housing 340, and the other end surface of the collar 370 in the axial direction slightly protrudes from the upper wall 351 of the cover 350.

[0071] 4, the guide pulley unit 300 is fixed to the movable hinge 36 of the center hinge unit 33 from below. More specifically, the guide pulley unit 300 is fixed to the movable hinge 36 with the cover 350 facing upward by a fastening member passing through a collar 370. At this time, an end face of the collar 370 in the axial direction contacts the movable hinge 36, so that a small gap is generated between the cover 350 and the movable hinge 36.

[0072] The operation of this embodiment will be described. In detail, a manufacturing method of the door driving device 50 will be described. The manufacturing method of the door driving device 50 includes a first assembly step, a wiring step, a winding step, and a second assembly step.

[0073] The first assembly process is a process of assembling the drum unit 100, the relay pulley unit 200, and the guide pulley unit 300, except for the first cable 61, the second cable 62, and the drum cover 140 of the drum unit 100. The wiring process is a process of passing the first cable 61 and the second cable 62 through the drum unit 100, the relay pulley unit 200, and the guide pulley unit 300 in this order. The winding process is a process of winding up one of the first cable 61 and the second cable 62, with the second end of the first cable 61 and the second end of the second cable 62 fixed to the drum 110 of the drum unit 100. The second assembly process is a process of fixing the drum cover 140 to the support panel 130 in the drum unit 100.

[0074] The wiring process will be described in detail below. Note that since the wiring of the first cable 61 and the wiring of the second cable 62 are substantially similar, only the wiring of the first cable 61 will be described. In the drum unit 100, the tip of the first cable 61 is inserted into the first cable guide 161. Then, the tip of the first cable 61 passes through the first cable guide 161. In this manner, the tip of the first cable 61 reaches the relay pulley unit 200.

[0075] As shown in FIG. 13, in the relay pulley unit 200, the first cable 61 advances between the base plate 240 and the case 250 toward the first relay pulley 210. Here, since the base plate 240 has a guide surface 248, the tip of the first cable 61 is not easily guided between the first relay pulley 210 and the base plate 240. In other words, the tip of the first cable 61 is easily guided toward the circumferential groove 211 of the first relay pulley 210. In this way, the first cable 61 is wound around the first relay pulley 210. The first cable 61 wound around the first relay pulley 210 passes through the guide portion 254 and the pressing portion 255 of the case 250 and the seal member 260, and then heads toward the guide pulley unit 300. In this way, the tip of the first cable 61 reaches the guide pulley unit 300.

[0076] 14, in the guide pulley unit 300, the first cable 61 travels between the first guide pulley 310 and the engagement wall 353 of the cover 350. More specifically, the first cable 61 travels in the circumferential groove 311 of the first guide pulley 310. That is, the first cable 61 is wound around the first guide pulley 310. The first cable 61 wound around the first guide pulley 310 travels in the first guide groove 361 of the path forming member 360. Here, since the first guide groove 361 extends in the circumferential direction of the first guide pulley 310, the first cable 61 is smoothly guided to the first guide groove 361.

[0077] Thereafter, the first cable 61 advances between the second guide pulley 320 and the first guide wall 354 of the cover 350. Here, since the first guide wall 354 has a first guide surface 354a, the tip of the first cable 61 is unlikely to be guided into the gap between the path forming member 360 and the first guide wall 354 or to strike against the end of the first guide wall 354. In other words, the tip of the first cable 61 is likely to be guided into the circumferential groove 321 of the second guide pulley 320. In this manner, the first cable 61 is wound around the second relay pulley 220. Note that the housing 340 of the guide pulley unit 300 shown in FIG. 14 is omitted from illustration.

[0078] The effects of this embodiment will be described. (1) The path forming member 360 having the first guide groove 361 and the second guide groove 362 is configured separately from the housing 340 and the cover 350. This simplifies the configuration of the housing 340 and the cover 350. Furthermore, in the path forming member 360, the first guide groove 361 is provided in a portion facing the housing 340, and the second guide groove 362 is provided in a portion facing the cover 350. This makes it easier to form the first guide groove 361 and the second guide groove 362, for example, compared to a comparative example in which the first guide groove and the second guide groove are provided in a portion of the cover facing the housing.

[0079] (2) The cover 350 has a first guide surface 354a that guides the first cable 61 moving through the first guide groove 361 toward the first guide pulley 310, and a second guide surface 355a that guides the second cable 62 moving through the second guide groove 362 toward the first guide pulley 310. Therefore, the first cable 61 moving through the first guide groove 361 is easily guided to the first guide pulley 310 by the first guide surface 354a. Similarly, the second cable 62 moving through the second guide groove 362 is easily guided to the second guide pulley 320 by the second guide surface 355a. Therefore, the guide pulley unit 300 makes it easy to arrange the first cable 61 and the second cable 62. The guide surface 248 of the base plate 240 of the relay pulley unit 200 also functions in the same manner as the first guide surface 354a and the second guide surface 355a of the cover 350.

[0080] (3) The path forming member 360 has two engagement shafts 364a and 364b, and the cover 350 has two engagement holes 356a and 356b into which the two engagement shafts 364a and 364b are inserted, respectively. Therefore, the guide pulley unit 300 can position the path forming member 360 with respect to the cover 350 by inserting the engagement shafts 364a and 364b of the path forming member 360 into the engagement holes 356a and 356b of the cover 350, respectively. In addition, of the two engagement holes 356a and 356b, one engagement hole 356a is a round hole, and the other engagement hole 356b is an elongated hole. Therefore, even if a manufacturing error is included in the axis-to-axis distance of the two engagement shafts 364a and 364b, a situation in which the two engagement shafts 364a and 364b cannot be inserted into the two engagement holes 356a and 356b, respectively, is avoided.

[0081] (4) In a plan view of the guide pulley unit 300, the engagement hole 356b is provided at a position overlapping a line segment connecting the rotation axis A1 of the first guide pulley 310 and the rotation axis A2 of the second guide pulley 320. Therefore, in a state in which the path forming member 360 is positioned relative to the cover 350, the relative positional relationship between the first guide pulley 310 and the second guide pulley 320 and the first guide groove 361 and the second guide groove 362 is less likely to shift. Therefore, when the first cable 61 and the second cable 62 are arranged, the guide pulley unit 300 makes it easier to pass the first cable 61 and the second cable 62 through.

[0082] (5) For example, in the case of the comparative example in which the cover has a retaining hole for retaining collar 370, it is necessary to provide an insertion hole for passing collar 370 in the path forming member. In contrast, guide pulley unit 300 has retaining hole 363 for retaining collar 370 in path forming member 360. Here, if the outer diameter of collar 370 is constant, the inner diameter of retaining hole 363 in path forming member 360 is smaller than the inner diameter of the insertion hole in the path forming member of the comparative example. Therefore, guide pulley unit 300 can increase the degree of freedom in arranging first guide groove 361 and second guide groove 362 by the amount that the inner diameter of the hole provided in path forming member 360 can be reduced.

[0083] 15, since the second guide groove 362 can be brought closer to the collar 370, the second guide pulley 320 can be disposed closer to the center rail 23. This makes it easier to maintain the first cable 61 and the second cable 62 extending along the center rail 23 when the sliding door 30 is opened or closed. As a result, the power of the drive unit 120 is more easily transmitted to the vehicle body 20 efficiently via the first cable 61 and the second cable 62.

[0084] (6) When the door drive device 50 is mounted on the sliding door 30, the support panel 130 of the drum unit 100 is fastened to the inner panel 42 of the sliding door 30 by a fastening member. As a result, the panel cover 150 of the drum unit 100 is pressed against the inner panel 42, and the seal member 180 is crushed. In this way, the gap between the panel cover 150 and the inner panel 42 is closed. At this time, as shown in FIG. 16, the panel cover 150 presses the first protrusion 155 of the inner panel 42. Therefore, the upper part of the panel cover 150 can be pressed against the inner panel 42, and a gap is less likely to occur between the inner panel 42 and the seal member 180.

[0085] (7) The door drive device 50 can protect the first cable 61 and the second cable 62 with the first cable guide 161 and the second cable guide 162 that engage with the support panel 130 and the base plate 240. Moreover, the first cable guide 161 and the second cable guide 162 are simple cylindrical members. Therefore, the door drive device 50 can protect the first cable 61 and the second cable 62 extending between the drum unit 100 and the relay pulley unit 200 with a simple configuration.

[0086] This embodiment can be modified as follows: This embodiment and the following modifications can be combined with each other to the extent that there is no technical contradiction. In the guide pulley unit 300 , the collar 370 may be fitted to the cover 350 .

[0087] In a plan view of the guide pulley unit 300, the engagement hole 356b of the cover 350 does not have to be positioned on a line segment connecting the rotation axis A1 of the first guide pulley 310 and the rotation axis A2 of the second guide pulley 320. In other words, the engagement holes 356a, 356b of the cover 350 may be positioned offset from the line segment.

[0088] In the guide pulley unit 300, the path forming member 360 may have a shaft and a hole for positioning with respect to the housing 340. In this case, the path forming member 360 does not need to be positioned with respect to the cover 350.

[0089] The guide pulley unit 300 may include only one of the first guide surface 354a and the second guide surface 355a. The guide pulley unit 300 may include two first guide pulleys 310 that rotate independently about the same axis. In this case, it is preferable that the first cable 61 and the second cable 62 are wound around the two first guide pulleys 310 in the same manner. In this case, the first cable 61 and the second cable 62 are not routed so as to cross between the first guide pulley 310 and the second guide pulley 320 as in the above embodiment.

[0090] In the wiring process, the first cable 61 and the second cable 62 may be wired in the order of the guide pulley unit 300, the relay pulley unit 200, and the drum unit 100. In this case, it is preferable to change the positions of the structures for guiding the first cable 61 and the second cable 62.

[0091] The holes and shape provided in the panel cover 150 of the drum unit 100 may be used for alignment of the drum unit 100 with respect to the inner panel 42 when the door driving device 50 is mounted on the sliding door 30 . [Explanation of symbols]

[0092] 10. Vehicle 20…Body 21…Door opening 22...Upper rail (example of rail) 23...Center rail (example of rail) 24...Lower rail (an example of a rail) 30…Sliding door 40…Door body 50…Door drive unit 61…1st cable 62…Second cable 100...Drum unit 110…Drum 120...Drive unit 130…Support panel 140…Drum cover 150…Panel cover 161…1st cable guide 162…Second cable guide 200...Relay pulley unit 210…First relay pulley 220…Second relay pulley 231...1st spindle 232…Second spindle 240…Base plate 250…case 260...Sealing material 300...Guide pulley unit 310…First guide pulley 320…Second guide pulley 331...1st spindle 332…Second spindle 340…Housing 350…Cover 354…First guide wall 354a…First guide surface 355…Second guide wall 355a…Second guide surface 356a, 356b…Engagement hole 357...Through hole 360...Path forming member 361…First guide groove 362…Second guide groove 363…Retaining hole 364a, 364b…Engagement shaft 370…Color

Claims

1. A guide pulley unit that is applied to a vehicle having a car body with a rail and a door that moves along the rail, and that guides a first cable that is wound when a drum rotates in one direction and a second cable that is wound when the drum rotates in the other direction toward both ends of the rail, a first guide pulley around which the first cable and the second cable extending from the drum are wound; a second guide pulley around which the first cable and the second cable extending from the first guide pulley are wound; a housing that rotatably supports the first guide pulley and the second guide pulley; a cover that covers the housing together with the first guide pulley and the second guide pulley; a path forming member disposed between the first guide pulley and the second guide pulley and between the housing and the cover, The path forming member has a first guide groove provided in a portion facing the housing as a movement path of the first cable, and a second guide groove provided in a portion facing the cover as a movement path of the second cable. Guide pulley unit.

2. The cover has at least one of a first guide surface that guides the first cable traveling in the first guide groove toward the first guide pulley and a second guide surface that guides the second cable traveling in the second guide groove toward the first guide pulley.

2. The guide pulley unit according to claim 1.

3. The path forming member has a plurality of engagement shafts extending toward the cover, The cover has a plurality of engagement holes into which the plurality of engagement shafts are respectively inserted. The guide pulley unit according to claim 1 or 2.

4. When viewed from a plane in a direction in which rotation axes of the first guide pulley and the second guide pulley extend, In the cover, at least one of the plurality of engagement holes is positioned so as to overlap a line segment connecting a rotation axis of the first guide pulley and a rotation axis of the second guide pulley. The guide pulley unit according to claim 3.

5. A collar through which a fastening member is inserted, The path forming member has a holding hole for holding the collar at a position offset from the first guide groove and the second guide groove. The guide pulley unit according to any one of claims 1 to 4.

6. A guide pulley unit according to any one of claims 1 to 5, the first cable and the second cable; a drum unit including the drum, a support panel that rotatably supports the drum, and a drive unit that drives the drum; a relay pulley unit including a first relay pulley that guides the first cable extending from the drum toward the first guide pulley, a second relay pulley that guides the second cable extending from the drum toward the first guide pulley, and a base plate that rotatably supports the first relay pulley and the second relay pulley. Door drive.

7. the drum unit includes a first cable guide that protects the first cable extending toward the first relay pulley, and a second cable guide that protects the second cable extending toward the second relay pulley, A first end of the first cable guide and a first end of the second cable guide engage the support panel, and a second end of the first cable guide and a second end of the second cable guide engage the base plate.

7. The door drive device according to claim 6.

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