JP2008256074A - Outer casing for cable, its manufacturing method, and drive device of opening and closing body for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce a manufacturing cost and improve an yield by simplifying a structure of a liner member. <P>SOLUTION: A spiral grease storing groove 40a is formed on the inner peripheral face of the liner member 40 along an inner peripheral surface shape of a rectangular wire member 41. When the rectangular wire member 41 is wound around the outer peripheral face of the liner member 40, the grease storing groove 40a can be formed on the inner peripheral face of the liner member 40 by deforming the liner member 40, and an outer casing 32 having the grease storing groove 40a can be formed by using the liner member 40 comprising a simple-shaped hollow tube. Thereby, the manufacturing process of the outer casing 32 is simplified so that the manufacturing cost can be reduced and the yield can be improved. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an outer casing for a cable in which a cable is movably provided and a plurality of members are laminated.

  2. Description of the Related Art Conventionally, an electric slide door or the like mounted on a vehicle is known in which an electric motor as a drive source and a slide door as an opening / closing body are connected by a cable (see, for example, Patent Document 1). This electric slide door transmits a driving force of the electric motor to the slide door by winding the cable by driving of the electric motor, thereby driving the slide door to open and close. The cable provided between the electric motor of such an electric slide door and the slide door is inserted into the inside of the hollow outer casing and moves while sliding on the inner surface of the outer casing. One end side of the outer casing is connected to a housing on the electric motor side, and the other end side is connected to a pulley side housing fixed to a vehicle body near the sliding door.

  As an outer casing in which a cable is movably provided, for example, there is one described in Patent Document 2, and the outer casing described in Patent Document 2 is formed by laminating a plurality of members. Yes.

This outer casing includes a spiral liner tube (liner member) provided with a groove that functions as a grease reservoir on the sliding surface with the cable, and a belt-like cloth wound spirally so as to cover the outer peripheral surface of the liner tube ( A three-layer structure composed of an intermediate layer) and an outer layer (covering member) made of synthetic resin provided to cover the outer peripheral surface of the belt-like cloth is employed. The grease can be held on the surface of the cable for a long time by the grease collecting function of the groove provided in the liner tube.
JP 2004-263429 A (FIG. 3) JP 2003-232330 A (FIGS. 7 and 12)

  However, according to the outer casing described in Patent Document 2 described above, as a material for the liner tube, a square member having a trapezoidal or parallelogram cross section is prepared, and a groove extending in the longitudinal direction of the square member on one side surface of these square members To form. Then, in the manufacture of the outer casing, particularly when a square member having a trapezoidal cross section is used, the core member to be removed later is arranged so that the upper surface and the lower surface of the square member are alternately arranged in the axial direction of the outer casing. It is made to wrap around spirally.

  Therefore, when manufacturing the outer casing, it is necessary to prepare a specially shaped material with grooves formed in advance, or to form a spiral liner tube with the front and back of a pair of materials reversed. The manufacturing process becomes complicated, such as the need to do so, and as a result, the manufacturing cost may increase and the yield may decrease.

  An object of the present invention is to provide an outer casing for a cable, a manufacturing method thereof, and a driving device for a vehicle opening / closing body that can simplify the structure of a liner member to reduce the manufacturing cost and improve the yield.

  An outer casing for a cable according to the present invention is an outer casing for a cable in which a cable is movably provided and a plurality of members are stacked, and a liner member that forms an inner layer that is in sliding contact with the cable; A rectangular wire member spirally wound around the outer peripheral surface of the liner member and forming an intermediate layer, and a covering member provided to cover the outer peripheral surface of the flat wire member and forming an outer layer, A spiral grease storage groove is formed on the inner peripheral surface of the liner member along the inner peripheral surface shape of the flat wire member.

  In the outer casing for a cable of the present invention, the grease storage groove is formed by being wound around the liner member so that adjacent sides of the rectangular cross section of the flat wire member are displaced in the radial direction. Features.

  The method for manufacturing an outer casing for a cable according to the present invention is a method for manufacturing an outer casing for a cable in which a cable is movably provided and a plurality of members are laminated, and is an inner layer that is in sliding contact with the cable. A first step of preparing a liner member for forming the intermediate layer, and a rectangular wire member for forming the intermediate layer is spirally wound with a predetermined winding force to deform the liner member, and the inner peripheral surface of the liner member And a third step of providing a covering member for forming the outer layer so as to cover the outer peripheral surface of the flat wire member.

  A drive device for a vehicle opening / closing body according to the present invention is a drive device for a vehicle opening / closing body that opens and closes a vehicle opening / closing body by a drive source, wherein one end side is connected to the drive source so as to be rewound, and the other end side is connected to the drive source. A cable connected to an opening / closing body, provided between the drive source and the opening / closing body, provided between a pulley for changing a moving direction of the cable, and between the pulley and the drive source; A cable outer casing provided with a cable movably, the cable outer casing is spirally wound around a liner member that forms an inner layer that is in sliding contact with the cable, and an outer peripheral surface of the liner member; A flat wire member that forms an intermediate layer; and a covering member that is provided so as to cover the outer peripheral surface of the flat wire member and that forms an outer layer. Wherein the grease retention groove in the inner peripheral surface shape along the spiral wood is formed.

  According to the outer casing for a cable of the present invention, since the spiral grease storage groove along the inner peripheral surface shape of the flat wire member is formed on the inner peripheral surface of the liner member, the flat wire member is used as the outer peripheral surface of the liner member. When spirally wound around, the liner member is deformed by the flat wire member, whereby the grease storage groove can be formed on the inner peripheral surface of the liner member. Therefore, since the outer casing for a cable having a grease storage groove can be formed using a liner member made of a simple-shaped hollow tube or the like, the manufacturing process can be simplified, thereby reducing the manufacturing cost and yield. Can be improved.

  According to the outer casing for a cable of the present invention, the grease storage groove is formed by being wound around the liner member so that adjacent sides of the rectangular cross section of the flat wire member are displaced from each other in the radial direction. By winding the wire member spirally with a predetermined winding force so as to be twisted with respect to the liner member, adjacent sides of the rectangular cross section of the flat wire member are formed so as to be displaced from each other in the radial direction. In the inner peripheral surface, a spiral grease storage groove can be formed along a shape in which adjacent sides of the rectangular cross section of the flat wire member are displaced from each other in the radial direction.

  According to the cable outer casing manufacturing method of the present invention, the first step of preparing the liner member, the rectangular wire member is spirally wound with a predetermined winding force, the liner member is deformed, and the inner peripheral surface thereof By using a liner member made of a simple-shaped hollow tube or the like by passing through a second step of forming a helical grease storage groove in the second step and a third step of providing a covering member so as to cover the outer peripheral surface of the flat wire member An outer casing for a cable having a grease storage groove can be formed.

  According to the vehicle opening / closing body drive device of the present invention, the cable outer casing used in the vehicle opening / closing body drive device is a liner member and a rectangular wire member spirally wound around the outer peripheral surface of the liner member. And a covering member provided so as to cover the outer peripheral surface of the flat wire member, and a helical grease storage groove along the inner peripheral surface shape of the flat wire member is formed on the inner peripheral surface of the liner member. Therefore, when the flat wire member is wound around the outer peripheral surface of the liner member, the grease storage groove can be formed on the inner peripheral surface of the liner member by deforming the liner member with the flat wire member. Therefore, since the outer casing for a cable having a grease storage groove can be formed using a liner member made of a simple-shaped hollow tube or the like, the manufacturing process can be simplified, thereby reducing the manufacturing cost and the yield. Can be improved.

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

  FIG. 1 is an explanatory view for explaining a mounting portion of a drive device for a vehicle opening / closing body with respect to a vehicle, FIG. 2 is an enlarged view showing the drive device of FIG. The partial sectional views showing are respectively shown.

  As shown in FIG. 1, the vehicle 10 is provided with a drive device (drive device for a vehicle opening / closing body) 11, and a slide door 13 as an opening / closing body is provided on a side portion of a vehicle body 12 forming the vehicle 10. It is installed. The slide door 13 is guided by a slide rail 14 provided along the side surface of the vehicle body 12, and a fully open position indicated by a solid line in the drawing and a one-dot chain line in the drawing so as to open and close a boarding opening 12a provided in the vehicle body 12. It can be freely opened and closed between the fully closed position indicated by.

  As shown in FIG. 2, a roller assembly 15 that moves along the slide rail 14 is incorporated in the slide rail 14 provided on the vehicle body panel 12 b at the rear part of the entrance 12 a of the vehicle body 12. An arm 16 protruding toward the rear of the vehicle is fixed to the rear end portion. The arm 16 is swingably attached to the roller assembly 15. Therefore, the slide door 13 is guided to the slide rail 14 together with the roller assembly 15.

  A receiving rubber 17 is provided at the vehicle rear end of the slide rail 14, and the movement of the roller assembly 15 is restricted by the receiving rubber 17 at the fully open position of the slide door 13. A curved portion 14a that is curved toward the vehicle interior side of the vehicle body 12 is formed at the vehicle front end of the slide rail 14, and the roller assembly 15 is guided to the curved portion 14a. As shown by the alternate long and short dash line, the vehicle 12 enters the vehicle body 12 and the boarding opening 12a is closed.

  A pair of pulley devices 18 and 19 are mounted near both ends of the slide rail 14 of the vehicle body panel 12b. A slide actuator 20 as a drive source is mounted on the inner side of the vehicle body panel 12b adjacent to the slide rail 14. The slide actuator 20 includes two cables 21 and 22 that extend toward the pulley devices 18 and 19. The ends of the cables 21 and 22 whose movement directions are converted by the pulley devices 18 and 19 It is pulled out of the panel 12b and connected to the roller assembly 15. The outer surfaces of the cables 21 and 22 are coated with a resin layer in order to reduce frictional force due to sliding with inner surfaces of outer casings 32 and 33 described later.

  By operating the slide actuator 20, pulling in the cable 22 and sending out the cable 21, the slide door 13 can be moved toward the fully closed position. By pulling in the cable 21 and sending out the cable 22, the slide door 13 can be moved. Can be moved toward the fully open position.

  As shown in FIG. 3, the slide actuator 20 has an electric motor 23, and the electric motor 23 is fixed to a housing 24 that forms the slide actuator 20. A cable drum 25 is rotatably accommodated in the housing 24, and the rotating shaft 26 of the cable drum 25 and the output shaft of the electric motor 23 are connected via a reduction gear train, an electromagnetic clutch, or the like (not shown). . The reduction gear train is constituted by a worm, a worm hole, or the like.

  A spiral cable groove 25 a is formed on the outer peripheral surface of the cable drum 25, and an engagement groove 25 b is formed on each end surface of the cable drum 25. A cylindrical cable end portion 22a fixed to one end of each cable 21 and 22 is attached to the engagement groove 25b, and each cable 21 and 22 is guided to the two cable grooves 25a and is moved to the cable drum 25 a plurality of times. It is wrapped around.

  The cables 21 and 22 wound around the cable drum 25 are extended to the outside via lead-out portions 28 and 29 formed in a substantially V shape at the top of the housing 24, and via the pulley devices 18 and 19. It is guided to the roller assembly 15. Each pulley device 18, 19 includes a pulley housing 30, 31 having two insertion ports 30a, 30b, 31a, 31b. Outer casings 32 and 33, in which the cables 21 and 22 are movably provided, are mounted between the drawer portions 28 and 29 and the insertion ports 30a and 31a. Reference numerals 28a and 29a denote tensioner mechanisms that apply tension to the cables 21 and 22, respectively.

  Here, the drive device 11 includes the pulley devices 18 and 19, the slide actuator 20, the cables 21 and 22, and the outer casings 32 and 33.

  4 is a partial cross-sectional view for explaining the structure of the outer casing, FIG. 5 is a partial cross-sectional view along the axial direction of the outer casing, and FIGS. 6A, 6B, and 6C are steps for manufacturing the outer casing. The manufacturing process diagrams shown are respectively shown. Since each of the outer casings 32 and 33 has the same structure, only the outer casing 32 on one side will be illustrated and the structure will be described in detail below.

  As shown in FIG. 4, the outer casing 32 is formed in a three-layer long cylindrical shape, and the liner member 40, the flat wire member 41, and the covering member 42 that are in sliding contact with the cable 21 are laminated from the cable 21 side. It forms so that it may become a shape.

  As shown in FIG. 5, the liner member 40 that forms the inner layer on the cable 21 side is formed in a thin hollow tube with a synthetic resin such as plastic, and a predetermined amount of pressing force is applied to the outer peripheral side thereof. By applying the load, it can be deformed relatively easily toward the inner diameter direction.

  A rectangular wire member 41 forming an intermediate layer is spirally wound around the outer peripheral surface of the liner member 40. The flat wire member 41 is made of a metal steel wire obtained by rolling a hard steel wire, and has a substantially rectangular square cross section. The thickness of the flat wire member 41 is set to be larger than the thickness of the liner member 40. Thus, the flat wire member 41 is spirally wound around the liner member 40 in a predetermined manner. The liner member 40 can be deformed in the inner diameter direction by winding with force.

  Each short side 41a, 41a of the flat wire member 41 is wound around the liner member 40 as shown in FIG. 5, and the adjacent short sides 41a, 41a are mutually in the radial direction of the outer casing 32 ( A predetermined amount is shifted in the vertical direction in the figure, and thereby, a spiral groove 41 b is formed on the inner peripheral side of the flat wire member 41.

  The inner circumferential surface of the liner member 40 that is in sliding contact with the cable 21 intersects the axial direction of the outer casing 32 so as to follow the inner circumferential surface shape of the flat wire member 41, that is, the shape of the spiral concave groove 41b. A spiral grease storage groove 40a is formed. Lubricating grease G having viscosity is applied and held in the grease storage groove 40a as shown by the shaded portion in the figure.

  Thus, by forming the grease storage groove 40a on the inner peripheral surface of the liner member 40 and holding the lubricating grease G, the lubricating grease G is prevented from flowing out to the outside by the cable 21, and in the direction of the arrow in the figure. Smooth operation of the relatively moving cable 21 can be performed.

  The outer peripheral surface of the flat wire member 41 is covered with a covering member 42 formed of synthetic resin or the like. The covering member 42 is coated so as to follow the shape of the outer peripheral surface of the flat wire member 41, while the outer peripheral surface of the covering member 42 is finished to be a smooth surface without unevenness.

  Next, the manufacturing method of the outer casing 32 comprised as mentioned above is demonstrated in detail using drawing.

  In manufacturing the outer casing 32, first, the liner member 40 which forms the inner layer of the outer casing 32 is prepared (first step).

  Next, as shown by the arrow in FIG. 6A, a rectangular wire member 41 is spirally wound around the liner member 40 using an assembly device (not shown). At this time, the rectangular wire member 41 is spirally wound with a predetermined winding force so as to be twisted with respect to the liner member 40, and adjacent short sides 41a and 41a of the rectangular wire member 41 are in close contact with each other. To do. As a result, the adjacent short sides 41a and 41a of the rectangular cross section of the flat wire member 41 are formed so as to be shifted from each other in the radial direction, and a predetermined winding force is applied to the outer peripheral surface of the liner member 40, so that the liner member 40 has an inner diameter. The spiral grease storage groove 40a is formed on the inner peripheral surface thereof along the shape in which the adjacent short sides 41a, 41a of the rectangular cross section of the flat wire member 41 are displaced from each other in the radial direction ( Second step).

  Here, the tightening margin (winding force) of the flat wire member 41 with respect to the liner member 40 is set as follows. That is, the pressing force at which the liner member 40 starts to deform is set as the lower limit value, and the pressing force before the liner member 40 buckles and breaks is set as the upper limit value. Desirably, the intermediate value between the lower limit value and the upper limit value is set as described above, so that both the formation of the grease storage groove 40a having a sufficient volume and the buckling prevention of the liner member 40 can be reliably achieved. It becomes possible.

  Following the second step, as shown in FIG. 6B, the liner member 40 around which the flat wire member 41 is wound is coated with a synthetic resin material using a molding machine (not shown), thereby covering the member 42. Is formed (third step). Here, the method for forming the covering member 42 is not limited to the above coating, and the covering member 42 may be formed by, for example, extrusion molding or press molding of a synthetic resin material.

  Thereafter, as shown in FIG. 6 (c), when using the outer casing 32 completed after completing the third step, a large amount of lubricating grease G (shaded portion in the figure) is applied over the entire outer peripheral surface of the cable 21, Under this state, the cable 21 is inserted into the outer casing 32. Then, as the cable 21 is inserted into the outer casing 32, the lubricating grease G applied to the cable 21 is supplied to the grease storage groove 40a as shown in FIG.

  Although it is considered that the lubricating grease G applied to the inner peripheral surface of the liner member 40 flows out of the outer casing 32 due to the long-term use of the cable 21, according to the present invention, the lubricating grease G is grease. The amount of outflow to the outside of the outer casing 32 can be minimized by being held in the storage groove 40a.

  According to the outer casing 32 according to the present embodiment configured as described above, the helical grease storage groove 40a along the inner peripheral surface shape of the flat wire member 41 is formed on the inner peripheral surface of the liner member 40. When the flat wire member 41 is wound around the outer peripheral surface of the liner member 40, the grease storage groove 40 a can be formed on the inner peripheral surface of the liner member 40 by deforming the liner member 40 with the flat wire member 41.

  Therefore, the outer casing 32 having the grease storage groove 40a can be formed using the liner member 40 made of a simple hollow tube (for example, a straw-shaped member or a rubber tube), and the manufacturing process of the outer casing 32 is simplified. Manufacturing cost can be reduced and yield can be improved.

  Further, according to the outer casing 32 according to the present embodiment, the grease storage groove 40a is formed on the liner member 40 so that the adjacent short sides 41a, 41a of the rectangular cross section of the flat wire member 41 are displaced from each other in the radial direction. Since the rectangular wire member 41 is spirally wound with a predetermined winding force so as to twist the rectangular wire member 41 with respect to the liner member 40, the adjacent short sides 41a of the rectangular cross section of the rectangular wire member 41 are formed. 41a are formed so as to be offset from each other in the radial direction, and the adjacent short sides 41a, 41a of the rectangular cross section of the flat wire member 41 are offset from each other in the radial direction on the inner peripheral surface of the liner member 40. A spiral grease storage groove 40a can be formed.

  Furthermore, according to the outer casing 32 according to the present embodiment, the liner member 40, the flat wire member 41, and the covering member 42 are stacked in close contact with each other so as to follow the inner and outer peripheral shapes of the flat wire member 41. Therefore, it is possible to improve the pull-out strength with respect to the other members of each member and to suppress the occurrence of rattling and the generation of abnormal noise due to this.

  Moreover, according to the manufacturing method of the outer casing 32 according to the present embodiment, the first step of preparing the liner member 40, the rectangular wire member 41 is spirally wound with a predetermined winding force, and the liner member 40 is By passing through a second step of deforming and forming a spiral grease storage groove 40a on the inner peripheral surface, and a third step of providing a covering member 42 so as to cover the outer peripheral surface of the flat wire member 41, The outer casing 32 having the grease storage groove 40a can be formed using the liner member 40 made of an empty tube or the like.

  Furthermore, according to the drive device 11 according to the present embodiment, the outer casing 32 used for the drive device 11 is composed of the liner member 40, the rectangular wire member 41 spirally wound around the outer peripheral surface of the liner member 40, and The coating member 42 is provided so as to cover the outer peripheral surface of the flat wire member 41, and a helical grease storage groove 40 a is formed on the inner peripheral surface of the liner member 40 along the inner peripheral surface shape of the flat wire member 41. Therefore, when the flat wire member 41 is wound around the outer peripheral surface of the liner member 40, the liner member 40 is deformed by the flat wire member 41 to form the grease storage groove 40a on the inner peripheral surface of the liner member 40. can do.

  Therefore, the outer casing 32 having the grease storage groove 40a can be formed using the liner member 40 made of a simple hollow tube or the like, and the manufacturing process of the outer casing 32 is simplified to reduce the manufacturing cost and increase the yield. Improvements can be made.

  Further, in the drive device 11 that moves the slide door 13 between the fully closed position and the fully open position, the amount of relative movement of the cable 21 with respect to the outer casing 32 is large, and the chance of exposure of the cable 21 from the outer casing 32 increases. However, in the drive device 11 according to the present embodiment, since the grease storage groove 40a is formed in the outer casing 32, the outflow amount of the lubricating grease G in the outer casing 32 to the outside can be minimized. Smooth opening / closing drive of the slide door 13 can be maintained for a long time.

  Needless to say, 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-described embodiment, the outer casing 32 is applied to the drive device 11 that opens and closes the slide door 13 provided on the side of the vehicle body 12 of the vehicle 10, but the present invention is not limited thereto. In other words, the present invention can be applied to the technology of a control cable that operates a driven object with a cable, such as a cable-type clutch device, a throttle device, and a bicycle brake device.

It is explanatory drawing explaining the mounting site | part with respect to the vehicle of the drive device of a vehicle opening / closing body. It is an enlarged view which expands and shows the drive device of FIG. It is a fragmentary sectional view which shows the detailed structure of the drive device of FIG. It is a fragmentary sectional view explaining the structure of an outer casing. It is a fragmentary sectional view which follows the axial direction of an outer casing. (A), (b), (c) is a manufacturing-process figure which shows the manufacturing procedure of an outer casing.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Vehicle 11 Drive device (Drive device of vehicle opening / closing body)
12 Car body 12a Entrance 12b Car body panel 13 Sliding door (opening / closing body)
14 Slide rail 14a Bent part 15 Roller assembly 16 Arm 17 Receiving rubber 18, 19 Pulley device (pulley)
20 Slide actuator (drive source)
21, 22 Cable 21a Grease application part 22a Cable end part 23 Electric motor 24 Housing 25 Cable drum 25a Cable groove 25b Engaging groove 26 Rotating shaft 28, 29 Drawer part 28a, 29a Tensioner mechanism 30, 31 Pulley housing 30a, 30b Insertion port 31a, 31b Insertion port 32, 33 Outer casing 40 Liner member 40a Grease storage groove 41 Flat wire member 41a Short side (side)
41b Concave groove 42 Cover member G Lubrication grease

Claims (4)

An outer casing for a cable, in which a cable is movably provided and formed by laminating a plurality of members,
A liner member forming an inner layer in sliding contact with the cable;
A rectangular wire member spirally wound around the outer peripheral surface of the liner member to form an intermediate layer;
A covering member provided so as to cover the outer peripheral surface of the flat wire member, and forming an outer layer;
An outer casing for a cable, wherein a spiral grease storage groove is formed on the inner peripheral surface of the liner member along the inner peripheral surface shape of the flat wire member.   The outer casing for a cable according to claim 1, wherein the grease storage groove is formed by being wound around the liner member such that adjacent sides of the rectangular cross section of the flat wire member are displaced from each other in the radial direction. An outer casing for a cable, characterized in that. A method of manufacturing an outer casing for a cable in which a cable is provided movably inside and a plurality of members are laminated,
A first step of preparing a liner member that forms an inner layer in sliding contact with the cable;
A second step of forming a spiral grease storage groove on the inner peripheral surface of the liner member by deforming the liner member by spirally winding a rectangular wire member forming an intermediate layer with a predetermined winding force When,
And a third step of providing a covering member for forming the outer layer so as to cover the outer peripheral surface of the rectangular wire member. A drive device for a vehicle opening / closing body that opens and closes the vehicle opening / closing body by a drive source,
One end of the cable is connected to the drive source so as to be rewound, and the other end is connected to the opening / closing body
A pulley that is provided between the drive source and the opening and closing body and converts a moving direction of the cable;
An outer casing for a cable provided between the pulley and the drive source, in which the cable is movably provided;
The outer casing for the cable is
A liner member forming an inner layer in sliding contact with the cable;
A rectangular wire member spirally wound around the outer peripheral surface of the liner member to form an intermediate layer;
A covering member which is provided so as to cover the outer peripheral surface of the flat wire member and forms an outer layer;
A drive device for a vehicle opening / closing body, wherein a helical grease storage groove is formed on an inner peripheral surface of the liner member along an inner peripheral surface shape of the flat wire member.

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