WO2023188879A1

WO2023188879A1 - Cable device

Info

Publication number: WO2023188879A1
Application number: PCT/JP2023/004806
Authority: WO
Inventors: 昌弘小杉; 啓太浅野; 憲吾前田; 恵美小野口
Original assignee: やまと興業株式会社
Priority date: 2022-03-31
Filing date: 2023-02-13
Publication date: 2023-10-05
Also published as: CN117677777A

Abstract

[Problem] To provide a cable device that, with a simple structure, can prevent water that has entered inside a drum case from infiltrating between the outer cable and the inner wire of each Bowden cable. [Solution] A case half body C1 of a drum case has a case body portion C1a covering a rotating drum 12, a curved portion C1b continuing therefrom, and a tip portion C1c continuing therefrom and integrally embedding a straight terminal portion Oe of an outer cable O of a Bowden cable. A wire guide G1 through which an inner wire I is movably inserted is embedded inside the curved portion. An elastic seal member S1 that extends in the longitudinal direction of an inner passage G1a and has a through-hole S1a through which the inner wire is inserted in a close contact state is attached to the side of the wire guide at the tip portion of the case half body such that one end S1b in the longitudinal direction is fitted into an end face of the wire guide and the other end S1c in the longitudinal direction protruding from the end face abuts the tip portion.

Description

cable device

The present invention relates to a cable device including a pair of Bowden cables, and particularly to a drum case made of synthetic resin that is divided into first and second case halves that are detachably connected to each other, and a drum case that can be housed within the drum case. The present invention relates to a cable device including a first flexible Bowden cable that can be pulled by rotation of a rotating drum in one direction, and a second flexible Bowden cable that can be pulled by rotation of the same rotating drum in the other direction.

Such a cable device is already known as disclosed in Patent Document 1.

JP 2019-56483 Publication

In the cable device described in Patent Document 1, first and second Bowden cables are housed in a synthetic resin drum case consisting of first and second case halves, and the first and second case halves are rotated. Each outer cable of the first and second Bowden cables has first and second case bodies that cover each half circumference of the drum, one end of which is connected to the first and second case bodies, and a curved intermediate part. The inner wires of the first and second Bowden cables extend from the tip of the terminal portion of the outer cable to the first and second bent portions. It extends into the second case body, and its extending end is connected to the rotating drum.

In such a conventional device, the inner wires of the first and second Bowden cables extend into the first and second case bodies from the tips of the terminal parts of the outer cables embedded in the first and second bent parts. It is difficult to prevent water that has entered the drum case from entering between the outer cable and the inner wire of each Bowden cable, and the first and second bent portions are Since the terminal part of the outer cable is embedded integrally, it is difficult to bend and set the terminal part of the outer cable into the bending part forming part of the mold for forming the case half, and the outer cable has a large diameter. Therefore, there was a problem in that the drum case inevitably became larger.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a cable device that can solve the various problems described above all at once with a simple structure.

In order to achieve the above object, the present invention provides a drum case made of synthetic resin that is divided into first and second case halves that are detachably connected to each other, and a drum case that can be accommodated in the drum case and rotated. A cable device comprising a flexible first Bowden cable that can be pulled by rotation of the drum in one direction, and a flexible second Bowden cable that can be pulled by rotation of the rotating drum in the other direction, wherein each of the above-mentioned The case halves include a case body portion that covers one half circumference portion and the other half circumference portion of the rotating drum, a bent portion having one end connected to the case body portion and having at least a middle portion curved, and the other end of the bent portion. and a distal end portion in which the linear terminal portion of the outer cable of each of the Bowden cables is integrally embedded, and the inner wire of each of the Bowden cables is movably inserted into the bent portion. A curved cylindrical wire guide is incorporated, and the wire guide is formed with an internal passage through which the inner wire is inserted, extending from a first end surface on the case body side to a second end surface on the distal end side. In order to prevent water in the drum case from entering between the outer cable and the inner wire, the second end surface of the wire guide is provided with a wire that extends in the longitudinal direction of the inner passage and holds the inner wire in close contact with the outer cable. An elastic seal member having a through hole for insertion has one longitudinal end fitted into the second end surface, and the other longitudinal end protruding from the second end surface of the case half. The first feature is that it is attached so as to come into contact with the tip.

Further, in addition to the first feature, the present invention provides that the other end of the elastic sealing member is a part of the case half, except for opposing surfaces of both other ends that face each other when the two case halves are assembled. It is formed as a rectangular parallelepiped with a U-shaped (channel-shaped) cross section in which a concave groove extending in the direction in which both the case halves are arranged is formed on the distal end surface of the distal end side, and an inner wire is attached to the distal end of the case half. A cylindrical protrusion that protrudes into the recessed groove of the elastic sealing member while being movably inserted thereinto, and an annular groove that receives both sides of the recessed groove of the elastic sealing member is formed between the cylindrical protrusion and the cylindrical protrusion. In this way, an inward protruding wall surrounding the cylindrical protrusion is formed, and the inner width of the protruding wall is smaller than the width between the outermost edges of both sides of the recessed groove, and the cylindrical protrusion The width of the outer circumferential wall of is larger than the inner width of the recessed groove, and when both sides of the recessed groove of the elastic seal member are inserted into the annular groove, the elastic seal member is contracted and the protrusion is A second feature is that it is in close contact with the outer peripheral wall and the wall surface of the protruding wall to prevent water in the drum case from entering between the outer cable and the inner wire.

In addition to the second feature, the present invention provides that the other end of the elastic seal member has a rectangular cross section, and when the wire guide is assembled into the bent portion, the elastic seal member A third feature is that a part of the other end of the elastic seal member protrudes outward from the mating surface of the bent portion, and the other ends of the elastic seal member are pressed against each other when the two case halves are assembled. shall be.

Further, in addition to any one of the first to third features, the present invention provides that the elastic seal member has a constricted recess between the one end portion and the other end portion, the cross section of which is narrower than those of the one end portion and the other end portion; A side surface of the second end surface of the wire guide opposite to the mating surface of the bent portion has a size that allows the one end of the elastic sealing member to fit therein, and has a size that allows the one end of the elastic sealing member to fit thereinto, and extends inward to the internal passage. a first seal member holding hole with a rectangular cross section extending in the first seal member holding hole; a second seal member holding hole having a rectangular cross section that connects the end face and extends inwardly to the internal passage; the width of the constricted recess is larger than the width of the second seal member holding hole; A fourth feature is that the constriction recess is press-fitted into the second seal member holding hole when the member is assembled into the wire guide.

Further, in addition to any one of the first to fourth features, the present invention provides that the through hole of the elastic sealing member has a plurality of holding grooves for holding grease in the axial direction of the inner wire so as to surround the inner wire. The fifth feature is that it is provided.

Further, in addition to any one of the first to fifth features, the present invention provides that the curved back surface of the wire guide extends from the vicinity of the first end face to the vicinity of the second end face to connect the internal passage to the outside. A back split is formed to be exposed to the second end surface, and an end of the back split on the second end surface side is connected to an opening formed in the bent part of the case half so as to communicate the inner and outer surfaces of the case half. The sixth feature is that it is connected.

Further, in addition to any one of the first to sixth features, the present invention provides a seventh feature that when the two case halves are assembled, the wire guide is brought into close contact with the concave groove of the bent portion of the case half. Features.

Note that in the present invention, "covering half the circumference of the rotating drum" in a strict sense includes not only covering exactly half the circumference of the rotating drum, but also covering a portion close to the half circumference.

According to the present invention, each case half of the drum case includes a case main body portion that covers one half circumference portion and the other half circumference portion of the rotating drum, a bent portion having one end connected to the case main body portion, and the other end of the bent portion. a curved tube, which has a distal end portion in which the straight end portion of the outer cable of each Bowden cable is integrally embedded, and has an internal passage through which the inner wire of each Bowden cable is inserted within the bent portion; An elastic sealing member having a through hole extending in the longitudinal direction of the internal passage and through which the inner wire is inserted in a tight state is disposed on the second end surface of the wire guide on the distal end side, and the elastic sealing member has a through hole extending in the longitudinal direction of the internal passage and through which the inner wire is inserted in a tight state. The second end surface is fitted into the second end surface, and the other longitudinal end portion protruding from the second end surface is attached so as to abut against the distal end portion of the case half. As a result, the tip of the terminal end of the outer cable of each Bowden cable can be reliably covered with the elastic sealing member in which the inner wire is tightly inserted into the through hole. This can be reliably prevented by simply arranging an elastic seal member on the second end surface of the wire guide. Furthermore, since the outer cable is not inserted into the wire guide, the wire guide does not become large and the entire cable device can be downsized. In addition, since only the linear end portion of the outer cable is integrally molded into the case half, it is easy to attach the outer cable to the case half, while the curved portion of the outer cable is integrally molded. Therefore, the preparatory work before molding can be simplified. Furthermore, while the intrusion of water between the outer cable and the inner wire is reliably prevented, the slidability of the inner wire is not inhibited, so that stable operation of the cable device can be realized at all times.

According to the second feature, the inner width of the protruding wall forming the annular groove that receives both sides of the recessed groove of the elastic seal member is smaller than the width between the outermost sides of both sides of the recessed groove, and Since the width of the outer circumferential wall of the cylindrical protrusion protruding from the tip of the body is larger than the inner width of the recessed groove, when both sides of the recessed groove of the elastic seal member are inserted into the annular groove, the elastic seal member Since it is contracted and comes into close contact with the outer circumferential wall of the protrusion and the wall surface of the protruding wall, it is possible to reliably prevent water in the drum case from entering between the outer cable and the inner wire.

Particularly, according to the third feature of the present invention, the cross section of the other end of the elastic seal member is formed in a rectangular shape, so that a part of the other end extends beyond the mating surface of the curved portion of the case half. Since the other ends of the elastic seal members are pressed against each other when the case halves are assembled, the sealing properties of the elastic seal members can be improved when the case halves are assembled.

According to the fourth feature, the width of the constriction recess of the elastic seal member is larger than the width of the second seal member holding hole, and the constriction recess is press-fitted into the second seal member holding hole when the elastic seal member is assembled into the wire guide. As a result, the inner wire inserted into the through hole can be brought into closer contact with the inner wall of the through hole, and the function of the elastic seal member is to prevent water in the drum case from entering between the outer cable and the inner wire. can be further increased. Moreover, since the first and second seal member holding holes are formed on the opposite side of the mating surface of the curved portion of the wire guide, after inserting the elastic seal member into those seal member holding holes, Since the seal member holding hole is closed by the first and second case halves, the inserted elastic seal member will not come out even if the seal member holding hole is not closed with a special closing member.

Particularly, according to the fifth feature, the through hole of the elastic sealing member is provided with a plurality of holding grooves for holding grease in the axial direction of the inner wire so as to surround the inner wire, so that the through hole through which the inner wire is inserted is secured. Waterproofness can be ensured.

Particularly, according to the sixth feature, a back split is formed on the back surface of the curved wire guide and extends from the vicinity of the first end face to the vicinity of the second end face to expose the internal passage to the outside. The end on the end surface side is connected to the opening formed in the curved part of the case half so that the inner and outer surfaces of the case half communicate with each other, so that water that has entered the internal passage of the wire guide can be removed. The liquid can be reliably discharged to the outer surface of the case half from the second end surface side portion of the back split formed on the back surface.

In addition, especially according to the seventh feature, when the two case halves are assembled, the wire guide comes into close contact with the concave groove in the curved part of the case half, which causes the wire guide to rattle within the curved part and cause abnormal noise. can be avoided.

A partially cutaway overall schematic diagram showing a first embodiment in which a cable device according to the present invention is applied to a throttle operation system of a motorcycle. An exploded perspective view of the vicinity of the accelerator grip of the first embodiment Perspective view from the direction of arrow 3 in Figure 1 4(a) is a perspective view of the first wire guide in FIG. 3, FIG. 4(b) is its right side view, and FIG. 4(c) is its left side view. Figure 5 is a partially cutaway overall schematic diagram showing the state of both case halves in Figure 2 before assembly, and an enlarged view of a portion thereof. Enlarged perspective view of the elastic seal member in FIG. 5 A diagram showing the part shown in the enlarged view of Figure 5 in a state before installation with the wire guide turned over. A perspective view of the drum case of the second embodiment Front view of the drum case of the third embodiment Diagram showing the drum case in Figure 9 with the boot attached.

(First embodiment)
First, a first embodiment of the present invention will be described with reference to FIGS. 1 and 2. This first embodiment is an example in which the cable device CA of the present invention is applied to a throttle valve operation system of a vehicle, for example, a motorcycle engine. are used separately for valve opening and closing operations.

An accelerator grip 11 is fitted and supported at one end of the left and right sides of the handlebar 10 of the motorcycle so as to be rotatable around the axis of the handlebar 10, and its support structure is well known in the art, so a description thereof will be omitted. A rotating drum 12 is connected to the inner end of the accelerator grip 11 so as to rotate integrally therewith.

On the other hand, a throttle drum 30 is rotatably supported on a throttle body T provided in the intake system of the on-vehicle engine, and this throttle drum 30 rotates in conjunction with a throttle valve (not shown) for adjusting the amount of intake air. are connected like this. A throttle drum 30 is operatively connected to the rotating drum 12 via first and second Bowden cables B1 and B2. A return spring (not shown) is connected to the throttle drum 30 to always bias it in the valve closing direction.

The cable device CA includes a drum case C made of synthetic resin that accommodates a rotating drum 12, and a unidirectional rotation of the rotating drum 12 that can be accommodated in the drum case C, so that the throttle drum 30 can be pulled in the valve opening direction. It includes a flexible first Bowden cable B1 and a flexible second Bowden cable B2 that can be operated to pull the throttle drum 30 in the valve opening direction by rotating the rotary drum 12 in the other direction.

Both the first and second Bowden cables B1 and B2 have the same structure, and each has a flexible inner wire I and a flexible cable that guides the sliding of the inner wire I by inserting the inner wire I inside. and an outer cable O.

The drum case C is divided into two halves, with first and second case halves C1 and C2 being removably connected to each other by suitable connecting means (for example, a plurality of bolts 14). The drum case C is arranged adjacent to the inner end side of the accelerator grip 11, and the handlebar 10 is integrally sandwiched between the first and second case halves C1 and C2. It is fixed at 10. The first and second case halves C1 and C2 are each integrally molded by injection molding of synthetic resin, as will be described later.

The first case half C1 includes a first case main body C1a formed in a hollow semi-disc shape so as to cover one half circumference of the rotating drum 12, and a first case main body C1a having one end connected to the first case main body C1a. It integrally includes a bent portion C1b and a first tip portion C1c continuous to the other end of the first bent portion C1b. The first curved portion C1b extends inwardly in the axial direction of the handlebar 10 from the first case body portion C1a, that is, toward the handle post side, with at least the intermediate portion (substantially the entire portion in the first embodiment) being curved. As shown by the dotted line in FIG. 3, the width is reduced from the first case main body C1a toward the first tip C1c. Further, a linear terminal portion Oe of an outer cable O of the first Bowden cable B1 is integrally embedded in the first tip portion C1c, and an inner wire of the first Bowden cable B1 is embedded in the first bent portion C1b. A first wire guide G1, which is movably inserted through I, is incorporated. Note that the linear end portion Oe of the outer cable O embedded in the end portion C1c of the case half body C1 also includes the end portion of an adjuster that is arranged at the end of the end portion Oe of the outer cable O as necessary. shall be included.

On the other hand, the second case half C2 is formed in a hollow semi-disc shape so as to cover the other half circumference of the rotating drum 12, and is fastened to the first case main body C1a with bolts 14. It integrally includes a second bent part C2b, one end of which is connected to the second case main body part C2a, and a second tip part C2c, which is connected to the other end of this second bent part C2b. The second curved portion C2b extends inwardly in the axial direction of the handlebar 10 from the second case main body portion C2a, that is, toward the handle post side, with at least an intermediate portion (substantially the entire portion in the first embodiment) being curved. The second case body portion C2a is formed so that its width decreases as it goes toward the second tip portion C2c. Further, a linear terminal portion Oe of an outer cable O of the second Bowden cable B2 is integrally embedded in the second tip portion C2c, and an inner wire of the second Bowden cable B2 is embedded in the second bent portion C2b. A second wire guide G2, which is movably inserted through I, is incorporated. Note that the linear end portion Oe of the outer cable O embedded in the end portion C2c of the case half body C2 also includes the end portion of an adjuster that is arranged at the end of the end portion Oe of the outer cable O as necessary. shall be included.

The opposing mating surfaces of the first and second case main bodies C1a and C2a have substantially semicircular concave

curved surfaces

51 and 52 at their center portions corresponding to the handlebar 10, and the concave

curved surfaces

51 and 52 Flat surfaces are formed adjacent to each other on both sides. The handlebar 10 is sandwiched and held between the concave

curved surfaces

51 and 52, and the opposing flat surfaces are in direct contact with each other and tightly joined with bolts 14. Note that a rotation preventing means (for example, a concave-convex engaging means), not shown, is provided between at least one of the concave

curved surfaces

51, 52 and the fitting surface of the handlebar 10 to prevent relative rotation therebetween.

Further, in the first embodiment, the concave

curved surfaces

51 and 52 are formed on the thick side wall portions of the first and second case body portions C1a and C2a on one side in the axial direction of the handlebar 10; Concave curved surfaces 61 and 62 having a slightly larger diameter than the concave

curved surfaces

51 and 52 and having a substantially semicircular arc shape are formed on the side wall portion on the other side in the direction. The concave

curved surfaces

61 and 62 loosely (therefore, are rotatable) surround the small diameter inner end 11m of the accelerator grip 11, and the rotating drum 12 is integrated with the inner end of the small diameter inner end 11m. Continuously installed. Note that the cross-sectional shape of the concave

curved surfaces

51, 52; 61, 62 described above may be a strict semicircular shape, or one of the concave

curved surfaces

51, 61 may have a slightly sub-arc shape as in the first embodiment. In addition, the other concave

curved surfaces

52 and 62 may be slightly arched.

Further,

concave grooves

41 and 42 recessed from the mating surfaces f1 and f2 are curved and formed in the first and second bent portions C1b and C2b along the longitudinal direction of the first and second bent portions C1b and C2b, respectively. , the first and

second grooves

41 and 42 are curved in the same way as the first and second curved portions C1b and C2b, and approach each other from the second case main body portion C2a toward the second tip portion C2c. Second wire guides G1, G2 are incorporated.

In addition, the first and second tip portions C1c and C2c connected to the other ends of the first and second bent portions C1b and C2b are made of an elastic material with the mating surfaces f1 and f2 of both bent portions C1b and C2b butted against each other. They are removably connected via a boot J made of (for example, rubber).

Next, with further reference to FIGS. 3 to 7, the first and second wire guides G1 and G2 will be described.

The first and second wire guides G1 and G2, which are incorporated into the

grooves

41 and 42 of the first and second bent portions C1b and C2b, are made of engineered plastic such as POM and fit into the

grooves

41 and 42 without play. The first and second case body parts C1a and C2a are shaped to curve while narrowing the interval from the first and second case body parts C1a and C2a toward the first and second tip parts C1c and C2c so that they can fit together. Together, they are each formed as a cylindrical body that curves while approaching each other from the first and second case body portions C1a and C2a toward the first and second tip portions C1c and C2c. As shown in FIGS. 4(b) and 4(c), internal passages G1a and G2a through which the inner wires I of the Bowden cables B1 and B2 are inserted are located on the first and second case main body parts C1a and C2a. It is formed so as to extend from the first end surfaces G1b, G2b to the second end surfaces G1c, G2c on the side of the first and second tip portions C1c, C2c.

The first and second wire guides G1 and G2 have first and second bent portions C1b extending from the vicinity of the first end surfaces G1b and G2b in a state where they are assembled to the first and second case halves C1 and C2. , C2b, and a first protrusion G1d, G2d extending toward the virtual plane including the mating surfaces f1, f2 of Two protrusions G1e and G2e are formed, respectively, and two protrusions G1d and G2d extending from both directions; G1e and G2e abut each other on the virtual plane.

As shown in FIGS. 5 and 6, the second end surfaces G1c and G2c of the wire guides G1 and G2 are provided with through holes S1a and S2a that extend in the longitudinal direction of the internal passages G1a and G2a and allow the inner wire I to be inserted therethrough in a tight state. The elastic seal members S1, S2 have one longitudinal end portion S1b, S2b fitted into the second end surface G1c, G2c, and the other longitudinal end portion S1c, S2c protrudes from the second end surface G1c, G2c. can be installed.

The elastic seal members S1 and S2 are made of an elastic material such as rubber, and have a constricted recess S1d having a narrower cross section between the one end portion S1b, S2b and the other end portion S1c, S2c. S2d is formed. Further, one end portion S1b, S2b of the elastic seal members S1, S2 is attached to the side surface opposite to the mating surfaces f1, f2 of the bent portions C1b, C2b on the second end surfaces G1c, G2c side of the wire guides G1, G2. First seal member holding holes G1f, G2f with a rectangular cross section are formed to have a size that can be fitted into the inner passages G1a, G2a and extend inwardly to the internal passages G1a, G2a, and the first seal member holding holes G1f, G2f and the second end surface G1c are formed. , G2c, the first seal member holding holes G1f, G2f are narrower than the first seal member holding holes G1f, G2f and have a size that can fit the constricted recesses S1d, S2d. Second seal member holding holes G1g, G2g with a rectangular cross section are formed connecting the two end faces G1c, G2c and extending inward to the internal passages G1a, G2a. The widths of the constricted recesses S1d and S2d are larger than the widths of the second seal member holding holes G1g and G2g, and when the elastic seal members S1 and S2 are assembled into the wire guides G1 and G2, the constricted recesses S1d and S2d are connected to the second seal member holding holes G1g and G2g. It is press-fitted into the holding holes G1g and G2g.

In addition, as shown in FIG. 5 and FIG. 7 which shows the portion shown in the partially enlarged view of FIG. 5 in a state before installation with the wire guide turned over, the other ends S1c and S2c of the elastic seal members S1 and S2 are shown in FIG. When both case halves C1 and C2 are assembled, both case halves C1 are attached to the tip surfaces of the distal ends C1c and C2c of the case halves C1 and C2, excluding the opposing surfaces of both other end portions S1c and S2c that face each other. , C2 is formed as a rectangular parallelepiped with a U-shaped (channel-shaped) cross section and has a recessed groove 70 extending in the direction in which the case halves C1 and C2 are arranged. A cylindrical protrusion 72 protrudes into the concave groove 70 of the elastic seal members S1, S2 while being inserted into the concave groove 70 of the elastic seal members S1, S2, and both sides 71 of the concave groove 70 of the elastic seal members S1, S2 are inserted between the cylindrical protrusion 72 and the cylindrical protrusion 72. An inward protruding wall 76 is formed to surround the cylindrical protrusion 72 and form an annular groove 74 for receiving the cylindrical protrusion. The inner width a of the protruding wall 76 is smaller than the width b between the outermost sides of both sides 71 of the recessed groove 70, and the width c of the outer peripheral wall of the cylindrical protrusion 72 is the inner width d of the recessed groove 70. When the both sides 71 of the recessed grooves 70 of the elastic seal members S1 and S2 are inserted into the annular groove 74, the elastic seal members S1 and S2 are contracted and the outer circumferential wall of the protrusion 72 and the protruding wall 76, thereby preventing water in the drum case C from entering between the outer cable O and the inner wire I.

Furthermore, when the other end portions S1c, S2c of the elastic seal members S1, S2 are assembled into the first and second bent portions C1b, C2b of the wire guides G1, G2, a portion of the other end portions S1c, S2c The elastic seal members protrude outward from the first and second bent portions C1b and C2b, and the other end portions S1c and S2c of the elastic seal members are pressed against each other when the first and second case halves C1 and C2 are assembled.

Further, the inner wire I is coated or shrink tube processed, and the through holes S1a and S2a of the elastic seal members S1 and S2 are provided with holding grooves S1e and S2e for holding grease so as to surround the inner wire I. A plurality of wires are provided along the inner wire I.

As shown in FIGS. 3 and 4(a), on the back surfaces (outer curved surfaces) of the curved wire guides G1 and G2, there are curved lines extending from the vicinity of the first end surfaces G1b and G2b to the vicinity of the second end surfaces G1c and G2c. 1. Back splits G1h and G2h are formed that extend to the front of the seal member holding holes G1f and G2f and expose the internal passages G1a and G2a to the outside, while the first and second bent portions C1b and C2b of the case halves C1 and C2 are formed. In this case, openings C1d and C2d that communicate the inner and outer surfaces of the case halves C1 and C2 cut out the mating surfaces f1 and f2, respectively, so that the second end surfaces G1c and G2c sides of the back splits G1h and G2h are cut out. formed adjacent to the end of the Note that in the first embodiment, these openings C1d and C2d constitute one opening by aligning the mating surfaces f1 and f2, but they may be formed as separate openings. .

Next, the operation of the first embodiment will be explained. While driving the motorcycle, for example, when the driver rotates the accelerator grip 11 in one direction (acceleration direction), the rotation is transmitted to the throttle drum 30 via the rotating drum 12 and the first Bowden cable B1, The engine accelerates as the throttle valve rotates in the opening direction. Furthermore, by rotating the accelerator grip 11 in the other direction (deceleration direction), the rotation is transmitted to the throttle drum 30 via the rotating drum 12 and the second Bowden cable B2, and the throttle valve is rotated in the closing direction. The engine slows down.

In the first embodiment, the first and second case halves C1 and C2, which constitute the drum case C in a divided manner, include the first and second case body parts C1a and C2a, the first and second bent parts C1b, as described above. . are insert-molded, and curved cylindrical wire guides G1 and G2 having internal passages through which the inner wire I is inserted are incorporated into the first and second bent portions C1b and C2b.

This makes it possible to reliably cover the ends of the terminal parts Oe of the outer cables O of the respective Bowden cables B1 and B2 with the elastic seal members S1 and S2 in which the inner wires I are tightly inserted into the through holes S1a and S2a. , water inside the drum case C can be prevented from entering between the outer cable O and the inner wire I with a simple structure that only requires elastic seal members S1 and S2 to be placed on the second end faces G1c and G2c of the wire guides G1 and G2. can be prevented. Moreover, since the outer cable O is not inserted into the wire guides G1, G2, the wire guides G1, G2 do not become large, and the entire cable device can be downsized. In addition, since only the linear terminal portion Oe of the outer cable O is integrally molded in the case halves C1 and C2, it is easy to attach the outer cable O to the case halves C1 and C2, and the outer cable O Since the curved portions are not integrally molded, preparatory work before molding can be simplified.

Moreover, the other end portions S1c, S2c of the elastic seal members S1, S2 are the same as those of the case halves C1, C2, except for the opposing surfaces of the other end portions S1c, S2c, which face each other when the two case halves C1, C2 are assembled. It is formed as a rectangular parallelepiped with a U-shaped (channel-shaped) cross section with a recessed groove 70 extending in the direction in which both case halves C1 and C2 are arranged on the end face of the tip portions C1c and C2c. In the tip portions C1c and C2c of C2, there is a cylindrical protrusion 72 that protrudes into the concave groove 70 of the elastic seal members S1 and S2 while movably inserting the inner wire I therein. An inward protruding wall 76 surrounding the cylindrical protrusion 72 is formed to form an annular groove 74 that receives both sides 71 of the recessed groove 70 of the elastic seal members S1, S2, and the inner width a of the protruding wall 76 is is formed smaller than the width b between the outermost edges of both sides 71 of the recessed groove 70, and the width c of the outer circumferential wall of the cylindrical protrusion 72 is formed larger than the inner width d of the recessed groove 70. When the both sides 71 of the recessed groove 70 of the seal members S1, S2 are inserted into the annular groove 74, the elastic seal members S1, S2 are contracted and come into close contact with the outer peripheral wall of the protrusion 72 and the wall surface of the protrusion wall 76. , water in the drum case C can be reliably prevented from entering between the outer cable O and the inner wire I.

Further, the width of the constriction recesses S1d, S2d is larger than the width of the second seal member holding holes G1g, G2g, and when the elastic seal members S1, S2 are assembled into the wire guides G1, G2, the constriction recesses S1d, S2d are connected to the second seal member holding holes G1g, G2g. Since the inner wires I are press-fitted into the holding holes G1g and G2g, the inner wires I inserted through the through holes S1a and S2a can be brought into closer contact with the inner walls of the through holes S1a and S2a, and the water inside the drum case C can be removed from the outer cables. The function of the elastic sealing members S1 and S2 for preventing intrusion between O and the inner wire I can be further enhanced. Moreover, since the first and second seal member holding holes G1f, G2f; G1g, G2g are formed on the opposite side of the mating surfaces f1, f2 of the bent portions C1b, C2b of the wire guides G1, G2, After inserting the elastic seal members S1, S2 into the seal member holding holes G1f, G2f; G1g, G2g, the seal member holding holes G1f, G2f; Since they are closed, the inserted elastic seal members S1 and S2 will not come out even if the seal member holding holes G1f, G2f; G1g, G2g are not closed with special closing members.

Furthermore, a portion of the other end portions S1c, S2c of the elastic seal members S1, S2 protrudes outward from the mating surfaces f1, f2 of the bent portions C1b, C2b of the case halves C1, C2, and Since the other ends S1c and S2c of the elastic seal members S1 and S2 are pressed against each other when the case halves C1 and C2 are assembled, the sealing performance of the elastic seal members S1 and S2 can also be improved when the case halves C1 and C2 are assembled.

Further, in the through holes S1a, S2a of the elastic seal members S1, S2, a plurality of retaining grooves S1e, S2e for retaining grease are provided in the axial direction of the inner wire I so as to surround the inner wire I. Reliable waterproof properties of the S1a and S2a holes can be ensured.

Further, on the back surfaces of the curved wire guides G1 and G2, back splits G1h and G2h are formed which extend from the vicinity of the first end faces G1b and G2b to the vicinity of the second end faces G1c and G2c and expose the internal passages G1a and G2a to the outside. The ends of the back splits G1h and G2h on the second end surfaces G1c and G2c are formed into bent portions C1b and C2b of the case halves C1 and C2 so as to communicate the inner and outer surfaces of the case halves C1 and C2. water that has entered the internal passages G1a, G2a of the wire guides G1, G2 is removed from the second end surfaces G1c, G2c side of the back splits G1h, G2h formed on the back surface. It is possible to reliably discharge the liquid to the outer surfaces of the case halves C1 and C2.

Furthermore, when assembling both case halves C1 and C2, the wire guides G1 and G2 are in close contact with the

grooves

41 and 42 of the bent portions C1b and C2b of the case halves C1 and C2, so that the wire guides G1 and G2 are not attached to the bent portions. It is possible to avoid rattling within C1b and C2b, which may cause abnormal noise.

Furthermore, when the first and second wire guides G1 and G2 are assembled to the first and second case halves C1 and C2, the first and second wire guides are connected to each other from the vicinity of the first end surfaces G1b and G2b. The first projections G1d, G2d extend toward a virtual plane including the mating surfaces f1, f2 of the curved portions C1b, C2b, and the intermediate portions of the first end surfaces G1b, G2b and the second end surfaces G1c, G2c toward the virtual plane. Second protrusions G1e and G2e extending from each other are formed, and two protrusions G1d and G2d extending from both directions; G1e and G2e abut each other on the virtual plane, so that the first and second case halves C1, C2 can be reinforced by these first projections G1d, G2d and second projections G1e, G2e.

Although the first embodiment of the present invention has been described above, the present invention is not limited to the first embodiment, and various design changes can be made without departing from the gist thereof.

For example, in the first embodiment, the cable device CA is applied to the throttle valve operating system of a motorcycle engine, but the cable device CA of the present invention is applicable to an operating system other than the throttle valve operating system of a vehicle. It is also applicable to various operating systems other than vehicles.

(Second embodiment)
Next, a second embodiment will be described with reference to FIG. Here, differences from the first embodiment will be explained. Note that for common parts with the first embodiment, the same names and symbols will be used, and redundant explanation will be omitted.

Referring to FIGS. 1 and 2, in the first embodiment, the opposing mating surfaces (flat surfaces formed on both sides of the concave curved surfaces 51 and 52) of the first and second case main bodies C1a and C2a are By joining with

bolts

14, 14, the handlebar 10 is integrally sandwiched between the first and second case halves C1, C2 which are divided into two parts.

On the other hand, in the second embodiment, one bolt 15 is added as shown in FIG. The side mating surfaces f1 and f2 (see FIG. 2) were configured to be tightly joined.

In the second embodiment, substantially cylindrical side walls C1e, C2e of the first and second case body parts C1a, C2a are provided on the curved surfaces inside (upper side in FIG. 8) of the first and second bent parts C1b, C2b. forming first and second ribs C1f and C2f extending along the curved surface to the other ends of the first and second curved parts C1b and C2b, and the other end C1h of the first and second ribs C1f and C2f. , C2h are tightly joined with bolts 15. Note that in order to prevent the head of the bolt 15 from protruding outward from the second case half C2, the thickness of the other end C2h of the second rib C2f in the case mating direction is equal to that of the other end of the first rib C1f. Set it to be thinner than the thickness of C1h.

According to the second embodiment, when the first and second case halves C1 and C2 are assembled, the other ends S1c and S2c (see FIG. 4) of the elastic seal members S1 and S2 are pressed against each other more strongly. 1. The sealing properties of the elastic seal members S1 and S2 can be further improved when the second case halves C1 and C2 are assembled. In addition, by forming the first and second ribs C1f and C2f on the first and second case halves C1 and C2, the rigidity of the first and second bent portions C1b and C2b is increased, so that when the motorcycle falls over, Damage to the first and second bent portions C1b and C2b can be prevented.

(Third embodiment)
Next, a third embodiment will be described with reference to FIGS. 9 and 10. Here, differences from the first and second embodiments will be explained. Note that for common parts with the first and second embodiments, the same names and symbols will be used, and redundant explanation will be omitted.

Referring to FIG. 2, in the first embodiment, when the first and second case halves C1 and C2 are assembled, the mating surfaces of the first and second tip portions C1c and C2c are butted against each other, and the first , boots J made of an elastic material were attached to the second tips C1c and C2c.

On the other hand, in the third embodiment, as shown in FIG. C1c and C2c were provided to protrude, and separate boots J1 and J2 were attached to the first and second tip portions C1c and C2c, respectively, as shown in FIG. In addition, the outer cables O of the first and second Bowden cables B1 and B2 are attached to the first and second tip portions C1c and C2c, which are formed by bifurcating the other ends of the first and second bent portions C1b and C2b. , O (see FIG. 2) are embedded integrally.

According to the third embodiment, since the first tip C1c and the second tip C2c are configured separately, the boot J does not straddle the mating surface between the first and second tip C1c and C2c. As a result, even if water intrudes into the mating surfaces f1 and f2 on the other end side of the first and second bent portions C1b and C2b, it is possible to prevent the water from entering into the boot J, and the drum The waterproofness of the case C can be further improved.

B1, B2 first and second Bowden cables, C drum case, C1, C2 first and second case halves, C1a, C2a first and second case main parts, C1b, C2b first and second bent parts, C1c, C2c first and second tip, G1, G2 first and second wire guide, G1a, G2a internal passage, G1b, G2b first end face, G1c, G2c second end face, G1f, G2f first seal member holding Hole, G1g, G2g second seal member holding hole, G1h, G2h back split, I inner wire, O outer cable, Oe outer cable terminal, S1, S2 elastic seal member, S1a, S2a through hole, S1b, S2b one end, S1c, S2c other end, S1d, S2d constricted recess, S1e, S2e holding groove, 12 rotating drum, 41, 42 recessed groove, 70 recessed groove, 71 both sides of recessed groove, 72 cylindrical protrusion, 74 annular groove, 76 Projecting wall

Claims

A synthetic resin drum case (C) that is divided into first and second case halves (C1, C2) that are removably connected to each other, and a rotating drum that can be housed within the drum case (C). (12) A flexible first Bowden cable (B1) that can be pulled by rotating in one direction; and a second flexible Bowden cable (B2) that can be pulled by rotating the rotating drum (12) in the other direction. ),
Each of the case halves (C1, C2) includes a case main body (C1a, C2a) that covers one half circumference and the other half circumference of the rotating drum (12), and one end of the case main body (C1a, C2a). The bent portions (C1b, C2b) are continuous and have at least a curved intermediate portion, and the outer cable (O) of each of the Bowden cables (B1, B2) is connected to the other end of the bent portions (C1b, C2b). It has a tip part (C1c, C2c) in which a linear end part (Oe) is integrally embedded, and the inner wire of each of the Bowden cables (B1, B2) is inserted into the bent part (C1b, C2b). Curved cylindrical wire guides (G1, G2) into which (I) is movably inserted are incorporated,
The wire guide (G1, G2) has an internal passage (G1a, G2a) through which the inner wire (I) is inserted, from the first end surface (G1b, G2b) on the side of the case main body (C1a, C2a) to the tip. is formed so as to extend to the second end surface (G1c, G2c) on the side of the part (C1c, C2c),
In order to prevent water in the drum case (C) from entering between the outer cable (O) and the inner wire (I), the second end surfaces (G1c, G2c) of the wire guides (G1, G2) , an elastic seal member (S1, S2) having a through hole (S1a, S2a) extending in the longitudinal direction of the internal passage (G1a, G2a) and through which the inner wire (I) is inserted in a tight state; One end (S1b, S2b) is fitted into the second end surface (G1c, G2c), and the other end (S1c, S2c) in the longitudinal direction is made to protrude from the second end surface (G1c, G2c). A cable device, characterized in that the cable device is attached so as to come into contact with the tip end portions (C1c, C2c) of the case halves (C1, C2).
The other ends (S1c, S2c) of the elastic seal members (S1, S2) touch the opposing surfaces of the other ends (S1c, S2c) that face each other when the two case halves (C1, C2) are assembled. except for a channel-shaped groove in which a recessed groove (70) extending in the direction in which both the case halves (C1, C2) are lined up is formed on the distal end surface of the case halves (C1, C2) on the distal end portion (C1c, C2c) side; The inner wire (I) is movably inserted into the tips (C1c, C2c) of the case halves (C1, C2), and is formed as a rectangular parallelepiped in cross section. A cylindrical protrusion (72) protruding into the recessed groove (70) and both sides ( an inward protruding wall (76) surrounding the cylindrical protrusion (72) to form an annular groove (74) for receiving the cylindrical protrusion (71); is smaller than the width (b) between the outermost edges of both sides (71) of the recessed groove (70), and the width (c) of the outer peripheral wall of the cylindrical protrusion (72) is smaller than the width (c) of the outer peripheral wall of the recessed groove (70). When the both sides (71) of the recessed groove (70) of the elastic seal member (S1, S2) are inserted into the annular groove (74), the elastic seal member (S1, S2) are contracted and come into close contact with the outer circumferential wall of the protrusion (72) and the wall surface of the protrusion wall (76), and the water in the drum case (C) is absorbed into the outer cable (O) and the protrusion wall (76). Cable device according to claim 1, characterized in that it prevents intrusion between the inner wires (I).
The other end portion (S1c, S2c) of the elastic seal member (S1, S2) is connected to the elastic seal member (S1, S2) when the wire guide (G1, G2) is assembled into the bent portion (C1b, C2b). A part of the other end portions (S1c, S2c) of S2) protrudes outward from the mating surfaces (f1, f2) of the bent portions (C1b, C2b), and the two case halves (C1, C2) are assembled together. The cable device according to claim 2, characterized in that, at times, the other ends (S1c, S2c) of the elastic sealing members (S1, S2) are pressed against each other.
The elastic sealing member (S1, S2) has a constriction recess (S1d, S2d) having a narrower cross section between the one end (S1b, S2b) and the other end (S1c, S2c). , the elastic seal is provided on the side surface of the second end surface (G1c, G2c) of the wire guide (G1, G2) opposite to the mating surface (f1, f2) of the bent portion (C1b, C2b). A first seal member holding hole (G1f, G2f) and the first seal member holding hole (G1f, G2f) narrower than the first seal member holding hole (G1f, G2f) and having a size that allows the constricted recess (S1d, S2d) to fit therein. A second seal member holding hole (G1g, G2g) having a rectangular cross section is formed connecting the second end surface (G1c, G2c) and extending inward to the internal passageway (G1a, G2a); The width of the constriction recess (S1d, S2d) is larger than the width of the second seal member holding hole (G1g, G2g), so that when the elastic seal member (S1, S2) is assembled into the wire guide (G1, G2), 2. The cable device according to claim 1, wherein the constricted recess (S1d, S2d) is press-fitted into the second seal member holding hole (G1g, G2g).
The through holes (S1a, S2a) of the elastic sealing members (S1, S2) are provided with retaining grooves (S1e, S2e) for retaining grease so as to surround the inner wire (I) in the axial direction of the inner wire (I). The cable device according to claim 1, wherein a plurality of cable devices are provided.
The curved back surface of the wire guide (G1, G2) is provided with an inner passageway (G1a, G2a) extending from the vicinity of the first end surface (G1b, G2b) to the vicinity of the second end surface (G1c, G2c). Back splits (G1h, G2h) exposed to the outside are formed, and the ends of the back splits (G1h, G2h) on the second end surface (G1c, G2c) side are connected to the inner and outer surfaces of the case halves (C1, C2). 2. The openings (C1d, C2d) formed in the bent portions (C1b, C2b) of the case halves (C1, C2) are connected to the openings (C1d, C2d) so as to communicate with each other. cable equipment.
When assembling both the case halves (C1, C2), the wire guides (G1, G2) fit into the grooves (41, 42) of the bent portions (C1b, C2b) of the case halves (C1, C2). The cable device according to any one of claims 1 to 6, characterized in that the cable device is in close contact with each other.
The inner curved surfaces of the bent portions (C1b, C2b) of the case halves (C1, C2) are provided with the First and second ribs (C1f, C2f) extending along the curved surface to the other ends of the first and second bent portions (C1b, C2b) are formed, and the first and second ribs (C1f, C2f) Cable device according to claim 1, characterized in that the opposing mating surfaces of the other ends (C1h, C2h) are tightly joined by bolts (15).
The first and second tip portions (C1c, C2c) are provided to protrude from each other end surface (C1j, C2j) of the bent portion (C1b, C2b) of the case half body (C1, C2), and the first, Cable arrangement according to claim 1, characterized in that the second tip (C1c, C2c) is fitted with a separate boot (J1, J2).