JP7498074B2 - Vehicle throttle cable support structure - Google Patents

Description

The present invention relates to a throttle cable support structure for a vehicle.

Conventionally, throttle cable support structures known include one for saddle-ride vehicle engines in which the throttle cable is supported by a stay fastened to the throttle body (see, for example, Patent Document 1), and one for automobile engines in which the throttle cable is supported by a bracket joined to the intake pipe (see, for example, Patent Document 2).

JP 2015-227623 A Japanese Utility Model Application Publication No. 3-41145

In Patent Document 1, in order to properly support the throttle cable using the throttle body, it becomes necessary to extend a plate-shaped stay from the throttle body, which may result in the stay becoming larger and/or the molding of the stay becoming more complicated, which may result in increased costs.
Moreover, in the structure disclosed in Patent Document 2, the throttle cable is supported on the intake pipe by a separate bracket, which increases the number of parts and therefore the cost.
An object of the present invention is to provide a throttle cable support structure for a vehicle that enables the cable support stay to be made smaller and the number of parts to be reduced.

The throttle cable support structure for a vehicle includes an intake device (67) for an engine (23) having an intake pipe (71) connected to a cylinder portion (62), a throttle body (72) connected to the intake pipe (71), and a cable support stay (71a) supporting a throttle cable (81, 82) connected to the throttle body (72), the cable support stay (71a) is fastened to a cable support member (83, 84) having a support cylinder (98, 103) through which the throttle cable (81, 82) is inserted and supported, and is configured as an integral structure with the intake pipe (71) , and the throttle body (72) supports a throttle drum (94) which rotates to open and close a throttle valve (93). the throttle cables (81, 82) comprise a first throttle cable (81) that rotates the throttle drum (94) in a first direction and a second throttle cable (82) that rotates the throttle drum (94) in a second direction opposite to the first direction, the support tubes (98, 103) comprise a first support tube (98) through which the first throttle cable (81) is inserted and supports it, and a second support tube (103) through which the second throttle cable (82) is inserted and supports it, and a second support member (102) that supports the second support tube (103) and a first support member (97) that supports the first support tube (98) are fastened together to the cable support stay (71 a) by a fastening member (96) .

In the above configuration, the first support member (97) is disposed on the fastening surface (71x) to which the fastening member (96) of the cable support stay (71a) is fastened, and the second support member (102) is disposed on the side surface (97j) opposite the fastening surface (71x) of the first support member (97). In a side view, of the length L from the shaft portion (96b) of the fastening member (96) of the second support member (102) to the end portion on the second support tube (103) side, the length L1 where the second support member (102) and the first support member (97) overlap may be longer than the length L2 where the second support member (102) and the first support member (97) do not overlap.

In addition, in the above configuration, the cable support stay (71a) may have a stay-side notch portion (71p) that engages with the second support tube (103), and the first support member (97) may have a notch portion (97f) at a position corresponding to the stay-side notch portion (71p) when attached to the cable support stay (71a) by the fastening member (96).

In addition, in the above configuration, the intake pipe (71) may be formed by casting, and the fastening surface (71x) of the cable support stay (71a) may extend along a throttle valve shaft (92) that supports the throttle valve (93).

In addition, in the above configuration, the attachment portion (103a) of the second support tube (103) to the second support member (102) and the attachment portion (98a) of the first support tube (98) to the first support member (97) may be spaced apart in the vertical direction and offset outward in the vehicle width direction relative to the fastening member (96).

In addition, in the above configuration, the throttle body cover (113) that covers the throttle body (72) from the side may cover at least a portion of the axially forward side of the fastening member (96).

In addition, in the above configuration, the first support member (151) and the second support member (154) may have support member side positioning portions (151c, 154c) that determine the mounting positions relative to the intake pipe (141), and the intake pipe (141) may have an intake pipe side positioning portion (141w) at a position corresponding to the support member side positioning portion (151c, 154c).

In addition, in the above configuration, the support member side positioning portion (151c, 154c) may be configured as a claw shape having a bent portion, and the intake pipe side positioning portion (141w) may be configured as a recess with which the claw shape engages.

In a throttle cable support structure for a vehicle, the cable support stay is fastened to a cable support member equipped with a support tube through which the throttle cable is inserted and supported, and is constructed as an integral structure with the intake pipe, allowing the cable support stay to be made smaller and the number of parts to be reduced.

In the above configuration, the throttle body is equipped with a throttle drum that rotates to open and close the throttle valve, the throttle cable is made up of a first throttle cable that rotates the throttle drum in a first direction and a second throttle cable that rotates the throttle drum in a second direction opposite to the first direction, the support tube is made up of a first support tube through which the first throttle cable is inserted and a second support tube through which the second throttle cable is inserted and supported, and the second support member that supports the second support tube and the first support member that supports the first support tube are fastened together to the cable support stay by a fastening member, so that the fastening structure of the first support member and the second support member to the cable support stay can be simplified.

In addition, in the above configuration, the first support member is disposed on the fastening surface to which the fastening member of the cable support stay is fastened, and the second support member is disposed on the side opposite to the fastening surface side of the first support member, and, in a side view, of the length L from the shaft portion of the fastening member of the second support member to the end portion on the second support tube side, the length L1 where the second support member and the first support member overlap is longer than the length L2 where the second support member and the first support member do not overlap, so rattling and bending of the second support member can be suppressed. Also, there is no need to bend or thicken one of the second support member and the first support member, or to form the stay into a stepped shape, which allows for cost reduction.

In addition, in the above configuration, the cable support stay has a stay-side notch that engages with the second support tube, and the first support member has a notch at a position that corresponds to the stay-side notch when attached to the cable support stay with the fastening member. Therefore, the second support tube can be passed through the stay-side notch and the notch of the second support member, and the second support member can be attached to the cable support stay while easily positioning the second support tube in the cable support stay and the notch of the first support member.

In addition, in the above configuration, the intake pipe is formed by casting, and the fastening surface of the cable support stay extends along the throttle valve shaft that supports the throttle valve, so the second support member and the first support member can be attached appropriately in relation to the direction of the throttle cable.

In addition, in the above configuration, the attachment portion of the second support tube to the second support member and the attachment portion of the first support tube to the first support member are spaced apart in the vertical direction and offset outward in the vehicle width direction relative to the fastening member, so that the spacing between the fastening member and each attachment portion can be secured, and when the fastening member is tightened or loosened with a tool, the second support member and the first support member can be attached without interference between the tool and each attachment portion.

In addition, in the above configuration, the throttle body cover that covers the throttle body from the side covers at least a portion of the axially forward side of the fastening member, so the throttle body cover improves the protection performance of the fastening member, and even if the bolt becomes loose, the bolt comes into contact with the throttle body cover, preventing the bolt from loosening.

In addition, in the above configuration, the first support member and the second support member are provided with a support member side positioning portion that determines the mounting position relative to the intake pipe, and the intake pipe is provided with an intake pipe side positioning portion at a position corresponding to the support member side positioning portion. Therefore, by providing the support member side positioning portion and the intake pipe side positioning portion, when assembling the second support member and the first support member to the intake pipe, the second support member and the first support member can be quickly positioned to a position suitable for fastening, improving the ease of assembly. In addition, the support member side positioning portion and the intake pipe side positioning portion can prevent the second support member and the first support member from shifting or coming off from the intake pipe during assembly.

In addition, in the above configuration, the support member side positioning portion is configured with a claw shape having a bent portion, and the intake pipe side positioning portion is configured with a recess into which the claw shape engages, improving assembly workability with a simple structure.

1 is a left side view showing a motorcycle equipped with a throttle cable support structure according to a first embodiment of the present invention. FIG. FIG. 2 is a perspective view showing a front part of the power unit. FIG. 2 is a perspective view showing a throttle cable support structure. FIG. FIG. 2 is a front view showing the throttle cable support structure. FIG. 4 is a view showing details of the throttle cable support structure. FIG. 4 is a left side view showing the throttle cable support structure. FIG. 2 is a plan view showing the throttle cable support structure. FIG. 6 is a perspective view showing an intake device according to a second embodiment. 10 is a cross-sectional view taken along line XX in FIG. 9. FIG. 11 is a perspective view showing an intake device according to a third embodiment. FIG. FIG.

Embodiments of the present invention will be described below with reference to the drawings. In the description, directions such as front, back, left, right, and up and down are the same as directions relative to the vehicle body unless otherwise specified. In addition, the symbol FR in each figure indicates the front of the vehicle body, the symbol UP indicates the upper side of the vehicle body, and the symbol LH indicates the left side of the vehicle body, and for parts mounted on the vehicle, the direction when mounted on the vehicle is indicated.

First Embodiment
FIG. 1 is a left side view showing a motorcycle 10 equipped with a throttle cable support structure according to a first embodiment of the present invention.
The motorcycle 10 has a front wheel 13 supported via a front fork 12 at the front of a vehicle body frame (not shown) that serves as a skeleton, and a rear wheel 16 supported via a power unit 14 at the rear of the vehicle body frame.
The motorcycle 10 is a scooter-type saddle-ride vehicle in which a seat 17 is disposed behind the front forks 12 and a rider sits astride the seat 17.

The front forks 12 are supported at the front end of the body frame in a steerable manner, with a handlebar 21 attached to the upper end of the front forks 12 , and a front wheel 13 supported at the lower end of the front forks 12 via an axle 22 .
The power unit 14 is supported swingably on the upper rear part of the body frame below the seat, and includes an engine 23 (see FIG. 2) disposed on the front side, and a continuously variable transmission 24 extending rearward from the engine 23. An output shaft 26 is provided at the rear end of the continuously variable transmission 24, and the rear wheel 16 is attached to the output shaft 26. In addition, a rear cushion unit 27, which serves as a shock absorber, is provided between the rear end of the continuously variable transmission 24 and the rear part of the body frame.

Most of the body frame is covered by a body cover 30. The body cover 30 includes a front cover 31, a pair of left and right front side covers 32, a handle cover 33, a pair of left and right leg shields 34, a floor step 36, a pair of left and right floor skirts 37, a center cover 38, a pair of left and right body covers 41, and a rear cover 42.

The front cover 31 covers the front of the upper part of the front fork 12. The front side covers 32 extend to both sides and downward from the front cover 31. The handle cover 33 covers the center of the handle 21. The left and right leg shields 34 cover the rear of the upper part of the front fork 12 and cover the rider's legs from the front. The floor step 36 extends rearward from the lower ends of the left and right leg shields 34 and serves as a footrest for the rider.

The left and right floor skirts 37 extend downward from the left and right edges of the floor step 36. The center cover 38 extends from the rear end of the floor step 36 to below the front end of the seat 17. The left and right body covers 41 extend from the floor step 36 and center cover 38 below the side edges of the seat 17 toward the rear of the vehicle. The rear cover 42 covers the area between the rear ends of the left and right body covers 41 behind the seat 17.

A headlight 44 is disposed on the handle cover 33. A grab rail 45 attached to the body frame is disposed on the upper portion of the left and right body covers 41, and a taillight 46 is disposed on each rear end of the left and right body covers 41 and the rear cover 42.
A side stand 47 is attached to one of the left and right sides (left side) of the lower portion of the body frame, and a main stand 48 is attached to the lower portion of the power unit 14.
The front wheel 13 is covered from above by a front fender 51, and the rear wheel 16 is covered from above by a rear fender 52.

FIG. 2 is a perspective view showing the front part of the power unit 14. As shown in FIG.
The engine 23 includes a crankcase 61 that houses a crankshaft (not shown), and a cylinder section 62 that extends forward from the crankcase 61. The cylinder section 62 is composed of a cylinder block 63 that protrudes forward from the crankcase 61, a cylinder head 64 attached to the cylinder block 63, and a head cover 65 that covers an opening at the front end of the cylinder head 64. An intake device 67 is connected to the upper surface of the cylinder head 64, and an exhaust device 68 is connected to the lower surface.

The intake system 67 comprises an intake pipe 71 connected to the cylinder head 64, a throttle body 72 connected to the rear end of the intake pipe 71, and an air cleaner 74 connected to the rear end of the throttle body 72 via a connecting tube 73.
A fuel injection device 76 that injects fuel into the intake pipe 71 is attached to the front portion of the intake pipe 71. The fuel injection device 76 includes a fuel injection valve 76a, a connector portion 76b to which a wire harness (not shown) that supplies electricity to the fuel injection valve 76a is connected, and a fixing portion 76c that fixes the fuel injection device 76 to the intake pipe 71.

The exhaust system 68 includes an exhaust pipe 78 connected to the cylinder head 64 and a muffler (not shown) connected to the rear end of the exhaust pipe 78 .
A connecting portion 80 is provided on the upper part of the crankcase 61 and behind the throttle body 72, which connects the power unit 14 to the body frame in a swingable manner. The connecting portion 80 has a pair of left and right connecting main bodies 80a at both ends which are attached to the body frame. The left and right connecting main bodies 80a each have a member on the body frame side and a member on the power unit 14 side, and these two members are configured to be rotatable relative to one another and are connected by an elastic body. As a result, the power unit 14 is elastically supported by the body frame.

A first throttle cable 81 serving as a closing throttle cable and a second throttle cable 82 serving as an opening throttle cable are connected to the throttle body 72 .
A cable support stay 71a is provided integrally with the intake pipe 71. A first cable support member 83 serving as a cable support member that supports a first throttle cable 81, and a second cable support member 84 serving as a cable support member that supports a second throttle cable 82 are attached to the cable support stay 71a.
A portion of each of the throttle body 72, the first cable support member 83, and the second cable support member 84 is covered from the sides, above, and below by a throttle body cover 86. The throttle body cover 86 constitutes a part of the intake device 67.

The throttle body cover 86 further covers the end of the cable support stay 71a, the end of each of the first throttle cable 81 and the second throttle cable 82, and a throttle drum 94 (see Figure 3), which will be described in detail later, from the sides, above and below.
The throttle body cover 86 has an upper portion attached to the upper portion of the throttle body 72 with screws 87, and has an opening 86a at its front portion. A portion of each of the first cable support member 83 and the second cable support member 84 (more specifically, the first support cylinder 98 and the second support cylinder 103 shown in FIG. 3) protrudes forward from the opening 86a. Furthermore, a bolt 96 (see FIG. 3) that fastens the first cable support member 83 and the second cable support member 84 to the cable support stay 71a is exposed forward from the opening 86a.

FIG. 3 is a perspective view showing the throttle cable support structure, with the throttle body cover 86 (see FIG. 2) removed from the throttle body 72. As shown in FIG.
The throttle body 72 includes a cylindrical pipe portion 91, a throttle valve shaft 92 which passes through the pipe portion 91 and is rotatably supported by the pipe portion 91, a throttle valve 93 (see FIG. 7) which opens and closes the air passage in the pipe portion 91, and a throttle drum 94 attached to one end of the throttle valve shaft 92. The throttle valve 93 is attached to the throttle valve shaft 92, and is opened and closed by the rotation of the throttle drum 94.

The throttle drum 94 has a pulley shape with an annular groove 94a on the outer periphery formed by two disks 94b, 94c, and a pair of through holes 94d, 94e are formed in the two disks 94b, 94c.
Each of the through holes 94d, 94e is composed of a hole 94f formed in one disc 94b (the inner side in the vehicle width direction) and a notch 94g formed in the other disc 94c (the outer side in the vehicle width direction).
More specifically, the cutout portion 94g is composed of a hole 94h and a slit 94k formed from the inner peripheral surface of the hole 94h to the outer peripheral surface 94j of the disk 94c.

The first cable support member 83 is composed of a first plate 97 (first support member) as a plate-shaped closed side support member fastened to the cable support stay 71a by bolts 96 as fastening members, and a first support tube 98 as a cylindrical, curved closed side support tube attached to the first plate 97 by welding or brazing.
The second cable support member 84 is composed of a second plate 102 (second support member) as a plate-shaped open side support member fastened to the cable support stay 71a together with the first plate 97 by bolts 96, and a second support tube 103 as a cylindrical, bent open side support tube attached to the second plate 102 by welding or brazing.
That is, the first cable support member 83 and the second cable support member 84 are fastened together to the cable support stay 71 a by a bolt 96 .

The first throttle cable 81 includes an outer tube 111 , an outer end member 112 , an inner wire 113 , and an inner end member 114 .
The outer tube 111 is tubular and flexible. The outer end member 112 is cylindrical and has an inner diameter smaller than that of the outer tube 111, and is attached to one end of the outer tube 111. The inner wire 113 is flexibly bendable, and is movably inserted into the outer tube 111 and the outer end member 112. The inner end member 114 is cylindrical, and one end of the inner wire 113 is fixed to the outer circumferential surface of the cylinder.

The second throttle cable 82 includes an outer tube 116 , an outer end member 112 , an inner wire 117 , and an inner end member 114 .
The outer tube 116 is tubular and flexible. The outer end member 112 is attached to one end of the outer tube 116. The inner wire 117 is flexibly bendable and is movably inserted into the outer tube 116 and the outer end member 112. The inner end member 114 has one end of the inner wire 117 fixed to its outer circumferential surface.

An example of a method for assembling the first throttle cable 81 to the throttle drum 94 and the first cable support member 83 will now be described.
First, the first throttle cable 81 is inserted into the first support cylinder 98 of the first cable support member 83, and the outer end member 112 of the first throttle cable 81 is fixed to the end of the first support cylinder 98 by, for example, screwing. Next, the inner end member 114 attached to the inner wire 113 is fitted into the through-hole 94d on the lower side of the throttle drum 94, and further the inner wire 113 is inserted into the annular groove 94a of the throttle drum 94.
To fit the inner end member 114 of the inner wire 113 into the through hole portion 94d, first, the inner end member 114 is inserted into the hole portion 94h from the outside of the through hole portion 94d in the vehicle width direction, and then the inner wire 113 is moved into the annular groove 94a through the slit 94k.

Next, the second throttle cable 82 is inserted into the second support cylinder 103 of the second cable support member 84, and the outer end member 112 of the second throttle cable 82 is fixed to the end of the second support cylinder 103 by, for example, screw connection. Next, the inner end member 114 attached to the inner wire 117 is fitted into the upper through-hole 94e of the throttle drum 94, and further the inner wire 117 is inserted into the annular groove 94a of the throttle drum 94.
The method for fitting the inner end member 114 of the inner wire 117 into the through hole portion 94 e is similar to that for the first throttle cable 81 .

Next, the first cable support member 83 and the second cable support member 84 are fastened together to the cable support stay 71a of the intake pipe 71 with the bolts 96. This completes the assembly of the first cable support member 83 and the second cable support member 84 to the cable support stay 71a.
In this embodiment, the first throttle cable 81 and the second throttle cable 82 are supported separately by the first cable support member 83 and the second cable support member 84, respectively, thereby improving the assembly and maintenance properties described above.
The other end of each of the first throttle cable 81 and the second throttle cable 82 is connected to a throttle grip (not shown) rotatably provided at one end of the handlebar 21 (see FIG. 1).

As a result, by rotating the throttle grip from its initial position, the throttle drum 94 rotates in the second direction indicated by arrow A via the second throttle cable 82, and the throttle valve 93 gradually opens from fully closed. Also, by returning the throttle grip from its rotated state to its initial position, the throttle drum 94 rotates in a first direction opposite to the second direction via the first throttle cable 81, and the throttle valve 93 gradually closes to fully closed.

FIG. 4 is a perspective view showing the intake pipe 71.
2 and 4, the intake pipe 71 is made up of a cylinder side mounting portion 71c that is attached to the cylinder head 64, a throttle side mounting portion 71d that is attached to the throttle body 72, and an intermediate pipe portion 71e that connects the cylinder side mounting portion 71c and the throttle side mounting portion 71d. The intake pipe 71 is split into a left half 71L and a right half 71R that can be separated into left and right halves at a split surface (not shown), and is made of, for example, an aluminum alloy and formed by casting.

The cylinder side mounting portion 71c is provided with a fuel injection device mounting portion 71f to which the fuel injection device 76 is attached. The fuel injection device mounting portion 71f includes a valve insertion hole 71g into which the fuel injection valve 76a is inserted and which communicates with an intake port (not shown) of the cylinder head 64, and a mounting surface 71h to which the fixing portion 76c is attached.
The intermediate pipe portion 71e is integrally provided with a cable support stay 71a protruding laterally from an upper portion of one side (left half 71L) of the left-right split portion 71. The cable support stay 71a is integrally provided with a plate-shaped lateral extension portion 71j extending laterally from the center of the intermediate pipe portion 71e in the vehicle width direction, and an upper and lower extension portion 71k extending vertically from the lateral extension portion 71j.

The upper and lower extending portions 71k are portions to which the first cable support member 83 and the second cable support member 84 are attached.
A screw hole 71m into which a bolt 96 (see FIG. 3) is screwed is formed in the vertical center of the vertical extension 71k. A first notch 71n into which a first support tube 98 (see FIG. 3) of the first cable support member 83 is inserted is formed in the lower part of the vertical extension 71k so as to open downward. A second notch 71p is formed in the upper part of the vertical extension 71k so as to open upward as a stay-side notch into which a second support tube 103 (see FIG. 3) of the second cable support member 84 is inserted. The second notch 71p is disposed above the first notch 71n, and the screw hole 71m is disposed at a position offset inward in the vehicle width direction with respect to the first notch 71n and the second notch 71p (see also FIG. 6).

Figure 5 is a front view showing the throttle cable support structure. Figure 6 is a view showing the details of the throttle cable support structure, showing the state in which the second cable support member 84 has been removed from the state in Figure 5, and the state in which the first cable support member 83 and the second cable support member 84 have been removed from the state in Figure 5. Figure 7 is a left side view showing the throttle cable support structure, and Figure 8 is a plan view showing the throttle cable support structure.

As shown in FIG. 5, the lower part of the first plate 97 of the first cable support member 83 extends from the bolt 96 side at an incline obliquely downward and outward. The first support tube 98 consists of a straight tube portion 98a that is fitted and fixed in a through hole 97a formed in the first plate 97, and a curved tube portion 98b that curves and extends forward from the straight tube portion 98a. The curved tube portion 98b extends obliquely downward and outward from the straight tube portion 98a when viewed from the front.

A line 121 passing through the center 71q of the screw hole 71m of the cable support stay 71a and the center 97b of the through hole 97a of the first plate 97 is inclined at an angle θ1 with respect to the vertical line 120. In addition, the curved cylindrical portion 98b (more specifically, the center line 98c of the curved cylindrical portion 98b) is inclined at an angle θ2 with respect to the vertical line 120. The angles θ1 and θ2 are acute angles, and the angle θ2 is greater than the angle θ1 (θ2>θ1).

The second plate 102 of the second cable support member 84 has an elliptical contour, a through hole 102a at one end and a bolt insertion hole 102c at the other end through which the bolt 96 is passed, and extends obliquely upward and outward from the bolt 96 side. The second support tube 103 consists of a straight tube portion 103a that is fitted and fixed in the through hole 102a formed in the second plate 102, and a curved tube portion 103b that curves and extends forward from the straight tube portion 103a. The curved tube portion 103b extends obliquely downward and outward from the straight tube portion 103a when viewed from the front.

A line 122 passing through the center 71q of the screw hole 71m of the cable support stay 71a and the center 102b of the through hole 102a of the second plate 102 is inclined at an angle θ3 with respect to the vertical line 120. In addition, the curved cylindrical portion 103b (more specifically, the center line 103c of the curved cylindrical portion 103b) is inclined at an angle θ4 with respect to the vertical line 120. The angles θ3 and θ4 are acute angles, and the angles θ1 and θ3 are equal or approximately equal (θ1 = θ3 or θ1 ≒ θ3).

As shown in Figure 6, in state diagram B which shows the state in which the second cable support member 84 has been removed from the state in Figure 5, the first plate 97 of the first cable support member 83 consists of an upper plate portion 97c, a lower plate portion 97d, and a bent plate portion 97e.
The plate upper portion 97c extends obliquely upward and outward from the bolt 96 side, and has a plate notch 97f at its upper end as a notch formed along the shape of the second notch 71p of the cable support stay 71a. The plate notch 97f is a portion with which the straight cylinder portion 98a of the first support cylinder 98 (see FIG. 5) engages together with the second notch 71p.
The plate lower portion 97d extends obliquely downward and outward from the bolt 96 side, and has a through hole 97a. The plate bent portion 97e is bent at the position of the bolt 96, and has a bolt insertion hole 97g through which the bolt 96 is inserted.

In state diagram C, which shows the state in which the first cable support member 83 and the second cable support member 84 have been removed from the state shown in FIG. 5, the throttle drum 94 is disposed behind the vertical extension portion 71k, and the first cutout portion 71n and the second cutout portion 71p overlap the throttle drum 94 in the front-to-rear direction.

The first notch 71n and the second notch 71p are positioned offset outward in the vehicle width direction from the bolt 96. As a result, in FIG. 5, the straight tube portion 98a of the first support tube 98 and the straight tube portion 103a of the second support tube 103 are offset outward in the vehicle width direction from the bolt 96, ensuring a sufficient distance between the head 96a of the bolt 96 and the straight tube portions 98a, 103a. This allows the first cable support member 83 and the second cable support member 84 to be attached without interference between the tool and the straight tube portions 98a, 103a when tightening or loosening the bolt 96 with a tool.

In state diagram C, the upper and lower extending portions 71k of the cable support stay 71a are formed with recesses 71r on their outer sides that are recessed toward the center in the vehicle width direction.
In this way, by providing a recess 71r in the cable support stay 71a, the upper and lower extension portions 71k and the bolt 96 can be positioned more toward the center in the vehicle width direction, thereby making the cable support stay 71a lighter and concentrating the mass toward the center of the vehicle body.

As shown in FIG. 7, the cable support stay 71a has a front surface 71s against which the first plate 97 of the first cable support member 83, more specifically, the plate back surface 97h of the first plate 97, is abutted and fastened to a fastening surface 71x.
The second plate 102 of the second cable support member 84 is fastened to the first plate 97 with a plate back surface 102d abutting against a plate front surface 97j, which serves as a side surface of the first plate 97.

The straight tube portion 98a of the first support tube 98 and the straight tube portion 103a of the second support tube 103 are arranged in parallel and protrude rearward beyond the back surface 71t of the upper and lower extensions 71k. As a result, the straight tube portions 98a, 103a engage with the first notch portion 71n and the second notch portion 71p of the upper and lower extensions 71k, respectively, so that the first cable support member 83 and the second cable support member 84 are prevented from rotating even though they are fastened with a single bolt 96.

In a side view, the length of the bolt 96, more specifically, the bolt upper portion 124 that protrudes upward from the shaft portion 96b of the bolt 96 on the second plate 102, is defined as L. Of the length L, the length L1 of the overlapping portion 125 where the second plate 102 overlaps with the first plate 97 is longer than the length L2 of the non-overlapping portion 126 where the second plate 102 does not overlap with the first plate 97 (L1>L2).

In this way, by making the length L1 of the overlapping portion 125 longer than the length L2 of the non-overlapping portion 126, it is possible to suppress wobbling and bending of the non-overlapping portion 126. Furthermore, in order to suppress wobbling and bending of the non-overlapping portion 126, it is not necessary to bend at least one of the first plate 97 and the second plate 102, to partially thicken it, or to give the cable support stay 71a a stepped shape, which prevents an increase in costs.

As shown in FIG. 8, a throttle valve shaft 92 of the throttle body 72 extends in the vehicle width direction, and a throttle drum 94 is attached to a portion of the throttle valve shaft 92 that protrudes laterally from the tube portion 91 .
The fastening surface 71x of the cable support stay 71a extends in the left-right and up-down directions of the vehicle, and extends along the throttle valve shaft 92 (or the axis 92a of the throttle valve shaft 92). More specifically, the fastening surface 71x extends parallel or approximately parallel to the throttle valve shaft 92 (or the axis 92a of the throttle valve shaft 92).

This allows the first cable support member 83 and the second cable support member 84 to be attached appropriately to the direction in which the first throttle cable 81 and the second throttle cable 82 extend. Therefore, the inner wires 113, 117 (see FIG. 7 for the inner wire 117) of the first throttle cable 81 and the second throttle cable 82 can be easily hung along the annular groove 94a of the throttle drum 94. As a result, the movement of the inner wires 113, 117 becomes smoother, improving the operability of the throttle grip.

As shown in Figures 2 to 4 above, in the throttle cable support structure for motorcycle 10 as a vehicle having an intake device 67 of engine 23, intake pipe 71 connected to cylinder portion 62, throttle body 72 connected to intake pipe 71, and cable support stay 71a supporting throttle cables (first throttle cable 81, second throttle cable 82) connected to throttle body 72, cable support stay 71a is configured as an integral structure with intake pipe 71 by fastening cable support members (first cable support member 83, second cable support member 84) having support cylinders (first support cylinder 98, second support cylinder 103) through which the throttle cables (first throttle cable 81, second throttle cable 82) are inserted.
According to this configuration, the cable support stay 71a can be made smaller and the number of parts can be reduced.

3 and 7, the throttle body 72 is provided with a throttle drum 94 which rotates to open and close a throttle valve 93, and the throttle cable is made up of a first throttle cable 81 which rotates the throttle drum 94 in a first direction and a second throttle cable 82 which rotates the throttle drum 94 in a second direction opposite to the first direction. The support cylinders (first support cylinder 98, second support cylinder 103) are made up of a first support cylinder 98 which passes through and supports the first throttle cable 81, and a second support cylinder 103 which passes through and supports the second throttle cable 82. A first plate 97 which supports the first support cylinder 98 and a second plate 102 which supports the second support cylinder 103 are fastened together to the cable support stay 71a by a bolt 96.
According to this configuration, the fastening structure of the first plate 97 and the second plate 102 to the cable support stay 71a can be simplified.

7, the first plate 97 is disposed on a fastening surface 71x to which the bolt 96 of the cable support stay 71a is fastened, and the second plate 102 is disposed on a plate front surface 97j opposite the fastening surface 71x side of the first plate 97. In a side view, of the length L from the shaft portion 96b of the bolt 96 of the second plate 102 to the end portion on the second support cylinder 103 side, a length L1 where the first plate 97 and the second plate 102 overlap is longer than a length L2 where the first plate 97 and the second plate 102 do not overlap.
This configuration can suppress rattling and bending of the second plate 102. In addition, it is not necessary to bend or thicken one of the first plate 97 and the second plate 102, or to form the cable support stay 71a in a stepped shape, which can reduce costs.

Also, as shown in Figures 5 and 6, the cable support stay 71a has a second notch portion 71p that engages with the second support cylinder 103, and the first plate 97 has a plate notch portion 97f at a position corresponding to the second notch portion 71p when the first plate 97 is attached to the cable support stay 71a with the bolt 96.
With this configuration, the second support tube 103 can be passed through the second cutout portion 71p and the plate cutout portion 97f of the first plate 97, and the second support tube 103 can be easily positioned relative to the cable support stay 71a and the first plate 97 while the second plate 102 is attached to the cable support stay 71a.

As shown in FIGS. 4 and 8, the intake pipe 71 is formed by casting, and the fastening surface 71 x of the cable support stay 71 a extends along the throttle valve shaft 92 that supports the throttle valve 93 .
According to this configuration, the first plate 97 and the second plate 102 can be attached appropriately with respect to the orientations of the first throttle cable 81 and the second throttle cable 82 .

As shown in FIG. 5 , the straight tube portion 98a serving as the attachment portion of the first support tube 98 to the first plate 97 and the straight tube portion 103a serving as the attachment portion of the second support tube 103 to the second plate 102 are arranged spaced apart in the vertical direction and offset outward in the vehicle width direction relative to the bolt 96.
With this configuration, the distance between the head 96a of the bolt 96 and each straight cylindrical portion 98a, 103a can be secured, and when the bolt 96 is tightened or loosened with a tool, the first plate 97 and the second plate 102 can be attached without interference between the tool and each straight cylindrical portion 98a, 103a.

Second Embodiment
FIG. 9 is a perspective view showing an intake device 131 of the second embodiment.
An intake system 131 of this embodiment differs from the intake system 67 of the embodiment shown in Fig. 2 only in a throttle body cover 133. That is, the intake system 131 includes an intake pipe 71, a throttle body 72, a connecting tube 73 (see Fig. 2), an air cleaner 74 (see Fig. 2), and the throttle body cover 133.
The throttle body cover 133 covers the sides, above, and below of the throttle body 72, the first cable support member 83, and the second cable support member 84. In addition, the throttle body cover 133 covers the tip end of the cable support stay 71a, the tips of the first throttle cable 81 and the second throttle cable 82, and the throttle drum 94.

The throttle body cover 133 has an upper portion attached to the upper portion of the throttle body 72 with screws 87, and has a pair of openings 133a, 133b arranged vertically at the front. The first support tube 98 of the first cable support member 83 protrudes forward from opening 133a, and the second support tube 103 protrudes forward from opening 133b. In addition, the bolt 96 is covered from the front by a part of the throttle body cover 133.

FIG. 10 is a cross-sectional view taken along line XX of FIG.
As shown in FIGS. 9 and 10, the throttle body cover 133 is integrally provided with a side wall portion 133c, an upper wall portion 133d, a front wall portion 133e, and a rear wall portion 133f.
The side wall portion 133c is located on the outer side in the vehicle width direction of the cable support stay 71a and the throttle drum 94. The upper wall portion 133d, the front wall portion 133e and the rear wall portion 133f bend from the upper edge, the front edge and the rear edge of the side wall portion 133c, respectively, and extend inward in the vehicle width direction.

The side wall portion 133c covers the upper and lower extension portion 71k and its surroundings, the inner wires 113, 117, and the throttle drum 94 from the sides. The upper wall portion 133d is attached to the throttle body 72 with screws 87, and covers the upper and lower extension portion 71k and its surroundings, the inner wires 113, 117, and the throttle drum 94 from above. The front wall portion 133e covers the bolt 96 from the front. In other words, the front wall portion 133e covers at least a portion of the axially forward side of the bolt 96. The rear wall portion 133f covers the throttle drum 94 from the rear.

As described above, the throttle body cover 133 protects the moving parts of the intake system 131 and the bolts 96 .
The bolt 96 is a component that is tightened or loosened by applying a tool to the head 96a during maintenance of the first throttle cable 81 and the second throttle cable 82, and the front wall portion 133e prevents flying stones and the like from hitting the head 96a.

As shown in FIGS. 9 and 10, the throttle body cover 133 that covers the throttle body 72 from the side covers the bolt 96, more specifically, at least a portion of the axial front side of the head 96a.
According to this configuration, the throttle body cover 133 improves the protective performance of the bolt 96, and even if the bolt 96 loosens, the bolt 96 can be prevented from loosening by hitting the throttle body cover 133 (more specifically, the front wall 133e).

Third Embodiment
FIG. 11 is a perspective view showing an intake device 140 of the third embodiment, FIG. 12 is a front view showing an intake pipe 141, and FIG.
In the third embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.
As shown in FIG. 11, the intake system 140 includes an intake pipe 141 connected to the cylinder head 64 (see FIG. 2), and a throttle body 72 (see FIG. 2) connected to the rear end of the intake pipe 141.
A fuel injection device 143 that injects fuel into the intake pipe 141 is attached to the front portion of the intake pipe 141. The fuel injection device 143 includes a fuel injection valve 143a, a connector portion 143b to which a wire harness (not shown) that supplies electricity to the fuel injection valve 143a is connected, and a fixing portion 143c that fixes the fuel injection device 143 to the intake pipe 141. The fixing portion 143c is attached to the intake pipe 141 with a plurality of bolts 145.

As shown in FIGS. 11 to 13, the intake pipe 141 has a cylinder side mounting portion 141a at its front end which is attached to the cylinder head 64, and a throttle side mounting portion 141b at its rear end to which the throttle body 72 is attached.
The intake pipe 141 is provided with a cable support stay 141d at a position close to the throttle side mounting part 141b on a front surface 141c that is inclined downward toward the front, and a fuel injection device mounting part 141e at a position close to the cylinder side mounting part 141a on the front surface 141c.

The cable support stay 141d includes an upper protruding portion 141f that protrudes upward integrally from the front surface 141c, and a forward protruding portion 141g that protrudes forward integrally from the upper protruding portion 141f.
The upper protrusion 141f has a top surface 141h formed with a plurality of screw holes 141j for mounting accessories, etc., and protrudes laterally beyond a side surface 141k on one side (left side) of the intake pipe 141. The forward protrusion 141g has a lateral protrusion 141m that protrudes further laterally than the upper protrusion 141f. A first notch 141p that opens downward is formed in a lower edge 141n of the lateral protrusion 141m, and a second notch 141r that opens upward is formed in an upper edge 141q of the lateral protrusion 141m.

The forward protruding portion 141g has a front surface 141s having a plurality of screw holes 141t formed therein at intervals in the vertical direction.
The cable support stay 141d is integrally provided with a side wall portion 141u that protrudes forward from the upper protrusion portion 141f and extends inward from the forward protrusion portion 141g. The side wall portion 141u, a front surface 141v of the upper protrusion portion 141f located below the side wall portion 141u, and a front surface 141c of the intake pipe 141 that slopes downward form an intake pipe side positioning portion 141w that opens forward.

The fuel injection device mounting portion 141e includes a valve insertion hole 141x into which the fuel injection valve 143a is inserted and which communicates with an intake port (not shown) of the cylinder head 64, and a mounting surface 141y to which the fixing portion 143c is attached. A screw hole 141z into which a bolt 145 is screwed is formed in the mounting surface 141y.
The cable support stay 141d is disposed on one side (left side) and upper part of the intake pipe 141, and the fuel injection device mounting portion 141e is disposed on the other side (right side) and lower part of the intake pipe 141.
By arranging the cable support stay 141d and the fuel injection device mounting portion 141e in this manner, a distance can be secured between the first cable support member 147 and the second cable support member 148, which will be described in detail later, and the fuel injection device 143.

A first cable support member 147 that supports the first throttle cable 81 (see FIG. 2) and a second cable support member 148 that supports the second throttle cable 82 (see FIG. 2) are attached to the front surface 141s of the forward protrusion 141g of the cable support stay 141d with multiple bolts 149. In this way, by using multiple bolts 149, the first cable support member 147 and the second cable support member 148 can be firmly attached, improving reliability.

The first cable support member 147 is composed of a plate-shaped first plate 151 fastened to the front surface 141s of the forward protrusion 141g by a plurality of bolts 149, and a cylindrical, curved first support tube 152 attached to the first plate 151 by welding or brazing.
The second cable support member 148 is composed of a plate-shaped second plate 154 fastened to the forward protrusion 141g together with the first plate 151 by a plurality of bolts 149, and a cylindrical, bent second support tube 155 attached to the second plate 154 by welding or brazing.
That is, the first cable support member 147 and the second cable support member 148 are fastened together to the cable support stay 141 d by a plurality of bolts 149 .

The first plate 151 of the first cable support member 147 has a through hole 151a through which the first support tube 152 passes, bolt insertion holes (not shown) through which multiple bolts 149 are passed, and a plate side positioning portion 151c that is bent rearward and inserted into the intake pipe side positioning portion 141w.
The plate-side positioning portion 151c is formed in a claw shape and includes an inner extension portion 151e extending inward from an inner end portion 151d of the first plate 151 and a rearward bent portion 151f bent rearward from the end portion of the inner extension portion 151e. The plate-side positioning portion 151c corresponds to an example of a support member-side positioning portion.
The first support cylinder 152 comprises a straight cylinder portion 152a fitted into and fixed in the through hole 151a of the first plate 151, and a curved cylinder portion 152b curved and extending forward from the straight cylinder portion 152a, into which the first throttle cable 81 is inserted and fixed. The straight cylinder portion 152a is inserted into a first cutout portion 141p of the cable support stay 141d.

The second plate 154 of the second cable support member 148 has a through hole 154a through which the second support tube 155 passes, bolt insertion holes (not shown) through which multiple bolts 149 are passed, and a plate side positioning portion 154c that is bent rearward and inserted into the intake pipe side positioning portion 141w.
The plate side positioning portion 154c includes an inner side extending portion 154e extending inward from an inner end portion 154d of the second plate 154, and a rearward bent portion 154f bent rearward from an end portion of the inner side extending portion 152e. The plate side positioning portion 154c corresponds to an example of a support member side positioning portion.
The second support cylinder 155 is composed of a straight cylinder portion 155a fitted into and fixed in the through hole 154a of the second plate 154, and a curved cylinder portion 155b curved and extending forward from the straight cylinder portion 155a, and is inserted and fixed to the second throttle cable 82. The straight cylinder portion 155a is inserted into the second cutout portion 141r of the cable support stay 141d.

Next, a method for assembling the first cable support member 147 and the second cable support member 148 to the cable support stay 141d will be described.
First, the rear part of the straight tube part 152a of the first support tube 152 of the first cable support member 147 is inserted into the first notch part 141p, and the plate side positioning part 151c of the first plate 151 is inserted into the intake pipe side positioning part 141w. In this state, the first cable support member 147 is temporarily supported at two points, the first notch part 141p and the intake pipe side positioning part 141w, so that the first cable support member 147 is unlikely to fall even if the first cable support member 147 is released from the hand.
In this state, the rear portion of the straight tube portion 155a of the second support tube 155 of the second cable support member 148 is inserted into the second notch portion 141r, and the plate side positioning portion 154c of the second plate 154 is inserted into the intake pipe side positioning portion 141w. In this state, the second cable support member 148 is temporarily supported at two points, the second notch portion 141r and the intake pipe side positioning portion 141w, so that the second cable support member 148 is unlikely to fall even if the second cable support member 148 is released from the hand.

Next, the bolts 149 are passed through the bolt insertion holes of the first plate 151 and the second plate 154, and the bolts 149 are screwed into the multiple screw holes 141t of the cable support stay 141d and tightened. This completes the assembly of the first cable support member 147 and the second cable support member 148 to the cable support stay 141d.
In this embodiment, the intake pipe 141 has an intake pipe side positioning portion 141w, and the first cable support member 147 and the second cable support member 148 have plate side positioning portions 151c, 154c. This allows the first cable support member 147 and the second cable support member 148 to be easily positioned and temporarily supported when they are assembled, improving the ease of assembly.

As shown in Figures 11 to 13 above, the first plate 151 and the second plate 154 have plate side positioning portions 151c, 154c that determine their mounting positions relative to the intake pipe 141, and the intake pipe 141 has an intake pipe side positioning portion 141w at a position corresponding to the plate side positioning portions 151c, 154c.
According to this configuration, by providing the plate side positioning portions 151c, 154c and the intake pipe side positioning portion 141w, the first plate 151 and the second plate 154 can be quickly positioned at positions suitable for fastening when assembling the first plate 151 and the second plate 154 to the intake pipe 141, improving the efficiency of the assembly work. In addition, the plate side positioning portions 151c, 154c and the intake pipe side positioning portion 141w can prevent the first plate 151 and the second plate 154 from shifting or coming off from the intake pipe 141 during the assembly work.

Further, the plate side positioning portions 151c, 154c are configured in a claw shape having a bent portion, and the intake pipe side positioning portion 141w is configured in a recess with which the claw shape engages.
This configuration improves assembly workability with a simple structure.

The above-described embodiment merely shows one aspect of the present invention, and any modification and application can be made without departing from the spirit and scope of the present invention.
For example, in the above embodiment, the first throttle cable 81 and the second throttle cable 82 are supported separately by the first cable support member 83 and the second cable support member 84, respectively, but this is not limited to the above. The first throttle cable 81 and the second throttle cable 82 may be attached to the cable support stay 71a by a single cable support member. This can reduce the number of parts and improve ease of assembly.

In addition, the first plate 97 and the second plate 102 have different lengths from the shaft portion 96b of the bolt 96 to each upper end when viewed from the side, but this is not limited to the above, and the lengths from the shaft portion 96b of the bolt 96 to each upper end when viewed from the side may be the same.
In addition, the fastening surface 71x of the cable support stay 71a extends in the vehicle width direction and the up-down direction (vertical direction), but is not limited to this. The fastening surface 71x may be inclined with respect to the vertical plane so as to rise or fall forward while being maintained along the throttle valve shaft 92 (i.e., parallel or approximately parallel to the throttle valve shaft 92).
In the above embodiment, the throttle valve 93 is opened when the throttle drum 94 rotates in the second direction indicated by the arrow A, and closed when the throttle drum 94 rotates in the first direction, but the present invention is not limited to this. For example, the throttle valve 93 may be closed when the throttle drum 94 rotates in the second direction indicated by the arrow A, and opened when the throttle drum 94 rotates in the first direction. In this case, the first throttle cable 81 serves as an opening throttle cable, and the second throttle cable 82 serves as a closing throttle cable.

The present invention is not limited to application to motorcycles 10, but can also be applied to saddle-type vehicles, four-wheeled vehicles, and industrial vehicles, including vehicles other than motorcycles 10.

10. Motorcycles (vehicles)
67, 140 Intake device 71, 141 Intake pipe 71a, 141d Cable support stay 71p, 141r Second cutout portion (stay side cutout portion)
71x, 141s Fastening surface 72 Throttle body 81 First throttle cable 82 Second throttle cable 83 First cable support member 84 Second cable support member 92 Throttle valve shaft 93 Throttle valve 94 Throttle drum 96, 149 Bolt (fastening member)
97, 151 First plate (first support member)
97f Plate notch (notch)
97j Plate front (side)
98, 152 First support tube 98a, 103a, 152a, 155a Straight tube portion (mounting portion)
102, 154 Second plate (second support member)
103, 155 Second support cylinder 133 Throttle body cover 141w Intake pipe side positioning portion 151c, 154c Plate side positioning portion (support member side positioning portion)

Claims (8)

A throttle cable support structure for a vehicle includes an intake system (67) for an engine (23), an intake pipe (71) connected to a cylinder portion (62), a throttle body (72) connected to the intake pipe (71), and a cable support stay (71a) supporting a throttle cable (81, 82) connected to the throttle body (72),
the cable support stay (71a) is fastened to a cable support member (83, 84) having a support tube (98, 103) through which the throttle cable (81, 82) is inserted and supported, and is integrally formed with the intake pipe (71) ;
The throttle body (72) includes a throttle drum (94) that rotates to open and close a throttle valve (93),
The throttle cables (81, 82) include a first throttle cable (81) that rotates the throttle drum (94) in a first direction, and a second throttle cable (82) that rotates the throttle drum (94) in a second direction opposite to the first direction,
The support cylinder (98, 103) includes a first support cylinder (98) through which the first throttle cable (81) is inserted and which supports the first throttle cable (81), and a second support cylinder (103) through which the second throttle cable (82) is inserted and which supports the second throttle cable (82),
A throttle cable support structure for a vehicle, characterized in that a second support member (102) supporting the second support tube (103) and a first support member (97) supporting the first support tube (98) are fastened together to the cable support stay (71 a) by a fastening member (96) . 2. The throttle cable support structure for a vehicle as described in claim 1, wherein the first support member (97) is arranged on a fastening surface (71x) to which the fastening member (96) of the cable support stay (71a) is fastened, the second support member (102) is arranged on a side surface (97j) opposite the fastening surface (71x) of the first support member (97), and, in a side view, of a length L from a shaft portion (96b) of the fastening member (96) of the second support member (102) to an end portion on the second support tube (103) side, a length L1 over which the second support member (102) and the first support member (97) overlap is longer than a length L2 over which the second support member ( 102 ) and the first support member (97) do not overlap. 3. The throttle cable support structure for a vehicle as claimed in claim 2, characterized in that the cable support stay (71a) has a stay-side cutout portion (71p) that engages with the second support cylinder (103), and the first support member (97) has a cutout portion (97f) at a position corresponding to the stay-side cutout portion (71p) when the first support member (97) is attached to the cable support stay (71a ) with the fastening member (96). 4. The throttle cable support structure for a vehicle according to claim 2 or 3, characterized in that the intake pipe (71) is formed by casting, and the fastening surface (71x) of the cable support stay (71a) extends along a throttle valve shaft ( 92 ) supporting the throttle valve ( 93 ). 5. The throttle cable support structure for a vehicle according to claim 1, wherein an attachment portion (103a) of the second support tube (103) to the second support member (102) and an attachment portion (98a) of the first support tube ( 98 ) to the first support member (97) are arranged spaced apart in the vertical direction and offset outward in the vehicle width direction with respect to the fastening member (96). 6. A throttle cable support structure for a vehicle as claimed in any one of claims 1 to 5 , characterized in that a throttle body cover (113) covering the throttle body (72) from the side covers at least a portion of the axially forward side of the fastening member (96). A throttle cable support structure for a vehicle as described in any one of claims 1 to 6, characterized in that the first support member (151) and the second support member (154) are provided with support member side positioning portions (151c, 154c) that determine their mounting positions relative to the intake pipe (141), and the intake pipe (141) is provided with an intake pipe side positioning portion (141w) at a position corresponding to the support member side positioning portion ( 151c , 154c ) . The throttle cable support structure for a vehicle as described in claim 7, characterized in that the support member side positioning portion (151c, 154c) is configured as a claw shape having a bent portion, and the intake pipe side positioning portion ( 141w ) is configured as a recess with which the claw shape engages.

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