Saddle-type vehicle

Abstract

To provide a saddle-type vehicle that can suppress the deterioration of wiring caused by direct exposure to heat from the exhaust pipe. [Solution] The saddle-type vehicle (10) comprises a body frame (11), an engine (12) supported by the body frame (11), an exhaust pipe (25a) connected to the engine (12) and extending to the rear, an exhaust gas sensor (85) provided on the exhaust pipe (25a), and wiring (86) extending from the exhaust gas sensor (85). The body frame (11) includes an extended frame portion (34) that extends along the exhaust pipe (25a), and the body frame (11) is provided with a resin guide member (90) that extends along the extended frame portion (34) and guides the wiring (86) along the extended frame portion (34). The resin guide member (90) is provided on the opposite side of the extended frame portion (34) from the exhaust pipe (25a).

Description

Technical Field

[0001] The present invention relates to a saddle-riding type vehicle.

Background Art

[0002] Conventionally, a saddle-riding type vehicle in which an exhaust gas sensor is provided in an exhaust pipe extending from an internal combustion engine is known (see, for example, Patent Documents 1 to 3). Patent Document 1 describes a pair of bottom frame portions that pass through both sides of the lower part of an internal combustion engine and extend rearward of the vehicle body, and a pair of left and right exhaust pipes that extend along the bottom frame portions. The exhaust gas sensor is attached to the upper part of the exhaust pipe and is arranged so as to be sandwiched between the internal combustion engine and the bottom frame portion. Therefore, in Patent Document 1, the wiring of the exhaust gas sensor is routed on the exhaust pipe side rather than on the bottom frame portion side. In Patent Document 2, the vehicle body frame includes a right down tube and a left down tube that extend downward from a head pipe and then extend rearward. In Patent Document 2, a part of the exhaust pipe is arranged between the right down tube and the left down tube, and an oxygen sensor as an exhaust gas sensor is attached to the exhaust pipe. In Patent Document 2, the wiring of the oxygen sensor is routed along the left down tube. Patent Document 3 describes a so-called off-road type saddle-riding type vehicle, and discloses an exhaust pipe that extends from the front of an engine around the side of the engine and is connected to an up muffler. In Patent Document 3, the exhaust pipe passes through the inner side in the vehicle width direction of a main frame that extends obliquely downward and rearward from the head pipe, and the exhaust gas sensor is attached to the exhaust pipe located on the inner side in the vehicle width direction of the main frame at a position overlapping the main frame when viewed from the side of the vehicle body. Therefore, in Patent Document 3, it can be seen that the wiring of the exhaust gas sensor is routed on the exhaust pipe side rather than on the main frame side.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

[0004] The wiring for exhaust gas sensors, which are generally located in the exhaust pipe, can be damaged by flying debris or deteriorate due to heat from the exhaust pipe. Therefore, it is desirable to route the exhaust gas sensor wiring in a way that avoids these effects. This invention has been made in view of the above circumstances, and aims to provide a saddle-type vehicle that can suppress the deterioration of wiring due to the heat of the exhaust pipe. [Means for solving the problem]

[0005] A saddle-type vehicle comprises a body frame, an engine supported by the body frame, an exhaust pipe connected to the engine and extending rearward, an exhaust gas sensor provided in the exhaust pipe, and wiring extending from the exhaust gas sensor. The saddle-type vehicle is characterized in that the body frame includes an extended frame portion extending along the exhaust pipe, the body frame is provided with a resin guide member extending along the extended frame portion and guiding the wiring along the extended frame portion, and the resin guide member is provided on the opposite side of the exhaust pipe from the extended frame portion. [Effects of the Invention]

[0006] According to the present invention, deterioration of wiring caused by direct exposure to heat from the exhaust pipe can be suppressed. [Brief explanation of the drawing]

[0007] [Figure 1] This is a side view of a saddle-type vehicle according to an embodiment of the present invention. [Figure 2]This is a left side view showing the body frame of a saddle-type vehicle. [Figure 3] This is a perspective view showing the body frame of a saddle-type vehicle. [Figure 4] This is a left side view showing the structure around the turn signal relay box. [Figure 5] This is a perspective view from the left rear showing the structure around the pivot axis. [Figure 6] This is a perspective view showing the turn signal relay box. [Figure 7] This is a perspective view from the lower left, showing the lower frame. [Figure 8] This is a right-side view of a saddle-type vehicle. [Figure 9] This is a close-up view of the underside of a saddle-type vehicle. [Figure 10] This is a perspective view showing a resin guide member. [Figure 11] This is a perspective view from the lower left, showing the lower frame with the resin guide member attached. [Figure 12] This is a perspective view from the lower right, showing the lower frame with the resin guide member attached. [Figure 13] This is a perspective view from the lower left, showing the lower frame with the resin guide member attached, according to Embodiment 2 of the present invention. [Modes for carrying out the invention]

[0008] 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 refer to directions relative to the vehicle body unless otherwise specified. In each figure, the symbol FR indicates the front of the vehicle body, the symbol UP indicates the top of the vehicle body, and the symbol LH indicates the left side of the vehicle body.

[0009] [Embodiment] Figure 1 is a side view of a saddle-type vehicle 10 according to an embodiment of the present invention. The straddle-type vehicle 10 is a vehicle including a vehicle body frame 11, a power unit 12 supported by the vehicle body frame 11, a front fork 14 that supports the front wheel 13 in a steerable manner, a swing arm 16 that supports the rear wheel 15, and a seat 17 for the occupant. The straddle-type vehicle 10 is a vehicle in which the occupant sits straddling the seat 17. The seat 17 is provided above the rear portion of the vehicle body frame 11.

[0010] The vehicle body frame 11 includes a head pipe 18 provided at the front end portion of the vehicle body frame 11, a front frame 19 positioned behind the head pipe 18, and a rear frame 20 positioned behind the front frame 19. The front end portion of the front frame 19 is connected to the head pipe 18. The seat 17 is supported by the rear frame 20.

[0011] The front fork 14 is supported by the head pipe 18 so as to be steerable left and right. The front wheel 13 is supported by an axle 13a provided at the lower end portion of the front fork 14. A steering handle 21 gripped by the occupant is attached to the upper end portion of the front fork 14.

[0012] The swing arm 16 is supported by a pivot shaft 22 supported by the vehicle body frame 11. The pivot shaft 22 is a shaft that extends horizontally in the vehicle width direction. The pivot shaft 22 is inserted through the front end portion of the swing arm 16. The swing arm 16 swings up and down about the pivot shaft 22. The rear wheel 15 is supported by an axle 15a provided at the rear end portion of the swing arm 16.

[0013] The power unit 12 is disposed between the front wheel 13 and the rear wheel 15 and is supported by the vehicle body frame 11. The power unit 12 is an internal combustion engine. The power unit 12 includes a crankcase 23 and a cylinder portion 24 that houses a reciprocating piston. An exhaust device 25 is connected to an exhaust port of the cylinder portion 24. The output of the power unit 12 is transmitted to the rear wheels 15 by a drive force transmission member that connects the power unit 12 to the rear wheels 15.

[0014] Furthermore, the saddle-type vehicle 10 is equipped with a front fender 26 that covers the front wheel 13 from above, a rear fender 27 that covers the rear wheel 15 from above, a step 28 on which the rider places their feet, and a fuel tank 29 that stores the fuel used by the power unit 12. The front fender 26 is attached to the front fork 14. The rear fender 27 and footpeg 28 are positioned below the seat 17. The fuel tank 29 is supported by the vehicle frame 11.

[0015] The front fork 14 is provided with a pair of left and right turn signal stays (not shown). The turn signal stays extend outward in the vehicle width direction from the front fork 14. Turn signals 41 are provided at the outer ends of the turn signal stays in the vehicle width direction.

[0016] Figure 2 is a left side view showing the body frame 11 of the saddle-type vehicle 10. Figure 3 is a perspective view showing the body frame 11 of the saddle-type vehicle 10. Hereinafter, the power unit 12 will be referred to as the engine 12. In this embodiment, the front frame 19 includes a main frame 31 extending downward and rearward from the head pipe 18, a pair of left and right pivot frames 32 extending downward from the rear end of the main frame 31, a down frame 33 extending downward from a position below the front end of the main frame 31 on the head pipe 18, a pair of left and right lower frames (extended frame portions) 34 extending downward and rearward from the lower end of the down frame 33 and then extending rearward to connect to the lower end of the pivot frame 32, and a plurality of unit support portions 35 extending in the vehicle width direction. The engine 12 is supported by the unit support section 35.

[0017] The rear frame 20 comprises a pair of left and right seat frames 36 extending rearward from the upper ends of each pivot frame 32, and a pair of left and right rear subframes 37 extending rearward and upward from the midpoint of the longitudinal direction of the pivot frame 32 and connected to the midpoint of the longitudinal direction of the seat frame 36. In this embodiment, the vehicle frame 11 comprises one down frame 33 and two lower frames 34, and is a so-called semi-double cradle frame.

[0018] Figure 4 is a left side view showing the structure around the turn signal relay box 50. Figure 5 is a perspective view from the left rear showing the structure around the pivot shaft 22. Figure 6 is a perspective view showing the turn signal relay box 50. In Figures 4 and 5, the hinge cover 70 of the turn signal relay box 50 is not shown. As shown in Figures 2 and 3, a pipe-shaped pivot shaft support portion 39 is provided between a pair of left and right pivot frames 32, through which the pivot shaft 22 is inserted. The pivot shaft support portion 39 extends in the vehicle width direction. As shown in Figures 4 and 5, a resin turn signal relay box 50 is supported on the pivot shaft support portion 39. More specifically, the turn signal relay box 50 is supported and fixed in position by the pivot shaft support portion 39 and a mounting stay (not shown) provided on the vehicle body frame 11.

[0019] As shown in Figure 6, the turn signal relay box 50 consists of a box-shaped housing box 51 with an open top and a hinged cover 70 that can open and close the top surface of the housing box 51. In this embodiment, the hinged cover 70 is integrally provided on the housing box 51 so as to be openable and closable, with the upper left end of the housing box 51 as its base.

[0020] The housing box 51 consists of a housing box body 54 for housing the turn signal relay 53, a hook portion 55 extending from the upper end of the housing box body 54 along the shape of the pivot shaft support portion 39, mounting portions 58 and 59 which serve as fixing points for fixing to the vehicle frame 11, and a plurality of fixing portions 61, 62, and 63 for fixing the hinge cover 70 and the like.

[0021] As shown in Figure 5, the hook portion 55 embraces the pivot shaft support portion 39 from above and hooks onto it. As a result, the storage box 51 is supported by the pivot shaft support portion 39. The storage box body 54 is supported at an angle toward the front and downward, with the storage box 51 hooked onto the pivot shaft support 39. As shown in Figure 6, the housing box body 54 houses two turn signal relays 53. The turn signal relays 53 are arranged side by side in the left-right direction within the housing box body 54.

[0022] The mounting portions 58 and 59 include a plate-shaped lateral mounting portion 58 extending upward from the right front end of the hook portion 55, and a plate-shaped vertical mounting portion 59 extending downward rearward from the rear lower end of the storage box body portion 54. The lateral mounting portion 58 has a circular hole 58a that penetrates in the left-right direction. The vertical mounting portion 59 has a circular hole 59a that penetrates from the rear upper to the front lower. Fastening members 60 such as trim clips pass through the two circular holes 58a and 59a, respectively, and are fixed to mounting stays (not shown) provided on the vehicle frame 11.

[0023] The fixing parts 61, 62, and 63 include a front fixing part 61 provided at the upper front end of the housing box body 54, a rear fixing part 62 provided at the upper rear end of the housing box body 54, and a lateral fixing part 63 provided on the rear right side of the housing box body 54. Each fixing part 61, 62, and 63 is provided with rectangular fixing holes 61a, 62a, and 63a. Each fixing hole 61a, 62a, and 63a engages with harness fixing claws 81a, 81b, and 81c, which are provided with a return to prevent them from coming loose. Interior components 80 such as harnesses, connectors, and sensors of electrical equipment are supported by the harness fixing claws 81a, 81b, and 81c.

[0024] The hinged lid 70 includes a lid-side front fixing portion 71 and a lid-side rear fixing portion 72, corresponding to the front fixing portion 61 and the rear fixing portion 62. The lid-side front fixing portion 71 is provided with a fixing hole 71a. The lid-side rear fixing portion 72 is provided with a fixing hole 72a. The fixing holes 71a and 72a are formed so that fixing hole 61a and fixing hole 71a communicate when the hinged lid 70 is placed on the storage box 51. Similarly, fixing holes 62a and 72a are also formed so that they communicate. Therefore, when attaching the hinged lid 70 to the storage box 51, the fixing claws 81 simultaneously pass through the fixing holes 61a and 71a of the front fixing portion 61 and the lid-side front fixing portion 71. In the same way, the fixing claws 81 simultaneously pass through the fixing holes 62a and 72a of the rear fixing portion 62 and the lid-side rear fixing portion 72. Therefore, the interior components 80 can be fixed at the same time as the storage box 51 and the hinged lid 70 are fixed.

[0025] By arranging the resin turn signal relay box 50 in this manner, the dead space behind the engine 12 can be utilized without affecting the appearance of the saddle-type vehicle 10. Furthermore, it can be easily attached to the vehicle frame 11 by using resin clips such as trim clips as fastening members 60. In addition, the hinge cover 70 prevents electrical components such as the turn signal relay 53 located inside the turn signal relay box 50 from being exposed to water.

[0026] Figure 7 is a perspective view of the lower frame 34, seen from the lower left. The lower frame 34 is formed in a cylindrical shape. The lower frame 34 has a lower frame front curved section 42 that extends downward from the sides of the down frame 33, spreading out to the left and right and curving towards the rear below the engine 12, a lower frame straight section 43 that extends in a straight line from the rear end of the lower frame front curved section 42, and a lower frame rear curved section 44 that curves upward from the rear end of the lower frame straight section 43 and is connected to the pivot frame 32.

[0027] A cylindrical projection 45 is provided at the front of the straight section 43 of the lower frame, projecting inward in the vehicle width direction. Various attachments, such as cover members for covering the down frame 33 or the lower frame 34, can be attached to the projection 45.

[0028] A mounting portion 46 is provided at the rear of the straight section 43 of the lower frame, extending inward in the vehicle width direction. The mounting portion 46 is a roughly U-shaped stay when viewed from the side. A circular mounting hole 46d is formed at the bottom 46a of the mounting portion 46. In addition, a projection 46e is formed at the inner end of the mounting portion 46 in the vehicle width direction.

[0029] In this embodiment, a resin guide member 90 is supported by the protruding portion 45 and the mounting portion 46. The resin guide member 90 is provided on the opposite side of the right lower frame 34 from the exhaust pipe 25a. In other words, in this embodiment, the resin guide member 90 is provided between the left and right pair of lower frames 34.

[0030] Figure 8 is a right side view of the saddle-type vehicle 10. Figure 9 is an enlarged view of the main part showing the bottom of the saddle-type vehicle 10. An exhaust pipe 25a is connected to the front of the cylinder section 24. In a right-side view of the saddle-type vehicle 10, the exhaust pipe 25a extends forward from the cylinder section 24 and then extends downward along the down frame 33. Subsequently, the exhaust pipe 25a wraps around the underside of the engine 12 and extends rearward along the right lower frame 34 on the outside in the vehicle width direction of the right lower frame 34. A catalytic converter 25b for purifying exhaust gases is provided at the rear end of the exhaust pipe 25a. A muffler 25c extending upward and rearward is connected to the rear end of the catalytic converter 25b via the exhaust pipe. In this embodiment, the exhaust system 25 is comprised of an exhaust pipe 25a, a catalytic converter 25b, and a muffler 25c.

[0031] As shown in Figure 9, in this embodiment, the exhaust system 25 is located to the right of the down frame 33, the lower frame 34, and the rear wheel 15.

[0032] An exhaust gas sensor 85 is provided at the rear of the exhaust pipe 25a. The exhaust gas sensor 85 is installed on the inside of the exhaust pipe 25a in the vehicle width direction. In this embodiment, the exhaust gas sensor 85 is an LAF (Linear Air Fuel Ratio) sensor that outputs a current value proportional to the air-fuel ratio to the ECU (Electronic Control Unit). As a result, the combustion air-fuel ratio in the engine 12 is detected from the oxygen concentration and unburned gas concentration of the exhaust gas just before the catalytic converter 25b.

[0033] A sensor cable (wiring) 86 extends from the exhaust gas sensor 85, running inward in the vehicle width direction and passing over the upper part of the lower frame 34.

[0034] Figure 10 is a perspective view showing the resin guide member 90. Figure 11 is a perspective view from the lower left showing the lower frame 34 with the resin guide member 90 attached. Figure 12 is a perspective view from the lower right showing the lower frame 34 with the resin guide member 90 attached. The resin guide member 90 is composed of an upper holding portion 91 that curves in an arc along the upper part of the lower frame 34, and a guide portion 92 that extends rearward from the right rear end of the upper holding portion 91.

[0035] The upper clamping portion 91, due to the flexibility of the resin, clamps the lower frame 34 and supports the resin guide member 90 on the lower frame 34. A regulating hole 91a is provided in the upper holding portion 91. A protruding portion 45 extending inward in the vehicle width direction from the right lower frame 34 passes through the regulating hole 91a. The regulating hole 91a is formed by a play portion 91a1, which is a hole larger in diameter than the protruding portion 45, and a regulating portion 91a2 that engages with the protruding portion 45 to regulate the position of the resin guide member 90.

[0036] In the play portion 91a1, even when the protruding portion 45 is passed through, sufficient space is created between the protruding portion 45 and the play portion 91a1. This sufficient space makes it easy to assemble the resin guide member 90 to the lower frame 34, regardless of the orientation of the resin guide member 90 relative to the lower frame 34, and even if the protruding portion 45 has an axial length, by allowing the protruding portion 45 to pass through the play portion 91a1.

[0037] The regulating portion 91a2 is continuously formed on the play portion 91a1, making it easier to move the protruding portion 45 to the regulating portion 91a2. As a result, by inserting the protruding portion 45 from the play portion 91a1 and moving it to the regulating portion 91a2, the protruding portion 45 can be easily passed through the regulating hole 91a and fixed in place.

[0038] In this way, with the upper clamping portion 91 attached to the lower frame 34, the protruding portion 45 passes through the restricting portion 91a2 of the restricting hole 91a, thereby preventing the resin guide member 90 from rotating relative to the circumferential direction of the lower frame 34.

[0039] The guide section 92 consists of a holding section 93 for holding the sensor cable 86, a guide section 92 through which the sensor cable 86 is routed, and a fastening section 94 that is fastened to a mounting section 46 formed on the lower frame 34.

[0040] The holding portion 93 is provided with a clip member (holding portion) 93a for holding the sensor cable 86. The clip member 93a holds the sensor cable 86 on the surface of the resin guide member 90 facing the lower frame 34. The clip member 93a is a substantially cylindrical member with a hole that penetrates in the front-rear direction. The clip member 93a receives the sensor cable 86, which extends from the top of the lower frame 34, from the front and guides it to the rear.

[0041] The guide section 92 includes a wiring arrangement section 92a that extends in a groove shape for arranging wiring. The sensor cable 86 routed from the holding section 93 is housed in the wiring arrangement section 92a. In other words, the sensor cable 86 is easily covered by the lower frame 34 and the wiring arrangement section 92a. As a result, even when the sensor cable 86 is arranged on the lower frame 34, flying stones and other debris during driving are less likely to hit the sensor cable 86, and the lower frame 34 and the resin guide member 90 also function as protective members that protect the sensor cable 86.

[0042] The fastening portion 94 is composed of a bottom portion 95 extending inward in the vehicle width direction from the rear upper end of the guide portion 92, a rear wall portion 96 extending upward from the rear end of the bottom portion 95, and a side wall portion 97 extending upward from the left end of the bottom portion 95.

[0043] A fitting hole 94a is formed at the connection between the bottom portion 95 and the side wall portion 97. The fitting hole 94a engages with the projection 46e of the mounting portion 46. This fitting structure restricts the movement of the resin guide member 90 in the circumferential and extending directions of the lower frame 34.

[0044] The bottom portion 95 is provided with a fastening hole 94b, which is a round hole that penetrates vertically. After the fitting hole 94a and the projection 46e are fitted together, a fastening member 99 is positioned in the fastening hole 94b so as to penetrate both the fastening hole 94b and the mounting hole 46d simultaneously. In this way, in addition to the fitting of the fitting hole 94a and the projection 46e, the resin guide member 90 is fixed to the fastening hole 94b and the mounting hole 46d via the fastening member 99. This allows the resin guide member 90 to be fixed to the lower frame 34 without displacement.

[0045] When the mounting portion 46 and the fastening portion 94 are fixed together, the bottom portion 46a of the mounting portion 46 is supported by the rear upper end of the guide portion 92. As a result, the bottom portion 46a of the mounting portion 46 functions as a cover over the rear of the wiring arrangement portion 92a. That is, the bottom portion 46a of the mounting portion 46 covers the top of the sensor cable 86, preventing the sensor cable 86 from coming off the wiring arrangement portion 92a.

[0046] In this way, the clip member 93a restricts the movement of the sensor cable 86 at the front of the wiring arrangement section 92a, and the bottom portion 46a of the mounting portion 46 restricts the movement of the sensor cable 86 at the rear of the wiring arrangement section 92a, making it difficult for the sensor cable 86 to come out of the recess in the wiring arrangement section 92a when the saddle-type vehicle 10 is in motion.

[0047] As described above, the sensor cable 86 is supported along the lower frame 34 by the resin guide member 90. This results in the exhaust pipe 25a and the sensor cable 86 being positioned on either side of the lower frame 34. Therefore, deterioration of the sensor cable 86 due to direct heat from the exhaust pipe 25a can be suppressed.

[0048] As shown in Figure 2, in this embodiment, the lower end of the resin guide member 90 is located below the lower end of the lower frame 34. When the saddle-type vehicle 10 is driven and banked deeply, the resin guide member 90 makes contact with the ground before the lower frame 34. Therefore, the resin guide member 90 acts as a bank sensor, which helps to suppress damage to the lower frame 34.

[0049] As described above, according to Embodiment 1 to which the present invention is applied, the saddle-type vehicle 10 comprises a vehicle frame 11, an engine 12 supported by the vehicle frame 11, an exhaust pipe 25a connected to the engine 12 and extending to the rear, an exhaust gas sensor 85 provided on the exhaust pipe 25a, and a sensor cable 86 extending from the exhaust gas sensor 85. In this saddle-type vehicle 10, the vehicle frame 11 includes a lower frame 34 corresponding to an extended frame portion extending along the exhaust pipe 25a, and the vehicle frame 11 is provided with a resin guide member 90 that extends along the lower frame 34 and guides the sensor cable 86 along the lower frame 34, and the resin guide member 90 is provided on the opposite side of the lower frame 34 from the exhaust pipe 25a. With this configuration, the exhaust pipe 25a and the resin guide member 90 are positioned on either side of the lower frame 34, making it easier to route the sensor cable 86 of the exhaust gas sensor 85 without it being directly adjacent to the exhaust pipe 25a. Therefore, deterioration of the sensor cable 86 due to direct exposure to the heat of the exhaust pipe 25a can be suppressed.

[0050] In this embodiment, the lower frame 34 is formed in a pipe shape, and the lower frame 34 is provided with a projection 45 that restricts the circumferential movement of the resin guide member 90 and a mounting portion 46 for attaching the resin guide member 90, on the side of the lower frame 34 that is sandwiched with respect to the exhaust pipe 25a. With this configuration, the protruding portion 45 and the mounting portion 46 can restrict the position of the resin guide member 90 while preventing rotation, making it easier to securely support the sensor cable 86 without misalignment.

[0051] In this embodiment, the vehicle frame 11 includes a down frame 33 extending downward from the head pipe 18 and a lower frame 34 extending rearward from the lower end of the down frame 33, with the lower frame 34 corresponding to the extended frame portion. With this configuration, when the exhaust pipe 25a extends along the lower frame 34, which is an extended frame section, the sensor cable 86 can be guided along the lower frame 34 while being protected (damaged) from flying stones and other debris during driving.

[0052] Furthermore, in this embodiment, the resin guide member 90 extends below the lower end of the lower frame 34. With this configuration, when the vehicle is banked, the resin guide member 90 is more likely to make contact with the ground before the lower frame 34. Therefore, the resin guide member 90 also functions as a bank sensor that indicates the limit of the bank angle, thereby suppressing damage to the lower frame 34.

[0053] Furthermore, in this embodiment, the resin guide member 90 includes an upper holding portion 91 that embraces the lower frame 34 from above. This configuration allows the resin guide member 90 to be attached to the lower frame 34 more securely.

[0054] In this embodiment, the resin guide member 90 is provided with a fitting hole 94a, and the mounting portion 46 is provided with a projection 46e that fits into the fitting hole 94a. With this configuration, the fitting structure can restrict the movement of the resin guide member 90 in the circumferential and extending directions of the lower frame 34.

[0055] In this embodiment, the resin guide member 90 is provided with a clip member 93a on the lower frame 34 side for holding the sensor cable 86. With this configuration, the sensor cable 86 can be held more securely on the surface of the resin guide member 90 facing the lower frame 34 without coming off the resin guide member 90.

[0056] Furthermore, in this embodiment, the resin guide member 90 is provided with a regulating hole 91a into which the protruding portion 45 is inserted. With this configuration, the resin guide member 90 can be restricted from moving in the circumferential direction of the lower frame 34 by simply inserting the protruding portion 45 into the restricting hole 91a, thus ensuring secure attachment.

[0057] [Embodiment 2] Embodiment 2, to which the present invention is applied, will now be described. In this Embodiment 2, parts configured in the same way as in Embodiment 1 are denoted by the same reference numerals and their description is omitted.

[0058] Figure 13 is a perspective view from the lower left showing the lower frame 34 with the resin guide member 190 attached in Embodiment 2 of the present invention. This embodiment differs from Embodiment 1 in that the resin guide member 190 includes a lower holding portion 198. More specifically, the resin guide member 190 includes an upper holding portion 91 that curves along the upper part of the lower frame 34, a guide portion 92 that extends rearward from the rear end of the upper holding portion 91, and a lower holding portion 198 that curves along the lower part of the lower frame 34. The upper holding portion 91 and the lower holding portion 198 are provided with a front-to-back difference in the direction in which the lower frame 34 extends. This allows the resin guide member 190 to be more firmly fixed to the lower frame 34 by utilizing the flexibility of the resin in the upper gripping portion 91 and the lower gripping portion 198.

[0059] As described above, in Embodiment 2 to which the present invention is applied, a resin guide member 190 is provided to guide the sensor cable 86 along the lower frame 34, similar to Embodiment 1, and the resin guide member 190 is provided on the opposite side of the lower frame 34 from the exhaust pipe 25a. Therefore, in this embodiment as well, deterioration of the sensor cable 86 due to direct exposure to the heat of the exhaust pipe 25a can be suppressed.

[0060] In particular, in this embodiment, the resin guide member 190 includes a lower holding portion 198 that holds the lower frame 34 from below. With this configuration, the lower frame 34 can be clamped and fixed by the upper clamping portion 91 and the lower clamping portion 198, making it easier to temporarily fasten the resin guide member 190 to the lower frame 34 before fastening, and allowing the resin guide member 190 to be attached to the vehicle body frame 11 more securely.

[0061] Furthermore, in this embodiment, the upper gripping portion 91 and the lower gripping portion 198 have a front-to-back difference with respect to the vehicle's front-to-back direction. With this configuration, because there is a difference in front and back positions, it is easy to separate the holding positions in the longitudinal direction, making it easier to temporarily fasten the resin guide member 190 to the lower frame 34 before fastening, and allowing the resin guide member 90 to be attached to the lower frame 34 more securely.

[0062] [Other embodiments] The embodiments described above represent only one aspect of the present invention and can be modified and applied as needed without departing from the spirit of the invention.

[0063] In the embodiment described above, an example was explained in which an LAF sensor was used as the exhaust gas sensor 85. However, the exhaust gas sensor 85 is not limited to an LAF sensor. For example, an oxygen sensor used to distinguish between a lean region (lean burn) where there is an excess of air relative to the fuel and a rich region (rich burn) where there is a shortage of air relative to the fuel, based on the stoichiometric air-fuel ratio, which is the air-fuel ratio with the best combustion efficiency, may also be used.

[0064] In the above-described embodiment, a configuration in which the resin guide member 90 is provided on the lower frame 34 was explained, but the invention is not limited to this. For example, in the case of an up-swept muffler, if the exhaust pipe extends along the rear frame 20, the resin guide member 90 may be provided on the rear frame 20 or the like.

[0065] In the above-described embodiment, the resin guide member 90 is shown to be supported on the vehicle frame 11 by a protruding portion 45 and a mounting portion 46. However, for example, the protruding portion 45 may be omitted, and the resin guide member 90 may be supported on the lower frame 34 while preventing rotation by press-fitting of the upper holding portion 91 and support by the mounting portion 46. In other words, the protruding portion 45 and the mounting portion 46 may be omitted as appropriate.

[0066] In the embodiment described above, the lower frame 34 was cylindrical, but it is not limited to this and may be rectangular.

[0067] In the embodiment described above, the vehicle frame 11 was a so-called semi-cradle frame, with a pair of lower frames 34 provided on the left and right sides. However, the vehicle frame 11 is not limited to a semi-double cradle frame, and may also be a so-called double cradle frame, consisting of two down frames and two lower frames. Furthermore, it is not limited to cradle frames such as semi-cradle frames or double cradle frames. In other words, the shape of the vehicle frame is not particularly limited, and if a frame extension portion extending along the exhaust pipe can be envisioned, the resin guide member of the present invention can be provided on that frame extension portion.

[0068] [Configurations supported by the above embodiment] The above embodiment supports the following configuration.

[0069] (Configuration 1) A saddle-type vehicle comprising a vehicle frame, an engine supported by the vehicle frame, an exhaust pipe connected to the engine and extending to the rear, an exhaust gas sensor provided in the exhaust pipe, and wiring extending from the exhaust gas sensor, wherein the vehicle frame includes an extended frame portion extending along the exhaust pipe, the vehicle frame is provided with a resin guide member extending along the extended frame portion and guiding the wiring along the extended frame portion, and the resin guide member is provided on the opposite side of the exhaust pipe from the extended frame portion. With this configuration, the exhaust pipe and the resin guide member are positioned on either side of the extended frame, making it easier to route the exhaust gas sensor wiring without it being directly adjacent to the exhaust pipe. Therefore, deterioration of the wiring due to direct exposure to the heat of the exhaust pipe can be suppressed.

[0070] (Configuration 2) The saddle-type vehicle according to Configuration 1, characterized in that the extended frame portion is formed in the shape of a pipe, and the extended frame portion is provided on the side opposite to the exhaust pipe with respect to the extended frame portion, with respect to the extension frame portion, a projection portion that restricts the circumferential movement of the resin guide member and a mounting portion for attaching the resin guide member. With this configuration, the protruding part and the mounting part can be used to prevent rotation while regulating the position of the resin guide member, making it easier to securely support the wiring without misalignment.

[0071] (Configuration 3) The saddle-type vehicle according to Configuration 2, characterized in that the vehicle body frame comprises a down frame extending downward from the head pipe and a lower frame extending rearward from the lower end of the down frame, and the extended frame portion is the lower frame. With this configuration, when the exhaust pipe extends along the lower frame, the wiring can be guided along the lower frame while being protected (damaged) from flying stones and other debris during driving.

[0072] (Configuration 4) The saddle-type vehicle according to Configuration 3, characterized in that the resin guide member extends below the lower end of the lower frame. With this configuration, when the vehicle is banked, the resin guide member is more likely to make contact with the ground before the lower frame. Therefore, the resin guide member also functions as a bank sensor that indicates the limit of the bank angle, thereby suppressing damage to the lower frame.

[0073] (Configuration 5) The saddle-type vehicle according to Configuration 3 or 4, characterized in that the resin guide member includes an upper holding portion that holds the lower frame from above. This configuration allows for more secure attachment of the resin guide member to the lower frame.

[0074] (Configuration 6) The saddle-type vehicle according to any one of Configurations 3 to 5, characterized in that the resin guide member is provided with a hole, and the mounting portion is provided with a projection that fits into the hole. With this configuration, the fitting structure can restrict the movement of the resin guide member in the circumferential and extending directions of the lower frame.

[0075] (Configuration 7) The saddle-type vehicle according to any one of Configurations 2 to 6, characterized in that the resin guide member is provided with a holding portion for holding wiring on the extended frame portion side. With this configuration, the wiring can be more securely held to the surface of the resin guide member facing the extended frame portion without coming off the resin guide member.

[0076] (Configuration 8) The saddle-type vehicle according to any one of Configurations 2 to 7, characterized in that the resin guide member is provided with a regulating hole into which the protruding portion is inserted. With this configuration, the resin guide member can be restricted from moving in the circumferential direction of the lower frame by simply inserting the protruding part into the restricting hole, thus ensuring secure installation.

[0077] (Configuration 9) The saddle-type vehicle according to any one of Configurations 3 to 8, characterized in that the resin guide member has a lower holding portion that holds the lower frame from below. With this configuration, the lower frame can be sandwiched and fixed between the upper and lower clamping parts, allowing for more secure attachment of the resin guide member.

[0078] (Configuration 10) The saddle-type vehicle according to Configuration 9, characterized in that the upper and lower holding portions have a front-to-back difference with respect to the front-to-rear direction of the vehicle. With this configuration, the difference in front and back allows for a longer distance between the holding positions in the longitudinal direction, enabling more secure attachment of the resin guide member to the lower frame. [Explanation of Symbols]

[0079] 10. Saddle-type vehicles 11. Body frame 12 Power Unit (Engine) 18 Headpipe 25a Exhaust pipe 33 Down Frame 34 Lower frame (extended frame section) 45 Protrusion 46 Mounting part 46e Protrusion 85 Exhaust gas sensor 86 Sensor Cable (Wiring) 90 Resin guide member 91 Upper holding section 91a Restriction hole 93a Clip member (holding part) 94a Fitting hole (hole) 190 Resin guide member 198 Lower holding section

Claims

1. In a saddle-type vehicle (10) comprising a body frame (11), an engine (12) supported by the body frame (11), an exhaust pipe (25a) connected to the engine (12) and extending to the rear, an exhaust gas sensor (85) provided in the exhaust pipe (25a), and wiring (86) extending from the exhaust gas sensor (85), The vehicle body frame (11) includes an extended frame portion (34) that extends along the exhaust pipe (25a), The vehicle body frame (11) is provided with a resin guide member (90) that extends along the extended frame portion (34) and guides the wiring (86) along the extended frame portion (34). The resin guide member (90) is provided on the opposite side of the extension frame portion (34) from the exhaust pipe (25a), A saddle-type vehicle characterized by its design.

2. The extended frame portion (34) is formed in a pipe shape, The extended frame portion (34) is provided with a projection (45) that restricts the circumferential movement of the resin guide member (90) and a mounting portion (46) for attaching the resin guide member (90), on the side opposite to the exhaust pipe (25a) with respect to the extended frame portion (34). The saddle-type vehicle according to feature 1.

3. The vehicle frame (11) comprises a down frame (33) extending downward from the head pipe (18) and a lower frame (34) extending rearward from the lower end of the down frame (33). The extended frame portion (34) is the lower frame (34). The saddle-type vehicle according to feature 2.

4. The resin guide member (90) extends below the lower end of the lower frame (34), The saddle-type vehicle according to feature 3.

5. The resin guide member (90) includes an upper holding portion (91) that holds the lower frame (34) from above. A saddle-type vehicle according to feature 3 or 4.

6. The resin guide member (90) is provided with a hole (94a), The mounting portion (46) is provided with a projection (46e) that fits into the hole (94a). A saddle-type vehicle according to feature 3 or 4.

7. The resin guide members (90, 190) are provided with a holding portion (93a) on the extended frame portion (34) side for holding wiring. The saddle-type vehicle according to feature 2.

8. The resin guide members (90, 190) are provided with a regulating hole (91a) into which the protruding portion (45) is inserted. The saddle-type vehicle according to feature 2.

9. The resin guide members (90, 190) are provided with a lower holding portion (198) that holds the lower frame (34) from below. The saddle-type vehicle according to feature 5.

10. The upper gripping portion (91) and the lower gripping portion (198) have a front-to-back difference with respect to the front-to-rear direction of the vehicle. The saddle-type vehicle according to feature 9.

Images