Frame structure

Abstract

To ensure airtightness and frame rigidity when using a vehicle body frame as an oil tank. [Solution] The frame structure is adopted in a saddle-ride type vehicle that uses a body frame (10) as an oil tank. This frame structure includes a head pipe (11) located at the front of the body frame, a rear plate (16) that can join left and right tank rails (12) at the upper rear side of the head pipe, a tubular down frame (14) that extends downward from the lower rear side of the head pipe, a reinforcement (71) that connects to the rear surface of the down frame below the rear plate, and an oil inlet (75) that is attached to the rear plate and forms an oil filler port (76). An oil storage space (84) is formed inside the down frame and the reinforcement, and the oil inlet passes through the rear plate and enters the storage space.

Description

[Technical Field]

[0001] The present invention relates to a frame structure for a saddle-ride type vehicle. [Background technology]

[0002] It is known to use the body frame of a saddle-ride type vehicle as an oil tank for a dry sump engine (see, for example, Patent Document 1). In the body frame described in Patent Document 1, left and right tank rails extend rearward from the top of the head pipe, and a single down frame extends downward from the bottom of the head pipe. The left and right tank rails and the single down frame are connected by left and right bridge tubes, and a plate is joined to the outer surface of each frame so as to cover the space enclosed by these frames. The space inside the plate is connected to each frame through openings, and an oil tank is formed in the front part of the body frame. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 2729950 Summary of the Invention [Problem to be solved by the invention]

[0004] However, the oil tank described in Patent Document 1 is formed by joining many parts, making it difficult to ensure airtightness, which reduces productivity and increases costs, as well as the workload of leak tests. Also, because each frame is used as an oil tank, openings are formed in each frame, reducing the frame rigidity.

[0005] The present invention has been made in view of the above points, and has as its object to provide a frame structure that can ensure airtightness and frame rigidity when the vehicle body frame is used as an oil tank. [Means for solving the problem]

[0006] One aspect of the frame structure of the present invention is a frame structure for a saddle-ride type vehicle that uses a body frame as an oil tank, and includes a head pipe located at the front of the body frame, a rear plate that can join left and right tank rails at the upper rear side of the head pipe, a tubular down frame that extends downward from the lower rear side of the head pipe, a reinforcement that is connected to the rear surface of the down frame below the rear plate, and an oil inlet that is attached to the rear plate and forms an oil filler port, and the above-mentioned problem is solved by forming an oil storage space inside the down frame and the reinforcement, and the oil inlet penetrating the rear plate and entering the storage space. [Effects of the Invention]

[0007] According to one aspect of the frame structure of the present invention, the left and right tank rails do not constitute an oil tank, which reduces the number of components of the oil tank and minimizes the number of joints, making it easier to ensure airtightness. Since leak tests can be performed in a sub-component state where the tank rails can be joined later, the workload on workers can be reduced by miniaturizing the testing equipment and reducing the weight of the frame. Furthermore, the oil inlet penetrates the rear plate, and functions as a reinforcing member, thereby increasing the rigidity of the frame. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a left side view of a saddle-ride type vehicle according to an embodiment of the present invention; [Figure 2] FIG. 10 is a partial cross-sectional view of a body frame of a comparative example. [Figure 3] FIG. 2 is a left side view of the engine and its surroundings according to the present embodiment. [Figure 4] FIG. 2 is a rear view of the sub-COMP of the body frame of the present embodiment. [Figure 5] FIG. 2 is a side view of a sub-COMP of the body frame of the present embodiment. [Figure 6] FIG. 4 is a cross-sectional view of the engine periphery taken along line AA in FIG. 3. [Figure 7] 5 is a cross-sectional view of the sub-COMP of the body frame of FIG. 4 taken along line BB. DETAILED DESCRIPTION OF THE INVENTION

[0009] A straddle-type vehicle according to one aspect of the present invention uses a body frame as an oil tank. In this frame structure of a straddle-type vehicle, a head pipe is located at the front of the body frame, a rear plate, to which left and right tank rails can be joined, is located at the upper rear side of the head pipe, and a down frame extends downward from the lower rear side of the head pipe. A reinforcement is connected to the rear surface of the down frame below the rear plate, and an oil inlet is attached to the rear plate to form an oil filler port. An oil storage space is formed inside the down frame and the reinforcement, and the oil inlet penetrates the rear plate and enters the storage space. Because the left and right tank rails do not constitute an oil tank, the number of components of the oil tank is reduced, and joints are minimized, making it easier to ensure airtightness. Because a leak test can be performed in a sub-compact state where the tank rails can be joined later, the workload on workers can be reduced by reducing the size of testing equipment and the weight of the frame. Furthermore, the oil inlet penetrates the rear plate and functions as a reinforcing member, thereby increasing the rigidity of the frame. [Example]

[0010] The saddle-riding type vehicle of this embodiment will be described below with reference to the accompanying drawings. Fig. 1 is a left side view of the saddle-riding type vehicle of this embodiment. In the following drawings, arrow Fr indicates the front of the vehicle, arrow Re indicates the rear of the vehicle, arrow L indicates the left side of the vehicle, and arrow R indicates the right side of the vehicle.

[0011] As shown in Fig. 1, a saddle-type vehicle 1 is configured by mounting various parts such as an engine 30 and an electrical system on a body frame 10. Left and right tank rails 12 extend diagonally downward and rearward from a head pipe 11 of the body frame 10, and a pair of body frames 13 extend downward from the rear portions of the left and right tank rails 12. In addition, a down frame 14 extends downward from the head pipe 11, and under-loops 15 bent rearward are connected to the lower portions of the down frame 14. Rear ends of the pair of under-loops 15 are connected to the lower portions of the pair of body frames 13, so that the body frame 10 is formed into a cradle shape.

[0012] A front fork 21 is steerably supported on the head pipe 11 via a steering shaft (not shown). Handlebars 22 are provided on the upper part of the front fork 21, and a front wheel 23 is rotatably supported on the lower part of the front fork 21. A fuel tank 24 is placed on the upper part of the pair of tank rails 12, and the tank rails 12 and fuel tank 24 are covered from the sides by front side covers 25. A seat 26 is installed behind the fuel tank 24, and a seat frame (not shown) that supports the seat 26 from below is covered from the sides by rear side covers 27.

[0013] A swing arm 28 is swingably supported by the body frame 13. The swing arm 28 extends rearward from the body frame 13, and a rear wheel 29 is rotatably supported at the rear end of the swing arm 28. The engine 30 is a four-stroke single-cylinder engine, and is suspended inside the body frame 10 via a plurality of suspension brackets 41, 42. A cylinder assembly, which is made up of a stacked cylinder 31, a cylinder head 32, and a cylinder head cover 33, is attached to the upper surface of a crankcase 36 of the engine 30. An air cleaner (not shown) is installed behind the cylinder head 32.

[0014] Left and right radiators 37 (only the right radiator 37 is shown in FIG. 1) are located in front of the cylinder head 32, and the left and right radiators 37 are attached to the down frame 14. An exhaust pipe 38 extends downward from the front left side of the cylinder head 32, passes along the right side of the cylinder 31, and is connected to a muffler 39 at the rear of the vehicle. The engine 30 also employs a dry sump lubrication system that does not have a large oil tank below the crankcase 36. In the saddle-type vehicle 1 of this embodiment, part of the body frame 10 is used as an oil tank.

[0015] Meanwhile, a configuration in which the entire body frame is used as an oil tank is also being considered. In this case, the body frame, which is made up of multiple frame components, must be treated as a frame component (frame COMP) to ensure airtightness. When conducting a leak test to ensure airtightness on the body frame, the test equipment becomes larger and the body frame becomes heavier, placing a greater burden on the worker. Furthermore, the number of joints between the frame components of the body frame increases, making it difficult to ensure airtightness. Furthermore, the need for communication holes connecting the frames reduces rigidity.

[0016] As shown in Figure 2, a configuration is also being considered in which part of the body frame is used as an oil tank. For example, left and right tank rails 93 are joined to the rear side of a head pipe 91 of a body frame 90 via a rear plate 92, and a reinforcement 95 is joined to the rear side of a down frame 94 and to the underside of the rear plate 92. An oil storage space is formed by the rear plate 92, the down frame 94, and the reinforcement 95. An oil filler port 96 is formed in the upper part of the rear plate 92, and a communication hole 97 for dropping oil and an air hole 98 as an air passage are formed in the lower part of the rear plate 92.

[0017] However, in the body frame 90 of the comparative example shown in Figure 2, multiple holes such as an oil filler port 96, a communication hole 97, and an air hole 98 are formed in the rear plate 92, making it difficult to ensure sufficient frame rigidity. Also, the shapes of the surrounding parts must be taken into consideration so that the multiple holes are not blocked when the frames are joined together, resulting in complex part shapes. Therefore, in the frame structure of the saddle-type vehicle 1 of this embodiment, the number of components of the oil tank is reduced to ensure airtightness, and an oil inlet 75 (see Figure 7) is provided so as to penetrate the rear plate 16, forming an oil filler port while increasing frame rigidity.

[0018] The frame structure will be described with reference to Figures 3 to 7. Figure 3 is a left side view of the frame structure of this embodiment. Figure 4 is a rear view of the sub-COMP of the body frame of this embodiment. Figure 5 is a side view of the sub-COMP of the body frame of this embodiment. Figure 6 is a cross-sectional view of the engine periphery taken along line AA in Figure 3. Figure 7 is a cross-sectional view of the sub-COMP of the body frame of Figure 4 taken along line BB. Note that in Figure 6, the radiator is shown by a two-dot chain line, and the engine is omitted.

[0019] As shown in Figure 3, a head pipe 11 is located at the front of the body frame 10, a rear plate 16 is joined to the upper rear side of the head pipe 11, and a down frame 14 is joined to the lower rear side of the head pipe 11. Left and right tank rails 12 are joined to the head pipe 11 and the rear plate 16. The down frame 14 extends downward from the lower rear side of the head pipe 11. A reinforcement 71 is joined to the rear surface of the down frame 14 below the rear plate 16, and the down frame 14 is reinforced by the reinforcement 71.

[0020] An oil inlet 75 is attached to the rear plate 16, and an oil fill port is formed in the body frame 10 by the oil inlet 75. In this embodiment, the down frame 14 and the reinforcement 71 are used as an oil tank. In addition, the pair of tank rails 12 and the reinforcement 71 are connected via a reinforcing bridge tube (bridge) 19. Below the bridge tube 19, the engine 30 is supported by the body frame 10. A magneto cover 34 is installed on the left side of the crankcase 36 of the engine 30, and a sprocket cover 35 is installed behind the magneto cover 34.

[0021] The cylinder 31 is installed on the upper surface of the crankcase 36, the cylinder head 32 is installed on the upper surface of the cylinder 31, and the cylinder head cover 33 is installed on the upper surface of the cylinder head 32. The front part of the crankcase 36 is supported on the down frame 14 via a suspension bracket 41, the rear part of the cylinder head 32 is supported on the tank rail 12 via a suspension bracket 42, and the lower part of the crankcase 36 is supported on the underloop 15 via a suspension bracket 43. An overflow hose 81 extends from the cylinder head cover 33 to the down frame 14, and an oil recovery hose 82 extends from the crankcase 36 to the reinforcement 71.

[0022] 4 and 5, the sub-COMP (Subcomponent) of the body frame 10 is formed by joining together the head pipe 11, the down frame 14, the reinforcement 71, the rear plate 16, the left and right rail plates 65, and the oil inlet 75. The head pipe 11 is formed in a cylindrical shape, and the upper edge of the tubular down frame 14 is joined to the underside of the rear surface of the head pipe 11. A connection part 51 is provided on the lower end surface of the head pipe 11, and an oil supply hose 83 extends from the connection part 51 to the bottom of the crankcase 36. In addition, a drain bolt 52 is provided on the lower end surface of the head pipe 11 adjacent to the connection part 51.

[0023] A reinforcement 71 is joined to the rear surface of the down frame 14, and extends vertically along the down frame 14. An oil storage space 84 (see FIG. 7) is formed inside the down frame 14 and the reinforcement 71. The top surfaces of the down frame 14 and the reinforcement 71 are open, and the upper end edge of the down frame 14 is joined to the head pipe 11, and the upper end edge of the reinforcement 71 is joined to the rear plate 16 and the left and right rail plates 65. A base 72 to which the bridge tube 19 (see FIG. 3) is joined is provided on the rear surface of the reinforcement 71.

[0024] The rear plate 16 is formed by connecting an upper plate 61 and a lower plate 62 (see Figure 4) with a rear plate 63. The upper plate 61 and the lower plate 62 are formed in a generally triangular shape with the left and right width increasing from the front end toward the rear. The front ends of the upper plate 61 and the lower plate 62 are joined to the rear surface of the head pipe 11. Both the left and right sides of the rear plate 16 are open, and left and right rail plates 65 are joined to both side edges of the rear plate 16. The rail plates 65 have a shape that follows the inner surface of the tank rail 12, making it easy to join the inner surface of the tank rail 12 to the rail plates 65.

[0025] A mounting plate 64 is provided on the rear side of the upper surface of the upper plate 61, and is formed so that the front part of the fuel tank 24 (see FIG. 1) can be attached to the mounting plate 64. Insertion holes are formed in the upper plate 61 and the lower plate 62, and an oil inlet 75 is joined to the insertion holes in the upper plate 61 and the lower plate 62. The oil inlet 75 is formed in a pipe shape, and increases the rigidity of the rear plate 16. An oil filler port 76 (see FIG. 7) is formed in the oil inlet 75, and an oil level gauge 85 is inserted into the oil filler port 76.

[0026] In this way, the reinforcement 71 is joined to the rear surface of the down frame 14, and the down frame 14 and the reinforcement 71 form an oil tank. In addition, the left and right tank rails 12 can be joined to the rear plate 16 via the left and right rail plates 65, and the opening on the top surface of the reinforcement 71 is airtightly closed by the rear plate 16 and the left and right rail plates 65. A leak test can be performed in a sub-COMP state of the body frame 10 to which the left and right tank rails 12 can be joined later, and the workload on workers can be reduced by downsizing the test equipment and lightening the frame weight.

[0027] As shown in Fig. 6, left and right bridge tubes 19 for connecting the reinforcement 71 to the left and right tank rails 12 are joined to a base 72 of the reinforcement 71. The frame rigidity is ensured by joining the reinforcement 71 to the left and right tank rails 12 via the left and right bridge tubes 19. By joining the bridge tube 19 to the reinforcement 71 on the rear side of the down frame 14 rather than to the down frame 14, the bridge tube 19 is less likely to affect the layout of the peripheral parts of the down frame 14, and an increase in the size of the vehicle body can be avoided.

[0028] More specifically, installation spaces for the left and right radiators 37 are secured on both sides of the down frame 14 and the reinforcement 71. A base 72 is provided on the rear surface of the reinforcement 71, and the left and right bridge tubes 19 are joined to the rear surface of the reinforcement 71. Because the left and right bridge tubes 19 are joined to the reinforcement 71 behind the left and right radiators 37, there is no need to move the radiators 37 forward of the down frame 14 or to move the radiators 37 outward in the vehicle width direction from the down frame 14. This makes it possible to suppress increases in the wheelbase and vehicle width dimensions.

[0029] As shown in Figure 7, an oil storage space 84 is formed by the down frame 14 and the reinforcement 71 at the front of the body frame 10. An oil inlet 75 penetrates the upper plate 61 and the lower plate 62 of the rear plate 16 and enters the storage space 84. An oil filler port 76 of the oil inlet 75 is connected to the storage space 84, and engine oil is filled into the storage space 84 from the oil filler port 76. An oil level gauge 85 is inserted from the oil filler port 76 into the storage space 84, and the amount and state of oil in the storage space 84 can be checked using the oil level gauge 85.

[0030] Three communication holes 54-56 are formed on the back surface of the down frame 14, and the insides of the down frame 14 and the reinforcement 71 are connected to each other through the communication holes 54-56. The communication holes 54-56 promote the movement of oil between the down frame 14 and the reinforcement 71. The uppermost communication hole 54 is formed in an elongated hole shape, and the remaining two communication holes 55, 56 are formed in circular shapes. The elongated communication hole 54 is formed to be the largest of the three communication holes 54-56. These communication holes 54-56 make it easy to move oil not only from the upper side of the reinforcement 71 but also from the lower side of the reinforcement 71 to the down frame 14.

[0031] Furthermore, the oil inlet 75 is directed toward the elongated communicating hole 54, which is positioned on an extension of the oil filler port 76. In other words, by forming the elongated communicating hole 54 below the oil filler port 76 in the insertion direction of the oil level gauge 85, the oil level gauge 85 attached to the oil filler port 76 can easily fit into the communicating hole 54. Furthermore, the circular communicating holes 55, 56 other than the elongated communicating hole 54 are formed to be as small as possible, so that a reduction in the strength of the down frame 14 due to the communicating holes 55, 56 is suppressed, and sufficient frame rigidity of the body frame 10 is ensured.

[0032] The gap between the rear surface of the down frame 14 and the rear surface of the reinforcement 71 narrows downward, and a lowest communicating hole 56 is formed in the rear surface of the down frame 14 opposite the lower end of the rear surface of the reinforcement 71. The lower end of the inner side of the reinforcement 71 connects to the inside of the down frame 14 through the communicating hole 56, and oil stored in the lower end of the inner side of the reinforcement 71 is also moved inside the down frame 14. Because the gap between the opposing rear surfaces of the down frame 14 and the reinforcement 71 narrows toward the communicating hole 56, oil inside the reinforcement 71 is smoothly guided to the communicating hole 56.

[0033] A connection port 73 to which an oil recovery hose 82 (see FIG. 3) is connected is formed at the top of the reinforcement 71. Oil is returned from the crankcase 36 to the inside of the reinforcement 71 (oil tank) through the oil hose 82. In addition, a connection part 51 to which an oil supply hose 83 is connected is provided at the bottom end surface of the down frame 14. A strainer 53 is provided at the suction port of the connection part 51, and the oil is filtered by passing through the strainer 53. Oil is sent from the inside of the down frame 14 (oil tank) to the bottom of the crankcase 36 through the oil hose 83.

[0034] In the frame structure configured in this manner, first, the sub-COMP of the body frame 10 is formed by the head pipe 11, down frame 14, reinforcement 71, rear plate 16, left and right rail plates 65, and oil inlet 75. After a leak test is conducted on the sub-COMP of the body frame 10, the left and right tank rails 12 are connected to the left and right rail plates 65, and the left and right tank rails 12 are connected to the reinforcement 71 via left and right bridge tubes 19. In addition, the body frame 13 is connected to the down frame 14 via the under loop 15, thereby forming the frame COMP.

[0035] As described above, according to the frame structure of this embodiment, the left and right tank rails 12 do not constitute an oil tank, so the number of components of the oil tank is reduced, and the number of joints is minimized, making it easier to ensure airtightness. Since leak tests can be performed in a sub-COMP state where the tank rails 12 can be joined later, the workload on workers can be reduced by making the test equipment more compact and the frame lighter. Furthermore, the oil inlet 75 penetrates the rear plate 16, and functions as a reinforcing member, thereby increasing the rigidity of the frame.

[0036] In this embodiment, the rear surface of the reinforcement is formed so as to approach the rear surface of the down frame as it goes downward, but the shape of the reinforcement may be changed as appropriate depending on the shape of the fuel tank.

[0037] In addition, in this embodiment, the rear plate is formed by connecting the upper plate, the lower plate, and the rear plate, but the rear plate may be formed so that the left and right tank rails can be joined at the upper rear side of the head pipe.

[0038] Furthermore, in this embodiment, the upper surface of the reinforcement is closed by the rear plate and the left and right rail plates, but the upper surface of the reinforcement may be closed by only the rear plate.

[0039] In addition, in this embodiment, three communication holes are formed on the rear surface of the down frame, but one or two communication holes may be formed on the rear surface of the down frame, or four or more communication holes may be formed on the rear surface of the down frame.

[0040] Furthermore, in this embodiment, the uppermost communicating hole among the multiple communicating holes in the down frame is located on the extension line of the oil inlet, but it is sufficient that any of the multiple communicating holes in the down frame is located on the extension line of the oil inlet.

[0041] The frame structure of this embodiment is not limited to the above-described off-road straddle-type vehicle, but may also be used in other types of straddle-type vehicles. Note that a straddle-type vehicle is not limited to all vehicles in which the rider sits astride a seat, but also includes scooter-type vehicles in which the rider does not sit astride a seat.

[0042] As described above, the first aspect is a frame structure for a saddle-type vehicle (1) that uses a body frame (10) as an oil tank. The frame structure includes a head pipe (11) located at the front of the body frame, a rear plate (16) that can connect left and right tank rails (12) to the upper rear side of the head pipe, a tubular down frame (14) extending downward from the lower rear side of the head pipe, a reinforcement (71) that connects to the rear surface of the down frame below the rear plate, and an oil inlet (75) attached to the rear plate and forming an oil filler port (76). An oil storage space (84) is formed inside the down frame and the reinforcement, and the oil inlet penetrates the rear plate and enters the storage space. With this configuration, the left and right tank rails do not constitute an oil tank, reducing the number of components of the oil tank and minimizing joints, making it easier to ensure airtightness. Because a leak test can be performed in a sub-COMP state where the tank rails can be connected later, the workload on workers can be reduced by reducing the size of the testing equipment and the weight of the frame. In addition, an oil inlet passes through the rear plate and acts as a reinforcement, increasing the rigidity of the frame.

[0043] In the second aspect, in the first aspect, left and right rail plates (65) are joined to the rear plate, left and right tank rails can be joined to the rear plate via the left and right rail plates, and the upper surface of the reinforcement is closed by the rear plate and the left and right rail plates. With this configuration, a leak test can be performed with the body frame in the sub-COMP state, and the workload on workers can be reduced by reducing the size of the test equipment and the weight of the frame.

[0044] In the third aspect, in the first and second aspects, the reinforcement is provided with a base (72) to which left and right bridges (bridge tubes 19) for connecting the reinforcement to the left and right tank rails can be joined. With this configuration, the frame rigidity is ensured by connecting the down frame and the reinforcement via the left and right bridges. By joining the left and right bridges to the reinforcement rather than the down frame, the bridge tubes are less likely to affect the layout of the peripheral parts of the down frame, and an increase in the size of the vehicle body can be avoided.

[0045] In the fourth aspect, in the third aspect, an installation space for the radiator (37) is secured on both sides of the down frame, and a base is provided on the rear surface of the reinforcement. With this configuration, it is not necessary to move the radiator forward of the down frame or to move the radiator outward in the vehicle width direction from the down frame, and it is possible to suppress an increase in the wheelbase and vehicle width dimensions.

[0046] A fifth aspect is any one of the first to fourth aspects, in which the down frame is formed with communication holes (54-56) that connect the insides of the down frame and the reinforcement, and the communication holes are positioned on an extension of the oil filler port. With this configuration, the movement of oil between the down frame and the reinforcement is promoted, and the oil level can be checked using an oil level gauge installed at the oil filler port.

[0047] In a sixth aspect, in the fifth aspect, the communication holes are a plurality of communication holes, and the largest of the plurality of communication holes (54) is located on an extension of the oil filler port. With this configuration, the plurality of communication holes can promote the movement of oil between the down frame and the reinforcement while making it easier to insert the oil level gauge. In addition, by forming the communication holes other than one communication hole small, frame rigidity is ensured.

[0048] A seventh aspect is any one of the first to sixth aspects, in which the distance between the rear surface of the down frame and the rear surface of the reinforcement narrows downward, and a communication hole connecting the insides of the down frame and the reinforcement is formed in the down frame facing the lower end of the rear surface of the reinforcement. With this configuration, the lower end of the inside of the reinforcement is connected to the inside of the down frame through the communication hole, and oil stored in the lower end of the inside of the reinforcement is also moved to the inside of the down frame. Because the distance between the opposing rear surfaces of the down frame and the reinforcement narrows toward the communication hole, oil inside the reinforcement is smoothly guided to the communication hole.

[0049] Although the present embodiment has been described, other embodiments may be made by combining the above-described embodiments and modifications in whole or in part.

[0050] Furthermore, the technology of the present invention is not limited to the above-described embodiments, and various changes, substitutions, and modifications may be made without departing from the spirit of the technical idea. Furthermore, if the technical idea can be realized in a different way due to technological advances or other derived technologies, it may be implemented using that method. Therefore, the claims cover all embodiments that may fall within the scope of the technical idea. [Explanation of symbols]

[0051] 1: Saddle-type vehicle 10: Body frame 11: Head pipe 12: Tank rail 14: Down frame 16: Rear plate 19: Bridge tube (bridge) 37: Radiator 54-56: Down frame communication holes 65: Rail plate 71: Reinforce 72: Reinforce Pedestal 75: Oil inlet 76: Oil filler port 84: Storage space

Claims

1. A frame structure of a saddle-ride type vehicle in which a body frame is used as an oil tank, a head pipe located at a front portion of the body frame; a rear plate capable of joining the left and right tank rails at an upper rear side of the head pipe; a tubular down frame extending downward from a rear lower portion of the head pipe; a reinforcement member connected to a rear surface of the down frame below the rear plate; an oil inlet attached to the rear plate and forming an oil inlet, An oil storage space is formed inside the down frame and the reinforcement, A frame structure characterized in that the oil inlet penetrates the rear plate and enters the storage space.

2. Left and right rail plates are joined to the rear plate, and the left and right tank rails can be joined to the rear plate via the left and right rail plates, 2. The frame structure according to claim 1, wherein an upper surface of the reinforcement is closed by the rear plate and the left and right rail plates.

3. 3. The frame structure according to claim 1, wherein the reinforcement is provided with a base to which left and right bridges for connecting the reinforcement to the left and right tank rails can be joined.

4. 4. The frame structure according to claim 3, wherein a space for installing a radiator is secured on both sides of the down frame, and the base is provided on a rear surface of the reinforcement.

5. A communication hole is formed in the down frame to connect the inside of the down frame and the inside of the reinforcement, 3. The frame structure according to claim 1, wherein the communication hole is positioned on an extension of the oil inlet.

6. the communication hole is a plurality of communication holes, 6. The frame structure according to claim 5, wherein the largest of the plurality of communication holes is positioned on an extension of the oil inlet.

7. 3. The frame structure according to claim 1, wherein a distance between a rear surface of the down frame and a rear surface of the reinforcement narrows downward, and a communication hole connecting the insides of the down frame and the reinforcement is formed in the down frame facing a lower end of the rear surface of the reinforcement.

Images