JP2017190012A - Frame structure of saddle-riding type vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a frame structure of a saddle-riding type vehicle which enables accessory parts to be stably attached thereto while inhibiting increase of the number of components.SOLUTION: A first engine support part S1 for engine mounting is provided at a vehicle body frame FR of a motor cycle. A first mount part M1 of an engine E is connected to the first engine support part S1 by a first fastening member F1. The first engine support part S1 has a recessed part 34 opening outward. An attachment auxiliary member 32 having an attachment part 52 of a design component 30 is attached to the recessed part 34.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a frame structure of a saddle riding type vehicle in which accessory parts are attached to a body frame of the saddle riding type vehicle.

  In a saddle riding type vehicle such as a motorcycle, there is a vehicle body frame that supports an engine that is a driving source and attached to an accessory (for example, Patent Document 1). In Patent Document 1, an engine guard is attached as an accessory.

JP 2002-356189 A

  In Patent Document 1, a mount part is provided to firmly attach the accessory part, and the accessory part is attached to the vehicle body frame via the mount part. In such a configuration, the number of parts increases and the weight of the body frame also increases.

  An object of the present invention is to provide a straddle-type vehicle frame structure in which an accessory can be stably attached while suppressing an increase in the weight of the body frame.

  In order to achieve the above object, the straddle-type vehicle frame structure of the present invention has a drive source mount for a drive source mount provided on a body frame of the straddle-type vehicle, and the drive source mount is a fastening member. The drive source support portion has a recess opened outward, and an attachment auxiliary member having an attachment portion for an accessory is attached to the recess. The drive source support part is, for example, a cylindrical pipe. Here, the “attachment part” means an accessory that is selectively added by the user, not a part that is standardly provided on the vehicle, and is, for example, a design part that changes the appearance of the vehicle according to the user's preference.

  According to this configuration, since the attachment auxiliary member is attached to the strong frame portion to which the drive source is attached, the attachment auxiliary member can be firmly supported. Therefore, it is possible to stably attach the accessory part to the body frame. In addition, since the existing drive source support for the drive source mount is used as the attachment part for the accessory part, there is no need to separately provide an attachment part for the accessory part on the body frame, which increases the weight of the body frame. Can be suppressed. In this way, since there is no need to provide a separate mounting portion, the number of parts can be reduced. As a result, the attachment work of the accessory parts is simplified, and the cost for attaching the accessory parts can be reduced.

  In this invention, it is preferable that the said attachment part is arrange | positioned in the vehicle width direction outer side rather than the outer side end of the said drive source support part. According to this configuration, even when the mounting portion cannot be provided in the space because the space in the recess is narrow, the mounting portion can be disposed on the outer side in the vehicle width direction than the recess by the mounting auxiliary member. . Further, since the attachment portion can be accessed from the outside in the vehicle width direction, attachment of the accessory part to the attachment portion is facilitated.

  In the present invention, the operation portion of the fastening member is exposed in the recess, and the attachment assisting member has a body portion inserted into the recess and an end wall on which the attachment portion is formed. Is preferred. According to this configuration, since the attachment auxiliary member is attached so as to cover the operation portion of the fastening member exposed to the outside, the exposure of the operation portion is suppressed, and the degree of design freedom with respect to the appearance of the operation portion is increased. improves. In this case, it is preferable that the attachment portion is arranged to face the operation portion and the fastening member in the axial direction. According to this configuration, it is possible to attach the attachment assisting member while preventing interference with the operation unit.

  In this invention, it is preferable that the said attachment auxiliary member is being fixed to the said drive source support part with the fixing member fastened in the direction orthogonal to the axial direction of the said fastening member. According to this configuration, since the fixing member is fastened from the direction orthogonal to the axial direction of the fastening member, that is, the radial direction of the fastening member, the mounting auxiliary member is unlikely to interfere with the fastening member or the fixing member. Is easy to fix. In addition, since the fixing member is orthogonal to the fastening member, it is difficult to be affected by the rotation of the fastening member, and the attachment auxiliary member can be firmly fixed.

  In the present invention, the attachment portion of the attachment auxiliary member preferably includes a screw hole. According to this configuration, since the accessory part can be attached to the attachment part using the screw body, the attachment part can be easily attached. In this case, it is preferable that a cover member is attached to the outside of the accessory part. According to this configuration, since the screw member for attaching the accessory part can be hidden by the cover member, the appearance of the vehicle is improved.

  In this invention, it is preferable that the elastic member is arrange | positioned between the outer peripheral surface of the said attachment auxiliary member, and the inner peripheral surface of the said drive source support part. According to this configuration, the elastic member absorbs the rattling of the mounting auxiliary member, and foreign matters such as rain water, water during car washing, and dust enter from the gap between the mounting auxiliary member and the drive source support. It is easy to prevent.

  The attachment structure of the accessory of the saddle riding type vehicle according to the present invention is an attachment structure of the accessory to the body frame of the saddle riding type vehicle, and is provided on a drive source support for a drive source mount provided on the body frame. The mount portion of the drive source is connected by a fastening member, the drive source support portion has a recess opening outward, and an attachment auxiliary member having an attachment portion of the accessory part is attached to the recess, The mounting portion is disposed on the outer side in the vehicle width direction from the outer end of the drive source support portion, the operation portion of the fastening member is exposed in the recess, and the attachment auxiliary member is provided between the operation portion and the fastening member. It is arranged to face in the axial direction.

  According to this configuration, since the attachment auxiliary member is attached to the strong frame portion to which the drive source is attached, the attachment auxiliary member can be firmly supported. Therefore, it is possible to stably attach the accessory part to the body frame. In addition, since the drive source support for the drive source mount is used as an attachment for attachment parts, there is no need to separately provide attachment parts for attachment parts on the body frame, and the increase in the weight of the body frame is suppressed. it can. Furthermore, even if the mounting portion cannot be provided in the space because the space in the recess is narrow, the mounting portion can be disposed outside the recess in the vehicle width direction by the mounting auxiliary member. And since the trunk | drum of an attachment auxiliary member and the operation part of a fastening member are arrange | positioned facing the axial direction of a fastening member, an attachment auxiliary member does not interfere with an operation part.

  According to the frame structure of the saddle riding type vehicle and the attachment structure of the accessory of the present invention, it is possible to stably attach the accessory to the vehicle body frame while suppressing an increase in the weight of the vehicle body frame.

1 is a side view showing a motorcycle that is a kind of saddle riding type vehicle having a frame structure according to a first embodiment of the present invention. It is a top view which shows the front part of the vehicle body frame of the same motorcycle. It is a top view which shows the design component attachment part of the same vehicle body frame. It is a disassembled perspective view which shows the attachment structure of consent craft parts. It is sectional drawing which shows the attachment structure of consent craft parts.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. In the present specification, “left side” and “right side” refer to the left and right sides as viewed from the driver who gets on the vehicle.

FIG. 1 is a side view of a motorcycle having a frame structure according to an embodiment of the present invention. A body frame FR of the motorcycle includes a main frame 1 forming a front half and a rear frame 2 forming a rear half. And have. The main frame 1 includes a first main frame piece 1a that extends obliquely downward and rearward from the upper part of the head pipe 4 provided at the front end, and is disposed below the first main frame piece 1a and obliquely rearward and downward from the lower part of the head pipe 4. A second main frame piece 1b extending in the direction of the first main frame piece 1b, and a reinforcing pipe 1c for connecting intermediate portions of the first and second main frame pieces 1a, 1b. The first main frame piece 1a is connected to a cross member 1d extending in the vehicle width direction at the rear part.

  The rear frame 2 has a seat rail 2a extending rearward from the cross member 1d and a front end connected to a rear end portion of the first main frame piece 1a. The rear frame 2 extends obliquely rearward and upward from the front end and is connected to the lower surface of the seat rail 2a. And a reinforcing rail 2b. A pair of left and right seat rails 2a and reinforcing rails 2b are also provided.

  A front fork 8 is pivotally supported on the head pipe 4 via a steering shaft (not shown). A steering handle 6 is fixed to the upper end portion of the front fork 8, and a front wheel 10 is attached to the lower end portion of the front fork 8. A swing arm bracket 9 is provided at the rear end of the main frame 1. A swing arm 12 is pivotally supported around a pivot shaft 16 attached to the swing arm bracket 9 so as to be swingable up and down. A rear wheel 14 is rotatably supported at the rear end of the swing arm 12.

  A fuel tank 15 is disposed above the first main frame piece 1a of the main frame 1, and a rider's seat 18 and a passenger's seat 20 are supported on the seat rail 2a of the rear frame 2.

  An engine E, which is a drive source, is attached to the front side of the swing arm bracket 9 below the first main frame 1a. The engine E drives the rear wheel 14 via a power transmission member 11 such as a chain. The engine E includes a crankcase 21 that supports the crankshaft 22, a cylinder 23 connected to an upper portion thereof, and a cylinder head 25 connected to an upper portion of the cylinder 23.

  As shown in FIG. 2, a pair of left and right first main frame pieces 1a, second main frame pieces 1b, and reinforcing pipes 1c are provided. The distance between the pair of left and right main frame pieces 1a, 1a in the vehicle width direction gradually increases from the head pipe 4 to the rear in the front half and is substantially constant from the middle to the rear half. The rear portions of the left and right main frame pieces 1a, 1a are connected by the cross member 1d extending in the vehicle width direction.

  The engine E is disposed between the left and right main frame pieces 1a and 1a in plan view. As shown in FIG. 1, the engine E is supported by the first to third engine support portions S1 to S3 of the vehicle body frame FR by the first to third mount portions M1 to M3, respectively. 1st-3rd engine support part S1-S3 is a drive source support part for mounting the drive source of a vehicle.

  Specifically, the left and right second main frame pieces 1 b and 1 b extend rearward and obliquely downward from the head pipe 4, and their lower ends are positioned in front of the cylinder 23 of the engine E. A first engine support portion S1 is provided at the lower end of the second main frame piece 1b. The first engine support S1 includes a cylindrical pipe 26 and is fixed to the second main frame pieces 1b and 1b by welding. A first mount portion M1 protruding forward is formed at the front portion of the cylinder 23 of the engine E, and the first mount portion M1 is connected to the first engine support portion S1 by a first fastening member F1 such as a bolt. Has been.

  Further, a second engine support portion S2 that protrudes downward is provided on the lower surface of the cross member 1d. The second engine support portion S2 is composed of a pair of left and right projecting pieces made of sheet metal, and is fixed to the lower surface of the cross member 1d by welding. A second mount portion M2 protruding upward is formed on the upper portion of the rear portion of the crankcase 21 of the engine E, and the second mount portion M2 is attached to the second engine support portion S2 by a second fastening member F2 such as a bolt. Are connected.

  Further, a third engine support S3 made of a sheet metal extending forward is provided at the lower part of the left and right swing arm brackets 9. The third engine support S3 is fixed to the swing arm bracket 9 by welding. A third mount portion M3 protruding rearward is formed at the lower portion of the rear portion of the crankcase 21 of the engine E, and the third mount portion M3 is mounted on the third engine support portion S3 by a third fastening member F3 such as a bolt. Are connected.

  Design parts 30 which are a kind of accessory parts are attached to the left and right first engine support portions S1 of the vehicle body frame FR. Here, the “accessory part” refers to an accessory that is selectively added by the user, not a part that is standardly provided in the vehicle. The design component 30 is a component that changes the appearance of the vehicle to the user's preference. The design component 30 is disposed behind the handle 6, below the fuel tank 15, and below the front of the rider's seat 18. Details of the structure of the design component 30 will be described later.

  As shown in FIG. 3, the design component 30 is attached to the first engine support portion S <b> 1 via an attachment auxiliary member 32. Specifically, as shown in FIG. 4, the first engine support portion S <b> 1 formed of the cylindrical pipe 26 has a recess 34 that opens outward, and the attachment auxiliary member 32 is attached to the recess 34. It has been. Within this recess 34, the operating portion 35 of the first fastening member F1 is exposed outward. In the present embodiment, the operation unit 35 is a hexagonal head of a bolt.

  The attachment assisting member 32 has a cylindrical body portion 36 that is inserted into the recess 34, and an end wall 38 that is disposed outside the recess 34. As shown in FIG. 5, the body portion 36 has a cylindrical shape having an axial center in the vehicle width direction, and the end wall 38 constitutes one end wall that closes the opening of the cylindrical body portion 36 in the vehicle width direction. The outer diameter of the end wall 38 is larger than the outer diameter of the body portion 36. Specifically, the outer diameter of the trunk portion 36 is substantially the same as the inner diameter of the cylindrical pipe 26 of the first engine support portion S1, and the outer diameter of the end wall 38 is substantially the same as the outer diameter of the cylindrical pipe 26. Further, the height of the body portion 36 (the length in the direction of the axis AX) is larger than the height of the end wall 38. Thus, the support of the design component 30 is stabilized by lengthening the trunk portion 36 inserted into the recess 34.

  An annular groove 40 that is recessed on the inner diameter side of the body portion 36 is formed at a connection portion between the outer peripheral surface of the body portion 36 and the end wall 38. An O-ring 42 which is a kind of elastic member is fitted in the annular groove 40. That is, the elastic member is disposed between the outer peripheral surface of the trunk portion 36 of the attachment assisting member 32 and the inner peripheral surface of the cylindrical pipe 26 of the first engine support portion S1. In this embodiment, the cross-sectional shape of the elastic member 42 is an ellipse, but it may be an X shape or an I shape. Since it contacts in two points as it is X shape, the penetration | invasion of a foreign material can be suppressed effectively. When the shape is I, the contact area increases, so that intrusion of foreign matter can be more effectively suppressed.

  A plurality (two in the present embodiment) of bolt insertion holes 44 are formed in a portion of the peripheral wall of the cylindrical pipe 26 of the first engine support portion S1 that is closer to the outside in the vehicle width direction. A screw hole 46 is formed at a position corresponding to the bolt insertion hole 44 on the peripheral wall of the body portion 36 of the attachment assisting member 32. The bolt insertion hole 44 and the screw hole 46 are opened in a direction orthogonal to the axis AX of the first fastening member F1.

  With the body portion 36 of the auxiliary mounting member 32 inserted into the recess 34 of the first engine support portion S1, a fixing member 50 such as a bolt is inserted into the bolt insertion hole 44 through the spacer 48, and the screw It is fastened to the hole 46. That is, the attachment auxiliary member 32 is fixed to the first engine support portion S1 by the fixing member 50 that is fastened in a direction orthogonal to the axial direction AX of the first fastening member F1. In the present embodiment, as is apparent from FIG. 3, the attachment assisting member 32 is fixed by two fixing members 50. However, the fixing member 50 may be one, or may be three or more. Good. Further, in the present embodiment, the two fixing members 50 are disposed in a portion below the surface perpendicular to the vertical direction of the cylindrical pipe 26 of the first engine support portion S1. Thereby, it becomes difficult for the fixing member 50 to be visually recognized by the rider.

  As shown in FIG. 5, the operation portion 35 of the first fastening member F <b> 1 is placed inside the cylindrical body portion 36 of the attachment auxiliary member 32 in a state where the attachment auxiliary member 32 is fixed to the first engine support portion S <b> 1. positioned. That is, the end wall 38 of the attachment assisting member 32 faces the operation portion 35 of the first fastening member F1 and the axial direction AX of the first fastening member F1. An attachment portion 52 is formed on the end wall 38 of the attachment auxiliary member 32. In the present embodiment, the attachment portion 52 includes a screw hole 52. Specifically, the end wall 38 is cylindrical, and a screw hole 52 is formed at the center of the cylinder. Thus, since it is cylindrical and the screw hole 52 is formed in the center, it is easy to manufacture with a lathe.

  With this arrangement, the attachment portion 52 is located on the outer side in the vehicle width direction from the outer end of the first engine support portion S1, and the operation portion 35 of the first fastening member F1 and the axial center direction of the first fastening member F1. Opposite to AX.

  As illustrated in FIG. 4, the design component 30 includes a main body portion 54 that is long in the front-rear direction and a cylindrical boss portion 56 that protrudes inward in the vehicle width direction from the main body portion 54. The main body portion 54 gradually decreases in size in the vertical direction toward the rear in a side view. A bolt insertion hole 58 extending in the vehicle width direction is formed in a portion corresponding to the boss portion 56 in the front portion of the main body portion 54. As shown in FIG. 5, the bolt insertion hole 58 extends from the main body portion 54 through the boss portion 56 in the vehicle width direction.

  As shown in FIG. 4, a first cover mounting hole 60 and a second cover mounting hole 62 facing in the vehicle width direction are formed behind the bolt insertion hole 58 in the main body portion 54 side by side in the front-rear direction. A cover member 64 is attached to the outer surface of the design component 30. The cover member 64 is made of a plate material, and has a shape that substantially conforms to the outer shape of the design component 30 in a side view.

  Rubber well nuts 66, 66 are inserted into the first and second cover mounting holes 60, 62 of the design component 30 from the outside in the vehicle width direction. Furthermore, screw bodies 68 and 68 are inserted into the two through holes 64 a and 64 a formed in the cover member 64 from the outside in the vehicle width direction, and are fastened to the well nuts 66 and 66. As a result, the well nuts 66 and 66 expand in the radial direction and are crimped to the inner surfaces of the first and second cover mounting holes 60 and 62, whereby the cover member 64 is attached to the design component 30.

  Next, the mounting structure of the design component 30 will be described. As shown in FIG. 4, the first engine support portion S1 is fastened to the first mount portion M1 by the first fastening member F1 via the cylindrical collar 70 through which the first fastening member F1 is inserted. Here, an adjuster member 72 for inserting the first fastening member F1 is interposed between the collar 70 and the operation portion 35 of the first fastening member F1. The adjuster member 72 is screwed into the screw hole 76 of the first engine support portion S1 and is fixed to the first engine support portion S1 by a rotation prevention nut 78.

  More specifically, an annular flange 75 projecting radially inward is formed on the inner peripheral surface of the cylindrical pipe 26 of the first engine support portion S1, and the inner peripheral surface of the flange 75 is projected radially inward. The screw hole 76 is formed in the upper part. The adjuster member 72 has a cylindrical shape and has a screw portion 72a formed on the outer peripheral surface thereof. The screw portion 72a is screwed into the screw hole 76 of the first engine support portion S1.

  The first fastening member F1 is inserted through the inside of the adjuster member 72, the inside of the collar 70, and the insertion hole 80 of the first mount portion M1 of the engine E from the outside in the vehicle width direction. By rotating the adjuster member 72 in this state, the first mount portion M1 (engine E) is positioned in the vehicle width direction with respect to the first engine support portion S1 (body frame FR). Subsequently, the rotation stop nut 78 is screwed into the threaded portion 72a of the adjuster member 72, and the position of the adjuster member 72 is fixed.

  The nut 84 is fastened to the tip portion protruding from the first mount portion M1 of the screw portion 82 of the first fastening member F1 while being positioned and fixed by the adjuster member 72 and the locking nut 78. The adjuster member 72, the collar 70, and the first mount portion M1 of the engine E are sandwiched between the operation portion 35 of the first fastening member F1 and the nut 84, and the fastening force of the nut 84 is used for the respective portions 72, 70. , Acting on M1. As a result, the first mount portion M1 of the engine E is firmly supported by the first engine support portion S1 of the vehicle body frame FR.

  It is sufficient to position the first mount portion M1 (engine E) in the vehicle width direction with respect to the first engine support portion S1 (body frame FR) only with one of the left and right first engine support portions S1. Therefore, the adjuster member 72 is provided only on the first engine support portion S1 on one side. In the present embodiment, an adjuster member 72 is provided on the right first engine support portion S1. The left first engine support portion S1 is not provided with the adjuster member 72 and the rotation prevention nut 78, and the first engine support portion S1 is provided between the operation portion 35 and the nut 84 of the first fastening member F1. The collar portion 75, the collar 70, and the first mount portion M1 of the engine E are sandwiched, and the fastening force of the nut 84 acts on these portions 75, 70, M1.

  Subsequently, the design component 30 is attached to the first engine support portion S <b> 1 via the attachment auxiliary member 32. Specifically, first, the attachment assisting member 32 is fixed to the first engine support portion S1 using the fixing member 50 such as a bolt in the above-described procedure.

  Next, the vehicle width in the vehicle width direction inner end surface 56a of the boss portion 56 of the design component 30 is brought into contact with the vehicle width direction outer end surface 38a of the end wall 38 of the attachment auxiliary member 32 through the washer 85. Bolts 86 are inserted into the bolt insertion holes 58 of the design component 30 from the outside in the direction, and tightened into the screw holes 52 that are the attachment portions of the attachment auxiliary member 32. Thereby, the washer 85 and the boss portion 56 of the design component 30 are sandwiched between the head portion 86a of the bolt 86 and the end wall 38, and the design component 30 is attached to the first engine support portion S1. Finally, the cover member 64 shown in FIG. 4 is attached to the design component 30 by the above-described procedure.

  As described above, the design component 30 can be attached without operating any parts of the existing motorcycle. Therefore, the design component 30 can be easily attached. In addition, since existing parts are not loosened or removed, errors in bolt tightening torque of parts and parts related to the attachment and human errors such as forgetting to attach parts do not occur.

  According to the above configuration, the attachment auxiliary member 32 is attached to the strong frame portion to which the engine E is attached, so that the attachment auxiliary member 32 can be firmly supported. Therefore, the design component 30 can be stably attached to the vehicle body frame FR. In addition, since the existing first engine support portion S1 for engine mounting is used as an attachment portion for the design component 30, there is no need to separately provide an attachment portion dedicated to the design component 30 in the vehicle body frame FR. As a result, an increase in the weight of the body frame FR can be suppressed. In this way, since there is no need to provide a separate mounting portion, the number of parts can be reduced. As a result, the attachment work of the accessory parts is simplified, and the cost for attaching the accessory parts can be reduced.

  As shown in FIG. 5, the attachment portion 52 is disposed on the outer side in the vehicle width direction with respect to the outer end of the first engine support portion S1. As a result, even if the attachment portion 52 cannot be provided in the space because the space in the recess 34 is narrow, the attachment portion 52 is disposed outside the recess 34 by the attachment auxiliary member 32. be able to. In particular, in the first engine support portion S1 on the right side, the adjuster member 72 is disposed in the recess 34, and it is difficult to secure a space for disposing the component mounting portion in the recess 34. By disposing the attachment portion 52 outside the 1 engine support portion S1, the design component 30 can be attached to the first engine support portion S1 without increasing the size of the first engine support portion S1. . Moreover, since the attachment part 52 can be accessed from the vehicle width direction outer side, the attachment of the design component 30 to the attachment part 52 becomes easy.

  The operation portion 35 of the first fastening member F1 is exposed in the recess 34 shown in FIG. 4, and the attachment auxiliary member 32 is formed with a body portion 36 inserted into the recess 34 and an attachment portion 52. And an end wall 38. As a result, the attachment assisting member 32 is attached so as to cover the operation portion 35 of the first fastening member F1 exposed to the outside, so that the exposure of the operation portion 35 is suppressed and the design freedom for the appearance of the operation portion 35 is free. The degree is improved.

  As shown in FIG. 5, the operation part 35 of the 1st fastening member F1 is arrange | positioned inside the cylindrical trunk | drum 36, and the operation part 35 of the end wall 38 and the 1st fastening member F1 is the axis | shaft of the 1st fastening member F1. It arrange | positions facing the heart direction AX. Thereby, the attachment assisting member 32 can be attached to the first engine support portion S1 while preventing interference with the operation portion 35 of the first fastening member F1.

  Further, the mounting auxiliary member 32 is fixed to the first engine support portion S1 by a fixing member 50 that is fastened in a direction orthogonal to the axial direction AX of the first fastening member F1. Thereby, since the fixing member 50 is fastened from the direction orthogonal to the axial direction AX of the first fastening member F1, that is, the radial direction of the first fastening member F1, the first mounting auxiliary member 32 is fixed to the fastening member F1 or the fastening member F1. It is difficult to interfere with the member 50 for use, and the attachment auxiliary member 32 can be easily fixed. Moreover, since the fixing member 50 is orthogonal to the first fastening member F1, the attachment assisting member 32 can be firmly fixed without being affected by the rotation of the first fastening member F1.

  Since the attachment portion 52 of the attachment auxiliary member 32 has a screw hole, the design component 30 can be attached to the attachment portion 52 using a bolt 86. Therefore, attachment of the design component 30 is easy. Further, a cover member 64 is attached to the outer side of the design component 30. Therefore, since the bolt 86 can be hidden by the cover member 64, the aesthetic appearance of the vehicle is improved.

  Further, an O-ring 40 is disposed between the outer peripheral surface of the attachment auxiliary member 32 and the inner peripheral surface of the cylindrical pipe 26 of the first fastening member F1. As a result, rattling of the auxiliary mounting member 32 is absorbed, and it is easy to prevent intrusion of foreign matters such as rainwater, water during car washing, and dust from the gap between the auxiliary mounting member 32 and the first fastening member F1. .

  The present invention is not limited to the above-described embodiment, and various additions, modifications, or deletions can be made without departing from the gist of the present invention. In the above-described embodiment, the design component 30 is used as an accessory component. However, the design component 30 is not limited to this. For example, a frame slider that is a kind of a protective device that contacts the road surface when the vehicle body is excessively inclined, the first fastening member F1. Included parts include decorative parts that prevent the outer parts from being exposed to the outside, bosses for attaching parts (for example, cowlings) that are standard equipment on vehicles. Moreover, although the motorcycle has been described in the above embodiment, the present invention is also applicable to straddle-type vehicles other than motorcycles, such as a tricycle, a four-wheel buggy (ATV), and the like. Furthermore, in the said embodiment, although the engine E was used as a drive source, an electric motor may be sufficient. Therefore, such a thing is also included in the scope of the present invention.

30 Design parts (accessory parts)
32 Attachment auxiliary member 34 Recess 35 Operation portion 36 of first fastening member Body portion 38 End wall 42 O-ring (elastic member)
50 bolt (fixing member)
52 Mounting part (screw hole)
64 Cover member E Engine (drive source)
F1 first fastening member FR body frame M1 first mount portion S1 first engine support portion (drive source support portion)

Claims (9)

A frame structure in which a mount portion of a drive source is coupled to a drive source support portion for a drive source mount provided on a body frame of the saddle riding type vehicle by a fastening member,
The drive source support has a recess that opens outward,
A straddle-type vehicle frame structure in which an attachment auxiliary member having an attachment part for an accessory is attached to the recess.   The frame structure of the straddle-type vehicle according to claim 1, wherein the attachment portion is disposed on the outer side in the vehicle width direction with respect to the outer end of the drive source support portion. The frame structure according to claim 1 or 2, wherein the operation portion of the fastening member is exposed in the recess,
The attachment auxiliary member is a frame structure of a saddle-ride type vehicle having a body portion inserted into the recess and an end wall in which the attachment portion is formed.   The frame structure according to claim 3, wherein the attachment portion is disposed to face the operation portion and the fastening member in the axial direction.   5. The frame structure according to claim 1, wherein the attachment auxiliary member is fixed to the drive source support portion by a fixing member that is fastened in a direction orthogonal to an axial direction of the fastening member. The straddle-type vehicle frame structure.   The frame structure according to any one of claims 1 to 5, wherein the attachment portion of the attachment auxiliary member includes a screw hole.   The frame structure according to claim 6, wherein a cover member is attached to an outer side of the accessory part.   The straddle-type vehicle according to any one of claims 1 to 7, wherein an elastic member is disposed between an outer peripheral surface of the attachment auxiliary member and an inner peripheral surface of the drive source support portion. Frame structure. A mounting structure for attachments to a body frame of a saddle riding type vehicle,
A drive source mount portion is connected to a drive source support portion for a drive source mount provided on the vehicle body frame by a fastening member,
The drive source support has a recess that opens outward,
In the recess, an attachment auxiliary member having an attachment part of the accessory part is attached,
The mounting portion is disposed on the outer side in the vehicle width direction than the outer end of the drive source support portion,
The operation portion of the fastening member is exposed in the recess,
A mounting structure for an accessory part of a straddle-type vehicle, wherein the mounting auxiliary member is disposed so as to face the operation portion and the fastening member in the axial direction.

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