JPWO2018221223A1 - Separate handle - Google Patents

Abstract

(EN) A separate handle for a vehicle, which has a structure that can be reduced in weight without increasing the size of the vehicle. The right handle 23 includes a tubular portion 33, a right handlebar portion 25, and a handlebar connecting portion 34. The tubular portion 33 has at least one slit portion 32 that divides the tubular portion 33 in the circumferential direction and allows elastic deformation of the tubular portion 33 in the circumferential direction so that the tubular portion can be fixed to the steering shaft. A plurality of fiber sheets are laminated in the radial direction so as to have higher strength in the circumferential direction than in the axial direction. The handlebar connecting portion 34 is a state in which a plurality of fiber sheets are stacked in a direction perpendicular to an imaginary line 40 connecting a portion to which the right handlebar portion 25 is connected and a portion to which the tubular portion 33 is connected. , Including a fiber reinforced resin bound by a resin.

Description

  The present invention relates to a separate handle for a vehicle.

  As a handle support structure for supporting a separate handle, a structure in which a handle bar is supported by a handle holder fitted to a front fork is known. Specifically, as such a handle support structure, a handle holder is formed so as to be elastically deformable by a split groove, a hold portion for holding a handle bar, and the hold portion is connected to the base portion. A configuration including a plurality of arms is known (Patent Document 1). In this configuration, the plurality of arms are arranged apart from each other in the circumferential direction of the base.

  In the configuration disclosed in Patent Literature 1, the plurality of arms support the handlebar via the hold portion, so that the rigidity of the base portion can be kept low. Thereby, elastic deformation of the portion around the split groove in the base portion is allowed. Therefore, the handle portion is fastened to the outer peripheral portion of the front fork by the base portion being elastically deformed by the fastening force of the fastening member.

JP 2012-76484 A

  By the way, in the handlebar support structure of the vehicle disclosed in Patent Document 1, metal is used for the base portion (tube portion). Therefore, the weight of the vehicle body provided with the separate handle (separate handle) is heavy. On the other hand, there is a demand to reduce the weight of the vehicle body.

  SUMMARY OF THE INVENTION It is an object of the present invention to obtain a configuration that can reduce the weight of a separate handle of a vehicle.

  The present inventors have studied in detail a conventional handle support structure as disclosed in Patent Document 1.

  In the conventional handle support structure disclosed in Patent Document 1, metal is used for the cylindrical portion. Therefore, when trying to increase the rigidity of the handle support structure, the handle support structure is less likely to undergo elastic deformation. Further, if it is attempted to ensure sufficient strength while forming the handle support structure with resin, the handle support structure becomes large. Therefore, the size of the vehicle increases.

  In order to reduce the weight of the vehicle body without increasing the size of the vehicle, the following method can be considered. For example, it is conceivable to employ a fiber reinforced resin for the tubular portion of the handle support structure by utilizing the characteristics of the fiber reinforced resin.

  In the above-described handle support structure, the cylindrical portion is fixed to the outer peripheral portion of the front fork in an elastically deformed state. Therefore, a tensile stress (tensile stress) is always applied to the cylindrical portion in the circumferential direction.

  Further, in the handle support structure, for example, when an input of the same phase is applied to the left and right handlebar portions by a brake operation, the cylinder portion is moved in front of or behind the vehicle centering on the hold portion holding the handlebar. A rotating force is applied. Due to such a rotational force, a tensile stress is generated in the cylindrical portion in the circumferential direction. Therefore, the cylindrical portion is required to have strength against tensile stress generated during a brake operation or the like.

  Based on the above-described study results, the present inventors have conceived of the following configuration.

  A separate handle according to one embodiment of the present invention is a separate handle that is directly or indirectly fixed to a steering mechanism of a straddle-type vehicle. The separate handle has a cylindrical shape extending in the axial direction, and is provided with a cylindrical portion fixed directly or indirectly to the steering mechanism in a state where the shaft portion of the steering mechanism is inserted, and a grip portion. Handlebar portion, a handlebar mounting portion to which one end of the handlebar portion in the longitudinal direction is connected, and a handlebar connecting portion connecting the tubular portion and the handlebar mounting portion. (A handlebar connecting portion). The tubular portion and the handlebar connecting portion include a plurality of fiber sheets joined by a resin in a stacked state, and the tubular portion divides the tubular portion in a circumferential direction and steers the tubular portion. It has at least one slit portion that allows elastic deformation in the circumferential direction of the cylindrical portion so that it can be fixed to the shaft portion of the mechanism. The cylindrical portion is made of a fiber reinforced resin in which the plurality of fiber sheets are laminated in a radial direction so as to have higher strength in the circumferential direction than in the axial direction, and are joined by a resin. The handlebar connection portion, in a state where the plurality of fiber sheets are stacked in a direction perpendicular to an imaginary line connecting a portion where the handlebar portion is connected and a portion where the cylinder portion is connected, Includes fiber reinforced resin bonded by resin.

  As described above, by stacking a plurality of fiber sheets containing fibers in the radial direction of the tubular portion in the tubular portion of the separate handle, the circumferential strength of the tubular portion can be improved.

  Further, in a handlebar connecting portion connecting the tubular portion and the handlebar portion, the fibers are arranged in a direction perpendicular to an imaginary line connecting a portion where the handlebar portion is connected and a portion where the tubular portion is connected. By laminating the sheets, the strength in the direction in which the imaginary line extends can be improved. When a force is applied to the handlebar portion at the handlebar connection portion, a bending stress is generated at the handlebar connection portion. By stacking the fiber sheets in the handlebar connecting portion as described above, the strength of the handlebar connecting portion in the bending direction can be improved.

  Therefore, the tubular portion is made of a metal material while securing the strength of the separate handle against bending stress generated in the handlebar connecting portion around the handlebar mounting portion due to input of force to the handlebar portion. The weight of the separate handle can be reduced as compared with the conventional configuration.

  In the separate handle according to one embodiment of the present invention, the cylindrical portion projects from the outer peripheral surface of the cylindrical main body to the right and left of the cylindrical main body and the slit in the circumferential direction. And a pair of fastening portions. One of the pair of fastening portions may have a member to be fastened that can be fastened to the fastening member. The member to be fastened may be coupled to the tubular portion by a resin while being wound by a plurality of fiber sheets included in the fiber reinforced resin constituting the tubular portion.

  As described above, since one of the pair of fastening portions in the tubular portion includes the member to be fastened, the fastening surface is creeped when the pair of fastening portions is fastened by the fastening member. A decrease in force can be prevented.

  That is, since the tubular portion is formed of the fiber reinforced resin in which the fiber sheet is bonded by the resin, when the pair of fastening portions in the tubular portion are fastened by the fastening member, the fastening surface of the fastening portion may creep. There is. On the other hand, as described above, by providing the member to be fastened to one of the pair of fastening portions, when the fastening member is fastened to the member to be fastened, the fastening surface is prevented from creeping. it can.

  Accordingly, it is possible to prevent a decrease in fastening force when the pair of fastening portions are fastened by the fastening member.

  Further, in the state where the member to be fastened is wound by a plurality of fiber sheets included in the fiber reinforced resin constituting the tubular portion, the member is coupled to the tubular portion by a resin, so that the pair of fastening portions and The strength of the connection portion with the tube main body can be improved. Thereby, when the fastening member is fastened to the member to be fastened, it is possible to prevent the structure of the connection portion from being changed by the stress generated at the connection portion between the pair of fastening portions and the cylinder body. .

  In the separate handle according to one embodiment of the present invention, the handlebar connecting portion may protrude from the cylindrical portion in the axial direction.

  As described above, in the separate handle fixed to the steering shaft by the cylindrical portion, the handlebar connecting portion is projected in the axial direction from the cylindrical portion, so that the degree of freedom in designing the position of the grip portion can be increased. .

  In the separate handle according to one embodiment of the present invention, the handlebar connecting portion may be solid.

  By making the inside of the handlebar connecting portion solid, the rigidity of the handlebar connecting portion can be increased.

  In the separate handle according to one embodiment of the present invention, the handlebar connecting portion may be hollow.

  By making the inside of the handlebar connecting portion hollow in this way, it is possible to reduce the weight of the separate handle in comparison with the configuration in which the handlebar connecting portion is formed solid.

  In the separate handle according to one embodiment of the present invention, the handlebar connecting portion may have a polyhedral structure or a foam structure inside.

  Since the handlebar connecting portion has the polyhedral structure or the foam structure inside, it is possible to reduce the weight of the handlebar while securing the rigidity of the handlebar connecting portion.

  In the separate handle according to one embodiment of the present invention, the handlebar portion may be separate from the handlebar connecting portion.

  In the separate handle according to one embodiment of the present invention, the handlebar portion may be integral with the handlebar connecting portion.

  In the separate handle according to one embodiment of the present invention, at least a part of the handlebar portion may be solid at a mounting position of a mounting component with respect to the handlebar portion.

  In this manner, by making at least a part of the handlebar portion solid at the attachment position of the attachment component of the handlebar portion, the strength of the handlebar portion at the attachment position can be increased.

  In the separate handle according to one embodiment of the present invention, at least a part of the handlebar portion may be hollow at a position other than a position where a mounting component is attached to the handlebar portion.

  As described above, at least a part of the handlebar portion is hollow at a portion other than the attachment position of the attachment component of the handlebar portion, so that the strength of the handlebar portion at the attachment position is ensured, and the separate handle is provided. Can be reduced in weight.

  In the separate handle according to one embodiment of the present invention, the plurality of fibrous sheets joined by a resin in the stacked state may include a fiber composed of any of carbon, glass resin, and aramid.

  Thereby, the weight of the separate handle can be reduced as compared with the conventional configuration in which the cylindrical portion is formed of a metal material while securing the strength of the separate handle. Further, by using aramid fibers as the fiber sheet, it is possible to more reliably prevent the separation handle from being broken at least partially.

  The terminology used herein is used for the purpose of defining particular embodiments only, and is not intended to limit the invention by the terminology.

  The term “and / or” as used herein includes all combinations of one or more of the associated listed components.

  As used herein, the use of the terms "including," "comprising," or "having," and variations thereof, refers to the recited features, steps, elements, components and / or Or the existence of their equivalents, but may include one or more of steps, actions, elements, components, and / or groups thereof.

  As used herein, the terms “attached,” “connected,” “coupled,” and / or their equivalents are used in a broad sense and refer to “direct and indirect” Includes both mounting, connecting and coupling. Further, "connected" and "coupled" are not restricted to physical or mechanical connections or couplings, but can include direct or indirect connections or couplings.

  Unless defined otherwise, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

  Terms defined in commonly used dictionaries should be construed to have a meaning consistent with the meaning in the context of the relevant art and this disclosure, and unless explicitly defined herein. Is not to be construed in an ideal or overly formal sense.

  It is understood that in describing the present invention, a number of techniques and steps are disclosed. Each of these has distinct benefits and can be used with one or more, or even all, of the other disclosed techniques.

  Therefore, for the sake of clarity, the description of the present invention will refrain from repeating all possible combinations of the individual steps unnecessarily.

  However, the specification and claims should be read with the understanding that all such combinations are within the scope of the invention.

  In this specification, an embodiment of a separate handle will be described.

  In the following description, numerous specific examples are set forth to provide a thorough understanding of the present invention. However, it will be apparent to one skilled in the art that the present invention may be practiced without these specific examples.

  Accordingly, the following disclosure is to be considered as illustrative of the present invention, and is not intended to limit the present invention to the particular embodiments illustrated by the following drawings or description.

[Definition of straddle-type vehicle]
In the present specification, a straddle-type vehicle is a vehicle in which an occupant sits on a seat with the occupant straddling the seat. Therefore, the saddle-ride type vehicle includes not only two-wheeled vehicles but also other vehicles such as three-wheeled vehicles and four-wheeled vehicles as long as the occupant sits on the seat with the passenger straddling the seat. The saddle-ride type vehicle also includes a scooter type vehicle.

[Definition of one end and other end of handlebar]
When the handlebar is bisected at the center in the longitudinal direction, one longitudinal end of the handlebar is one end, and the other longitudinal end of the handlebar is the other end.

[Definition of support directly or indirectly to steering mechanism]
In this specification, directly or indirectly supporting the steering mechanism means not only the case where the steering mechanism is directly connected or connected, but also the case where the steering mechanism is connected to the steering mechanism via another member. Or the case where they are connected is included.

[Definition of creep]
Normally, when a certain load is applied to an object, the deformation of the object stops at a point where the object does not deform any more. However, when a certain load is further applied to the object, the deformation of the object may gradually progress with time. In the present specification, such a phenomenon is referred to as creep. It is known that creep occurs at room temperature in the case of resin.

  ADVANTAGE OF THE INVENTION According to the separate handle which concerns on one Embodiment of this invention, the structure which can achieve weight reduction is obtained.

FIG. 1 is a left side view showing a schematic configuration of a motorcycle provided with a separate handle according to one embodiment of the present invention. FIG. 2 is a plan view showing a schematic configuration of a motorcycle provided with a separate handle according to one embodiment of the present invention. FIG. 3 is a schematic diagram illustrating a schematic configuration of the left handle unit according to the first embodiment. FIG. 4 is a schematic diagram illustrating a schematic configuration of the right handle unit according to the first embodiment. FIG. 5 is a perspective view of the separate handle according to the first embodiment as viewed from above and behind the vehicle body. FIG. 6 is a perspective view of the state in which the separate handle according to the first embodiment is attached to the front fork, as viewed from above and from behind. FIG. 7 is a perspective view of the separate handle according to the second embodiment as viewed from above and behind the vehicle body. FIG. 8 is an end view taken along line VIII-VIII in FIG. FIG. 9 is a schematic view of a state in which the separate handle according to the third embodiment is attached to a front fork, as viewed from the rear of the vehicle body. FIG. 10 is a diagram showing a schematic configuration of a vehicle and a separate handle, and a schematic configuration of a fastening portion of the separate handle, respectively.

  Hereinafter, each embodiment will be described with reference to the drawings. In the respective drawings, the same portions are denoted by the same reference characters, and description of the same portions will not be repeated. It should be noted that the dimensions of the components in the drawings do not accurately represent the dimensions of the actual components, the dimensional ratios of the respective components, and the like.

  Hereinafter, the arrow F in the figure indicates the forward direction of the vehicle. Arrow U in the figure indicates the upward direction of the vehicle. The arrow R in the figure indicates the right direction of the vehicle. Arrow L in the figure indicates the left direction of the vehicle. The front, rear, left, and right directions mean, respectively, the front, rear, left, and right directions as viewed from the occupant driving the vehicle.

(Embodiment 1)
<Overall configuration>
FIG. 1 is a left side view schematically illustrating an overall configuration of a vehicle 1 according to the first embodiment. FIG. 2 is a plan view showing a schematic configuration of the vehicle 1. As shown in FIGS. 1 and 2, the vehicle 1 is a straddle-type vehicle such as a motorcycle, for example, and includes a vehicle body 2, front wheels 3, and rear wheels 4. The vehicle 1 of the present embodiment is, for example, an inclined vehicle that turns in an inclined posture. That is, the vehicle 1 leans to the left when turning to the left, and leans to the right when turning to the right.

  The vehicle body 2 includes a main frame 5, a head pipe 6, a swing arm 7, a seat 8, and a footrest 9.

  The head pipe 6 is provided at a front end of the main frame 5. A pair of front forks 10 (shafts) is rotatably supported by the head pipe 6 via a steering shaft (not shown). A front wheel 3 is rotatably attached to lower ends of the pair of front forks 10. A left steering unit 20 and a right steering unit 21 for steering are supported on the upper ends of the pair of front forks 10, respectively. Note that at least a part of the steering mechanism S is constituted by the head pipe 6, the steering shaft, and the pair of front forks 10.

  The swing arm 7 is rotatably attached to a rear portion of the main frame 5. The rear wheel 4 is rotatably attached to the rear end of the swing arm 7.

  The seat 8 is provided at an upper portion of a central portion of the vehicle 1 in the front-rear direction. The footrest 9 is provided at a lower portion of a central portion in the front-rear direction of the vehicle 1. The rider sits on the seat 8 and holds the left handle unit 20 and the right handle unit 21 with the foot on the footrest 9. This allows the rider to steer the vehicle 1.

  The pair of front forks 10 includes a pair of left and right cylindrical outer tubes 11 and 12 and cylindrical inner tubes 13 and 14. In the front fork 10, the outer tubes 11, 12 are located at the lower part, and the inner tubes 13, 14 are located at the upper part. A left handle holder 26 of the left handle unit 20 and a right handle holder 27 of the right handle unit 21 are fixed to upper ends of the inner tubes 13 and 14, respectively.

<Left handle unit>
FIG. 3 is a diagram showing a schematic configuration of the left handle unit 20. FIG. 3 is a view of the left handle unit 20 as viewed from above the vehicle 1. As shown in FIG. 3, the left handle unit 20 includes a left handle 22, a clutch lever 50, a bracket 51, a left switch box 52, and a grip 53.

  The left handle 22 is a separate handle separated from a right handle 23 described later. That is, the left handle 22 is fixed to the upper end of the inner tube 13 of the front fork 10 independently of the right handle 23.

  The left handle 22 has a left handle bar 24 (handle bar) and a left handle holder 26. The left handlebar portion 24 and the left handle holder 26 are formed integrally.

  One end (right end) of the left handle bar portion 24 in the longitudinal direction is connected to the left handle holder 26. That is, the left handlebar portion 24 extends leftward from the left handlebar holder 26.

  The left handle holder 26 is formed in an annular shape. The left handle holder 26 is fixed to the upper end of the front fork 10 with the upper end of the inner tube 13 of the front fork 10 penetrating therethrough. Thus, the left handle 22 is fixed to the upper end of the inner tube 13 of the front fork 10.

  The left handle 22 has the same configuration as that of the right handle 23 described later, except that the left and right sides are reversed.

  A bracket 51 and a left switch box 52 are attached to the left handlebar portion 24. The clutch lever 50 is rotatably attached to the left handle 22 via a bracket 51. That is, the left handle 22 supports the clutch lever 50, the bracket 51, and the left switch box 52.

  The bracket 51, the left switch box 52, and the grip 53 are attachment parts of the left handle 22.

<Right handle unit>
FIG. 4 is a diagram showing a schematic configuration of the right handle unit 21. FIG. 4 is a view of the right handle unit 21 as viewed from above the vehicle 1. As shown in FIG. 4, the right handle unit 21 has a right handle 23, a brake lever 55, a brake master cylinder 56, a right switch box 57, a throttle case 58, and a grip portion 59.

  The right handle 23 is a separate handle separated from the left handle 22. That is, the right handle 23 is fixed to the upper end of the inner tube 14 of the front fork 10 independently of the left handle 22.

  The right handle 23 has a right handle bar 25 (handle bar) and a right handle holder 27. The right handle bar portion 25 and the right handle holder 27 are formed integrally.

  One end (left end) of the right handle bar portion 25 in the longitudinal direction is connected to the right handle holder 27. That is, the right handle bar portion 25 extends rightward from the right handle holder 27.

  The right handle holder 27 is formed in an annular shape. The right handle holder 27 is fixed to the upper end of the front fork 10 with the upper end of the inner tube 14 penetrating therethrough. Thus, the right handle 23 is fixed to the upper end of the inner tube 14 of the front fork 10, as shown in FIG.

  The detailed configuration of the right handle 23 will be described later. Note that the right handle 23 has the same configuration as the left handle 22 except that the left and right sides are reversed.

  As shown in FIG. 4, a brake master cylinder 56, a right switch box 57, and a throttle case 58 are attached to the right handle bar portion 25. The brake lever 55 is rotatably attached to the right handlebar 23 via a brake master cylinder 56. That is, the right handle 23 supports the brake lever 55, the brake master cylinder 56, the right switch box 57, and the throttle case 58.

  The brake master cylinder 56, the right switch box 57, the throttle case 58, and the grip portion 59 are mounting components in the right handle 23.

<Separate handle>
FIG. 5 is a perspective view of the right handlebar 23 (separate handlebar) as viewed from above and behind the vehicle body. Note that, as described above, the left handle 22 and the right handle 23 have the same configuration except that the configuration is reversed left and right. Therefore, only the right handle 23 will be described below.

  As shown in FIG. 5, the right handle 23 has a right handle bar 25 and a right handle holder 27. In the right handle bar portion 25 and the right handle holder 27, a fiber sheet containing carbon fibers is made of a resin (for example, epoxy resin, vinyl ester, phenol resin, polyamide, polypropylene, polyphenylene sulfide, etc. The same applies to the resin in the following description). Formed integrally with carbon fiber reinforced resin reinforced by The fiber sheet means a member formed in a sheet shape (flat shape) by knitting or hardening fibers, for example.

<Handle bar>
The right handlebar 25 is a cylindrical member. The right handle bar portion 25 extends rightward from the right handle holder 27. That is, the right handle bar 25 has a left end, which is one end in the longitudinal direction, connected to the right handle holder 27.

  The right handlebar portion 25 is joined by resin in a state where fiber sheets containing carbon fibers are laminated in the radial direction. That is, the right handlebar portion 25 is made of a carbon fiber reinforced resin in which the resin is reinforced with carbon fibers.

  A brake master cylinder 56, a right switch box 57, a throttle case 58, and a grip portion 59 are mounted on the outer peripheral surface of the right handle bar portion 25. More specifically, the right portion of the right handlebar portion 25 relative to the longitudinal center portion is covered by the grip portion 59. A brake master cylinder 56, a right switch box 57, and a throttle case 58 are attached to a position closer to the right handle holder 27 than a longitudinal center portion of the right handle bar portion 25.

As described above, by stacking the fiber sheets in the right handle bar portion 25 in the radial direction, the weight of each component attached to the right handle bar portion 25 and the force input to the right handle bar portion 25 are reduced. The strength of the right handlebar portion 25 can be secured.
<Handle holder>
The right handle holder 27 is an annular member. As shown in FIG. 6, the right handle holder 27 is fixed to the upper end of the front fork 10 in a state where the upper end of the inner tube 14 of the front fork 10 penetrates a tubular portion 33 described later.

  More specifically, as shown in FIG. 5, the right handle holder 27 includes a hold portion 31 (handle bar attachment portion), a tube portion 33, and a handle bar connecting portion 34.

  In the present embodiment, the cylindrical portion 33 includes a cylindrical cylindrical main body portion 35 extending in the cylindrical axial direction (axial direction), and a pair of fastening portions 36 and 37 protruding radially outward from the cylindrical main body portion 35. Having. The slit portion 32 extending in the cylinder axis direction is provided at at least one location (one location in the present embodiment) in the circumferential direction of the cylinder main body 35. The slit portion 32 extends from one end of the cylinder main body 35 in the cylinder axis direction to the other end. Thereby, the cylinder main body 35 is divided in the circumferential direction by the slit 32. In the cylinder main body 35, circumferential ends facing the slit portion 32 are circumferential ends 33a and 33b. That is, the slit 32 is formed between the pair of circumferential ends 33a and 33b.

  The pair of fastening portions 36 and 37 are provided at the pair of circumferential ends 33a and 33b, respectively, so as to protrude outward in the radial direction of the cylinder main body 35. That is, the cylindrical portion 33 has a pair of fastening portions 36 and 37 provided in the circumferential direction on the left and right sides of the slit portion 32. The pair of fastening portions 36 and 37 are formed integrally with the cylinder main body 35.

  As shown in FIG. 8, one of the pair of fastening portions 36, 37 has a cylindrical nut 38 (member to be fastened) inside. The nut 38 is disposed in one of the fastening portions 36 so that the axis extends in a direction tangent to the outer peripheral surface of the cylinder main body 35 when the cylinder main body 35 is viewed from the cylinder axis direction. That is, the axis of the nut 38 extends in the direction in which the pair of fastening portions 36 and 37 are arranged on the outer peripheral surface of the cylinder main body 35.

  The other fastening portion 37 of the pair of fastening portions 36 and 37 has a through hole 37a. The through-hole 37 a penetrates the other fastening portion 37 in a direction tangent to the outer peripheral surface of the cylinder main body 35 when the cylinder main body 35 is viewed from the cylinder axis direction. That is, the axis of the through hole 37a extends in the tangential direction.

  The nut 38 and the through hole 37a are provided on the pair of fastening portions 36 and 37 such that their axes are aligned.

  In the above-described configuration, the bolt 39 (fastening member) that has passed through the through hole 37 a of the other fastening portion 37 of the pair of fastening portions 36 and 37 is fastened to the nut 38 provided on the one fastening portion 36. Thereby, the pair of fastening portions 36 and 37 can be connected. The pair of fastening portions 36 and 37 are connected with the upper end portion of the inner tube 14 of the front fork 10 penetrating the cylinder main body 35. Thereby, the right handle holder 27 can be fixed to the upper end of the inner tube 14.

  By connecting the pair of fastening portions 36 and 37 as described above, the circumferential ends 33a and 33b of the cylinder main body 35 can be brought closer to each other as compared with a case where the pair of fastening portions 36 and 37 are not connected. . Thereby, a tensile stress is generated in the cylindrical portion 33 in the circumferential direction.

  Further, when the pair of fastening portions 36 and 37 are connected by the bolt 39 as described above, the pair of fastening portions 36 and 37 are bent and deformed so that the tips are in close contact. For this reason, bending stress is generated at the base ends of the pair of fastening portions 36 and 37. That is, a tensile stress is generated at the base ends of the pair of fastening portions 36 and 37.

  The cylinder main body 35 is joined by resin in a state where fiber sheets containing carbon fibers are laminated in the radial direction. That is, the cylinder main body 35 is made of a carbon fiber reinforced resin in which the resin is reinforced with carbon fibers.

  As described above, by laminating the fiber sheets in the cylinder main body 35 in the radial direction, the circumferential strength of the cylinder main body 35 can be improved. Thereby, the strength of the cylinder main body 35 can be secured against tensile stress generated in the cylinder main body 35 in the circumferential direction when the pair of fastening portions 36 and 37 are connected.

  In the pair of fastening portions 36 and 37, the fiber sheets including the carbon fibers are bonded by resin in a state where the fiber sheets are laminated from inside to outside. That is, the pair of fastening portions 36 and 37 are each made of a carbon fiber reinforced resin in which the resin is reinforced with carbon fibers.

  The fiber sheet of the pair of fastening portions 36 and 37 is integrated with the fiber sheet of the cylinder main body 35. That is, the fiber sheet constituting the fiber reinforced resin of the pair of fastening portions 36 and 37 is a part of the fiber sheet constituting the fiber reinforced resin of the tubular portion 33.

  In one fastening portion 36, a fiber sheet is laminated on a nut 38. The nut 38 is joined to the cylinder 33 by resin while being wound by a fiber sheet included in the carbon fiber reinforced resin constituting the cylinder 33. Thereby, the nut 38 can be firmly fixed to the cylindrical portion 33.

  As described above, by integrating the fiber sheet of the pair of fastening portions 36 and 37 and the fiber sheet of the cylinder body 35, the strength of the connection portion between the pair of fastening portions 36 and 37 and the cylinder body 35 is improved. Can be improved. Therefore, the strength of the base end portions of the pair of fastening portions 36 and 37 can be improved. Thereby, when the pair of fastening portions 36 and 37 are connected, the strength of the connection portion is reduced with respect to the tensile stress generated at the connection portion between the base end portion of the pair of fastening portions 36 and 37 and the cylinder body 35. Can be secured.

  The hold portion 31 has a concave portion (not shown) into which one end portion (left end portion) of the right handle bar portion 25 can be inserted. That is, the hold section 31 is configured to be able to hold the columnar right handlebar section 25. The holding portion 31 is provided so that the longitudinal direction of the right handle bar portion 25 coincides with the direction of a tangent to the outer peripheral surface of the cylinder main body 35 when the cylinder main body 35 is viewed from the cylinder axis direction. Support the right handle bar 25. Here, the case where the longitudinal direction of the right handlebar portion 25 coincides with the direction of a tangent line to the outer peripheral surface of the cylinder main body 35 when the cylinder main body 35 is viewed from the cylinder axis direction is not limited to the case where it completely coincides. The case where the angle between the longitudinal direction of the right handlebar portion 25 and the tangent line is 45 degrees or less when the cylinder body 35 is viewed from the cylinder axis direction is also included.

  The hold unit 31 is joined by a resin in a state where fiber sheets including carbon fibers are stacked in a direction perpendicular to the axial direction of the right handle bar unit 25. That is, the hold portion 31 is made of a carbon fiber reinforced resin in which the resin is reinforced with carbon fibers.

  Thereby, the strength of the hold portion 31 can be secured against the stress generated in the hold portion 31 due to the input of the force to the right handle bar portion 25.

  As shown in FIG. 5, the handlebar connecting portion 34 connects the cylindrical portion 33 and the hold portion 31. That is, the handlebar connecting portion 34 protrudes radially outward from the outer peripheral surface of the cylinder main body 35. The handlebar connecting portion 34 is provided such that the hold portion 31 overlaps with the cylinder main body 35 when viewed from the radial direction of the cylinder main body 35 (a direction orthogonal to the cylinder axis).

  The handlebar connecting portion 34 is an imaginary line connecting the fiber sheet including the carbon fiber to the portion where the handlebar connecting portion 34 and the holding portion 31 are connected and the portion where the handlebar connecting portion 34 and the cylinder main body 35 are connected. In a state of being stacked in a direction perpendicular to 40, they are joined by a resin. That is, the handlebar connecting portion 34 is made of a carbon fiber reinforced resin in which the resin is reinforced with carbon fibers. The connected portion means a central portion when the connected portion is viewed from the connecting direction.

  In the present embodiment, the handlebar connecting portion 34 has a so-called solid structure in which the inside is made of carbon fiber reinforced resin.

  As described above, the handlebar connecting portion 34 is made of carbon fiber reinforced resin, so that the strength of the handlebar connecting portion 34 is reduced with respect to the stress generated in the handlebar connecting portion 34 due to the input of the force to the right handlebar portion 25. Can be secured.

  In the present embodiment, the right handle holder 27 is made of carbon fiber reinforced resin in which carbon fibers are reinforced with resin, so that the weight of the vehicle body can be reduced without increasing the size of the vehicle.

  Moreover, since the right handle holder 27 is made of a carbon fiber reinforced resin in which carbon fibers are reinforced by a resin, necessary strength can be secured in each part of the right handle holder 27.

  For example, when an input is applied to the right handlebar portion 25 by a brake operation, a force is applied to the cylinder portion 33 to rotate the vehicle forward or backward around the hold portion 31 that holds the right handlebar portion 25. Due to such a rotational force, a tensile stress is generated in the cylinder main body 35 in the circumferential direction. On the other hand, by laminating fiber sheets containing carbon fibers in the radial direction in the cylinder main body 35, the strength in the circumferential direction can be improved. Therefore, the strength of the cylinder main body 35 can be secured against the tensile stress generated in the cylinder main body 35 during the brake operation.

  Although the configuration of the right handle 23 has been described above, the left handle 22 has the same configuration as the right handle 23 except that the configuration is reversed left and right. Therefore, the same operation and effect as those of the right handle 23 can be obtained by the configuration of the left handle 22.

(Embodiment 2)
FIG. 7 shows a configuration of the right handle 123 according to the second embodiment. FIG. 7 is a perspective view of the right handle 123 as viewed from above and behind the vehicle 1. In the right handle 123 in this embodiment, when viewed from the radial direction of the cylinder main body 35, at least a part of the hold part 131 is located outside of the cylinder main body 35 in the cylinder axis direction, and the handlebar connecting part 134 is The configuration differs from the configuration of the right handle 23 of the first embodiment in that the configuration extends outward in the cylinder axis direction of the cylinder main body 35. In the following, the same components as those of the first embodiment are denoted by the same reference numerals, and description thereof will be omitted. Only different portions from the first embodiment will be described.

  Note that, also in the present embodiment, as in the first embodiment, the right handle and the left handle have the same configuration except that the configuration is reversed left and right. Therefore, only the right handle will be described below.

  The right handle 123 has a right handle bar 25 and a right handle holder 127. The right handle holder 127 includes a tubular portion 33, a hold portion 131, and a handlebar connecting portion 134.

  The holding section 131 has a columnar shape. The holding portion 131 is provided outside the cylinder main body 35 and at a position offset from the cylinder main body 35 in the cylinder axis direction. That is, at least a part of the holding portion 131 is located outside the cylinder main body 35 in the cylinder axis direction when viewed from the radial direction of the cylinder main body 35.

  The holding section 131 is bonded with a resin in a state where fiber sheets containing carbon fibers are stacked in a direction perpendicular to the axial direction of the right handle bar section 25. That is, the hold portion 131 is made of a carbon fiber reinforced resin in which the resin is reinforced with carbon fibers.

  Thereby, the strength of the hold portion 131 can be secured against the stress generated in the hold portion 131 due to the input of the force to the right handlebar portion 25.

  The handlebar connecting portion 134 connects the outer peripheral surface of the cylinder main body 35 to the hold portion 131. Therefore, the handlebar connecting portion 134 protrudes radially outward from the outer peripheral surface of the cylinder main body 35 and extends in the cylinder axis direction of the cylinder main body 35. That is, the handlebar connecting portion 134 extends outward from the tubular portion 33 in the tubular axis direction.

  The handlebar connecting portion 134 is formed by a fiber sheet including carbon fibers, the center of the portion where the handlebar connecting portion 134 and the holding portion 131 are connected and the center of the portion where the handlebar connecting portion 134 and the cylindrical portion 33 are connected. They are connected by a resin in a state of being stacked in a direction perpendicular to the connecting virtual line 140. That is, the handlebar connecting portion 134 is made of a carbon fiber reinforced resin in which the resin is reinforced with carbon fibers. Note that the center of the connected portion is the center when the connected portion is viewed from the connection direction.

  Also in the present embodiment, similarly to the first embodiment, the handlebar connecting portion 134 has a so-called solid structure in which the inside is made of carbon fiber reinforced resin.

  By configuring the handlebar connecting portion 134 with carbon fiber reinforced resin as described above, the strength of the handlebar connecting portion 134 is reduced with respect to the stress generated in the handlebar connecting portion 134 due to the input of a force to the right handlebar portion 25. Can be secured.

  In the present embodiment, the handlebar connecting portion 134 protrudes from the cylinder main body 35 in the cylinder axis direction, so that the degree of freedom in designing the arrangement of the right handle 123 can be increased. Therefore, according to the configuration of the present embodiment, it is possible to increase the degree of freedom in designing the arrangement of the steering wheel while reducing the weight of the vehicle body without increasing the size of the vehicle.

  Although the configuration of the right handle 123 has been described above, the left handle has the same configuration as the right handle 123 except that the configuration is reversed left and right. Therefore, the same operation and effect as those of the right handle 123 can be obtained by the configuration of the left handle.

(Embodiment 3)
FIG. 9 is a schematic diagram of the right handlebar 23 according to the first embodiment as viewed from the rear of the vehicle 1 with the right handlebar 23 attached to the front fork 10. In the present embodiment, the right handle holder 27 is fitted to the front fork 10 below the top bridge 15.

  Note that, also in the present embodiment, as in the first embodiment, the right handle and the left handle have the same configuration except that the configuration is reversed left and right. Therefore, only the right handle will be described below.

  As shown in FIG. 9, by fitting the right handle holder 27 to the front fork 10 below the top bridge 15, the left handle unit and the right The degree of freedom in designing the position of the handle unit can be increased.

(Other embodiments)
The embodiment of the present invention has been described above, but the above-described embodiment is merely an example for implementing the present invention. Therefore, without being limited to the above-described embodiment, the above-described embodiment can be appropriately modified and implemented without departing from the spirit thereof.

  In each of the above embodiments, the vehicle is a motorcycle. However, the vehicle is not limited to a motorcycle, but may be a tricycle or a four-wheeled vehicle. Further, the vehicle is not limited to the leaning vehicle, and may be a vehicle other than the leaning vehicle.

  In each of the above embodiments, the number of the slits provided in the cylindrical portion 33 of the right handle holder 27 is one. However, a plurality of slits may be provided in the cylinder in the circumferential direction.

  In each of the above embodiments, the left handle unit 20 and the right handle unit 21 are attached to the telescopic front fork 10. However, the left handle unit and the right handle unit may be attached to a component other than the front fork, such as a top bridge.

  In each of the embodiments, a so-called upright fork is illustrated as the front fork 10, but the front fork may be a so-called inverted fork.

  The erecting fork is a type of telescopic suspension unit in which an inner tube is located above and an outer tube is located below.

  The inverted fork is a type of telescopic type suspension unit, and is a suspension unit in which an inner tube is located below and an outer tube is located above.

  In each of the above embodiments, a front fork 10 which is a telescopic suspension unit is used as a front tire suspension system. However, instead of the front fork, a link type suspension unit or a swing arm type suspension unit may be used as the front tire suspension system.

  In each of the above embodiments, the right handles 23, 123 and the left handle 22 are made of carbon fiber reinforced resin using carbon fibers. However, in the right handle and the left handle, the right handle bar and the left handle bar may be made of another material such as metal or resin. Further, as the fiber sheet of the fiber reinforced resin used for the right handle and the left handle, fibers other than carbon, for example, aramid, glass, cellulose, and the like may be used. The plurality of fiber sheets used for the fiber reinforced resin may be made of different materials. Further, the resin of the fiber reinforced resin used for the right handle and the left handle may be any type of resin as long as it is a resin capable of binding fibers.

  In the above embodiments, the right handles 23, 123 and the left handle 22 are made of carbon fiber reinforced resin in which the resin is reinforced by a fiber sheet containing carbon fibers. However, the right handle and the left handle may be formed of a fiber reinforced resin using unwoven fibers instead of the fiber sheet. Further, the fibers may be continuous fibers having a predetermined length (for example, 1 mm) or more, or may be discontinuous fibers.

  In the above embodiments, the right handles 23, 123 and the left handle 22 are made of carbon fiber reinforced resin in which the resin is reinforced by a fiber sheet containing carbon fibers. However, the right handle and the left handle may be formed of a composite material in which a carbon fiber reinforced resin layer reinforced by a fiber sheet and a foamed resin layer containing a foamed synthetic resin are laminated in the thickness direction. This composite material has a pair of the carbon fiber reinforced resin layers, and the foamed resin layer is disposed between the carbon fiber reinforced resin layers. By forming the structure using the composite material, it is possible to reduce the weight as compared with the case where the structure is formed using only the carbon fiber reinforced resin layer, and to easily change the thickness of the wall of the structure. it can. Note that a resin capable of absorbing vibration may be used as the synthetic foam resin of the foam resin layer.

  In each of the above embodiments, the handlebar connecting portions 34 and 134 have a solid structure. However, the handlebar connection may have a hollow structure or may include a polyhedral structure. Polyhedral structures generally include honeycomb structures, quadrangular prisms, triangular prisms, weir-ferran structures, truncated octahedral structures, rhombic dodecahedral structures, open-cell structures, and closed-cell structures. It means a two-dimensional or three-dimensional structure such as a body, but is not limited to these examples, and includes a structure having a plurality of surfaces. The foam structure may be an open-cell structure or a closed-cell structure. Further, the material of the polyhedral structure is not limited to the fiber reinforced resin.

  In the above embodiments, the left handlebar portion 24 and the right handlebar portion 25 are configured separately from the handlebar connection portions 34 and 134. However, at least one of the left handlebar portion and the right handlebar portion may be integrally formed with the handlebar connecting portion.

  In each of the above embodiments, the left handlebar portion 24 and the right handlebar portion 25 are hollow cylindrical. However, at least one of the left handlebar portion and the right handlebar portion may be at least partially solid at the attachment position of the attachment component. Thereby, the strength of the handlebar portion at the mounting position can be improved. In addition, at least one of the left handlebar portion and the right handlebar portion may be hollow at least partially except at a position where the mounting component is mounted. Thereby, the weight of the handle can be reduced while securing the strength of the handle bar portion at the mounting position.

1 vehicle (saddle riding type vehicle)
2 Body 5 Main frame 6 Head pipe 10 Front fork (shaft)
11, 12 Outer tubes 13, 14 Inner tubes 15 Top bridge 20 Left handle unit 21 Right handle unit 22 Left handles 23, 123 Right handle 24 Left handle bar portion (handle bar portion)
25 Right handlebar (handlebar)
26 Left handle holder 27, 127 Right handle holder 31, 131 Hold part (handle bar attachment part)
32 Slit part 33 Tube part 34, 134 Handlebar connecting part 35 Tube main body part 36, 37 Fastening part 38 Nut (member to be fastened)
39 bolt (fastening member)
40, 140 Virtual line 50 Clutch lever 51 Bracket (mounting part)
52 Left switch box (mounting parts)
53 Grip part (mounting part)
55 Brake lever 56 Master cylinder (mounting part)
57 Right switch box (mounting parts)
58 Throttle case (mounting parts)
59 Grip part (mounting part)
S steering mechanism

Claims (11)

A separate handle fixed directly or indirectly to a steering mechanism of a saddle type vehicle,
A tubular portion extending in the axial direction, a tubular portion fixed directly or indirectly to the steering mechanism in a state where the shaft portion of the steering mechanism is inserted;
A handlebar part provided with a grip part,
A handlebar attachment portion to which one end in the longitudinal direction of the handlebar portion is connected;
A handlebar connecting portion that connects the cylindrical portion and the handlebar mounting portion,
With
The tubular portion and the handlebar connecting portion include a plurality of fiber sheets joined by a resin in a stacked state,
The tubular portion is
Along with dividing the cylindrical portion in the circumferential direction, the cylindrical portion has at least one slit portion that allows elastic deformation in the circumferential direction of the cylindrical portion so that the cylindrical portion can be fixed to the shaft portion of the steering mechanism,
The plurality of fiber sheets are configured by a fiber reinforced resin joined by a resin in a state of being stacked in a radial direction so as to have higher strength in the circumferential direction than in the axial direction,
The handlebar connection portion,
The plurality of fiber sheets are stacked in a direction perpendicular to an imaginary line connecting a portion where the handlebar portion is connected and a portion where the cylinder portion is connected, and are fiber-reinforced bonded by resin. Separate handle containing resin. The separate handle according to claim 1,
The tubular portion is
A tubular body part,
On the left and right sides of the slit in the circumferential direction, a pair of fastening portions protruding from the outer peripheral surface of the cylindrical body,
Has,
One of the pair of fastening portions has a fastened member that can be fastened to the fastening member,
The separate handle, wherein the member to be fastened is coupled to the tubular portion by a resin while being wound by the plurality of fiber sheets included in the fiber reinforced resin constituting the tubular portion. The separate handle according to claim 1,
The separate handle, wherein the handlebar connecting portion protrudes from the cylindrical portion in the axial direction. The separate handle according to any one of claims 1 to 3,
The handlebar coupling is a solid handle. The separate handle according to any one of claims 1 to 3,
A separate handle, wherein the handlebar connecting portion is hollow. The separate handle according to any one of claims 1 to 3,
A separate handle, wherein the handlebar connecting portion has a polyhedral structure or a foam structure inside. The separate handle according to any one of claims 1 to 6,
A separate handle, wherein the handlebar portion is separate from the handlebar connection portion. The separate handle according to any one of claims 1 to 6,
A separate handle, wherein the handlebar portion is integral with the handlebar connection portion. The separate handle according to any one of claims 1 to 8,
A separate handle, wherein the handlebar portion is at least partially solid at a mounting position of the mounting component with respect to the handlebar portion. The separate handle according to any one of claims 1 to 8,
The separate handle, wherein the handlebar portion is at least partially hollow except at a position where a mounting component is attached to the handlebar portion. The separate handle according to any one of claims 1 to 10,
A separate handle, wherein the plurality of fibrous sheets joined by a resin in the stacked state include fibers made of any of carbon, glass resin, and aramid.

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