JP2018128062A - Bracket supporting structure for front wheel brake in saddle-riding type vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To minimize influence on viscosity of oil in a front fork to enable support of a bracket, in a saddle-riding type vehicle where a brake component constituting a part of a front wheel brake is supported by the bracket.SOLUTION: An axial line C1 of a pair of pipe materials arranged on both sides of a front wheel WF is arranged so as to be offset against an axial line C2 of an axle 11 in any of vehicle front-back directions in a vehicle side view. In a bracket 20, provided are a supported part 21 supported by the axle 11 while arranged on a vehicle width directional inside of one pipe material 14, and first and second contact parts 22, 23 arranged at an interval around the axial line of the axle 11. On an outer periphery of the one pipe material 14L, first and second rotation regulation parts 24, 25 respectively contacting with the first and second contact parts 22, 23 are provided so that the bracket 20 is regulated from rotating around the axial line C2 of the axle 11.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a saddle-ride type vehicle in which a brake component constituting a part of a front wheel brake that brakes a front wheel is supported by a bracket, and more particularly to an improvement in a support structure of a bracket for a front wheel brake.

  The front wheel axle is pivotally supported at the lower end of the pair of pipe members provided on the front fork that suspends the front wheel of the motorcycle, and the lower part of the bracket that supports the caliper of the disc brake for the front wheel is the lower end of one of the pair of pipe members Patent Document 1 discloses a support structure for a front-wheel brake bracket that is inserted and fastened to a portion so that the upper portion of the bracket is brought into contact with the one pipe material.

JP 2006-44642 A

  By the way, the pair of pipe members provided in the front fork are filled with buffer oil. However, in the structure in which the bracket is fastened to the pipe member as disclosed in Patent Document 1, the front wheel brake is used. The heat generated during the operation of the pipe is likely to be transferred from the bracket to the pipe material, affecting the viscosity of the oil in the pipe material, and as a result, the buffer function of the front fork may change.

  The present invention has been made in view of such circumstances, and supports a bracket for a front wheel brake in a saddle-ride type vehicle that can support the bracket so that the influence on the viscosity of oil in the front fork can be suppressed to a small level. The purpose is to provide a structure.

  To achieve the above object, according to the present invention, in a saddle-ride type vehicle in which a brake component constituting a part of a front wheel brake for braking a front wheel is supported by a bracket, a part of a front fork is provided to The axis of the pair of pipe members arranged on both sides of the front wheel in the vehicle width direction passes through a position offset in either the vehicle longitudinal direction with respect to the axis of the axle on a horizontal line passing through the axis of the axle in a side view of the vehicle. The bracket is disposed at the inner side in the vehicle width direction of one of the pair of pipe members while being supported by the axle, and spaced apart around the axis of the axle. A first abutting portion and a second abutting portion provided on the outer periphery of the one pipe member to abut against the first abutting portion to restrict the bracket from rotating to one side around the axis of the axle. Once A regulating portion, and the second that the second rotation restricting portion is provided the first aspect, wherein the bracket to the other side about the axis to restrict the rotation of the contact with the axle abutment.

  In addition to the configuration of the first feature, the present invention is further characterized in that the first rotation restricting portion and the second rotation restricting portion are arranged separately above and below the horizontal line in a vehicle side view. And

  In the present invention, in addition to the configuration of the first or second feature, the first rotation restricting portion and the second rotation restricting portion protrude from the one pipe member to the front wheel side. A third feature is that the pipe member is integrally projected on the outer periphery.

  According to the present invention, in addition to any one of the configurations of the first to third features, the bracket includes an inner plate portion disposed on the inner side in the vehicle width direction of the one pipe member, An outer plate disposed outside the inner plate in the vehicle width direction at a position avoiding an overlap with the pipe member, and the inner plate so as to overlap a part of the one pipe member in a vehicle side view A fourth feature is that the outer plate is integrally formed with a bent plate connecting the outer plates.

  In the present invention, in addition to the configuration of the fourth feature, a support protrusion that pivotally supports the axle is protruded forward in the vehicle front-rear direction on the front wall along the vehicle front-rear direction below the pair of pipe members. Formed, the supported portion is provided at a front end portion of the inner side plate portion along the vehicle front-rear direction, and the brake component member is attached to the outer side plate portion disposed rearward of the inner side plate portion along the vehicle front-rear direction. The fifth characteristic is that

  Furthermore, in addition to the structure of the fifth feature of the present invention, the supported portion is formed by welding a cylindrical collar penetrating the bracket so as to allow the axle to pass through the bracket. A sixth feature is that a thick part that penetrates the bracket and is welded to the bracket and a thin part that is thinner than the thick part are coaxially and integrally connected. To do.

  According to the first feature of the present invention, one pipe passes through the position where the axis of the pair of pipe members constituting a part of the front fork is offset in any of the vehicle longitudinal directions on the horizontal line passing through the axis of the axle. Since the bracket is supported on the axle between the material and the hub, and the bracket abuts the outer periphery of one pipe material at two locations spaced around the axle axis, the rotation of the bracket around the axle axis is restricted. In addition to being able to effectively prevent the bracket from rotating during braking by the front wheel brake, it is possible to suppress the transfer of heat from the bracket to the front fork, suppressing the effect on the viscosity of the oil in the front fork. , Ride comfort is stable.

  Further, according to the second feature of the present invention, the first and second rotation restricting portions provided on the outer periphery of the one pipe member for preventing the rotation of the bracket include a horizontal line passing through the axis of the axle in a side view of the vehicle. Since the upper and lower parts are arranged separately, it is possible to suppress rattling of the bracket and effectively prevent rotation of the bracket.

  According to the third feature of the present invention, since the first and second rotation restricting portions project integrally with one pipe member so as to project to the front wheel side, the bracket is enlarged in the vehicle width direction. While avoiding this, the weight of the bracket can be reduced.

  According to the fourth feature of the present invention, the bracket is located more on the vehicle than the inner plate at a position where the inner plate located on the inner side in the vehicle width direction of the pipe material and the one pipe member is prevented from overlapping in the vehicle side view. Since the outer side plate portion is integrally provided with the outer side plate portion disposed outward in the width direction and the bent plate portion that overlaps a part of the pipe material and connects the inner side plate portion and the outer side plate portion in a side view of the vehicle. It is possible to minimize overhanging from the front fork in the width direction and to make the bracket compact in the vehicle width direction.

  According to the fifth feature of the present invention, since the supported portion is provided at the front end portion of the inner plate portion, and the brake constituent member is attached to the outer plate portion behind the inner plate portion, the front fork inclined upward The bracket can be configured compactly around the.

  Furthermore, according to the sixth aspect of the present invention, a part of the thick wall portion of the cylindrical collar constituting the supported portion passes through the bracket and is welded to the bracket, so that distortion occurs during welding. Can be prevented.

1 is a left side view of a motorcycle. It is a principal part enlarged view of FIG. FIG. 3 is a sectional view taken along line 3-3 in FIG. 2. FIG. 4 is a cross-sectional view taken along line 4-4 of FIG. FIG. 5 is a sectional view taken along line 5-5 of FIG. It is the front view which looked at the bracket from the 6 arrow direction of FIG. FIG. 7 is a cross-sectional view taken along line 7-7 in FIG. 6. It is a disassembled perspective view of a part of front fork and a bracket.

  The embodiment of the present invention will be described with reference to the accompanying FIGS. 1 to 8. First, in FIG. 1, an axle 11 of a front wheel WF of a scooter type motorcycle that is a saddle-ride type vehicle is a lower part of a front fork 12. The front wheel WF is braked by a disc brake 13 which is a front wheel brake.

  2 to 5, a part of the front fork 12 is composed of a pair of left and right pipe members 14L and 14R arranged on both sides of the front wheel WF in the vehicle width direction. The materials 14L and 14R have an axis C1 extending rearwardly.

  Further, the axis C1 of the pair of pipe members 14L and 14R has a position offset in any one of the vehicle longitudinal directions with respect to the axis C2 of the axle 11 on the horizontal line L passing through the axis C2 of the axle 11 in a side view of the vehicle. In this embodiment, the support protrusions 15L and 15R that pivotally support the axle 11 on the front wall along the vehicle front-rear direction below the pair of left and right pipe members 14L and 14R. Projecting forward in the vehicle front-rear direction and formed integrally with each other, and the axis C1 of the pipe members 14L, 14R is offset from the axis C2 of the axle 11 rearward in the vehicle front-rear direction on the horizontal line L in a side view of the vehicle. It is arranged to pass through.

  The brake disc 17 of the disc brake 13 is disposed on the left side in the vehicle width direction of the hub 16 of the front wheel WF, and is fastened to the hub 15 with a plurality of bolts 18. A caliper 19 as a brake constituent member constituting a part of the disc brake 13 is attached to the bracket 20 so as to be slidable along the axis C2 of the axle 11, that is, the axis of the brake disc 17.

  Referring also to FIGS. 6 to 8, the bracket 20 is arranged on the axle 11 while being arranged on the inner side in the vehicle width direction of the left pipe member 14 </ b> L which is one of the pair of pipe members 14 </ b> L and 14 </ b> R. A supported portion 21 to be supported and first and second abutting portions 22 and 23 spaced apart from each other around the axis of the axle 11 are provided, and the first abutting portion is provided on the outer periphery of the left pipe member 14L. A first rotation restricting portion 24 that abuts against the contact portion 22 and restricts rotation of the bracket 20 to one side around the axis of the axle 11, and abuts against the second abutment portion 23 to contact the axle 11. A second rotation restricting portion 25 that restricts the bracket 20 from rotating is provided on the other side around the axis.

  The bracket 20 is located at a position that avoids the overlap between the inner plate portion 20a disposed on the inner side in the vehicle width direction of the left pipe member 14L and the left pipe member 14L in a vehicle side view, than the inner plate portion 20a. An outer plate portion 20b disposed outward in the vehicle width direction, and a bent plate portion connecting the inner plate portion 20a and the outer plate portion 20b so as to overlap a part of the left pipe member 14L in a vehicle side view. And 20c are integrally formed.

  In this embodiment, the supported portion 21 is provided at a front end portion along the vehicle front-rear direction of the inner plate portion 20a, and the outer plate portion 20b is disposed rearward along the vehicle front-rear direction of the inner plate portion 20a. The bent plate portion 20c is formed to be inclined so as to be located outward in the vehicle width direction as it goes rearward along the vehicle longitudinal direction. The caliper 19 is attached to the outer plate portion 20b, and a pair of attachment holes 27 and 28 for attaching the caliper 19 are formed in the outer plate portion 20b.

  The supported portion 21 has a left collar 26 formed in a cylindrical shape so as to pass through the front end portion of the bracket 20, that is, the front end portion of the inner plate portion 20a, so that the axle 11 is inserted. 20, the outer end portion of the left collar 26 along the vehicle width direction is connected to the support projection 15L of the left pipe member 14L from the inside in the vehicle width direction. Abut.

  In addition, the left collar 26 has a thick portion 26a that passes through the front end portion of the bracket 20 and is welded to the bracket 20, and a thin portion 26b that is formed thinner than the thick portion 26a. In addition, it is continuously connected.

  The first rotation restricting portion 24 and the second rotation restricting portion 25 are arranged separately above and below the horizontal line L in a vehicle side view, and the first rotation restricting portion 24 is forward in the vehicle front-rear direction. It is possible to contact the first contact portion 22 formed at the upper end portion of the outer side plate portion 20b of the bracket 20 so as to face, and project from the left pipe member 14L to the front wheel WF side. A second screw formed integrally with the outer periphery of the left pipe member 14L and formed at the lower end portion of the outer plate portion 20b of the bracket 20 so that the second rotation restricting portion 25 faces the front in the vehicle front-rear direction. It is possible to come into contact with the contact portion 23 and project integrally with the outer periphery of the left pipe member 14L so as to protrude from the left pipe member 14L toward the front wheel WF. It is.

  By the way, the axle 11 is a bolt having an enlarged-diameter projection 11a at one end thereof, and the enlarged-diameter head 11a is brought into contact with and engaged with the support projection 15L of the left pipe member 14L from the outside in the vehicle width direction. The axle 11 is inserted into the support protrusion 15L and the supported portion 21 of the bracket 20 and passes through the hub 16 of the front wheel WF.

  A part of the thin portion 26b of the left collar 26 is inserted into the left end of the hub 16 in the vehicle width direction. Further, the inner end of the right collar 31 formed in a cylindrical shape by abutting the outer end in the vehicle width direction against the support protrusion 15R of the right pipe member 14R enters the right end of the hub 16 in the vehicle width direction. A cylindrical spacer 30 surrounding the axle 11 in the hub 16 and a ball bearing 26 disposed between the thin portion 26b are interposed between the hub 16 and the axle 11, and the spacer 30 A ball bearing 27 disposed between the right collar 31 and the right collar 31 is interposed between the hub 16 and the axle 11. An annular sealing member 28 disposed on the outer side in the axial direction of the ball bearing 27 is interposed between the hub 16 and the thin portion 26b of the left side collar 26 so that the outer side of the ball bearing 28 in the axial direction. An annular seal member 29 is disposed between the hub 16 and the right collar 31.

  The axle 11 passing through the hub 16 is inserted into the support collar 15R of the right collar 31 and the right pipe member 14R, and a U-nut is inserted into the projection of the axle 11 from the support projection 15R. A locking nut 32 such as (registered trademark) is screwed together.

  Next, the operation of this embodiment will be described. An axis C1 of a pair of pipe members 14L, 14R that constitutes a part of the front fork 12 and is disposed on both sides of the front wheel WF in the vehicle width direction is an axle in a vehicle side view. 11 is arranged so as to pass through a position offset in the vehicle longitudinal direction with respect to the axis C2 of the axle 11 on the horizontal line L passing through the axis C2 of the axle 11, and the bracket 20 has a left side of the pair of pipe members 14L and 14R. A supported portion 21 supported by the axle 11 while being arranged on the inner side in the vehicle width direction of the pipe material 14L, and first and second abutting portions 22 and 23 spaced around an axis C2 of the axle 11. Is provided on the outer periphery of the left pipe member 14L to abut against the first abutting portion 22 to restrict the bracket 20 from rotating to one side around the axis C2 of the axle 11. Since the first rotation restricting portion 24 and the second rotation restricting portion 25 that contacts the second abutting portion 23 and restricts the bracket 20 from rotating on the other side around the axis C2 of the axle 11 are provided. In addition, it is possible to efficiently prevent the bracket 20 from rotating during braking by the disc brake 13 and to suppress the transfer of heat from the bracket 20 to the front fork 12, and to increase the viscosity of the oil in the front fork 12. The ride will be less affected and the ride will be more stable.

  Further, since the first rotation restricting portion 24 and the second rotation restricting portion 25 are arranged separately above and below the horizontal line L in a side view of the vehicle, the rattling of the bracket 20 is suppressed and the rotation of the bracket 20 is effective. Can be prevented.

  Further, the first rotation restricting portion 24 and the second rotation restricting portion 25 are integrally projected on the outer periphery of the left pipe member 14L so as to protrude from the left pipe member 14L to the front wheel WF side. Therefore, it is possible to reduce the weight of the bracket 20 while avoiding an increase in the size of the bracket 20 in the vehicle width direction.

  Further, the bracket 20 is positioned more than the inner plate portion 20a at a position where the inner plate portion 20a disposed on the inner side in the vehicle width direction of the left pipe member 14L and the left pipe member 14L in the vehicle side view are avoided. And a bent plate that connects the inner plate portion 20a and the outer plate portion 20b so as to overlap a part of the left pipe member 14L in a side view of the vehicle. Since the outer plate portion 20b is formed so as to be integrated with the portion 20c, it is possible to suppress the outer plate portion 20b from projecting outside the front fork 12 in the vehicle width direction as much as possible, and the bracket 20 can be made compact in the vehicle width direction. .

  Further, support protrusions 15L and 15R that pivotally support the axle 11 are integrally formed on the front wall along the vehicle front-rear direction below the pair of pipe members 14L and 14R so as to protrude forward in the vehicle front-rear direction. Since the supported portion 21 is provided at the front end portion along the vehicle front-rear direction of the portion 20a, and the caliper 19 is attached to the outer plate portion 20b disposed behind the inner plate portion 20a along the vehicle front-rear direction. The bracket 20 can be configured compactly around the front fork 12 inclined upward.

  Further, the supported portion 21 is formed by welding a left collar 26 formed in a cylindrical shape so as to pass through the bracket 20 so as to allow the axle 11 to pass therethrough, and the left collar. A thick portion 26a that penetrates the bracket 20 and is welded to the bracket 20 and a thin portion 26b that is formed thinner than the thick portion 26a are coaxially and integrally connected. Therefore, distortion can be prevented from occurring during welding.

  Further, since the left collar 26 constituting a part of the supported portion 21 abuts the support protrusion 15L of the left pipe member 14L from the inside in the vehicle width direction, the support protrusion 15L of the supported portion 21 is supported. As a result, the heat transfer from the bracket 20 to the front fork 12 can be more effectively suppressed.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various design changes can be made without departing from the present invention described in the claims. Is possible.

  For example, in the above-described embodiment, the case where the present invention is applied to a scooter type motorcycle has been described. However, the present invention can be widely applied to motorcycles other than the scooter type and can also be applied to a motor tricycle.

DESCRIPTION OF SYMBOLS 11 ... Axle 12 ... Front fork 13 ... Disc brake 14L which is a front wheel brake ... Left pipe material 14R which is one pipe material ... Pipe materials 15L, 15R ... Support protrusion 19 ... caliper 20 as a brake constituent member ... bracket 20a ... inner plate portion 20b ... outer plate portion 20c ... bent plate portion 21 ... supported portion 22 ... first contact Contact part 23 ... second contact part 24 ... first rotation restricting part 25 ... second rotation restricting part 26 ... collar 26a ... thick part 26b ... thin part C1 ...・ Axis C2 of pipe material ... Axis axis L ... Horizontal line WF ... Front wheel

Claims (6)

  In a saddle-ride type vehicle in which a brake component member (19) constituting a part of a front wheel brake (13) for braking a front wheel (WF) is supported by a bracket (20), a part of a front fork (12) is constituted. Then, the axis (C1) of the pair of pipe members (14L, 14R) disposed on both sides of the front wheel (WF) in the vehicle width direction passes through the axis (C2) of the axle (11) in a side view of the vehicle. ) On the axis (C2) of the axle (11) so as to pass in a position offset in either the vehicle front-rear direction, and the bracket (20) includes the pair of pipe members (14L, 14R). A supported portion (21) supported by the axle (11) while being arranged on the inner side in the vehicle width direction of one of the pipe members (14L), and a first and a spaced apart around the axis of the axle (11) Second contact portion (22 23), and the bracket (on one side around the axis (C2) of the axle (11) in contact with the first contact portion (22) on the outer periphery of the one pipe member (14L). 20) the first rotation restricting portion (24) for restricting the rotation and the bracket (on the other side around the axis (C2) of the axle (11) in contact with the second abutting portion (23). 20) A support structure for a bracket for a front wheel brake in a saddle-ride type vehicle, wherein a second rotation restricting portion (25) for restricting the rotation of the straddle type vehicle is provided.   The said 1st rotation control part (24) and the said 2nd rotation control part (25) are divided | segmented and arrange | positioned up and down of the said horizontal line (L) by vehicle side view, The scissors of Claim 1 characterized by the above-mentioned. Support structure for a front wheel brake bracket in a riding vehicle.   The first rotation restricting portion (24) and the second rotation restricting portion (25) protrude from the one pipe material (14L) to the front wheel (WF) side, and the one pipe material (14L). The support structure for a bracket for a front wheel brake in a saddle-ride type vehicle according to claim 1 or 2, wherein the support structure is integrally projected on the outer periphery of the vehicle.   Position where the bracket (20) avoids overlap between the inner plate (20a) disposed on the inner side in the vehicle width direction of the one pipe member (14L) and the one pipe member (14L) in a vehicle side view. And the outer side plate portion (20b) disposed on the outer side in the vehicle width direction than the inner side plate portion (20a), and the inner side plate so as to overlap a part of the one pipe member (14L) in a side view of the vehicle. 4. The scissors according to claim 1, wherein the scissors are formed so as to integrally have a bent plate portion (20 c) connecting between the portion (20 a) and the outer plate portion (20 b). Support structure for a front wheel brake bracket in a riding vehicle.   Support protrusions (15L, 15R) that pivotally support the axle (11) project forward in the vehicle front-rear direction and are integrally formed on the front wall along the vehicle front-rear direction at the lower part of the pair of pipe members (14L, 14R). The outer plate is provided with the supported portion (21) at the front end portion along the vehicle front-rear direction of the inner plate portion (20a), and disposed behind the inner plate portion (20a) along the vehicle front-rear direction. The support structure for a bracket for a front wheel brake in a saddle-ride type vehicle according to claim 4, wherein the brake component (19) is attached to the portion (20b).   The supported portion (21) is formed by welding a cylindrical collar (26) passing through the bracket (20) to the bracket (20) so that the axle (11) is inserted therethrough. 26) includes a thick part (26a) that penetrates the bracket (20) and is welded to the bracket (20), and a thin part (26b) that is formed thinner than the thick part (26a). 6. The support structure for a bracket for a front wheel brake in a saddle-ride type vehicle according to any one of claims 1 to 5, characterized in that are coaxially and continuously connected.

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