JP2011195096A - Center stand of motorcycle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a center stand of a motorcycle capable of increasing the strength of a joined section of a foot bar with a stand body while simplifying its structure.SOLUTION: The center stand 18 includes a stand body 42 having a pair of leg parts 42a, 42b which are pivotably supported by a power unit 6, swingable to the erection position and the accommodation position, and capable of supporting the motorcycle weight at the erection position, a foot bar 43 which is fixed to one leg part 42a to transmit the stepping force for swinging the stand body 42 to the erection position to the stand body 42, a reinforcing member 45 provided between one leg part 42a and the foot bar 43, and a stopper rubber 46 which is provided on the reinforcing member 45 and held between the stand body 42 at the accommodation position and a power unit 6.

Description

  The present invention relates to a motorcycle center stand, and more particularly to a motorcycle center stand provided with a stopper rubber that comes into contact with a vehicle body or a power unit when stored.

The motorcycle center stand allows the vehicle to stand on its own with the rear wheels floating.
A conventional center stand has a pair of legs pivotally supported by a vehicle body or a power unit and swingable to a standing position and a storage position, and fixed to one of the legs to swing the stand body to a standing position. A foot bar that transmits a pedaling force to the stand main body, a stopper rubber that comes into contact with the vehicle body or the power unit when the stand main body is stored, and a buffer bracket provided with the stopper rubber (see, for example, Patent Document 1).

Japanese Patent Laid-Open No. 01-195189

  In the conventional center stand, in addition to the foot bar and the shock-absorbing bracket, a bracket for pivotally supporting the stand body on the vehicle body or the power unit, a hook with a return spring for biasing the stand body to the storage position, etc. are welded to the stand body. Assembled.

Such a structure of the center stand needs to be simplified as much as possible in order to further reduce the cost.
Further, since the center stand requires high strength at the joint portion between the foot bar and the stand main body, it is desired to further improve the strength of the joint portion between the foot bar and the stand main body while simplifying the structure.

  Therefore, the present invention proposes a motorcycle center stand in which the strength of the joint portion between the foot bar and the stand main body is further improved while the structure is simplified.

  In order to solve the above-described problems, a motorcycle center stand according to the present invention includes a pair of legs that are pivotally supported by a vehicle body or a power unit and swingable to a standing position and a storage position and support a vehicle weight in the standing position. A stand main body, a foot bar that is fixed to one of the leg portions and transmits a pedal force that swings the stand main body to an upright position, and a reinforcement provided between the one of the leg portions and the foot bar. And a stopper rubber provided on the reinforcing member and sandwiched between the stand main body and the vehicle body or the power unit at the storage position.

  ADVANTAGE OF THE INVENTION According to this invention, the center stand of the motorcycle which improved the intensity | strength of the junction part of a foot bar and a stand main body can be proposed, aiming at the simplification of a structure.

The left view which showed the scooter type motorcycle provided with the center stand of the motorcycle concerning the embodiment of the present invention. 1 is a left side view partially showing a scooter-type motorcycle including a center stand for a motorcycle according to an embodiment of the present invention. 1 is a front view showing a center stand of a motorcycle according to an embodiment of the present invention. 1 is a perspective view showing a center stand of a motorcycle according to an embodiment of the present invention. 1 is a perspective view showing a center stand of a motorcycle according to an embodiment of the present invention. The front view which showed the other example of the center stand of the motorcycle which concerns on embodiment of this invention.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a motorcycle center stand according to the present invention will be described below with reference to FIGS.

  FIG. 1 is a left side view showing a scooter type motorcycle having a motorcycle center stand according to an embodiment of the present invention.

  In describing the structure of the motorcycle 1, the solid arrow F in FIG. 1 is defined as the front, and the solid arrow R in FIG. 1 is defined as the rear. Regarding the left and right, when the rider of the motorcycle 1 looks forward, the left hand side of the rider is defined as the left side of the motorcycle 1 and the opposite side as the right side of the motorcycle 1. With respect to up and down, the rider's head side is defined as the upper side of the motorcycle 1 and the opposite side is defined as the lower side of the motorcycle 1. The direction of each part constituting the motorcycle 1 is the same as that of the motorcycle 1.

  As shown in FIG. 1, a so-called scooter type motorcycle 1 includes a steel pipe body frame 3, a front fork 4 that is pivotally supported by the body frame 3 so as to be pivotable to the left and right, and a front fork 4. A front wheel 5, a power unit 6 pivotally supported on the body frame 3, a rear wheel 7 pivotally supported on the power unit 6, and a shock absorber 8 for buffering and restoring the swing of the power unit 6 and the rear wheel 7. An air intake device (not shown) disposed at the front upper portion of the power unit 6, an air cleaner 11 disposed at the rear upper portion of the power unit 6, a seating seat 12 provided on the vehicle body frame 3, and an article storage box 13 A fuel tank 15 disposed at the rear, a front frame cover 16 and a rear frame cover 17 covering the vehicle body frame 3, and a power unit. It includes a center stand 18 provided in the lower part of the 6.

  The vehicle body frame 3 includes a head pipe 21 positioned at the frontal head, a down pipe 22 that extends from the head pipe 21 rearward and downward in an L shape and has a substantially horizontal portion along the front-rear direction, and a down pipe 22 A rear pipe 23 that extends obliquely upward from the rear end of the rear pipe, and a step frame 24 that is fixed to the down pipe 22 and projects from the L-shaped curved portion of the down pipe 22 over the substantially horizontal portion in the vehicle width direction. And an engine bracket 25 provided in the vicinity of a joint portion between the down pipe 22 and the rear pipe 23. The head pipe 21 pivotally supports the handle bar 27, the head lamp 28, and the front fender 29 so as to be rotatable left and right. The engine bracket 25 pivotally supports the power unit 6 so as to be swingable in the vertical direction.

  The power unit 6 includes an engine 31 and a transmission unit 32 that are integrated. The power unit 6 swings up and down around a pivot shaft 33 installed at the rear end of the engine bracket 25 and serves as a swing arm for the rear wheel 7.

  The shock absorber 8 is installed between the rear part of the rear pipe 23 and the rear part of the power unit 6, and each end part is pivotally supported by the rear pipe 23 or the power unit 6.

  The front frame cover 16 is a resin cover that covers the front portion of the vehicle body frame 3.

  The rear frame cover 17 is a resin cover that covers the rear portion of the vehicle body frame 3.

  The motorcycle 1 includes a tail lamp 36 provided at the rear end of the rear frame cover 17, a rear fender 37 provided above the rear wheel 7, and a resin step board disposed above the step frame 24. 38.

  The front frame cover 16, the rear frame cover 17, and the step board 38 form a design surface of the motorcycle 1 by continuously connected surfaces.

  The center stand 18 is pivotally supported by a pair of support brackets 41 provided on the left and right of the bottom front portion of the power unit 6. The center stand 18 is pivotally supported by the power unit 6 and can swing between a standing position (solid line in FIG. 1) and a storage position (two-dot chain line in FIG. 1), and a stand body. And a foot bar 43 that transmits to the stand body 42 a pedal force that is fixed to 42 and swings the stand body 42 to the upright position.

FIG. 2 is a left side view partially showing a scooter type motorcycle having a motorcycle center stand according to an embodiment of the present invention.
FIG. 3 is a front view showing the center stand of the motorcycle according to the embodiment of the present invention.
4 and 5 are perspective views showing the center stand of the motorcycle according to the embodiment of the present invention.

  As shown in FIGS. 2 to 5, the center stand 18 of the motorcycle 1 is pivotally supported by the power unit 6 and is swingable to a standing position and a storage position, and supports a weight of the motorcycle 1 at the standing position. A stand main body 42 having leg portions 42a and 42b, a foot bar 43 that is fixed to one leg portion 42a and transmits a stepping force that swings the stand main body 42 to an upright position, and the one leg portion 42a and the foot bar 43. , A stopper rubber 46 provided between the stand main body 42 and the power unit 6 at the storage position, and a hook 48 provided on the other leg portion 42b. And a stand body 42 having one end 51 a hung on the power unit 6 and the other end 51 b hung on the hook 48. Comprising a return spring 51 for biasing the storage position (the return spring), the.

  Although the center stand 18 according to the present embodiment is provided in the power unit 6, it may be provided in the vehicle body frame 3 of the motorcycle 1. In this case, the stopper rubber 46 is sandwiched between the vehicle body frame 3 and the reinforcing member 45.

  The stand main body 42 is a center stand provided at a distal end of each of the leg portions 42a and 42b, and a curved tube body 53 formed by bending a tubular steel pipe into a C shape to constitute an arch portion 42c and leg portions 42a and 42b. A ground plate 54 curved to have a curvature in the swing direction of 18, and a through hole 55 a that is formed to protrude from the periphery of the boundary between the leg portions 42 a, 42 b and the arch portion 42 c and serves as the swing center of the center stand 18. A pair of main body brackets 55.

  The curved tubular body 53 may have a shape that widens toward the tip of the leg portions 42a, 42b, such as an inverted V shape, in addition to the C-shape, and the pair of leg portions 42a, 42b are substantially shaped like an inverted U shape. The shape may extend in parallel.

  The ground plate 54 and the main body bracket 55 are welded and fixed to the curved tube body 53. The through holes 55a of the main body brackets 55 have center lines that are substantially the same straight line. The center stand 18 is pivotally supported by the support bracket 41 of the power unit 6 through the through hole 55a.

  The foot bar 43 extends outward from the fixed end 43a welded to the one leg portion 42a, specifically toward the left outer direction of the motorcycle 1. The foot bar 43 is formed by bending so that the position of the free end 43b with respect to the motorcycle 1, that is, the position of the left outer end of the motorcycle 1 can be easily applied by the user of the motorcycle 1 when the center stand 18 is raised. The The foot bar 43 includes a stepping portion 57 at the free end 43b.

  The reinforcing member 45 is bridged between the one leg portion 42a and the foot bar 43 like a beam. More specifically, the reinforcing member 45 is provided at one end portion 45 a fixed to the distal end side of the leg portion 42 a and a middle portion of the foot bar 43 with respect to a fixed portion between the leg portion 42 a and the foot bar 43 (fixed end 43 a of the foot bar 43). And a fixed other end 45b. The reinforcing member 45 has a hole 45c to which the stopper rubber 46 is fixed.

  The stopper rubber 46 includes a bulging portion 46 a that is locked to the hole 45 c of the reinforcing member 45. The stopper rubber 46 is sandwiched between the stand main body 42 and the power unit 6 when the center stand 18 is swung to the storage position, and buffers the collision between the center stand 18 and the power unit 6 at the storage position. The center stand 18 is positioned at. Further, the stopper rubber 46 buffers a collision between the power unit 6 and the center stand 18 (more specifically, the stand main body 42, the foot bar 43, the reinforcing member 45, and the hook 48) when the motorcycle 1 is traveling.

  The hook 48 urges the stand main body 42 to the storage position by the return spring 51 and the urging force of the return spring 51 to secure an appropriate moment arm so that the stand main body 42 can be held at the storage position by this urging force. The main body bracket 55 is disposed away from the through hole 55a so as to correspond to the above.

FIG. 6 is a front view showing another example of the center stand of the motorcycle according to the embodiment of the present invention.
In addition, the same code | symbol is attached | subjected to the same structure as the center stand 18 in the center stand 18A, and the overlapping description is abbreviate | omitted.

  As shown in FIG. 6, the center stand 18 </ b> A of the motorcycle 1 is provided between the foot bar 43 </ b> A that is biased and fixed to the free end side of the one leg part 42 a, and between the one leg part 42 a and the foot bar 43. And a reinforcing member 45A.

  The foot bar 43A extends from the fixed end 43a biased toward the free end side of the one leg portion 42a as compared to the foot bar 43 of the center stand 18 toward the vehicle width outward direction, specifically toward the left outer direction of the motorcycle 1. Extend.

  The reinforcing member 45A is fixed to an intermediate portion of the foot bar 43, one end portion 45a fixed to be closer to the arch portion 42c than the fixed portion (the fixed end 43a of the foot bar 43A) between the leg portion 42a and the foot bar 43A. And an end 45b.

  The center stands 18 and 18A of the motorcycle 1 according to the present embodiment configured as described above are first arranged at the storage positions so as not to hinder the traveling of the motorcycle 1 (in FIG. 1 and FIG. Chain line). At this time, the center stands 18, 18 </ b> A are positioned at the storage position by the hook 48 being pulled by the return spring 51 with the through hole 55 a of the main body bracket 55 as a fulcrum, and the stopper rubber 46 abutting against the power unit 6. The stopper rubber 46 positions the center stands 18 and 18A in the storage position without bringing the stand main body 42, the foot bars 43 and 43A, the reinforcing members 45 and 45A, and the hooks 48 excluding the through holes 55a of the main body bracket 55 into contact with the power unit 6. To do.

  The traveling motorcycle 1 catches the unevenness of the road surface with the rear wheel 7 and swings the power unit 6. At this time, the center stands 18 and 18A are swung around the through hole 55a of the main body bracket 55 due to the swing of the power unit 6 and may be separated from the storage position, but are immediately returned to the storage position by the return spring 51. The stopper rubber 46 cushions the impact so that the stand main body 42, the foot bars 43 and 43A, the reinforcing members 45 and 45A, and the hook 48 do not collide with the power unit 6. Further, in the entire center stand 18, 18A, the hook 48 provided on the other leg portion 42b receives the urging force of the return spring 51, and the reinforcing member 45 provided on the one leg portion 42a is cushioned by the stopper rubber 46. Since the positioning reaction force is received, the free end side portions of the leg portions 42a and 42b supported in a cantilever shape are shortened as much as possible, and the mass of the portions is minimized to suppress the deflection of the entire center stand 18 and 18A. To do.

  Next, when the center stands 18 and 18A swing from the storage position to the standing position, the motorcycle 1 is made to stand on its own. The standing operation of the center stands 18 and 18A (the so-called operation of applying the center stands 18 and 18A) is generally performed by the rider of the motorcycle 1 stepping on the stepping portion 57 of the center stands 18 and 18A. Is called. The pedaling force by the rider of the motorcycle 1 causes the center stands 18 and 18A to swing from the stowed position 57 to the standing position via the foot bars 43 and 43A. At this time, the center stands 18 and 18A first ground the grounding plate 54 at the tips of the leg portions 42a and 42b to the road surface. In this state, when the rider of the motorcycle 1 further raises the motorcycle 1 obliquely upward while stepping on the stepping portion 57, the center stands 18 and 18A stand up while swinging around the through hole 55a of the main body bracket 55. Head for. When the center stands 18 and 18A are arranged in the standing position, the motorcycle 1 is self-supporting (FIG. 1).

  Note that the operation of returning the center stands 18 and 18A to the storage position again (the operation of removing the so-called center stands 18 and 18A) is generally performed by the rider of the motorcycle 1 pushing the motorcycle 1 forward. When the motorcycle 1 is pushed forward, the center stands 18 and 18A move toward the storage position while swinging around the through hole 55a of the main body bracket 55.

  The center stands 18 and 18A of the motorcycle 1 according to the present embodiment configured as described above have the stopper rubber 46 attached to the reinforcing members 45 and 45A provided between the stand main body 42 and the foot bars 43 and 43A. Therefore, an extra individual bracket for fixing the stopper rubber 46 is not required, and the structure can be simplified and the cost can be reduced.

  Further, the center stands 18 and 18A of the motorcycle 1 reinforce the joint portion between the stand main body 42 and the foot bars 43 and 43A by the reinforcing members 45 and 45A for fixing the stopper rubber 46, thereby simplifying the structure and improving the stand main body 42. Further, the foot bars 43 and 43A and the strength of the joined portion are improved at the same time.

  Further, the center stands 18 and 18A of the motorcycle 1 are configured such that the stopper rubber 46 is a motorcycle by configuring the legs 42a and 42b of the stand main body 42 into a shape (C-shape or V-shape) widening toward the tip. Since the position in the width direction (left-right direction) with respect to 1 is as close to the center of the vehicle as possible, it is easy to secure a contact position between the power unit 6 or the body frame 3 and the stopper rubber 46.

  Furthermore, the center stands 18 and 18A of the motorcycle 1 can change the arrangement of the stopper rubber 46 by changing the arrangement relationship between the foot bars 43 and 43A and the reinforcing members 45 and 45A in the longitudinal direction of the leg portion 42a. The degree of freedom of arrangement of the contact position between the power unit 6 or the vehicle body frame 3 and the stopper rubber 46 is high.

  Therefore, according to the center stands 18 and 18A of the motorcycle 1, the strength of the joint portion between the foot bars 43 and 43A and the stand main body 42 can be further improved while simplifying the structure.

DESCRIPTION OF SYMBOLS 1 Motorcycle 3 Body frame 4 Front fork 5 Front wheel 6 Power unit 7 Rear wheel 8 Shock absorber 11 Air cleaner 12 Seating seat 13 Article storage box 15 Fuel tank 16 Front frame cover 17 Rear frame cover 18, 18A Center stand 21 Head pipe 22 Down Pipe 23 Rear pipe 24 Step frame 25 Engine bracket 27 Handle bar 28 Head lamp 29 Front fender 31 Engine 32 Transmission unit 33 Pivot shaft 36 Tail lamp 37 Rear fender 38 Step board 41 Support bracket 42 Stand main body 42a Leg 42b Leg 43, 43A Foot bar 43a Fixed end 43b Free end 45, 45A Reinforcing member 45a One end 45b Other end 45c Hole 46 Stopper Bar 46a Swelling portion 48 Hook 51 Return spring 51a One end 51b The other end 42c Arch portion 53 Curved tube body 54 Grounding plate 55a Through hole 55 Body bracket 57 Stepping portion

Claims (3)

A stand main body pivotally supported by the vehicle body or the power unit and swingable to a standing position and a storage position and having a pair of legs that support the vehicle weight in the standing position;
A foot bar that is fixed to one of the legs and transmits a stepping force that swings the stand body to an upright position to the stand body;
A reinforcing member provided between one of the legs and the foot bar;
A center stand for a motorcycle, comprising: a stopper rubber provided on the reinforcing member and sandwiched between the stand main body and the vehicle body or the power unit at a storage position. The motorcycle center stand according to claim 1, wherein the reinforcing member is bridged in a beam shape between one of the leg portions and the foot bar. A hook provided on the other of the legs,
3. A return spring having one end hung on the vehicle body or the power unit and the other end hung on the hook, and biasing the stand main body to a storage position. The motorcycle center stand described in 1.

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