KR20030091675A - Stand apparatus for a motorcycle - Google Patents

Abstract

Provided is a stand apparatus for a motorcycle, in which the stand can be made extremely lightweight and can be easily attached to a power unit.

A pair of left and right hanger arms 17 and 17 is formed in front of the casing 10 of the power unit P, and the hanger arms 17 and 17 are pivoted through the body 15 to the body frame 1. In a two-wheeled motorcycle, a pair of bearing portions supported by the bases of the left and right hanger arms 17 and 17 and supported by the pivots 15 of these hanger arms 17 and 17. Left and right pairs of stand support bosses 19 and 19 which are arranged at a distance L2 narrower than the space L1 of 17a and 17a are integrally formed, and these stand support bosses 19 and ( 19), the hub 22 of the stand 9 disposed therebetween was rotatably connected via the support shaft 25.

Description

Stand device in motorbike {STAND APPARATUS FOR A MOTORCYCLE}

The present invention forms a pair of left and right hanger arms on the front of a casing of a power unit composed of an engine and a transmission connecting rear wheels to an output shaft, and the hanger arms are pivotally connected to the body frame through a horizontal pivot. In addition, the present invention relates to a two-wheeled vehicle equipped with a rear cushion that cushions up and down fluctuations of the unit between the body frame and the power unit. In particular, in a two-wheeled vehicle in which a stand for autonomous vehicle body is mounted on the power unit. The improvement of a stand apparatus is related.

In motorcycles, mounting the stand to a power unit is already known, for example, as disclosed in Japanese Patent Laid-Open No. 5-246359.

Mounting the stand to the power unit makes it possible to integrally mold the stand support boss supporting the stand together with, for example, the engine's crankcase, which is more cost effective than welding and installing the stand support boss to the body frame. Become. However, when the stand is attached to the power unit, the weight of the stand increases the load on the rear cushion, that is, the load under the spring. Therefore, mounting the stand to the power unit requires strong weight reduction of the stand.

This invention is made | formed in view of such a situation, and an object of this invention is to provide the stand apparatus in the motorcycle which made the stand very light weight, and was easy to attach to a power unit.

In order to achieve the above object, the present invention forms a pair of left and right hanger arms on the front of the casing of the power unit consisting of the engine and the transmission connecting the rear wheels to the output shaft, and through the horizontal pivot In a two-wheeled vehicle that is rotatably connected to a vehicle body frame and is equipped with a rear cushion between the vehicle body frame and the power unit to cushion up and down swings of the unit, on the bases of the left and right pairs of hanger arms, A pair of left and right stand support bosses arranged at a narrower interval than a pair of bearing portions supported by the pivot are integrally formed, and a support shaft for rotating the stand between the standing position and the storing position is formed in these stand support bosses. The first feature is that connected via.

The casing and the pivot correspond to the crankcase 10 and the second pivot 15 in the embodiment of the present invention described later, respectively.

According to this first feature, the left and right hanger arms are formed integrally with the casing of the power unit by enlarging the gap between the left and right bearing parts supported by the pivot very largely, thereby supporting the rigidity of the power unit by the pivot. It is possible to raise the posture of stable up and down swing to the power unit at all times, thereby obtaining a good ride comfort. In addition, the two hanger arms are integrally formed with a pair of left and right stand support bosses that support the stand through the support shaft, and there is no need to specifically form the stand support bosses in the casing to simplify the shape of the casing, The casting can be facilitated and the cost can be reduced. In particular, since the left and right stand support bosses are formed so as to be arranged in the base having a relatively high rigidity of the left and right hanger arms at intervals narrower than the gap between both bearing portions, the base end portions of the stands axially supported by these stand support bosses are narrow. It becomes possible to make it possible to reduce the weight of the stand. Therefore, the load burden of a rear cushion can be reduced and it can contribute to the improvement of a riding comfort.

Moreover, in addition to a 1st characteristic, this invention is characterized by arrange | positioning the hub of the stand supported by the said support shaft between a pair of stand support bosses.

According to this second feature, by placing the hubs of the stands between the left and right stand support bosses, it is possible to use a short hub, further reducing the weight of the stand, and Positioning of the hub becomes easy, and assembly of the stand to both stand support bosses becomes good.

In addition, the present invention, in addition to the first or second feature, the stand is provided with a reinforcement plate that connects the hub and left and right support legs to the stand, and a standing stopper contacting the reinforcement plate to define the standing position of the stand. It is a 3rd characteristic that what was formed in the said hanger arm.

According to this third aspect, the reinforcing plate connecting the hub and the supporting leg also serves as a stopper plate defining the standing position of the stand, which can contribute to the simplification of the structure of the stand.

In addition, the present invention, in addition to any one of the first to third features, the left and right hanger arms are formed in an approximately octagonal shape in plan view so that the gap between them becomes narrow toward the base in the bearing portion. It is a 4th characteristic.

According to this fourth feature, the left and right hanger arms are connected to the pivot to increase the stiffness in the lateral direction and form the left and right stand support bosses on the base where the distance between the two hanger arms is narrowed, thereby reducing the weight of the stand. And strong support of the stand can be achieved.

1 is a side view of a motorcycle having a stand apparatus of the present invention.

FIG. 2 is a view showing a standing state of the stand in an enlarged side view around the stand device of FIG. 1. FIG.

FIG. 3 is a corresponding view of FIG. 2 showing a storage state of the stand; FIG.

4 is a bottom view of FIG. 3.

5 is a cross-sectional view taken along line 5-5 of FIG. 4.

6 is a rear view of the stand.

7 is a cross-sectional view taken along line 7-7 of FIG. 6.

8 is a cross-sectional view taken along line 8-8 of FIG. 6.

<Description of Symbols for Main Parts of Drawings>

1: body frame 6r: rear wheel

8: rear cushion 9: stand

10 casing (crankcase) 15 pivot (second pivot)

17 hanger arm 17a bearing part

21: support leg 22: hub

23: reinforcement plate (front part reinforcement plate) 25: support shaft

29: standing stopper

A: Standing position of stand B: Storing position of stand

E: engine T: transmission

S: Motorcycle

Ll: Bearing part spacing of hanger arm on right and left

L2: Stand support boss spacing left and right

EMBODIMENT OF THE INVENTION Embodiment of this invention is described below according to one Example of this invention shown in an accompanying drawing.

1 is a side view of a motorcycle having a stand apparatus of the present invention, FIG. 2 is an enlarged side view of the stand around the stand apparatus of FIG. 1, and FIG. 3 is a standing state of FIG. 4 is a bottom view of FIG. 3, FIG. 5 is a sectional view taken along line 5-5 of FIG. 4, FIG. 6 is a rear view of the stand, FIG. 7 is a sectional view taken along line 7-7 of FIG. 6, and FIG. It is an 8-8 line cross section.

First, in FIG. 1, the vehicle body frame 1 of the motorcycle S is a front part supporting the step floor 3 extending downward from the head pipe 1h which supports the front fork 2 in a steerable manner. It consists of the frame 1f, the cargo box 4 extended obliquely upward from the rear end of this front part frame 1f, and the rear half frame 1r which supports the boarding seat 5, The front fork 2 The front wheel 6f is axially supported at the lower end, and the power unit P for driving the rear wheel 1r while driving it while supporting the rear wheel 6r is capable of swinging up and down, and the rear frame 1r. Between the and the power unit P, the rear cushion 8 which cushions the up-down swing of the power unit P is attached. The power unit P is also equipped with a stand 9 capable of allowing the vehicle body to stand on its own. Thus, the motorcycle S is configured of a scooter type.

The power unit P is a transmission T for accommodating the engine case and the mission case 11 integrally with the crankcase 10 of the engine E and accommodating a belt type continuously variable transmission mechanism therein. The output shaft which mounts the rear wheel 6r of the said transmission mechanism is supported by the rear end of the mission case 11, and is upper part in the rear frame 1r in the upper part of the rear end of this mission case 11. The lower end of the rear cushion 8 is connected.

Next, the suspension of the said power unit P is demonstrated with reference to FIGS.

The suspension links 13 are pivotally connected to the left and right pairs of brackets 12 and 12 formed at the front end of the rear frame 1r via a horizontal first pivot 14. The suspension link 13 includes one front arm 13a and a pair of left and right rear arms 13b and 13b, and the front ends of the left and right rear arms l3b and 13b are horizontal. It is connected to each other by the cylindrical shaft 13c, and the front arm 13a is inserted through the cushion rubber 16 in the rear end of the front frame 1f.

As shown in Fig. 4, the crankcase 10 of the engine E is composed of a left case half 10a and a right case half 10b joined to each other at a divided surface in the vertical direction, and these case half ( On the lower surfaces of 10a) and 10b, left and right pairs of hanger arms 17 and 17 having bearing portions 17a and 17a at each front end are integrally formed. Thus, the left and right hanger arms 17 and 17 are integrally formed in the left and right cases 10a and 10b, respectively, so that the left and right case halves and the hanger arms 10a and 17; The integral molding (casting) of each of (10b) and (17) can be made easy.

By the way, the left and right hanger arms 17 and 17 are formed in an octagonal shape in plan view so that the gap between them becomes narrow toward the base in the bearing portions 17a and 17a. Rubber bearings are press-fitted into the inner circumferential surfaces of the bearing portions 17a and 17a, and the bearing portions 17a and 17a and the cylindrical shaft l3c disposed therebetween are inserted therethrough. The second pivot 15 is horizontally connected to allow relative rotation. Therefore, the power unit P can swing up and down around the 2nd pivot 15, and the rocking impact force acting on the suspension link 13 in this power unit P is absorbed by the cushion rubber 16. As shown in FIG. .

On the bases of the left and right hanger arms 17 and 17, a pair of left and right stand support bosses 19 arranged at a spacing L2 narrower than the spacing L1 between the bearing portions 17a and 17a. (19) is integrally formed, and the stand (9) is attached to these stand support bosses (19) and (19) as follows.

As shown in FIGS. 4-8, the stand 9 is attached to the rotation center of the left and right support legs 21 and 21 and the support legs 21 and 21 which were integrally connected in U shape. A hub 22 made of pipe material disposed thereon, and a front reinforcement plate 23 welded to connect the hub 22 and the left and right support legs 21 and 21 at the front side of the stand 9; It consists of a rear reinforcement plate 24 welded to connect between the hub 22 and the left and right support legs 21, 21 at the rear side of the stand 9, and the hub 22 is It is disposed between the left and right pair of the stand support bosses (19), (19). Thus, the support shaft 25 having the expansion head portion 25a is inserted into the stand support bosses 19 and 19 and the hub 22 arranged in the horizontal direction, and the split pins for preventing falling out at the front ends thereof. 26 is mounted.

The left and right support legs 21 and 21 integrally couple a pair of grounding portions 21a and 21a which can be bent in an outward direction and grounded with a ground interval longer than the length of the hub 22. It is provided, and the standing pedal 28 is integrally provided in the outer end of the ground part 21a of the left side.

Thus, the stand 9 is a standing position A to ground the ground portions 21a and 21a of the left and right support legs 21 and 21 so as to stand the vehicle body, and the support legs 21 and ( 21 can be rotated around the support shaft 25 between the stand supporting bosses 19 and the storing position B for storing the rear of the support bosses 19 and 19, and the standing position A must be defined. A pair of left and right standing stoppers 29 which receive the left and right side portions of the front reinforcement plate 23 front surface are formed in the hanger arms 17 and 17 on the left and right sides. In addition, the storage position B must be defined, and a storage stopper 34 receiving the stopper rubber 30 placed on one of the left and right support legs 21 and 21 is formed at the bottom of the crankcase 10. do.

2, 3, and 6, the hook 31 welded to the outer surface of the support leg 21 on the right side and the locking pin protruding on one side to the hanger arm 17 on the right side ( The stand holding spring 33 is provided long between 32). The stand holding spring 33 has a line of action of its tension across the center of the support shaft 25 in accordance with the rotation between the standing position A and the storing position B of the stand 9. As a result, the stand 9 can be held at any position of standing and storage.

Next, the operation of this embodiment will be described.

The left and right hanger arms 17 and 17 are integrally formed on the crankcase 10 with the gap L1 between the left and right bearing portions 17a and 17a supported by the second pivot 15 very large. By doing so, the support rigidity of the power unit P by the second pivot 15 can be increased, and the posture of stable up-down swing can be always given to the power unit P, and a good ride comfort can be obtained. In particular, since the left and right hangers 13 are formed in an approximately octagonal shape when viewed in plan so that the gap between them is narrowed toward the base at the bearing portions 17a and 17a, the second pivot 15 In the state connected with the suspension link 13 through, the rigidity of the lateral direction mutually increases, and it can contribute to the further strengthening of the support rigidity of the power unit P. FIG.

In addition, the pair of left and right stand support bosses l9 and 19 which support the hub 22 of the stand 9 through the support shaft 25 are integrally formed on both the hanger arms 17 and 17. Since it is formed, it is not necessary to specifically form the stand support bosses 19 and 19 in the crankcase 10, to simplify the shape of the crankcase 10, and furthermore, to facilitate the casting, Can contribute to the reduction of

In addition, the left and right stand support bosses 19 and 19 have a relatively high rigidity of the hanger arms 17 and 17 on the left and right sides, and the distance L1 between the two bearing portions 17a and 17a. Since it is formed so that it may be arranged by narrower space | interval L2, it becomes possible to make narrow the base end part of the stand 9 connected to these stand support bosses 19 and 19, and to reduce the weight of the stand 9, This can bring firm support of the stand 9.

In particular, by placing the hub 22 of the stand 9 between the stand support bosses 19 and l9 of both sides, the use of the short hub 22 becomes possible, further reducing the weight of the stand 9. At the same time, the positioning of the hub 22 between the two stand support bosses 19 and 19 is facilitated, and the stand 9 is moved to both the stand support bosses 19 and 19. The assemblability becomes good.

In the stand 9, the front reinforcement plate 23 connecting the hub 22 and the support legs 21 and 21 abuts against the standing stopper 29 of the crankcase 10 to stand ( Since the standing position A of 9) is defined, the front reinforcement board 23 also serves as a stopper plate, and can contribute to the simplification of the structure of the stand 9.

The present invention is not limited to the above embodiments, and various design changes can be made without departing from the gist thereof.

As described above, according to the first aspect of the present invention, a pair of left and right hanger arms are formed on the front of the casing of the power unit including the engine and the transmission connecting the rear wheels, and the hanger arms are pivoted horizontally. In a two-wheeled vehicle that is pivotally connected to a vehicle body frame and is equipped with a rear cushion that cushions up and down swings of the unit between the body frame and the power unit, on the bases of the left and right pairs of hanger arms, A pair of left and right stand support bosses which are arranged at intervals narrower than the gap of the pair of bearing portions supported by the pivots of the support body, and the supports capable of pivoting the stand between the standing position and the storage position to these stand support bosses Because of the connection through the shaft, the left and right hanger arms have a very large gap between the left and right bearing portions supported by the pivot. By forming integrally with the casing of the power unit W, increasing the support rigidity of the power unit by a pivot, it is possible to give always stable up and down swinging attitude to the power unit, it is possible to obtain good riding comfort. In addition, the two hanger arms are integrally formed with a pair of left and right stand support bosses that support the stand through the support shaft, and there is no need to specifically form the stand support bosses in the casing to simplify the shape of the casing, The casting can be facilitated and the cost can be reduced. Particularly, since the left and right stand support bosses are formed so as to be arranged in the base having a relatively high rigidity of the left and right hanger arms at intervals narrower than the gap between the two bearing portions, the bases of the stands connected to these stand support bosses are narrow. It is possible to reduce the weight of the stand, bring about a reduction in the load burden of the rear cushion, and contribute to the improvement of the riding comfort.

According to the second aspect of the present invention, in addition to the first aspect, since the hub of the stand supported by the support shaft is disposed between the pair of stand support bosses, the hub of the stand is disposed between the left and right stand support bosses. The use of a shorter hub makes it possible to use a shorter hub, to further reduce the weight of the stand, and to facilitate positioning of the hub between both stand support bosses, and to assemble the stand support bosses on both sides of the stand. The sex becomes good.

According to a third aspect of the present invention, in addition to the first or second aspect, a stand is provided with a reinforcing plate connecting the hub and the left and right support legs, and a standing position of the stand is in contact with the reinforcing plate. Since the standing stopper which defines the following is formed in the said hanger arm, the reinforcement board which connects between a hub and a support leg also serves as the stopper plate which defines the standing position of a stand, and can contribute to the simplification of the structure of a stand.

In addition, according to the fourth aspect of the present invention, in addition to any one of the first to third aspects, the left and right hanger arms are approximately eight when viewed in a plane such that the distance between the two narrows from the bearing portion toward the base. Since it is formed in the shape of a child, the left and right hanger arms increase the stiffness in the lateral direction by connecting with the pivot, and at the same time, the left and right stand supporting bosses are formed on the base where the distance between the two hanger arms is narrowed, thereby reducing the weight of the stand. And strong support of the stand can be achieved.

Claims (4)

A pair of left and right hanger arms 17 and 17 is formed in front of the casing 10 of the power unit P, which consists of the engine E and the transmission T connecting the rear wheels 6r to the output shaft. The hanger arms 17 and 17 are rotatably connected to the body frame 1 via a horizontal pivot 15, and between the body frame 1 and the power unit P, the unit ( In the motorcycle equipped with the rear cushion 8 which cushions the up-down swing of P), A pair of bearing portions 17a supported on the bases of the left and right pairs of hanger arms 17 and 17 and supported by the pivot 15 of these hanger arms 17 and 17 ( A pair of the left and right stand support bosses 19 and l9 which are arranged at a distance L2 narrower than the space Ll of 17a is integrally formed, and the stand 9 is attached to these stand support bosses l9 and 19. Is connected via a support shaft (25) which can be rotated between an upright position (A) and a storage position (B). The method of claim 1, A stand apparatus in a motorcycle, characterized in that a hub (22) of a stand (9) supported by the support shaft (25) is disposed between a pair of stand support bosses (9) and (19). The method according to claim 1 or 2, The stand 9 is provided with a reinforcement plate 23 connecting the hub 22 and the left and right support legs 21 and 21 to abut the reinforcement plate 23 to provide a stand 9. A stand apparatus in a motorcycle, characterized in that a standing stopper (29) defining a standing position (A) is formed on the hanger arms (17) and (17). The method according to any one of claims 1 to 3, The hanger arms 17 and 17 on the left and right sides are formed in an octagonal shape when viewed in plan so that the distance between them becomes narrow toward the base at the bearing portions 17a and 17a. Stand device in two-wheeled vehicle.