JPH0531027Y2 - - Google Patents

Description

[Detailed Description of the Invention] A. Purpose of the Invention (1) Industrial Application Field The present invention relates to an autostand device mounted on a motorcycle, etc., and particularly relates to the structure of the attachment portion of the main stand.

(2) Conventional technology Traditionally, motorcycles, scooters, and other two-wheeled vehicles were manually hung on stands by the driver, but since this required lifting the rear of the vehicle off the ground, it was difficult for women to hang them on stands. It is difficult for such weak drivers, and automation of this process has been desired. Based on such demands, an autostand device has been proposed that automatically places the device on a stand using a motor driven by a battery.

FIG. 5 shows the structure of a main stand attachment part in a conventional autostand device for a motorcycle, and the procedure for assembling the main stand will be explained below based on this figure.

Splines 01a are formed at both left and right ends of the final shaft 01 through which the driving force of the motor is transmitted via a power transmission mechanism, and the splines 03a of the pair of plate-shaped bases 03 of the main stand 02 are connected to the splines 01a. Insert from left and right respectively. Next, the left and right base parts 03 attached to the final shaft 01 are connected together.
A main body part 04 of a main stand 02 formed by bending a bar is fixed using a plurality of bolts 5.
Next, the two bolts 07 are tightened onto both end faces of the final shaft 1 via the washers 06 to complete the installation of the main stand 02.

(3) Problems that the invention aims to solve However, the main stand 0 as mentioned above
In the structure of the attachment part of main stand 02, the base part 03 of main stand 02
If the main body part 04 is assembled in advance as an assembly, the spline 03a of the base part 03 cannot be fitted into the spline 01a of the final shaft 01, and the assembly becomes impossible. Therefore, it is necessary to assemble the base portion 03 and the main body portion 04 as parts on an assembly line, which requires a plurality of bolts to be tightened, which causes a decrease in work efficiency.

The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to provide an autostand device that can efficiently perform the work of assembling a main stand.

B. Structure of the invention (1) Means for solving the problem In order to solve the above problem, the present invention provides a hollow hole having a non-circular cross section in the final shaft to which the driving force of the motor is transmitted via the power transmission mechanism. At the same time, mounting holes having a non-circular cross section are formed in the left and right bases of the main stand that abut both end surfaces of the final shaft, and non-circular mounting holes that pass through the hollow hole of the final shaft and the mounting holes in the left and right bases are formed. The present invention is characterized in that the base of the main stand is fixed to the final shaft with a mounting bolt having a circular cross section so as to be non-rotatable relative to the final shaft.

(2) Effect According to the above configuration, the work of assembling the main stand to the final shaft involves sliding the inner surface of the base of the main stand into contact with the end of the final shaft, and inserting the mounting bolt into the final shaft and the hollow hole. This is done by penetrating the mounting holes in the left and right bases. As a result, the non-circular cross-section of the mounting bolt engages with the non-circular cross-section of the final shaft and the left and right bases, and the base of the main stand is fixed to the final shaft so that it cannot rotate relative to the final shaft. Therefore, when assembling the main stand, only one bolt needs to be tightened, and there is no need to separately fit the left and right bases of the main stand to both ends of the final shaft. The main stand including the left and right bases can be assembled in advance as an assembly.

(3) Embodiments Hereinafter, embodiments of the present invention will be described based on the drawings.

Figures 1 to 4 show an embodiment of an autostand device according to the present invention. Figure 1 is an overall side view of a scooter equipped with the device, and Figure 2 is an enlarged perspective view of the main parts of Figure 1. 3 is a cross-sectional view taken along the line -- in FIG. 4 showing the drive mechanism, and FIG. 4 is a cross-sectional view taken along the line -- in FIG. 3.

As shown in FIG. 1, this scooter S is equipped with a body frame 1 made of welded steel pipes, and between left and right brackets 2 welded to the lower center of the body frame 1, there is a pivot axis 3. An engine hanger H is attached via a buffer shaft 4. At the rear end of this engine hanger H is a well-known rocking type power unit P equipped with an engine E.
is pivotally supported via a swing shaft 5, and a rear wheel Wr is supported at the rear end of the power unit P, which is driven by an internal transmission device. Both ends of a rear suspension 6 are pivotally supported by the power unit P and the vehicle body frame 1. A main stand 8 is attached to the lower part of the engine hanger H by a final shaft 7 so as to be rotatable along arrows A and B between a use position and a storage position.

As shown in detail in FIG. 2, the center portion of the engine hanger H is floating via a ring-shaped buffer rubber 9 on the pivot shaft 3 fixed to a pair of brackets 2 extending rearward from the left and right vehicle body frames 1. Supported. The front end of the engine hanger H is connected to the buffer shaft 4, which is fixed to a pair of stays 11 protruding from the center of a cross pipe 10 connecting the left and right vehicle body frames 1, via a ring-shaped buffer rubber 12. Floating is supported. This buffer rubber 12 has a larger diameter than the buffer rubber 9 of the pivot shaft 3 and is formed to be softer, and the buffer shaft 4 passes through it at a position eccentrically forward from its center. As a result, the engine hanger H mainly swings around the pivot shaft 3, and when it swings in the direction of arrow C, the thick part of the buffer rubber 12 is compressed to provide a large buffering force. . Furthermore,
A buffer rubber 1 is attached to the rear end of the engine hanger H.
The swing shaft 5 of the rocking type power unit P is pivotally supported via the three shock absorbing rubbers 9. , 12, 13 prevent transmission to the vehicle body frame 1.

Spring hooks 1 are attached to the engine hanger H and the main stand 8, which is pivotally supported to the engine hanger H by the final shaft 7.
4 and 15 are provided in a protruding manner, and a toggle mechanism is constructed by tensioning a spring 16 between these two spring hooks 14 and 15. Therefore, the main stand 8 is biased by the toggle mechanism so as to stably stop at either the use position or the storage position. When the main stand 8 is in the use position shown in the figure, the engaging protrusion 17 fixed to the base of the main stand 8 faces the stopper part 2a on the lower surface of the rear end of the bracket 2 with a slight gap therebetween. When the main stand 8 moves upward due to the reaction force of the vehicle body load and the buffer rubbers 9 and 12 are compressed, the engagement protrusion 17 comes into contact with the stopper portion 2a of the bracket 2, causing the vehicle body frame 1 and the main stand 8 to are becoming integrated.

As shown in FIGS. 3 and 4, a motor 18 is attached to the front end of the engine hanger H, and a power transmission mechanism 19 consisting of the motor 18 and a plurality of gears incorporated inside the engine hanger H. A driving device F for the main stand 8 is configured by the following. That is, the output shaft 1 of the motor 18
The worm gear 20 attached to 8a meshes with the worm wheel 22 of the rotating shaft 21, and the small-diameter intermediate gear 2 formed at the inner end of the rotating shaft 21.
1a meshes with a large-diameter intermediate gear 25 that is integrally fixed to a drive gear 24 provided on an intermediate shaft 23. Furthermore, a large-diameter spline 7a is formed on the central outer periphery of the final shaft of the main stand 8, which is pivotally supported by passing through the engine hanger H from side to side. Sector gear 2 energized by
6 is slidably fitted. Therefore, when the fork 30 pivoted on the shaft 29 is driven by the solenoid 28 attached to the engine hanger H,
The sector gear 26 compresses the spring 27 and moves to the position indicated by the chain line, and meshes with the drive gear 24 that is integrated with the large-diameter intermediate gear 25 provided on the intermediate shaft 23.

The inside of the final shaft 7 is penetrated by a hollow hole 7b having a spline formed as a non-circular cross section on the inner surface of both left and right ends thereof. On the other hand, the main stand 8 is a main body portion 8 formed by bending a bar material.
a, and a reinforcing portion 8b welded to this main body portion 8a.
and left and right base portions 8c extending upward from this reinforcing portion 8b.
is a mounting hole 8d formed with a spline as a non-circular cross section having the same shape as the spline of the hollow hole 7b.
is formed. A mounting bolt 31 having a spline formed as a non-circular cross section on the outer periphery of both ends passes through the base 8c of the main stand 8 and the hollow hole 7b of the final shaft 7.
It is tightened with a nut 33 via.

Next, the operation of this embodiment will be explained.

The main stand 8 is already completed as an assembly prior to assembly by welding the reinforcing portion 8b to the main body portion 8a. To assemble the main stand 8 to the final shaft 7, slide the inner surfaces of the left and right bases 8c along the left and right end surfaces of the final shaft 7, and then attach the base 8c to the final shaft 7.
mounting hole 8d and hollow hole 7 of final shaft 7
Align b. Next, the mounting bolt 31 is inserted into the mounting hole 8d and the hollow hole 7b, and both are tightened together with the nut 33. As a result, the spline formed in the mounting bolt 31 engages with the spline formed in the mounting hole 8d and the hollow hole 7b, and the final shaft 7 and the main stand 8 are fixed so that they cannot rotate relative to each other. The final shaft 7 of the main stand 8 is prevented from coming off in the axial direction by a washer 32 interposed between the head of the mounting bolt 31 and the nut 33.

When the driver operates a switch (not shown) to move the main stand 8 from the storage position to the use position, the energized solenoid 28 causes the sector gear 26 to slide to the chain line position and mesh with the drive gear 24. At the same time, the motor 18 is started, and the worm wheel 22 that meshes with the worm gear 20 of the output shaft 18a rotates. The rotation of the worm wheel 22 is transmitted to the sector gear 26 via a small diameter intermediate gear 21a formed on the rotating shaft 21, a large diameter intermediate gear 25 fixed to the intermediate shaft 23, and a drive gear 24, and this sector gear 26 is fixed. The main stand 8 is rotated in the direction of arrow A via the final shaft 7. At this time, when the main stand 8 comes into contact with the ground, the engine hanger H tends to rotate in the direction of arrow C about the pivot shaft 3 due to the reaction force that the main stand 8 receives from the ground. Then, the buffer rubber 1 provided at the front end of the engine hanger H
The thick part of the main stand 8 is compressed between it and the buffer shaft 4 fixed to the stay 11, and its buffering action absorbs the impact that the main stand 8 receives from the ground, and the peak that flows to the motor 18 that drives the main stand 8 is compressed. Current is reduced. When the main stand 8 moves to the use position, the toothless portion of the sector gear 26 releases the engagement with the drive gear 24, and at the same time, the motor 18 is stopped and the solenoid 28 is demagnetized. As a result, the sector gear 26 returns to the position indicated by the solid line due to the elastic force of the spring 27, and the main stand 8 is then in a state where it can be moved to the storage position by manual operation.

When the main stand 8 moves to the use position as described above, the load of the vehicle body is applied to the main stand 8, and the engine hanger H, which is floatingly supported on the bracket 2 by the two buffer rubbers 9 and 12, moves upward. do. As a result, the engaging protrusion 17 provided on the main stand 8 comes into contact with the stopper portion 2a of the bracket 2 from below, and the main stand 8 becomes immovable relative to the bracket 2, resulting in stable support of the vehicle body. becomes.

Although the embodiments of the autostand according to the present invention have been described in detail above, the present invention is not limited to the above-mentioned embodiments. It is possible to make small design changes.

For example, the spline as a non-circular cross section formed in the hollow hole 7b of the final shaft 7, the inner periphery of the base 8c of the main stand 8, and the outer periphery of the mounting bolt 31 may be replaced with a serration or a square hole and a square shaft. is possible. Furthermore, this autostand device is applicable not only to motorcycles but also to tricycles.

C. Effects of the invention As described above, according to the invention, in the work of assembling the main stand to the final shaft, the left and right bases of the main stand are moved in the axial direction of the final shaft as in the conventional case, and the ends of the final shaft are moved. Since there is no need to fit the stand into the main stand, it is possible to assemble the main stand including the left and right bases as an assembly in advance before assembly. This not only makes it possible to increase the rigidity of the main stand, but also improves workability. Furthermore, since the work of assembling the main stand is completed by simply tightening one mounting bolt, it is possible to significantly reduce the number of man-hours.

[Brief explanation of the drawing]

Fig. 1 is an overall side view of a scooter equipped with an autostand device according to an embodiment of the present invention, Fig. 2 is an enlarged perspective view of the main parts of Fig. 1, and Fig. 3 is an illustration of Fig. 4 showing its drive mechanism. FIG. 4 is a sectional view taken along the - line in FIG. 3, and FIG. 5 is a perspective view of the main parts of a conventional autostand device. 7...Fine shaft, 7b...Hollow hole,
8...Main stand, 8c...Base, 8d...
Mounting hole, 18...Motor, 19...Power transmission mechanism, 31...Mounting bolt.

Claims (1)

[Scope of utility model registration request] A hollow hole 7b having a non-circular cross section is formed in the final shaft 7 to which the driving force of the motor 18 is transmitted via the power transmission mechanism 19, and the left and right bases of the main stand 8 abut against both end surfaces of the final shaft 7. A mounting hole 8d having a non-circular cross section is formed in the final shaft 7c.
The base 8c of the main stand 8 is fixed to the final shaft 7 in a relatively non-rotatable manner by means of a mounting bolt 31 having a non-circular cross section passing through the hollow hole 7b and the mounting holes 8d of the left and right bases 8c. Auto stand device.