JPS6012381A - Stand - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention mainly relates to a stand for a two-wheeled vehicle, and more particularly to a main stand that holds one side of the vehicle body and stably supports it in a raised position.

Conventionally, this type of stand consists of a frame with a single structure, and the upper part of the stand is pivotally supported to the vehicle body via a pin, and one span of rotation from the pin to the ground plane is supported. The vehicle was designed to be lifted by movement.

To explain this with the side view of an example of a conventional motorcycle shown in FIG. The vehicle body 1 is rotated clockwise in the figure using the grounding point 5 as a fulcrum, and the vehicle body 1 is pushed up and held in a substantially upright position.
a + roller a, which are integrally connected by the horizontal frame 6b, have a mounting pin hole 6C at the upper part, and the horizontal frame roller 1] has a spring (not shown) that acts elastically to flip the frame 3 to the raised position and the standing position. A locking pin 3d is provided.

Considering the operating force F in such a conventional stand,
The following formula holds.

Stand operating force...F Frame length, distance from pivot point 2 to grounding point 5,
......L1 Angle between the frame bottom and the ground 6...θ1 Height of the handle 4 above the ground 6...LO Weight at the pivot point 2 of the vehicle body...・If W is I?・LO=W-LICO3θ1・・・・・・・・・・
・(l) Therefore, the specifications are set so that the equation of the second term above holds true.

In this case, in order to reduce the operating force F, since the weight W and the height Lo are already defined values, either the ground contact angle θ1 of the frame filter or the length Ll of the frame filter is selected. The value of the operating force F can be reduced by reducing both values (the stand of the present invention is a devised method).

Therefore, in the present invention, an upper frame and a lower frame are formed by forming upper and lower parts of a stand of a single structure, and the lower end of the upper frame is pivotally supported by the lower frame, and the upper frame is rotated around the pivot point. The vehicle body is configured to be lifted within a certain angle range, and the vehicle body is lifted in two stages, and the operating forces F1 and F2 at each stage are reduced compared to the conventional operating force F mentioned above, making it easier to place the vehicle body on the stand. This makes it possible to easily operate a large vehicle body of at least 400cc or more.

Fig. 3 shows an embodiment of the stand according to the present invention; Fig. 4 is a side view of the stand stored in the vehicle body, Fig. 4 is a front view of the stand in its upright position, and Figs.
The figures are side views sequentially showing the operating states of the stand.

In the drawings, reference numeral 10 collectively refers to a stand, which is composed of an upper frame 11 and a lower frame 12, both of which are formed in a chevron shape as shown in the fourth figure, and the lower end 11a of the upper frame 11
, 11a is a bracket 16 fixed to the lower frame 12
It is pivotally supported via a shaft 14.

Then, the central part of the lower frame 12, that is, the curved part protruding from the bracket 16, forms an upper strut (15), which prevents the upper frame 11 from rotating clockwise about the axis 14 in FIG. 3.5.6. do.

Reference numeral 16 denotes a lower stopper that determines the counterclockwise rotation range of the upper frame 110. One end is welded to the lower frame 12, a part is fixed to the bracket 1, and the other end 16a protrudes to the inside of the upper frame 11. It is.

Also, the lower ends 12a of both lower frames 120.

12a is curved at an acute angle on the opposite side of the lower stopper 16, and fixes the reinforcing plate 12b.

17 is a bracket fixed to the upper frame 11 and is attached to the vehicle body (
A pin hole 17a is provided for inserting a mounting pin for connection to (not shown).

Reference numeral 18 denotes a tension spring, one end of which is engaged with a locking pin 19, and the other end of which is engaged with the vehicle body.

To explain the mode of operation of the stand of the present invention having the above-mentioned configuration, when the stand 10 is stored, the third
As shown in the figure, the stand 10 is held in a substantially horizontal position along the vehicle body, but when in use, it is rotated clockwise in the figure around the bottle hole 17 and comes into contact with the ground G at point a. ,
Next, only the lower frame 12 is further rotated clockwise about the shaft 14 as shown by the dashed line in FIG.
6 is brought into contact with the upper frame 11.

In this state, the mounting pin hole 17a and the ground point a' of the lower frame 12 are moved inward from the ground point a.

If the operating force F1 in this case is calculated, the distance between the mounting pin hole 17a and the grounding point a' is L21.
Angle between 2 and ground G ・・・・・・・・・・・・・・・
・θ2 and 0 When comparing this to the equation for the second term above, L2 (L+
Since cosθ2>CO8θ1, F+(F) and the operating force is reduced.

The state in which this operating force F1 is applied occurs during the transition from the state indicated by the dashed line in FIG. 5 to the state indicated by the solid line, and in the subsequent operation shown in FIG. The bent lower end 12a is in full contact with the ground G, as if the lower frame 12 were fixed to the ground G.

Therefore, the upper frame 11, which is pivotally supported by the lower frame 12, is now rotated clockwise about the shaft 14.

In this case, the required operating force is F5, the length of the upper frame 11 is L3, the rotation angle of the upper frame 11 is θ3, and the ground G
If L4 is the distance between
and Lo) Ln -L4, but since L4 is extremely small compared to LO, it is an abbreviation of lj -
The decrease in F3 results in F3 (F), and the operating force F3 is reduced.

Therefore, as a result of the force relationship in the equations 3 and 4 being performed continuously, the vehicle body can be pulled up much more easily than in the conventional method.

Next, when lowering the vehicle body from the stand 10, contrary to the above, first the upper frame 11 is rotated counterclockwise in the figure around the shaft 14, and then the upper frame 11 is lowered. When the vehicle body is rotated until it touches the ground, the lower frame 12 is separated from the ground by the tension spring 18 and pulled up together with the upper frame 11 to restore the state shown in FIG.

Needless to say, the restoring force at this time is easier than that of the conventional single stand structure.

As described above, according to the present invention, a stand is constituted by an upper frame and a lower frame, the upper frame is pivotally supported with respect to the lower frame, and the stand is free to rotate within a certain range, and The two-stage operation makes it possible to reduce the operating force F to a much greater extent than before, making it extremely effective when installed on large and heavy vehicles. Needless to say, it can be widely applied.

[Brief explanation of drawings]

Fig. 1 is a side view showing an example of a conventional automatic boat equipped with a stand, showing the state immediately before the vehicle body is placed on the stand, Fig. 2 is an enlarged front view of the stand, and Fig. 3 is a stand of the present invention. This is a side view showing one embodiment of the stand, showing the state in which it is stored in the vehicle body.
FIG. 7 is a side view sequentially showing the operating state of the stand, which corresponds to FIG. 10 - Stand 11 - Upper frame 113 - Lower end 12 - Lower frame 128 - Lower end 12b - Reinforcement plate 13 - Bracket 14 - Shaft 15 - Upper stopper 16 - Lower stop horn (16a - End part 17 - Bracket 172 - Mounting bin Hole 18 ~ Tension spring 19 ~ Locking pin G ~ Ground July 1, 1980 Patent applicant: Kayaba Kogyo Co., Ltd. Figure 3 Figure 4 Figure 7 Figure 5 Figure 6

Claims (3)

[Claims] (1) A stand that lifts one side of the vehicle body and supports it in the push-up position is divided into two halves into an upper and lower frame to form an upper frame and a lower frame, and the lower end of the upper frame is pivoted to the lower frame, and the pivot point is This stand is characterized by restricting the rotation of the central upper frame within a certain range of angles and lifting the vehicle body in two stages. (2) The stand according to claim 1, wherein a pair of stoppers for regulating the rotation angle of the upper frame are integrally formed on the lower frame. (3) The stand according to claim 1, wherein the lower end of the lower stand is bent into an L shape to provide a certain range of ground contact length.