JP3085877U - bicycle - Google Patents

Abstract

(57) [Problem] To provide a bicycle that absorbs vibration of a rear wheel. SOLUTION: An upper pipe 11 of a vehicle body 1 extends upward from a front pipe 12 of the vehicle body and is connected to a saddle pipe 13 which stands upright at the rear,
Further, it is stretched backward to a predetermined length to form an extension step 111. An upper pedestal 14 is installed on the bottom peripheral edge of the extension step 111, a pivot ear 131 is installed forward on the bottom peripheral edge of the saddle tube 13, and the back fork 2 to which the rear wheel is connected is connected to the pivot ear 131. Will be installed. Extension stage 1 on back fork 2
A lower pivot table 21 corresponding to the upper pivot table 11 is installed, and the vibration isolator 4 is installed vertically between the upper pivot table 14 and the lower pivot table 21. When the vehicle travels on a non-planar road, the rear wheel is linked with the back fork 2 and is rotated around the pivoted ear 131 to be lifted upward, and the vibration isolator 4 on the lower pivot base 21 of the back fork 2 is pivoted upward. It is compressed against the table 14 and absorbs vibration.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a bicycle.

[0002]

[Prior art]

 Bicycles are a highly mobile vehicle for good health, are favored by people, and their designs are diversifying year by year. Today, the industry is designing a bike that is more comfortable to ride, and mounting a vibration isolator on the bike is currently the easiest and most effective way. Stable operation can be achieved by absorbing the vibration energy generated by the vibration isolator. Bicycle vibration isolators that we see today are installed on the two sides of the front fork and absorb vibration.

[0003]

[Problems to be solved by the invention]

 However, this type of bicycle cannot absorb the vibration of the rear part, and the driver cannot absorb the vibration of the rear wheel even if the driver can prevent the vibration of the front wheel. An object of the present invention is to provide a bicycle that absorbs vibration of a rear wheel.

[0004]

[Means for Solving the Problems]

 In order to solve the above problem, in the bicycle according to the first aspect of the present invention, the upper pipe of the vehicle body extends upward from the front pipe of the vehicle body and is connected to a saddle pipe that stands upright at the rear, and further extends rearward to a predetermined length. Stretch to form an extension step. An upper pedestal is installed on the peripheral edge of the bottom of the extension step, a pivoted ear is installed forwardly on the peripheral edge of the saddle pipe bottom, and a back fork to which the rear wheel is connected is installed on the pivoted ear. On the back fork, a lower pedestal corresponding to the upper pedestal of the extension stage is installed, and a vibration isolator is installed vertically between the upper and lower pedestals. Therefore, when passing on a non-planar road, the rear wheel is linked to the back fork and rotates around the pivoted ear and is lifted up, and the vibration isolator on the lower pedestal of the back fork is moved toward the upper pedestal. It is characterized by being compressed and absorbing vibration.

[0005] In the bicycle according to the second aspect of the present invention, protective surfaces are formed on the inner base surfaces of the upper and lower pivot bases so as to smoothly fit the shapes of the upper and lower ends of the vibration isolator. The protective surface is characterized by reinforcing the pivot point between the upper and lower pivots and the vibration isolator. With the above structure, the vibration of the rear wheel can be absorbed.

[0006]

[Embodiment of the invention]

 Hereinafter, embodiments of the present invention will be described with reference to the drawings. First, as shown in FIGS. 1 and 2, in the first embodiment of the present invention, the upper pipe 11 of the vehicle body 1 extends upward from the peripheral edge of the front pipe 12 of the vehicle body to the rear saddle pipe 13 and further to the rear. The extension step 111 having a predetermined length is extended. At the peripheral edge of the extension step 111, an open-sided, U-shaped upper pivot base 14 is provided with the opening facing downward, and at the peripheral edge at the bottom end of the saddle tube 13, two parallel extending ears are provided. 131 is installed, and the back fork 2 is connected thereto. The upper pivot table 14 on the extension step 111 corresponds to the back fork 2, and the opening corresponds to the lower pivot table 21 fixed to the upper pivot table 14 and facing upward. The vibration isolator 4 is set upright between the upper and lower pivot bases 14 and 21 by the pivot parts 5, and arc-shaped pivot portions 41 and 42 are formed at the upper and lower ends of the vibration isolator 4.

[0007] As a result, when traveling on an uneven road, the rear wheel 3 is interlocked with the back fork 2 and rotates around the pivoted ear 131 as shown in FIGS. 2 and 3, and is lifted upward. Further, the vibration isolator 4 installed on the lower pivot base 21 of the back fork 2 is compressed, and the back fork 2 draws an arc-shaped trajectory. 4 is completely compressed, no detachment occurs due to compression, and vibration is ensured.

In another embodiment of the present invention, as shown in FIGS. 4 and 5, in order to smoothly insert the upper and lower pivot portions 41, 42 of the vibration isolator 4 into the upper and lower pivot tables 14, 21, The protection surfaces 141 and 211 having an arc shape are formed. This completely protects and supports both ends of the upper and lower pivot portions 41 and 42 of the vibration isolator 4. In other words, if the peripheral edges of the upper and lower pivot portions 41 and 42 of the vibration isolator 4 are formed as flat surfaces, the protection surfaces 141 and 211 are also formed as flat surfaces. Therefore, the protection surfaces 141 and 211 are completely adhered to both ends of the vibration isolator 4, the receiving surface is increased, and the vibration is concentrated on the pivot point between the upper and lower pivot tables 141 and 211 and the vibration isolator 4. Can be avoided.

When assembling the vibration isolator 4, as shown in FIG. 5, the outer peripheries of the upper and lower ends pivot portions 41, 42 of the vibration isolator 4 are protected by the protection surfaces 141 installed on the vertical pivot tables 14, 21. When the vibration isolator 4 is actuated by operating the vibration isolator 4, the vibration isolator on the protection surface 211 is pushed up from the back fork 2 in conjunction with the lower pivot base 21, and the upper pivot table 14 is protected. Surface 141 is compressed to prevent vibration. When the vibration isolator 4 is compressed to prevent vibration, even if the pivot points of the vertical pivot tables 41 and 42 are broken or deformed, the vertical pivot tables 14 and 21 are reinforced.

[0010]

[Effect of the invention]

 As described above, in the bicycle according to the present invention, the upper pipe of the vehicle body extends upward from the front pipe of the vehicle body and is connected to the saddle pipe that stands upright at the rear, and further extends rearward to a predetermined length to form the extension step. Form. An upper pedestal will be installed at the periphery of the bottom of the extension step, and a pivot ear will be installed forward at the periphery of the bottom of the saddle tube. A back fork to which the rear wheel is connected is installed at the pivotal ear, and a lower pivot corresponding to the upper pivot at the extension is installed on the back fork, and between the upper pivot and the lower pivot. Is equipped with a vibration isolator vertically.

[0011] Therefore, when the vehicle passes on a non-planar road, the rear wheel rotates with the pivoted ear in conjunction with the back fork and is lifted up, and the vibration isolator on the lower pivot of the back fork is moved to the upper pivot. It has the characteristic of being compressed and absorbing vibration. This is effective in reliably absorbing vibration.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a bicycle according to an embodiment of the present invention.

FIG. 2 is a side view of the bicycle according to the embodiment of the present invention, which is not subjected to vibration.

FIG. 3 is a side view of the bicycle according to the embodiment of the present invention when the bicycle is subjected to vibration;

FIG. 4 is an exploded perspective view showing a bicycle according to another embodiment of the present invention.

FIG. 5 is a side view showing a bicycle according to another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Body 2 Back fork 3 Rear wheel 4 Vibration absorber 11 Upper pipe 12 Body front pipe 13 Saddle pipe 14 Upper pivot stand 21 Lower pivot stand 111 Extension step 131 pivot ear

Claims (2)

[Utility model registration claims] 1. An upper pipe of a vehicle body extends upward from a front pipe of the vehicle body and is connected to a saddle pipe which stands upright at the rear, extends rearward to a predetermined length to form an extension step, and a bottom of the extension step. An upper pedestal is installed at a peripheral edge, a pivot ear is installed forward at a peripheral edge at the bottom of the saddle tube, and a back fork to which a rear wheel is connected is installed at the pivot ear, and the back fork is attached to the back fork. A lower pedestal corresponding to the upper pedestal of the extension step is installed, a vibration isolator is installed vertically between the upper and the lower pedestal, and a non-planar road is provided. When passing, the rear wheel is linked with the back fork and can be rotated around the pivoted ear and lifted up, and the vibration isolator on the lower pivot of the back fork is connected to the upper pivot. A bicycle characterized by being compressed against vibration and absorbing vibration. 2. A protection surface is formed on inner surfaces of the upper pivot table and the lower pivot table to conform to upper and lower ends of the vibration isolator, and the upper pivot table and the lower pivot table are provided. The bicycle according to claim 1, wherein a pivot point between the table and the vibration isolator is reinforced.