JPS6212107Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention is a hydraulic shock absorber that can easily adjust the spring load of a coil spring stretched around the cylinder outer circumference of a hydraulic shock absorber attached to a wheel of a two-wheeled vehicle. Relating to an adjustment device.

In a hydraulic shock absorber used in a cushion that supports the wheels of a two-wheeled vehicle, it is preferable that the damping force and spring load of the shock absorber can be adjusted depending on the road conditions or the driver's preference. Many proposals have been made as means for adjusting the coil spring load stretched around the outer periphery of the shock absorber, but most of them are
The position of the spring receiver fitted on the outer periphery of the cylinder is adjusted in multiple stages via cam means.
However, the rear suspensions used for the rear wheels of two-wheeled vehicles have problems such as being troublesome and requiring a lot of effort to adjust due to their installation location.Moreover, in recent years, the rear suspensions of motorcycles have been located under the seat, A so-called single damper has been developed that suspends the damper, but there is a problem in that it is almost impossible to adjust using conventional adjustment devices.

As a result of repeated efforts to create a device that could easily adjust the spring load, the inventor cut a gear on the other end of the adjuster with a cam surface and used a gear mechanism to adjust the movement of the cam surface. The present invention was created based on the discovery that the problem could be solved by doing the following.

Next, one embodiment of the present invention will be described based on the attached drawings. FIG. 1 is a side view of essential parts showing one embodiment of the device of the present invention, FIGS. 2, 3, and 4 are perspective views showing an embodiment of each member of the device of the present invention, and FIG.
The figure is a partially cutaway perspective view of an embodiment of the adjuster case.

1 is a cylinder of a hydraulic shock absorber, and 2 is a spring holder, which is fitted into the cylinder 1 so as to be slidable in the axial direction and locks one end of a coil spring 3 stretched around the outer periphery of the cylinder 1. are doing. 4 is a cylindrical adjuster A, and a cylinder 1 is disposed below the spring receiver 2.
A protrusion 7 extending in the axial direction is provided by cutting off a notch groove 6 that engages with a stopper 5 fixed in the axial direction, and the notch groove 6 engages with the stopper 5 to be slidable into the cylinder 1. It is exteriorized. Reference numeral 8 is a cylindrical adjuster B, which has a cam surface 9 that abuts the protrusion 7 at one end, and a gear 10 cut on the periphery of the other end. It is packaged in 1. 11 is an adjuster case,
Adjuster B8 so that one end covers gear 10.
A spur gear 12 that is fitted in the lower part and whose other end is fixed to the outer periphery of the cylinder 1 by welding or the like and meshes with the gear 10 is built in. It projects outside of the adjuster case 11 and is connected to a driving force transmitting means 15 (not shown) having a gear, a traction cable, etc. combined at its tip to transmit a driving force from the outside. Alternatively, the driving force transmission means may be such that the tip of the axle 13 is directly rotated using a tool such as a spanner.

Since the device of the present invention is configured as described above,
For example, if the axle 13 is equipped with a driving force transmitting means 15 that combines a gear and a pulley and can be remotely controlled from the outside using a tow cable, the spur gear 12 can be moved by pulling the tow cable to the right in the figure. When the adjuster B8 is rotated clockwise, the adjuster B8 is also rotated clockwise and the protrusion 7
Since the adjuster A4 comes into contact with the higher side of the cam surface 9, the rotation of the adjuster A4 is stopped by the stopper 5, so it slides upward in the figure to compress the coil spring 3, and the spring This will increase the load. When the tow rope is rotated in the opposite direction, the coil spring stretches and weakens the spring load, contrary to the above, and the spring load can be adjusted to any desired value by selecting the appropriate cam surface. .

In this invention, a gear is cut on the other end of the adjuster with a cam surface, and a gear that meshes with the gear is provided so that it can be operated from the outside of the device, so the spring load can be arbitrarily applied from the outside regardless of the installation position. It can be easily adjusted and has great effects, such as being easily applicable even in the case of a so-called single damper.

[Brief explanation of drawings]

FIG. 1 is a side view of essential parts showing an embodiment of the device of the present invention, FIG. 2 is a perspective view of an embodiment of the spring receiver and stopper of the device of the present invention, and FIG. A perspective view showing one embodiment, FIG.
FIG. 5 is a perspective view showing an embodiment of the adjuster B, and FIG. 5 is a partially cutaway perspective view showing an embodiment of the adjuster case. 1... Cylinder, 2... Spring holder, 3... Coil spring, 4... Adjuster A, 5... Stopper, 6
... Notch groove, 7 ... Protrusion, 8 ... Adjuster B, 9 ... Cam surface, 10 ... Gear, 11 ... Adjuster case, 12 ... Spur gear.

Claims (1)

[Scope of utility model registration request] In a hydraulic shock absorber in which a coil spring is stretched around the outer periphery of a cylinder and a spring holder for locking one end of the coil spring is arranged on the outer periphery of the cylinder, a cylinder 1, a coil spring slidably fitted into the cylinder 1, 3, a stopper 5 fixed to the outer periphery of the cylinder 1 in the axial direction below the spring receiver 2, and a protrusion extending in the axial direction by cutting out the notch groove 6 that engages with the stopper 5. Asiasta A4 is provided with a portion 7 and is mounted on the cylinder 1 so as to be slidable in the axial direction; Asiasta B8 is provided with a cam surface 9 that abuts the protrusion 7 on one end and has a gear 10 cut on the periphery of the other end; This spring load adjustment device for a hydraulic shock absorber is composed of an Asia star case 11 which has a built-in spur gear 12 which is fitted into an Asia star B8 and meshes with a gear 10, and whose other end is fixed to a cylinder 1.