JPH0138306Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a decompression device linked to a kickstarter, and more specifically, to a device that performs a decompression operation in conjunction with the operation of a kickstarter in a motorcycle.

The larger the engine capacity, the more difficult it is to start the engine due to air-fuel mixture compression resistance and other mechanical resistance. Therefore, even large displacement engines can be easily started by releasing the compression pressure for just a moment when the kicking force is taxing. The kickstarter-linked decompression device embodies this technical idea.

FIG. 1 shows a conventional kickstarter-linked decompression device. In this decompression device, a cam 2 is disposed on a kick starter shaft 1 so as to be non-rotatable but slidable in the axial direction.
is biased in one direction in the axial direction by a spring 3, and a guide plate 5 installed on a transmission case 4 or the like is brought into contact with the side surface of the cam 2. installed,
A cam follower 7 is formed on this rotating shaft so that the cam follower is always in contact with the cam 2, and one end of a decompression cable 8 is connected to the rotating shaft 6. In this device, the cam 2 is rotated by the rotation of the hard starter shaft 1 accompanying the starter operation of the hard starter lever 9, and the cam 2 is rotated via the cam follower 7 that is in contact with the large diameter cam surface 2a. The moving shaft 6 is rotated to pull the decompression cable 8, thereby performing a decompression operation. Thereafter, the cam 2 on the starter shaft 1 is guided by the guide plate 5 and slid in the other direction in the axial direction against the urging force of the spring 3, and the contact surface of the cam follower 7 with the cam 2 is moved against the small diameter cam. Switch to surface 2b. Thereafter, when the kick starter lever 9 returns, the cam follower 7 slides on the cam surface 2b and returns to its original position. In this way, when the kick starter lever 9 returns, no decompression operation is performed.

By the way, in such a decompression device, the rotation shaft 6 is installed parallel to the starter shaft 1, and its end is extended outward from the transmission case 4, etc., and the decompression cable 8 is connected to the end of the rotation shaft 6. Since one end is connected, it not only obstructs the operation of the hard starter lever 9, but also requires a cam with a complex-shaped cam surface, and displaces the cam follower 7 from the cam surface 2a to the cam surface 2b. The mechanism becomes complicated.

In view of these problems, the purpose of this invention is to
To provide a decompression device interlocked with a decompression device that does not cause any problem in the operation of a decompression starter lever and has a simple structure.

That is, in the present invention, the rotating shaft is arranged in a direction perpendicular to the kick starter shaft, and the pin is moved by pushing the pin away with the cam surface of the decompression lever arranged on the pick starter shaft, and the decompression cable is moved. At the same time, when the kick starter lever returns, the cam surface of the decompression lever comes into contact with the pin, and the decompression lever moves away from the pin to return to its original state, thereby achieving the above object.

The present invention will be described below with reference to embodiments shown in the drawings. FIG. 2 is a cross-sectional view showing the kickstarter-linked decompression device according to the present invention.
FIG. 3 is a longitudinal sectional view thereof.

In this decompression device, a decompression lever 12 is spline-coupled to a kick starter shaft 11, and a compression spring 14 is disposed between the lever 12 and the kick starter drive gear 13 to constantly bias the lever 12 in the direction of the transmission case 15. are doing.
The lever 12 has cam surfaces 16a and 16b formed by a pair of front and back sloped surfaces at its tip. On the other hand, in the transmission case 15, a rotation shaft 17 is connected to the rotation starter shaft 11.
It is installed so as to face in a direction perpendicular to the mission case 15, with one end facing inside the mission case 15 and the other end facing outside the mission case 15. A plate 18 is fixed to one end of the rotating shaft 17, and a pin 19 is implanted around the periphery of the plate. Moreover, at the other end of this rotation shaft 17,
A decompression cable connection plate 20 is fixed, and one end of a decompression cable (not shown) is connected to the plate. In this device, the plate 18 is biased in one direction by a spring (not shown), and its side end abuts against the stopper 21 of the transmission case 15, causing the pin 19 to face the cam surface 16a of the decompression lever 12. positioned in position. In addition, in FIG. 2, the reference numeral 22
is the kick starter lever, and 23 is the guide for the decompression cable.

Below, the operation of the kickstarter-linked decompression device according to the present invention will be explained, and its configuration will also be explained in detail.

When the hard starter lever 22 is operated, the hard starter shaft 11 is rotated along with the lever, and the decompression lever 12 is rotated along with the shaft.
is rotated. When the decompression lever 12 is rotated, the pin 1 is moved by the front cam surface 16a of the lever.
9 is moved from the position shown in FIG. 4a to the position shown in FIG. 4b, and the plate 18 is rotated accordingly. When the plate 18 is rotated in this manner, the rotation shaft 17 is rotated together with the plate, and a decompression operation is performed via the plate 20 and a decompression cable (not shown). Then, when the decompression lever 12 is further rotated,
As shown in FIG. 4c, the pin 19 is returned to its original position by the biasing force of a spring (not shown), and the plate 18 comes into contact with the stopper 21 and is stopped at its original position.

When the operation of the kick starter lever 22 is released, the kick starter shaft 11 is reversed as the kick lever returns, and the decompression lever 12 is rotated in the opposite direction along with the shaft.
Then, the back cam surface 16b of the decompression lever 12 comes into contact with the pin 19. However, pin 19
Since the plate 18 is in contact with the stopper 21, it remains in the position shown in FIG. 4d. Therefore, as the decompression lever 12 moves against the biasing force of the spring 14, its cam surface 16b escapes from the pin 19 and passes through the pin 19, as shown in FIG. 4d. . The decompression lever 12 that has passed through the pin 19 in this way is shown in FIG.
Return to the original position shown in .

As mentioned above, the kickstarter-linked decompression device according to the present invention has the rotating shaft installed in a direction perpendicular to the kickstarter shaft.
The mechanism and structure are simple because the rotation shaft is rotated by the engagement of the cam surface and the pin without interfering with the operation of the kick starter lever.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view showing the main parts of a conventional kickstarter-linked decompression device, FIG. 2 is a cross-sectional view showing the main parts of the kickstarter-linked decompression device according to the present invention, and FIG. Its longitudinal sectional view, FIG. 4, is a diagram explaining its operation. 11... Kickstarter shaft, 12... Decompression lever, 14... Spring, 15... Mission case, 16a, 16b... Cam surface, 17...
Rotation axis, 18...Plate, 19...Pin, 20
... Decompression cable connection plate, 21 ... Stopper, 22 ... Kick starter lever.

Claims (1)

[Scope of utility model registration request] A decompression lever having a cam surface at its tip is disposed on the kick starter shaft so as to be non-rotatable but slidable in the axial direction, and the decompression lever is urged in one direction in the axial direction by a spring. A rotation shaft is provided in a direction perpendicular to the starter shaft, a plate with a pin installed on the periphery is provided on the shaft, and the pin is positioned by a spring, so that the pin is connected to the cam of the decompression lever. one end of the decompression cable is connected to the rotating shaft, and the decompression lever is actuated by the rotation of the starter shaft accompanying the starter operation of the starter lever, and the cam of the decompression lever is When the cam surface passes through the surface, the pin is actuated to rotate the rotating shaft, thereby actuating the decompression cable to perform decompression operation, thereby reducing the stiffness caused by the release of the kick starter lever. Resetting the decompression lever by reversing the starter shaft,
During the return operation of the decompression lever, when the cam surface of the decompression lever comes into contact with the pin, the decompression lever moves against the biasing force of the spring, and the cam surface escapes from the pin and returns. A decompression device linked to a kickstarter is characterized by the following features: