JPH0728034Y2 - Main clutch of control machine and continuously variable transmission - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a main clutch of a management machine in which the operation of the main clutch and the belt type continuously variable transmission can be operated on the handle side by one operating lever, and The present invention relates to a continuously variable transmission operating device.

[Prior Art] Conventionally, a belt type continuously variable transmission is equipped,
In a management machine that is equipped with an operating lever for operating the main clutch on the handle side, the belt type continuously variable transmission is
The structure is such that the gear shift operation lever is provided separately from the operation lever for operating the main clutch.

[Problems to be solved by the invention] Therefore, since the stepless speed change operation and the main clutch operation are performed by separate levers, the operation procedure becomes difficult, and the handle side has a complicated structure due to the provision of both levers. It had such a problem.

[Means for Solving the Problem] The present invention solves such a problem and enables the turning operation of the operation lever to be performed immediately. Therefore, the operation lever pivotally supported rotatably. A fan-shaped cam plate having a plurality of recesses on the periphery is fixedly installed on the base side of the, and an operation linked to the pulling gear shift wire for adjusting and operating the split pulley of the continuously variable transmission and the pulling clutch main clutch wire A detent capable of connecting a wire to the cam plate and engaging with a recess of the cam plate,
It is constructed so as to be vertically movable so that it can be rotated downward by pushing down the upper off lever.

[Operation] Therefore, when the operation lever is rotated, the main clutch can be turned on and off, and the belt transmission continuously variable transmission operation can be performed. By engaging the detent with the concave portion of the cam plate, The operating lever can be locked at the desired turning position, and
When the off lever is pushed down, the main clutch can be immediately turned off while the detent is rotated downward to release the lock.

Example Next, an example shown in the drawings will be described.

Fig. 2 shows a side view of the management machine, with both wheels (1
3) The engine (15) is mounted in front of the mission case (14), and the mission case (14)
The handle (2) is extended from the upper part to the rear of the machine.

Further, the belt type continuously variable transmission (A) is provided with an engine (15).
Belt (21) on the split pulley (5) on the drive shaft (16), the input pulley (18) on the input shaft (17) of the mission case (14), the guide roller (19) and the tension roller (20). And install one side of the split pulley (5) into the spring (2
2) The elastic force is applied in the axial direction by means of 2), and the split pulley (5) is installed and configured so that the split pulley (5) can be expanded and narrowed through the cam (25) by the rotation of the cam (24) having the adjustment arm (23). , A belt cover (26) is attached to them, a speed change wire (6) which is a pulling hand is connected to the adjustment arm (23), and the main clutch provided on the input shaft (17) pulls it. The main clutch wire (7) is arbitrarily extended and constructed.

An operation case (27) is erected on one side near the handle side of the handle (2), and a double shaft is attached to a spindle (29) which is horizontally installed on a bracket (28) in the operation case (27). (30) (3
1) is rotatably fitted, the base of the operation lever (1) is fixed to the inner cylinder (30), and a plurality of recesses (3) are provided on the periphery.
The fan-shaped cam plate (4) having the
The roller (33) is fixed to the base of the operation lever (1), and is attached to the support shaft (32) projecting on the inner side of the cam plate (4).
And the operation wire (8), which is freely connected to the speed change wire (6) and the main clutch wire (7), is connected to the lower end of the cam plate (4) through a connecting tool. Configure.

Both cylinders (36) and (37) are fitted to the support shaft (35) which is horizontally mounted on the bracket (28), and the inner cylinder (36) is joined to the lower part of the roller (33). The base of the lever (38) and the tip of the long on-lever (11) are fixed to each other, and the outer cylinder (37) has a compression spring (9a) and a ball (9b). The base of the detent (9), which is elastically pressed so that it can be engaged with 3), is fixed, and the tip of the long off-lever (10) is fixed on the upper part of the barrel (31). The lower surface of the part has a lower end surface (39a)
The upper part of the push-down rod (39) that can contact the upper surface of the detent (9) is fixedly constructed.

Therefore, as shown in FIG. 1, when the operation lever (1) is rotated to the (a) position, the operation wire (8) can be loosened and the main clutch can be turned off.
When the operation lever (1) is rotated to the (b) position, the operation wire (8) can be pulled in the direction of the arrow (c) to operate the main clutch, and the operation lever (1) can be turned on. In the state where the gear is positioned between the (a) position and the (b) position, the shift wire (6) is moved by the operation wire (8).
It is possible to operate the split pulley (5) while pulling the lever a little to reduce the effective diameter of the belt (21) to shift gears. Further, rotate the operating lever (1) in the direction of arrow (d). When it is moved, the adjustment wire (6) is pulled by the operation wire (8) and the adjustment arm (23) is rotated in the direction of the arrow (e) to operate the split pulley (5),
By increasing the effective diameter of the belt (21), it is possible to shift at high speed.

In that state, the detent (9) is pulled and elastically engaged with the recess (3) of the cam plate (4),
The operating lever (1) can be held in each position,
In the state where the operation lever (1) is rotated, the detent (9) is pushed out of the recess (3) to rotate, and when the off lever (10) is pushed down with a fingertip as indicated by an arrow (f). , The lower end surface (39a) of the push-down rod (39) rotates the detent (9) downward as indicated by the arrow (g), so that the detent (9) is disengaged from the recess (3), and the operation lever is kept as it is. (1) is the operation wire (8)
It is possible to immediately turn the main clutch off by turning the belt (21) conduction to the off state by rotating the belt (21) to the (a) position side by pulling.

Further, when the operation lever (1) is located on the main clutch off side, when the on-lever (11) is pushed down with the fingertip in the direction of the arrow (h), the lever (38) moving upward is joined to the roller (33). The main clutch can be immediately turned on while rotating the cam plate (4).

Incidentally, FIG. 10 shows another embodiment, which is substantially the same as the above-mentioned embodiment as indicated by the same reference numeral, but the detent (9) is elastically biased upward by the tension spring (40),
The roller (41) integrated with the barrel (37) is installed above, and when the off lever (10) is pushed down, the detent (9) is pushed down while pushing down the roller (41). It can be rotated.

[Effects of the Invention] As described above, according to the present invention, the main clutch is turned on / off and the belt transmission continuously variable adjustment is operated by rotating one operation lever (1) on the handle (2) side. The operation lever (1) can be favorably locked at a desired turning position by the engagement of the detent (9), and the upper off lever (10) can be operated. By simply pushing down with your fingertips, you can immediately turn off the main clutch while releasing the detent (9) in a good condition, and ensure stable and stable operations at the handle (2) side. It has a feature that it can be carried out quickly and easily, and can be suitably implemented with a simple structure.

[Brief description of drawings]

FIG. 1 is a side view of an essential part of an embodiment of the present invention, FIG. 2 is a side view of a management machine, FIG. 3 is a side view of a belt type continuously variable transmission, and FIG. Sectional view, FIG. 5 is a plan view of a part of FIG. 1, FIGS. 6 and 7 show a part of FIG. 1, and FIG. 8 is a longitudinal sectional view of a part of FIG. FIG. 9 shows a part of FIG. 1, and FIG. 10 shows another embodiment. (A) ...... Belt type continuously variable transmission (1) ...... Operating lever, (2) ...... Handle (3) ...... Recess, (4) ...... Cam plate (5) ...... Split pulley, (6) ...... Shift wire (7) ...... Main clutch wire (8) ...... Operation wire, (9) ...... Detent (10) ...... Off lever

Claims (1)

[Scope of utility model registration request] 1. A management machine comprising a belt type continuously variable transmission (A) and an operating lever (1) for operating a main clutch on a handle (2) side. A fan-shaped cam plate (4) having a plurality of recesses (3) at the periphery is fixedly provided on the base side of the supported operation lever (1), and a split pulley (5) of the continuously variable transmission (A) is provided. ) Is connected to the cam plate (4), and the operation wire (8) linked to the pulling gear shifting wire (6) for adjusting and adjusting the pulling hand) and the pulling main clutch wire (7) are connected to the concave portion of the cam plate (4). A main clutch and a continuously variable transmission, characterized in that a detent (9) engageable with (3) is constructed so as to be vertically movable so that it can be rotated downward by pushing down an upper off lever (10). .