JPS6011296Y2 - Bowden wire operating device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a Bowden wire operating device, particularly to a Bowden wire operating device suitable for use in operating a side clutch in a combine harvester or the like having an automatic direction control device.

Conventionally, this type of side clutch operating device includes a manual shifter for manually operating the clutch gear via a Bowden wire, and a separate automatic shifter, and a hydraulic actuator for operating the automatic shifter. It was locked on the outside of the case near the operating shaft.

Therefore, a large installation space is required for the hydraulic actuator outside the case near the operating shaft of the side clutch, and troubles may occur due to contamination due to leakage of hydraulic oil from the hydraulic actuator.

Therefore, in the present invention, one end of the inner wire is connected to a manually operated lever and the other end is connected to an operated device, and a hydraulic actuator is interposed in the outer wire, and the length of the outer wire is changed by the hydraulic actuator. It is an object of the present invention to provide a Bowden wire operating device which can be operated also by the outer wire, thereby eliminating the above-mentioned drawbacks.

Hereinafter, the present invention will be described in detail based on an embodiment shown in the drawings.

As shown in FIG. 1, the Bowden wire 1 consists of an inner wire 2 and an outer wire 3.

One end 2a of the inner wire 2 is connected to a side clutch operating lever 5 disposed in the driver's seat of a combine harvester or the like via a connecting metal fitting 6, and the other end 2b extends into the side clutch case 7 and is connected to a connecting metal fitting 8. is connected to.

Also, one end 3a of the outer wire 3 is attached to the machine frame 1 of the driver's seat.
0 by an outer receiver 11, and the other end 3a
is fixed to one end 13a of the piston 13 of the hydraulic actuator 12.

One end of the cylinder 15 of the hydraulic actuator 12 has a threaded portion 15.
A is formed, and a threaded portion 15a is screwed onto the case 7.

Further, the cylinder 15 has a protrusion 15b at its center, and the protrusion 15b fits into a recess 13b formed at the center of the piston 13.

Through holes 15c and 13c are formed in the protrusion 15b and the center of the piston, respectively.
The inner wire 2 passes through 13c.

Further, an oil chamber 16 is formed by the cylinder 15 and the piston 13, and the oil chamber 16 is kept oil-tight by an O-ring 17, and hydraulic oil can be supplied or discharged by a hose 18.

On the other hand, as shown in FIG. 2, a shifter support shaft 19 is held in the side clutch case 7, and a bell crank-shaped shifter 20 is freely supported on the support shaft 19 only by its rotation shaft.

A connecting fitting 8 fixed to the inner wire tip 2b is connected to a pin 20a provided at one end of the shifter 20, and a shifter pin 20b is provided at the other end.

As shown in FIG. 3, the shift turbine 20b has a steering shaft 2.
1, the clutch gear 22 is engaged with a recess 22a of a clutch gear 22 that is slidably supported by the wide tooth 22.
b and a claw 22c.

The wide teeth 22 can mesh with the internal teeth 23a of the drive gear 23, which is rotatably supported by the steering shaft 21, and the claws 2.
2c can engage with a fixing claw 26 fixed to the case 7 by a bolt 25.

Further, the wide teeth 22 mesh with a gear 28 fixed to the crawler drive shaft 27 of the combine, and even when the wide teeth 22 mesh with the internal teeth 23a of the drive gear 23, the clutch Even when the gear 22 is moved by the shifter 20 against the spring 30 and the pawl 22 is engaged with the fixed pawl 26, this relationship is maintained.

Note that two Bowden wires 1, a shifter 20, a clutch gear 22, and the like are provided on the left and right sides in order to operate the left and right roller drive shafts 27 separately.

Since the present invention has the above-described configuration, for manual operation, when the side clutch operating lever 5 is rotated in the direction of arrow A in FIG. 1, the outer wire 3 of the Bowden wire 1 is fixed at both ends. Therefore, the inner wire 2 is pulled in the direction of arrow C, and the shifter 20 is rotated about the support shaft 19 via the pin 20a.

As a result, the shifter 20b causes the clutch gear 22 to slide on the steering shaft 21 against the spring 30, and disengages the internal teeth 23a and wide teeth 22b of the drive gear 23.
The pawl 22c is engaged with the fixed pawl 26 to prevent inertial rotation of the clutch gear 22.

Therefore, until now, the drive gear 23 has been replaced by the left and right clutch gears 22.
The same-speed rotation was transmitted to the left and right crawler drive shafts 27 via the gears 28 and 28, but when one clutch gear is stopped, the combine harvester responds to the operation of one of the left and right operating levers 5. direction is controlled.

Next, to automatically control the direction of the combine harvester, a direction change command from one of the direction sensors (not shown) provided near the devider operates a solenoid valve (not shown), and a hydraulically actuated When hydraulic pressure is supplied to the oil chamber 16 of 12 through the hose 18, the piston 13 expands, and as a result, the distance between one end 3b of the outer wire 3 of the Bowden wire 1 and the other fixed end 3a of the wire 3 is shortened. In other words, the outer wire 3 moves in the direction in which the outer wire 3 becomes slack.

At this time, the clutch operating lever 5 is still in contact with the end of its guide groove and cannot be rotated in the direction of arrow B. Therefore, as the outer wire 3 is slackened, the tip 2b of the inner wire 2 is rotated in the direction of arrow C. will be moved to

As a result, the shifter 20 is rotated and the clutch gear 22 is operated in the same way as in the manual operation described above.

As explained above, according to the present invention, the hydraulic actuation device 12 is interposed in the outer wire 3, and the length of the outer wire can be changed by the hydraulic actuation device, so that the inner wire 2 can be operated. In addition to being able to be operated manually, it can also be operated automatically by hydraulically operating the outer wire 3.

In addition, since the hydraulic actuator 12 can be installed anywhere on the outer wire 3, it does not require a large installation space near the operated device such as a side clutch, and the entire device can be designed compactly by installing it at an appropriate location. can do.

Furthermore, leakage of hydraulic oil from the hydraulic actuator 12 is mainly caused by the protrusion 15b of the cylinder 15 and the recess 13b of the piston 13.
The hydraulic oil leaks from the hydraulic actuator into the inner wire through-holes 15c and 13c, and further flows into the inner hole of the outer wire 3, so that the hydraulic oil leaked from the hydraulic actuator is lubricating oil between the outer wire 3 and the inner wire 2. Therefore, the operating force of the Bowden wire 1 can be reduced.

[Brief explanation of the drawing]

Fig. 1 is a partially broken sectional view showing the Bowden wire operating device according to the present invention, Fig. 2 is a sectional view showing the operating part in which the invention is applied to a side clutch, and Fig. 3 is a sectional view showing the transmission part of the side clutch. FIG. DESCRIPTION OF SYMBOLS 1...Bowden wire, 2...Inner wire, 5...Manual operation lever (side clutch operation lever), 12...Hydraulic actuation device, 13. ... Zeston, 13b ... recess,
15...Cylinder 15b...Protrusion, 13c, 15c...Through hole, 20 Operated device (shifter).

Claims (1)

[Claims for Utility Model Registration] 1. In a Bowden wire consisting of an inner wire and an outer wire, one end of the inner wire is connected to a manual operation lever, the other end is connected to an operated device, and
A Bowden wire operating device in which a hydraulic actuator is interposed in an outer wire, and the length of the outer wire can be changed by the hydraulic actuator. 2. A utility model registration request in which a protrusion is formed in the center of the cylinder of the hydraulic actuating device, a recess is formed in the center of the piston, and a through hole for an inner wire is bored in these protrusions and in the center of the piston. The Bowden wire operating device according to scope 1. 3. The Bowden wire operating device according to claim 1 or 2, which is applied to the operation of a side clutch of a combine harvester having an automatic direction control device.