JPH04351372A - Shift operation device - Google Patents

Abstract

PURPOSE:To provide light touch shift operation by lessening the sliding resistance of a cable. CONSTITUTION:A relay link 21 interlocking with a transmission in a case 3 is supported by a pivot 26 onto a mounting table 20 on one side of a hydraulic device 7. A shift lever 34 is installed inside of a rear wheel fender 12 on the other side of a seat 15. The shift lever 34 and relay link 21 are coupled interlockingly through a cable 35 curving gently.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gear shift operating device for a vehicle.

0002

[Prior Art] As a gear shift operating device for a vehicle such as an independent cabin type tractor, a gear shift lever is placed on the side of a seat, and this gear shift lever operates a gear shift device in a transmission case via a cable and an operating lever. There is something like this. Due to operational and structural requirements, the gear shift lever and the transmission case operating lever are often placed on opposite sides with the seat and transmission case in between.

0003

[Problem to be solved by the invention] When the gear shift lever and the operating lever are on opposite sides, the cable needs to be bent significantly, which increases the sliding resistance between the outer cable and the inner cable, which causes problems during gear shifting. The drawback was that it was difficult to operate. In view of such conventional problems, the present invention provides a speed change operation device that can reduce the sliding resistance of a cable and perform speed change operations easily.

0004

[Means for Solving the Problems] The present invention provides a vehicle in which a hydraulic device 7 for lifting and lowering a working machine is provided on a mission case 3 and a seat 15 is arranged above the hydraulic device 7. A relay link 21 interlocked with the transmission 17 is arranged on one side of the hydraulic system 7, a gear shift lever 34 is arranged on the other side of the seat 15, and the relay link 21 and the gear shift lever 34 are interlocked via a cable 35. They are connected.

[0005]

[Operation] When the gear shift lever 34 is operated, the relay link 21 moves via the cable 35, and the transmission device 17 linked to the relay link 21 is switched. A relay link 21 that interlocks with the transmission device 17 is provided on one side of the hydraulic device 7, and the relay link 21 and the speed change lever 34 are interlocked and connected via a cable 35.
There is no need to bend the cable 35 to a large extent.
The sliding resistance is small, making it easy to operate.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings. In FIG. 5, reference numeral 1 denotes a tractor body, which includes an engine 2, a transmission case 3, and the like. 4 is the rear wheel,
The transmission case 3 is supported via a rear axle case 5, an axle, etc. attached to both rear sides of the transmission case 3. 6 is a bonnet. Reference numeral 7 denotes a hydraulic device for lifting and lowering the working machine, which is mounted on the mission case 3 and has a pair of left and right lift arms 9 that rotate around an arm shaft 8 .

Reference numeral 10 denotes an independent cabin, which is mounted on the tractor body 1. The cabin 10 includes a floor plate 11, a pair of left and right rear wheel fenders 12, and a steering wheel 13, an instrument panel 14, a seat 15, and the like. A main transmission 16, an auxiliary transmission 17, etc. are built into the mission case 3, and three operating levers 18, which are interlocked with each shifter of the auxiliary transmission 17, are connected to the mission case 3 via an operating shaft 19. It is pivoted to the side wall.

Three relay links 21 are provided on one side of the front part of the hydraulic system 7 via a mounting base 20, and each relay link 21 is interlocked and connected to each operating lever 18 via a vertical rod 22. has been done. As shown in FIGS. 1 to 4, the mounting base 20 includes brackets 2 at both front and rear ends of the mounting plate 23.
4,25, the bracket 24
, 25, a pivot shaft 26 is inserted between the upper portions thereof in the front-rear direction. The mounting base 20 is connected to the hydraulic device 7 by two bolts 27.
It is attached to a mounting seat 28 formed on one side of the front part.

The three relay links 21 are connected to the central boss portion 2.
9 with links 30 and 31 fixed in an L-shape, and is fitted onto the pivot shaft 26 with a collar 32 interposed between the boss portions 29. As shown in FIG. 1, on the other side of the seat 15, a gear shift lever 34 is arranged via a mounting base 33 fixed to the inside of the rear wheel fender 12. The gear shift lever 34 is for auxiliary gear shifting, and is connected to three cables 35.
is connected to one end of the Each cable 35 has an outer 3
At the other end of this cable 35, the outer 36 is connected to a fixed plate 38, and the inner 37 is connected to the link 31 of each relay link 21. The fixing plate 38 is fixed onto the hydraulic device 7 with bolts 39. Note that the cable 35 is inserted into the hole 40 of the floor plate 11 while being gently curved.

In the above configuration, when changing gears, the gear lever 34 can be operated forward, backward, left, and right using its base as a fulcrum. That is, when the shift lever 34 is operated in the selection direction, it is linked to any one of the three cables 35, so the shift lever 34 is then operated in the shift direction. Then, one of the relay links 21 is operated via that one cable 35 and rotates around the pivot 26, so that movement is transmitted from this relay link 21 to one of the operating levers 18 via the rod 22. , the shifter of the sub-transmission device 17 is operated by the operating lever 18 via the operating shaft 19. Therefore,
The sub-transmission device 17 switches to the required gear position.

In this way, the relay link 21 is connected to the hydraulic device 7.
If it is provided on one side, there is no need to bend the cable 35 greatly, so the sliding resistance between the outer 36 and the inner 37 can be reduced, and the sub-transmission device 17 can be easily shifted by the gear shift lever 34. . Note that the relay link 21 and the actuation lever 18 may be connected by a cable.

0012

[Effect of the invention] According to the present invention, mission case 3
A relay link 21 interlocked with the transmission 17 in the seat 15 is arranged on one side of the hydraulic system 7, and a transmission lever 3 is arranged on the other side of the seat 15.
4, and the relay link 21 and the gear shift lever 34 are interlocked and connected via the cable 35, so there is no need to bend the cable 35 much compared to the conventional case, and therefore the sliding resistance of the cable 35 can be reduced. It is small and allows for easy gear shifting operations.

[Brief explanation of drawings]

FIG. 1 is a rear sectional view showing one embodiment of the present invention.

FIG. 2 is a side sectional view of a portion of the hydraulic system.

FIG. 3 is a plan view of a portion of the hydraulic system.

FIG. 4 is an exploded perspective view of the same relay link portion.

FIG. 5 is a side view of the tractor.

[Explanation of symbols]

1 Tractor body 3 Mission case 7 Hydraulic system 10 Cabin 12 Rear wheel fender 15 seats 17 Transmission device 18 Actuation lever 20 Mounting stand 21 Relay link 26 Axis 34 Gear shift lever 35 Cable

Claims (1)

[Claims] [Claim 1] In a vehicle in which a hydraulic system (7) for lifting and lowering a working machine is provided on the mission case (3) and a seat (15) is arranged above the hydraulic system (7), the mission case (3) A relay link (21) interlocked with the transmission (17) inside is arranged on one side of the hydraulic system (7), and a transmission lever (34) is placed on the other side of the seat (15).
These relay links (21) and the gear shift lever (3
4) are interlocked and connected via a cable (35).