JPS6232905Y2 - - Google Patents

Description

[Detailed Description of the Invention] (a) Field of Industrial Application The present invention relates to a neutral position regulating device that fixes a gear shift lever at a neutral position so that it does not move.

(b) Conventional technology Conventionally, the column shift technology in which the gear shift lever is placed below the steering wheel is
A technique such as that disclosed in Japanese Utility Model Publication No. 51-48106 is known, and a technique for regulating the rotation of the gear shift lever by providing a regulating plate on the gear shift lever guide plate was also developed in the Japanese Utility Model Publication No. 1987-48106.
The technique is known as disclosed in Japanese Patent No. 53-93835.

(c) Problems to be solved by the invention The neutral position regulating device is a device to avoid danger when getting on and off the tractor with the engine running. By locking the device, even if the gear shift lever accidentally touches the operator's body, it will not shift into the gear position and prevent a sudden start.

In such a neutral position regulating device, the present invention particularly relates to the configuration of a regulating protrusion that prevents the neutral position regulating stopper from being released accidentally. The fitted cover is made of resin, this cover constitutes a regulating protrusion, and a double or triple safety device is provided to prevent the stopper from being released accidentally.

(d) Means for solving the problem The purpose of the present invention is as described above. Next, the configuration for achieving the purpose will be explained.

A cover 8 is fitted from above onto a shift lever guide plate 9 that regulates the rotational position of the shift lever 1, and a stopper passes through the shift lever guide plate 9 and the cover 8 to regulate the neutral position of the shift lever 1. 10
protrudes to the outside of the cover 8, and the stopper 10
A stopper lever 7 that rotates up and down to regulate and release the stopper lever 7 is attached to the protruding end, and the stopper lever 7
Regulation protrusions 8a and 8b for regulating the movement of the stopper lever 7 protrude to the left and right positions of the stopper lever 7 on the surface of the cover 8, and the stopper lever 7 is configured to be rotatable at a position above the regulation protrusions 8a and 8b.

(E) Embodiment The purpose and structure of the present invention are as described above, and the structure of the embodiment shown in the attached drawings will be explained.

FIG. 1 is a side view of the gear shift lever device, FIG. 2 is an enlarged plan sectional view of the gear shift lever device support portion, FIGS. 3 and 4 are a side view and a plan view of the cover 8, and FIG. 5 is a gear lever guide. 9 is a side view of the integrated support tube 4, and FIG. 6 is a side view of the stopper 10.

A speed change lever guide 9 is fixed on a dart board 3, and a support cylinder 4 is suspended from the speed change lever guide 9 and fixed downward onto a steering gear box mounting table. The gear lever shaft 1 is disposed within the support cylinder 4.
5 is loosely fitted to the lowermost arm 22 of the gear shift lever shaft 15 via a ball joint 21.
A connecting link 5 is interposed, and the connecting link 5 is connected to the arm 6 of the transmission via a turnbuckle device 19 and a ball joint 20. A connecting link cover 22 that covers the connecting link 5 is
It is located in the center of the left and right steps in front of the seat.

The transmission may be a hydraulic valve of a hydraulic clutch type transmission or a shift fork operating body of a gear sliding type transmission.

Referring to FIG. 2, the detailed structure of the gear shift lever support device will be explained.

As shown in FIG. 5, the gear shift lever guide 9 is integrally welded and fixed to the support tube 4.
is passed through the insertion hole of the dash board, and the rotation is fixed with a bolt 13.

With the shift lever guide 9 and support tube 4 fixed to the dart board 3, the shift lever 15 is loosely fitted into the support tube, and the aforementioned arm 22 is fixed to the lower end of the shift lever shaft 15 to prevent it from coming off. Let's do it.
The tip pivot cylinder 1a of the shift lever 1 is fitted into the U-shaped portion at the upper end of the shift lever shaft 15, and the pivot pin 14 is inserted.
Supported by. A biasing spring 11 is interposed between the front and rearward protrusions of the pivot pin 14, and the shift lever 1 is biased so as to always fall into the neutral guide groove 9a of the lever guide groove 9b of the shift lever guide 9. That's what I'm doing. However, even with this, an unexpected mistake caused the operator's body to come into contact with the shift lever 1, causing the gear shift lever 1 to protrude from the neutral guide groove 9a, resulting in an accident in which the tractor suddenly started.

In order to eliminate this mistake, a stopper 10 as shown in FIG. 6 is provided so that the shift lever 1 cannot come out when it is in the neutral guide groove 9a. When the notch 10a of the stopper 10 faces downward, the shift lever 1 can freely move within the lever guide groove 9b, but when the notch 10a faces downward, the shift lever 1 moves into the neutral guide groove 9a. You can't go in and come out.

The stopper 10 is operated by rotating the stopper lever 7, which is provided at a portion that protrudes through the speed change lever guide 9 and the cover 8. However, if the stopper lever 7 moves due to vibration or its own weight, or if it touches the operator's body and rotates, the stopper lever 7 may naturally move to the release position, so the stopper lever 7 may move upward. fart
The regulating protrusions 8a, 8 are attached to the cover 18 so that it can only be rotated by 180 degrees and cannot be rotated downward.
b protrudes from the lower surface of the stopper lever 7. Even if the operator makes a mistake and touches it from below, the stopper lever 7 will not be able to rotate because it touches the regulating protrusions 8a, 8b, and even if the stopper lever 7 tries to go down due to vibration, it will not come down because of the regulating protrusions 8a, 8b.

8e and 8f are holes 9c and 9 of the gear shift lever guide 9.
This is a protrusion that fits into the hole d and fixes the cover 8.

FIGS. 7 and 8 are a side view and a rear view showing another embodiment of the connecting link.

The connecting link is located at a position where the operator steps through the seat when sitting on the seat, and if the connecting link cover 22 is raised, it becomes difficult to get on and off the seat.

In this configuration, the connecting link 18 is bent upward from the point where it enters the dash board side cover at the tip, and until then it is horizontal, and the connecting link 22
It has the advantage that it can be constructed with a low value. 2
3 is a transmission case.

(f) Effects of the invention Since the invention is constructed as described above, it has the following effects.

Firstly, as a device to prevent personal injury caused by the shift lever entering the forward/forward shift position,
a biasing spring 11 that biases the gear shift lever 1 toward the neutral side;
In addition, a stopper 10 that restricts the shift lever 1 from coming out from the neutral guide groove 9a, and restriction protrusions 8a and 8 that restrict the stopper lever 7 that operates the stopper 10 from moving in the release direction.
(b) Since we were able to provide a three-stage safety device, we were able to create a safe tractor that would not suddenly start even when getting on and off with the engine running.

Second, the regulating protrusions 8a, 8b protrude from the cover 8, and the stopper lever 7 is configured to rotate up and down above the regulating protrusions 8a, 8b, so that the stopper lever 7 can be rotated to the locked state once. In order for the par lever 7 to release naturally, it is necessary to move upwards and make a half turn, and since it is in the upward direction, it is configured to be less likely to release naturally compared to when it falls due to its own weight. be.

Thirdly, cover 8 is placed on top of gear shift lever guide plate 9.
By covering the shift lever guide plate 9, the poor design of the gear shift lever guide plate 9, which must be made of a steel plate in order to maintain its strength, can be compensated for by the cover 8 made of synthetic resin, etc., and the above-mentioned safety device The regulating protrusions 8a and 8b forming part of the structure can be configured to protrude.

[Brief explanation of the drawing]

FIG. 1 is a side view of the gear shift lever device, FIG. 2 is an enlarged plan sectional view of the gear shift lever device support portion, and FIG.
4 is a side view and a plan view of the cover 8, FIG. 5 is a side view of the integrated gear shift lever guide 9 and support tube, FIG. 6 is a side view of the stopper 10, and FIG.
8 and 8 are side views showing other embodiments of the connecting link. 1... Gear shift lever, 7... Stopper lever,
8...Cover, 8a, 8b...Regulation protrusion, 9...
Gear shift lever guide plate.

Claims (1)

[Scope of utility model registration request] A cover 8 is fitted from above onto a shift lever guide plate 9 that regulates the rotational position of the shift lever 1, and a stopper passes through the shift lever guide plate 9 and the cover 8 to regulate the neutral position of the shift lever 1. 10
protrudes to the outside of the cover 8, and the stopper 10
A stopper lever 7 that rotates up and down to regulate and release the stopper lever 7 is attached to the protruding end, and the stopper lever 7
Regulation protrusions 8a and 8b for regulating the amount of water protrude from the cover 8 to the left and right positions of the stopper lever 7, and the stopper lever 7 is configured to be rotatable at a position above the regulation protrusions 8a and 8b. Neutral position regulating device for the gear shift lever.