JP2554398Y2 - Transmission remote control - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a remote control device for a transmission, and more particularly to a lubrication structure for a connection between an inner shaft and a cross shaft on the transmission side.

[0002]

2. Description of the Related Art In a vehicle such as a bus or a cab-over vehicle in which a transmission is separated from a gear shift lever in a cab, a gear shift lever cannot be directly connected to a transmission operation member on a transmission side. A remote control system is adopted in which the transmission and the transmission are remotely controlled by connecting the two via a connecting member such as a cable or a cable (Japanese Utility Model Publication No. 63-4823, Japanese Utility Model Publication No. 63-5061 and Japanese Utility Model Application Publication No. 63-5061). Showa 6055
No. 25, etc.).

In such a remote control device, an outer lever is connected to a gear shift lever in a cab via a rod or a cable, and the outer lever is integrally mounted, and the other end of a cross shaft, one end of which is supported by a vehicle body frame, is moved from the transmission side to the other end. An operation force of the gear shift lever is transmitted to the transmission side as a structure that is connected to one end of the inner shaft protruding to the outside. And, in order to absorb the relative movement between the vehicle body frame side and the transmission side, a connecting portion between the cross shaft and the inner shaft is connected by a universal joint.

This is a joint formed by providing a yoke at each connecting end of a cross shaft and an inner shaft, fixing a shaft to the yoke, and connecting two cylindrical members at right angles to each other on their outer surfaces. Is rotatably attached to the shaft portion. As a result, the relative movement in the up-down and front-rear directions between the vehicle body frame side and the transmission side is absorbed by the relative rotation operation between the joint and the shaft.

[0005]

By the way, in order to smoothly perform the relative rotation operation between the joint and the shaft, grease as a lubricant is filled in a gap between the inner periphery of the joint and the outer periphery of the shaft. I have. However, in the past, there was nothing to seal simply by filling the gap between the joint and the shaft with grease, and since the filling space was also small, the amount of grease that could be filled was insufficient, and immediately Grease flows out and the sliding resistance between the two is likely to increase. In addition, since it is easy for rust and the like to stick to each other, it is necessary to attach a boot to the connecting portion between the cross shaft and the inner shaft, and there has been a problem that the cost is high and the number of assembly steps is large.

The present invention has been made in view of the above circumstances, and has a structure in which a lubricant filled in a gap between a joint and a shaft can be maintained for a long period of time. It is an object of the present invention to provide a transmission remote control device with a small number of steps.

[0007]

SUMMARY OF THE INVENTION For this reason, according to the present invention, an outer lever connected to a gear shift lever provided in a driver's cab via a connecting member is integrally mounted, and one end is connected to the other end of a cross shaft supported on the vehicle body frame side. A yoke is provided, a yoke is provided at one end of an inner shaft projecting outward from the transmission side, and a joint formed by connecting two cylindrical members at right angles to each other on an outer surface thereof is turned around a shaft fixed to each of the yokes. By freely mounting,
In a remote control device for a transmission configured to transmit an operating force of the gear shift lever to a transmission side, a peripheral groove is formed at a central portion and at both ends near at least one of an inner periphery of the joint and an outer periphery of the shaft portion, and a peripheral groove near both ends is provided. An O-ring is attached to each of the O-rings, and the gap between the inner periphery of the joint between both O-rings and the outer periphery of the shaft is filled with a lubricant.

[0008]

According to this structure, the lubricant filled in the gap between the inner periphery of the joint and the outer periphery of the shaft is sealed by the O-ring and can be prevented from flowing out. In addition, since a groove is provided in at least one of the inner periphery of the joint and the outer periphery of the shaft portion of the lubricant filling portion, a sufficient amount of grease can be filled.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 showing a first embodiment of the present invention, a cross shaft 2 having one end supported on the body frame 1 side and extending in the left-right direction of the vehicle is connected to a gear shift lever (not shown) provided in a cab by a connecting member. An outer lever 3 connected via a certain rod or cable is attached. At the other end of the cross shaft 2, a substantially U-shaped yoke 4 is provided. In the yoke 4,
One cylindrical member 5A of a joint 5 formed by welding two cylindrical members 5A and 5B at right angles to each other on their outer surfaces.
Is rotatably mounted on a bolt 7 which is fastened and fixed to the yoke 4 by a nut 6 with a collar 8 interposed therebetween. A circumferential groove 8 is provided at the center and both ends of the collar 8.
a to 8c are formed, and as shown in FIG. 1, O-rings 9 are attached to the circumferential grooves 8b and 8c at both ends, and a lubricant is filled in the gap between the inner circumference of the joint 5A and the outer circumference of the collar 8. Grease 10 is sealed.

The other cylindrical member 5B of the joint 5
Also, a yoke (not shown) on the inner shaft side, which is rotatably protruded from the transmission side, through a collar 11 having bolts and peripheral grooves 11a to 11c and an O-ring 12 similar to the above-described cross shaft 2 side. ). Thereby, the gear shift lever side and the transmission side are connected via the joint 5, and the operating force of the gear shift lever is transmitted to the transmission side.

The cross shaft 2 is provided with a weight 14 via a bracket 13 extending in the front-rear direction of the vehicle to increase the mass of the gear shift operation system to increase the initial operation force at the time of the gear shift operation, thereby providing a two-stage feeling. The gear shift lever operation feeling is improved by reducing such factors. The operation of the shift operation system having such a configuration is such that, when the gear shift lever is shifted in the front-rear direction of the vehicle, the outer lever 3, the cross shaft 2, and the inner shaft (not shown) rotate integrally, and the shift fork or the shift fork is transmitted through the shift lever in the transmission. By moving the shifter, the gear is shifted to a desired shift speed. The vertical relative movement between the body frame side and the transmission side due to the vehicle vibration is absorbed by the rotation of the cylindrical member 5A of the joint 5 on the collar 8, and the relative movement in the front-rear direction is determined by the cylindrical member of the joint 5. 5B is absorbed by rotating on the collar 11.

In this embodiment, the cylindrical member 5
Since the filled grease 10 is sealed by the O-rings 9 and 12 by providing grooves 8a in the gaps between the collars A and 5B and the collars 8 and 11, the grease 10 can be prevented from flowing out. It is also possible to prevent water or the like from entering the gap from the outside. Therefore, it is possible to maintain good lubricity and rust prevention over a long period of time as compared with the conventional structure, and further, it is possible to eliminate the need for a protective boot, thereby reducing costs and reducing the number of assembly steps.

In the first embodiment, the collar is interposed between the joint and the bolt. However, the collar is omitted by using the stepped bolt 15 as in the second embodiment shown in FIG. And joint 5 directly to the bolt 15
May be attached. In this case, the circumferential grooves 5a to 5c are provided on the cylindrical member 5A side of the joint 5.
May be formed. Although FIG. 3 illustrates only the cross shaft side, the same applies to the transmission inner shaft side.

[0014]

As described above, according to the present invention, it is possible to prevent the lubricant from flowing out at the connecting portion between the cross shaft and the inner shaft and to fill a sufficient amount of the lubricant. As a result, lubricity and rust prevention can be maintained satisfactorily, and the durability of the connecting portion can be improved. Further, no boot is required, and the cost and the number of assembly steps can be reduced.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part showing a first embodiment of the present invention.

FIG. 2 is an exploded perspective view of a main part of the embodiment.

FIG. 3 is a sectional view of a main part showing a second embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Body frame 2 Cross shaft 3 Outer lever 4 Yoke 5 Joint 5a-5c Peripheral groove 6 Nut 7 Bolt 8,11 Collar 8a-8c, 11a-11c Peripheral groove 9,12 O-ring 10 Grease

Claims (1)

(57) [Scope of request for utility model registration] An outer lever connected to a gear shift lever provided in a cab via a connecting member is integrally mounted, a yoke is provided at the other end of a cross shaft having one end supported on a vehicle body frame side, and protrudes outside from a transmission side. A yoke is provided at one end of the inner shaft, and a joint formed by connecting two cylindrical members at right angles to each other on their outer surfaces is rotatably attached to shafts fixed to the respective yokes, so that the gear shift lever can be rotated. In a remote control device for a transmission configured to transmit an operating force to a transmission side, a peripheral groove is formed in a central portion and near both ends of at least one of the inner periphery of the joint and the outer periphery of the shaft portion, and O-rings are respectively formed in the peripheral grooves near both ends. With both O
A remote control device for a transmission, wherein a lubricant is filled in a gap between an inner periphery of a joint between rings and an outer periphery of a shaft portion.