JPH0356689Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a remote control gear mechanism for a gear transmission in a vehicle.

[Prior Art] Remote control of a cable-type gear transmission in which the operation of the gear shift lever is transmitted to the gear transmission via a remote control cable when the operator's cab is located away from the gear transmission. As a mechanism, there is one disclosed, for example, in Japanese Utility Model Application Publication No. 59-32522. In this conventional technology, the outer cable of a remote control cable consisting of an outer tube and an inner cable inserted through the outer tube is used as a guide to transmit the select operation of the gear shift lever as a rotational motion of the inner cable, and the shift operation of the gear lever is transmitted to the inner cable. The axial motion of the motor is transmitted to the gear transmission. In this way, when the gear transmission mechanism is operated by rotating and pushing/pulling the inner cable, if the inner cable is long, twisting will occur in the middle, and the selection operation of the gear shift lever will not be applied to the gear transmission. There is a tendency that it is not communicated sufficiently. In addition, when the inner cable is operated to shift the gear shift lever, the connecting part between the inner cable and the gear shift lever moves slightly in the vertical direction, so the inner cable is slightly curved at the part where it protrudes from the outer tube, and the sliding at this part is caused. The movement may not be smooth and the inner cable may be bent.
Alternatively, problems such as wear of the inner cable may occur after long-term use.

[Problems to be solved by the invention] In view of the above-mentioned problems, the purpose of the invention is to use an outer cable with high torsional rigidity so that the rotational movement caused by the selection operation of the gear shift lever and the axial movement caused by the shift operation are caused by the inner cable. reached as a guide,
To provide a remote control mechanism for a gear transmission in which an outer cable is smoothly guided in the axial direction of the inner cable without being bent at a portion where the inner cable projects from the outer cable.

[Means for Solving the Problems] In order to achieve the above object, the configuration of the present invention is such that the rotating shaft to which the end of the outer cable is connected is rotatably and axially slidably supported on the bracket. The middle part of the gear shift lever is tiltably supported on a tilting body that can tilt around the drive shaft, and a rod that is inserted through the rotation shaft and connected to the end of the inner cable is fixed to the bracket, and the lower end of the gear shift lever is fixed to the bracket. is engaged with a horizontal pin provided on the rotation shaft.

[Operation] When the shift lever 10 is tilted to the side, the hollow rotating shaft 5 having the pin 18 that engages with the split groove 17a provided in the lower end bifurcated portion 17 is rotated together with the tilting body 9, and the outer cable 3 is rotated and transmitted to the transmission mechanism of the gear transmission, and a select operation is achieved.

Next, when the shift lever 10 is tilted forward or backward, the rotation shaft 5 is pulled or pushed in the axial direction due to the engagement between the bifurcated portion 17 and the pin 18, and the outer cable 3 is pushed or pulled to shift gears. The signal is transmitted to the machine's transmission mechanism and a shift operation is achieved.

[Example of the invention] The invention will be explained based on an example. As shown in FIG. 1, a board 19 fixed to the floor panel
A bracket 7 is constructed by joining a pair of end walls 7a to the cylindrical portion 8 of one end wall 7a, and a hollow rotation shaft 5 is rotatably and slidably supported on the cylindrical portion 8 of one end wall 7a via a bush 6. The end portion of the outer cable 3 is coupled to the end portion of the outer cable 3. This outer cable 3 is coated with a coating 3a.

A hollow shaft portion 25 of the tilting body 9 is rotatably supported by the cylindrical portion 8 of the other end wall 7a via the bush 6. A rod 1 is connected to the rotation shaft 5 through a sleeve 20.
6 is inserted so as to be relatively slidable, and this one end (left end)
The inner cable 2 is coupled to the inner cable 2. A liner 2 is placed between this inner cable 2 and outer cable 3.
a to ensure smooth sliding inside the outer cable 3. The other end (right end) of the rod 16 is inserted into the hollow shaft portion 25 and fixed by screwing together a pair of nuts 15 so as not to move in the axial direction.

The tilting body 9 has an inverted U-shape in cross section,
A boss portion 23 is formed on one end wall 9a, and this boss portion 23 is fitted onto the rotation shaft 5. other end wall 9
The above-mentioned hollow shaft portion 25 is integrally formed in a. A spherical bearing 24 is supported on the ceiling wall 9b of the tilting body 9. That is, an opening 14 is provided in the top wall 9b, and a cylindrical portion 12 is formed to surround this opening 14, and a spherical bushing 13 consisting of two parts is located inside the cylindrical portion 12, and the spherical portion 11 of the speed change lever 10
are fitted so as to sandwich them. This spherical bush 13 is held down by a retaining ring 21 that is locked to the cylindrical portion 12 so that it does not come off. In this way, the spherical portion 11 formed at the intermediate portion of the gear shift lever 10 is connected to the spherical bearing 2.
4 is supported by the tilting body 9. Gear shift lever 10
The lower end side extends downward from the opening 14 of the ceiling wall 9b,
It is coupled to a bifurcated portion 17 that straddles the rotation shaft 5. A split groove 17a is provided in the bifurcated portion 17, and a pin 18 that engages with the split groove 17a is fixedly supported by the rotation shaft 5.

It is preferable that the portion of the rotating shaft 5 where the bifurcated portion 17 straddles has a rectangular cross section and is engaged with the inside of the bifurcated portion 17, so that when the shift lever 10 is tilted to the side, the rotating shaft 5 is moved. It is configured to rotate integrally with the bifurcated portion 17.

Next, the operation of the remote control mechanism for a gear transmission according to the present invention will be explained. When the shift lever 10 is tilted laterally (in a direction perpendicular to the plane of the drawing), the tilting body 9 also rotates about the rotation shaft 5 and the hollow shaft portion 25 integrally with the shift lever 10. At this time, the split groove 17a of the bifurcated portion 17 that straddles the rotation shaft 5 and the pin 18
Due to the engagement, the rotation shaft 5 also rotates together, and this rotation is transmitted to the transmission mechanism of the gear transmission through the outer cable 3, and a selection operation is achieved.

Next, when the shift lever 10 is tilted back and forth (left and right in FIG. 1), the shift lever 10 is tilted around the spherical bearing 24, and the pivot shaft 5 having the pin 18 that engages the forked portion 17 engages the bush 6. slide to the left or right. This movement of the rotation shaft 5 is transmitted to the transmission mechanism of the gear transmission through the outer cable 3, and a shift operation is achieved.The inner cable 2 does not move in response to the operation of the gear shift lever 10, Guide rotation and axial movement.

[Effects of the invention] As described above, the present invention supports a rotating shaft to which the ends of the outer cable are connected to a bracket so as to be rotatable and slidable in the axial direction. The middle part of the gear shift lever is tiltably supported on the body, the rod inserted through the rotating shaft and connected to the end of the inner cable is fixed to the bracket, and the lower end of the gear lever is attached to the rotating shaft in the axial direction. Since the outer cable is engaged with the pin, the outer cable is rotated together with the rotation shaft by a select operation of the speed change lever, and the outer cable is moved in the axial direction together with the rotation shaft by a shift operation of the speed change lever. Since the outer cable has better torsional rigidity than the inner cable, the operation of the gear shift lever is reliably transmitted to the gear shift mechanism of the gear transmission. At this time, since the rotating shaft is guided along the rod, the operation is extremely smooth and reliable.

Since there is no part of the inner cable exposed to the outside from the outer cable, there is no risk of damage to the inner cable, and there is no problem in operating the gear shift lever. Since the overall configuration is simple, it helps reduce the weight and cost of the transmission mechanism.

[Brief explanation of the drawing]

FIG. 1 is a side sectional view of a remote control mechanism for a gear transmission according to the present invention. 2... Inner cable, 3... Outer cable, 5... Rotating shaft, 7... Bracket, 9... Tilting body, 10... Speed change lever, 17... Bifurcated portion, 1
8...pin, 24...spherical bearing.

Claims (1)

[Scope of utility model registration request] A rotating shaft connected to the end of the outer cable is rotatably and axially slidably supported on the bracket,
The middle part of the gear shift lever is tiltably supported on a tilting body that can tilt around the rotation axis, and the rod that is inserted through the rotation axis and connected to the end of the inner cable is fixed to the bracket, and the lower end of the gear shift lever is fixed to the bracket. A remote control mechanism for a gear transmission, characterized in that a part of the gear transmission is engaged with an axial pin provided on a rotating shaft.