JPH0452528Y2 - - Google Patents

Description

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

[Prior Art] In the transmission operating mechanism disclosed in Japanese Patent Application Laid-Open No. 58-192118, a guide tube fixed to the end of an outer tube is rotatably supported on a base frame, and a yoke fixed to the guide tube is rotatably supported. A gear shift lever supported by an arm that can be tilted left and right with respect to the base frame is engaged in the groove, and an end of a cable inserted through the outer tube is connected to the gear shift lever.

The above-mentioned remote control cable is simply a cable inserted into the outer tube, so when installing the remote control cable, it is necessary to support the remote control cable in a rotatable manner on the vehicle body wall, which prevents the remote control cable from becoming loose. The rocking displacement of the bent portion increases due to the rotation of the outer tube, and there is a risk that the outer tube may come into contact with a vehicle body wall or the like and be damaged. Since the speed change lever is inserted into and engaged with the groove of the yoke, the gap in the engagement portion slows down the rotation of the outer tube by the speed change lever, reducing transmission efficiency. The arm is unstable because it is supported at only one end, and installation errors in the concentricity of the guide tube and the shaft of the gear shift lever have the disadvantage of affecting the smoothness of the operation of the remote control cable.

[Problems to be solved by the invention] In view of the above-mentioned problems, the purpose of the invention is to insert and support an inner tube into an immovable outer tube, and connect the inner tube to a shaft support portion of a tilting body that can be tilted from side to side by a speed change lever. An object of the present invention is to provide a remote control mechanism for a gear transmission that allows smooth left and right tilting of a gear shift lever and smooth rotation of an inner tube.

[Means for solving the problem] In order to achieve the above object, the configuration of the present invention is such that the front and rear ends of a tilting body curved in a U-shape are axially supported on the front and rear end walls of the base frame so as to be tiltable from side to side. The lever is axially supported on a tilting body so that it can be tilted back and forth, the end of the inner tube is connected to one shaft support part of the tilting body, and the end of the cable inserted through the inner tube and the shaft support part is tilted at the middle part of the gear shift lever. The ends of the outer tube, which is connected to the parts lined up with the shaft support parts at both ends of the body and through which the inner tube is inserted, are fixed to the end walls of the base frame.

[Operation] When the gear shift lever is tilted left and right (select operation), the tilting body that supports the gear shift lever pivots left and right around the shaft support (base), and the inner tube connected to the shaft support (base) rotates. are rotated together with the cable in the same direction and at the same angle using the outer tube as a guide. When the shift lever is tilted back and forth (shift operation), the shift lever rotates back and forth with respect to the tilting body, and the cable is pushed and pulled in the front and back direction.

[Embodiment of the invention] FIG. 1 is a side sectional view of a remote control mechanism for a gear transmission according to a first embodiment of the invention. In the figure, 1 is a base frame that is fixed to the vehicle body, specifically the floor panel of the driver's cab, and outer tubes 5 that protect the inner tube 25 are installed in holes in the front and rear end walls 2 of the base frame 1.
A fixed cap 6 is inserted into the end of the holder. The cap 6 is fixed to the end wall 2 by a pair of presser plates 7 screwed onto the cap 6 and a nut 7a. An inner tube 25 passing through the outer tube 5 and the cap 6 has its end fixed to the cap 8.

The cap 8 is rotatably supported by a support wall 4 fixed to the base frame 1 via a bush. One end of a tilting body 9 consisting of a U-shaped rod is connected to the base 8 with a nut 10. The cable 12 inserted through the inner tube 25 has its end connected to a rod 14, which is inserted into a sleeve 13 having a spherical base 13a, and its end connected to a base 19. 11 and 15 are boots.

The spherical base 13a of the sleeve 13 is fitted into a large-diameter cylindrical portion provided at the end of the cap 8, and is supported by caulking the mouth edge of the large-diameter cylindrical portion radially inward to prevent it from coming off. The sleeve 13 has spherical bases 1 on the top and bottom and on the left and right sides.
Cable 12 can be bent around center 3a.
Protect the connection between the rod 14 and the rod 14. cable 1
2 is actually equipped with a liner to ensure smooth sliding with the inner tube 25, and the core wire is inserted into the cylindrical part at the end of the rod 14, brazed if necessary, and caulked from the outer periphery. be combined.

The gear shift lever 16 is supported at its lower end by a shaft 18 at the middle part of the tilting body 9 so as to be tiltable back and forth, and its middle part is connected to a base 19 by a pin 17. The other end of the tilting body 9 is attached to the other end wall 3 of the base frame 1 with a shaft 20.
The shaft 20 is fixed to the end wall 3 by a nut 21.

Next, the operation of the remote control mechanism for a gear transmission according to the present invention will be explained. First, shift lever 16
When the shift lever 16 is tilted left and right (select operation), the tilting body 9 connected to the shift lever 16 by a shaft 18 is tilted left and right about the base 8 and the shaft 20. Since the cap 8, the shaft 20, the cable 12, and the cap 19 are arranged on the same axis, the tilting body 9, the cap 8, the inner tube 25, the cap 19, and the cable 12 are rotated together. That is, the inner tube 25 is rotated together with the cable 12, and a selection operation of a control rod of a gear transmission (not shown) is achieved.

When the shift lever 16 is tilted back and forth (shift operation) about the axis 18 of the tilting body 9, the pin 17 in the middle of the shift lever 16 pushes and pulls the base 19, rod 13, and cable 12 back and forth, as shown in FIG. Shifting of the gear transmission control rod, not shown, is accomplished.

A second embodiment shown in FIG. 2 will be described. Components common to those in the first embodiment shown in FIG. 1 are given the same reference numerals and names to avoid duplication of explanation. A cap 6 fixed to the end of the outer tube 5 is inserted into a hole in an end wall 32 of a base frame 31 fixed to the floor panel of the driver's cab, and a pair of presser plates 7 and nuts 7a are inserted.
is fixed to the end wall 32 by. inner tube 2
The base 8 fixed to the base 5 is rotatably supported by the support wall 34. The gear shift lever 36 is rotatably supported by a shaft 38 on the upper part of a tilting body 39 whose middle part will be described later, and its lower end is connected to the base 19 by a pin 37.The base 19 is connected to the cable 12 via the rod 14.
is connected with.

A tilting body 39 made of a plate having a U-shaped planar cross section corresponds to the tilting body 9 in the first embodiment, and has one end fitted onto the base 8 and fastened with a nut 40 . The other end of the tilting body 39 is the base frame 31
The shaft 20 is tiltably supported by the other end wall 33 of the shaft 20 .

In the embodiment shown in FIG. 2, when the shift lever 36 is tilted left and right (select operation), the tilting body 39 is tilted left and right about the base 8 and the shaft 20.
Since the cap 8, the shaft 20, the cable 12, and the cap 19 are arranged on the same axis, the tilting body 39 and the cap 8
The inner tube 25, the base 19, the rod 14, and the cable 12 are rotated integrally.

When the gear shift lever 36 is tilted (shifted) back and forth around the shaft 38 of the tilting body 39, the pin 37
The base 19, rod 14, and cable 12 are pushed and pulled back and forth.

In the embodiment shown in FIG. 3, one end of a tilting body 69, which corresponds to the tilting body 39 in FIG. To support. The lower end of the gear shift lever 16 is supported by the shaft 18 on the lower part of the tilting body 69,
Connect the middle part of the gear shift lever 16 to the base 1 with the pin 17.
Connect to 9. The operation of the remote control mechanism according to this embodiment is similar to that shown in FIG.

[Effects of the invention] As described above, in the present invention, the U-shaped tilting body is axially supported by the end wall of the base frame so as to be tiltable left and right, and the gear shift lever is axially supported by the tilting body so that it can be tilted back and forth. A sense of unity between the gear shift lever and the tilting body is obtained, there is no wasted movement, and the transmission efficiency is excellent.

Since both ends of the tilting body are coaxially supported on the base frame, installation errors are small and the support rigidity of the tilting body is high.
The movement of the tilting body is very smooth.

Since the left and right tilting centers of the gear shift lever and the tilting body are always aligned, the inner tube can be rotated effortlessly regardless of the position of the gear shift lever.
The cable can be pushed and pulled smoothly by tilting the gear shift lever back and forth.

Since the inner tube is rotated together with the cable, the operating force is transmitted more smoothly than in the conventional case where only the outer tube (corresponding to the inner tube of the present invention) is rotated, making the gear transmission easier to operate. will improve.

A single remote control cable consisting of an outer tube, an inner tube, and a cable can be used to interlock and connect the gear shift operation mechanism in the driver's cab with the control rod of the gear transmission, making cabling easier and stabilizing the posture of the remote control cable. This helps reduce weight and cost compared to conventional link mechanisms.

[Brief explanation of the drawing]

FIG. 1 is a side sectional view showing a remote control mechanism for a gear transmission according to a first embodiment of the present invention, and FIGS. 2 and 3 are remote control mechanisms for a gear transmission according to second and third embodiments of the present invention. FIG. 1, 31... Base frame, 5... Outer tube,
8, 19...cap, 9,39,69...tilting body,
12...cable, 13...sleeve, 14...
Rod, 16, 36...shift lever, 25...inner tube.

Claims (1)

[Scope of utility model registration request] The front and rear ends of a tilting body curved in a U-shape are axially supported on the front and rear end walls of the base frame so as to be tiltable from side to side. Connect the ends of the inner tube, connect the end of the cable inserted through the inner tube and the shaft support to the part of the tilting body that is lined up with the shaft support at both ends at the middle part of the shift lever, and connect the end of the outer tube that passes through the inner tube. A remote control mechanism for a gear transmission, characterized by being fixed to the end wall of a base frame.