JPS5936504Y2 - Sub-transmission mechanism operating device - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to an auxiliary transmission mechanism operating device.

For convenience, the structure of a conventionally known shift lever support device for operating a main transmission mechanism will be explained using FIGS. 1a and 1l).

In the figure, an engine 1 and a support frame 2 connected to the rear part of the engine 1 are supported on a vehicle body B via elastic support members 3, 3, and a main shift control rod 4 of a transmission mechanism is attached to the rear of the engine 1. The front end of the main transmission rod 5 which extends rearward is connected to the rear end of the main transmission rod 5 through a universal joint 6, and the tip of a link 7 which extends rearward approximately parallel to the main transmission rod 5 is connected to the support frame 2. is pivoted.

One front end of a support member 9 having an inverted U-shaped cross section is fixed to the rear end of the link 7, and the rear end of the support member 9 faces into a bracket 10 fixed to the vehicle body B and having an inverted U-shaped cross section. , support member 9
A pair of elastic bodies 11.11 connects both sides of the bracket I.10 to both sides of the bracket I.10.

A main shift lever 13 is connected to the support member 9 via a spherical bearing 12.
is supported, and the rear end of the main transmission rod 5 is rotatably connected to the lower end of the lever 13.

When the engine 1 vibrates in the vertical direction, the main gear shift rod 5 and the link 7 do not displace relative to each other, and work together to apply a torsional force to the pair of elastic bodies 11, 11, while the bracket 10
Since the main shift lever 13 swings up and down using the connecting portion between the engine 1 and the support member 9 as a fulcrum, the main shift lever 13 hardly swings back and forth relative to the engine 1, and vibrations transmitted to the support member 9 are prevented. is buffered and absorbed by the pair of elastic bodies 11 and 11, and is hardly transmitted to the vehicle body B.

Also, even if the engine 1 vibrates in the longitudinal direction with respect to the vehicle body B,
The main transmission rod 5 and the link 7 move back and forth while applying shearing force to the pair of elastic bodies 11 and 11 as one body without being relatively displaced, and the vibrations transmitted to the support member 9 are transmitted to the pair of elastic bodies 11 .11 and is hardly transmitted to the vehicle body B.

Furthermore, even if the engine 1 undergoes rotational vibration and undergoes compound displacement up and down and back and forth, the vibrations transmitted to the support member 9 are similarly transmitted to the elastic body 1.
1 and 11 and is hardly transmitted to the vehicle body B.

Also, the lateral vibration of the support member 9 is small, and
The left and right rocking of the main shift lever can be reduced.

When adding high-speed and low-speed auxiliary transmission mechanisms in addition to the conventional main transmission mechanism, either a separate device similar to the conventional device or a auxiliary transmission lever connected to a push-pull cable must be provided. This can prevent large vibrations of the sub-shift lever in the longitudinal direction of the vehicle body or transmission of large vibrations to the vehicle body.

The purpose of the present invention is to focus on the above points and provide an auxiliary transmission mechanism operating device that can be simplified and reduced in cost. The other end of the auxiliary transmission lever is connected via a universal joint to the auxiliary transmission control rod protruding from the rear of the engine, and the other end of the auxiliary transmission lever is connected via a spherical bearing or a pin to the link of the transmission lever support device for the main transmission mechanism. The lower end of the auxiliary shift lever is connected to the lower end of the supported auxiliary shift lever, or the lower end of the auxiliary shift lever is connected to the auxiliary shift lever supported by the link via the same cylindrical portion.

In this case, since the link is shared, the structure is simple, and furthermore, the means for supporting the sub-shift lever can be simplified.

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1a is a side view showing the structure of an embodiment of the present invention;
Figure 1 is a sectional view taken along line A-A in Figure 1aL7).

In the figure, numerals 1 to 13 are as described in the description of the conventional shift lever support device for a main transmission mechanism.

In the present invention, an auxiliary transmission mechanism operating device is installed in parallel with the above device.

The auxiliary shift lever 2 is connected to the auxiliary shift control lever 20 protruding from the engine 1.
The front ends of the two are connected via a universal joint 21, and the rear ends are rotatably connected to the lower end of the sub-shift lever 24.

Further, the sub-shift lever 24 is supported by the support member 9 via a spherical bearing 23.

The means for supporting the sub-shift lever 24 on the support member 9 may be pivoted by a pin 25, as shown in FIG. If the operation direction of the sub-shift lever 24 is limited to the left and right directions of the vehicle body, it may be pivoted by a pin 26 as shown in FIG. The sub-shift lever 22 may be fitted into the cylindrical portion 27 having the same diameter, and the lower end of the sub-shift lever 24 may be fixed to the sub-shift lever 22.

In the case of the above configuration, since the link is shared with the shift lever support device for the main transmission mechanism described above, similarly to the same device,
Large swings of the sub-shift lever in the longitudinal direction of the vehicle body or large swings transmitted to the vehicle body can be prevented.

Furthermore, by determining the operating direction of the sub-shift lever using a simple mechanism such as a pin or a cylindrical portion, an inexpensive and simple structure can be realized.

[Brief explanation of the drawing]

FIG. 1a is a side view showing an embodiment of the device according to the present invention;
Figure 1 is a sectional view taken along the line A-A (Figure 1acr), Figures 2 and 3 are explanatory diagrams showing other aspects of the support structure for the sub-shift lever, and Figure 4 is a cross-sectional view of the sub-shift lever. It is an explanatory view showing a supporting structure. 1...Engine, 2...Support frame, 3.
...Elastic support member, 4...Main shift control rod, 5...Main shift lever, 7...Link, 9
......Supporting member, 10...Bracket,
13... Main gear shift lever, 20... Sub gear shift control rod, 21... Universal joint, 22...
・Sub-shift lever, 23... Spherical bearing, 24...
...Sub-shift lever, 25.26...Pin, 27
・・・・・・Same cylinder part, B・・・・・・Vehicle body.

Claims (1)

[Scope of utility model registration request] The main speed change lever, which is connected to the main speed change control rod protruding from the rear of the engine via a universal joint, and the link pivotally connected to the rear of the engine are extended rearward almost in parallel, and the rear end of the link is connected via an elastic body. The lower end of the main gear shift lever is supported on the vehicle body by the link via a spherical bearing, and the lower end of the main gear shift lever is connected to the rear end of the main gear shift lever. The other end of the sub-shift lever, which has one end connected to the provided sub-shift control lever via a universal joint, is connected to the lower end of the sub-shift lever supported by the first link via a spherical bearing or pin, or An auxiliary transmission mechanism operating device characterized in that a lower end of the auxiliary transmission lever is connected to the auxiliary transmission lever supported by a link via the same cylindrical portion.