JPS6213861Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the structure of an operating lever device for an automobile transmission, particularly to structural improvements of a change support portion that supports a change lever.

Conventionally, in the operation lever device of an automobile transmission, a small ball part provided at the tip of the change lever is fitted and supported in a fitting part provided on a support rod whose one end is fixed to the vehicle body side, and a pipe member is attached to the support rod. The pipe member is fitted in a slidable manner, and a support member that supports a large ball provided at the middle portion of the change lever is integrally fixed to the pipe member, and the change lever is operated to change gears through the support member and the pipe member. The structure of the change support section in which the transmission is transmitted to the control rod for use is well known (see, for example, Japanese Utility Model Application Publication No. 13118/1983).

By the way, in the above change support part structure, where the tip of the solid control rod is fitted and fixed to one end of the pipe member, there is no seal between the opposite end surfaces of the control rod and the support rod from the outside inside the pipe member. A space is created. The volume of this sealed space fluctuates as a result of the control rod being displaced in the axial direction relative to the support rod together with the pipe member when the change lever is selected. Therefore, when this volumetric variation is large, in other words, when the amount of displacement of the control rod cannot be ignored relative to the distance between the two rods, this closed space functions as a type of air action, and the change is not possible. This causes a problem that significantly impedes the select operability of the lever.

The present invention has been made to solve this problem, and includes a support member for the large ball of the change lever, which is fixed to the pipe member to form a sealed space between the support rod and the control rod in the pipe member. The purpose of the present invention is to provide an air vent structure for a change support part that communicates with the internal space of the change support part and allows air to escape into this internal space.

Hereinafter, the present invention will be explained in more detail based on the illustrated embodiments.

In FIG. 1, 1 is a change lever for operating an automobile transmission (not shown), and 2 is a mounting bracket 3 for a small diameter shaft portion 2a provided at one shaft end.
The other end 2b of the support rod 2 is a cantilevered support rod fixed to the vehicle body (not shown) through the
A fitting hole 4 is provided in the side to penetrate in the radial direction, and a small ball portion 1a provided at the tip of the change lever 1 is fitted and held, and the change lever 1 is selectively operated in the left and right direction in the figure, or as shown in the figure. It is possible to perform shift operations in the direction perpendicular to .

Reference numeral 5 denotes a pipe member called a change pipe, which is fixed with the tip 6a of a solid control rod 6 fitted to one end 5a side, and is fixed in the axial direction by a support rod 2 fitted from the other end 5b side. It is slidably guided. Approximately at the center of the body of the pipe member 5, there is an elongated hole that is elongated in the axial direction in consideration of the amount of displacement of the pipe member 5 with respect to the mortar-shaped opening 4a of the fitting hole 4. 7 is provided, and furthermore, a support member 8 expanding in a conical shape is provided.
The base portion 8a of the base portion 8a is integrally fixed by welding or the like so as to cover the elongated hole 7 from the outside.

The support member 8 loosely fits the large ball part 1b provided at the middle part of the change lever 1 into the upper cylindrical part 8b, supports it by a support shaft 1c, and controls the selection and shift operations of the change lever 1 using a pipe member. 5, the pipe member 5 causes the control rod 6 fixed to one end to slide in the axial direction or rotate around the axis.

The support rod 2, pipe member 5, and support member 8 constitute a support portion of the change lever 1, so-called a change support portion.

The control rod 6 selectively operates the transmission-side select operation lever 12 in the axial direction via an interlocking member 11 that is non-rotatably fixed to the end opposite to the pipe member 5 with a bolt 10. ,
Further, when the control rod 6 is rotated, a shift operation lever 13 on the transmission side fixed to the shaft end is rotated to shift the transmission.

The control rod 6 is always biased rightward in the figure by a coil spring 16 compressed between a spring seat 15 supported by a support bracket 14 at the middle of the shaft and the interlocking member 11. has been done.

In the structure of the chain support part, the first
As shown in the figure, in the present invention, from at least the other end 2b side of the support rod 2, that is, the end surface 2c facing the control rod 5, to the outer peripheral portion between the preferably conical opening 4a of the fitting hole 4,
An axial notch groove 17 (see FIG. 2) is provided, and a closed space 18 defined between the support rod 2 and the control rod 6 in the pipe member 5 is formed through the notch groove 17 to form a large part of the support member 8. He is trying to communicate with the internal space 19.

If the notch groove 17 is provided as described above and the space 18 is communicated with the internal space 19 of the support member 8, the space 1
Since the air in the support member 8 is not trapped, pressure fluctuations caused by volume fluctuations when the control rod 6 is slid in the axial direction are absorbed by the large volume of the internal space 19 of the support member 8. , therefore it does not function as an air action.

In addition, since the above-mentioned change support part is supported outside the vehicle body, it should not be used in places where rainwater or the like may enter, namely, the mounting side end (2a side) of the support rod 2 and the upper cylindrical part of the support member 8. 8b is preferably covered with diaphragm-structured covers 20 and 21 from the outside to seal it from the outside.

In this case, one end is fixed to the pipe member 5, and the other end is connected to the small diameter shaft portion 2b of the support rod 2 and the cylindrical member 2.
The cover 20 held between the pipe member 5
, the other notched groove 24 that communicates the internal space 23 of the cover 20 and the internal space 19 of the support member 8 is inserted in the axial direction of the support rod 2 from the fitting hole 4 with a small diameter. Shaft 2
It is preferable to provide it over the a side.

As is clear from the above description, the present invention provides a change support section of an operating lever device for an automobile transmission, in which a sealed space formed between a control rod and a support rod in a pipe member is connected to a notch groove provided in the support rod. Therefore, the present invention provides an air venting structure for a change support part that communicates with the internal space of a support member that supports an intermediate large bulb part of a change lever that is integrally fixed to a pipe member.

Therefore, according to the present invention, when the change lever is operated to select, the air between the support rod and the control rod flows into and out of the internal space of the support member, so that the operability of the change lever is not inhibited.

[Brief explanation of the drawing]

FIG. 1 is a vertical sectional view of a change support portion of an operating lever device for an automobile transmission according to an embodiment of the present invention, and FIG. 2 is a sectional view taken along the - line in FIG. 1. 1...Change lever (1a...small ball part, 1b
... large ball part), 2 ... support rod, 4 ... fitting hole, 5 ... pipe member, 6 ... control rod, 7 ... long groove, 8 ... support member, 17 ... notch groove.

Claims (1)

[Scope of utility model registration request] A control lever device for an automobile transmission includes a pipe member in which a solid control rod for gear shift operation is fitted and fixed at one end, and a long groove is provided in the body to allow relative displacement with the change lever, and a change lever. A support member that supports the large ball part provided in the middle part of the lever and is integrally fixed to the pipe member across the long groove of the pipe member, and one end is fixed to the vehicle body side and the other end extends to a position past the long groove. A support rod that is fitted into the pipe member to slidably support the pipe member, and has a fitting part that fits and holds a small ball part provided at the tip of the change lever at the sliding part with the long groove of the pipe member. A notch groove is provided on the circumferential surface of the control rod from at least the fitting part to the other end, and the space between the control rod and the support rod is formed through the notch groove of the support member. The air release structure of the change support part is characterized by communicating with the internal space.