JPH0785973B2 - Electric contact type gear change unit - Google Patents

Description

Description: FIELD OF THE INVENTION The present invention relates to large vehicles, such as large buses, trucks,
It relates to an improved electrical contact gear change unit for use in an electro-hydraulic transmission for any mechanical transmission of a tractor.

BACKGROUND ART In recent years, in large buses, electric-pneumatic gear shifting has been adopted in order to reduce the operating force in the gear shifting operation of the mechanical transmission and to shorten the operating stroke in order to reduce the driver's mental and physical fatigue. Equipment (Actual development 58-6194
No. 6) has been proposed and used.

A fingertip operated gear change box, that is, an electric contact type gear change box is used in the transmission.

However, the electric contact type gear change box
It is located adjacent to the driver's seat on a stand that is fixed to the floor panel, which hinders the driver from getting in and out of the vehicle, which in turn saves space for the gear change box. It was

Further, if the driver gets off and leaves the large bus with the shift lever in the drive range while the engine is operating, the large bus may start running.

Problem to be Solved by the Invention The problem to be solved by the present invention is, without being restricted to the installation location,
In terms of operation, it is possible to install an electric contact type gear change box so that the fingertip operated gear change lever can be located at the most suitable place, and it is also possible to prevent the driver from getting in and out of the vehicle. In the unlikely event that the driver gets out of the vehicle with the engine running,
An electrical contact gear change unit for use in an electro-hydraulic transmission for a mechanical transmission that prevents the vehicle from rolling out.

SUMMARY OF THE INVENTION FOR PROBLEM TO BE SOLVED BY THE INVENTION The present invention relates to the above-mentioned problems, and an electric contact type gear change unit of the present invention includes a fixed column for mounting a root on an instrument panel cover or a floor panel, With respect to this fixed strut, a movable strut that is telescopically slidably fitted to the fixed strut from the tip of the fixed strut so that the movable strut can be moved to the retracted position and the pulled out position, and the movable strut at the withdrawn position. A clock mechanism fixed to the fixed strut, an electric contact type gear change box attached to the upper end of the movable strut, and a fixed strut or the movable strut, and depending on the retracting operation of the movable strut. The electric / fluid pressure type transmission is connected to the mechanical transmission by the operation signal at that time. When the driver shifts the mechanical transmission, the movable strut is pulled out and the lock mechanism is used to move the movable strut to the fixed strut when the driver shifts the mechanical transmission. When fixed and when the driver gets out of the vehicle, unlock the clock mechanism to retract the movable strut, actuate the exit signal switch with the retractable movable strut, and the exit signal switch. It is possible to automatically set the mechanical transmission to the neutral state according to the operation of the.

Description of Specific Examples Specific specific examples of the electric contact type gear change unit of the present invention will be described below with reference to the drawings.

1 to 4 show a preferred embodiment 10 of the electric contact type gear change unit of the present invention used in an electro-pneumatic transmission for a clutch of a large bus and a mechanical transmission (not shown). There is.

The electric contact type gear change unit 10 includes a fixed support 11 whose base is screwed to the instrument panel cover 40, and a fixed support 11 from the end of the fixed support 11.
A movable strut 12 that is telescopically slidably fitted to 11 and is moved to a retracted position and a retracted position with respect to the fixed strut 11, and the movable strut 12 is fixed to the fixed strut 11 at the retracted position. The lock mechanism 13 for fixing, the electric contact type gear change box 14 attached to the upper end of the movable column 12, and the fixed column 11 are arranged, and are closed according to the retracting operation of the movable column 12. ,
The operation signal at that time is configured to include an alighting signal switch 15 that causes the electro-pneumatic transmission to bring the mechanical transmission into a neutral state,
In particular, the fixed columns 11 and the movable columns 12 are the fingertip-operated gear change gears of the gear change box 14.
The telescope arm is configured so that the lever 33 is positioned most optimally for operating the driver's vehicle in relation to the driver's seat 42 and the steering wheel 43.

As will be understood from FIG. 4, the fixed support column is made of a channel-shaped steel piece having a cross section, and is manufactured to have a structure in which a flange 20 is integrally welded to the base. Therefore, the fixed column 11 is fixed by screwing the flange 20 to the instrument panel cover 40.

As can be seen from FIG. 4, the movable column 12 is made of a short steel tube having a rectangular cross section, and has an opening at the tip side.
Forming 21. Of course, the opening 21 is formed so that the handle 29 of the lock mechanism 13 incorporated in the short pipe can be operated, and is directed downward.

The lock mechanism 13 includes a lock lever 22, lock end receivers 25, 26 and 27 for receiving a lock end 23 of the lock lever 22, a lock spring 28, and a handle 29 and a connecting link 30. Has been done.

As can be seen from FIGS. 2 and 3, the locking lever 22 is incorporated into the movable column 12 and is rotatably supported by the movable column 12 with a pin 31 and has a lock end 23 at one end and the other end. The operation arms 24 are respectively provided at the ends.

The lock end receivers 25, 26, and 27 are 11 of the fixed column.
Is formed with three holes formed at predetermined intervals at the tip of the.

The lock spring 28 has one end fixed to the movable strut 12 and the other end connected to the operating arm 24 of the lock lever 22, and the lock end 23 is always fixed to the lock end receiver 25, 26, The operating arm 24 is provided with a force to rotate the lock lever about the pin 31 in the direction of engaging the 27.

The handle 29 faces the opening 21, and the movable column
Reciprocatingly arranged in 12 and its connecting link
At 30 it is connected to the operating arm 24 of its lock lever 22.

The electrical contact type gear change box 14 includes a box 32, a speed gate pattern (not shown) arranged in the box 32, and a fingertip operated gear moved in the speed gate pattern. A change lever 33, a plurality of contactless shift switches (not shown) that are opened and closed according to the movement of the gear change lever 33, and a plurality of contactless select switches (not shown) And electrically connecting the shift and select switches to a control unit (not shown) of an electro-pneumatic transmission (not shown).

The getting-off signal switch 15 is attached to the fixed strut 11 at the front end side of the fixed strut 11, and is opened and closed by retracting and withdrawing operations of the movable strut 12, as can be understood from FIGS. 1 and 2. I am trying to do it. Of course, this getting-off signal switch 15 is electrically connected to the control unit of the electro-pneumatic transmission, and is closed as the movable column 12 is retracted. The control unit of the pneumatic transmission, and the control unit is made to automatically control the mechanical transmission to the neutral state.

Next, a setting operation and a storing operation of the above-mentioned electric contact type gear change unit 10 will be described.

To set it, first touch the opening 21 of the movable column 12 and then change the electric contact type gear change.
As soon as you grasp the box 32 of the box 14, its movable column 12
At the pull-out position suitable for the driver, the lock end 23 of the lock lever 22 is engaged with the lock end receivers 25, 26, 27, and the movable support column 12 is attached to the fixed support column 11. Lock it. Therefore, the electric contact type gear change box 14 is set to a position where it is the easiest to operate for the driver, and at the same time, the exit signal switch 15 is opened, so that the operation signal of the exit signal switch 15 is set. The control unit normally disengages the clutch and also controls the electro-pneumatic transmission to select the required gear train in the mechanical transmission.

On the other hand, for the storing operation, first, the opening 21 of the movable column 12 is
, The handle 29 is pulled upward by hand, and the operating arm 24 of the lock lever 22 is pulled against the lock spring 28 via the connecting link 30 to
Rotate lever 22 around its pin 31 to lock it
Remove the end 23 from its lock end receiver 25,26,27,
Then by hand the electrical contact type gear change box 14
Box 32 is pushed, and the movable column 12 is pushed down to the retracted position shown by the chain double-dashed line in FIG. 1 while sliding the movable column 12 on the fixed column 11. Therefore, the driver can get on and off without being disturbed by the electric contact type gear change box 14.

Also, at the same time, since the exit signal switch 15 is closed by the retracted movable strut 12, the operation signal of the exit signal switch 15 causes the control unit to disengage the clutch, and Control the electro-pneumatic transmission to automatically bring the mechanical transmission into neutral.

The aforementioned fixed stanchion 11 was screwed to the instrument panel cover 40, but the floor panel 41
It is also possible to attach to.

As will be apparent from the specific embodiments of the present invention described above with reference to the drawings, those having ordinary skill in the art to which the present invention pertains,
The subject matter of this invention is readily embodied in other aspects which are derived from the nature and substance of the invention and which are objectively admitted to incorporate them. Of course, the contents of the present invention are commensurate with the subject of the invention and are essential to the establishment of the invention.

Benefits of the Invention As will be understood from the above, the electrical contact type gear change unit of the present invention has a fixed strut for attaching a root to an instrument panel cover or a floor panel, and a retracted position with respect to the fixed strut. And a movable strut that is telescopically slidably fitted to the fixed strut from the tip of the fixed strut so that the movable strut can be moved to the withdrawal position, and a lock that fixes the movable strut to the fixed strut in the withdrawn position. It is arranged on the mechanism, the electrical contact type gear change box attached to the upper end of the movable strut, and the fixed strut or the movable strut,
And it is closed according to the retracting operation of the movable column,
Since the electric-fluid pressure type transmission includes an alighting signal switch for making the mechanical transmission into a neutral state by an operation signal at that time, in the electric contact type gear change unit of the present invention, the fixed strut and the movable strut are In relation to the driver's seat and the steering wheel, it becomes possible to manufacture a telescope arm that positions its gear change box at a position suitable for the driver's operation, and it is released from the restriction of the installation location,
The gears are placed so that they can be located in the most suitable position for operation.
A change box can be installed, and when the driver gets on and off, the movable support column 12 is retracted, so that the driver can get on and off without being disturbed by the movable support column and the gear change box. In that way, the driver can get on and off smoothly, and further,
Even when the driver gets out of the vehicle while the engine is running, the movable strut is retracted, and the operation signal generated as the exit signal switch is closed causes the electro-hydraulic transmission. It is possible to put the mechanical transmission into a neutral state, and it is possible to reliably prevent the vehicle from starting, and as a result, it is very useful and practical for the electro-hydraulic transmission and the mechanical transmission. Target.

[Brief description of drawings]

FIG. 1 is a side view showing an installed state of an electric contact type gear change unit of the present invention used for an electro-pneumatic transmission of a clutch and a mechanical transmission mounted on a large bus. Is a partial side view showing a partial cross section of the electric contact type gear change unit shown in FIG. 1, and FIG. 3 is a partial cross sectional view of the electric contact type gear change unit shown in FIG. 4 is a sectional view taken along line 4-4 of FIG. 11 …… Fixed column, 12 …… Movable column, 13 …… Lock mechanism,
14 …… Electric contact type gear change box, 15 …… Get off signal switch.

Claims (1)

[Claims] Claim: What is claimed is: 1. A fixed column for mounting a root on an instrument panel cover or a floor panel, and a fixed column from the tip of the fixed column so that the fixed column is moved to a retracted position and a withdrawn position. A movable strut that is slidably fitted in a telescopic manner, a lock mechanism that fixes the movable strut to the fixed strut at the drawn-out position, and an electrical contact gear that is attached to the upper end of the movable strut.
The change box is arranged on the fixed column or the movable column, and is closed according to the retracting operation of the movable column. The operation signal at that time closes the mechanical box to the electro-hydraulic transmission.
Electrical contact type gear change including a disembarkation signal switch to put the transmission in neutral
unit.