JPH0213806Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to the structure of a transmission control for a transverse rear engine.

In large rear-wheel drive vehicles such as buses, the power transmission device is generally mounted at the rear. In this rear-mounted system, the gear shift lever and power transmission device are separated, so the transmission connected to the engine is placed vertically so that it extends in the longitudinal direction of the vehicle.
The gear shift lever and transmission are connected by a single control rod.

By the way, as a mounting method for power transmission devices in recent rear-engine/rear-wheel drive vehicles, in order to shorten the length of the rear overhang of the vehicle body, the transmission connected to the engine is placed horizontally so that it extends in the width direction of the vehicle. It has been proposed to install the

On the other hand, when the engine is placed horizontally, the control system connected to the gear shift lever and the transmission are connected using a method called the cross-shaft system, in which two rods, one for select and one for shift, are connected to the transmission. is commonly used. Therefore, in order to adopt a transversely mounted rear engine, it is necessary to connect the gear shift lever and the rear engine transmission with two types, one for select and one for shift.
It was necessary to connect them by means of book rods.

In other words, in order to horizontally mount the rear engine, you need to create a new dedicated transmission, or
Alternatively, it is necessary to use a transverse front engine transmission and connect the gear lever located far away from the rear engine transmission with two rods, one for selection and one for shift.

However, it is not advantageous in terms of cost to manufacture a new transmission, and in order to connect two separate parts with two rods, the rods must be sufficiently rigid, which increases the cost and the need to support the rods. This cannot be said to be a preferable method from a method point of view.

The present invention was developed in view of the above-mentioned circumstances, and combines the conventional control rod of a vertical rear engine with the transmission of a horizontal front engine by two rods near the engine. We provide a transmission control structure for a transversely mounted rear engine that eliminates vibrations from the transmission.
The purpose is to enable transmission control of a horizontal rear engine using existing parts.

The structure of the present invention to achieve such an object is that in an engine mounting structure in which the engine and transmission are mounted horizontally on the vehicle body, one end is connected to the gear shift lever and the other end is connected to the gear shift lever through the first ball joint. A control rod is connected to the select rod and extends in the longitudinal direction of the vehicle, and a control rod is attached to the select rod via a second ball joint and is connected to the transmission in response to rotation of the control rod about its axis. a select lever for performing a selection operation, a pin provided at the other end of the control rod, and a cross plate having an elongated hole that allows the pin to move only about the axis of the control rod. , one end is connected to the cross plate via a third ball joint, and the other end is connected via a fourth ball joint to shift the transmission in response to the axial movement of the control rod. and a shift rod connected to a cross shaft that performs a selection operation, and when the gear shift lever is selected, the control rod is rotated around its axis, and only the select lever is actuated to perform a selection operation, and the gear shift lever is shifted. The present invention is characterized in that the control rod is moved along the axial direction by operation, and only the shift rod is actuated to perform a shift operation.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The transmission control structure for a horizontal rear engine according to the present invention will be explained in detail below with reference to the drawings.

Fig. 1 shows a schematic plan view of a mounting structure for a transversely mounted rear engine, Fig. 2 shows a schematic perspective view showing a transmission control structure for a transversely mounted rear engine according to the present invention, and Fig. 3 shows a control rod and a transversely mounted rear engine. The details of the joining part of the transmission are shown, with a showing the partial plane and b showing the partial side.

An output shaft 3 of a transverse front engine transmission 2 connected to the engine 1 is pulled out in the vehicle width direction. This output shaft 3 constitutes the input side of the upper part of a transfer mechanism 4 that is integrally formed with the transmission 2.
A transmission shaft 5 forming the output side of the engine 1 is horizontally suspended at a lower rear position of the engine 1 along the axis of the engine 1.

On the other hand, a transmission gear mechanism 6 is attached below the rear of the engine 1 near the center line of the vehicle body.
The gear shaft of this transmission gear mechanism 6 is formed by an input gear and an output gear (not shown) that are orthogonal to each other. The output side of the transfer mechanism 4 and the input gear shaft of the gear mechanism 6 are rotationally connected by the transmission shaft. The output gear shaft of the gear mechanism 6 is rotatably connected to the differential 7 by a propeller shaft 8 mounted between the output gear shaft and the input shaft of the differential 7 facing substantially in front of the gear shaft.

A select plate 11 is disposed at the end on the engine 1 side of the vertical rear engine control rod 10 which receives the movement of the gear shift lever 9 through longitudinal movement and rotation and transmits the movement to the transmission. is installed. Select board 1
A select rod 12 is swingably attached to the select rod 1 via a ball joint 12a serving as a first ball joint.
The other end of 2 is attached to the tip of the select lever 20 of the transmission 2 via a ball joint 12b serving as a second ball joint. The select lever 20 selects the transmission 2 in response to rotation of the control rod 10 about its axis. A pin 10a is located at the upper part of the control rod 10, slightly forward of the position where the select plate 11 is attached.
is provided, and a cross plate 13 is provided on the pin 10a.
The elongated hole portion 13a is inserted. Long hole part 13a
allows the pin 10a to move only about the axis of the control rod 10. cross board 1
3 is the pin 10a for the control rod 10
It is possible to rotate around the center and move by the length of the elongated hole 13a. Long hole 1 of cross plate 13
A center pin 14 is provided at the end where 3a is not provided.
A shift plate 15 is rotatably attached to one end of the shift plate 15, and a shift rod 16 is swingably attached to one end of the shift plate 15 via a ball joint 16a serving as a third ball joint. On the other hand, a cross shaft 17 is rotatably attached to the shift lever (not shown) of the transmission 2 in parallel with the control rod 10, and when the cross shaft 17 rotates, the shift lever of the transmission 2 is rotated. is starting to move. A cross shaft plate 18 is attached to the cross shaft 17, and a shift rod 16 is swingably attached to the cross shaft plate 18 via a ball joint 16b serving as a fourth ball joint. The cross shaft 17 rotates in response to the movement of the control rod 10 in the axial direction, and the transmission 2
Perform the shift operation.

That is, the rotation of the control rod 10 causes the select plate 11 and select rod 12 to move in the vehicle width direction, thereby moving the select lever 20 of the transmission 2. Also, as the control rod 10 moves in the longitudinal direction of the vehicle, the cross plate 13 moves into the elongated hole 1.
3a, the shift plate 15 swings via the center pin 14, the shift rod 16 moves in the vehicle width direction, and the cross shaft 17 rotates via the cross shaft plate 18 to move the shift lever. It moves it.

In the above configuration, the control action from the gear shift lever to the transmission is performed as follows.

First, when the gear shift lever 9 is moved from side to side, the control rod 10 is rotated via a mechanism not shown, and the selection plate 11 is swung. As the select plate 11 swings, the ball joint 1
The select lever 20 of the transmission 2, which is attached via the ball joint 12b, is moved from side to side while swinging relative to the select plate 11 via the select rod 12 via the select lever 2a.
However, they move while rocking relative to each other.

Next, when the gear shift lever 9 is moved back and forth, the control rod 10 is moved back and forth.
The cross plate 13 is moved by the pin 12a in the direction of movement of the control rod 10, and
It also moves in the vehicle width direction along the elongated hole 13a. As the cross plate 13 moves, the shift plate 15 swings around the center pin 14, and the shift rod 16 moves left and right while swinging relative to the shift plate 15 via the ball joint 16a. do. The other end of the shift rod 16 is a ball joint 16b.
Since it is attached to the cross shaft plate 18 which is fixed to the cross shaft 17 via
As the shift rod 16 moves from side to side, the cross shaft plate 18 swings relatively, and the cross shaft 17 to which the cross shaft plate 18 is attached rotates. As the cross shaft 17 rotates, a shift lever (not shown) of the transmission 2 moves.

As explained in detail based on one embodiment above,
According to the transmission control structure for a horizontal rear engine according to the present invention, the control rod of a conventional vertical rear engine and the transmission of a horizontal front engine are connected by two rods near the engine. Since it uses a cross-shaft system that uses rods to connect, it is possible to escape transmission vibrations, and by using existing parts, it is possible to easily use a horizontally mounted rear engine.

[Brief explanation of the drawing]

Fig. 1 is a schematic plan view of a mounting structure for a transverse engine, Fig. 2 is a schematic perspective view showing a transmission control structure for a transverse rear engine according to the present invention, and Fig. 3 is a control rod and transmission. Fig. 2 shows a joint portion of the Fig. 1, in which a is a partial plan view thereof and b is a partial side view thereof. In the drawing, 1 is the engine, 2 is the transmission, 9 is the gear shift lever, 10 is the control rod, 11 is the select plate, 12 is the select rod, 13 is the cross plate, 13a is the elongated hole, 14 is the center pin, and 15 is Shift plate, 16 is shift rod, 1
2a, 12b, 16a, 16b are ball joints, 17 is a cross shaft, and 18 is a cross shaft plate.

Claims (1)

[Scope of utility model registration request] In an engine mounting structure in which the engine and transmission are mounted horizontally to the vehicle body,
A control rod that extends in the longitudinal direction of the vehicle and has one end connected to the gear shift lever and the other end connected to the select rod via a first ball joint, and is attached to the select rod via a second ball joint. a select lever that selects the transmission in response to rotation of the control rod about its axis; a pin provided at the other end of the control rod; A cross plate having an elongated hole that allows movement of the above-mentioned pin only for movement, and one end connected to the cross plate through a third ball joint, and the other end connected to the above-mentioned cross plate through a fourth ball joint. and a shift rod connected to a cross shaft that shifts the transmission in response to the movement of the control rod in the axial direction, and the control rod is rotated around the axis by selection operation of the gear shift lever. The control rod is moved along the axial direction by a shift operation of the gear shift lever, and only the shift rod is operated to perform a shift operation. Transmission control structure for a horizontal rear engine.