JPS6142171Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a shift operating device for an automobile having a shift gear configuration of 5 forward speeds and 1 reverse gear. The present invention relates to an improvement in a shift operating device for an automobile that distinguishes an operation to a reverse gear select position from an operation to other select positions.

Conventionally, as a gear shift operation device for this type of automobile,
For example, a plate-shaped protrusion is integrally provided on the side of a control rod end that swings when a gear shift lever is selected, and coil springs are arranged above and below the protrusion to press the protrusion via a spindle. At the same time, locking grooves for locking the select position are provided in a continuous manner in multiple stages on the side of each of the spindles, and a spherical engaging portion is attached to each of the spindles so as to engage with each of the locking grooves. The gear lever is biased to return to the central select position by the tensile force of both coil springs, and is moved to each select position by changing the engagement force between each lock groove of each spindle and the engaging member. It is known that the operation load of the gear change lever is changed to distinguish the operation of the gear shift lever to the reverse gear select position from the operation of the gear shift lever to other select positions.

However, the above-mentioned conventional type requires two coil springs and has a complicated structure, so it has poor operational stability and reliability in terms of returnability to the central select position and distinguishability of the reverse gear select position. It had the disadvantages of lacking in quality, poor durability, and high cost.

In addition, as for the select return mechanism using a leaf spring as in the present application described later,
No. 23877, but this document does not disclose any function that changes the return characteristics of 5-R.

The present invention has been made in view of this point, and includes a notch formed at the bottom of the control rod end, and a plate-shaped return spring whose lower end is fixed to an appropriate fixed body of the transmission in the notch. While the upper end portions are engaged, a contact portion is provided on the side of the return spring that comes into contact with the upper and lower middle portions of the return spring when the return spring is bent due to the operation of the gear shift lever to the reverse gear select position. The return spring urges the shift lever to return to the central select position, and the spring force of the return spring increases due to the contact between the contact portion and the intermediate portion of the return spring, thereby moving the shift lever to the reverse gear select position. By making the operating load on the shift lever greater than the operating load on other select positions, it is easy to bias the shift lever back to the center select position and to easily distinguish between the reverse gear select position and other select positions. It is an object of the present invention to provide a speed change operating device for an automobile that can be operated with a simple structure, has excellent operational stability and durability, and is inexpensive.

Hereinafter, the present invention will be explained in detail based on an embodiment shown in the drawings.

1 to 3, reference numeral 1 denotes an extension housing constituting the rear part of a transmission with a five-speed forward gear and one reverse gear configuration, and 2 denotes a rear end portion of the upper surface of the extension housing 1. The control case is fixed to cover the opening 1a and has an open lower end, and a control rod 3 disposed in the front and back direction is slidable on the upper wall surface of the extension housing 1. The control rod 3 is rotatably supported, and the front end of the control rod 3 is connected to a fork shaft (not shown) of the transmission, and the rear end of the control rod 3 has a control rod 3 having a circular engagement hole 4a in the upper surface. The rod end 4 is fixed by a reamer bolt 5, and the engagement hole 4a of the control rod end 4 is fixed.
A spherical locking part 6a at the lower end of the gear shift lever 6 is slidably engaged with the gear shift lever 6, and a spherical expanded fulcrum part 6b of the gear shift lever 6 is rotatably held by the upper wall of the control case 2. The control rod end 3 is rotated along with the control rod end 4 by swinging in the left and right direction about the fulcrum portion 6b of the speed change lever 6 by the selection operation of the speed change lever 6.
is rotated to selectively operate the forkshaft, while the shift lever 6 is rocked back and forth by the shift operation of the shift lever 6, thereby shifting the control rod 3 together with the control rod end 4.
The forkshaft is operated by sliding the fork shaft back and forth. In addition, 7 is a main drive bushshaft arranged in the front-rear direction inside the extension housing 1, 8 is an output shaft for driving a speedometer arranged orthogonally to the main drive shaft 7, and 9 is a control case. 2, the fulcrum part 6 of the gear shift lever 6
This is a cover that covers b.

At the bottom of the control rod end 4, as shown in enlarged detail in FIG. 3, a cutout groove 10 is formed in the bottom by cutting out in the front and back direction from the front end to the rear end of the control rod end 4. ing. In addition, the above control rod end 4
Fixed plates 11 and 12 each having an L-shaped cross section are disposed on both left and right sides of the fixed plate 1.
The upper ends of 1 and 12 are clamped and fixed between the extension housing 1 and the control case 2, and the upper part of the control rod end 4 is tilted on the left side, that is, when the gear shift lever 6 is operated to select the reverse gear side. The lower end of the fixing plate 11 on the side where the bolt 1
4 and nuts 15,
The upper end of the return spring 13 is bent to have a substantially circular cross section and is engaged with the notched groove 10 of the control rod end 4, so that the shift lever 6 can be moved between the first and second forward gears. When the control rod end 4 is in the select position or the select position of the 5th forward gear, that is, when the control rod end 4 is tilted at a certain angle to the left or right side due to the select operation of the shift lever 6, the return spring 13 is Due to the return biasing force caused by the bending around the fastening and fixing point (lower end) of the fixing plate 11, an operating load as shown in line A in FIG. It is provided so as to be biased to return to the select position of the third and fourth forward gears.

On the other hand, the lower end of the fixed plate 12 on the right side, that is, on the side where the bottom of the control rod end 4 is inclined when the gear shift lever 6 is operated to select the reverse gear select position, is connected to the return spring 1.
A contact portion 16 is formed at the lower end portion of the return spring 13 to be in contact with the upper and lower intermediate portions of the return spring 13 when the return spring 13 is bent to the reverse gear selection position. Ori,
When the gear shift lever 6 is in the reverse gear select position, that is, when the bottom of the control rod end 4 moves to the right end, the contact between the upper and lower intermediate parts of the return spring 13 and the abutment part 16 causes The radius of curvature of the return spring 13 is reduced by approximately half compared to the fifth forward gear select position, and the return biasing force increases accordingly, reducing the operating load of the shift lever 6 to the reverse gear select position. As shown by the line, the operating load on the other forward gear select positions (1st and 2nd forward gear or 5th gear select position) other than the center select position is increased, and the shift lever 6 is provided so as to urge the switch back to the central select position. Furthermore, 1
Numeral 7 is a projecting piece provided at right angles to the left side of the control rod end 4, and 18 is provided on the upper part of the fixed plate 11, and is used to control the first and second gears of the gear change lever 6.
a left side stopper portion that restricts leftward movement beyond the select position of the forward gear by contacting with the protrusion 17;
Reference numeral 19 is provided at the lower part of the fixed plate 11, and restricts rightward movement of the gear shift lever 6 beyond the reverse gear selection position by contacting with the protrusion 17;
It is a regulating section that is provided to distinguish and regulate the 5th speed forward gear selection position and the reverse gear selection position of the gear change lever 6, and these regulating parts 20 and 21 are provided on both sides of the movement locus of the protrusion 17. A section 20 is disposed at the front, and a regulating section 21 is disposed at the rear.The regulating section 20 controls the protrusion 17 when the shift lever 6 selects the fifth forward gear, that is, the fifth gear of the control rod 3. In addition to restricting the movement of the control rod 3 in the direction opposite to the direction of shifting to the forward gear (forward), the restriction part 21 controls the movement of the control rod 3 in the direction opposite to the direction of shifting to the reverse gear when the gear change lever 6 is selected in the reverse gear. Movement in the direction (backward) is restricted.

Next, to describe the operation of the above embodiment, when the gear shift lever 6 is in the center select position of the third gear and the fourth forward gear, the return spring 13
is in an upright state without being bent, and the bending spring force of the return spring 13 is zero, so that the shift lever 6 is stably maintained at its select position.

When the shift lever 6 is operated from the center select position to the select position of the first and second forward gears or the fifth forward gear,
Accordingly, the control rod end 4 rotates and the return spring 1 engages with the notch groove 10 at the bottom of the control rod end 4.
3 is bent to the left or right using its lower end as a fixed fulcrum, and the return urging force due to the bending of the return spring 13 causes the control rod end 4 to
is rotationally biased in the return direction, and as a result, a return force in the direction of the center select position corresponding to the operating load as shown by line A in FIG. 4 is applied to the shift lever 6.

Furthermore, when the gear shift lever 6 is operated to the reverse gear select position located outside (on the right side) of the fifth gear forward gear select position, the control rod end 4 is operated to the fifth gear forward gear select position. The return spring 13 rotates to a larger angle than , and the upper and lower middle portions of the return spring 13 come into contact with the abutting portion 16, and the return spring 13 comes into contact with the abutting portion 16. Since it curves with the part (upper and lower middle part) that comes into contact with the part 16 as a fixed fulcrum, the return biasing force increases, and as a result, the shift lever 6 is set to the 5th forward gear select position as shown by line B in FIG. A return force in the direction of the center select position is applied, which corresponds to an operating load greater than the operating load at the fifth position.
The switching operation between the forward gear select position and the reverse gear select position is clearly distinguished, and at the same time, the shift lever 6 is biased back to the central select position.

In the above selection operation, in the above embodiment, the upper end of the plate-shaped return spring 13 is bent to have a substantially circular cross section, so that the control rod end 4 can be rotated smoothly, and the selection operation of the shift lever 6 can be performed smoothly. The feeling of operation can be improved.

On the other hand, when shifting the gear shift lever 6 to an appropriate shift position, the control rod end 4 moves forward and backward to the shift position while the return spring 13 is engaged with the notch groove 10 by the shift operation of the gear shift lever 6. By moving, the shift operation is performed smoothly.

In the above embodiment, a bent return spring 13 whose upper end is bent is used, but instead of this bent return spring 13, a flat return spring without a bent portion may be used. Of course, it is preferable to use the bent return spring 13 as in the above embodiment, since the shift lever 6 can be smoothly selected.

Furthermore, in the above embodiment, the present invention was applied to a longitudinally mounted transmission in which the transmission was arranged along the longitudinal direction of the automobile. Needless to say, the present invention can also be applied to a horizontally mounted transmission.

As described above, according to the present invention, a notch is formed at the bottom of the speed change operating member whose upper portion engages with the speed change lever and swings when the speed change lever is selected, and the lower end is formed in the notch. engages the upper end of a plate-shaped return spring fixed to an appropriate fixed body of the transmission, while the curvature of the return spring due to the operation of the gear change lever to the reverse gear select position is observed on the side of the return spring. With a simple configuration in which a contact part is provided which contacts approximately the upper and lower middle portions of the return spring, the return spring biases the shift lever back to the central selection position, and the contact part and the return spring By increasing the spring force of the return spring due to its contact with the upper and lower intermediate parts of It is possible to provide a gear shift operating device for an automobile that has excellent durability and can be manufactured at low cost.

[Brief explanation of the drawing]

The drawings illustrate an embodiment of the present invention, and FIG. 1 is a longitudinal sectional view, FIG. 2 is a sectional view taken along the line -- in FIG. 1, FIG. 3 is an enlarged sectional view of the main parts, and FIG. It is a graph showing the operation load with respect to the select position of the lever. 4... Control rod end, 6... Gear shift lever, 10... Notch groove, 11, 12... Fixed plate, 13... Return spring, 16...
...Abutment part.

Claims (1)

[Scope of utility model registration request] A plate having a notch formed in the bottom of a shift operation member whose upper part engages with a shift lever and swings when the shift lever is selected, and whose lower end is fixed to an appropriate fixed body of the transmission in the notch. While the upper end of the return spring is engaged with the upper end of the return spring, there is a contact on the side of the return spring that comes into contact with the upper and lower intermediate parts of the return spring when the return spring is bent due to the operation of the gear shift lever to the reverse gear select position. A contact portion is provided, and the return spring urges the gear shift lever to return to the central select position, and the spring force of the return spring increases due to the contact between the contact portion and the upper and lower middle portions of the return spring, which causes the shift lever to return to the central select position. A shift operating device for an automobile, characterized in that the operating load applied to a reverse gear select position is greater than the operating load applied to other select positions.