JP2003312299A - Speed changer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve the operability of a change lever of a speed changer. <P>SOLUTION: A shift cable 3 interlocking with the change lever 1 of the speed changer is linked to a middle part of a lever 20 borne to turn freely on a horizontal shaft 10. The front extremity of the lever 20 is fitted with a counter weight 21, and the end of a lever 22 born on the horizontal shaft 10 and extending in opposite to the extension of the lever 20 is linked to a power shift device 15. When the change lever 1 is shifted into a neutral position, the lever 20 is extended vertically. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for operating a transmission of a vehicle or the like with a change lever.

[0002]

2. Description of the Related Art In a conventional gear shift operating device for a vehicle, as illustrated in FIG. 3 in a select neutral state and a shift neutral state, the select cable 2 and the shift cable 3 are moved in the longitudinal direction by operating a change lever 1. Lever 4 displaced and connected to the tip of select cable 2
Is rotatably supported by the vertical axis 5, and the other end of the lever 6 whose one end is supported by the vertical axis 5 and the lever 8 projecting from the case 7 are connected by a select rod 9. When the directional displacement rotates the lever 8, the select operation force is transmitted to the gear shift operation mechanism (not shown) in the case 7, and the gear select operation (not shown) is performed.

On the other hand, the tip of the shift cable 3 is connected to the end of a lever 11 which extends upward from the horizontal shaft 10 and is rotatably supported by the horizontal shaft 10, and extends downward from the horizontal shaft 10 to extend to the lever 11. The counter weight 13 is attached to the end of the lever 12 that rotates integrally with the shift lever 14, one end of the shift rod 14 is connected, and the other end of the shift rod 14 is connected to the power shift device 15. As the displacement of the shift cable 3 in the longitudinal direction displaces the shift rod 14 in its axial direction, the shift operation force is increased by the power shift device 15 and is transmitted to the gear shift operation mechanism in the case 7 to shift the transmission. The operation is designed to be performed.

In this case, since the counterweight 13 is attached to the end portion of the lever 12, the internal vibration of the counterweight 13 is transmitted to the change lever 1 via the shift cable 3 due to the vibration inside the transmission and the change in the shift operation force. Although it can be reduced by force, on the other hand, since the counterweight 13 is attached to the end portion of the lever 12 extending downward from the horizontal shaft 10, when the gear shift is performed by the operation of the change lever 1, the counterweight 13 is rotated with the rotation of the lever 12. Since the counterweight 13 is lifted from the lowest position, the weight of the counterweight 13 may cause gear disengagement. When the change lever 1 is operated to return from the gear shift state to the shift neutral position, the counterweight 13 is released. Due to the inertial force of There is a problem that fear is there.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to improve the operability of the change lever while reducing the transmission of internal vibration of the transmission and fluctuation of the shift operating force to the change lever by the inertial force of the counterweight. To do.

[0006]

Therefore, the gear shift operating device according to the present invention has the first member for transmitting the operating force of the change lever and the first member supported about a substantially horizontal shaft.
A lever that is connected to the member and that rotates according to the operating force;
A second member for driving a transmission mechanism of a transmission in conjunction with the rotation of the lever; and a lever in which a center of gravity is arranged substantially vertically above the shaft at a distance from the shaft at a shift neutral position of the change lever. And a counterweight that rotates about the shaft as the center rotates.

That is, since the lever is connected to the first member for transmitting the operation force of the change lever, and the counterweight is rotated in accordance with the rotation of the lever, it is possible to prevent the vibration in the transmission from occurring. Shifting operation force fluctuation is second
The transmission to the change lever via the member, the lever and the first member can be easily reduced by the inertial force of the counterweight, while the counterweight that rotates together with the lever about the rotation axis of the lever is used for the change lever. At the shift neutral position, the center of gravity is arranged substantially vertically above the rotation shaft and spaced from the rotation shaft, so that the weight of the counterweight causes the operation of the change lever during shift operation of the change lever. The operability of the change lever can be surely improved by acting in the urging direction.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below by assigning the same reference numerals to parts equivalent to those of the conventional device.

Referring to FIGS. 1 and 2, in the shift operating device for a vehicle, the select cable 2 and the shift cable 3 are displaced in the longitudinal direction by the operation of the change lever 1,
A lever 4 connected to the tip of the select cable 2 is rotatably supported by a vertical axis 5, and the tip of a lever 6 rotatably supported by the vertical axis 5 and a lever 8 protruding from the case 7 are select rods. 9, the longitudinal displacement of the select cable 2 causes the lever 8 to rotate, whereby the select operation force is transmitted to a gear shift operation mechanism (not shown) in the case 7 so that a gear shift operation (not shown) is performed. It is supposed to be done.

The tip of the shift cable 3 has a lever 20 rotatably supported by a horizontal shaft 10, for example,
The lever 20 is connected to an intermediate portion P of a lever 20 that rotates integrally with the horizontal shaft 10 that is rotatably held, a counterweight 21 is attached to the tip of the lever 20, and the lever is supported by the horizontal shaft 10 and is supported. One end of the shift rod 14 is connected to an end portion Q of a lever 22 extending in the direction opposite to 20, and the other end of the shift rod 14 is connected to the power shift device 7, so that the displacement of the shift cable 3 in the longitudinal direction is shifted. By displacing the rod 14 in its axial direction,
The shift operation force is increased by the power shift device 15 and is transmitted to the shift operation mechanism in the case 7, so that the shift operation of the transmission is performed.

When the change lever 1 is in the shift neutral position, the lever 20 extends substantially vertically above the horizontal shaft 10, and therefore the center of gravity G of the counterweight 21 is disposed substantially vertically above the horizontal shaft 10 and the counterweight. The distance A from the center of gravity G of 21 to the axis O of the horizontal axis 10 is from the connection point P of the shift cable 3 to the lever 20 to the horizontal axis 1
Is greater than the distance B to the axis O of 0 and the horizontal axis 10
Distance C from the connecting point Q of the shift rod 14 to the lever 22 extending substantially vertically downward of the horizontal axis 10 to the axis O of the horizontal shaft 10.
Is configured to be smaller than the distance B.

In the above-described gear shift operating device, the lever 2 is connected to the shift cable 3 for transmitting the operating force of the change lever 1.
0 is connected, a counterweight 21 is attached to the end of the lever 20, and the counterweight 21 is rotated with the rotation of the lever 20. The transmission of the shift operation force variation to the change lever 1 via the shift rod 14, the lever 22 and the shift cable 3 in sequence can be easily reduced by the inertial force of the counterweight 21.

Also, the lever 20 is centered on the horizontal axis 10.
The counterweight 21 that rotates in accordance with the rotation of the change lever 1 is arranged such that, at the shift neutral position of the change lever 1, the center of gravity G is located substantially vertically above the horizontal shaft 10 and at a distance A from the horizontal shaft 10. During shift operation of the lever 1, the weight of the counterweight 21 acts in the direction of urging the operation of the change lever 1 to promote the gear closing, so that the operability of the change lever 1 can be reliably improved.

Further, the distance A from the center of gravity G of the counterweight 21 to the axis O of the horizontal shaft 10 is larger than the distance B from the connection point P of the shift cable 3 to the lever 20 to the axis O of the horizontal shaft 10. Therefore, since the inertial force of the counterweight 21 can be effectively applied when the shift cable 3 is operated, the weight of the counterweight 21 can be made relatively small.
The advantage of weight reduction is great for vehicles.

Moreover, since the distance C from the connecting point Q of the shift rod 14 to the lever 22 to the axis O of the horizontal shaft 10 is smaller than the distance B, the operating force of the shift cable 3 is relatively small. Therefore, the operability of the change lever 1 can be improved in this respect as well.

Further, at the neutral position of the change lever 1, the counterweight 21 is attached to the end of the lever 20 extending substantially vertically upward from the horizontal shaft 10, so that the lever 20 is operated when the gearshift is performed by operating the change lever 1. Since the counterweight 21 is displaced downward from the substantially highest position in accordance with the rotation, not only is gear drop which requires the counterweight 21 to be displaced upward, but it is also difficult to shift the gear by operating the change lever 1. Since the counterweight 21 is displaced upward when the machine is returned from the gear shift state to the shift neutral state, there is an advantage that the shift operation of the change lever 1 is less likely to go too far.

[0017]

In the gear shift operation device according to the present invention, the counterweight that rotates together with the lever about the rotation shaft of the lever has a center of gravity of the rotation shaft at the shift neutral position of the change lever. It is located vertically above the rotation axis, and the weight of the counterweight acts in the direction to bias the operation of the change lever during shift lever shift operation, ensuring the operability of the change lever. Since it can be improved to a higher level, there is a feature that the gear shifting operation becomes much easier.

[Brief description of drawings]

FIG. 1 is a schematic exploded perspective view of an embodiment of the present invention.

FIG. 2 is an explanatory view of a main part of the above-described embodiment.

FIG. 3 is a schematic exploded perspective view of a conventional device.

[Explanation of symbols]

1 change lever 2 Select cable 3 shift cable 10 Horizontal axis 14 shift rod 15 Power shift device 20 lever 21 counterweight 22 lever

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Claims (2)

[Claims] 1. A first transmission for transmitting an operating force of a change lever.
A member, a lever that is supported around a substantially horizontal shaft, is connected to the first member, and rotates according to the operating force; and a second that drives the transmission mechanism of the transmission in conjunction with the rotation of the lever. A gear shift having a member and a counterweight, which has a center of gravity at a distance from the shaft substantially vertically above the shaft at a shift neutral position of the change lever, and rotates about the shaft as the lever rotates. Operating device. 2. The gear shift operating device according to claim 1, wherein a distance from a center of gravity of the counterweight to the shaft is larger than a distance from a connecting point of the first member to the lever to the shaft.