JPH0791540A - Operating mechanism for manual transmission - Google Patents

Abstract

PURPOSE:To provide an operating mechanism appropriated for a manual transmission at six-stage having the structure that a fifth stage speed and a reverse stage are opposite to each other in a gear train and a sixth-stage speed is independent thereof CONSTITUTION:When a manual transmission is operated at a fifth-sixth speed select position, a shift and select lever shaft 10 is connected to a fork shaft 50 for sixth-speed or an idler shaft 60 through a reversing mechanism A and a one-way mechanism B, and a fork shaft 40 for fifth-speed-reverse and the idler shaft 60 are connected to each other through a connecting mechanism C. When the manual transmission is operated at a reverse select position, the shift and select lever 10 is directly connected to the fork shaft 40 for fifth-speed- reverse, and the fifth-speed-sixth-speed are opposite to each other and a reverse is separately operated with a shift pattern.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operating mechanism of a manual transmission used in a vehicle such as an automobile, and more particularly to an operating mechanism of a manual transmission capable of selectively operating first to sixth speed and reverse.

[0002]

2. Description of the Related Art A 6-speed manual transmission has a 5-speed direct connection with 5 speeds.
5 speed-reverse facing gear train (see FIG. 8)
A gear train may be constructed by adding a sixth speed section to the rear side of a manual transmission for shifting gears (see FIG. 2).

[0003]

In the above-described 6-speed manual transmission, the fifth speed and the reverse speed are opposed to each other in the gear train, and the sixth speed is independent of them, but good operability is achieved. In order to secure the above, it is necessary to configure the operation mechanism so that the shift pattern is 5-6 speed opposite and reverse independent. The present invention has been made in view of the above-described necessity, and an object thereof is suitable for a 6-speed manual transmission having a structure in which the fifth speed and the reverse are opposed to each other in the gear train and the sixth speed is independent of them. To provide an operating mechanism.

[0004]

In order to achieve the above-mentioned object, in the present invention, the operating mechanism of the manual transmission is supported by a case so as to be rotatable and axially movable, and is axially moved by a shift operation. Shift and select lever shaft that is moved and rotated by select operation,
The shift-and-select lever shaft is integrally arranged with the shift head engaged with the shift-and-select lever shaft when the shift-and-select lever shaft is operated to the 1-2 speed select position, and is arranged parallel to the shift-and-select lever shaft to move in the axial direction to the case. A 1-2 speed shift fork integrally assembled to a 1-2 speed fork shaft that is movably supported, and the shift and select lever shaft when the shift and select lever shaft is operated to the 3-4 speed select position. 3 which is integrally assembled with a 3-4 speed fork shaft which has a corresponding shift head and which is arranged in parallel with the shift and select lever shaft and is axially movable in the case.
-4 speed shift fork and a shift head that engages with the shift and select lever shaft when the shift and select lever shaft is operated to the reverse select position are integrally provided, and are arranged parallel to the shift and select lever shaft. The 5th-reverse shift fork integrally assembled to the 5th-reverse fork shaft supported by the case so as to be axially movable, and the shift and select lever shaft were operated to the 5th-6th select positions. When the shift and select lever shaft shifts between the neutral position and the fifth speed shift position by having a one-way head that engages with the shaft via a reversing mechanism, the shift and select lever shaft is arranged in parallel with the shift and select lever shaft. An idler shaft supported by the case to be movable in the axial direction And a shift fork for 6th speed are integrally provided and arranged parallel to the shift and select lever shaft, and are supported by the case so as to be axially movable. And a one-way mechanism that integrally moves the 6-speed fork shaft in the axial direction, and connects the idler shaft and the 5-speed-reverse fork shaft when the shift and select lever shaft is operated to the 5-6 speed select position. It is configured to include a connecting mechanism.

[0005]

In the operating mechanism according to the present invention, when the shift lever is selectively operated to the 1-2 speed select position and the shift operation is performed to the 1st speed position or the 2nd speed position, the 1st and 2nd speed is used in the same direction as the shift and select lever shaft. The fork shaft moves in the axial direction, and the 1st-2nd shift fork integrated therewith reaches the 1st gear position or the 2nd gear position to reach the 1st gear or 2nd gear.
The speed is established. Also, when the shift lever is selectively operated to the 3-4th speed select position and the shift operation is performed to the 3rd speed position or the 4th speed position, the 3-4th speed fork shaft moves axially in the same direction as the shift and select lever shaft. The 3-4 speed shift fork integrated therewith reaches the 3rd speed position or the 4th speed position to establish the 3rd speed position or the 4th speed position.

Further, when the shift lever is selected to the 5th-6th speed select position, the shift and select lever shaft is engaged with the one-way head through the reversing mechanism, and the idler shaft and the fifth speed-reverse fork shaft are connected. It is connected by the mechanism. Therefore, when the shift lever is shifted to the fifth speed position in such a state, the idler shaft axially moves in the direction opposite to the shift and select lever shaft via the reversing mechanism and the one-way mechanism, and this movement is mediated by the connecting mechanism. The fifth speed-reverse fork shaft is moved in the axial direction by being transmitted to the fifth speed-reverse fork shaft, and the fifth speed-reverse shift fork integrated therewith reaches the fifth speed position to establish the fifth speed. On the other hand, when the shift lever is shifted to the 6th speed position in the 5-6th speed select state described above, the 6th speed fork shaft axially moves in the direction opposite to the shift and select lever shaft via the reversing mechanism and the one-way mechanism. The 6th-speed shift fork integrated therewith reaches the 6th-speed position to establish the 6th-speed stage.

When the shift lever is selected to the reverse position, the shift and select lever shaft engages with the shift head integral with the fifth speed-reverse fork shaft. For this reason, when the shift lever is operated to shift to the reverse position in such a state, the fifth speed-reverse fork shaft axially moves in the same direction as the shift and select lever shaft, and the fifth speed-reverse shift fork is integrated therewith. Reaches the reverse position and the reverse gear is established.

The operation when the shift lever is shifted from each of the above shift positions to the neutral position is the reverse operation of each of the above operations, and it can be easily understood from the above operations. The description is omitted.

[0009]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows an operating mechanism of a manual transmission according to the present invention. This operating mechanism is a 6-speed gear train for automobiles shown in FIG. The gears are for switching (not shown), and include a shift-and-select lever shaft 10 formed by integrally assembling the shift-and-select levers 11, 12, 13; A 1-2 speed fork shaft 20 in which a 1-2 speed shift fork 22 is integrally assembled.
And a 3-4 speed fork shaft 30 in which a 3-4 speed shift head 31 and a 3-4 speed shift fork 32 are integrally assembled, and a 5 speed-reverse shift head 41.
And a fifth speed-reverse fork shaft 40 integrally assembled with a fifth speed-reverse shift fork 42,
As shown in FIG. 3, the sixth speed fork shaft 50 integrally assembled with the sixth speed shift fork 51 and the idler shaft 60 are provided, and the reversing mechanism A, the one-way mechanism B, and the connecting mechanism C are provided. It is configured to be switched by a shift lever (not shown) operated according to a shift pattern.

Each shaft 10, 20, 30, 40, 5
0 and 60 are the input shaft 101 and the output shaft 10 shown in FIG.
2, the shaft 10 is rotatably and axially movably supported by the case 100, and the other shafts 20, 30, 40, 50, 60 are arranged in parallel with the case 10.
It is supported at 0 so that it cannot rotate but can move in the axial direction. In addition, each shaft 10, 20, 30, 40 and the case 100
A known ball detent device D for elastically fixing each shaft at each shift position is interposed therebetween.

The shift and select lever 11 is shown in FIG.
As described in detail in the above, when the shift-and-select lever shaft 10 is operated to the 1-2 speed select position, the 1-2 speed shift head 21 of the 1-2 speed fork shaft 20 is engaged with the shift head 21. When engaged in the -4th speed select position, it engages with the 3rd-4th speed shift head 31 of the 3rd-4th speed fork shaft 30, and when operated in the 5th-6th speed select position and the reverse select position both shift heads Two
It is configured so as to be disengaged with 1, 31. In addition,
In Figure 4, the shift and select lever shaft 10 is 3-
The figure shows a state in which it is operated to the 4th speed select position.

Further, the shift and select lever 12
5, the shift and select lever shaft 10 is engaged with the reversing lever 71 of the reversing mechanism A when the shift and select lever shaft 10 is operated to the 5-6th speed select position, and is operated to other select positions. When it is turned on, the reversing lever 71 is disengaged. The reversing mechanism A includes a reversing lever 71 and a case 1 as shown in FIGS.
00 is configured by a base 72 that swingably supports a reversing lever 71 via a pin 73, and the reversing lever 71 is constantly engaged with the one-way head 81 of the one-way mechanism B at one end and the other end. The shift and select lever 12 is selectively engaged with.

Further, the shift and select lever 13
As shown in detail in FIG. 6, when the shift and select lever shaft 10 is operated to the reverse select position, it engages the 5th speed-reverse shift head 41 of the 5th speed-reverse fork shaft 40, The shift head 41 is disengaged when operated to any other select position.

The 1st-2nd speed shift fork 22 is always engaged with the 1st-2nd speed switching connecting sleeve 103 shown in FIG. 2 so as to integrally move in the axial direction.
The 3-4 speed shift fork 32 is the 3-4 speed shift fork shown in FIG.
It is configured to be constantly engaged with the speed switching connecting sleeve 104 and integrally move in the axial direction. The fifth-speed / reverse shift fork 42 is always engaged with the fifth-speed / reverse switching connection sleeve 105 shown in FIG. 2 and is configured to integrally move in the axial direction. The 6-speed shift fork 51 is always engaged with the 6-speed switching connecting sleeve 106 shown in FIG. 2 and is configured to integrally move in the axial direction.

The one-way mechanism B is known per se and, as shown in FIGS. 1 and 5, is fixed to the one-way head 81 and the 6th speed fork shaft 50, and contacts one end of the one-way head 81. Clip 82 to touch
A clip 83 fixed to the idler shaft 60 and abutting against the other end of the one-way head 81, and a vertical groove formed on the idler shaft 60 side of the sixth speed fork shaft 50 movably assembled in the one-way head 81. 5
0a or a connecting member that engages with the vertical groove 60a formed on the side of the 6-speed fork shaft 50 of the idler shaft 60 to integrally connect the one-way head 81 to the 6-speed fork shaft 50 or the idler shaft 60 (in FIG. (Both ends appear as hemispherical pins and appear as balls in FIG. 5) 84, and the vertical groove 50a,
Both side walls of 60a are inclined surfaces. Therefore, in the one-way mechanism B, when the shift and select lever shaft 10 is operated to the 5th-6th speed select position to axially move between the neutral position and the 5th speed position, the one-way head 81 moves through the reversing lever 71. When the shift and select lever shaft 10 axially moves between the neutral position and the sixth speed position, the sixth speed fork shaft 50 integrally moves. Move in the direction. A well-known ball detent device D for elastically fixing at each shift position is interposed between the one-way head 81 and the case 100.

As shown in FIGS. 1 and 6, the coupling mechanism C includes a rotating arm 91 which is rotatable on the idler shaft 60 and is axially immovable by both clips 95 and 96, and a rotating arm 91. Speed-reverse fork shaft 40
A swing arm 92 that is rotatable upward and is mounted axially immovably by a shift head 41 and a clip 97.
A connecting pin 93 fixed to the shift and select lever 13 and extending in the axial direction to be constantly engaged with one end of the swing arm 92; and a connecting pin 93 fixed to the rotating arm 91 and extending in the axial direction to the other end of the swing arm 92 at all times. Connecting pin 94 to engage
When the shift and select lever shaft 10 is operated to the 5-6th speed select position, the tip of the rotary arm 91 engages with the 5th speed-reverse shift head 41 and the idler shaft 60 and the 5th speed. The reverse fork shaft 40 is connected and integrally moved in the axial direction. As another example of the structure for connecting the rotating arm 91 to the shift head 41, as shown in FIG. 6, instead of the swing arm 92, the bar 11 is used.
1 is supported by the shift head 41, and the pawls 112 and 113 are formed on the lever 13 and the rotating arm 91.
There is a structure in which 1 is biased counterclockwise by a spring S. In this case, when the select operation is performed to the 5th-6th speed select position, the shift and select lever shaft 10 rotates, and the claw 112 of the lever 13 pushes the claw 113 of the rotating arm 91 via the bar 111 to rotate the rotating arm 91. Rotates clockwise and engages with the shift head 41. At other select positions, the rotating arm 91 is disengaged from the shift head 41 by the spring S.

In the present embodiment constructed as described above, when the shift lever is selected to the 1-2 speed select position, the shift and select lever shaft 10 is rotated and the shift and select lever 11 is used for 1-2 speed. It engages with the shift head 21, and the shift lever is 3-4.
When the select operation is performed to the speed select position, the shift and select lever shaft 10 rotates and the shift and select lever 11 engages with the 3-4 speed shift head 31. Therefore, when the shift lever is selectively operated to the 1st-2nd speed select position and the shift operation is performed to the 1st speed position or the 2nd speed position, the 1-2nd speed fork shaft 20 is axially moved in the same direction as the shift and select lever shaft 10. The shift fork 22 for the 1st and 2nd speeds, which is moved together with the 1st and 2nd speeds, is established to reach the 1st or 2nd speed position. Further, when the shift lever is selectively operated to the 3-4th speed select position to shift to the 3rd speed position or the 4th speed position, the 3rd-4th speed fork shaft 30 is axially moved in the same direction as the shift and select lever shaft 10. Then, the shift fork 32 for the third and fourth speeds, which is integrated therewith, reaches the third speed position or the fourth speed position, and the third speed stage or the fourth speed position is established.

Further, when the shift lever is selected to the 5th-6th speed select position, the shift and select lever shaft 10 rotates and the shift and select lever 1
2 engages with one end of the reversing lever 71 of the reversing mechanism A, and the swing arm 92 of the coupling mechanism C oscillates as the shaft 10 rotates, whereby the tip of the rotating arm 91 moves to the 5th-reverse shift head. 41 is engaged. Therefore, the shift and select lever shaft 10 engages with the one-way head 81 via the reversing mechanism A, and the idler shaft 60 and the fifth speed-the reverse fork shaft 40 and the rotating arm 91 and the fifth speed of the connecting mechanism C-.
They are connected via a reverse shift head 41. Therefore, when the shift lever is shifted to the fifth speed position in this state, the idler shaft 60 axially moves in the direction opposite to the shift and select lever shaft 10 via the reversing mechanism A and the one-way mechanism B, and this movement is linked. The fifth gear-reverse fork shaft 40 is transmitted through the mechanism C to the fork shaft 40 to move in the axial direction, and the fifth gear-reverse shift fork 42 integrated therewith reaches the fifth gear position to establish the fifth gear. . On the other hand, when the shift lever is shifted to the 6th speed position in the above-mentioned 5th-6th speed select state, only the 6th speed fork shaft 50 moves through the reversing mechanism A and the one-way mechanism B to the shift and select lever shaft 10.
The 6th-speed shift fork 51, which is integral with the shaft, moves axially in the opposite direction to the 6th-speed position and the 6th-speed stage is established.

Further, when the shift lever is selected to the reverse position, the shift and select lever shaft 10 is rotated and the shift and select lever 13 is engaged with the fifth speed-reverse shift head 41. For this reason,
When the shift lever is operated to shift to the reverse position in such a state, the fifth speed-reverse fork shaft 40 axially moves in the same direction as the shift and select lever shaft 10, and the fifth speed-reverse shift fork 42 integrated therewith. Reaches the reverse position and the reverse gear is established.

The operation when the shift lever is shifted from each of the above shift positions to the neutral position is the reverse operation of each of the above operations and can be easily understood from the configuration of the present embodiment and each of the above operations. Therefore, the explanation is omitted.

The operating mechanism shown in FIG. 7 is for switching the five-speed gear train for automobiles shown in FIG. 8 (a structure in which the sixth gear is eliminated from the gear train of FIG. 2), and is shown in FIG. The shift lever is operated in accordance with the shift pattern. By the way, the operation mechanism of FIG. 7 is the same as the operation mechanism of FIG.
Speed fork shaft 50 and idler shaft 60 and 6
The shift fork 51 for speed, the one-way mechanism B, the connecting mechanism C, the shift and select lever 13 and the like are eliminated, and as shown in FIGS.
Alternatively, the configuration is such that the reversing lever 71 is selectively engaged, and parts are shared with the operation mechanism of FIG.

[0022]

In summary, the operating mechanism according to the present invention is employed in a five-speed manual transmission that is a gear train (refer to FIG. 8) in which five speeds are directly connected to each other and which is opposed to fifth speed and reverse (see FIG. 7). 5) in the gear train by adding the 6-speed fork shaft 50, the idler shaft 60, the 6-speed shift fork 51, the one-way mechanism B, the coupling mechanism C, the shift and select lever 13 and the like illustrated in FIG. It is adopted in a 6-speed manual transmission having a structure in which the 6th speed is independent with respect to the 5th speed and the reverse, and the shift pattern is 5th-6th speed opposite and reverse independent. And the operability is good, and the operating mechanism adopted in the manual transmission with 5 speeds can be effectively used, so that parts can be shared and manufactured at low cost. It can be.

[Brief description of drawings]

FIG. 1 is a development view showing an example of an operating mechanism of a manual transmission according to the present invention.

FIG. 2 is a skeleton diagram showing a 6-speed gear train for an automobile operated by the operation mechanism shown in FIG.

FIG. 3 is a shift pattern diagram of the operation mechanism shown in FIG.

4 is a cross-sectional view taken along line 4-4 of FIG.

5 is a cross-sectional view taken along line 5-5 of FIG.

6 is a sectional view taken along line 6-6 of FIG.

FIG. 7 is a development view showing an example of an operation mechanism for a 5-speed manual transmission.

8 is a skeleton diagram showing a gear train for 5-speed gear shifting for an automobile operated by the operation mechanism shown in FIG. 7. FIG.

9 is a shift pattern diagram of the operating mechanism shown in FIG.

10 is a cross-sectional view taken along line 10-10 of FIG.

[Explanation of symbols]

10 ... shift and select lever shaft, 20 ... 1
-Second speed fork shaft, 21 ... 1-2 speed shift head, 22 ... 1-2 speed shift fork, 30 ... 3-4
Speed fork shaft, 31 ... 3-4 speed shift head, 32 ... 3-4 speed shift fork, 40 ... 5 speed-reverse fork shaft, 41 ... 5 speed-reverse shift head, 42 ... 5 speed- Shift fork for reverse,
50 ... 6-speed fork shaft, 51 ... 6-speed shift fork, 60 ... idler shaft, 81 ... One-way head, 100 ... Case, A ... Inversion mechanism, B ... One-way mechanism, C ... Coupling mechanism.

Claims (1)

[Claims] 1. A shift-and-select lever shaft, which is rotatably and axially movably supported by a case, axially moved by a shift operation, and rotated by a select operation, and the shift-and-select lever shaft is a 1-2 speed select. Fork shaft for 1-2 speed, which has a shift head integrally engaged with the shaft when operated to a position and is arranged in parallel with the shift and select lever shaft and supported by the case so as to be axially movable. The shift fork for 1-2 speed integrally mounted on the shift fork and the shift head for engaging with the shift and select lever shaft when the shift and select lever shaft is operated to the 3-4 speed select position. The shift and select lever is arranged in parallel with the shaft and supported by the case so as to be movable in the axial direction. It has a 3-4 speed shift fork integrally assembled to a 4 speed fork shaft, and a shift head that engages with the shift and select lever shaft when the shift and select lever shaft is operated to a reverse select position. Shift and select lever fork shaft disposed in parallel with the shift and select lever shaft and movably supported in the case in the axial direction, and a fifth speed-reverse shift fork integrally assembled with the shift fork shaft; The shift-and-select lever shaft shifts between the neutral position and the fifth speed shift position by having a one-way head that engages with the lever shaft via a reversing mechanism when the lever shaft is operated to the fifth-speed shift position. When it is placed parallel to the shift and select lever shaft and moves axially in the case When the idler shaft supported in the axial direction is integrally moved in the axial direction and when shifting between the neutral position and the 6th speed shift position, the 6th speed shift fork is integrally provided and is parallel to the shift and select lever shaft. A one-way mechanism for integrally moving the fork shaft for 6th speed, which is arranged and supported in the case so as to be axially movable, and the idler when the shift and select lever shaft is operated to the 5th-6th speed select position. An operating mechanism for a manual transmission including a connecting mechanism for connecting a shaft and the fifth-reverse fork shaft.