JP2000177423A - Shift operation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the support rigidity of a shift lever case to a transmission case by providing the shift lever case connected to the transmission case and a gearshift shaft case with a plurality of extension rods. SOLUTION: Two, first and second extension rods 38, 40 have respective shift lever case side fixing parts 42, 50 collected together and connected to the shift lever case 24 and have transmission case side first and second fixing parts 44, 52 separated vertically and horizontally from each other and connected to the transmission case and a gearshift shaft case respectively. This shift operation device is so formed that the shift lever case is connected to the transmission case and the gearshift shaft case by two extension rods 38, 40. This constitution is connected and supported by two support points and the increase in the support points improves the support rigidity to the transmission.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a speed change operating device, and more particularly to a speed change operating device capable of preventing gear loss of a transmission and improving a sense of moderation when operating a shift lever.

[0002]

2. Description of the Related Art In a vehicle, a manual or automatic transmission is connected to an engine mounted vertically, and provided.
In some transmissions, a driving force generated by an engine is converted and taken out by the transmission, and wheels are driven via a propeller shaft. Manual transmissions
The transmission gear train is switched by the transmission operation device.

FIGS. 11 to 14 show a shift operation device of a manual transmission connected to an engine mounted vertically on a vehicle. FIG. 13 and FIG.
In the figure, 102 is an engine mounted vertically on a vehicle (not shown), 104 is a transmission vertically connected to the engine 102, and 106 is a transmission case.

[0004] The transmission case 106 includes an engine 10
It comprises a front upper case section 108, a front lower case section 110, a center case section 112, and a rear case section 114 on the two sides, and incorporates a plurality of speed change gear trains (not shown).

[0005] The transmission 104 switches a meshing state of a transmission gear train by a transmission operation device 116.
The shift operation device 116 is provided with a gear shift shaft case 120 that holds a gear shift shaft 118 above the rear case portion 112 of the transmission case 106. The gear shift shaft 118 operates each speed shift shaft by a gear shift arm (not shown) to switch the meshing state of the transmission gear train.

[0006] The shift operation device 116 has a shift lever 122 for switching the meshing state of the speed change gear train, which is spaced apart from the transmission case 106. The shift lever 122 is pivotally supported by the shift lever case 124 so as to be rotatable in the select direction and the shift direction.

[0007] The shift lever case 124 is provided to hold a control shaft 126 that is selected and shifted by the shift lever 122. The control shaft 126 is connected to the gear shift shaft 118 by a shaft coupling 128.

The transmission operating device 116 is provided with a shift lever case 124 connected to the transmission case 106 by a single extension rod 130. The extension rod 130 is shown in FIGS.
As shown in the figure, the lever-side mounting member 134 is fixedly provided on the shift lever case-side fixing portion 132 on one side in the longitudinal direction, and the transmission case-side fixing portion 136 on the other side in the longitudinal direction. Transmission side mounting member 1
38 are fixedly provided.

The extension rod 130 is shown in FIG.
-As shown in FIG. 14, the shift lever case side fixing portion 13
2 is attached to the shift lever case 124 by means of a lever-side mounting bolt 140, and the transmission-side mounting member 138 to which the transmission case-side fixing portion 136 is fixed is mounted on the transmission-side mounting boss of the rear case portion 114. It is attached to the portion 142 with a transmission-side attachment bolt 144.

As such a shift operating device, there are those disclosed in JP-A-8-183358 and JP-A-9-112691.

Japanese Unexamined Patent Application Publication No. 8-183358 discloses a pair of levers for holding a lower end of a lever body of a change lever and applying a select load to the change lever when the change lever is operated to select. And a select load applying mechanism provided with a leaf spring is provided so that the select load can be arbitrarily set.

Japanese Unexamined Patent Publication No. 9-112691 discloses an inner change lever provided between a U-shaped notch of an inner select lever and swinging about a shift pin on a shaft. The striking lever is rotated through the input block by the swing of the inner change lever to engage with the bracket arranged in an arc shape, and the shift fork is rotated by the inner change lever that rotates with the shaft to input the engine rotation from the speed change output side. Side, and the sleeve is engaged with the gear to perform the speed change.

[0013]

However, FIG.
14 is provided with a shift lever 122 disposed at a distance from the transmission case 106 so as to be pivotally supported by a shift lever case 124, and the shift lever case 124 is attached to one extension rod 1
30 is provided so as to be connected to the transmission case 106.

However, the shift lever case 124 is
By being supported by a single extension rod 130 apart from the transmission case 106,
Insufficient support rigidity could be obtained and the vehicle body (not shown)
Responsively to the vibration of the shift lever 122 and vibrates together with the shift lever 122 which is pivotally supported.

[0015] The vehicle generates vibration when the entire vehicle body swings up, down, left and right when traveling on a rough road. Engine 1
02, the transmission 104 integrally connected to the
Since it is mounted on the vehicle body by the elastic body, it shakes differently from the vehicle body. On the other hand, the shift lever 122 and the shift lever case 124 swing the same as the vehicle body.

For this reason, the transmission 104, the shift lever 122 and the shift lever case 124
The gears are shaken by different vibrations, causing a shift in the position of the gear shift shaft 118 with respect to the position of each speed shift shaft that can cut the transmission gear train, thereby causing the inconvenience of gear loss.

Further, since the shift lever case 124 cannot obtain sufficient support rigidity, as shown in FIG. 12, there is a disadvantage that the shift lever 122 bends at the time of the shift operation and the sense of moderation is impaired.

[0018]

SUMMARY OF THE INVENTION Accordingly, the present invention provides a gear shift shaft case for holding a gear shift shaft in a transmission case of a transmission connected to an engine vertically mounted on a vehicle in order to eliminate the above-mentioned disadvantages. A shift lever case is provided, which is mounted and provided, and pivotally supports a shift lever disposed separately from the transmission case in a select direction and a shift direction. The shift lever case is provided with a select operation and a shift by the shift lever. Hold and set the control axis to be operated,
The control shaft is connected to the gear shift shaft by a shaft coupling, and the shift lever case is connected to the transmission case and the gear shift shaft case by a plurality of extension rods.

The plurality of extension rods are
It consists of two first and second extension rods, and these two first and second extension rods are connected to the shift lever case by assembling the respective shift lever case side ends, and each transmission case side end is provided. Are separated from each other and are connected to the transmission case and the gear shift shaft case. The two first and second extension rods are formed by forming the first extension rod into a substantially linear shape and providing the first and second extension rods. The two extension rods are formed so as to be separated from the first extension rod on the transmission case side in a substantially polygonal line shape.

The plurality of extension rods are composed of two first and second extension rods, and these two first and second extension rods are assembled at a shift lever case side end to form the shift lever. The two first and second extensions are provided so as to be connected to the case and provided so as to be connected to the transmission case and the gear shift shaft case with the respective ends of the transmission cases being vertically and horizontally separated from each other. The rod is provided by forming the first extension rod in a substantially linear shape and providing the second extension rod in a substantially broken line shape so as to be vertically and horizontally separated from the first extension rod on the transmission case side. It is characterized by the following.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A shift operating device according to the present invention is provided with a shift lever case for pivotally supporting a shift lever disposed apart from a transmission case in a select direction and a shift direction. Since the case is connected to the transmission case and the gear shift shaft case by a plurality of extension rods, the rigidity of the shift lever case supported on the transmission case can be improved, and the effect of vibration can be reduced.

[0022]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 4 show a first embodiment of the present invention. 3 and 4, reference numeral 2 denotes an engine mounted vertically on a vehicle (not shown), reference numeral 4 denotes a transmission vertically connected to the engine 2, and reference numeral 6 denotes a transmission case.

The transmission case 6 includes a front upper case part 8 and a front lower case part 10 connected to the engine 2, a center case part 12 intermediate the front case part 8, and the engine 2.
And a rear case section 14 on the side away from the rear gear section, and incorporates a plurality of speed change gear trains (not shown).

The transmission 4 switches the engagement state of the transmission gear train by the transmission operation device 16. The speed change operation device 16 is connected to the rear case portion 12 of the transmission case 6.
A gear shift shaft case 20 for holding the gear shift shaft 18 is attached and provided above. The gear shift shaft 18 operates each speed shift shaft by a gear shift arm (not shown) to switch the meshing state of the transmission gear train.

The shift operation device 16 has a shift lever 22 for switching the meshing state of the transmission gear train, which is separated from the transmission case 6. Shift lever 22
Are pivotally supported by the shift lever case 24 so as to be rotatable in the select direction and the shift direction.

The shift lever case 24 includes a main body 26
The shift lever holding portion 28 and the control shaft holding portion 30
And a case-side mounting boss 32.

The shift lever case 24 pivotally supports the shift lever 22 on the shift lever holding portion 28 so as to be rotatable in the select direction and the shift direction.
And a control shaft 34 for selecting and shifting by the shift lever 22 is provided. The control shaft 34 is connected to the gear shift shaft 18 by a shaft coupling 36.

The shift operation device 16 has a shift lever case 24 connected to the transmission case 6 and the gear shift shaft case 20 by a plurality of extension rods.

In the first embodiment, as shown in FIGS. 1 and 2, two first and second extension rods 3 are provided.
The first extension rod 38 is formed in a substantially linear shape and provided, and the second extension rod 40 is formed in a substantially broken line shape so as to be separated from the first extension rod 38 on the transmission case 6 side. Provided.

At this time, the second extension rod 4
Numeral 0 is formed in a substantially broken line shape so as to be vertically and horizontally separated from the first extension rod 38 on the transmission case 6 side.

The first extension rod 38 has a shift lever case side first fixing portion 42 on one side in the longitudinal direction and a transmission case side first fixing portion 44 on the other side in the longitudinal direction.
Is provided. The shift lever case side first fixing portion 42 is provided with a tray-shaped lever side mounting member 46 fixed thereto. A transmission-side first attachment member 48 having a tubular shape is fixedly provided on the transmission case-side first attachment portion 44.

The second extension rod 40 has a shift lever case side second fixing portion 50 on one longitudinal side and a transmission case side second fixing portion 52 on the other longitudinal side.
Is provided. Shift lever case side second fixing portion 50
Is provided so as to be close to the shift lever case side first fixing portion 42 of the first extension rod 38 and is fixed to the lever side mounting member 46. A transmission-side second mounting member 54 having a tubular shape is fixedly provided on the transmission case-side second fixing portion 52.

The two first and second extension rods 38 and 40 are attached to the lever side mounting member 46 to which the assembled shift lever case side first and second fixing portions 42 and 50 are fixed. The portion 56 is mounted on the case-side mounting boss 32 of the shift lever case 24 by means of a lever-side mounting bolt 58.

The first extension rod 38 has a transmission-side first mounting member 48 to which the transmission case-side first mounting portion 44 is fixed, and a transmission-side first mounting bolt 60 to the transmission-side first mounting boss 60 of the rear case portion 14. 6
2 and attached.

Further, the second extension rod 40
The transmission-side second mounting member 54 to which the transmission case-side second fixing portion 52 is fixed is connected to the gear shift shaft case 2.
The transmission-side second mounting boss 64 is attached to the transmission-side second mounting boss 64 with a transmission-side second mounting bolt 66.

As described above, the two first and second extension rods 38 and 40 are provided by connecting the shift lever case side fixing portions 42 and 50 to the shift lever case 24 and providing the same. The first and second fixing portions 44 and 52 are connected to the transmission case 6 and the gear shift shaft case 20 so as to be vertically and horizontally separated from each other.

Thus, the shift operating device 16 of the first embodiment is provided with the shift lever case 24 connected to the transmission case 6 and the gear shift shaft case 20 by the two extension rods 38 and 40.

Next, the operation of the first embodiment will be described.

The shift operation device 16 is provided by attaching a gear shift shaft case 20 for holding a gear shift shaft 18 to the transmission case 6 of the transmission 4 connected to the engine 2 mounted vertically on the vehicle.
A shift lever case 24 is provided for pivotally supporting a shift lever 22 disposed at a distance from the shift lever 22 in a select direction and a shift direction.

The shift lever case 24 is provided with a control shaft 34 that is selected and shifted by the shift lever 22. The control shaft 34 is connected to the gear shift shaft 18 by a shaft coupling 36. .

The shift lever case 24 is made up of the transmission case 6 by two extension rods 38 and 40.
And the gear shift shaft case 20. 2
The first and second extension rods 38 and 40 of the book are
The first extension rod 38 is formed and provided in a substantially linear shape, and the second extension rod 40 is formed and provided in a substantially broken line shape so as to be vertically and horizontally separated from the first extension rod 38 on the transmission case side. ing.

As a result, the shift lever case 24
The two substantially bifurcated first and second extension rods 38 and 40 connect and support the transmission case 6 and the gear shift shaft case 20 at two different points in the vertical and horizontal directions at two support points. Therefore, the support rigidity for the transmission 4 can be improved by increasing the number of support points, and the movement of the shift lever case 24 follows the movement of the transmission 4 so as to be less affected by vibration. it can.

Therefore, the shift operation device 16 can prevent the shift lever case 24 from swaying differently with respect to the transmission 4.
4 can be prevented, and as shown in FIG. 4, the shift lever 22 can be prevented from bending on the shift lever case 24 side with respect to the transmission case 6 when the shift lever 22 is shifted. Moderation can be improved.

FIGS. 5 and 6 show a second embodiment of the present invention. The speed change operation device 16 of the second embodiment adds three third extension rods 68 to the first and second extension rods 38 and 40 to form three first to third extension rods 38, 40 and 68. , The shift lever case 24 is connected to the transmission case 6 and the gear shift shaft case 20.

The first extension rod 38 is formed in a substantially linear shape. The second extension rod 40 is formed in a substantially polygonal shape so as to be separated from the first extension rod 38 on the transmission case 6 side. The third extension rod 68 is formed in a substantially polygonal shape so as to be symmetrically spaced away from the first extension rod 38 on the transmission case 6 side on the side opposite to the second extension rod 40.

Accordingly, the second and third extension rods 40 and 68 are formed in a substantially broken line shape so as to be symmetrically spaced apart from the first extension rod 38 in the vertical and horizontal directions on the transmission case 6 side. Provided.

The first extension rod 38 has a shift lever case side first fixing portion 42 on one side in the longitudinal direction and a transmission case side first fixing portion 44 on the other side in the longitudinal direction.
Is provided. The tray-shaped lever-side mounting member 46 is fixed to the shift lever case-side first fixing portion 42. The transmission-side first attachment member 48 having the tubular shape is fixedly provided on the transmission case-side first attachment portion 44.

The second extension rod 40 has a shift lever case side second fixing portion 50 on one side in the longitudinal direction and a transmission case side second fixing portion 52 on the other side in the longitudinal direction.
Is provided. Shift lever case side second fixing portion 50
Is provided so as to be close to the shift lever case side first fixing portion 42 of the first extension rod 38 and is fixed to the lever side mounting member 46. The transmission-side second mounting member 54 having the tubular shape is fixedly provided on the transmission case-side second fixing portion 52.

The third extension rod 68 has a shift lever case-side third fixing portion 70 on one side in the longitudinal direction and a transmission case-side third fixing portion 72 on the other side in the longitudinal direction.
Is provided. Shift lever case side third fixing portion 70
Is provided so as to be close to the shift lever case side first fixing portion 42 of the first extension rod 38 and is fixed to the lever side mounting member 46. The transmission case-side third fixing portion 72 is provided with a cylindrical transmission-side third mounting member 74 fixed thereto.

The three first to third extension rods 38, 40, and 68 are connected to the lever-side mounting member 46 to which the assembled first to third fixing portions 42, 50, and 70 are attached. The lever-side mounting portion 56 is mounted on the case-side mounting boss 32 of the shift lever case 24 by means of a lever-side mounting bolt 58 in the same manner as in the first embodiment.

The first extension rod 38 has a mission-side first mounting member 48 to which the transmission case-side first fixing portion 44 is fixed, and a transmission-side first mounting bolt 60 to the mission-side first mounting boss 60 of the rear case portion 14. 6
2 and attached.

Further, the second extension rod 40
The transmission-side second mounting member 54 to which the transmission case-side second fixing portion 52 is fixed is connected to the gear shift shaft case 2.
The transmission-side second mounting boss 64 is attached to the transmission-side second mounting boss 64 with a transmission-side second mounting bolt 66.

Further, the third extension rod 68
The transmission-side third mounting member 74 to which the transmission case-side third fixing portion 72 is fixed is attached to the gear shift shaft case 2.
No. 0, which is mounted on a transmission-side third mounting boss (not shown) with a transmission-side third mounting bolt.

As described above, the shift operation device 1 of the second embodiment
The gear lever 6 is provided with the shift lever case 24 connected to the transmission case 6 and the gear shift shaft case 20 by three extension rods 38, 40, 68.

As a result, the shift lever case 24
The first to third extension rods 38, 40, and 68 are connected to the transmission case 6 and the gear shift shaft case 20 at three different positions in the vertical and horizontal directions by three support points. The support stiffness for the transmission 4 can be improved as compared with the first embodiment by increasing the number of support points, and the movement of the shift lever case 24 follows the movement of the transmission 4 so that the vibration Can be hardly affected.

For this reason, the speed change operation device 16 of the second embodiment is
Can prevent the shift lever case 24 from swinging differently with respect to the transmission 4, prevent the transmission 4 from slipping out of gears, and can prevent the shift lever 22 from shifting when the shift lever 22 is shifted. It is possible to prevent the case 24 from being bent, thereby improving the sense of moderation when operating the shift lever.

FIGS. 7 to 10 show a special structure of the present invention.
It shows a modified example. Shift operation device 1 of this modified example
6 is provided with a single extension plate 76 instead of a plurality of extension rods, and the extension plate 76 is connected to the transmission case 6 and the gear shift shaft case 20.

As shown in FIG. 7, the extension plate 76 is formed in a slender, substantially triangular shape, provided with one shift lever case side fixing portion 78 on one side in the longitudinal direction, and the transmission case side first fixing portion 78 on the other side in the longitudinal direction. A portion 80 is provided, and a second transmission case-side fixing portion 82 is provided so as to be vertically and horizontally separated from the transmission case-side first fixing portion 80.

The shift lever case-side fixing portion 78 is provided with the tray-shaped lever-side mounting member 46 fixed thereto. The transmission-side first attachment member 48 is fixedly provided on the transmission case-side first attachment portion 80. The cylindrical transmission-side second mounting member 54 is fixedly provided on the transmission case-side second fixing portion 82.

The extension plate 76 connects the lever-side mounting portion 56 of the lever-side mounting member 46 to which the shift lever case-side fixing portion 78 is fixed, as in the first embodiment, to the case-side mounting boss of the shift lever case 24. Part 3
2 is provided by being attached to a lever-side mounting bolt 58.

The extension rod plate 7
6 attaches the transmission-side first mounting member 48 to which the transmission case-side first fixing portion 80 is fixed, to the rear case portion 1.
4 is attached to the first transmission-side mounting boss portion 60 with the first transmission-side mounting bolts 62.

Further, the extension plate 76
The transmission-side second mounting member 54 to which the transmission-case-side second mounting portion 82 is fixed is mounted on the transmission-side second mounting boss 64 of the gear shift shaft case 20 by a transmission-side second mounting bolt 66.

As described above, the extension plate 7
The transmission case 6 and the gear shift shaft 6 are provided by connecting a shift lever case side fixing portion 78 to the shift lever case 24 and separating the transmission case side first and second fixing portions 80 and 82 vertically and horizontally. It is provided in connection with the case 20.

As a result, the shift lever case 24
With one extension plate 76, the transmission case 6 and the gear shift shaft case 20 are connected and supported at two different positions in the vertical and horizontal directions at two support points. 4 can be improved, the movement of the shift lever case 24 follows the movement of the transmission 4, and the effect of vibration can be reduced.

For this reason, the speed change operation device 16 of this modification is
Can prevent the shift lever case 24 from swinging differently with respect to the transmission 4, prevent the transmission 4 from slipping out of gears, and can prevent the shift lever 22 from shifting when the shift lever 22 is shifted. It is possible to prevent the case 24 from being bent, thereby improving the sense of moderation when operating the shift lever.

The speed change operation device 16 of this modification is
Since the shift lever case 24 is connected to the transmission case 6 and the gear shift shaft case 20 by one extension plate 76, the number of parts can be reduced as compared with the above-described embodiment.

Note that the extension plate 76
By providing the transmission case-side third fixing portion and fixing the transmission-side third mounting portion, similarly to the second embodiment,
The shift lever case 24 can be connected to the transmission case 6 and the gear shift shaft case 20 at three points.

[0068]

As described above, the speed change operating device of the present invention includes a plurality of shift lever cases which pivotally support a shift lever provided separately from a transmission case in a select direction and a shift direction. With the extension rod connected to the transmission case and the gear shift shaft case, the support rigidity of the shift lever case can be improved, and the influence of vibration can be reduced.

Therefore, this shift operating device can prevent the shift lever case from swinging differently with respect to the transmission, prevent the transmission from slipping out of gear, and can prevent the shift lever from shifting when the shift lever is shifted. It is possible to prevent the case from bending, and to improve the sense of moderation when operating the shift lever.

[Brief description of the drawings]

FIG. 1 is a partially broken plan view of an extension rod showing a first embodiment of a speed change operation device according to the present invention.

FIG. 2 is a partially broken side view of an extension rod.

FIG. 3 is a plan view of the transmission.

FIG. 4 is a side view of the transmission.

FIG. 5 is a partially broken plan view of an extension rod showing a second embodiment of the present invention.

FIG. 6 is a partially cutaway side view of the extension rod.

FIG. 7 is a partially broken plan view of an extension rod showing a modification of the present invention.

FIG. 8 is a partially cutaway side view of the extension rod.

FIG. 9 is a sectional view taken along line IX-IX in FIG. 8;

FIG. 10 is a sectional view taken along line XX of FIG. 8;

FIG. 11 is a partially broken plan view of an extension rod showing a conventional example of a speed change operation device.

FIG. 12 is a partially cutaway side view of the extension rod.

FIG. 13 is a plan view of the transmission.

FIG. 14 is a side view of the transmission.

[Explanation of symbols]

 Reference Signs List 2 engine 4 transmission 6 transmission case 16 speed change operation device 18 gear shift shaft 20 gear shift shaft case 22 shift lever 24 shift lever case 34 control shaft 36 shaft coupling 38 first extension rod 40 second extension rod

Continued on the front page F term (reference) 3D040 AA01 AA05 AA22 AB01 AC21 AC28 AC30 AC38 AC42 AC45 AE19 AF08 3J052 AA02 FB41 FB46 GA09 GD11 KA11 LA01 3J067 AA09 AB02 BA02 DA54 DA56 FB57 FB62 GA01

Claims (5)

[Claims] 1. A gear shift shaft case for holding a gear shift shaft is attached to a transmission case of a transmission connected to an engine vertically mounted on a vehicle, and provided.
A shift lever case is provided for pivotally supporting a shift lever disposed apart from the transmission case in a select direction and a shift direction, and a select operation and a shift operation are performed on the shift lever case by the shift lever. The control shaft is connected to the gear shift shaft by a shaft coupling, and provided.
A shift operating device, wherein the shift lever case is connected to the transmission case and the gear shift shaft case by a plurality of extension rods. 2. The plurality of extension rods are composed of two first and second extension rods, and these two first and second extension rods collect the respective shift lever case side ends and perform the shift operation. 2. The speed change operation device according to claim 1, wherein the transmission operation device is provided so as to be connected to a lever case and is connected to the transmission case and the gear shift shaft case with the respective transmission case side ends being separated. 3. The two first and second extension rods are provided such that the first extension rod is formed in a substantially linear shape and the second extension rod is separated from the first extension rod on the transmission case side. The speed change operation device according to claim 2, wherein the speed change operation device is provided in a substantially polygonal shape. 4. The plurality of extension rods are composed of two first and second extension rods, and the two first and second extension rods collect the ends of the respective shift lever cases and perform the shift operation. 2. The transmission operating device according to claim 1, wherein the transmission operating device is provided so as to be connected to the lever case and is connected to the transmission case and the gear shift shaft case with the respective transmission case side ends being vertically and horizontally separated from each other. . 5. The two first and second extension rods are provided with the first extension rod formed in a substantially linear shape and the second extension rod is arranged vertically from the first extension rod on the mission case side. 5. The speed change operation device according to claim 4, wherein the speed change operation device is formed in a substantially polygonal shape so as to be separated in a horizontal direction.