JP3367172B2 - Transmission operation device for powered vehicle - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power vehicle such as a tractor.
With regard to both shift operation devices, the arrangement and operation of the shift levers are facilitated by lever brackets capable of operably mounting and supporting a plurality of shift levers. 2. Description of the Related Art In a structure in which a shift lever is mounted and supported on a bracket, since a plurality of shift levers are arranged only on one side of the bracket, the shift levers can be moved in the front-rear direction. The relative position such as the interval of is limited,
The lever arrangement is difficult to operate. According to the present invention, a cockpit 10 is arranged above a transmission case 1 and a fender covering a rear wheel beside the transmission case 1 and the cockpit 10.
2 , a lever bracket 3 is mounted between one side of the transmission case 1 and the outer fender 2, and the inside of the lever bracket 3 is changed.
Shift the speed lever back and forth to support it,
On one side of the left and right of the bar bracket 3, one shift lever
Guides the shaft 23 to be supported and this shift lever to the left and right and back and forth
Motor vehicle, characterized in that a lever the slide guides 30
The structure of both shift operation devices is adopted. The lever bracket 3 is mounted on the outer surface of the transmission case 1 between the fender 2 and the transmission levers 4 and 5 are mounted on the inside and outside of the lever bracket 3. Since the gears are supported, the gears are arranged so as not to interfere with each other between the gear shift levers 4 and 5 for performing gear shift operations in the front-rear direction along the lever bracket 3. It can be operated even in the intersecting relational position, the degree of freedom of setting the shift levers 4 and 5 is increased, and the lever bracket 3 and the shift lever 4 are provided between different tractor bodies such as specifications, models and transmissions. , 5 etc. can be easily shared. Ma
Also, one shift lever 5 is supported on the lever bracket 3.
Shaft 23 and the speed change lever 5 are guided left and right and back and forth.
Since the lever guide 30 is assembled,
Before attaching to the case 1, support the lever bracket 3
Gear assembly, making it easy to disassemble and assemble the speed change operation unit.
You. [0005] A tractor body includes a clutch housing, from a front engine to a rear rear transmission case 6.
A main transmission, an auxiliary transmission, and a power take-out transmission that change the speed of traveling transmission from inside the clutch housing to inside the front transmission case 1 are connected to the front transmission case 1. . [0006] At the left and right outer portions of the transmission cases 1 and 6, fenders 2 for covering rear wheels are mounted on a frame 7 provided along the front and rear direction.
In between, the hydraulic case 8 on the rear transmission case 6
A cockpit 10 is mounted on a seat floor 9 so as to cover the vehicle. Below the seat floor 9 and on the left side of the front transmission case 1, the lower end of the lever bracket 3 is attached with bolts 11, and the upper part of the lever bracket 3 is an intermediate portion between the outer surface of the front transmission case 1 and the fender 2. Position. The sub-shift lever 4, the power take-out shift lever 5, and the like are attached to the lever bracket 3. The sub-transmission lever 4 is located at the front outside of the lever bracket 3 and is attached to the support metal 12 by bolts 13. The auxiliary transmission lever 4 has a ball seat 14 and can swing in any direction with respect to the support metal 12. The lower end of the shift lever 4 is fitted to a socket arm 16 integral with an arm shaft 15 projecting to the left side of the transmission case 1 so that the auxiliary shift lever 4
The arm shaft 15 can be moved or rotated in the axial direction and around the axis by the operation described above, and the shifters 18 and 19 are fixed by the shifter arm 17 fixed to the inner end of the arm shaft 15.
, The sub-shift operation can be performed. The upper end of the auxiliary transmission lever 4 can be operated by being guided by a lever guide 20 provided along the inside of the aender 2 on the seat floor 9. Push button 2 that can be turned ON and OFF
The speed change switch is provided in each of the first and second modes, and each time the push button 21 is pressed, the speed of the main transmission can be increased by one step.
Each time is pressed, the speed can be reduced one by one. The main transmission can operate the shift switch by operating the shift switch by operating the shift switch by operating the shift switch and operating the shifter by the output from the controller. The power take-out shift lever 5 is connected to the seat floor 9
, And the base portion is pivotally supported by a support shaft 23 so as to be vertically rotatable in an upper central portion inside the lever bracket 3, and the power take-out speed change lever 5 moves left and right in the direction of the support shaft 23. By tilting the support shaft 2
The power take-off transmission can be selectively operated by engaging the operation arms 24 and 25 rotatable around three times. Each of the operation arms 24 and 25 is connected to an arm 28 of each of the arm shafts 27 and 28 of the rear transmission case 6 via a lot 26. The arm shafts 27 and 28 are configured to interlock a shifter of a power take-out transmission in the rear transmission case 6. The support shaft 23 of the power take-off speed change lever 5
Is fixed to the lever bracket 3 by a pin 29 while being prevented from rotating. A lever guide 30 for guiding the movement of the lever 5 is fixed to the lever bracket 3 by a bolt 31. In such a configuration, the supporting metal 12 for mounting and supporting the sub-transmission lever 4 is provided.
A bolt hole A is provided on the lever bracket 3 at a position slightly displaced from the mounting position by the bolt 13. In a specification in which the shift operation of the main transmission is performed by the main shift lever, the support metal of the main shift lever is connected to the bolt hole A. Attach to A.
At this time, the supporting metal 33 of the auxiliary transmission lever 32 is attached to the bolt hole B on the rear side. The sub-shift lever 33 is not provided with a push-button shift switch. When the main transmission lever and the sub transmission lever 32 are mounted, arm shaft holes 34 and 35 for supporting an arm shaft having a socket arm operated by the main transmission lever and the sub transmission lever 32 are formed in the lower portion of the lever bracket 3. . 3 and 4, in a reversing mechanism for switching the reversing mechanism in the clutch housing 36, an interlocking rod 37 is provided in a substantially horizontal state so that a smooth operation can be performed. The arm shaft 38 is oriented vertically to the upper center of the clutch housing 36 and attached with a support metal 39. The lower end of the arm shaft 38 has a shifter to switch the reverser from neutral N to forward F and reverse R. It is configured to be able to. A reversing shaft 42 having a reversing lever together with a steering shaft 41 is provided on the steering post 40.
Is supported by a shaft cylinder 53, and the lower end of the reverser shaft 42 is connected to a vertical shaft 47 supported on the clutch housing 36 via a universal joint 43, a substantially vertical shaft 44, a universal joint 45, and the like. Be linked. The lower end of the shaft 47 and the upper end of the arm shaft 38 each have an arm 4
8 and 49 are fixed, and these arms 48 and 49 are connected to each other in a substantially horizontal state by an interlocking rod 37 that can be adjusted to expand and contract via a ball joint. By the reversing operation of the reversing lever, the arm 48 is rotated through the reversing shafts 42, 44, and 47, and further, the interlocking rod 37, the arm 49, the arm shaft 38, and the like are rotated to switch the reversing device. I do. Reference numeral 50 denotes a housing cover which covers the upper side of the clutch housing 36. An opening is formed in an upper portion where the reversing shaft 47 and the interlocking rod 37 are located, and a lid 46 which can open and close the opening is detachably attached. It is provided in. The reverser shaft 47 at the lower end is mounted and supported on the cover 50 by a metal 51. 52 is a cover,
It is attached so as to cover between the steering post 40 and the housing cover 50. The reverser shafts 44, 47 and the like can be moved to the positions indicated by the imaginary lines in FIG. 3 to make the clutch housings of different specifications compatible. 5 to 7, the point different from the above example is that a position sensor 55 for detecting the operation position by the reversing lever 54 is provided above the steering post 40 so that the operation position is displayed or the control is interlocked. The reverser lever 54 is provided below the steering handle 56 and on the left hand side. The base is mounted on the upper end of the reversing shaft 42 in the steering post 40 so as to be vertically swingable by a pin 57. When the base N is rotated forward from the neutral N position, the base becomes the forward F position. The reverser can be switched by rotating the reverser shaft 42 or the like so as to be in the R position. At the upper end of a shaft cylinder 53 rotatably supporting the reverser shaft 42, a fixed plate 59 integral with a shaft cylinder 58 and the like for rotatably supporting the steering shaft 41 is provided. Along the upper surface 59, the cam plate 60 integrated with the reverser shaft 42 can rotate. The rotation of the cam plate 60 allows the position sensor 55 attached to the fixed plate 59 via the bracket 61 to detect a specific position. A clip ball 62 is provided on the fixing plate 59.
Are provided, and a detent mechanism at each position of neutral N, forward F, and reverse R is formed between the plate and the clip hole 63 formed on the lower surface of the cam plate 60. A spring 64 is provided around the reversing shaft 42 and the cam plate 60 and the reversing lever 5.
It is tensioned between the four bases and presses the reverser lever 54 to the lower side of the neutral N position. A guide plate 65 for guiding the reversing lever 54 is attached to the shaft cylinder 58, and the lever 54 is operated along a guide groove 66 of the guide plate 65. The guide groove 66 is formed in a T-shape that is inclined forward and backward, and protrudes downward with an intermediate portion as a neutral N position. The front end is the forward F position, and the rear end is the reverse R position. On the upper surface of the outer peripheral portion of the cam plate 60,
A neutral surface 60N corresponding to a flat neutral N position, a forward surface 60F inclined upward and corresponding to a forward position, and the neutral surface 6F.
Reverse surface 6 corresponding to the reverse R position by recessing downward from 0N
0R and each of these surfaces 60N, 60F, 60R
The position sensor 55 faces the upper surface of the rotation locus of
And the ball 67 is interposed. By rotating the cam plate 60 by the reversing lever 54, the ball 67 is moved up and down, and the three-stage position switch 55 is turned on and off.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view. FIG. 2 is a front view of a part thereof. FIG. 3 is a side view of a clutch housing. FIG. 4 is a plan view of a part thereof. FIG. 5 is a side view of a steering post showing another embodiment. FIG. 6 is a rear view thereof. FIG. 7 is a plan view thereof. [Description of Signs] 1 Transmission case 2 Fender 3 Lever bracket 4 Shift lever 5 Shift lever

Continuation of the front page (56) References JP-A-62-96138 (JP, A) JP-A-57-117911 (JP, U) JP-A-55-129126 (JP, U) (58) Fields investigated (Int) .Cl. ⁷ , DB name) B60K 20/00-20/08 F16H 59/00-61/12 F16H 61/16-61/36 F16H 63/00-63/48

Claims (1)

(57) [Claims 1] A cockpit 10 above the transmission case 1
And a fender 2 that covers a rear wheel on the side of the transmission case 1 and the cockpit 10 is disposed between a side of the transmission case 1 and the outer fender 2. Attach lever bracket 3 to the
-Shift the shift lever back and forth inside and outside the bracket 3.
As well as one side of the lever bracket 3
The shaft 23 for supporting one of the gearshift levers and the gearshift
A lever guide 30 is provided to guide the bar left and right and back and forth.
A gearshift operating device for a powered vehicle.