WO2007077793A1 - トラクタ - Google Patents
トラクタ Download PDFInfo
- Publication number
- WO2007077793A1 WO2007077793A1 PCT/JP2006/325778 JP2006325778W WO2007077793A1 WO 2007077793 A1 WO2007077793 A1 WO 2007077793A1 JP 2006325778 W JP2006325778 W JP 2006325778W WO 2007077793 A1 WO2007077793 A1 WO 2007077793A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- assist grip
- speed
- pedal
- dashboard
- assist
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N3/00—Arrangements or adaptations of other passenger fittings, not otherwise provided for
- B60N3/02—Arrangements or adaptations of other passenger fittings, not otherwise provided for of hand grips or straps
- B60N3/026—Arrangements or adaptations of other passenger fittings, not otherwise provided for of hand grips or straps characterised by the fixing means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K26/00—Arrangements or mounting of propulsion unit control devices in vehicles
- B60K26/02—Arrangements or mounting of propulsion unit control devices in vehicles of initiating means or elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K26/00—Arrangements or mounting of propulsion unit control devices in vehicles
- B60K26/04—Arrangements or mounting of propulsion unit control devices in vehicles of means connecting initiating means or elements to propulsion unit
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N3/00—Arrangements or adaptations of other passenger fittings, not otherwise provided for
- B60N3/02—Arrangements or adaptations of other passenger fittings, not otherwise provided for of hand grips or straps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
- B60P1/00—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading
- B60P1/04—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading with a tipping movement of load-transporting element
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
- B60R21/13—Roll-over protection
- B60R21/131—Protective devices for drivers in case of overturning of tractors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/20—Control lever and linkage systems
- Y10T74/20576—Elements
- Y10T74/20732—Handles
Definitions
- the present invention relates to an assist grip for a work vehicle, and more particularly to an assist grip technique disposed in a steering portion at the rear of a bonnet such as a tractor.
- Patent Document 1 Real Fairness 7-34781
- the assist grip is often held with one hand and the handle is held with the other hand.
- the handle is not fixed, so if you put your body weight on the boarding or apply force, the handle will rotate, causing the body to fall in an unexpected direction or be twisted suddenly. was there.
- an object of the present invention is to provide an assist grip for an operator to easily get on or off the control unit.
- the assist grip is disposed in front of the handle so that the assist grip and the handle overlap in a front view.
- the upper end of the assist grip is configured to be substantially the same as the upper end of the handle.
- the assist grip is configured to be inclined rearward and upward in a side view.
- the assist grip is gradually narrowed toward the left and right center side where the left and right sides of the assist grip are thickened.
- the assist grip is disposed in the left-right direction so as to straddle the upper part of the display panel.
- the assist grip is integrally formed by sticking an elastic member around the core metal, and both ends of the core metal protrude from the elastic member and are provided in the dashboard. It is fixed to the attached member.
- the flange portion is formed at the elastic member end portion of the assist grip.
- the assist grip is arranged in front of the handle, and the assist grip and the handle are overlapped in the front view, so that the front view can be arranged without being obstructed and gets on and off.
- the assist grip instead of grasping an unstable handle, it is possible to grasp an assist grip located in front of the handle, and it is possible to securely get on and off without breaking the posture by grasping the assist grip.
- the upper end of the assist grip is configured to be substantially the same as the upper end of the handle, the handle does not get in the way when getting on and off the control section, and the assist grip can be easily reached. There is no need to worry about losing your work posture.
- the assist grip when configured to be inclined rearward and upward in a side view, the assist grip that is easier to grip than the vertical configuration is more It can be brought closer to the control section side, and the design can be improved.
- the left and right sides of the assist grip are thickened and the center of the left and right sides is gradually narrowed, so that it is possible to increase the rigidity of the gripping parts on both sides, which have good design in appearance. Can be supported with force.
- the assist grip can be disposed without interfering with the display panel by disposing the assist grip in the left-right direction so as to straddle the display panel.
- the assist grip since it can be gripped from both the left and right sides, it is possible to easily get on and off the left and right sides.
- the both sides of the core metal of the assist grip are attached to the mounting members in the dashboard, so that the assist grip is more directly attached to the dashboard. Rigidity can be increased, it can be firmly fixed, and can be supported against larger forces.
- FIG. 1 is a perspective view showing an overall configuration of a tractor according to an embodiment of the present invention.
- FIG. 2 is a right side view of the tractor shown in FIG.
- FIG. 3 is a side view of the assist grip according to the first embodiment.
- FIG. 4 is a front view of the assist grip according to the first embodiment.
- FIG. 5 is a plan view of the assist grip of Example 1.
- FIG. 6 is a perspective view of an assist grip according to a second embodiment.
- FIG. 7 is a perspective view of an assist grip according to a third embodiment.
- FIG. 8 is a front view of an assist grip in Example 3.
- FIG. 9 is a perspective view of the assist grip provided with the rotation mechanism and its periphery shown in Example 4 as viewed from the front upper force.
- FIG. 10 is a perspective view of the assist grip and its surroundings as seen from the front upper side when the cabin specification tractor is used.
- FIG. 11 is a perspective view of an assist grip according to a fifth embodiment.
- FIG. 12 is a front sectional view of an assist grip left side coupling portion of embodiment 5.
- FIG. 13 is a left side view of a tractor equipped with a speed control device.
- FIG. 14 is a perspective view showing the arrangement position of the pedal mechanism constituting the speed control device as seen from the upper rear side.
- FIG. 15 is a model diagram showing the configuration of the pedal mechanism.
- FIG. 16 is a side view showing the entire pedal mechanism.
- FIG. 17 is a perspective view of the entire pedal mechanism as seen from the front upper force.
- FIG. 18 is a perspective view showing the details of part a shown in FIG. 17 as seen from the upper rear side.
- FIG. 19 is a perspective view showing the details of part b shown in FIG. 18 as seen from the rear upper part.
- FIG. 1 is a perspective view showing an overall configuration of a tractor according to an embodiment of the present invention
- FIG. FIG. 2 is a left side view of the tractor shown in FIG. 3 is a side view of the assist grip of the first embodiment
- FIG. 4 is a front view of the same
- FIG. 5 is a plan view of the assist grip
- FIG. 6 is a perspective view of the assist grip of the second embodiment. It is.
- FIG. 7 is a perspective view of the assist grip of the third embodiment
- FIG. 8 is a front view of the same
- FIG. 9 is a front view of the assist grip including the rotation mechanism and its periphery shown in the fourth embodiment.
- FIG. 10 is a perspective view of the assist grip and its surroundings as seen from the front upper side when the cabin-specific tractor is used.
- FIG. 11 is a perspective view of the assist grip according to the fifth embodiment
- FIG. 12 is a front sectional view of the left portion of the assist grip according to the fifth embodiment.
- an engine part 3 is disposed on the upper front side of the engine frame 2, and a control part 4 is disposed on the rear part thereof.
- a front axle case 5 is provided at the front lower part of the engine frame 2 so as to be swingable in the left-right direction.
- a front axle 6 (not shown) pivotally supported by the front axle case 5 is provided at both ends of the front wheel 6. 6 is pivotally supported.
- the rear part of the engine frame 2 is a main body frame 2a, and a mission case 17 (see FIG. 13) is supported by the rear part of the main body frame 2a.
- a rear axle 18 that is fixed to the reactor case is provided.
- Rear wheels 7 and 7 are pivotally supported at both ends of the rear axle 18.
- an engine 8 is mounted on the engine frame 2, and power from the engine 8 is transmitted to the front wheels 6 via a transmission, a drive transmission mechanism, and the like in the transmission case.
- a transmission, a drive transmission mechanism, and the like in the transmission case.
- a radiator 9 battery is accommodated in a bonnet 9 covering the engine 8.
- the control unit 4 is positioned behind the engine unit 3 above the main body frame 2a, and is disposed from the substantially central part of the tractor 1 to the rear.
- a dashboard 10 is disposed at the rear of the bonnet 9, and a fuel tank or the like is stored therein.
- a steering handle 11 is fixed to the upper rear portion of the dashboard 10 at the upper end of the handle shaft.
- the front of the steering needle 11 Is provided with a display panel 12 provided with a revolution meter, a fuel gauge, a warning lamp, and the like.
- the assist grip 31 according to the present invention is provided in front of the display panel 12, that is, at the upper front portion of the dashboard 10. Is fixed.
- a driver's seat 13 is disposed behind the dashboard 10, and assist grips 16 and 16 are disposed on both sides of the driver's seat 13.
- a step 14 is provided at a lower portion between the driver's seat 13 and the dashboard 10, and the steering section 4 is composed of the steering wheel 11, the driver's seat 13, and the like.
- a safety frame 15 is erected at the rear of the driver's seat 13.
- Example 1 of the assist grip 31 according to the present invention will be described with reference to FIGS.
- the assist grip 31 is composed of a single “gate” shape formed of a resin material (the same material as the dashboard 10), and is disposed on the upper surface of the dashboard 10. That is, the lower left and right sides (base) of the assist grip 31 are attached to the front of the steering handle 11, and on the upper side (or upper side) of the dashboard 10 (or the rear of the bonnet) It is fixed so as to be detachable with bolts and screws 32 or the like. Then, it is extended upward (obliquely upward and backward) while tilting gently toward the control unit 4 side from the fixed base. In other words, the assist grip 31 is disposed so as to be inclined upward and rearward on the dashboard 10 in a side view and overlap the steering handle 11 in a front view.
- the inclination of the assist grip 31 is matched with the inclination of the upper cover of the display panel 12 to improve the design without a sense of incongruity.
- the upper portion of the assist grip 31 reaches a position that is substantially the same height as the uppermost end portion of the steering handle 11, and then gradually changes upward from the left and right sides to the center, and is connected seamlessly. It is formed in a substantially U shape when viewed from the front. In other words, the upper end of the assist grip 31 is positioned approximately in front of the upper end of the steering handle 11. Thus, the upper end of the left and right center portion of the assist grip 31 is arranged to be higher than the upper end of the steering handle 11, and the left and right width of the assist grip 31 is set to the left of the steering handle 11.
- the assist grip 31 is disposed in the left-right direction across the upper part of the display panel 12, and as shown in FIG. 4, a predetermined gap is provided between the inside of the assist grip 31 and the outer periphery of the display panel 12 as viewed from the front. A space is formed so that a finger can enter between them to ensure grip.
- the upper portion of the assist grip 31 is formed in an arc shape in plan view, and is substantially concentric with the steering handle 11 to form a predetermined space between the assist grip 31 and the steering handle 11.
- the upper part of the assist grip 31 can be easily grasped by the upper grip so that it does not interfere with the steering wheel operation.
- the sectional shape of the assist grip 31 is a substantially rectangular shape, and is basically configured by a curved line excluding an acute angle portion, but is not limited to this. For reasons such as ease of gripping by the trader, it may be configured in a circular shape, a polygonal shape, or a unique shape. However, with regard to the thickness of the member, the extension portion in the horizontal direction (W1 shown in FIG. 5) as in the present embodiment (W2 shown in FIG. 5) in the horizontal direction in front view. It is more effective to make the screen thinner. In other words, the assist grip 31 is configured such that the left and right sides are thick and gradually narrow toward the center of the left and right. By configuring in this way, it is possible to provide sufficient strength at the upward extending portion, and improve the ease of gripping of the operator at the horizontal extending portion when viewed from the front. Because.
- the material of the assist grip 31 is not limited to the resin material as in the present embodiment, and may be formed using, for example, a metal material.
- the component parts are not limited to the integrated type as in the present embodiment.
- both side portions and the horizontal portion may be configured as separate components to facilitate assembling.
- the assist grip 31 can be secured to the dashboard 10 with the screw 32, etc., so that the assist grip 31 can be easily attached and detached without the need for a special tool. . Further, the assist grip 31 can be configured integrally with the dashboard 10.
- Example 2 of the assist grip 33 according to the present invention will be described with reference to FIG. 6.
- the assist grip 33 according to Example 2 has a “gate-shaped” shape in front view compared to Example 1 described above. It is the same in terms of the configuration. However, there is a difference in the side view. That is, the assist grip 33 according to the second embodiment has a configuration in which the lower part is bifurcated in a side view. Specifically, the front and rear lower ends of the base portion of the assist grip 33 are fixed by screws 32 or the like on the upper surface portions on both the left and right sides of the dashboard 10, and each is extended and connected obliquely upward. In other words, it is configured in a substantially inverted Y shape in side view. Then, it gradually changes from the left and right upper part to the left and right center side, and is connected seamlessly.
- the assist grip 33 can be firmly fixed to the dashboard 10, and the rigidity can be increased.
- the part extending backward and downward and the part extending forward and downward it is possible to choose the one that is easier to hold depending on the physique of the operator. It is also possible to grab the stretched part, so that the operator can get on and off in a posture that is most stable.
- the assist grip 33 can be easily attached and detached without the need for a special tool by fixing the assist grip 33 to the dashboard 10 with the screw 32 or the like. It is.
- the assist grip 34 has a pair of members fixed to both side portions of the dashboard 10. In the following, since the assist grip 34 is configured symmetrically, the assist grip 34 disposed on the left side in the traveling direction will be described.
- the assist grip 34 is formed in a substantially " ⁇ " shape when viewed from the front, and the mounting base portion is formed by screws 32 or the like at the upper and lower portions in front of the side surface portion of the dashboard 10. It is fixed. The left and right outer ends of the assist grip 34 are positioned within the vehicle width.
- the assist grip 34 since the locations of the assist grips 34 are brought to both sides of the dashboard 10, the visibility of the operator at the control section 4 is the same as that of the first and second embodiments. It is far superior to the case. And it can be gripped at the position that is easiest to hold regardless of the length of the work vehicle. Also, when getting off the vehicle, it is possible to get off easily by grasping a portion extending obliquely outward and downward rather than a vertical portion. Further, as in Embodiments 2 and 3 described above, the assist grip 34 is fixed to the dashboard 10 by the screw 32 or the like, so that the assist grip 34 can be easily attached and detached without the need for a dedicated tool. Is possible.
- Embodiment 4 of the assist grip 35 according to the present invention will be described with reference to FIGS.
- the assist grip 35 according to the fourth embodiment is different from the first embodiment in the arrangement of the force dashboard 10 in common with the first embodiment in that it has a “gate-shaped” shape in a front view. That is, the assist grip 35 can be rotated forward with respect to the traveling direction of the tractor 1. Details will be described below.
- a bracket 36 for attaching the assist grip 35 is detachably fixed to the upper surface or upper side surface of the dashboard 10 by screws 32 or the like on both front sides thereof.
- the base portion of the assist grip 35 is pivotally supported by a connecting pin 37 with respect to the bracket 36, and can be rotated forward or backward.
- a stopper is integrally formed at the rear upper part of the bracket 36 so that only the front can be rotated.
- a lock pin 38 is provided on the side surface of the bracket 36 in order to securely hold the assist grip 35 in a standing state.
- the assist grip 35 By providing a rotation mechanism for the assist grip 35 as described above, the assist grip 35 is raised only when necessary, such as when getting on or off the control section 4, and when the tractor 1 is running. On the other hand, it is possible to make a selection according to the usage situation, such as ensuring the visibility by overturning. Further, as in Examples 2 to 4 described above, the assist grip 35, that is, the bracket. By attaching the bracket 36 to the dashboard 10 with the screw 32 or the like, the assist grip 35 can be easily attached and detached while the bracket 36 is attached without the need for a dedicated tool or the like.
- Embodiment 5 of the assist grip 45 according to the present invention will be described with reference to FIGS.
- the assist grip 45 according to the fifth embodiment has a “gate-shaped” shape when viewed from the front, and the shape and appearance are substantially the same as those of the first embodiment. Have. In other words, the assist grip 45 can be attached and detached as a separate body that is not directly attached to the dashboard 10, is attached to the stay 42, which is a fixing member disposed in the dashboard 10, and the holes 10b and 10b opened in the dashboard 10 are provided. More extended on Dashboard 10. Details will be described below.
- a support frame is erected on the rear side of the bonnet 9 above the engine frame 2.
- a radiator bracket 41 is erected, and the rear of the fuselage from the upper part of the radiator bracket 41.
- a stay 42 is fixed as a fixing member.
- holes for inserting a core bar 43 described later are opened.
- the assist grip 45 has a core metal 43 disposed at the axial center thereof, and an elastic member 45b made of urethane foam, rubber or the like is attached to the outer periphery of the core metal 43.
- an elastic member 45b made of urethane foam, rubber or the like is attached to the outer periphery of the core metal 43.
- they are rolled up and integrated into one piece, making it easy to grip and not slip. It is also possible to fix the twist preventing plates 44 and 44 in the middle of the core metal 43 so as to prevent the elastic member 45b from being twisted.
- Both ends of the core metal 43 are protruded from the elastic member 45b, and the tip end portion is formed as a male screw and can be fixed with a nut or the like, and the upper portion thereof is a groove portion that can be locked with a retaining ring or the like. Is formed.
- a collar portion 45a'45a is provided at the end portion of the elastic member 45b that contacts the upper surface of the dashboard 10. so that the outer periphery is larger than the main body portion of the elastic member 45b and is spread downward. .
- the collar portion 45a'45a is formed in a dish shape, and the elasticity of the collar portion 45a'45a when the assist grip 45 is assembled to the dashboard 10 is increased.
- the periphery can be closely attached so as to fill the gap, and the appearance can be improved. Further, since the collar portion 45a'45a can be placed on the dashboard 10 in a wider area than before, it can be stably fixed.
- holes 10b and 10b are opened in two places on the left and right so as to be able to penetrate the core metal 43, and the periphery of the hole 10b '10b is formed so as to rise above the upper surface of the dashboard 10.
- the boss portion 10a '10a is formed, and the collar portions 45a and 45a of the assist grip 45 are placed and received on the upper surface of the boss portion 10a.
- the core bars 43 on both sides of the assist grip 45 are inserted into the holes 10b 10b opened in the boss 10a '10a of the dashboard 10 and the holes of the stay 42 provided in the dashboard 10. Then, by placing the retaining ring 46 on the upper portion of the stage 42 and tightening with the nut 47 and the washer 48 from below the stay 42, the assist grip 45 can be fixed to the dashboard 10. By attaching the assist grip 45 in this way, the rigidity can be further increased as compared with the configuration in which the assist grip 45 is directly attached to the dashboard board 10, and the core metal 43 is inserted into the assist grip 45 and the core is inserted.
- the rigidity can be increased as compared with the case where the assist grip 45 is formed only from a resin material. It is also possible to adopt a configuration in which the assist grip 45 made of a resin material is directly attached to the stay 42 without forming the core metal 43.
- FIG. 10 shows an example.
- the lower part of the front surface 21 of the cabin is located at the upper part of the dashboard 10, and a slightly large notch is formed along the outer shape of the assist grip 35 at the lower left and right centers of the front surface 21.
- a seal 22 having an elastic material force such as rubber is attached along the shape.
- a transparent plate 40 is fixed by a screw 39 or the like so as to cover the space between the inside of the assist grip 35 and the upper surface of the dashboard 10.
- the transparent plate material 40 is configured not to obstruct the rotation mechanism of the assist grip 35, and is a transparent plate so as to close a gap between the upper surface of the dashboard 10.
- a seal 23 is also provided on the lower part of the material 40 or on the upper surface of the dashboard 10 which also has elastic material force.
- the assist grip 35 is provided in common with the open specification that does not require a new design review in the vicinity of the dashboard 10 even in the cabin specification. Can do.
- the assist grip 35 can be used as a small window by tipping forward in the direction of travel, allowing fresh air to be taken in.
- the seals 22 and 23 ensure that the air tightness of the control unit 4 is completely secured and prevent intrusion of wind and rainwater.
- FIG. 13 is a right side view of a tractor equipped with a speed control device.
- FIG. 14 is a perspective view of the pedal mechanism constituting the speed control device
- FIG. 15 is a model diagram showing the configuration of the pedal mechanism
- FIG. 16 is a side view showing the entire pedal mechanism.
- FIG. 17 is a perspective view of the entire pedal mechanism as seen from the front upper part
- FIG. 18 is a perspective view showing the details of part a shown in FIG. 17, the rear part seen from the upper part
- FIG. 19 is part b shown in FIG. It is the perspective view seen from the back upper part which shows the detail of.
- the speed control device shown in FIGS. 13 to 19 has a simple configuration that can solve such a problem, and the set speed can be easily reproduced.
- a shift pedal for performing a shift operation on an arm that rotates a transmission shaft of the continuously variable transmission, and a neutral The clutch pedal to be returned to and the speed setting lever for setting the constant speed traveling speed are connected via a link mechanism, respectively, and the setting speed held by the speed setting lever is set between the arm and the speed setting lever.
- a mechanism that allows the clutch pedal operation within the range and reproduces it is provided.
- the mechanism allowing the clutch pedal operation has a simple configuration using a rod, a stopper, and a panel, so that it can be manufactured at low cost and can be easily attached.
- the speed setting lever is arranged on the side of the driver's seat and can be engaged with the lever guide at an arbitrary position, so that the speed can be easily set while the operator is sitting on the driver's seat. It is possible and the setting can be easily performed.
- a shift pedal (or accelerator pedal) 21 for operating the tractor 1 forward and backward is disposed on the step 14 on the right side of the aircraft.
- a clutch pedal 24 is disposed on the step 14 on the left side of the machine body to temporarily cut off the drive transmission to the traveling drive wheel (front wheel 6 or rear wheel 7).
- a pair of left and right brake pedals 22R'22L (or clutch pedals) for braking the left and right rear wheels 7 and 7 are arranged in parallel at the front position of the shift pedal 21.
- the left pedal 22L is depressed, the left rear wheel 7 is braked, and when the right pedal 22R is depressed, the right rear wheel 7 is braked.
- the brake pedal 22 on the same side is depressed so that it can turn with a small diameter.
- each of the brake pedals 22L and 22R and the clutch pedal 24 is provided with a return mechanism (for example, a brake return spring) that is not shown in the figure and biases the pedals 22L '22R' 24 to the brake release position. Is done.
- Both brake pedals 22L'22R are provided with a coupling mechanism so that both of them can be braked simultaneously on the road.
- the driving force of the engine 8 described above is transmitted to the transmission case 17 via the propeller shaft, universal joint (both not shown), etc., and the rear continuously variable transmission 30.
- the transmission in the transmission case 17 is composed of a gear train and the like for transmitting the power output from the continuously variable transmission 30 to the axles 18 and 18, and a pair of left and right disposed in the rear axle case.
- a differential device (not shown) for differentially coupling the left and right axles 18 and 18 is provided, and a brake device (not shown) is provided on each of the pair of left and right axles 18 and 18.
- the brake pedals 22L and 22R are connected to each other through a rod or the like.
- the hydraulic mechanism provided in the continuously variable transmission 30 includes a variable displacement hydraulic pump, a fixed (or variable) displacement hydraulic motor, and an oil passage plate that fluidly couples both.
- the driving force from the engine 8 is transmitted to the pump shaft of the hydraulic pump, and in order to tilt the movable swash plate for changing the volume of the hydraulic pump, the gear case 17 has a speed change.
- a shaft 80 is pivotally supported and protrudes outward from the case.
- the arm 72 is fixed.
- the arm 72 is linked to the shift pedal 21 and the clutch pedal 24 via a link mechanism disposed below the step 14.
- the tractor of the present embodiment is equipped with an HMT transmission as a continuously variable transmission.
- the continuously variable transmission is not limited and is an HST (hydraulic continuously variable transmission).
- a forward / reverse switching mechanism (not shown) is arranged between the transmission shaft 80 and the movable swash plate or between the arm 72 and the link mechanism.
- FIGS. 14 to 17 the directions of the arrows shown in FIGS. 14 to 17 indicate the forward direction
- the brake pedal 22 and the clutch pedal 24 are shown in FIG. 16
- the brake pedal 22 is shown in FIG. 17, respectively. Omitted for reasons of
- the speed control device 71 includes an arm 72 fixed to the transmission shaft 80 of the continuously variable transmission 30, a transmission pedal (accelerator pedal) 21, a clutch pedal 24, a speed setting lever 74, and the arm 72 and the transmission pedal 21. , A clutch mechanism for connecting the clutch pedal 24 and the speed setting lever 74.
- the continuously variable transmission 30 is arranged in the vicinity of the mission case 17, and in this embodiment, it is also possible to arrange it in the vicinity of the engine 8, etc., which is not limited to the force arranged below the driver's seat 13.
- the transmission shaft (such as a trunnion shaft) 80 is connected to a movable swash plate provided in a hydraulic pump of the HST that is a continuously variable transmission. By rotating the transmission shaft 80, the discharge amount and the discharge direction of the hydraulic pump Is changed to change the rotation speed of the output shaft of the hydraulic motor to infinitely variable speed.
- One end of an arm 72 is fixed to the transmission shaft 80.
- the direction of the arrow a with respect to the rotation direction of the arm 72 is set to the deceleration side (that is, the movable swash plate rotates in the neutral direction, and the discharge amount of the hydraulic pump decreases.
- the direction of arrow b is the speed increasing side (that is, the direction in which the swash plate angle of the movable swash plate increases and the discharge amount of the hydraulic pump increases).
- the shift pedal (accelerator pedal) 21 and the clutch pedal 24 are connected to the steering handle 11. Steps 14 and 14 on the right and left sides that extend between the driver's seat 13 and the brake pedal 22 are arranged on the right side of the right step 14 next to the front left of the shift pedal (accelerator pedal) 21. Yes. Therefore, the clutch pedal 24 is operated with the left foot, the shift (accelerator pedal) 21 and the brake pedal 22 are operated with the right foot, respectively, and it is possible to drive with riding ⁇ sense.
- the footrest plate 21b is fixed to the distal end of the pedal arm 21a of the speed change pedal 21, and the base end portion of the pedal arm 21a is fixed to one end of the pedal shaft 76.
- the pedal shaft 76 is pivotally supported by the fuselage frame 2a.
- An arm 50 is fixed in the middle of the pedal shaft 76, and one end of a spring 86 and a damper 87 is pivotally supported at the tip of the arm 50.
- the other end of the spring 86 and the damper 87 is connected to the body (main body frame). It is locked to the 2a) side.
- the shift pedal 21 is urged by the spring 86 in the neutral direction.
- the damper 8 7 prevents sudden operation. That is, when returning to the neutral direction by the urging force of the spring 86, the urging force is buffered by the damper 86 so that the vehicle cannot be stopped suddenly.
- An arm 51 is fixed to the other end of the pedal shaft 76, and a connecting link 77 is pivotally supported at the tip of the arm 51.
- the other end of the connecting link 77 is pivotally supported in the middle of the arm 72.
- the clutch pedal 24 has a footrest plate 24b fixed to the end of the pedal arm 24a, and is pivotally supported by a pedal shaft 75 at the base of the pedal arm 24a. Further, the pedal arm 24a has an arm portion projecting downward, and is pivotally supported at one end of the connecting link 78 at its tip, and the other end of the connecting link 78 is pivotally supported at the lower end of the arm 72.
- the speed setting lever 74 is arranged in the vicinity of the driver's seat 13, in the present embodiment, on the side, and can be rotated in the front-rear direction along the lever guide 52, and can be engaged and fixed at any position. It is composed.
- the protrusion 74b protrudes from the side surface of the speed setting lever 74 in accordance with the position of the lever guide 52, and a notch 52a '52a' is provided at a predetermined interval in the guide groove of the lever guide 52 so as to face the protrusion 74b.
- the speed setting lever 74 rotates the projection 74b to the state force with the notch 52a disengaged, and rotates the speed setting lever 74 to the side.
- the position can be maintained.
- the mechanism that allows the clutch pedal 24 to rotate includes a spring 81, a stopper 84, and a connecting rod 85, and the lower part of the speed setting lever 74 is pivotally supported by the pivot shaft 83.
- the lower end of the speed setting lever 74 is pivotally supported by one end of the connecting link 53, and the other end of the connecting link 53 is pivotally supported by one end of the connecting arm 54.
- a long hole 53a is formed at the other end of the connecting link 53, and a connecting pin 55 protruding from one end of the connecting arm 54 is inserted and pivotally supported.
- a midway portion of the connecting arm 54 is pivotally supported by a pivot shaft 90, and a spring 81 and an interlocking rod 85 are interposed between the other end of the connecting arm 54 and the arm 72. That is, the spring 81 is locked between the connecting arm 54 and the arm 72 and urges the arm 72 to rotate to the connecting arm 54 side.
- one end of the interlocking rod 85 is pivotally supported by one end of the connecting arm 54, and the other end is slidably inserted into the locking portion of the arm 72. That is, the engagement plate 72a is provided in the middle of the arm 72 by bending or welding or the like, and an insertion hole is opened in the engagement plate 72a, and the interlocking rod 85 is passed through the insertion hole. Yes. Further, a stopper 84 is fixed in the middle of the interlocking rod 85 so as to come into contact with the engagement plate 72a. The stopper 84 may be configured to be screwed to the interlocking rod 85 so that the mounting position can be changed.
- the speed setting lever 74 is rotated to the low speed side (rear).
- the arm 72 is rotated via the pedal shaft 76, the arm 51, and the connecting link 77, and the continuously variable transmission 30 is shifted to the speed increasing side.
- the engagement plate 72a abuts on the stopper 84 and pushes the interlocking rod 85 to rotate the connecting arm 54.
- the connecting pin 55 slides in the long hole 53a, and the speed setting lever 74 does not rotate.
- the speed setting lever 74 is depressed when the speed change pedal 21 is depressed until the desired traveling speed is reached. Is rotated to the high speed side, and the speed setting lever 74 is engaged with the notch 52a at a position where the speed is not further increased, and the speed setting lever 74 is locked and fixed. Even if the depressing of the shift pedal 21 is released in this state, the position is maintained by the biasing force of the spring 81, and the position of the arm 72 is also maintained, and constant speed running is possible.
- the connecting link 78 is provided with a long hole 25 at the connecting portion with the pedal arm 22a. As long as the arm 72 is stopped at the neutral position, even if the clutch pedal 24 is subsequently depressed, both members 22a 'The connecting pin 26 that connects 78 only slides in the long hole 25, and the arm 72 is not rotated to the deceleration side, but the arm 72 is inclined to the acceleration side. In this case, when the clutch pedal 24 is depressed, the side of the long hole 25 is pushed by the connecting pin 26, and the arm 72 is returned to the neutral position via the connecting link 78. Further, when the speed change pedal is further depressed during constant speed traveling, the arm 72 can be rotated to increase the speed.
- the speed setting lever 74 can be operated forward and backward.
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Body Structure For Vehicles (AREA)
- Braking Elements And Transmission Devices (AREA)
Description
Claims
Priority Applications (10)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020077025107A KR101251566B1 (ko) | 2005-12-28 | 2006-12-25 | 트랙터 |
AU2006332048A AU2006332048B2 (en) | 2005-12-28 | 2006-12-25 | Tractor |
CN2006800058364A CN101128341B (zh) | 2005-12-28 | 2006-12-25 | 拖拉机 |
CA2603241A CA2603241C (en) | 2005-12-28 | 2006-12-25 | Tractor |
US11/816,700 US8033590B2 (en) | 2005-12-28 | 2006-12-25 | Tractor |
EP06843181A EP1873009B1 (en) | 2005-12-28 | 2006-12-25 | Tractor with an assist grip |
US11/877,602 US7604277B2 (en) | 2005-12-28 | 2007-10-23 | Working vehicle equipped with assist grip |
US11/877,445 US7549693B2 (en) | 2005-12-28 | 2007-10-23 | Tractor |
US11/877,441 US20080106112A1 (en) | 2005-12-28 | 2007-10-23 | Tractor |
US11/877,449 US7452021B2 (en) | 2005-12-28 | 2007-10-23 | Tractor |
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005-378667 | 2005-12-28 | ||
JP2005378667 | 2005-12-28 | ||
JP2006045397A JP2007224985A (ja) | 2006-02-22 | 2006-02-22 | 速度制御装置 |
JP2006-045397 | 2006-02-22 | ||
JP2006-232729 | 2006-08-29 | ||
JP2006232729A JP4913506B2 (ja) | 2005-12-28 | 2006-08-29 | トラクタのアシストグリップ |
Related Child Applications (5)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/816,700 A-371-Of-International US8033590B2 (en) | 2005-12-28 | 2006-12-25 | Tractor |
US11/877,445 Continuation US7549693B2 (en) | 2005-12-28 | 2007-10-23 | Tractor |
US11/877,449 Continuation US7452021B2 (en) | 2005-12-28 | 2007-10-23 | Tractor |
US11/877,602 Continuation-In-Part US7604277B2 (en) | 2005-12-28 | 2007-10-23 | Working vehicle equipped with assist grip |
US11/877,441 Continuation US20080106112A1 (en) | 2005-12-28 | 2007-10-23 | Tractor |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007077793A1 true WO2007077793A1 (ja) | 2007-07-12 |
Family
ID=38228148
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2006/325778 WO2007077793A1 (ja) | 2005-12-28 | 2006-12-25 | トラクタ |
Country Status (7)
Country | Link |
---|---|
US (3) | US8033590B2 (ja) |
EP (1) | EP1873009B1 (ja) |
KR (1) | KR101251566B1 (ja) |
CN (1) | CN101128341B (ja) |
AU (1) | AU2006332048B2 (ja) |
CA (1) | CA2603241C (ja) |
WO (1) | WO2007077793A1 (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009035186A (ja) * | 2007-08-02 | 2009-02-19 | Yanmar Co Ltd | トラクタ |
JP2009035184A (ja) * | 2007-08-02 | 2009-02-19 | Yanmar Co Ltd | トラクタのアシストグリップ |
JP2009035183A (ja) * | 2007-08-02 | 2009-02-19 | Yanmar Co Ltd | アシストグリップ |
EP4372154A1 (en) * | 2022-11-16 | 2024-05-22 | Ausa Center, S.L.U. | Vehicle for handling materials and earth moving |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006123756A1 (ja) * | 2005-05-20 | 2006-11-23 | Yanmar Co., Ltd. | 走行車両 |
CN103615532B (zh) * | 2013-11-27 | 2015-10-14 | 常州东风农机集团有限公司 | 静液压无级变速器的操纵装置 |
USD748675S1 (en) * | 2014-06-17 | 2016-02-02 | Kubota Corporation | Riding lawn mower |
USD748676S1 (en) * | 2014-06-17 | 2016-02-02 | Kubota Corporation | Riding lawn mower |
JP7022676B2 (ja) * | 2018-03-14 | 2022-02-18 | ヤンマーパワーテクノロジー株式会社 | 作業車両 |
US10829083B2 (en) * | 2018-10-30 | 2020-11-10 | Deere & Company | Pivoting seat belt system |
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- 2006-12-25 EP EP06843181A patent/EP1873009B1/en not_active Not-in-force
- 2006-12-25 CN CN2006800058364A patent/CN101128341B/zh not_active Expired - Fee Related
- 2006-12-25 US US11/816,700 patent/US8033590B2/en not_active Expired - Fee Related
- 2006-12-25 CA CA2603241A patent/CA2603241C/en not_active Expired - Fee Related
- 2006-12-25 WO PCT/JP2006/325778 patent/WO2007077793A1/ja active Application Filing
- 2006-12-25 KR KR1020077025107A patent/KR101251566B1/ko active IP Right Grant
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2007
- 2007-10-23 US US11/877,449 patent/US7452021B2/en active Active
- 2007-10-23 US US11/877,445 patent/US7549693B2/en active Active
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009035186A (ja) * | 2007-08-02 | 2009-02-19 | Yanmar Co Ltd | トラクタ |
JP2009035184A (ja) * | 2007-08-02 | 2009-02-19 | Yanmar Co Ltd | トラクタのアシストグリップ |
JP2009035183A (ja) * | 2007-08-02 | 2009-02-19 | Yanmar Co Ltd | アシストグリップ |
EP4372154A1 (en) * | 2022-11-16 | 2024-05-22 | Ausa Center, S.L.U. | Vehicle for handling materials and earth moving |
Also Published As
Publication number | Publication date |
---|---|
US20090007719A1 (en) | 2009-01-08 |
CA2603241A1 (en) | 2007-07-12 |
KR101251566B1 (ko) | 2013-04-08 |
US20080272610A1 (en) | 2008-11-06 |
CN101128341A (zh) | 2008-02-20 |
EP1873009A1 (en) | 2008-01-02 |
CN101128341B (zh) | 2010-08-25 |
US7452021B2 (en) | 2008-11-18 |
AU2006332048B2 (en) | 2012-03-15 |
AU2006332048A8 (en) | 2008-10-02 |
EP1873009B1 (en) | 2011-10-12 |
US8033590B2 (en) | 2011-10-11 |
US7549693B2 (en) | 2009-06-23 |
CA2603241C (en) | 2014-02-04 |
EP1873009A4 (en) | 2008-10-29 |
AU2006332048A1 (en) | 2007-08-23 |
US20080084081A1 (en) | 2008-04-10 |
KR20080080255A (ko) | 2008-09-03 |
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