JP4478076B2 - Tractor armrest structure - Google Patents

Description

  The present invention relates to a structure of an armrest disposed on an upper portion of a tractor along a fender.

2. Description of the Related Art Conventionally, a working machine as a vehicle, that is, a working vehicle, is provided with an armrest device on which both arms can be placed at both ends of a driver's seat, that is, a pilot seat, in order to reduce the driver's or pilot's fatigue. Many. However, a tractor or the like usually has a configuration in which many operation levers are provided between a control seat and left and right fenders. In such a configuration, when working with the operation lever, in the configuration in which the armrest device is provided at both ends of the above-described control seat, the operator cannot settle the elbow and cannot operate easily. On the other hand, conventionally, in a tractor or the like, a handle is provided on the upper fenders on both the left and right sides so that the operator can use it as a support when getting on and off the tractor. For example, in Patent Document 1, the name “handle for getting on and off” is described . On the other hand, Patent Document 2 describes a handle formed on the loop upward at a position higher than the control lever under the name “fixed handle”. Furthermore, in recent years, it has been pointed out that the idea of “universal design” that is easy for everyone to use is necessary for work machines. Universal design is a concept design that is easy to use for women, elderly people, new farmers, or any other person.
JP-A-5-39062 JP 2004-175160 A

  Here, with respect to the tractor as well, an improvement from the viewpoint of the universal design that the work is easy and easy to operate while enhancing the performance is further desired. SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an armrest that can be easily operated even when working with an operation lever with respect to an armrest of a tractor and can also serve as a handle for supporting conventional boarding and unloading.

  The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.

In the fender (2) covering the rear wheel of the tractor (100), the armrest (23) is provided along the upper surface from the rear upper surface of the fender (2) to the front and rear midway at the left and right sides of the control seat (3). And a lower part on both sides of a safety frame (13) configured substantially in a rear view on a rear upper surface of the fender (2). The safety frame (13) The rear end of the armrest (23) in the front-rear direction extends to the vicinity of the rear end position of the fender (2), and is positioned on the outer side of the safety frame (13). The armrest (23) can be gripped from the front-rear direction of the middle part to the front part with a width narrower than the width of the palm, inclined forward and downward, and a space below the front part of the armrest (23) of the part. The formed gripping part (23b The upper surface of the rear part of the armrest (23) than the grip part (23b) is formed into a wide part (23a), which is a wide horizontal surface, and the lateral part of the control seat (3) is formed in the wide part (23a). Only the upper part located at the upper part is a mounting part (23c) for placing an elbow, and is made of a cushioning elastic material, and the lower part of the rear end is tapered in the wide part (23a) of the armrest (23). Cut out into a concave shape, the top and bottom width is made thin like a plate, the mounting space for the direction indicator (24) is formed below, and the direction indicator (24) is attached to the rear upper surface of the armrest (23) An attachment portion is formed .

  As effects of the present invention, the following effects can be obtained.

According to claim 1, in the fender (2) covering the rear wheel of the tractor (100), the fender (2) is located along the upper surface from the upper surface of the rear portion of the fender (2) to the front and rear halfway at the left and right positions of the control seat (3). The safety frame (13) is provided with an armrest (23), and a lower part on both sides of a safety frame (13) configured in a rear-view substantially gate shape is erected on the upper surface of the rear part of the fender (2). The rear end of the armrest (23) is extended to the vicinity of the rear end position of the fender (2) so as to be tilted rearward by the rotation fulcrum of the outer side of the safety frame (13). The armrest (23) is positioned at the front and the front to the front of the armrest (23) so that it can be gripped narrower than the width of the palm. Form a space below the front In addition, the gripping portion (23b) is configured such that the upper surface of the rear portion of the armrest (23) than the gripping portion (23b) is a wide portion (23a) that is a wide horizontal surface, and the steering portion is Only the upper part located on the side of the seat (3) is a mounting part (23c) on which the elbow is placed, and is made of a cushioning elastic material. In the wide part (23a) of the armrest (23), The lower part of the end is cut into a concave shape in a tapered shape, the vertical width is made thin in a plate shape, the mounting space for the direction indicator (24) is formed below, and the direction indicator on the rear upper surface of the armrest (23) Since the attachment portion for attaching (24) is formed , the middle portion of the armrest is a wide portion and becomes a horizontal surface, so that the operator can easily operate while resting the elbow even when working with the operation lever.

  Moreover, since the front part of the armrest is used as a gripping part, the armrest is provided with a handle which is a support for getting on and off, so that the number of parts of the work vehicle can be reduced.

Moreover, a direction indicator can be erected on the outer side of the base of the safety frame 13 at the rear part of the armrest, and the direction indicator from the front-rear direction or the side can be easily confirmed. That is, the member for setting the direction indicator at the upper part can be reduced.

  Next, embodiments of the invention will be described.

  FIG. 1 is a side view showing an overall configuration of a tractor according to an embodiment of the present invention.

  FIG. 2 is a plan view of the armrest according to the embodiment of the present invention. FIG. 3 is a side view of the same. In the figure, the direction of the arrow is the traveling direction.

  The overall configuration of the tractor 100 according to the embodiment of the present invention will be described with reference to FIG. The tractor 100 supports the power from the engine housed in the front bonnet 12 by supporting the front wheel 10 that can be steered to the engine frame by the steering handle 9 and supporting the rear wheel 1 to the rear part of the fuselage. The gears are shifted by a transmission device housed in the case and transmitted to the rear wheels 1 and the front wheels 10 to enable four-wheel travel. Fenders 2 and 2 are provided from the upper part of the left and right rear wheels 1 and 1 to the front, and the control seat 3 is disposed between the left and right fenders 2L and 2R. A floor panel 11 is provided below between the two. The steering handle 9, the control seat 3, and operation levers disposed on both sides of the control seat 3 are used as a control unit. Here, reference numeral 13 denotes a safety frame, which is configured in a rear-view substantially gate shape, with both side lower portions standing on the upper surface of the rear portion of the fenders 2L and 2R, and a pivotal fulcrum provided on both side lower portions of the safety frame 13 It can be tilted to Reference numeral 14 denotes a lower link which is lifted and lowered by a lift arm at the rear of the vehicle body, which constitutes a part of a three-point link mechanism, and various work vehicles can be mounted on the rear.

<Around the control seat>
The structure of the control part of the tractor 100 which concerns on embodiment of this invention is demonstrated using FIG. Various operation levers, operation buttons, and the like are disposed on the fender 2, and are disposed on both left and right sides of the control seat 3, and a left lever guide 4L is disposed on the left fender 2L disposed on the left hand side of the operator. The right lever guide 4R is provided on the right fender 2R corresponding to the right hand side. Further, as the operation lever, an accelerator lever, a forward / reverse switching lever, a work implement raising / lowering lever, and the like are disposed in the vicinity of the steering handle 9, and in the vicinity of the control seat 3, an auxiliary transmission lever 30, a PTO lever 31, a work implement vertical height. A lever 32, a main transmission lever 33, and the like are provided. The auxiliary transmission lever 30, the PTO lever 31, and the like are arranged on a lever guide 4L provided on the left fender 2L, and the work implement vertical height lever 32, the main transmission lever 33, and the like are provided on the right fender 2R. Arranged at 4R. However, the positions of the operation levers are not limited. For example, when the main transmission is a hydraulic continuously variable transmission (HST), it is arranged on the right side as shown in FIG. In the case of the sliding selection type, instead of the left cup holder 22, a main transmission lever is disposed at that position.

  Further, the lever guide 4R is provided with a tilling depth adjustment dial 25, a work implement inclination control box 26, and an inclination manual operation switch 27. The plowing depth adjustment dial 25 can adjust the desired plowing depth at the time of plowing work, and the work implement inclination control box 26 can set the inclination of the work implement in the plowing work on the sloping ground or can be raised when the work implement is raised. A dial or the like for setting the height is arranged. In addition, armrests 23 and 23 are provided on both outer sides of the lever guides 4L and 4R. The armrest 23 according to the embodiment of the present invention will be described later in detail. In addition, cup holders 22 and 22 are arranged in the empty space of the lever guides 4L and 4R, for example, the front part of the left lever guide 4L and the rear part of the right lever guide 4R so that drinks can be placed during work. ing.

<Armrest>
The structure of the armrest 23 according to the embodiment of the present invention will be described with reference to FIGS. 2 and 3. The armrests 23, 23 are disposed on the left and right fenders 2L, 2R of the tractor 100. Moreover, the position of the left-right direction is arrange | positioned on the both outer sides of the said lever guide 4L * 4R. That is, the armrests 23 and 23 extend in the front-rear direction on the outermost side and are disposed along the outer surface of the fenders 2L and 2R. The rear ends of the armrests 23 and 23 are extended to the vicinity of the rear end positions of the fenders 2L and 2R, and are positioned on the sides of the safety frames 13 and 13, respectively. Then, the front ends of the armrests 23 and 23 are extended along the fenders 2L and 2R so as to extend to substantially the same positions as the front positions of the control seat 3 and the lever guides 4L and 4R.

  Here, in a side view, the shape of the upper surface of the fender 2 immediately below the armrest 23 is substantially arc-shaped and is inclined so as to be lowered toward the front, but the armrest 23 is not obeyed in the front-rear direction. The horizontal height is the same from the rear end to the middle part, that is, from the rear part of the fender 2 to the vicinity of the front and rear center of the control seat 3, and from there, the front is inclined downward to the substantially front end of the control seat 3 and the lever guide 4. The front end of the fender 2 is made to be continuous in accordance with the rising inclination of the rear end obliquely upward.

  Further, the armrest 23 is provided with an opening on the lower surface at the front portion from the position where the left and right fenders 2L and 2R start to be inclined forward and downward so as to be a handle. In the plan view shown in FIG. 2, the armrest 23 is a wide portion 23a having a left and right width enough to allow the arm to be placed from the rear to the central portion having the same horizontal height, and the front portion having the above-described inclination. Is a gripping portion 23b that is gradually narrowed from the wide portion 23a and is narrower than the palm width as a narrow portion. However, the rear portion of the wide portion 23a is gradually narrowed to be wider than the front portion, thereby improving the design. Furthermore, only the upper part (mounting part 23c) located on the side of the control seat 3 in the part which is the wide part 23a is made of an elastic material different from the armrest. That is, an elastic material having a cushion that does not hurt when the elbow is placed, for example, the armrest 23 may be made of resin, and the placement portion 23c may be made of rubber.

  Usually, the armrest is generally located on both sides of the control seat. However, in the tractor 100 as in this embodiment, control levers and the like are arranged on both side surfaces of the control seat 3. In such a case, if the armrest is on both sides of the control seat, the operation of the control lever and the like will be obstructed and the operability will be reduced. Further, in general, in the tractor 100 with many operations such as the control lever, the elbow cannot be rested while the operation lever is operated. Since the armrest 23 is arranged outside the lever guides 4L and 4R on both sides of the control seat 3 as in the embodiment of the present invention, the operator can operate the elbow even in the operation of the work vehicle that often operates the operation lever. The armrests 23 and 23 can be rested, and the palm can be operated in an easy posture by bringing the palms upward to the lever guides 4L and 4R. Further, here, in the armrest 23, the wide portion 23a is formed from the rear to the center, the portion where the elbow is placed in a more natural posture than the control seat 3, and the elastic material is provided on the upper portion thereof as the placement portion 23c. It is easy to apply.

  Usually, in the tractor 100 according to the embodiment of the present invention, the control seat 3 is at a position higher than the ground, and when getting on and off, it is necessary to step on the step 3 and climb to the floor panel 11. In this case, many tractors 100 provided with handles for supporting getting on and off have been seen. Therefore, in the embodiment of the present invention, as in the case of the armrest 23, the gripping portion 23b is provided at the front, thereby providing a conventional handle role. That is, the operator gets on and off while holding the grip portion 23b when getting on and off. Here, by sharing the armrest and the handle, the number of parts can be reduced, and the manufacturing cost and the number of manufacturing steps can be reduced.

  Usually, in the traveling vehicle such as the tractor 100 according to the embodiment of the present invention, a direction indicator is installed to inform the other traveling vehicles, pedestrians and the like of the turning direction. Here, it is desirable that the direction indicator is in a position that is easier to see than the front-rear direction and the outer side. This means that a directional indicator is installed at a higher position in the tractor 100 in a tractor that often pulls a work vehicle.

  Therefore, in the embodiment of the present invention, the attaching portions of the direction indicators 24 and 24 are installed at the upper positions of both rear ends of the armrests 23 and 23, respectively. In other words, as shown in FIG. 3, the rear portion of the armrest 23 is tapered at the rear end of the wide portion 23a formed in a horizontal shape so that the lower portion thereof is tapered and recessed, and the vertical width of the rear end is reduced to a plate shape. Thus, the mounting portion of the direction indicator 24 is used. Accordingly, a mounting space is formed below the mounting portion of the direction indicator 24 so that a bolt portion protruding downward from the direction indicator 24 can be fixed by a nut or the like from the rear or side. Moreover, since the recessed part is made into circular arc shape by side view, the design property is also improved. In this way, the direction indicators 24 and 24 can be installed at a higher position than directly attached to the upper surfaces of the left and right fenders 2L and 2R, thereby facilitating visual recognition from the front and rear sides. This is because, for example, in the left and right fenders 2L and 2R, the direction indicator 24 can be positioned higher than the upper ends of the armrest, lever, etc., and without being disturbed by the armrest, lever, etc. The direction indicators 24 and 24 are mounted at a high position, and there is no need to provide mounting members such as stays. The number of parts can be reduced, and the mounting member and armrest are integrated so that the appearance can be improved. In addition, since it can be easily attached and detached from the rear or side, the maintainability can be improved.

The above is an embodiment according to the present invention.
In this embodiment, the armrest 23 can be used for women, elderly people, new farmers, that is, any human beings such as “operating the operation lever while resting the elbow” and “helping the pilot when getting on and off”. Improvements can be made from the viewpoint of universal design with a focus on concept design that is easy to make, while sharing of parts can be implemented from the viewpoint of reducing parts.

The side view which showed the whole structure of the tractor which concerns on embodiment of this invention. The top view of the armrest which concerns on embodiment of this invention. Similarly side view.

2 Fender 4 Lever guide 23 Armrest
24 direction indicator 100 tractor

Claims (1)

In the fender (2) covering the rear wheel of the tractor (100), the armrest (23) is provided along the upper surface from the rear upper surface of the fender (2) to the front and rear midway at the left and right sides of the control seat (3). And a lower part on both sides of a safety frame (13) configured substantially in a rear view on a rear upper surface of the fender (2). The safety frame (13) The rear end of the armrest (23) in the front-rear direction extends to the vicinity of the rear end position of the fender (2), and is positioned on the outer side of the safety frame (13). The armrest (23) can be gripped from the front-rear direction of the middle part to the front part with a width narrower than the width of the palm, inclined forward and downward, and a space below the front part of the armrest (23) of the part. The formed gripping part (23b The upper surface of the rear part of the armrest (23) than the grip part (23b) is formed into a wide part (23a), which is a wide horizontal surface, and the lateral part of the control seat (3) is formed in the wide part (23a). Only the upper part located at the upper part is a mounting part (23c) for placing an elbow, and is made of a cushioning elastic material, and the lower part of the rear end is tapered in the wide part (23a) of the armrest (23). Cut out into a concave shape, the top and bottom width is made thin like a plate, the mounting space for the direction indicator (24) is formed below, and the direction indicator (24) is attached to the rear upper surface of the armrest (23) A tractor armrest structure characterized in that a mounting portion is formed.

Images