JPH10324168A - Operating member of traveling vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform changeover for forward/backward and shifting operation without separating both hands from steering wheel grip, and always hold operability and balance, by providing an input means, and functions of changeover for forward/backward and shifting which can be operated by fingers. SOLUTION: Operating members are arranged in the vicinity of a steering wheel grip 32, and they can be operated fingers under the condition of gripping the steering wheel grip 32. Control members such as a button 34 and a notch 35a are provided on the operating members. When a dial 35 is rotationally moved, longitudinal speed is increased, and when the dial 35 is rotationally moved in the B-direction, the longitudinal speed is decreased. When the button 34 is pushed in the direction of going away from the notch 35a so as to dissolve obstruction of rotational movement of the dial 35, and the dial 35 is further rotationally moved in the B-direction, it is changed to backward. Hereby, changeover for forward/backward and shifting operation can be performed, without separating both hands from the steering wheel grip. Consequently, operability and balance can be always held.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to various traveling vehicles characterized by an operating member, and more
HST).

[0002]

2. Description of the Related Art Conventionally known management machines include the following typical examples. In Japanese Utility Model Publication No. 46-19444, "a walking-type power-movable agricultural machine with a hydraulic motor for driving a driving wheel", a speed change lever is set apart from a handle grip. Therefore, in order to perform a gear shift operation, one hand must be separated from the handle grip and the gear shift lever must be grasped. Therefore, the steering wheel must be operated with one hand,
It is difficult to maintain operability and balance. As a countermeasure against this, Japanese Patent Laid-Open No. 4-266532 "operating device for work vehicle" discloses that a fine speed adjusting member interlocked with a speed control lever is disposed near a handle grip. According to this, the tilt angle of the movable swash plate of the hydraulic pump portion of the HST can be adjusted via the gear group and the cooperation wire by rotating the dial that can be operated with a finger while holding the handle grip. However, this has a complicated structure and is for fine adjustment of speed.
For example, a rough operation such as switching between forward and backward traveling must rely on a speed control lever, not a fine speed adjustment dial. Therefore, when performing a rough shifting operation, one hand must be separated from the handle grip and the other lever must be gripped, as in the previous example. Therefore, steering operation with one hand is inevitable, and it is still difficult to always maintain operability and balance.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art.
An object of the present invention is to provide an operating member of a traveling vehicle in which operability and balance can be constantly maintained by performing forward / reverse switching and shifting operation without releasing both hands from a handle grip.

[0004]

To achieve the above object, an operating member of a traveling vehicle according to the present invention has the following arrangement.
That is, the operating member is provided near the handle grip of the traveling vehicle, and includes an input means that can be operated by a finger, and also has a forward / reverse switching and a speed change function. According to this, since the forward / reverse switching and the shift operation can be finger-operated while holding the handle grip with both hands, the operability and balance of the traveling vehicle are always maintained.

[0005] Here, a regulating member may be provided to make the switching between forward movement and reverse movement discontinuous. Then, at the time of switching between forward and backward, the worker's attention is drawn.
Therefore, the switching operation is ensured, and unintentional unintended running of the operator can be prevented.

[0006] Preferably, the regulating member is disposed near the handle grip. Then, even when operating the regulating member, it is not necessary to separate both hands from the handle grip, and the operability and balance of the traveling vehicle are always maintained.

In the case of a traveling vehicle provided with a forked handle, the operating member may be divided into two parts and arranged separately near both handle grips. Both of them are provided with input means that can be operated by a finger, and one of them has a forward / reverse switching function and the other has a shift function, or one has a forward shift function and the other has a reverse shift function. According to this, the function sharing between the two operation members is clarified, which can contribute to prevention of erroneous operation and improvement of operability.

[0008]

Embodiments of the present invention will be described with reference to the drawings. Here, HS is used as an example of a traveling vehicle.
Although the T management machine is exemplified, the object of the present invention is not limited to this, and the present invention can be applied to general traveling vehicles in which an operation member having a forward / reverse switching and speed change function can be arranged at the handle grip position. Further, the embodiments can be appropriately changed in design without departing from the gist of the present invention.

FIG. 1 is a plan view showing a management device according to the present invention, and FIG. 2 is a side view thereof. First, the outline of the management machine is as follows. A transmission case (24) is integrally connected to the rear of the body frame (11) on which the engine (26) is mounted, and running wheels (21) are provided below the transmission case (24) via an axle (22). ) Is supported.
The power of the engine (26) is transmitted to a traveling transmission unit, a rotary transmission unit, and the like (not shown) in the transmission case (24) via a power transmission case (25). The power transmitted to the traveling mission unit is transmitted to the traveling wheels (21) via a sprocket of an axle (not shown), while the power transmitted to the rotary transmission unit and the like is coupled to the rear of the aircraft via a hitch (12). Is transmitted to various working machines (1) such as a rotary tiller. At the top of the transmission case (24) is a handle base (3
The steering handle (31) is provided so as to be swingable back and forth through the bracket (0), and various operation members are provided.

In such a management machine, the controller box (40) is provided between the forked steering wheel (31).
Is provided, and the operating member of the present invention is provided inside the right handle (31R). The operation member of the present invention controls forward and backward switching and speed change operation of the body by this operation. FIG. 3 is a perspective view showing a main part of the right handle (31R) end. The operating member of the present invention is disposed near the handle grip (32). This is to enable operation with fingers while holding the handle grip (32).

The structure of the operating member is as follows. The support shaft (33) is fixed to the right handle (31R). An annular dial (35) is rotatably loosely fitted to the support shaft (33) as a finger-operable input means. The dial (35) has a notch (35a) around it.
Is provided, and depending on the rotational position, the support shaft (33)
The button (34) attached to the notch (35) is configured to fit into the notch (35a). When the button (34) fits into the notch (35a), the dial (35) is prevented from freely rotating. To unblock this, press the button (3
4) must be pushed away from the notch (35a). Thus, the button (34) and the notch (35a)
The operation member is provided with such a regulating member.

The operation of the management machine is operated as follows by the operating member provided with the regulating member. FIG.
In the position of the dial (35) shown in FIG. When the dial (35) is rotated in the direction of the arrow (A), the forward speed increases, and the dial (3) moves in the direction of the arrow (B).
Rotating 5) decreases the forward speed. Arrow (B)
When the dial (35) is rotated by a predetermined amount in the direction, the forward speed approaches zero, and the forward driving force becomes zero at the position where the button (34) is fitted to the notch (35a). In reality, the inertia often moves forward due to inertia. Button (34)
When the dial is pushed away from the notch (35a) to release the dial (35) from rotation inhibition and the dial (35) is further rotated in the direction of the arrow (B), it is switched to reverse.
As the dial (35) is rotated in the direction of the arrow (B),
Reverse speed increases. Conversely, when the dial (35) is turned in the direction of the arrow (A), the reverse speed decreases, and the reverse driving force becomes zero at the position where the button (34) is fitted to the notch (35a). When the button (34) is removed from the notch (35a) and the dial (35) is rotated in the direction of the arrow (A), the forward speed increases.

As described above, according to the present invention, the forward / backward switching and the speed change operation can be performed by rotating the dial (35) without releasing both hands from the handle grip. Therefore, operability and balance are always maintained. The button (34) and the notch (35)
In a), the switching between forward and backward movement is discontinuous, so that when switching between forward and backward movement, a worker's attention is drawn. Therefore, the switching operation is assured, and unintentional traveling unintended by the operator is prevented.

FIG. 4 is a schematic diagram of the speed change operation system. The HST management machine uses a movable swash plate (5
The traveling speed of the aircraft is adjusted by the inclination angle of 3).
The cooperation between the dial (35) and the swash plate (53) is as follows. The amount of rotation of the dial (35) is measured by a potentiometer (44) attached to the dial and is input to the controller (41). Based on that input value,
The controller (41) outputs the target rotation amount to the transmission motor (51) of the HST mission unit (50). The speed change motor (51) rotates the swash plate (53) via the rod (52). The amount of rotation of the swash plate (53) is measured by a potentiometer (54) attached thereto and fed back to the controller (41). The controller (41) has its power supply (4
2) and the handlebar forward / backward transfer sensor (43) are connected. The handle front-rear transfer sensor (43) is for keeping the dial function constant even when the handle is transferred back and forth.

The amount of rotation of the dial (35) and the swash plate (53)
Is preferably non-linear. In a frequently used speed region, the correspondence between the large rotation amount of the dial (35) and the small rotation amount of the swash plate (53) can contribute to fine speed adjustment in actual work.

As the operating member, the dial (35) is suitable in that it can take a large stroke, but if it is arranged near the handle grip (32) and can be operated by a finger, a type other than the dial type can be used as appropriate. For example, a lever that moves in a substantially spiral curve or in a substantially straight line may be used. Further, the shape of the notch (35a) is suitable for entering and exiting the button (34) as long as the shape of the notch (35a) is wider and smoother gradually near the opening end. However, the configuration of the regulating member is not limited to the notch (35a) and the button (34) of the present embodiment, and any conventionally known one can be used as appropriate.

By the way, a single dial (3
Although the forward / backward switching and the shifting operation are performed in 5), this function may be divided into a plurality of operating members. In the case of a traveling vehicle having a bifurcated handle, the operating member is separated into two parts and arranged separately near both handle grips. Each of them is provided with a finger-operable input means such as a dial (35), and one is provided with a forward / reverse switching function and the other is provided with a speed change function. Alternatively, one may have a forward shift function and the other may have a reverse shift function. According to this, the function allocation of both operation members is clarified,
This can contribute to preventing erroneous operations and improving operability.

[0018]

The operating member of the traveling vehicle according to the present invention has the following effects by having the above-described configuration. According to the operation member of the first aspect, the forward / reverse switching and the shift operation can be finger-operated while holding the handle grip with both hands, so that the operability and balance of the traveling vehicle are always maintained.
Here, when the regulating member according to claims 2 and 3 is provided,
At the time of switching between forward and backward, the worker's attention is called. Therefore, the switching operation is ensured, and unintentional unintended running of the operator can be prevented. Also, when operating the regulating member, it is not necessary to separate both hands from the handle grip, and the operability and balance of the traveling vehicle are always maintained. According to the operation member of the fourth aspect, the function sharing of the plurality of operation members is clarified, which can contribute to prevention of erroneous operation and improvement in operability.

[Brief description of the drawings]

FIG. 1 is a plan view showing a management machine according to the present invention.

FIG. 2 is a side view of the same.

FIG. 3 is a perspective view showing a main part of a right handle end.

FIG. 4 is a schematic diagram of a shift operation system.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Working device 11 Airframe 12 Hitch 21 Running wheel 22 Axle 23 Traveling drive case 24 Transmission case 25 Power transmission case 26 Engine 30 Handle base 31 Operating handle 31L Left handle 31R Right handle 32 Handle grip 33 Support shaft 34 Button 35 Dial 35a Notch 38 Accelerator lever 39 Side clutch lever 40 Controller box 41 Controller 42 Power supply 43 Handle front / rear transfer sensor 44 Potentiometer 49 Rotary clutch lever 50 HST transmission section 51 Transmission motor 52 Rod 53 Swash plate 54 Potentiometer

Claims (4)

[Claims] 1. An operating member disposed near a handle grip of a traveling vehicle, comprising an input means operable with a finger, and having a forward / reverse switching and speed change function. . 2. The operating member for a traveling vehicle according to claim 1, further comprising a regulating member that discontinuously switches between forward movement and reverse movement. 3. The operating member for a traveling vehicle according to claim 2, wherein the regulating member is disposed near the handle grip. 4. An operation member of a two-body separation type separately provided in the vicinity of both handle grips of a traveling vehicle having a forked handle, comprising input means operable with a finger, and one of which is a forward / reverse switching device. An operating member for a traveling vehicle, wherein the operating member has a function and the other has a shift function, or one has a forward shift function and the other has a reverse shift function.