JP2009090701A - Mower - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mower excellent in operability and stability from user's point of view by simultaneously solving both problems in seat position adjustment and difficulties in getting on/off a compact riding mower, since sufficient consideration is not given to driving operability and operation stability of the compact riding mower, an anteroposterior slide position adjustment in a passenger seat can be seen only in part of mowers, and the mower has configuration for disposing an operation lever at sides of the seat, which causes difficulty in getting on/off, in particular for the elderly to get off by straddling the operation lever from a low floor seat. <P>SOLUTION: The passenger seat of the compact riding mower is disposed at a rotation part of a rotation positioning mechanism. The rotation mechanism is disposed at a liner movable part of a reciprocation positioning mechanism. Thus, reciprocation positioning and rotation positioning of the seat can be performed with just one-touch by operations of the operation lever for seat rotation and the operation lever for seat slide. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

The present invention is mainly a small riding type among mowers or similar lawn mowers, and relates to the handling convenience, comfort and the like.

In the past, most of the small-sized passenger mowers have been widely used in the four-wheel rear-wheel drive-front-wheel steering type. (Patent Documents 1 and 2) Various ideas have been made on passenger seats to improve riding comfort and steering stability from the same level of demand as driving a car. Reflecting the special characteristics, there are some that can adjust the seat position to make it easier to work. (Patent Document 3).
Japanese Utility Model 06-55320 JP 2003-320864 A JP2005-1585

  Small riding mowers are used for riding, but are much smaller than other riding agricultural machines. Unlike lawn mowers, which are relatively speedy and can be moved during work, unlike turf mowers, which are blessed with a working environment, they often run on rough terrain, sloping terrain, shrubs, shrubs, etc. In most cases, the floor is small and low. For this reason, workability and work efficiency were ahead and consideration for driving operability and handling stability was delayed. Even in the passenger seat, the front / rear slide position adjustment is only partially observed, and there is little consideration for the operator. This seat position adjustment is quite common with other passenger machines, whereas mowers have little track record. This can be said to be obsolete. However, in recent years, there have also been movable types that are related to operability and stability, and the seat can be slid left and right with respect to the direction of travel so that it can be trimmed to the full side of the trunk of the tree (Patent Literature) 3) Horizontal control sheet. However, these are rather due to improved mowing workability rather than consideration for workers, and are not based on human care such as user friendliness and ease of use.

On the other hand, the mower also has a configuration in which operation levers are arranged at the left and right positions of the seat (FIG. 1). This has overlapped with the low floor position seat and has been a machine that has been difficult to get on and off. In particular, it was very difficult for elderly people to get on and off these control levers from a low-floor seat using their extraordinary leg strength and abdominal strength. He sometimes lost his balance and fell. Of course, improvement in workability and work efficiency is necessary, but before that, it is necessary to solve these problems and make it easy for the user to operate. In particular, in recent years in an aging society, there is an increasing number of cases where an expensive passenger type is refrained from heavy labor using a mower. In order to answer such needs, operability and stability in consideration of human care are required. The present invention simultaneously solves the problem that it is difficult to get on and off in addition to the conventional seat position adjustment of other small riding mowers, and provides a mower with excellent operability and stability for the user. To do.

The means taken in the present invention to solve the above problems is to arrange the riding seat of the small riding mower on the rotating portion of the rotating positioning mechanism, and further arrange the rotating mechanism on the linear movable portion of the reciprocating positioning mechanism. It is set up.

  The present invention has the following effects by applying the above means.

  The front / rear position of the passenger seat can be adjusted with one touch, and it can be adjusted according to the body shape of the person using the maneuvering posture, and it can also be adjusted according to the work environment such as the topography of the harvested field, the field situation, etc. Since it can be adjusted according to the physical condition of the vehicle, driving operability and stability are improved, and usability is improved.

Since the passenger seat can be rotated with one touch at each slide adjustment position, it is possible to get on and off the control levers and to get on and off in the front posture. To do.

Just rotating the seat at the control seat position has almost no effect, and it can be used in combination with the front / rear slide mechanism, select the rotation position, and select the desired position and method of getting on and off, so that you can get on and off easily without the influence of the operation lever A possible structure is now possible. The burden of getting on and off the elderly has been eliminated, and it is now possible to get on and off with work clothes other than pants.

  A first embodiment of the present invention will be described with reference to the accompanying drawings. 1 is a front view, a left side view, and a right side view of an embodiment of the mowing machine of the present invention, FIG. 2 is a plan view thereof, and FIG. 3 is a component configuration diagram showing a seat slide and rotation mechanism. FIG. 4 is a perspective view of the plane and the side showing the assembly configuration. The figures are partially omitted and partly exaggerated for the sake of clarity. The mowing machine can mow the grass by rotating the cutting blade of the mowing unit 1 with the rotational output of the engine unit 2. On the other hand, the vehicle is driven by traveling drive wheels 6 via the transmission 3 separately from the engine output, and the front wheels 5 are steered and operated by operating the steering wheel 4.

  This mower has a very standard configuration, and a lift lever 71 for adjusting the height of the cutting part 1 is provided on the left side of the seat 8, and an HST lever 72 for forward / backward movement and speed adjustment and a high speed / low speed switching lever 73 are provided on the right side. Has been. When getting on and off the aircraft, these levers affect both the left and right sides of the aircraft. This is a significant obstacle especially for the elderly. Originally, getting on and off the seat in a horizontal direction from the lateral direction itself was an unnatural movement for a person, but an obstacle called a lever was added to make the getting on and off very difficult. Because of the low floor, it was possible to get on and off somehow. On the other hand, this problem is completely changed by rotating the seat to the side of the machine body (FIG. 2).

The slide and rotation mechanism of the seat 8 according to the present invention will be described with reference to FIGS. The configuration is roughly divided into five blocks: a sheet main body 81, a rotation base 82, a resin plate 83, a rail unit 84, and a roller base 85. The seat body 81 is bolted to the four corners of the rotating plate 821 of the rotating base 82. (Not shown) A support shaft 822 is fixed substantially vertically at the center of the rotating plate 821 and can be rotated to a rotating plate bearing 843 of the rail unit 84 with a resin plate 83 as a lubricant interposed therebetween. Is pivotally supported. A notch plate 841 is fixed to the tip end of the bearing 843, and notches are formed at a total of seven locations in the center 1 on the left and right sides 3 on the substantially semicircular tip surface in the airframe traveling direction. On the other hand, a latch 824 is fixed to the center of the sheet rotation lever 823 on the rotation base 82 and rotates in conjunction with the rotation operation of the sheet rotation lever 823 pivotally supported on the rotation plate 821. To do.
With the latch 824 and the notch plate 841, the rotation base 82 constitutes a rotation positioning mechanism in the left and right direction with respect to the rail unit 84 with respect to the machine body traveling direction. Usually, the latch 824 is locked to the notch of the notch plate 841 by a latch spring 825. If the sheet rotating lever 823 is rotated forward and the latch 824 is unlocked, the sheet is free to rotate, and can be fixed at that position by returning the lever 8 at each position of the notch.

  In the rail unit 84, two rails 842-842 on the left and right in the aircraft traveling direction are firmly fixed to the bottom plate and the central rib 844 with parallel accuracy. A rotating plate bearing 843 is also firmly fixed to the rib 844. A washer & screw 826 is fixed from the lower side of the bearing 843 to prevent the support shaft 822 from coming off. The rails 842-842 are further slidably inserted into rail guides 851 and 852 fixed to the inner side of the lower roller base 85 frame in contact with the peripheral surface of the roller 853 on the inner side of the guide. It is supported movably. A claw rack 854 is formed on the lower side of one rail 851, and this and a claw formed on a seat slide lever 845 mounted on the rail unit 84 side reciprocate the rail unit 84 with respect to the roller base 85. It constitutes a positioning mechanism. The lever 845 is rotatably supported by a bearing 846 formed on the rail unit 84, and the claw portion at the tip is normally locked to the claw rack 854 by a lever spring 847. If the lever 845 is rotated in the direction in which the claw is engaged and released, the rail unit 84 is slid and the lever 854 is returned at each position of the claw rack 854, the position can be fixed.

  With the above configuration, the sheet main body 81 constitutes a rotation positioning mechanism for the rail unit 84, and the unit 84 constitutes a reciprocating positioning mechanism for the roller base 85, and the sheet rotation lever 823 and the sheet slide lever 845 The reciprocating positioning and rotational positioning of the sheet 8 can be performed by operation. The point of the present invention resides in the rail unit 84. Since the slide movable portion (rail 842) and the rotation support portion (the rotation plate bearing 843 and the notch plate 841) are integrally designed, the configuration is simple and the height can be kept low, and the low seat height can be maintained. done. If the rotational positioning mechanism is simply stacked on the reciprocating positioning mechanism, the seat height is increased and the position becomes unstable.

  The welfare vehicles and the like that make it easy to get on and off by turning the seat 8 are seen in welfare vehicles, but in the case of this mower, the operation levers on the side of the seat become an obstacle, and just turning on the spot is almost effective There is no. This is also true for other agricultural machines. Therefore, paying attention again to the adjustment of the seat position, which was low in the conventional needs, it was used in combination with this reciprocating positioning mechanism, and the slide position was set from the viewpoint of the easy position to get on and off. As a result, the amount of slide was more than the required width for seat position adjustment. However, by sliding the seat to a position where it is easy to get on and off and then turning it sideways, it is possible to avoid the operation lever and get on and off with the front movement instead of the flat movement. As a result, it has become possible to dramatically improve boarding / exiting performance.

  With this configuration, it is now possible to get on and off the seat at a position where it is easy to get on and off with the front movement instead of the horizontal movement. One-touch operation according to the human body shape and preferences. This resulted in re-lighting another sheet position adjustment function. Conventional seat position adjustment is limited to the purchase user, so once adjusted, there is almost no need for subsequent tampering. It was only about fixed seat position adjustment. In recent years, with the aging of society, the view of mowers has changed as described above, but there has been no design mind that is equipped with a one-touch positioning mechanism just for that purpose. In developing the mechanism that is easy to get on and off this time, when the necessity of moving the slide was examined, this came up and the seat position adjustment function was also provided. This is the development of a multi-functional mechanism. A mechanism that seems to be luxurious with a single function is sufficiently effective if it can be applied to multiple functions. And attractive. Originally, this development was intended to be easy to use and excellent in operability based on human care. It is better to have a seat position adjustment function. However, it has not been widely used for the above reasons, and operability and stability have remained difficult. It can be said that the present invention also realizes practical application in terms of cost merit by adding a great added value of a boarding / alighting mechanism to the sheet positioning mechanism.

  FIG. 5 shows the operating state of the seat mechanism according to the present invention. The upper middle diagram shows the seat slide range, and the lower diagram shows the case where the seat is rotated 90 degrees to the left for getting on and off at the position of the middle slide diagram. The direction of turning for getting on and off is free on either the left or right side depending on the stopping condition of the fuselage, the driver's habit and preference. In the figure, the slide is rotated 90 degrees at the full forward position of the slide, but in the case of a large person, the steering handle may get in the way. In that case, it is not necessary to rotate 90 degrees after the front slide moderately, and a sufficient access space for getting on and off can be secured at about 40 degrees. (Lower drawing in FIG. 2) The seat rotation fixing position is set after sufficiently verifying the ease of getting on and off. Of course, since operation in the seat rotation position state is dangerous, a safety device is also provided so that operation in the rotation position is not possible. It is equipped with new functions that are easy to use and easy to use based on human care, and safety considerations are fully taken into consideration so that no new danger mode occurs.

In the embodiment, a latch or a claw mechanism is used for fixing the position of the seat, but a brake mechanism may be used separately. There are merits that can be set steplessly, but there are also disadvantages such as complicated structure, easy fixation and easy displacement due to impact during mowing. The present invention adopts a method that can firmly and securely fix the position for a mower having a severe working environment such as vibration and impact. In addition, the rotation and sliding of the seats are all done manually, but can be electrified using a motor or an electric cylinder.
However, the product nature of mowers is still too early.

  It can be used for all types of small and medium-sized riding work machines such as lawnmowers, small and medium-sized agricultural machines, and civil engineering machines.

It is the front view, left view, and right view which show the 1st Example mowing machine. It is a top view which shows this 1st Example mowing machine. It is an assembly block diagram which shows the detail of the sheet | seat mechanism of this 1st Example mowing machine. It is the perspective view of the side and plane which shows the sheet | seat mechanism of this 1st Example mowing machine. The seat arrangement of the first embodiment mower is not shown.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Mowing part 2 Engine part 3 Drive transmission 4 Steering 5 Front wheel 6 Drive rear wheel 7 Operation lever 8 Seat mechanism 71 Lifting lever 72 HST lever 73 High / low speed switching lever 81 Seat body 82 Rotating base 83 Resin plate 84 Rail unit 85 Roller base

Claims (2)

  A small engine equipped with an engine or motor and equipped with a pair of left and right front and rear wheels, and a cutting part, a passenger seat, and a steering and steering mechanism between the front and rear wheels so that it can be operated as if driving a car. In a riding mower, a seat positioning mechanism for a small riding mower characterized in that the seat is disposed in a rotating portion of a rotating positioning mechanism, and the mechanism is disposed in a linear movable portion of a reciprocating positioning mechanism.   The rotational positioning mechanism is configured by a substantially disc having a notch, a claw groove, or a tooth groove, and a latch, a claw, or a tooth, and the reciprocating positioning mechanism is a notch rack, a claw rack, or a rack. The seat positioning mechanism of the small riding mower according to claim 1, wherein the seat positioning mechanism is configured by a latch, a claw, or a tooth.