JPH06200979A - Vibration absorbing device for handle of working machine - Google Patents

Abstract

PURPOSE:To provide a vibration absorbing device for the handle of working machine by which engine vibration is not transmitted to the hand of an operator. CONSTITUTION:Journaling shaft bodies 2.3 are mounted in front and rear of a fitting frame provided on the machine body (a) side, a vibration absorbing body 4 such as rubber is fittedly arranged on the journaling shaft bodies 2.3, a handle fitting device (b) is provided on a fitting plate 7 continued to a fitting cylinder 4' fitted to the vibration absorbing body and a handle 8 is projectingly provided on the handle fitting device (b) so as to constitute the vibration absorbing device of the handle in a working machine.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vibration absorbing device for a handle in a working machine such as a mower.

[0002]

2. Description of the Related Art In a working machine having a hand-held handle projecting, for example, a traveling machine with an engine such as a mowing machine, engine vibration is transmitted to a worker's hand through the handle, and a long time work is required. If you continue, you have the drawback that your hands will become numb.

Various anti-vibration mechanisms have been devised in order to reduce the vibration of the handle as much as possible, but the present invention focuses on disposing anti-vibration rubber on the handle mounting portion, and the vibration is almost transmitted to the hand. We have developed a vibration absorption device for the handle of a non-working machine.

[0004]

The gist of the present invention will be described with reference to the accompanying drawings.

Bearing shafts 2 and 3 are installed in front of and behind a mounting frame 1 attached to the machine body a side, and a vibration absorber 4 such as rubber is fitted and arranged on the bearing shafts 2 and 3, and the vibration is generated. Vibration of a handle in a working machine characterized in that a handle attachment device b is provided on an attachment plate 7 connected to an attachment cylinder 4'which is fitted to the absorber 4 and a handle 8 is provided on the handle attachment device b. It relates to an absorption device.

A support shaft 2 is attached to a mounting frame 1 attached to the side of the machine body a.
And the vibration absorber 4 such as rubber is attached to the bearing shaft 2.
Is fitted and disposed, and a vertical support shaft 9 is erected on a mounting plate 7 connected to a mounting cylinder 4 ′ fitted to the vibration absorber 4, and the vertical support shaft 9 is made of rubber-like material. The vibration absorber 10 is fitted and disposed, the handle attachment device b is provided on the upper attachment plate 11 attached to the vibration absorber 10, and the handle 8 is projectingly provided on the handle attachment device b. The present invention relates to a vibration absorbing device for a handle of a work machine.

[0007]

[Function] The engine vibration is generated by the vibration absorbers 4, 5, and 6 attached to the support shafts 2 and 3 installed in front of and behind the mounting frame 1 (two on the left and right on one side, and one in the middle of the other side). Although each of them may be two pieces of one piece or four pieces of two pieces, respectively, the mounting cylinders 4 ', 5', 6 '(also two pieces or four pieces as described above may be used. Since the handle attachment device b is provided on the attachment plate 7 continuously provided via the handle 8 and the handle 8 is projected on the handle attachment device b, the vibration transmitted to the handle 8 is extremely small.

Further, engine vibration is primarily absorbed by a vibration absorber 4 attached to a bearing shaft body 2 mounted on a mounting frame 1,
The secondary absorption is further absorbed by the vibration absorber 10 provided with the vertical support shaft 9 standing on the mounting plate 7 connected through the mounting cylinder 4 ', and the upper mounting plate 11 attached to the vibration absorber 10 is further absorbed. Since the handle attachment device b is provided on the handlebar 8 and the handle 8 is provided on the handle attachment device b, the vibration transmitted to the handle 8 is further reduced.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention shows two examples of preferred embodiments. FIGS. 1 and 2 show a first embodiment, and FIGS. 3 and 4 show a second embodiment.

The first embodiment will be described.

Two bearing shafts 2 and 3 are installed in front of and behind a channel type mounting frame 1 attached to the side of the machine body a, and a cylindrical vibration absorber 4 such as rubber is mounted on the bearing shafts 2 and 3.・ 5
Two mounting cylinders 4 ', 5'on the left and right sides of the bearing shaft body 2 and one in the middle of the bearing shaft body 3 are fitted to the vibration absorbers 4, 5, 6 respectively. -A mounting plate 7 is welded to 6 ', a handle mounting device b is provided on this mounting plate 7, and a handle 8 is projectingly provided on this handle mounting device b.

The vibration of the engine is generated by the vibration absorbers 4, 5, 6 attached to the support shafts 2, 3 which are installed in front of and behind the mounting frame 1.
(A case where two are arranged on one side and one is arranged on the other side is shown in the figure, but two pieces of one piece each or four pieces of two pieces each may be provided.) Absorbed and applied to the vibration absorbers 4, 5, 6 The mounting plate 7 is welded and connected in series through the fitted mounting cylinders 4 ′, 5 ′, 6 ′ (also two or four as described above), and the handle mounting device b is attached to the mounting plate 7. Since the handle 8 is projected through the handle 8, the vibration transmitted to the handle 8 is extremely small.

A second embodiment will be described.

A supporting shaft body 2 is attached to a mounting frame 1 attached to the side of the machine body a.
And the vibration absorber 4 such as rubber is attached to the bearing shaft 2.
Is fitted and disposed, and a vertical support shaft 9 is erected on a mounting plate 7 connected to a mounting cylinder 4 ′ fitted to the vibration absorber 4, and the vertical support shaft 9 is made of rubber-like material. The vibration absorber 10 is fitted and disposed, the handle attachment device b is provided on the upper attachment plate 11 attached to the vibration absorber 10, and the handle 8 is projectingly provided on the handle attachment device b.

Further, the engine vibration is primarily absorbed by the vibration absorber 4 attached to the support shaft 2 mounted on the mounting frame 1,
The upper mounting plate 11 attached to the vibration absorber 10 is further secondary-absorbed by the vibration absorber 10 provided with the vertical support shaft 9 standing on the mounting plate 7 connected through the mounting cylinder 4 '. Since the handle attachment device b is provided on the handlebar 8 and the handle 8 is provided on the handle attachment device b, the vibration transmitted to the handle 8 is further reduced.

The illustrated handle mounting device b is a mounting plate 7 or an upper mounting plate having engaging chrysanthemums 12 and 13 formed on opposite sides.
Consisting of a lower joint 14 and an upper joint 15 welded to 11,
The lower joint 14 and the upper joint 15 are variably connected to each other by the joint bolts 17 against the internally mounted spring 16 so that the protruding direction of the handle 8 can be changed, and the handle can be attached to the mounting arms 18 provided on the left and right of the upper joint 15. 8 shows the case where the lower end of 8 is welded.

In the figure, reference numeral 19 is a tightening nut for fixing the vibration absorber 10 between the mounting plate 7 and the upper mounting plate 11, 20 is a stop ring, and 21 is a wheel.

[0018]

Since the present invention is constructed as described above, it is a vibration absorbing device for a handle in a working machine in which engine vibrations are not transmitted to a worker's hand.

[Brief description of drawings]

FIG. 1 is a plan view in which a part of a mounting plate and a mounting cylinder of a first embodiment is cut away.

FIG. 2 is a front view of the above.

FIG. 3 is a plan view of a second embodiment.

FIG. 4 is a front view in which a part of the second embodiment is cut away.

[Explanation of symbols]

 1 Mounting frame 2.3 Bearing shaft 4 Vibration absorber 4'Mounting cylinder 7 Mounting plate 8 Handle 9 Vertical bearing shaft 10/11/12/13 Vibration absorber 14 Upper mounting plate a Machine body b Handle mounting device

Claims (2)

[Claims] 1. A support shaft body is installed in front of and behind a mounting frame attached to the machine body side, a vibration absorber such as rubber is fitted and arranged on the support shaft body, and the vibration absorber is fitted to the vibration absorber. A handle vibration absorbing device for a working machine, wherein a handle mounting device is provided on a mounting plate connected to a mounting cylinder, and the handle is mounted on the handle mounting device. 2. A mounting cylinder in which a bearing shaft is erected on a mounting frame attached to the machine body, a vibration absorber such as rubber is fitted and arranged on the bearing shaft, and the vibration absorber is fitted to the vibration absorber. The vertical support shaft is erected on the mounting plate connected to the, and a vibration absorber such as rubber is fitted and arranged on the vertical support shaft, and the handle is mounted on the upper mounting plate attached to the vibration absorber. A handle vibration absorbing device in a working machine, comprising a mounting device, and a handle protruding from the mounting device.