JP2006241787A - Hand guide roller - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hand guide roller which is constituted so that vibrations transmitted to a rod handle can be suitably attenuated. <P>SOLUTION: This hand guide roller comprises a car body frame 2 which supports front and rear rollers 3 and which is equipped with a vibration generating unit, and the rod handle 5 which is connected to the rear part of the car body frame so as to freely swing between a storage position and a use position. In the hand guide roller 1, a rubber isolator 14 is interposed in a connection part between the car body frame and the rod handle, and the vibrations, which are transmitted to the rod handle from the car body frame, are absorbed by the rubber isolator, so that even long-time operations can be hindered. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a hand guide roller for solidifying a ground and a paved surface of a road, and more particularly to a manually steered hand guide roller that changes a traveling direction by pushing and pulling a rod handle in a horizontal direction manually.

  As a vibration roller for consolidating the ground or paved surface of a road, a manually-steered hand guide roller that steers by pushing and pulling a rod handle in a horizontal direction by human power is known (see Patent Document 1). .

In this hand guide roller, a rod handle is fixed to a rear end portion of a vehicle body frame that supports a pair of front and rear rollers. The vehicle body frame is provided with a vibration generator, and vibration generated by the vibration generator is transmitted to the front and rear rollers via the vehicle body frame, thereby applying rolling force to the road surface. Then, by applying a horizontal force to the free end of the rod handle, the direction of the front and rear rollers is forcibly changed for each body frame to change the course.
Japanese Patent Laid-Open No. 09-003818

  This conventional configuration has an extremely simple structure and low manufacturing cost, but the rod handle is directly connected to the vehicle body frame, and the vibration generated by the vibration generator is directly transmitted to the rod handle. For this reason, vibrations are always transmitted to the operator's hand, and the wrist joint and the like are easily fatigued.

  The present invention has been devised to solve such problems of the prior art, and a main object of the present invention is to provide a hand guide roller configured to suitably dampen vibration transmitted to the rod handle. There is to do.

  In order to solve such a problem, the present invention provides a vehicle body frame 2 that supports the front and rear rollers 3 and includes a vibration generator, and the vehicle body frame that is rotatable between a storage position and a work position. In the hand guide roller 1 having the rod handle 5 coupled to the rear portion, the vibration isolating rubber 14 is interposed at the coupling portion between the vehicle body frame and the rod handle.

  According to the present invention as described above, the vibration isolating rubber absorbs vibration transmitted between the vehicle body frame and the rod handle, so that vibration of the rod handle is reduced and it is difficult for long-time work to occur. .

  Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 is an overall external view of a hand guide roller to which the present invention is applied. The hand guide roller 1 has a pair of rolling rollers 3 mounted on the front and rear of the body frame 2, and the roller 4 is driven to rotate by the driving force of the engine 4 mounted on the body frame 2. Is driven to vibrate the rolling roller 3 by driving a vibration generator (not shown).

  A rod handle 5 extending rearward is attached to the rear end portion of the vehicle body frame 2. The rod handle 5 is firmly connected to the vehicle body frame, and by pushing and pulling the free end of the rod handle 5 in the horizontal direction, the direction of the hand guide roller 1 can be changed in a predetermined direction. .

  A driving operation device 6 such as an engine starter switch or a forward / reverse lever is provided at the free end of the rod handle 5.

  As shown in FIGS. 2 and 3, the rod handle 5 is pivotally supported so as to be rotatable up and down with respect to the vehicle body frame 2. At the time of work, the driver can be set at a height that allows the driver's operation device 6 to be operated at an angle that is inclined rearward. Note that the position of the driving operation device 6 can be adjusted by freely rotating a predetermined angle range so as to correspond to the difference in height of the operator.

  Further, at the lowest position, the cushion rubber 8 comes into contact with the stopper 7 provided integrally with the vehicle body frame 2 so that the shock is absorbed even if the rod handle 5 falls suddenly. Furthermore, in the retracted position, a lock device (not shown) is provided so that the upright state of the rod handle 5 is maintained.

  The pivot handle of the rod handle 5 with respect to the body frame 2 is made of a pair of brackets 11a and 11b integrally coupled to the body frame 2 and a pair of synthetic resins fixed to the inner surfaces of the pair of brackets 11a and 11b. , A pair of shaft members 13 that are rotatably fitted to the central portions of the pair of collars 12, and a vibration-proof rubber member 14 that is coupled to each of the pair of shaft members 13. The proximal end side of the rod handle 5 is fixed to the pair of anti-vibration rubber members 14 in such a manner that the rod handle 5 is sandwiched between the pair of anti-vibration rubber members 14.

  Further, a round bar 15 extending in a direction perpendicular to the axis of the rod handle 5 is fixed to the base end side of the rod handle 5, and both ends of the round bar 15 are inserted into the pair of brackets 11a and 11b. An arc-shaped long hole 16 is formed. As shown in FIG. 3, a gap for loosely receiving the round bar 15 is formed in a portion corresponding to the use position of the rod handle 5 of the arc-shaped long hole 16.

  More specifically, the collar 12 is formed in a disk shape, for example, of a nylon resin material, and a pair of brackets, one of which is welded to the body frame 2 and the other 11b is bolted. Each is bolted to the opposing inner surface. A short shaft member 13 made of a steel material is rotatably fitted in the center hole 12a of both the collars 12.

  On the other hand, the rod handle 5 is made of a steel pipe, and its base end side is formed in a fork shape by welding a pair of flat bars 17 in parallel, and a flat disk is formed on the outer surface of the pair of flat bars 17. An anti-vibration rubber member 14 having a shape is bolted. It should be noted that a pair of nut members 18 are baked and fixed on both sides in the axial direction in the central portion of the vibration isolating rubber member 14, and a flat bar 17 is bolted to one of them and a shaft is attached to the other side. The member 13 is bolted. The round bar 15 penetrates both flat bars 17 and is welded to both flat bars 17.

  In this way, the pair of anti-vibration rubber members 14 are integrally fixed to the outer surfaces of the pair of flat bars 17, and the shaft members 13 are integrally fixed to the outer surfaces of the anti-vibration rubber members 14. With the member 13 fitted in the center hole 12a of the collar 12, the other bracket 11b is bolted to the vehicle body frame 2 so that the rod handle 5 is rotatable with respect to the brackets 11a and 11b, that is, the vehicle body frame 2. Will be combined. Here, by selecting a material having a high mechanical strength and a low coefficient of friction as the material of the collar 12, the function of the collar 12 as a radial and thrust bearing can be enhanced.

  These vibration-insulating rubber members 14 attenuate the vibration of the vehicle body frame 2 and greatly reduce the amount of vibration transmitted to the rod handle 5. In particular, when traveling straight, the round bar 15 fixed to the base end side of the rod handle 5 is loosely received in the arc-shaped elongated holes 16 formed in the brackets 11a and 11b, and the brackets 11a and 11b, the rod handle 5 and Therefore, the vibration of the vehicle body frame 2 is preferably cut off.

  When the rod handle 5 is pushed and pulled to change the direction of the hand guide roller 1, the anti-vibration rubber member 14 bends, but when the gap between the arc-shaped elongated hole 16 and the round bar 15 is exceeded, the inner circumference of the elongated hole 16 is increased. Since the round bar 15 comes into contact with the surface and the force applied to the rod handle 5 is directly transmitted to the brackets 11a and 11b via the round bar 16, the direction changing operation is not hindered.

1 is an overall perspective view of a hand guide roller to which the present invention is applied. It is a top view which cuts off and shows a part of this invention apparatus. It is a principal part side view of this invention apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Hand guide roller 2 Body frame 3 Rolling roller 5 Rod handle 11 Bracket 12 Collar 13 Shaft member 14 Anti-vibration rubber member 15 Round bar 16 Arc-shaped long hole

Claims (1)

A hand guide roller having a vehicle body frame that supports front and rear rollers and includes a vibration generator, and a rod handle that is coupled to a rear portion of the vehicle body frame so as to be rotatable between a storage position and a work position. And
An anti-vibration rubber is interposed at a joint between the body frame and the rod handle.

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