JP2011255807A - Structure of armrest for construction machinery - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an armrest structure for construction machinery that reduces the fatigue of an operator, and that not only places an arm on an arm-placing member but also achieves the effective utilization of an operator's cab space to improve the efficiency of operation.SOLUTION: The armrest structure includes: an arm-placing member support frame 8; and the arm-placing member 9 disposed on an upper part of the arm-placing member support frame 8. The arm-placing member support frame 8 includes a container-shaped upper member 8a with a recess configured to storage articles. The arm-placing member 9 is configured to be openable and closable.

Description

  The present invention relates to an armrest structure for a construction machine.

  Conventionally, in construction machines such as a power shovel and a crane device, an operator sitting on a driver's seat in a cab has an armrest on which an operator's arm can be placed when operating the wrist control operation lever. This makes it possible to operate in an easy posture, thereby reducing operator fatigue and improving work efficiency.

  FIG. 5 is a front view of the vicinity of the driver's seat in the driver's cab of a conventional construction machine. A pair of left and right traveling levers 2 for moving the construction machine forward and backward are provided at the front center of the driver's seat 1. A pair of left and right wrist control operating levers 4 are provided on the upper surface of the console box 3 provided on the left and right sides of the console box 3 to operate the arm and the bucket, and on the rear side (seat side) of the wrist control operating lever 4 The armrest 5 is installed.

  6 is a VI-VI direction arrow view in the vicinity of the console box of FIG. 5, and FIG. 7 is a longitudinal sectional view of the armrest of FIG. An arm rest member support frame 8 that can be adjusted up and down is attached to the upper end portion of the bracket 6 that is attached in close proximity via a bracket 7. The upper surface of the arm rest member support frame 8 is cushioned. An arm rest member 9 having a buffer material is placed and fixed. Thus, the arm rest 5 is constituted by the arm rest member support frame 8 and the arm rest member 9. In FIG. 7, 6 a is a vertically long hole provided in the bracket 6 for adjusting the height position of the armrest 5, 10 is a bolt for fastening the brackets 6 and 7, and 11 is an arm rest member 9 for the arm rest member support frame 8. A bolt 12 for fixing to the arm 12 is a reinforcing member embedded in the arm rest member 9.

  When the operator operates the wrist control operation lever 4, the arm is placed on the arm rest member 9 of the armrest 5, and the wrist control operation lever 4 is grasped by hand to perform the operation.

  For example, Patent Document 1 and Patent Document 2 are provided as examples in which an armrest is provided in a cab of a construction machine. Thus, in Patent Document 1, the armrest is attached to a console box (referred to as “side column” in Cited Document 1). Moreover, in patent document 2, the armrest is attached to the backrest of the driver's seat.

JP 2008-11930 A JP 2000-233672 A

  In any of the conventional examples shown in FIGS. 5 to 7 and cited documents 1 and 2, the member for directly placing the armrest arm needs to have a width corresponding to the thickness of the arm of the operator. Tends to be large, and it has only the original function as a member for placing an arm, and therefore, it is not possible to sufficiently utilize the space in the cab.

  In view of the above-described circumstances, the present invention not only mounts an arm on an armrest member but also effectively uses a space in a cab of a construction machine in order to reduce operator fatigue and improve work efficiency. The purpose of the present invention is to provide an armrest structure for a construction machine.

  An armrest structure for a construction machine according to the present invention includes an arm rest member support frame and an arm rest member disposed on an upper portion of the arm rest member support frame, and the arm rest member support frame has a recess capable of accommodating an article. The arm rest member is configured to be openable and closable.

  In the armrest structure of the construction machine according to the present invention, the arm rest member support frame and the arm rest member disposed on the upper portion of the arm rest member support frame are configured so that the vertical position can be adjusted integrally.

  In the armrest structure of the construction machine according to the present invention, at least the surface on which the arm is placed of the arm rest member is made of a cushioning material.

  According to the armrest structure of the construction machine of the present invention, since the operator can perform work by placing the arm on the armrest member when operating the operation lever of the construction machine, it is possible to operate in an easy posture. Thus, the operator's fatigue is reduced, the work efficiency is improved, and the member of the armrest support frame can be used as a container for storing articles, so that the space in the cab can be used effectively. Can produce various excellent effects.

It is a vertical side view which shows the 1st example of the armrest structure of the construction machine of this invention, and is a vertical side view which shows the state in case an operator puts an arm on an armrest member. In the first example of the armrest structure of the construction machine of FIG. 1, it is a longitudinal side view showing a state in which an arm rest member is opened. It is a perspective view of the upper member of the arm rest member support frame in the first example of the armrest structure of the construction machine of the present invention. It is a vertical side view which shows the 2nd example of the armrest structure of the construction machine of this invention. It is a front view of the driver's seat vicinity in the cab of the construction machine which installed the conventional armrest. It is a VI-VI direction arrow directional view in the console box vicinity of FIG. It is a vertical side view of the armrest of FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  1 to 3 show a first example of an armrest structure for a construction machine according to the present invention. In the figure, the same reference numerals as those shown in FIG. 7 denote the same parts. Thus, in the first example, the arm rest member support frame 8 can be integrated by fastening the upper member 8a and the lower member 8b with the bolt 13 or by welding. The upper member 8a is formed in a container shape having a concave portion opened at the top so that small articles such as cigarettes, writers, pencils, and notebooks can be put inside. In addition, the bottom surface of the upper member 8a is integrally connected to a hypotenuse that is inclined upward toward the side away from the driver's seat at the end away from the driver's seat. The flat part 14 which protrudes to the side which leaves | separates from is formed, and as a whole, it is formed in the shape of a ship as shown in FIG. A partition plate 15 extending in the front-rear direction of the construction machine is attached to the recess of the upper member 8a so that articles placed in the recess do not move during the operation of the construction machine. This partition plate 15 may not be provided. Further, the bracket 7 for fixing the armrest 5 to the bracket 6 attached to the console box 3 is fixed to the lower surface of the lower member 8b without penetrating the oblique side of the upper member 8a.

  A bracket 16 is fixed to an end of the upper member 8a on the driver's seat side, and an arm rest is provided on the bracket 16 so that the bracket 16 can be rotated in the front-rear direction of the construction machine with respect to the vertical plane via the pin 17. A member 9 is pivotally supported. The arm rest member 9 is formed of a cushioning material having cushioning properties. When the arm rest member 9 is positioned in a substantially horizontal state as shown in FIG. 1, the upper surface of the arm rest member 9 allows the arm to be easily placed when the operator holds the wrist control operation lever 4. It is formed with a slight downward slope (about 5 degrees) in the direction away from the driver's seat. Further, the arm placing member 9 is provided with a key means (not shown) so that it can be fixed to the upper member 8a.

Next, the operation of the above embodiment will be described.
When the operator operates the wrist control operation lever 4 (see FIGS. 5 and 6) of the construction machine, the arm resting member 9 of the armrest 5 closes the opening of the upper member 8a as shown in FIG. Is placed on the arm rest member 9, and the wrist control operation lever 4 is gripped for operation.

  If necessary, when the wrist control operating lever 4 is not operated, the arm rest member 9 is opened as shown in FIG. 2, and small articles are stored in the recesses of the upper member 8a. You can take out and use the existing items.

  According to the first example of the armrest structure of the construction machine of the present invention, the operator can place the arm on the arm rest member 9 of the armrest 5 when the wrist control operation lever 4 is operated. Operation in a posture is possible, operator fatigue is reduced, and work efficiency is improved. Moreover, since the upper member 8a of the arm rest member support frame 8 can be used as a container for goods, the space in the cab can be effectively used.

  FIG. 4 shows a second example of the armrest structure of the construction machine according to the present invention. In the figure, the same reference numerals as those shown in FIG. Thus, in the second example of the armrest structure of the construction machine according to the present invention, in order to increase the storage space for the article of the upper member 8a in the arm rest member supporting frame 8, the upper member 8a has the hypotenuse in the first example. It is not provided, and its bottom surface extends to the side farther from the driver's seat than in the first example. Thus, the brackets 6 and 7 are configured to penetrate the bottom surface of the upper member 8a.

  In the second example of the armrest structure of the construction machine of the present invention, the same effect as the first example can be obtained, and the volume of the concave portion of the upper member 8a is increased, so that the amount of articles to be stored is large. can do.

  In addition, in the armrest structure of the construction machine according to the present invention, the case where the armrest member can be rotated with respect to the vertical plane with the driver seat side end as a fulcrum has been described. It can be made to rotate in the vertical plane with the end portion as a fulcrum, the armrest member can also be turned in the left-right direction of the driver's seat, and can be moved horizontally in the front-rear and left-right directions of the driver's seat As described above, the arm placing member is composed entirely of a cushioning cushioning material and a reinforcing member is placed inside. However, at least a surface on which the arm is placed is cushioned. Needless to say, the present invention may be made of a natural material, and various changes may be made without departing from the scope of the present invention.

8 Arm rest member support frame 8a Upper member (member)
9 Arm rest material

Claims (3)

  An arm rest member support frame; and an arm rest member disposed on an upper portion of the arm rest member support frame. The arm rest member support frame includes a container-like member having a recess capable of accommodating an article. An armrest structure for a construction machine, wherein the placing member is configured to be openable and closable.   The armrest structure for a construction machine according to claim 1, wherein the arm rest member support frame and the arm rest member disposed on the upper portion of the arm rest member support frame are configured so that the vertical position can be adjusted integrally.   The armrest structure for a construction machine according to claim 1 or 2, wherein at least a surface of the arm placing member on which the arm is placed is made of a cushioning material.

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