JP2001115492A - Arm rest in construction machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an armrest which can be installed in a construction machine provided with a cab even in the case where the arm rest cannot be installed on right and left side surface parts of a seat or an upper surface part of a console box. SOLUTION: This armrest 3 is detachably installed on an inner wall surface part 1a of a cab 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to the technical field of an armrest in a construction machine such as a hydraulic shovel.

[0002]

2. Description of the Related Art Generally, a seat for an operator to sit down and perform various operations is provided in a cab of a construction machine such as a hydraulic shovel or the like. There is an armrest for placing an armrest on the arm to measure the stability of the arm when operating the operating tool and to reduce the fatigue. Conventionally, as shown in FIG. 7, the armrest 10 is mounted on the left and right side surfaces of the seat backrest 11, or on the upper surface of a console box disposed on both left and right sides of the seat. However, when it is not possible to secure a space for mounting the armrests on the left and right sides of the seat or on the upper surface of the console box, or when using a low-cost seat that cannot be mounted with an armrest, the actual situation is that no armrest is provided. Was.

[0003]

It is desirable that the armrest be provided as much as possible in order to stabilize operation and reduce fatigue. Therefore, the armrest is preferably provided on the left and right side surfaces of the seat and the upper surface of the console box. Even in the case where the mounting space for the armrest cannot be secured, or in the case of using a low-cost seat where the armrest cannot be mounted, it is required to provide the armless, and there is a problem to be solved by the present invention. .

[0004]

SUMMARY OF THE INVENTION In view of the above-mentioned circumstances, the present invention has been made to solve these problems, and has a cab surrounding a seat portion on which an operator sits. In the construction machine, when arranging the armrests on the left and right sides of the seat, the armrests are attached to the inner wall surface of the cab. By doing so, an armless can be provided even when the armrest cannot be attached to the left and right side surfaces of the seat or the upper surface of the console box. In this case, the armrest can be detachably attached to the attachment seat fixed to the inner wall surface of the cab, so that the user can easily attach and detach the armrest. Further, the armrest can be configured so as to be swingable between a set posture in which the armrest of the operator is substantially horizontal and on which the operator's elbow can be placed, and a retracted posture which swings upward and backward from the set posture. In addition, the armrest
The front and rear position can be adjusted freely.

[0005]

Next, an embodiment of the present invention will be described with reference to the drawings. In the drawings, reference numeral 1 denotes a cab provided on a hydraulic shovel, in which a seat 2 on which an operator sits is installed, and operating tools such as left and right console boxes, operating levers and operating pedals (not shown). Various operation component devices such as switches, switches, dials, and operation panel are provided. 2a is a backrest portion of the seat 2.

On the other hand, reference numeral 3 denotes left and right armrests arranged on the left and right sides of the seat 2 for the operator to place his / her elbows (arms) thereon. The cab 1 is attached to left and right inner wall portions 1a via a member 5 and a support bracket 6, respectively.

The right and left mounting seats 4 are fixed to the left and right inner wall portions 1a of the cab 1 by fixing means such as welding.

The mounting member 5 is formed by integrally fixing first and second plates 5a and 5b and a cylindrical pipe 5c interposed between the plates 5a and 5b. However, the first plate 5a is detachably attached to the attachment seat 4 via bolts 7.

Further, the support bracket 6 is mounted on the second plate 5b of the mounting member 5 via a screw 8. At the front of the support bracket 6, the armrest 3 is mounted via a support shaft 9. The rear part is swingably mounted. The armrest 3 is set in a substantially horizontal state around the support shaft 9 by a ratchet mechanism or the like (not shown) so that the operator can place his or her elbow, and a retreating posture that swings upward and backward from the set posture. You can change the shape and swing.

In the construction described above, the armrest 3 is attached to the left and right inner wall portions 1a of the cab 1 via the attachment seat 4, the attachment member 5, and the support bracket 6, as described above. . As a result,
The armrests 3 are provided on the left and right sides of the seat 2 even when the space for mounting the armrest cannot be secured on the left and right side surfaces of the seat or the upper surface of the console box, or when a low-cost seat where the armrest cannot be mounted is used. Can be arranged, which can contribute to improvement of operability and reduction of fatigue.

[0011] Moreover, the cab 1 has an inner wall 1
a mounting member 5 is removably attached to the mounting seat 4 fixed to the mounting member a through a bolt 7;
Since the support bracket 6 that supports the armrest 3 is configured to be attached with the screw 8, the user can easily attach and detach the armrest 3 to and from the inner wall portion 1 a of the cab. As a result, for example, when the armrest 3 is unnecessary, or only one of the left and right armrests 3 is attached, the armrest 3 can be arbitrarily attached and detached according to the operator's preference, which is convenient. Further, in this case, the armrest 3 is configured so as to swing freely into a substantially horizontal set posture and a retracted posture that swings upward and backward from the set posture, so that the armrest 3 is retracted when the armrest 3 is not used. By taking the posture, there is an advantage that the arrangement space of the armrest 3 can be effectively used.

The present invention is, of course, not limited to the above embodiment. For example, as shown in FIG. 6 (A), a second embodiment shown in FIG. The support bracket 6 is provided by providing a plurality of insertion holes 6a in the front-rear direction, or by opening a long hole 6b facing the front-rear direction in the support bracket 6 as in the third embodiment shown in FIG. It can also be provided to be slidable back and forth with respect to the mounting member 5. By doing so, the front-rear position of the armrest 3 can be arbitrarily adjusted independently for the left and right according to the preference of the operator.

[Brief description of the drawings]

FIG. 1 is a plan view showing the inside of a cab.

FIGS. 2A and 2B are a plan view and a front view of an armrest attached to a support bracket.

FIGS. 3A and 3B are front views of a left mounting member,
It is a side view.

FIGS. 4A and 4B are front views of a right mounting member,
It is a side view.

FIG. 5A is a plan view showing an attached state of a left attachment seat, and FIG. 5B is a side view showing an attached state of a right attachment seat.

FIG. 6A is a diagram showing a second embodiment, and FIG. 6B is a diagram showing a third embodiment.

FIG. 7 is a view showing a state of attachment of a conventional armrest.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cab 1a Inner wall part 2 Seat 3 Armrest 4 Mounting seat 7 Bolt

Continuation of the front page (72) Inventor Akitoshi Hamada 4-10-1, Yoga, Setagaya-ku, Tokyo New Caterpillar Mitsubishi Corporation F-term (reference) 2D015 EA02 EB01 3B088 BA03 BA04

Claims (4)

[Claims] 1. A construction machine comprising a cab surrounding a seat portion on which an operator sits, wherein when arranging armrests on the left and right sides of the seat, the armrest is attached to an inner wall portion of the cab. Armrests in construction machinery. 2. The armrest according to claim 1, wherein the armrest is detachably attached to an attachment seat fixed to an inner wall portion of the cab. 3. The armrest according to claim 1, wherein the armrest is in a substantially horizontal state, and swings between a set position in which an operator's elbow can be placed, and a retracted position swinging upward and backward from the set position. An armrest for a construction machine, which is freely movable. 4. The armrest according to claim 1, wherein the armrest is mounted so as to be adjustable in the front-rear position.