JP2003227147A - Wrist rest for steering lever of construction machinery - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve operational efficiency of a construction machine by enabling positional change of either wrist rest or its stay in accordance with driver' s request, regarding the wrist rest for an operating lever of a construction machine. <P>SOLUTION: The wrist rest 16 is installed at the rear side of the operating lever 14 arranged in the driver's seat 12 of the construction machine and the stay 24 of the wrist rest 16 whose one end is pivoted so as to be rotatable in the direction separating from the steering lever 14 by a pivot shaft 22, is provided. The wrist rest 16 rotatably fitted to the other end of the stay 24 is constituted as a container in common. At least either the stay 14 or the wrist rest 16 is arranged so that its positional adjustment can be made. In this way, it is made possible to practice the positional change in accordance with a driver's request to improve the operational efficiency. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wrist rest for a control lever that operates each device of a construction machine.

[0002]

2. Description of the Related Art Various control levers provided in an operator's room of a conventional construction machine such as a crane truck and a hydraulic excavator are
It is arranged with the operator seated in consideration of operability during work, but it is used to install an armrest behind the control lever in order to reduce fatigue of the arm due to long-time operation. .

However, since the armrest supports the elbow portion, fixing the wrist portion is less tiring in the work where the fine operation is mainly performed. Some have a wrist rest for this purpose. For example,
There is 052 publication. The technology described in the above publication is such that one end of a lever stand that rises from the floor of the cab, which is the operator room, is supported on the floor as a fulcrum, and is arranged rotatably in the front-rear direction of the driver's seat. A control lever device for a construction machine, which is provided with a wrist rest that doubles as a control lever and a handle for turning a lever stand.

[0004]

However, the wrist rest of the conventional construction machine described above is a completely fixed component for the steering lever, and the steering lever is also operated when the wrist rest is an obstacle. Since it is always present just behind, it cannot be moved even when the wrist rest is not needed, and the position of the wrist rest cannot be adjusted. Work efficiency is reduced.

The present invention was devised in view of the above problems. A steering lever is provided in the driver's seat of a construction machine, and the steering lever is provided behind the steering lever in a direction away from the steering lever. At least one of the stay and the wrist rest is provided in which a wrist rest whose one end is pivotally supported by a pivot shaft and whose mounting angle is changeable with respect to the other end of the stay is provided. A control lever for a construction machine improved so that the position can be changed according to the driver's desire by disposing one of the positions so that the work efficiency of the construction machine can be improved. The purpose is to provide a wrist rest for.

[0006]

Therefore, the wrist rest for the steering lever of the construction machine of the present invention according to claim 1 is
A steering lever arranged on a driver's seat of a construction machine, a stay arranged behind the operation lever and pivotably supported at one end on a pivot shaft in a direction away from the steering lever.
A wrist rest provided so that the mounting angle can be changed with respect to the other end of the stay is provided.

A wrist rest for a steering lever of a construction machine according to a second aspect of the present invention is a wrist rest for a steering lever which is disposed on at least one of the left and right front sides of a driver's seat of a construction machine. In the above, one end is pivotally supported by a pivot shaft provided on the floor of the driver's seat or an attachment member standing up from the driver's seat, or an upper revolving structure forming member at a lower portion of the floor of the construction machine. A stay mounted so as to be rotatable in the front-rear direction or the left-right direction of the driver seat with the fulcrum as a fulcrum, and the wrist rest provided so that the mounting angle can be changed with respect to the other end of the stay. It has a feature.

A wrist rest for a steering lever of a construction machine according to a third aspect of the present invention has a structure according to the first or second aspect, wherein the wrist rest is rotated by a support shaft provided at the other end of the stay of the wrist rest. It is characterized in that it is a wrist rest that also serves as a container and is configured so as to serve as a container that is attached as much as possible. A wrist rest for a steering lever of a construction machine according to a fourth aspect of the present invention is, in the configuration according to the third aspect, an arcuate slide groove provided in the wrist rest that also serves as the container, with the support shaft as a center, At least one is provided in the arcuate slide groove and has a fixing hole having an inner diameter larger than the width of the arcuate slide groove, and the fixing hole, the arcuate slide groove, and the stay are inserted and fitted into the fixing hole. And a fixed portion to be fixed and a slide portion extending substantially coaxially with the fixed portion, penetrating the arc-shaped slide groove and slidable in the arc-shaped slide groove.
A first slide / fixing device having a fixing member is provided.

According to a fifth aspect of the present invention, there is provided a wrist rest for a steering lever of a construction machine according to the second aspect of the present invention, wherein the mounting member or the upper revolving structure forming member is centered on the pivot shaft of the stay. An arc-shaped slide groove, a fixing hole having at least one of the arc-shaped slide groove and an inner diameter larger than the arc-shaped slide groove width, the fixing hole, the arc-shaped slide groove, and the stay. A fixed portion that is inserted into the fixing hole and is fixed in the fixing hole, and a slide portion that extends substantially coaxially with the fixed portion and that penetrates the arc-shaped slide groove and is slidable in the arc-shaped slide groove. And a second slide / fixing device having the following slide / fixing member.

According to a sixth aspect of the present invention, there is provided a wrist rest for a steering lever of a construction machine according to the fourth aspect, wherein the stay of the first slide / fixing device is provided with the second slide / fixing device. It is characterized by that.
According to a seventh aspect of the present invention, in the wrist rest for a control lever of a construction machine according to the second aspect of the present invention, in the configuration of the second or fifth aspect, the floor of the driver's seat or the mounting member rising from the driver's seat is a console box. It has a feature.

A wrist rest for a steering lever of a construction machine according to an eighth aspect of the present invention has the structure according to any one of the fourth to sixth aspects, wherein the first slide / fixing device and the second slide are provided. -It is characterized in that it is provided with an urging means for urging the slide / fixing member in a direction in which the fixing portion of the fixing device and the fixing hole are fitted to each other. A wrist rest for a steering lever of a construction machine according to a ninth aspect of the present invention is the structure according to any one of the fourth to eighth aspects, wherein the first slide fixing device and the second slide
A plurality of the fixing holes are provided in the arcuate slide groove of the fixing device.

According to a tenth aspect of the present invention, there is provided a wrist rest for a control lever of a construction machine according to any one of the third, fourth and fifth aspects, wherein the wrist rest also used as the container is the above. At the position on the control lever side, the side wall of the container other than the opening of the container is arranged so as to face upward, and the stay of the wrist rest that also serves as the container is the control lever.
It is characterized in that it is arranged so that the opening side of the container faces upward when the wrist rest is rotated away from or when the wrist rest is unnecessary.

According to an eleventh aspect of the present invention, in the wrist rest for a steering lever of a construction machine according to the sixth aspect of the present invention, in the configuration of the sixth or tenth aspect, the first slide / fixation is performed according to the usage state of the container serving as the wrist rest. The inclination angle of the container of the device and the attachment angle of the stay of the second slide / fixing device are adjustable. A wrist rest for a control lever of a construction machine according to a twelfth aspect of the present invention is the holding structure for restricting rotation of the stay according to any one of the second, fourth, fifth, tenth and eleventh aspects. It is characterized in that the member is provided on either of the above-mentioned mounting member or the upper revolving structure component.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a case where a wrist rest for a steering lever of a construction machine of the present invention is applied to a hydraulic excavator, and a schematic side view showing a side view of the hydraulic excavator,
2 is a side view of the driver's seat in the operator's room in FIG. 1 and is a schematic explanatory view showing a first slide / fixing device. FIG. 3 is a sectional view taken along line 3A-3A in FIG. -A schematic explanatory view showing a fixed state in which the fixing portion of the fixing member is fitted in the fixing hole provided in the slide groove, and Fig. 4 shows a cross section taken along line 4A-4A of Fig. 2 of the first slide-fixing member. FIG. 5 is a schematic explanatory view showing a state in which the slide part is slidable in the arcuate slide groove, FIG. 5 is a schematic explanatory view showing a holding device for holding the stay at the front position and the rear position of the stay shown in FIG. 2, and FIG. FIG. 7 is a modification of the embodiment shown in FIG. 2, showing a second slide / fixing device of the above-mentioned station provided with the configuration of the first slide / fixing device shown in FIG. When the above stay is pivotally supported in the left-right direction Schematic diagram illustrating, FIG. 8 is a schematic explanatory view of a main portion indicated by the arrow 8A of Fig.

As shown in FIG. 1, a construction machine, for example, a hydraulic excavator P is composed of an upper revolving structure 2, a lower traveling structure 4, and a working device 6. Above upper revolving structure 2
A cab 8, which is an operator room, is provided at the front end of the
A counterweight 10 is provided at the rear end portion.
Further, as shown in FIG. 2, steering levers 14 are provided on both left and right front portions of the driver's seat 12 of the cab 8 of the construction machine P, and the left steering lever side is shown in the present embodiment. A wrist rest 16 is provided on at least one side of the control lever 14. Driver's seat 1
2 is a mounting member 20 that stands up from the floor 18 or the driver's seat 12 on the side, for example, a console box 20, a bracket, other standing members, or a swing disposed on a lower portion of the floor of the construction machine P. One end is pivotally supported on a pivot shaft 22 provided on an upper revolving structure member 20S including a frame, a center frame, and other reinforcing members. Further, one end of the steering lever 14 is disposed on the driver's seat 12 of the construction machine P, and one end of the steering lever 22 is disposed behind the steering lever 14 and is rotatable in a direction away from the steering lever 14.
A wrist rest 1 having a stay 24 pivotally supported on the other end and having a mounting angle changeable with respect to the other end of the stay 24.
6 and.

The wrist rest 16 is a stay 24.
There is provided a container-rest wrist rest 16 configured to also serve as a container 17 rotatably attached to a support shaft 26 provided at the other end of the. As shown in FIGS. 3 and 4, at least one of the arcuate slide groove 28 and the arcuate slide groove 28 provided on the side wall 17a of the wrist rest 16 also serving as a container with the support shaft 26 as the center is provided. Fixing hole 3 larger than the width of the arcuate slide groove 28
0 is provided. A fixing portion 32 that is inserted through the fixing hole 30, the arcuate arcuate slide groove 28, and the stay 24 to be fitted into the fixing hole 30 to be fixed, and a fixing portion 32.
A first slide / fixing device 60A including a slide / fixing member 36 including a slide portion 34 extending further and penetrating the arc-shaped slide groove 28 and slidable in the arc-shaped slide groove 28 is provided. There is.

Further, as shown in FIG. 6, an arcuate slide groove 28 is provided in the mounting member 20 or the upper revolving body constituting member 20S around the pivot shaft 22 of the stay 24, and the arcuate slide groove is provided. 28 is an arcuate slide groove 28
At least one fixing hole 30 having a width larger than the width is provided, and in the present embodiment, a plurality of the fixing holes 30 are provided. Then, the above first slide / fixing device 60
Second slide / fixing device 60B having substantially the same structure as A
have. That is, as shown in FIG. 6, a fixing portion 32 which is inserted through the fixing hole 30, the arcuate slide groove 28, and the stay 24 to be fitted and fixed in the fixing hole 30.
The arc-shaped slide groove 2 that extends substantially coaxially from the fixed portion 32
The second slide / fixing device 60B includes a slide / fixing member 36 formed of a slide portion 34 penetrating 8 and slidable in the arc-shaped slide groove 28.

Since the first slide / fixing device 60A is provided as shown in FIG. 6, the mounting angle of the container 17 to the stay 24 can be selected at a desired position and the console box can be selected. The attachment angle with respect to 20 can be displaced between the a position in the used state of the wrist rest 16 and the b position in the unused state of the wrist rest stored.

Further, the mounting angle of the station 24 with respect to the console box 20 which is the mounting member can be selected at a desired position by the second slide / fixing device 60B. The first and second slide / fixing devices 60
In the case where both A and 60B are provided, the inclination angle of the container 17 of the first slide / fixing device 60A and the second slide / fixing device 60B according to the usage state of the container 17 also serving as the wrist rest. By adjusting the mounting angle of the stay 24, the wrist rest 16 can be used as the container 17 or the wrist rest 16 at any position of the stay 24.

Further, as shown in FIGS. 3 and 4, the slide / fixing member 36 urges the slide / fixing member 36 in a direction in which the fixing portion 32 and the fixing hole 30 are fitted to each other. For example, the biasing means 40 is arranged between the head portion 37 of the slide / fixing member 36 and the stay 24. Since the plurality of fixing holes 30 are provided in the arcuate slide groove 28 of the first and second slide / fixing devices 60A and 60B, as shown in FIGS. 1
It is possible to adjust the relative position of the stay 7 and the stay 24 and effectively use the wrist rest 16 that also serves as the container as the container 17 and the wrist rest 16.

Therefore, as shown in FIGS. 2 and 6, for example, the above-described wrist rest 16 also serving as a container is provided with the control lever 14.
The side wall 1 of the container other than the opening 17b of the container 17 at the side position.
7a is adjusted to face upward so that the opening 17b side of the container faces upward when the stay 24 of the wrist rest 16 also serving as the container is rotated to the rear of the driver's seat 12 or when the wrist rest 16 is not needed. A container 1 for arranging the inside of the wrist rest 16 as a cup holder and a small container
It can be transformed into 7 and used effectively.

A holding member 44 for restricting the rotation of the stay 24 is provided on the mounting member 20 or the upper revolving structure member 20S as shown in FIGS. 2, 5 and 6.
Excessive rotation of the stay 24 is restricted and smooth operation is possible. Since the present embodiment is configured as described above, as shown in FIGS. 2 and 6, the wrist rest 16 that also serves as a container is moved from the position a in the state of being used as a wrist rest to the container 17.
The stay 24 is detached from the holding device 44 and is rotated about the pivot shaft 22 to engage and hold the stay 24 with the holding device 44 at position b. Then, the head portion 37 of the slide / fixing member 36 shown in FIG. 3 is resisted against the biasing means 40, with the slide / fixing member 36 in the fixed state in which the opening 17b at the position a in FIG. , Push in the direction of arrow Y in FIG.
The fixing portion 32 is removed from the fixing hole 30, the slide portion 34 is slidable in the arcuate slide groove 28 as shown in FIG. 4, and the container 17 shown in FIG. When the pushing force of the head portion 37 of the slide / fixing member 36 is released in the state of the container 17 in which the opening 17b faces upward at the position b, the biasing means 40 is rotated. The slide / fixing member 36 is moved by the urging force of the stopper 36a and returns to its original position upon hitting the stopper 36a, and the fixing portion 32 is fitted and fixed in the fixing hole 30, and the opening 17b is directed upward as described above. The existing container 17 can be used as a small container. When operating in the opposite direction to the above, the slide / fixing member 36 is biased by the urging means 40.
When the operation is performed in the opposite direction to the above, the fixed portion 32 is removed from the fixing hole 30 by pressing against the slide hole 34 and the slide portion 34 is fitted into the slide groove 28 so as to be movable. The wrist rest 16 can be effectively used by moving from the state of 1 to the state of the a position.

Further, in the embodiment in which the position of the wrist rest is adjusted as shown in FIG. 6, the stay 24 described above is used.
Is the above-mentioned first slide with respect to the fixing hole 30 and the arc-shaped slide groove 28 installed in the console box 20.
A second slide / fixing device 60B having substantially the same structure as the fixing device 60A is provided, so that the stay 24 can be easily rotated and desired positioning can be set.

Further, in the above-described embodiment of the present invention, the case where the stay 24 of the wrist rest 16 is disposed so as to be rotatable in the front-rear direction of the construction machine P as shown in FIGS. However, the present invention is not limited to this, and even in the case of a modified example in which it is arranged behind the control lever 14 and is rotatably arranged, for example, in the left-right direction, the diagonal rear direction, and the downward direction of the construction machine P, The same effects as those of the embodiment can be obtained.

Next, a modified example of the above-described embodiment will be described with reference to FIGS. 7 and 8, but only parts different from the above-described embodiment will be described. That is, the wrist rest 16 of the steering lever 14 disposed on at least one of the left and right front portions of the driver's seat 12 of the construction machine P is provided, and the left and right traveling operation levers 5L and 5R are provided. Has been. The floor 18 of the driver's seat 12 or the right side console box 20 which is a mounting member 20 standing up from the driver's seat 12 has a protrusion 20T provided on the inner side wall thereof. Stay 2
One end of No. 4 is attached so as to be rotatable in the left-right direction of the driver's seat 12 with the pivot shaft 22 as a fulcrum.

Further, the mounting surface 20P has the projection 20T.
However, the present invention is not limited to this, and a step portion is provided on the console box 20 behind the control lever 14, and the first and second slide / fixing devices described above are provided on the rear surface of the step portion of the construction machine P facing rearward. Even if it is provided, the above-mentioned effects can be obtained. The wrist rest 16 is provided so that the mounting angle can be changed with respect to the other end of the stay 24.

The above-mentioned control lever 14 is not limited to the case where it is provided in the left and right console boxes 20, but the left and right control levers 14 may be arranged in one place. Lever 14 is one control lever 1
Even when the vehicle is maneuvered with No. 4, the same effect as the above can be obtained. Since the modified example is configured as described above, the stay 24 is rotated in the left-right direction around the pivot shaft 22 as in the above-described embodiment, and the wrist rest 1 is rotated.
6 can be easily switched to the used state and the unused state.

Then, as shown in FIGS. 7 and 8, the wrist rest 16 which also serves as a container holds the container 17 from the position a where the wrist rest 16 is in use and removes the stay 24 from the holding device 44 to attach the pivot shaft 22. The stay 24 is rotated around the center and the stay 24 is engaged and held by the holding device 44 at the position b. And FIG.
The slide / fixing member 36 shown in FIG. 3 in which the opening at the position a shown in FIG.
The head portion 37 of the fixing member 36 is resisted against the biasing means 40, and
8 in the direction of the arrow Y to remove the fixing portion 32 from the fixing hole 30 and make the slide portion 34 slidable in the arcuate slide groove 28 as shown in FIG. The container 17 is rotated clockwise about the support shaft 26 in the direction of arrow R1 to open the container 17 above the position b.
When the pushing force of the head portion 37 of the slide / fixing member 36 is released in the state of the container 17 with b facing, the slide / fixing member 36 is moved by the biasing force of the biasing means 40 as shown in FIG. Upon returning to the original position, the fixing portion 3
2 is fitted and fixed in the fixing hole 30, and the container 17 with the opening 17b facing upward as described above can be used as a small container. When operating in the opposite direction to the above, the slide / fixing member 36 is pressed against the biasing means 40 to remove the fixing portion 32 from the fixing hole 30, and the sliding portion 3
If 4 is fitted in the slide groove 28 to make it movable and the operation in the opposite direction is performed, it moves from the state of position b shown in FIG. 8 to the state of position a and is effectively used as the wrist rest 16. You can

The stay 24 and the wrist rest 1 described above are also provided.
By arranging 6 so that the position can be adjusted, the position can be changed according to the desire of the driver, and the work efficiency of the construction machine P can be improved. According to the present invention, the wrist rest 16 is also the container rest as described above.
Not just the wrist rest 16 but the stay 2
Since the desired positioning of 4 can be performed, the wrist rest 16 can be used efficiently. Further, according to the present invention, when the wrist rest 16 is unnecessary, it can be moved to an unobtrusive position and can be used as a cup holder or a small container at that position.

Further, the positions of the stay 24 and the wrist rest 16 can be adjusted and can be changed according to the driver's desire. Further, the attachment of the container 17 to the stay 24 is not limited to the above, and it may be rotatably attached to both of them by a bolt and a nut.

[0031]

As has been described in detail above, according to the wrist rest for a steering lever of a construction machine of the present invention as defined in claim 1, the steering lever arranged in the driver's seat of the construction machine and the operation lever are provided. -A stay which is disposed at the rear of the stay and whose one end is pivotally supported by a pivot shaft so as to be rotatable in a direction away from the control lever, and a mounting angle of which is changeable with respect to the other end of the stay. Since the stay is positioned as desired because the stay is provided, the wrist rest can be used efficiently and the positions of the stay and the wrist rest can be adjusted to meet the driver's wishes. Can be changed.

According to the wrist rest for the steering lever of the construction machine of the present invention as defined in claim 2, the steering lever of the steering lever disposed on at least one of the left and right front portions of the construction machine of the construction machine. In the wrist rest, one end is pivotally supported by a pivot shaft provided on a floor of the driver's seat or an attachment member standing up from the driver's seat, or an upper revolving structure forming member at a lower portion of the floor of the construction machine. A stay mounted so as to be rotatable in the front-rear direction or the left-right direction of the driver seat with a support shaft as a fulcrum, and the wrist rest provided so that the mounting angle can be changed with respect to the other end of the stay. Since it is possible to position the stay as desired,
The wrist rest can be used efficiently. If the wrist rest is unnecessary, it can be moved to an unobtrusive position. Further, since the positions of the stay and the wrist rest can be adjusted and can be changed according to the driver's desire, the living space of the cab can be effectively utilized.

According to the wrist rest for the steering lever of the construction machine of the present invention as set forth in claim 3, in the structure of claim 1 or 2, the support shaft provided at the other end of the stay of the wrist rest. In addition to the effect of claim 1 or 2, since it is a container-combined wrist rest that is configured to also serve as a container that is rotatably attached to, the wrist rest can be moved to an unobtrusive position when the wrist rest is unnecessary, Moreover, it can be used as a cup holder or a small container at that position. In addition, since the positions of the stay and the wrist rest can be adjusted and can be changed according to the driver's desire, work efficiency can be improved.

According to the wrist rest for the steering lever of the construction machine of the present invention as set forth in claim 4, in the structure of claim 3, the arcuate shape provided around the support shaft as the container also serves as the wrist rest. The slide groove, at least one fixing hole provided in the arc-shaped slide groove and having an inner diameter larger than the arc-shaped slide groove width, and the fixing hole inserted through the fixing hole, the arc-shaped slide groove, and the stay. A slide / fixing member comprising a fixing portion that fits into a hole and is fixed, and a slide portion that extends substantially coaxially with the fixing portion, penetrates the arc-shaped slide groove, and is slidable in the arc-shaped slide groove. Since the first slide / fixing device having the above is provided, in addition to the effect of claim 3, the wrist rest also serving as the container centering on the support shaft of the first slide / fixing device. By rotating the container can be easily transformed into a wrist rest or for containers of the above.

According to the wrist rest for the steering lever of the construction machine of the present invention as set forth in claim 5, in the structure of claim 2, the mounting member or the upper revolving body is centered on the pivot shaft of the stay. An arcuate slide groove provided in the component member, a fixing hole having at least one of the arcuate slide groove and having an inner diameter larger than the arcuate slide groove width, the fixing hole, the arcuate slide groove, A fixing portion which is inserted into the stay and is fitted and fixed in the fixing hole, and a slide portion which extends substantially coaxially with the fixing portion and which penetrates the arc-shaped slide groove and can slide in the arc-shaped slide groove. And a second slide / fixing device having a slide / fixing member consisting of
In addition to the above effect, the stay can be rotated about the pivot shaft of the second slide / fixing device to adjust the position, and the position can be easily changed according to the driver's desire, which is comfortable. Operation and work efficiency can be improved.

According to the wrist rest for the steering lever of the construction machine of the present invention as set forth in claim 6, in the structure of claim 4, the stay of the first slide / fixing device is provided at the second slide / fixing device. Since it is provided with,
In addition to the effect of the above, when used as the container and the wrist rest of the wrist rest, when changing the attachment position of the stay to the attachment member or the upper revolving structure component, both cases are configured at the same time. This can be done at any time according to the judgment of the driver, and the driver's fatigue can be reduced and the work efficiency can be improved. Claim 7
According to the wrist rest for a steering lever of a construction machine of the present invention described above, in the configuration of claim 2 or 5, the floor of the driver's seat or the mounting member rising from the driver's seat is a console box. In addition to the effect of item 2 or 5, the mounting member can be used also as an existing console box, and it is compact and the cost can be reduced.

According to the wrist rest for the steering lever of the construction machine of the present invention as set forth in claim 8, in the construction as set forth in any one of claims 4 to 6, the first slide / fixing device and the second slide. Since a biasing means for biasing the slide / fixing member is provided in a direction in which the fixing portion and the fixing hole of the fixing device are fitted to each other, in addition to the effect of any one of claims 4 to 6, The slide / fixing member is fixed by fitting the fixing portion and the fixing hole by the biasing means, and the head of the slide / fixing member is pushed against the biasing force of the biasing means. The above-mentioned wrist rest and stay can be easily moved by removing the fitting.

According to the wrist rest for a steering lever of a construction machine of the present invention as described in claim 9, in the structure as set forth in any one of claims 4 to 8, the first slide / fixing device and the second slide are provided. Since a plurality of the fixing holes are provided in the arcuate slide groove of the fixing device, in addition to the effect of any one of claims 4 to 8, the slide / fixing member is fixed to the fixing portion at a plurality of positions. It can be fitted into the hole, and the fixing and detaching can be easily performed, and the transformation of the wrist rest and the attachment angle of the stay can be adjusted.

According to the wrist rest for the steering lever of the construction machine of the present invention as set forth in claim 10, in the structure as set forth in any one of claims 3, 4 and 5, the wrist rest which also serves as the container is the steering wheel. At the position on the lever side, the container side wall other than the opening of the container is arranged so as to face upward, and when the stay of the wrist rest that also serves as the container is rotated in the direction away from the control lever or the wrist rest. When it is unnecessary, the container is arranged so that the opening side of the container faces upward. Therefore, in addition to the effect of any one of claims 3, 4 and 5, it is effective to transform the wrist rest into a container. Can be effectively utilized.

According to an eleventh aspect of the present invention, in the wrist rest for a steering lever of a construction machine according to the sixth aspect, in the constitution of the sixth or tenth aspect, the first slide / fixation is performed according to the usage state of the container serving also as the wrist rest. Since the inclination angle of the container of the device and the attachment angle of the stay of the second slide / fixing device can be adjusted, the position adjustment of the stay and the wrist rest can be performed in addition to the effect of claim 6 or 10. It can be carried out organically and can be changed according to the driver's wishes, which can reduce the feeling of fatigue and improve work efficiency.

According to the wrist rest for the steering lever of the construction machine of the present invention as defined in claim 12, claim 2, 4, 5, 1
In any one of the configurations 0 and 11, the holding member for restricting the rotation of the stay is provided on either the attachment member or the upper revolving structure member. In addition to the effect of any one of 10, 10, and 11, the holding member for restricting the rotation of the stay is provided in the mounting member or the upper swing body constituting member, and excessive rotation of the stay is restricted to ensure smooth operation. You can

[Brief description of drawings]

FIG. 1 is a schematic side view showing a side surface of an embodiment in which a steering lever wrist rest of a construction machine according to the present invention is applied to a hydraulic excavator.

FIG. 2 is a schematic explanatory view showing a side surface of a driver's seat of the cab of FIG. 1 and showing a first slide / fixing device.

3 shows a cross section taken along the line 3A-3A in FIG.
It is a schematic explanatory view showing a fixed state in which the fixing portion of the first slide / fixing member is fitted into a fixing hole provided in the slide groove.

4 shows a cross section taken along the line 4A-4A in FIG.
It is a schematic explanatory view showing a state in which the slide portion of the first slide / fixing member can slide in the arcuate slide groove.

5 is a schematic explanatory view showing a holding device for holding the stay shown in FIG. 2 at a front position and a rear position.

6 is a schematic explanatory diagram showing a slide of a stay provided in a console box and a securable second slide / fixing device having the configuration of the first slide / fixing device shown in FIG. 2;

FIG. 7 is a diagram showing a modified example of the embodiment shown in FIG. 6, and is a schematic explanatory diagram showing a case where a stay is pivotally supported so as to be rotatable in the left-right direction.

8 is a schematic explanatory diagram of a main portion shown by an arrow 8A in FIG.

[Explanation of symbols]

2 Upper revolving structure 4 Lower manipulator 5L Left hand operation lever 5R Right hand operation lever 6 Working device 8 cabs 10 cantaweight 12 driver's seat 14 Control lever 16 Wrist rest 17 containers 18 floors 20 Mounting member (console box) 20T protrusion 20P mounting surface 22 Axis 24 stay 26 Support shaft 28 Arc-shaped slide groove 30 fixing holes 32 Fixed part 34 Slide part 36 Slide / Fixing member 37 head 40 urging means 44 Holding device 60A First slide / fixing device 60B Second slide / fixing device P construction machinery

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Akira Yamada             7-14 Wadamiyadori, Hyogo-ku, Kobe-shi, Hyogo             Issue Nishiryo Engineering Co., Ltd. F-term (reference) 2D015 EB01

Claims (12)

[Claims] 1. A steering lever disposed in a driver's seat of a construction machine, and one end portion pivotally supported by a pivot shaft disposed rearward of the operation lever and rotatable in a direction away from the steering lever. And a wrist rest provided so that the mounting angle can be changed with respect to the other end of the stay, a wrist rest for a control lever of a construction machine. 2. A wrist rest of a control lever disposed on at least one of the left and right front sides of a driver's seat of a construction machine, a mounting member standing on the floor of the driver's seat or standing up from the driver's seat, or One end of the construction machine is pivotally supported by a pivot shaft provided in an upper revolving structure forming member at a lower portion of the floor of the construction machine so that the operator seat can be rotated in the front-rear direction or the left-right direction. A wrist rest for a control lever of a construction machine, comprising: a stay attached to the stay; and the wrist rest provided so that an attachment angle can be changed with respect to the other end of the stay. 3. The wrist rest as a container, which is also used as a container rotatably attached to a support shaft provided at the other end of the stay. A wrist rest for the control lever of the construction machine according to 1 or 2. 4. An arc-shaped slide groove provided on the wrist rest that also serves as the container with the support shaft as a center, and at least one fixed member provided in the arc-shaped slide groove and having an inner diameter larger than the arc-shaped slide groove width. A fixing part which is inserted into the fixing hole, the fixing hole, the arcuate slide groove, and the stay and is fitted and fixed in the fixing hole, and the arcuate slide groove extending substantially coaxially with the fixing part. 4. A control lever for a construction machine according to claim 3, further comprising: a first slide / fixing device having a slide / fixing member formed of a slide portion penetrating through the slide groove and slidable in the arc-shaped slide groove. Wrist rest for. 5. An arc-shaped slide groove provided in the mounting member or the upper revolving structure forming member around the pivot shaft of the stay, and at least one arc-shaped slide groove provided in the arc-shaped slide groove. A fixing hole having an inner diameter larger than the groove width, a fixing portion which is inserted through the fixing hole, the arcuate slide groove, and the stay to be fitted and fixed in the fixing hole, and substantially coaxially with the fixing portion. A second slide / fixing device having a slide / fixing member which is extended and penetrates the arc-shaped slide groove and is slidable in the arc-shaped slide groove. A wrist rest for the control lever of the construction machine described in 2. 6. The wrist rest for a control lever of a construction machine according to claim 4, wherein the stay of the first slide / fixing device is provided with the second slide / fixing device. 7. The wrist rest for a control lever of a construction machine according to claim 2, wherein the mounting member rising from the floor of the driver's seat or from the driver's seat is a console box. 8. An urging means for urging the slide / fixing member in a direction in which the fixing portion and the fixing hole of the first slide / fixing device and the second slide / fixing device are fitted to each other. The wrist rest for a control lever of a construction machine according to any one of claims 4 to 6, which is characterized by being provided. 9. The first slide / fixing device and the second device described above.
The wrist rest for a control lever of a construction machine according to any one of claims 4 to 8, wherein a plurality of the fixing holes are provided in the arcuate slide groove of the slide / fixing device. 10. The wrist rest that also serves as the container is arranged so that the side wall of the container other than the opening of the container faces upward at a position on the side of the control lever, and the stay of the wrist rest that also serves as the container. 4. When the container is rotated in a direction away from the steering lever or when the wrist rest is unnecessary, the opening side of the container is arranged so as to face upward. A wrist rest for a control lever of a construction machine according to any one of 4 and 5. 11. The tilt angle of the container of the first slide / fixing device and the mounting angle of the stay of the second slide / fixing device can be adjusted according to the usage state of the container also serving as the wrist rest. The wrist rest for a control lever of a construction machine according to claim 6 or 10, characterized in that. 12. A holding member for restricting rotation of the stay is provided on any one of the mounting member and the upper revolving structure member.
A wrist rest for a control lever of a construction machine according to any one of 0 and 11.