Construction machinery cab

Abstract

To provide a cab of a construction machine which is highly convenient and looks good on the inside thereof.SOLUTION: A cab of a construction machine 1 comprises an operator's seat 20 placed in a cab 5, a wall surface 11 covering the operator's seat 20, an air conditioning unit 40 provided in the wall surface 11 and having an outside air filter 41 for intake outside air. The outside air filter 41 is detachable from the inside of the cab through an opening 32 provided in the wall surface 11, and the opening 32 is covered with a detachable cup holder 50.SELECTED DRAWING: Figure 8

Description

[Technical field]

[0001] The present invention relates to a cab for a construction machine. [Background technology]

[0002] Generally, construction machines such as hydraulic excavators are composed of a lower traveling body and an upper rotating body. The upper rotating body is equipped with an attachment having an arm and a cab as a driver's room in which an operator who operates the machine sits.

[0003] In recent years, an increasing number of construction machines are equipped with air conditioning units in the cab so that workers can work comfortably. The air conditioning unit has an outside air filter to prevent dust and other foreign matter from being introduced into the cab along with the outside air.

[0004] For example, Patent Document 1 discloses an air conditioning device for a hydraulic excavator in which an air conditioning unit is attached to the right side wall of the cab so that it can be removed from inside and outside the cab during maintenance after installation on the vehicle, etc. Patent Document 2 discloses a construction machine in which a filter housing section is provided, opening into the cab box, at the middle of an outside air duct that passes between the side of the cab box and the side of the driver's seat. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent No. 4261962 [Patent Document 2] Patent No. 5612134 Summary of the Invention [Problem to be solved by the invention]

[0006] In construction machines equipped with such air conditioning units, there is a demand for the interior of the cab to be a more comfortable working space that is convenient and looks good.

[0007] However, in Patent Document 1, the outside air filter is configured to be detachable from an outside air inlet opening to the outside of the cab, and cannot be detached from inside the cab. In Patent Document 2, the filter insertion port of the outside air filter is configured to include a filter housing portion that opens upward inside the cab box, and the outside air filter can be detached from inside the cab, but the filter insertion port is located to the side of the driver's seat and opens upward, so the outside air filter and the filter insertion port are easily visible from the driver's seat.

[0008] Making the outside air filter removable from the inside of the cabin makes maintenance easier; however, because the inside of the cab is a small, limited space, installing the outside air filter in a location that is easy to remove and attach will mar the appearance of the inside of the cab, creating a problem in that convenience and appearance cannot be achieved at the same time.

[0009] The present invention has been made in consideration of the above-mentioned points, and an object of the present invention is to provide a cab for a construction machine which is highly convenient from the inside and has a good appearance. [Means for solving the problem]

[0010] In order to achieve the above-mentioned object, a first invention is a cab for a construction machine comprising a driver's seat arranged within the cab, a wall covering the driver's seat, and an air conditioning unit provided within the wall and having an outside air filter for intake of outside air, wherein the outside air filter is configured to be removable from the inside of the vehicle through an opening provided in the wall, and the opening is covered by a removable item holder.

[0011] According to the above configuration, the outside air filter can be attached and detached from the inside of the cab, making maintenance easy. In addition, the opening for removing the outside air filter is covered with an item holder that can be used by the operator operating the vehicle as a small item holder or cup holder. By using the item holder to cover the opening, the outside air filter is not visible to the operator, making it possible to achieve both a good appearance and convenience inside the cab. Since the item holder is detachable, the inside of the item holder can be easily cleaned.

[0012] In the second invention, in the first invention, the device further comprises a duct that holds the outside air filter within the wall surface, and a support member to which the item holder is attached and detached, and the support member has a covering portion that covers the opening and can abut against the duct, and an insertion hole provided in the covering portion through which the outside air filter can be inserted.

[0013] According to the above configuration, the covering part covering the opening abuts against the duct, so that when the outdoor air filter is removed, the duct holding the outdoor air filter is not pulled out together with the outdoor air filter, and the outdoor air filter can be easily removed.

[0014] A third invention according to the first or second invention is characterized in that a bottom plate portion for supporting a bottom portion of the article holder is formed on a lower portion of the covering portion.

[0015] According to the above configuration, the bottom plate portion supports the bottom of the article holder, thereby preventing the article holder from falling off due to vibrations that occur while the construction machine is traveling or working.

[0016] The fourth invention is characterized in that, in any of the first to third inventions, the opening is provided to the side or in front of the driver's seat, and the outside air filter is configured to be removable by pulling it out in the left and right direction.

[0017] According to the above configuration, the opening is provided in a position that is easy to handle from the driver's seat, making it easier to remove the outside air filter and increasing the convenience of the article holder that covers the opening. Although the opening is located in a position that is easily visible from the driver's seat, it does not spoil the appearance, which is the significance of the configuration of the present invention.

[0018] A fifth invention is characterized in that in the fourth invention, the article holder has an attachment / detachment operating part at a front end part which is attachable to and detachable from the opening, and the attachment / detachment operating part engages with the opening.

[0019] According to the above configuration, by providing the attachment / detachment operating part at the front end of the item holder farthest from the driver's seat, it is possible to prevent an operator in the driver's seat from accidentally touching the attachment / detachment operating part and causing the item holder to fall off.

[0020] The sixth invention is characterized in that, in any of the first to fifth inventions, the item holder is provided with an elastic member extending from the wall side toward the inside of the room, and the wall side end of the elastic member presses the end of the outdoor air filter toward the wall side, and when an item is placed in the item holder, the indoor side end presses the item toward the inside of the room.

[0021] According to the above-mentioned configuration, the wall side end of the elastic member presses the end of the outside air filter against the wall side, thereby fixing the object holder and preventing rattling. Also, the indoor side end presses the object against the indoor side, thereby fixing the object in the object holder. Effect of the Invention

[0022] It is possible to provide a cab for a construction machine that is highly convenient on the inside and has a good appearance. [Brief description of the drawings]

[0023] [Figure 1] 1 is a schematic side view of a hydraulic excavator according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a cross-sectional view of an upper rotating body showing the inside of a cab according to the embodiment. [Diagram 3] FIG. [Figure 4] FIG. 4 is a side view showing the front right side inside the cab. [Diagram 5] 1 is a side view of the air conditioning cover facing the interior side, showing the state in which the support member is attached. FIG. [Figure 6] FIG. 2 is a perspective view of a support member according to the embodiment. [Figure 7] FIG. 4 is a side view showing the right front inside the cab with the cup holder removed. [Figure 8] FIG. 8 is an end view taken along line VIII-VIII in FIG. [Figure 9] 1 is a perspective view of a cup holder according to the embodiment of the present invention as viewed from the inside of a vehicle. [Figure 10] 2 is a perspective view of the cup holder according to the embodiment, seen from the wall surface side. FIG. [Figure 11] FIG. 4 is a perspective view for explaining the positions of a cup holder and an outside air filter. [Figure 12] 13 is a bottom view for explaining a guide portion of the cup holder. FIG. [Figure 13] 11 is a perspective view showing a procedure for attaching and detaching the cup holder and the outside air filter. FIG. [Figure 14] 11 is a perspective view showing a procedure for attaching and detaching the cup holder and the outside air filter. FIG. [Figure 15] 11 is a perspective view showing a procedure for attaching and detaching the cup holder and the outside air filter. FIG. [Figure 16] 11 is a perspective view showing a procedure for attaching and detaching the cup holder and the outside air filter. FIG. [Figure 17] 11 is a perspective view showing a procedure for attaching and detaching the cup holder and the outside air filter. FIG. [Figure 18] 11 is a perspective view showing a procedure for attaching and detaching the cup holder and the outside air filter. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0024] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Note that the following description of the preferred embodiment is merely illustrative in nature and is not intended to limit the present invention, its applications, or its uses.

[0025] In some drawings, directions are indicated by arrows, with the direction of travel of the lower traveling body being the front-rear direction, the left-right direction as seen from the driver's seat being the left-right direction, and the up-down direction of the lower traveling body being the up-down direction. For convenience, when explaining the configuration of the cab's walls, the left-right direction is described as the direction toward the interior and the wall as seen from inside the cab. Unless otherwise specified, the explanation will be given according to the directions indicated by these arrows, and the direction of the rotating upper rotating body is based on the state shown in Figure 1.

[0026] The construction machine 1 is, for example, a hydraulic excavator, and as shown in Fig. 1, includes a crawler-type lower traveling body 2 and an upper rotating body 3 that is rotatably mounted on the lower traveling body 2. An attachment 4, a cab 5, a counterweight 8, etc. are arranged on the upper rotating body 3.

[0027] As shown in Fig. 2, the upper rotating body 3 is provided with a bracket 7 approximately in the center of the front end. Although omitted in Fig. 2, the attachment 4 is supported by the bracket 7 so as to be swingable left and right. A machine room 6 is provided from approximately the center of the upper rotating body 3 to the right, and houses an engine, a hydraulic pump, and the like (not shown). A cab 5, which is a box-shaped operator's cabin into which an operator gets in, is provided from approximately the center of the upper rotating body to the left. In addition, a counterweight 8 is provided behind the cab 5 and the machine room 6.

[0028] Within the cab 5, a driver's seat 20 is installed on a floor surface 10, and the driver's seat 20 is surrounded by a wall surface 11 and a glass surface 12, separating it from the outside.

[0029] A travel lever 21 and a travel pedal 22 are provided in front of the driver's seat 20. The pair of left and right travel levers 21, 21 are levers that control the travel direction of the crawler, and extend upward from the floor surface 10 toward the driver's seat 20. The pair of left and right travel pedals 22, 22 are pedals that control the travel speed of the crawler, and are provided on the floor surface 10 so that the operator can step on them to operate them.

[0030] Control boxes 23a, 23b are provided on both the left and right sides of the driver's seat 20. The control boxes 23a, 23b have operation levers 24a, 24b, respectively, at the upper front sides. The operation levers 24a, 24b are used to operate the attachment 4.

[0031] 3, the cab 5 is provided with a front glass surface 12a in front of the driver's seat 20, a right glass surface 12b on the right side, and a door portion (not shown) with a glass surface on the left side, and these glass surfaces 12a and 12b ensure the operator's visibility. In addition, below the right glass surface 12b, a wall surface 11 that covers a console (not shown) and an air conditioning unit described below is provided. In this embodiment, the right control box 23a constitutes a part of the wall surface 11.

[0032] A plurality of air outlets 25 of the air conditioning unit are provided on the upper part of the wall surface 11, and a display 26 is installed in front of the operation lever 24a. As shown in FIG. 4, an air conditioning cover 30 facing the indoor side is provided below the display 26, and the air conditioning cover 30 is connected to the front side of the control box 23a on the right side, and constitutes the wall surface 11 together with the control box 23a. The air conditioning cover 30 is provided with air outlets 25 at two locations, one above and one below, and an article holder 50 is detachably attached between the air outlets 25, 25. The article holder 50 is a holder or a small container that can hold various articles, and the type is not particularly limited, but in this embodiment, for example, it is a cup holder 50 that can hold a drinking cup or a bottle.

[0033] FIG. 5 is a side view of the air conditioning cover 30 as seen from the inside of the cab 5. The air conditioning cover 30 has blow-out holes 31, 31 at the front upper and lower parts thereof through which air conditioned by the air conditioning unit is blown into the cab 5. The blow-out hole 31 is fitted with the blow-out part 25. An opening 32 is provided between the blow-out holes 31, 31. During maintenance, the outside air filter 41 can be removed from the inside of the vehicle through the opening 32. A support member 60 to which the cup holder 50 is attached and detached is attached to the opening 32 from the outside of the vehicle. The front end of the opening 32 has an engagement part 32a in which a substantially central part is cut out to the front and an edge part protrudes to the inside of the vehicle. The rear end of the opening 32 has a cut-out part 32b in which a substantially central part is cut out to the rear. The lower part of the air conditioning cover 30 has an inside air introduction hole 33 in the form of a slit for introducing inside air.

[0034] The support member 60 is a plate-shaped member, and as shown in Fig. 6, has a covering portion 61 that covers the opening 32, and a bottom plate portion 62 formed by bending the lower portion of the covering portion 61 toward the inside of the room. The covering portion 61 is provided with an insertion hole 61a through which the outside air filter 41 can be inserted. The bottom plate portion 62 supports the bottom of the cup holder 50. The bottom plate portion 62 supports the bottom of the cup holder 50, thereby preventing the cup holder 50 from falling off due to vibrations generated while the construction machine 1 is traveling or working.

[0035] Further, a notch 61b is formed in the approximate center of the rear end portion of the support member 60. This notch 61b, together with a notch 32b provided in the opening 32, forms an insertion hole into which an insertion piece 57 of a cup holder 50 (described later) is inserted.

[0036] Except during maintenance of the outside air filter 41, the opening 32 is covered by the cup holder 50. When the cup holder 50 is removed, the end of the outside air filter 41 becomes visible through the opening 32 and the insertion hole 61a, as shown in FIG.

[0037] As shown in FIG. 8, an air conditioning unit 40 is provided inside the wall surface 11, and an air conditioning cover 30 which is a part of the wall surface 11 covers the air conditioning unit 40 from the interior side of the cab 5.

[0038] The air conditioning unit 40 has an outside air filter 41 for drawing in outside air. The air conditioning unit draws in inside air through the inside air filter 43 installed in the inside air inlet 33, and draws in outside air through the outside air filter 41. The drawn-in inside air and outside air are temperature-adjusted by a heat exchanger (not shown), and are blown toward the indoor side from a plurality of blowing sections 25 provided on the upper and side portions of the wall surface 11.

[0039] The outside air filter 41 is a plate-shaped filter member extending in the left-right direction, its outer periphery covered by a duct 42, and held within the wall surface 11. The outside air filter 41 is provided at its indoor end with a handle portion 41a that protrudes from within the wall surface 11 to the indoor side. During maintenance, a worker can remove and install the outside air filter 41 by grasping the handle portion 41a and sliding it in the left-right direction.

[0040] The outdoor air filter 41 can be removed from the indoor side through the opening 32 provided in the air conditioning cover 30 and the insertion hole 61a provided in the support member 60. The opening 32 is formed larger than the indoor end of the duct 42 that holds the outdoor air filter 41, but the insertion hole 61a is larger than the outdoor air filter 41 and smaller than the indoor end of the duct 42. As shown in FIG. 8, the outdoor side surface of the covering part 61 can abut against the indoor end of the duct 42, so the support member 60 plays the role of a stopper for the duct 42. In addition, in order to stably fix the duct 42, it is preferable that the outdoor side surface of the covering part 61 and the indoor end of the duct 42 are in surface contact. With this configuration, even if the outdoor air filter 41 is pulled out to the indoor side, the duct 42 is not pulled out together, making maintenance easy.

[0041] Next, the cup holder 50 will be described in detail. As shown in Fig. 9 and Fig. 10, the cup holder 50 is a substantially cylindrical holder having a bottom 51, into which a drinking cup or the like is inserted from the top and held. When the cup storage section 52 is viewed from above, the indoor side wall section 52a protruding into the indoor side is formed in a substantially arc shape, and the wall surface side wall section 52b is formed in a substantially straight line along the wall surface 11, forming a substantially semicircular arc shape. The indoor side wall section 52a has a cutout section 53 that opens upward at the indoor end, so that the handle of a mug or the like can be inserted into the cutout section 53.

[0042] The wall surface side wall portion 52b has two support pieces 54, 54 that extend toward the wall surface at an interval in the front-rear direction. As shown in Fig. 8, the support pieces 54, 54 abut against the covering portion 61 when attached to the wall surface 11, thereby enhancing the stability of the cup holder 50. The support pieces 54, 54 have slits 54a formed on the opposing surfaces from the wall surface end toward the interior side of the vehicle. The wall surface side wall portion 52b also has an elastic member 70 that extends from the wall surface side toward the interior side of the vehicle.

[0043] The elastic member 70 is formed of, for example, a sheet rubber, and has a wall surface end 70a extending in the front-rear direction and a generally T-shaped shape in plan view extending from the approximate center of the wall surface end 70a toward the interior side. The elastic member 70 has both front and rear ends guided by the slit 54a of the support piece 54, and is inserted into an insertion hole provided in the approximate center of the wall surface side wall portion 52b to extend from the wall surface side to the interior side. Since the wall surface end 70a extends slightly to the wall surface side beyond the interior side end of the handle portion 41a of the outside air filter 41, the handle portion 41a can be pressed toward the wall surface to fix the cup holder 50 and prevent rattling. In addition, when a cup or the like is placed in the cup holder 50, the interior side end of the elastic member 70 can press the cup or the like toward the interior side to fix the cup or the like.

[0044] In addition, the wall surface side end of the indoor side wall portion 52a, the wall surface side end of the bottom portion 51, and the upper end of the wall surface side wall portion 52b of the cup holder 50 extend toward the wall surface side from the wall surface side wall portion 52b to form a frame-shaped extension portion 55. As shown in Fig. 11, the indoor side end of the outside air filter 41 protruding from the wall surface 11 to the indoor side is stored in the space formed by this extension portion 55.

[0045] The front end of the extension 55 is formed with an attachment / detachment operation part 56. The attachment / detachment operation part 56 is an elastically deformable locking claw that extends from the extension 55 toward the wall surface and is folded back toward the interior side of the room. The attachment / detachment operation part 56 has a protrusion 56a that protrudes toward the front side, and the protrusion 56a is engaged with the wall surface side of the opening 32 to prevent it from falling off. The attachment / detachment operation part 56 has a plurality of ribs 56b for reinforcement on the inside of the folded back part. In addition, the end of the attachment / detachment operation part 56 extends forward, and an operation knob 56c is formed.

[0046] An insertion piece 57 is formed at the rear end of the extension 55. The insertion piece 57 extends from the extension 55 toward the wall surface side, and the wall surface side end is bent toward the rear side. The insertion piece 57 is inserted into an insertion hole formed by the notch 61b provided in the support member 60 and the notch 32b provided in the opening 32, and the attachment / detachment operation part 56 is engaged with the engagement part 32a of the opening 32, so that the cup holder 50 can be attached to the opening 32. If the attachment / detachment operation part 56 that engages with the opening 32 is provided at the front end of the cup holder 50 far from the driver's seat 20, it is possible to prevent the operator at the driver's seat 20 from accidentally touching the attachment / detachment operation part 56 and causing the cup holder 50 to fall off.

[0047] As shown in Fig. 12, a guide portion 51a is provided at the bottom of cup holder 50 to guide bottom plate portion 62 of support member 60. Guide portion 51a is a U-shaped rib that opens on the wall surface side, and its front portion is inclined backward from the wall surface side toward the interior side of the room. When attaching cup holder 50, rear insertion piece 57 is inserted into opening 32, and then when front attachment / detachment operation portion 56 is engaged with engagement portion 32a, bottom plate portion 62 is guided by guide portion 51a, making attachment easy.

[0048] Next, the procedure for removing and attaching the cup holder 50 when performing maintenance on the outside air filter 41 will be described with reference to FIGS.

[0049] As shown in Fig. 13, cup holder 50 is attached to opening 32 except during maintenance, and outside air filter 41 inside opening 32 cannot be seen from the inside of the room. When removing cup holder 50 during maintenance, first, front operation knob 56c is pushed backward to elastically deform attachment / detachment operation part 56, and the engagement with engagement part 32a is released as shown in Fig. 14. Next, rear insertion piece 57 is pulled out from the insertion hole formed by support member 60 and notches 61b, 32b provided in opening 32, and cup holder 50 can be removed.

[0050] When the cup holder 50 is removed, the outside air filter 41 can be seen through the opening 32 and the insertion hole 61a, as shown in Fig. 15. The outside air filter 41 is grasped by the handle portion 41a and pulled out toward the inside of the room to remove it, as shown in Fig. 16.

[0051] When returning the outside air filter 41 to the air conditioning cover 30 after replacing or cleaning the outside air filter 41, the outside air filter 41 is inserted into the insertion hole 61a of the support member 60 as shown in FIG.

[0052] Next, insert piece 57 of cup holder 50 is inserted into the insertion hole formed by support member 60 and cutout portions 61b, 32b provided in opening 32, and then, as shown in Figure 18, attachment / detachment operating portion 56 is pushed into engagement portion 32a to engage it, so that opening 32 is covered by cup holder 50, resulting in a good-looking state in which outdoor air filter 41 is not visible.

[0053] In the construction machine of this embodiment configured as described above, the outside air filter 41 can be attached and detached from the inside of the cab 5, making maintenance easy. In addition, the opening 32 for removing the outside air filter 41 is covered by a cup holder 50. By having the cup holder 50 act as a lid for the opening 32, the outside air filter 41 is not visible to the worker, making it possible to achieve both good appearance and convenience inside the cab 5. In addition, because the cup holder 50 is detachable, cleaning is easy.

[0054] In this embodiment, opening 32 is provided in front of driver's seat 20, but it may be provided in any position that is easy to handle from driver's seat 20, or on the side of driver's seat 20. Although the front and side of driver's seat 20 are positions that are easily noticeable, opening 32 is covered by cup holder 50, so that convenience and appearance can be compatible. [Explanation of symbols]

[0055] 1. Construction machinery 2 Undercarriage 3. Upper rotating body 4 Attachment 5 Cab 11 Wall 20 Driver's seat 30 Air conditioning cover 31 Blowout hole 32 Opening 32a Engagement part 32b Cutout 40 Air Conditioning Unit 41 Fresh air filter 41a Handle 42 Duct 50 Cup holder 54 Support piece 56 Attachment / detachment operation section 57 Insert 60 Support member 61 Covering part 61a Insertion hole 61b Cutout 62 Bottom plate part 70 Elastic member

Claims

1. A cab for a construction machine, A driver's seat disposed within the cab; A wall surface covering the driver's seat; an air conditioning unit provided within the wall surface and having an outside air filter for intake of outside air; the wall surface has an opening through which the outside air filter can be inserted, and a blowout hole provided at a position separated from the opening and through which air of the air conditioning unit is blown out, The outside air filter is configured to be removable from the indoor side through the opening provided in the wall surface, and the opening is covered by a support member and an article holder that is detachable from the support member. A cab for a construction machine, characterized in that the support member has a covering portion which covers the opening and an insertion hole provided in the covering portion through which the outside air filter can be inserted.

2. 2. The cab for a construction machine according to claim 1, wherein a bottom plate portion for supporting a bottom portion of the article holder is formed on a lower portion of the covering portion.

3. 3. The cab of a construction machine according to claim 2, wherein the opening is provided to the side or in front of the driver's seat, and the outside air filter is configured to be removable by being pulled out in the left-right direction.

4. 4. The cab for a construction machine according to claim 3, wherein the article holder has an attachment / detachment operating portion at a front end portion thereof which is attachable to and detachable from the opening, and the attachment / detachment operating portion is engaged with the opening.

5. The article holder includes an elastic member extending from the wall surface side toward the interior side of the room, A cab for a construction machine as described in any one of claims 1 to 4, characterized in that the elastic member has a wall side end pressing the end of the outside air filter toward the wall side, and when an item is placed in the item holder, the interior side end pressing the item toward the interior side.

Images