JP7478273B2 - cabin - Google Patents

Description

The present invention relates to a cabin mounted on the body of a work machine such as a tractor, wheel loader, or backhoe.

A cabin disclosed in Patent Document 1 is known.

The cabin disclosed in Patent Document 1 has a front pillar provided at the front of the side of the cabin, a rear pillar provided at the rear of the side, and a center pillar provided between the front pillar and the rear pillar. In addition, the cabin has a boarding door provided between the front pillar and the center pillar, and an openable quarter glass provided between the center pillar and the rear pillar.

JP 2012-129667 A

The vehicle disclosed in Patent Document 1 can ventilate the cabin interior using quarter glass, but in order to provide the quarter glass, a center pillar for attaching the door hinge must be provided on the operator's side, and this center pillar reduces visibility to the side of the cabin.

Therefore, in consideration of the above problems, the present invention aims to improve visibility to the sides of the cabin.

A cabin according to one aspect of the present invention is a cabin mounted on an aircraft, the cabin comprising: a rear pillar provided at the rear of a side of the cabin, formed hollow, and having an exterior opening for taking in outside air, which is the air outside the cabin, inside the cabin; a door supported on the rear pillar to open and close an entrance to the cabin; and a lid operating mechanism , the rear pillar having a first portion against which the door abuts via a sealing material, and a second portion extending from the first portion outward in the width direction of the cabin, facing the forward side, and having the exterior opening provided therein, the rear pillar further having an interior opening connecting the inside of the rear pillar to the interior of the cabin, a lid that can swing between a closed position that blocks the interior opening and an open position that opens the interior opening, and a biasing member for biasing the lid in a direction from the open position to the closed position to bring the lid into the closed position, the lid operating mechanism being capable of operating the lid from the closed position to the open position against the biasing force of the biasing member and holding it in the open position.

The second section is formed in an inclined shape that transitions rearward from the rear edge of the first section toward the outside in the width direction.

The rear pillar has a member in which the exterior opening is formed and which is fitted and fixed to the second portion.

The cabin includes a first door hinge attached to an upper portion of the rear pillar and supporting the door, and a second door hinge attached to a lower portion of the rear pillar and supporting the door, and the exterior opening is provided between the first door hinge and the second door hinge.

The rear pillar has a first communication opening and a second communication opening that are different from the exterior opening and connect the inside of the rear pillar to the outside of the cabin, the first communication opening is provided in a portion corresponding to the first door hinge, and the second communication opening is provided in a portion corresponding to the second door hinge.

The lid operating mechanism allows the lid to swing when the operation of the lid is not being performed.

The rear pillar has an outside air inlet that connects the interior of the rear pillar to the interior of the roof of the cabin.

With the above configuration, outside air can be drawn into the cabin from the exterior opening through the interior of the pillar and the interior opening. Because the rear pillar is provided with a ventilation function, there is no need to use the quarter glass as a ventilation component. And because there is no need to provide a center pillar for the quarter glass, visibility to the sides of the cabin can be improved.

FIG. FIG. FIG. 2 is a side view of the cabin frame. FIG. FIG. 2 is a plan view of the cabin frame. FIG. 4 is a rear view of the cabin frame. FIG. FIG. 2 is a perspective view of the rear pillar as viewed from outside the cabin. FIG. 2 is a side view of the rear pillar as seen from inside the cabin. 4 is a cross-sectional view taken along line Z1-Z1 of FIG. 3. 4 is a cross-sectional view taken along line Z2-Z2 of FIG. 3. 4 is a cross-sectional view taken along line Z3-Z3 in FIG. 3. FIG. 2 is a vertical cross-sectional view of an outside air intake portion of a rear pillar. FIG. 4 is a side view of the indoor opening and the lid body. 4 is a schematic diagram showing an opening and closing mechanism of the lid body. FIG. 4 is a side view showing the opening and closing mechanism of the outside air inlet. FIG. FIG. FIG. FIG. 2 is a side cross-sectional view of the roof cut at the center in the width direction. 4 is a rear cross-sectional view of the roof taken along the center side in the front-rear direction. FIG. FIG. 4 is a side cross-sectional view of a second resonance tube. FIG. 4 is a side view of the third resonance tube. FIG. 2 is a side view of the upper part of the cabin frame. FIG. 2 is a plan view of the upper part of the cabin frame. FIG. 4 is a rear cross-sectional view of the mid-front/rear portion of the cabin frame. 4 is a perspective view of a corner portion between the front upper frame and the side upper frame. FIG. 4 is a perspective view of a corner portion between the rear upper frame and the side upper frame. FIG.

One embodiment of the present invention will be described below with reference to the drawings as appropriate.

Figure 1 is a schematic side view showing a tractor 2 having a cabin 1 according to this embodiment. In this embodiment, a tractor 2 is shown as an example of a work machine (vehicle) on which the cabin 1 is mounted, but the work machine may be a wheel loader, a backhoe, or another work machine.

In this embodiment, the direction of arrow A1 in FIG. 1 (the forward direction of the tractor 2) is described as the front, the direction of arrow A2 in FIG. 1 (the backward direction of the tractor 2) is described as the rear, and the direction of arrow A3 in FIG. 1 is described as the front-rear direction. Therefore, the front side of FIG. 1 is the left side, and the back side of FIG. 1 is the right side. The horizontal direction perpendicular to the front-rear direction A3 is described as the width direction. The direction from the center of the width of the tractor 2 to the right or left side is described as the width direction outward. In other words, the width direction outward is the width direction away from the center of the tractor 2. The opposite direction to the width direction outward is described as the width direction inward. In other words, the width direction inward is the width direction toward the center of the tractor 2.

As shown in FIG. 1, the tractor 2 has a vehicle body 3 that can run. The vehicle body 3 has a prime mover E1 and a transmission case 4.

The prime mover E1 is a diesel engine. The prime mover E1 is located at the front of the tractor 2 and is covered by the bonnet 10. The prime mover E1 may be an electric motor, or may be a hybrid type having a diesel engine and an electric motor. The bonnet 10 is formed in a curved shape with the upper surface protruding slightly upward.

The transmission case 4 is formed by directly connecting, for example, a flywheel housing that accommodates a flywheel, a clutch housing that accommodates a clutch that intermittently transmits the power of the prime mover E1 transmitted via the flywheel, and a transmission case that accommodates a transmission that changes the speed of the power transmitted via the clutch.

As shown in FIG. 1, the tractor 2 has a traveling device 5 that supports the machine body 3 so that it can travel. The traveling device 5 is exemplified as a wheel-type traveling device 5 having a number of front wheels 11L, 11R provided at the front of the machine body 3 and a number of rear wheels 12L, 12R provided at the rear of the machine body 3.

As shown in FIG. 1, the cabin 1 is mounted at the rear of the machine body 3. A driver's seat 6 where an operator sits is provided at the rear of the cabin 1 (referred to as the cabin interior). A steering handle 7 for steering the front wheels 11L, 11R, for example, is provided in front of the driver's seat 6.

As shown in FIG. 1, the cabin 1 has a cabin frame 8 that forms a framework. A roof 9 is provided on the upper part of the cabin frame 8. As shown in FIG. 2, the cabin frame 8 of this embodiment is a four-pillar cabin frame that does not have a center pillar (quarter pillar).

As shown in Figures 2 and 4, the cabin frame 8 has a left front pillar (also called the first front pillar) 13L and a right front pillar (also called the second front pillar) 13R at the front. In other words, the cabin frame 8 has the first front pillar 13L and the second front pillar 13R arranged side by side with a gap in the width direction. The first front pillar 13L is provided at the front of the left side of the cabin 1. The second front pillar 13R is provided at the front of the right side of the cabin 1. The upper parts of the first front pillar 13L and the second front pillar 13R are connected to each other by the front upper frame 15.

The first front pillar 13L and the second front pillar 13R are collectively referred to as the front pillars 13.

2 and 6, the cabin frame 8 has a left rear pillar (also called the first rear pillar) 14L and a right rear pillar (also called the second rear pillar) 14R at the rear. In other words, the cabin frame 8 has the first rear pillar 14L and the second rear pillar 14R arranged side by side with a gap in the width direction. The first rear pillar 14L is provided at the rear of the left side of the cabin 1. The second rear pillar 14R is provided at the rear of the right side of the cabin 1. The first rear pillar 14L is disposed behind the first front pillar 13L, and the second rear pillar 14R is disposed behind the second front pillar 13R. The upper parts of the first rear pillar 14L and the second rear pillar 14R are connected to each other by the rear upper frame 16. The lower parts of the first rear pillar 14L and the second rear pillar 14R are connected to each other by the rear lower frame 17.

The first rear pillar 14L and the second rear pillar 14R are collectively referred to as the rear pillar 14.

As shown in Figures 2 and 3, the cabin frame 8 has a left side upper frame (also called the first side upper frame) 18L that connects the upper parts of the first front pillar 13L and the first rear pillar 14L, and a right side upper frame (also called the second side upper frame 18) 18R that connects the upper parts of the second front pillar 13R and the second rear pillar 14R.

The first side upper frame 18L and the second side upper frame 18R are collectively referred to as the side upper frame 18.

As shown in Figures 2 and 3, a left side lower frame (referred to as the first side lower frame) 19L is connected to the lower part of the first rear pillar 14L. The first side lower frame 19L extends from the lower part of the first rear pillar 14L so as to transition downward as it goes forward, and its lower end is connected to the lower end of the first front pillar 13L by a left connecting frame (referred to as the first connecting frame) 20L. As shown in Figure 2, a right side lower frame (referred to as the second side lower frame) 19R is connected to the lower part of the second rear pillar 14R. The second side lower frame 19R extends from the lower part of the second rear pillar 14R so as to transition downward as it goes forward, and its lower end is connected to the lower end of the second front pillar 13R by a right connecting frame (referred to as the second connecting frame) 20R.

The first side lower frame 19L and the second side lower frame 19R are collectively referred to as the side lower frame 19, and the first connecting frame 20L and the second connecting frame 20R are collectively referred to as the connecting frame.

As shown in FIG. 2, a rear wheel fender 21 that covers the rear wheels 12L and 12R is fixed to the lower surface of the side lower frame 19 and the lower end of the rear pillar 14.

As shown in FIG. 2, a floor sheet 22 is provided between the left and right rear wheel fenders 21. As shown in FIG. 7, the front part of the floor sheet 22 is located below the driver's seat 6, and the driver's seat 6 is attached on the floor sheet 22. The rear part of the floor sheet 22 extends rearward and upward, and is located on the back side of the driver's seat 6. A step 23 that forms a floor extends forward from the front lower end of the floor sheet 22. The roof 9 is also formed hollow. More specifically, the roof 9 has an inner roof 24 that forms the ceiling part of the cabin interior, and an outer roof 25 that forms the upper wall of the roof 9, and the space between the inner roof 24 and the outer roof 25 is formed hollow. An air conditioner (air conditioning device) 26 that adjusts the air inside the cabin is provided at the rear of the interior of the roof 9. The air conditioner 26 is mounted on the rear upper frame 16.

As shown in FIG. 1, a door 27 is provided on the left and right side of the cabin 1 to close an entrance 28 surrounded by the front pillar 13, the side upper frame 18, the rear pillar 14, the side lower frame 19, and the connecting frame 20. In detail, the door 27 is provided between the front pillar 13 and the rear pillar 14, and is supported by the rear pillar 14 via a first door hinge 29 and a second door hinge 30 so that the door 27 can be opened and closed. The first door hinge 29 is attached to the upper part of the rear pillar 14, and the second door hinge 30 is attached to the lower part of the rear pillar 14. The door 27 is formed of a light-transmitting panel such as transparent glass.

A front panel 31 is provided on the front side of the cabin frame 8 from the first front pillar 13L to the second front pillar 13R (see FIG. 7). A rear panel 32 is provided on the rear side of the cabin frame 8 from the first rear pillar 14L to the second rear pillar 14R (see FIG. 7). The front panel 31 and the rear panel 32 are formed of a light-transmitting panel such as transparent glass. The front panel 31 is fixed to the first front pillar 13L, the second front pillar 13R, the front upper frame 15, etc., and the upper part of the rear panel 32 is attached to the rear upper frame 16 via a hinge so as to be rotatable around an axis extending in the width direction.

Next, the configuration of the rear pillar 14 will be described in detail.

The first rear pillar 14L and the second rear pillar 14R are formed symmetrically with respect to a vertical plane that passes through the center of the cabin 1 in the width direction and is perpendicular to the width direction, so the first rear pillar 14L and the second rear pillar 14R will be described together.

As shown in Figures 8 to 12, the rear pillar 14 has a first member 33, a second member 34, a third member 35, a fourth member 36, and a fifth member 37. As shown in Figures 10 to 12, the rear pillar 14 is formed hollow and surrounded by the first member 33 to the fifth member 37. The interior of the rear pillar 14 is called the pillar interior 38.

8, the first member 33 has an outer wall portion 39 that constitutes the outer surface of the rear pillar 14. The outer wall portion 39 has a first portion 41, a second portion 42, a third portion 43, a fourth portion 44, and a fifth portion 45. The first portion 41 constitutes the front portion of the outer wall portion 39. This first portion 41 is a door abutment portion (hereinafter referred to as the door abutment portion) with which the door 27 abuts via a sealant. The door abutment portion 41 has an upper portion 41a, a lower portion 41b, and a middle portion 41c between the upper portion 41a and the lower portion 41b. The middle portion 41c is long in the vertical direction, with the upper portion protruding forward from the middle portion 41c, and the lower portion 41b also protruding forward from the middle portion 41c.

As shown in Figures 8 and 10, the second portion 42 extends outward in the width direction from the rear edge of the door abutment portion 41 and faces the front side. More specifically, the second portion 42 is formed in an inclined shape that transitions rearward as it extends outward in the width direction from the rear edge of the door abutment portion 41.

As shown in Figures 10 to 13, the second portion 42 has a first insertion hole 46, a second insertion hole 47, and a third insertion hole 48 formed through the second portion 42. The first insertion hole 46 is formed in the upper portion of the second portion 42, the second insertion hole 47 is formed in the lower portion of the second portion 42, and the third insertion hole 48 is formed in the middle portion of the second portion 42 in the vertical direction. This second portion 42 is a mounting wall portion to which the second member 34 is attached.

As shown in FIG. 8, the third portion 43 extends rearward from the rear edge of the second portion 42. The third portion 43 has an upper portion 43a, a lower portion 43b, and an intermediate portion 43c between the upper portion 43a and the lower portion 43b. The upper portion 43a and the lower portion 43b are recessed inward in the width direction from the intermediate portion 43c, and a first tubular portion 49 to which the first door hinge 29 is attached is fixed to the rear portion (recessed portion) of the upper portion 43a, and a second tubular portion 50 to which the second door hinge 30 is attached is fixed to the rear portion (recessed portion) of the lower portion 43b.

As shown in FIG. 8, the fourth portion 44 extends inward in the width direction from the upper edge of the third portion 43. The fifth portion 45 extends upward from the edge of the fourth portion 44 on the inner side in the width direction.

As shown in FIG. 8, the first member 33 has a front wall portion 51 that constitutes the front side of the rear pillar 14. The front wall portion 51 has an upper portion 51a, a lower portion 51b, and a middle portion 51c between the upper portion 51a and the lower portion 51b. The upper portion 51a extends inward in the width direction from the lower edge of the upper portion 41a of the door abutment portion 41. The lower portion 51b extends inward in the width direction from the upper edge of the lower portion 41b of the door abutment portion 41. The middle portion 51c extends inward in the width direction from the front edge of the middle portion 41c of the door abutment portion 41.

As shown in Figures 9 to 12, the first member 33 has a rear wall portion 52 that constitutes the rear side of the rear pillar 14. The rear wall portion 52 extends widthwise inward from the third portion 43 and the fifth portion 45. A panel abutment portion 52a is formed on the widthwise outer side of the rear wall portion 52, against which the rear panel 32 abuts via a sealant.

8, 10 to 12, the second member 34 is fitted into the second portion 42 of the outer wall portion 39 and fixed to the second portion 42. More specifically, the second member 34 has an abutting wall (opening forming portion) 34a that abuts against the front surface of the second portion 42. An exterior opening 55 that connects the pillar interior 38 to the outside of the cabin 1 (referred to as the outside of the cabin) is formed in the middle of the abutting wall 34a in the vertical direction. This exterior opening 55 allows outside air (air outside the cabin) to be taken into the pillar interior 38. In addition, since the abutting wall (opening forming portion) 34a of the second member 34 faces the front side, outside air can be efficiently taken into the pillar interior 38 by running the tractor 2. Furthermore, since the abutting wall 34a is formed in an inclined shape that transitions rearward as it moves outward in the width direction, the visibility to the rear side as seen from the driver's seat 6 is good.

As shown in FIG. 8, the abutment wall 34a has a first communication opening 53 formed above the exterior opening 55 and a second communication opening 54 formed below the exterior opening 55. The first communication opening 53 and the second communication opening 54 communicate the pillar interior 38 with the outside of the cabin. By providing the first communication opening 53 and the second communication opening 54, the amount of outside air that can be introduced into the pillar interior 38 can be increased.

As shown in FIG. 13, the first communication opening 53 is formed at a position corresponding to the first insertion hole 46, the second communication opening 54 is formed at a position corresponding to the second insertion hole 47, and the outdoor opening 55 is formed at a position corresponding to the third insertion hole 48.

As shown in FIG. 8, the first communication opening 53 is formed in the upper part of the abutment wall 34a, and is formed in a part corresponding to the upper part 43a of the third part 43. Therefore, the first communication opening 53 is provided in a part corresponding to the first door hinge 29 (part covered by the first door hinge 29). As shown in FIG. 11 and FIG. 13, a cylindrical first guide wall 34b is provided around the first communication opening 53, extending through the first insertion hole 46 into the pillar interior 38.

As shown in FIG. 8, the second communication opening 54 is formed in the lower part of the abutment wall 34a.
The second communication opening 54 is formed in a portion corresponding to the lower portion 43b of the portion 43. Therefore, the second communication opening 54 is provided in a portion corresponding to the second door hinge 30 (a portion covered by the second door hinge 30). As shown in Figures 12 and 13, a cylindrical second guide wall 34c extending through the second insertion hole 47 into the pillar interior 38 is provided around the second communication opening 54.

The first communication opening 53 corresponds to the first door hinge 29, and the second communication opening 54 corresponds to the second door hinge 30, which has the effect of preventing water such as car wash water or rainwater from entering the pillar interior 38 through the first communication opening 53 and the second communication opening 54.

As shown in FIG. 8, the exterior opening 55 is formed between the first communication opening 53 and the second communication opening 54, and is therefore provided between the first door hinge 29 and the second door hinge 30.

As shown in Figures 10 and 13, a cylindrical third guide wall 34d is provided around the exterior opening 55, extending through the third insertion hole 48 into the pillar interior 38. A plurality of louver walls 56 are provided in the third guide wall 34d, spaced apart in the vertical direction. Each louver wall 56 is formed in an inclined shape that slopes downward as it moves from the outside of the cabin toward the pillar interior 38, and is fixed to the third guide wall 34d. Vertically adjacent louver walls 56 overlap when viewed from the front. The louver walls 56 have the effect of making it difficult for water, such as car wash water or rainwater, to enter the pillar interior 38 through the exterior opening 55.

As shown in FIG. 9, the third member 35 is located inside the cabin and is formed from the upper end to the lower end of the first member 33. As shown in FIGS. 10 to 12, the third member 35 has an inner wall portion 57 facing inward in the width direction, and a front wall portion 58 extending outward in the width direction from the front edge of the inner wall portion 57.

9 and 14, the interior wall portion 57 is formed with an interior opening 59 that connects the pillar interior 38 to the cabin interior. More specifically, the interior opening 59 is formed by penetrating the interior wall portion 57 and is formed from the upper to lower part of the inner wall portion 57. Outside air taken into the pillar interior 38 through the exterior opening 55 can be taken into the cabin interior through the interior opening 59. In other words, the rear pillar 14 has a ventilation function. This allows ventilation inside the cabin interior without providing an openable quarter glass. In addition, a four-pillar cabin frame 8 without a center pillar can be adopted, improving the visibility to the sides of the cabin 1.

As shown in FIG. 11, the upper end of the front wall portion 58 on the outer width direction side is connected to the upper portion 41a of the door abutment portion 41. As shown in FIG. 12, the lower end of the front wall portion 58 on the outer width direction side is connected to the lower portion 41b of the door abutment portion 41. As shown in FIG. 10, the middle portion of the front wall portion 58 is connected to the front wall portion 51 of the first member 33.

As shown in Figures 10 to 12 and 14, a lid 60 that can open and close the interior opening 59 is provided on the pillar interior 38 side of the inner wall 57. The front end of the lid 60 is pivoted to the inner wall 57 via a pivot 61 or the like, making it openable and closable. The pivot 61 is disposed along the front edge of the interior opening 59 on the pillar interior 38. The pivot 61 is formed from a round bar material that is formed to a length that spans from the top to the bottom of the lid 60.

As shown in FIG. 14, the upper part of the pivot 61 is supported by the first support part 62, and the lower part is supported by the second support part 63. In detail, as shown in FIG. 11, the first support part 62 is disposed on the upper front edge side of the indoor opening 59 and fixed to the inner wall part 57, and has a cylindrical part 62a through which the pivot 61 is inserted so as to be rotatable about its axis. As shown in FIG. 12, the second support part 63 is disposed on the lower front edge side of the indoor opening 59 and fixed to the inner wall part 57, and has a cylindrical part 63a through which the pivot 61 is inserted so as to be rotatable about its axis.

As shown in FIG. 15, the cover 60 can be swung between a closed position X1 (shown by a solid line) that closes the interior opening 59 and an open position X2 (shown by a two-dot chain line) that swings from the closed position X1 toward the pillar interior 38 to open the interior opening 59.

9, 14, and 15, a restricting wall 64 that restricts the swinging of the lid body 60 toward the cabin interior when in the closed position X1 is provided on the cabin interior side of the inner wall portion 57. The restricting wall 64 is formed of a plate material and is attached to the inner wall portion 57 with bolts or the like. Also, as shown in FIG. 9, the restricting wall 64 is provided with an opening 64a that is slightly smaller than the cabin interior opening 59 and is formed to a size corresponding to the cabin interior opening 59. When the lid body 60 is swung to the open position X2 that opens the cabin interior opening 59, the cabin interior opening 59 communicates with the cabin interior via the opening 64a.

As shown in FIG. 15, a cover operation mechanism 65 is provided for operating the cover 60. The cover operation mechanism 65 can operate the cover 60 from the closed position X1 to the open position X2 and can hold the cover 60 in the open position X2. To explain in detail, the cover operation mechanism 65 has an operation lever 65A and an operation wire 65B. The operation lever 65A is provided near the driver's seat 6 and is supported by a lever shaft 65C so as to be rotatable. One end of the operation wire 65B is connected to an arm portion 65D that rotates together with the operation lever 65A. A locking device 65E is connected to the other end of the operation wire 65B. The locking device 65E engages with a locking portion 65F fixed to the cover 60. When the operation lever 65A is rotated from a first position X3 shown by a solid line to a second position X4 shown by a virtual line, the operation wire 65B is pulled and the cover 60 swings from the closed position X1 to the open position X2. By holding the operating lever 65A in the second position X4, the lid 60 is held in the open position X2. Note that the lid operating mechanism 65 is not limited to the disclosed mechanism.

As shown in Figures 14 and 15, a biasing member 66 is provided at the middle of the pivot 61 to bias the lid 60 in a direction from the open position X2 to the closed position X1 (the direction of the arrow Y1 in Figure 15). The biasing member 66 has a coil portion fitted to the pivot 61, and is formed by a torsion coil spring with one end abutting the lid 60 and the other end abutting the inner wall portion 57. The lid 60 can be swung in the open side (the direction of the arrow Y2 in Figure 15) against the biasing force of the biasing member 66 by bending the operating wire 65B or by the relative movement of the locking portion 65F with respect to the locking device 65E.

As shown in FIG. 15, when ventilation is not performed, the lid body 60 is placed in the closed position X1 and the interior opening 59 is closed. In this state, when the door 27 is closed from an open state, if the internal pressure inside the cabin increases, the lid body 60 is pushed by the internal pressure F1 and swings to the opening side (in the direction of the arrow Y2) against the biasing force of the biasing member 66. This allows air to be bled from inside the cabin, and the door 27 of the cabin 1, which has a high level of airtightness inside, can be closed smoothly.

As shown in FIG. 9, the fourth member 36 is formed from the upper end to the lower end of the first member 33 and the third member 35. As shown in FIG. 10 to FIG. 12, the fourth member 36 has a partition wall 67 that divides the pillar interior 38 into front and rear. The partition wall 67 is provided between the outer wall portion 39 of the first member 33 and the rear portion of the inner wall portion 57 of the third member 35. As shown in FIG. 10 to FIG. 12, the front side of the partition wall 67 in the pillar interior 38 is a ventilation flow passage 68 that circulates outside air taken in from the outdoor opening 55, etc. to the indoor opening 59. The rear side of the partition wall 67 in the pillar interior 38 is an outside air introduction passage 69 that circulates outside air taken in from the outdoor opening 55 to the outside air introduction port 37a described later.

10 and 13, the partition wall 67 is formed with a circulation opening 67a that allows air to flow from the ventilation flow passage 68 to the outside air introduction passage 69. The circulation opening 67a is formed from the top to the bottom of the outdoor opening 55. The circulation opening 67a is also formed from one end side to the other end side in the width direction of the partition wall 67. An outdoor air filter 70 that removes dust in the outdoor air flowing from the outdoor opening 55 to the outdoor air introduction passage 69 is inserted into the circulation opening 67a. The outdoor air filter 70 is attached to the partition wall 67 via a mounting member 71 that has air permeability. Therefore, the outdoor air taken into the ventilation flow passage 68 from the outdoor opening 55 can flow through the outdoor air filter 70 to the outdoor air introduction passage 69.

As shown in Figures 10 to 12, the fourth member 36 has a side wall portion 72 extending from the partition wall 67 and a connecting wall 73 extending from the side wall portion 72. In detail, the side wall portion 72 extends rearward from the end portion on the inner side in the width direction of the partition wall 67, and closes the gap between the rear wall portion 52 of the first member 33 and the inner wall portion 57 of the third member 35. The connecting wall 73 extends outward in the width direction from the rear end of the side wall portion 72 and is connected to the rear wall portion 52 of the first member 33.

As shown in Fig. 8, the fifth member 37 is provided on the upper ends of the first member 33, the third member 35, and the fourth member 36, and constitutes an upper wall portion that is a wall portion at the upper end of the rear pillar 14. The fifth member 37 is referred to as an upper wall portion. As shown in Fig. 5, the upper wall portion of the first rear pillar 14L is referred to as a first upper wall portion 37L, and the upper wall portion of the second rear pillar 14R is referred to as a second upper wall portion 37R.

The upper wall portion 37 is integrally formed with the plate material forming the first member 33. The upper wall portion 37 also has an outside air inlet 37a that connects the pillar interior 38 (outside air inlet passage 69) to the inside of the roof 9. By driving the blower of the air conditioner unit 26, outside air taken into the outside air inlet passage 69 is introduced into the inside of the roof 9 through the outside air inlet 37a and taken into the air conditioner unit 26.

As shown in FIG. 16, the inner roof 24 is formed with a communication hole 74 that communicates with the outside air inlet 37a. The outside air inlet 37a communicates with the inside of the roof 9 through the communication hole 74. An opening/closing mechanism 75 that opens and closes the outside air inlet 37a is provided inside the roof 9. The opening/closing mechanism 75 has a support bracket 76, a lifting motor 77, an operating member 78, a lifting arm 79, and an opening/closing lid 80. The support bracket 76 is attached to the inner roof 24. The lifting motor 77 is attached to the support bracket 76. The operating member 78 is attached to the drive shaft 77a of the lifting motor 77 so as to be rotatable together with the drive shaft 77a. An engagement pin 78a is provided on one end of the operating member 78, and a pressing member 78b is provided on the other end. The lifting arm 79 is pivotally supported by a support shaft 81 at the midpoint of its longitudinal direction to the support bracket 76. A long hole 79a is formed on one end of the lift arm 79, and an engagement pin 78a is inserted through the long hole 79a. The other end of the lift arm 79 is interlocked with the opening/closing lid 80. In this opening/closing mechanism 75, when the drive shaft 77a of the lift motor 77 is rotated from the state shown by the solid line in FIG. 16, the operating member 78 rotates, and the one end of the lift arm 79 is pulled up by the engagement pin 78a. When the one end of the lift arm 79 is pulled up, the opening/closing lid 80 descends, and the outside air inlet 37a and the communication hole 74 are blocked, as shown by the solid line in FIG. 16. In this state, the pressing member 78b presses the lift arm 79.

In this embodiment, the first rear pillar 14L and the second rear pillar 14R are formed in the same structure, and the ventilation structure and the air conditioner outside air introduction structure are provided on both the first rear pillar 14L and the second rear pillar 14R, but the ventilation structure and the air conditioner outside air introduction structure may be provided on only one of the first rear pillar 14L or the second rear pillar 14R.

Incidentally, inside the cabin, there are "solid-borne noise" that is caused by vibrations from the engine E1 and the like propagating through mounts that support the cabin 1 in an anti-vibration manner, and "air-borne noise" that is propagated through the door 27, the front panel 31, the rear panel 32, and the like. This propagated noise causes so-called "boom noise" inside the cabin. As shown in FIG. 7, the cabin 1 of this embodiment has a resonator 86 (also called an air resonator or a noise canceller due to air resonance) that reduces the "boom noise" that occurs inside the cabin.

As shown in FIG. 7, the resonator 86 is provided on the inner roof 24. The resonator 86 is also provided above the driver's seat 6.

The inner roof 24 and outer roof 25 that constitute the roof 9 are formed from resin. The resonator 86 is integrally formed with the inner roof 24 by forming the inner roof 24 by blow molding or the like. That is, the resonator 86 is integrally molded with the inner roof 24 by the resin that forms the inner roof 24. Note that the resonator 86 may be integrally formed with the inner roof 24 by the resin that forms the inner roof 24 by forming the inner roof 24 by rotational molding or the like.

By forming the resonator 86 integrally with the inner roof 24, no additional parts are required to attach the inner roof 24, and the resonator 86 can be installed on the inner roof 24 in a space-saving manner without incurring additional costs.

17 and 18, the resonator 86 is provided on the central side in the width direction of the inner roof 24. The resonator 86 has at least one resonance tube 86A to 86C. In this embodiment, the resonator 86 includes a plurality of resonance tubes 86A to 86C of different lengths arranged side by side in the width direction of the cabin 1. Each of the resonance tubes 86A to 86C is formed in a cylindrical shape that is long in the front-rear direction A3 (having an axis in the front-rear direction A3), has a closed front end, and has an opening hole 87 at the rear end that opens into the cabin interior (downward).

The multiple resonance tubes include three resonance tubes: a first resonance tube 86A, a second resonance tube 86B, and a third resonance tube 86C. The first resonance tube 86A is located in the center of the width of the inner roof 24. The second resonance tube 86B is arranged to the left of the first resonance tube 86A with a gap between them. The third resonance tube 86C is arranged to the right of the first resonance tube 86A with a gap between them. The number of resonance tubes is not limited. That is, there may be one, two, or four or more.

As shown in Figures 17 and 18, the first resonance tube 86A, the second resonance tube 86B, and the third resonance tube 86C extend rearward from approximately the same position in the front-rear direction A3. That is, the opening holes 87 of each resonance tube 86A to 86C are arranged side by side in the width direction at the same position in the front-rear direction A. In terms of length, the first resonance tube 86A is the longest, and the second resonance tube 86B is slightly longer than the third resonance tube 86C.

As shown in FIG. 19, the first resonance tube 86A is formed into a cylindrical shape with a larger diameter at the front than at the rear. As shown in FIG. 21, the second resonance tube 86B is also formed into a cylindrical shape with a larger diameter at the front than at the rear. As shown in FIG. 22, the third resonance tube 86C is formed into a cylindrical shape with the same diameter from the front to the rear.

The resonator 86 (first resonance tube 86A to third resonance tube 86C) reflects the sound entering through the opening hole 87 off the internal wall surface, and the sound of the natural vibration of the resonator 86 coming out of the opening hole 87 is in antiphase with the sound inside the cabin, canceling out the high peak frequencies and reducing "booming noise." In addition, since the resonance point of the invading sound waves changes depending on the volume of the resonator 86 (resonance tube), providing multiple resonance tubes can reduce "booming noise" of different frequencies. Since the opening hole 87 of the resonator 86 is located near the operator's ear, it can reduce "booming noise" near the operator's ear.

As shown in Figures 19 and 20, the inner roof 24 has a downward-opening recess 88 formed by recessing the wall portion forming the inner roof 24 upward. The recess 88 has an upper wall 88b located above the edge of the opening 88a, and a rising wall portion 88c rising upward from the periphery of the edge of the opening 88a and connected to the upper wall 88b. The resonator 86 (first resonance tube 86A to third resonance tube 86C) is integrally formed with the upper wall 88b of the recess 88.

By forming the resonator 86 integrally with the upper wall 88b of the recess 88, it is possible to prevent the resonator 86 from narrowing the head clearance of the operator.

As shown in Figures 19 to 22, the upper part (upper half) of the resonator 86 protrudes upward from the upper wall 88b, and the lower part (lower half) protrudes downward from the upper wall 88b. That is, the resonator 86 protrudes upward and downward from the upper wall 88b of the recess 88. This prevents the resonator 86 from protruding downward from the opening 88a of the recess 88. By configuring the resonator 86 so that it does not protrude downward from the recess 88, head clearance for the operator can be ensured.

17 and 18, the inner roof 24 is integrally formed with a duct 89 for circulating the conditioned air blown out from the air conditioning unit 26. The duct 89 has a first duct portion 90, a second duct portion 91, and a third duct portion 92. The first duct portion 90 is located behind the recess 88 and connects to the air outlet 26a of the air conditioning unit 26. The second duct portion 91 has a rear portion extending diagonally forward and left from the left portion of the front portion of the first duct portion 90, and a middle portion extending forward on the left side of the recess 88. The front portion of the second duct portion 91 extends inward in the width direction in front of the recess 88. The third duct portion 92 has a rear portion extending diagonally forward and right from the right portion of the front portion of the first duct portion 90, and a middle portion extending forward on the right side of the recess 88. Additionally, the front portion of the third duct portion 92 extends widthwise inward in front of the recess 88.

By arranging multiple resonance tubes formed in the front-rear direction A3 in a line in the width direction, a resonator 86 including multiple resonance tubes that reduce noise at the operator's ears can be placed between the second duct section 91 and the third duct section 92.

A first blowing section 93A to a fourth blowing section 93D are provided on the cabin interior side of the inner roof 24, which blow out the conditioned air flowing inside the duct 89 into the cabin interior. The first blowing section 93A and the second blowing section 93B are disposed on the left side of the recess 88 and below the second duct section 91, and communicate with the second duct section 91. The third blowing section 93C and the fourth blowing section 93D are disposed on the right side of the recess 88 and below the third duct section 92, and communicate with the third duct section 92.

The recess 88 is tapered so that its width decreases toward the rear to match the shape of the rear of the second duct section 91 and the third duct section 92.

As shown in Figures 17 and 18, an inside air inlet 94 that connects the cabin interior to the inside of the roof 9 is formed on the left side of the rear of the inner roof 24. An inside air filter 95 is fitted into the inside air inlet 94. The inside air inlet 94 is closed from the inside of the roof 9 by an opening/closing lid (not shown) so that it can be opened and closed.

As shown in FIG. 17, the lower surface of the inner roof 24 is formed with the first groove 96A to the sixth groove 96F, which are open downward. The first groove 96A is formed in the front part of the inner roof 24 and extends in the width direction, and fits into the front upper frame 15 (see FIG. 19). The second groove 96B is formed in the rear part of the inner roof 24 and extends in the width direction, and fits into the rear upper frame 16 (see FIG. 19). The third groove 96C is formed by extending forward from the left end of the second groove 96B, and fits into the first side upper frame 18L and the first rear pillar 14L (see FIG. 20). The fourth groove 96D is formed by extending forward from the right end of the second groove 96B, and fits into the second side upper frame 18R and the second rear pillar 14R (see FIG. 20). The fifth groove 96E connects the left end of the first groove 96A to the front end of the third groove 96C. The sixth groove 96F connects the right end of the first groove 96A to the front end of the fourth groove 96D.

Sealing members are interposed between the first groove portion 96A to the sixth groove portion 96F and the front upper frame 15, the first side upper frame 18L and the second side upper frame 18R, the first rear pillar 14L and the second rear pillar 14R, and the rear upper frame 16. Therefore, the upper surfaces of the front upper frame 15, the first side upper frame 18L and the second side upper frame 18R, the first rear pillar 14L and the second rear pillar 14R, and the rear upper frame 16 are sealing surfaces against which the sealing members abut or are bonded.

As shown in FIG. 4, the front upper frame 15 is formed in a curved shape that protrudes upward when viewed from the front. More specifically, the front upper frame 15 is formed of a groove-shaped member that opens to the rear, and is formed in a curved shape that transitions upward from the left and right ends toward the widthwise center (longitudinal center). The front upper frame 15 is also formed in a uniform curved shape (arc shape) from one end to the other. The front upper frame 15 is also inclined so that its front surface transitions rearward as it approaches upward.

As shown in FIG. 4, the lower edge 9a of the front end of the roof 9, which corresponds to the front upper frame 15, is curved to follow the curved shape of the front upper frame 15.

As shown in Figures 3, 4, and 5, the first front pillar 13L and the second front pillar 13R are curved and protrude outward in front and side views. In more detail, the first front pillar 13L is curved and protrudes diagonally forward to the left, and the second front pillar 13R is curved and protrudes diagonally forward to the right.

The front panel 31 is curved to fit the first front pillar 13L and the second front pillar 13R. More specifically, the front panel 31 is curved to be convex toward the front, with the upper edge bonded to the front upper frame 15 via a sealant, the left side edge bonded to the first front pillar 13L via a sealant, and the right side edge bonded to the second front pillar 13R via a sealant.

As shown in FIG. 3 and FIG. 23, the side upper frame 18 (first side upper frame 18L and second side upper frame 18R) is formed in a curved shape that protrudes upward in a side view. More specifically, the side upper frame 18 is formed of a groove-shaped member (see FIG. 27) that opens inward in the width direction, and is formed in a curved shape that transitions upward from the front and rear ends toward the center in the front-rear direction (center in the longitudinal direction). The side upper frame 18 is also formed in a uniform curved shape (arc shape) from one end to the other. The side upper frame 18 (first side upper frame 18L and second side upper frame 18R) is inclined in an inclined shape that transitions inward in the width direction as it progresses upward. More specifically, the side upper frame 18 is inclined so that the side surface transitions inward in the width direction as it progresses upward.

As shown in FIG. 3, the lower edge 9b of the roof 9 at the widthwise end portion, which corresponds to the side upper frame 18, is formed in a curved shape that follows the curved shape of the side upper frame 18. This allows the side shape of the roof 9 to be matched to the shape of the bonnet.

As shown in FIG. 25, the door 27 is curved (spherical) and convex outward in the width direction, and abuts against the frame member that forms the boarding/alighting opening 28 via a sealing material.

By forming both the front upper frame 15 and the side upper frame 18 in a curved (rounded) shape that protrudes upward, the strength of the cabin 1 (cabin frame 8) can be improved. In addition, since the side upper frame 18 is curved and protrudes upward, and is inclined in a manner that transitions inward in the width direction as it goes upward, the side upper frame 18 follows the curved shape of the door 27 without having to bulge outward in the width direction. As a result, the side upper frame 18 can be formed approximately straight from the front pillar 13 to the rear pillar 16 in a plan view, and when manufacturing a cabin 1 with different front and rear lengths, it is not necessary to form side upper frames 18 of different lengths, and it can be handled by simply cutting the side upper frame 18. In addition, since both the front upper frame 15 and the side upper frame 18 are rounded, visibility can be improved when looking diagonally upward in the front, diagonally upward to the left, and diagonally upward to the right from inside the cabin.

As shown in FIG. 5, a first seal receiver 97L is provided at the corner between the front upper frame 15 and the first side upper frame 18L, and a second seal receiver 97R is provided at the corner between the front upper frame 15 and the second side upper frame 18R. A seal member arranged on the upper surface of the first side upper frame 18L from one side (left side) of the upper surface of the front upper frame 15 abuts against the first seal receiver 97L. A seal member arranged on the upper surface of the second side upper frame 18R from the other side (right side) of the upper surface of the front upper frame 15 abuts against the second seal receiver 97R.

The first seal receiver 97L and the second seal receiver 97R are collectively referred to as the seal receiver 97.

26, the seal receiver 97 has a base 97a and an extension 97b extending from the base 97a. The base 97a is disposed on the widthwise inner side of the front pillar 13 and is fixed to the upper wall 15a of the front upper frame 15. The base 97a also protrudes rearward from the front upper frame 15. The extension 97b extends from the rear of the base 97a outward in the widthwise direction and toward the top of the side upper frame 18.

The sides of the front upper frame 15 are curved downward as they move outward in the width direction, and the front parts of the side upper frames 18 are curved downward as they move forward, and because of the presence of the front pillars 13, it is difficult to continuously arrange the seal material from the front upper frame 15 through the front pillars 13 to the side upper frames 18. However, by providing the seal receiver 97, the seal material can be smoothly passed from the rounded front upper frame 15 to the rounded side upper frame 18, making it easy to continuously arrange the seal material.

23 and 27, the rear portion of the side upper frame 18 is recessed below the upper wall portion 37 of the rear pillar 14. More specifically, the rear portion of the first side upper frame 18L is recessed below the first upper wall portion 37L of the first rear pillar 14L, and the rear portion of the second side upper frame 18R is recessed below the second upper wall portion 37R of the second rear pillar 14R. That is, the first rear pillar 14L has the first upper wall portion 37L into which the rear portion of the first side upper frame 18L recesses, and the second rear pillar 14R has the second side upper frame 18R recessed below the first upper wall portion 37L of the first rear pillar 14L.
The rear portion of the side upper frame 18R extends downward into the second upper wall portion 37R. This allows the seal member to be provided continuously from the top surface of the side upper frame 18 to the top surface of the rear pillar 14.

Conventionally, when mounting an air conditioning unit 26 on the rear upper frame 16, the step between the rear pillar 14 and the rear upper frame 16 (the difference in height between the top surface of the rear pillar 14 and the top surface of the rear upper frame 16) needs to be deep (large) in order to reduce the height of the air conditioning unit 26. This means that sealing materials need to be stacked to fill the step, which creates the problem of poor sealing performance at the step. Also, the area where the air conditioning unit 26 is mounted is clearly visible, which makes it obvious that the air conditioning unit 26 is mounted.

In this embodiment, as shown in FIG. 23, the side upper frame 18 is formed in a curved shape that protrudes upward, so that the rear portion 18a of the side upper frame 18 is formed in a curved shape that transitions downward toward the rear. That is, the side upper frame 18 is formed so that the rear portion 18a is lowered. As a result, the height of the rear end side 18b of the side upper frame 18 can be made closer to the height of the rear upper frame 16. By making the height of the rear end side 18b of the side upper frame 18 closer to the height of the rear upper frame 16, the height of the upper wall portion 37 of the rear pillar 14 can be lowered. This makes it possible to reduce the step S1 in the height direction (vertical direction) between the upper wall portion 37 and the rear upper frame 16. By reducing this step S1, the sealing performance of the step portion S2 (see FIG. 27) can be improved, and the roof 9 (outer roof 25) can be shaped to eliminate the feeling that the air conditioner unit 26 is installed.

In this embodiment, as shown in FIG. 23, the rear end sides 18b of the side upper frames 18 (first side upper frame 18L and second side upper frame 18R) are provided at the same height as the rear upper frame 16. The rear ends of the side upper frames 18 and the top surface of the rear upper frame 16 may be aligned at the same height or may be slightly misaligned in the vertical direction.

23, the height of the upper wall portion 37 of the rear pillar 14 can be adjusted to match the height of the rear end side 18b of the side upper frame 18 and the rear upper frame 16. By adjusting the height of the upper wall portion 37 of the rear pillar 14 to the height of the rear end side 18b of the side upper frame 18 and the rear upper frame 16, the seal member can be continuously arranged from the side upper frame 18 through the upper wall portion 37 of the rear pillar 14 to the rear upper frame 16. In turn, the seal member that is arranged from the front upper frame 15 through the first seal receiver 97L, the first side upper frame 18L, the first upper wall portion 37L of the first rear pillar 14L, the rear upper frame 16, the second upper wall portion 37R of the second rear pillar 14R, the second side upper frame 18R, and the second seal receiver 97R to the front upper frame 15 can be formed continuously (annularly).

The cabin 1 of this embodiment provides the following advantages:

The cabin 1 is mounted on the aircraft body 3 and has a hollow rear pillar 14 provided at the rear of the side of the cabin 1. The rear pillar 14 has an interior opening 59 that connects the interior 38 of the rear pillar 14 to the interior of the cabin, and an exterior opening 55 that connects the interior 38 of the pillar to the outside of the cabin.

With this configuration, outside air can be introduced into the cabin from the exterior opening 55 through the pillar interior 38 and the interior opening 59. Providing a ventilation function in the rear pillar 14 eliminates the need to use the quarter glass as a ventilation component. And since there is no need to provide a center pillar for the quarter glass, the visibility to the sides of the cabin 1 can be improved. Also, costs can be reduced by reducing the number of parts.

The rear pillar 14 also has a cover 60 that can swing between a closed position X1 that closes the interior opening 59 and an open position X2 that swings from the closed position X1 toward the pillar interior 38 to open the interior opening 59, and a biasing member 66 that biases the cover 60 in the direction from the open position X2 to the closed position X1.

According to this configuration, when the door 27 of the cabin 1 is closed and the internal pressure inside the cabin increases, the lid body 60 opens against the biasing force of the biasing member 66 due to the internal pressure. In other words, by opening the lid body 60 when the door 27 is closed, air can be bled from inside the cabin, and the door 27 can be closed smoothly.

In addition, the rear pillar 14 has an opening forming portion (contact wall 34a) that faces forward and in which the exterior opening 55 is formed.

With this configuration, as the aircraft body 3 carrying the cabin 1 moves forward, outside air can be efficiently introduced into the cabin through the exterior opening 55.

The opening forming portion (contact wall 34a) is inclined so that it transitions rearward as it moves outward in the width direction of the cabin 1.

This configuration provides good visibility when looking rearward from inside the cabin.

The vehicle also has a front pillar 13 provided at the front of the side, a door 27 provided between the front pillar 13 and the rear pillar 14, a first door hinge 29 attached to the upper part of the rear pillar 14 and supporting the door 27, and a second door hinge 30 attached to the lower part of the rear pillar 14 and supporting the door 27, and an exterior opening 55 is provided between the first door hinge 29 and the second door hinge 30.

With this configuration, the space between the first door hinge 29 and the second door hinge 30 can be used to form an exterior opening 55 in the rear pillar 14.

In addition, the rear pillar 14 has a first communication opening 53 and a second communication opening 54 that are different from the exterior opening 55 and connect the pillar interior 38 to the outside of the cabin, the first communication opening 53 being provided in a portion corresponding to the first door hinge 29, and the second communication opening 54 being provided in a portion corresponding to the second door hinge 30.

This configuration makes it possible to increase the amount of outside air introduced into the pillar interior 38 through the first communication opening 53 and the second communication opening 54, and also makes it possible to prevent rainwater or water from a car wash from entering through the first communication opening 53 and the second communication opening 54 through the first door hinge 29 and the second door hinge 30.

It also includes a lid operating mechanism 65 that operates the lid 60 from the closed position X1 to the open position X2 and holds it in the open position X2.

With this configuration, the opening and closing operation 65 of the lid body can be performed remotely, for example, the opening and closing operation of the lid body 60 can be performed near the driver's seat 6.

The vehicle also includes a hollow roof 9 and an air conditioning unit 26 installed inside the roof 9, and the rear pillar 14 has an outside air inlet 37a that connects the pillar interior 38 to the interior of the roof 9.

If an outside air inlet for taking in outside air inside the roof 9 is provided on the roof 9 of the cabin 1, the outside air will be heated by the roof 9, which is exposed to strong sunlight, resulting in a decrease in the performance of the air conditioning unit 26. However, in this embodiment, outside air can be circulated over a short distance from an area less affected by sunlight to the air conditioning unit 26, improving the performance of the air conditioning unit 26. In addition, the appearance of the roof 9 can be improved compared to when an outside air inlet is provided on the roof 9 of the cabin 1.

The rear pillar 14 also has a partition wall 67 that divides the pillar interior 38 into a ventilation passage 68 that allows the outside air taken in from the exterior opening 55 to flow to the interior opening 59, and an outside air introduction passage 69 that allows the outside air taken in from the exterior opening 55 to flow to the outside air introduction port 37a, and an outside air filter 70 that is attached to the partition wall 67 and removes dust from the outside air flowing from the exterior opening 55 to the outside air introduction passage.

This configuration allows dust in the outside air taken in through the indoor opening 59 to be removed and sent to the air conditioning unit 26.

The cabin 1 includes an inner roof 24 that forms the ceiling of the cabin interior, and a resonator 86 that reduces the booming sound generated inside the cabin interior. The inner roof 24 is made of resin, and the resonator 86 is molded integrally with the inner roof 24 using the resin that forms the inner roof 24.

With this configuration, no additional parts are required to attach the resonator 86 to the inner roof 24, and the resonator 86 can be installed on the inner roof 24 in a space-saving manner and without additional cost.

The vehicle also includes a driver's seat 6 located inside the cabin, and the resonator 86 is located above the driver's seat 6 and has at least one resonance tube (first resonance tube 86A to third resonance tube 86C). The resonance tubes 86A to 86C are formed in a long cylindrical shape in the front-to-rear direction, have a closed front end, and have an opening hole 87 at the rear end that opens into the cabin.

This configuration reduces noise near the operator's ears.

The resonator 86 also includes multiple resonance tubes (first resonance tube 86A to third resonance tube 86C) of different lengths arranged side by side in the width direction of the inner roof 24.

This configuration allows a resonator 86 that reduces noise at the operator's ears to be compactly installed on the inner roof 24.

In addition, the inner roof 24 has a downwardly opening recess 88 formed by recessing the wall portion that forms the inner roof 24 upward, and the resonator 86 is integrally molded into the upper wall 88b of the recess 88.

This configuration prevents the resonator 86 from narrowing the head clearance.

The resonator 86 also protrudes upward and downward from the upper wall 88b of the recess 88.

This configuration ensures sufficient head clearance for the operator.

The cabin 1 is mounted on the aircraft body 3, and includes a first front pillar 13L and a second front pillar 13R arranged side by side with a gap in the width direction of the cabin 1, a first rear pillar 14L arranged behind the first front pillar 13L and a second rear pillar 14R arranged behind the second front pillar 13R, a front upper frame 15 connecting the upper parts of the first front pillar 13L and the second front pillar 13R, and a front upper frame 16 connecting the upper parts of the first rear pillar 14L and the second rear pillar 14R. The front upper frame 15 is provided with a rear upper frame 16 that connects the first front pillar 13L and the first rear pillar 14L, a first side upper frame 18L that connects the upper parts of the first front pillar 13L and the first rear pillar 14L, and a second side upper frame 18R that connects the upper parts of the second front pillar 13R and the second rear pillar 14R. The front upper frame 15 is formed in a curved shape that protrudes upward when viewed from the front, and the first side upper frame 18L and the second side upper frame 18R are formed in a curved shape that protrudes upward when viewed from the side.

With this configuration, the front upper frame 15, the first side upper frame 18L, and the second side upper frame 18R are formed in a curved shape that protrudes upward, thereby improving the strength and visibility of the cabin 1.

The first side upper frame 18L and the second side upper frame 18R are inclined inward in the width direction as they extend upward, and are curved upward in an arc shape.

With this configuration, the first side upper frame 18L and the second side upper frame 18R can be fitted to the curved panel without bending the first side upper frame 18L and the second side upper frame 18R outward in the width direction of the cabin 1. In addition, since the first side upper frame 18L and the second side upper frame 18R do not have to be curved outward in the width direction of the cabin 1, when manufacturing cabins 1 with different front-to-rear lengths, cabins 1 with different front-to-rear lengths can be manufactured by making the lengths of the first side upper frame 18L and the second side upper frame 18R different.

The rear ends of the first side upper frame 18L and the second side upper frame 18R are located at the same height as the rear upper frame 16.

With this configuration, the height difference between the rear ends of the first side upper frame 18L and the second side upper frame 18R and the rear upper frame 16 is reduced, making it possible to continuously arrange the sealing member from the first side upper frame 18L and the second side upper frame 18R to the rear upper frame 16.

Also, from one side of the upper surface of the front upper frame 15 to the first side upper frame 18L
and a second seal receiver 97R against which a seal member arranged on the upper surface of the second side upper frame 18R from the other side of the upper surface of the front upper frame 15 abuts.

This configuration allows the sealing member to be continuously arranged from the curved first side upper frame 18L and second side upper frame 18R to the curved front upper frame 15.

In addition, the first rear pillar 14L has a first upper wall portion 37L into which the rear portion of the first side upper frame 18L fits downward, and the second rear pillar 14R has a second upper wall portion 37R into which the rear portion of the second side upper frame 18R fits downward.

With this configuration, the sealing member can be arranged continuously from the top surface of the first side upper frame 18L to the first upper wall portion 37L, and the sealing member can be arranged continuously from the top surface of the second side upper frame 18R to the second upper wall portion 37R.

Although one embodiment of the present invention has been described above, the embodiment disclosed herein should be considered to be illustrative in all respects and not restrictive. The scope of the present invention is indicated by the claims rather than the above description, and is intended to include all modifications within the meaning and scope of the claims.

Reference Signs List 1 Cabin 3 Airframe 9 Roof 14 Rear pillar 27 Door 28 Passenger door 29 First door hinge 30 Second door hinge 34 Member (second member)
37a Outside air inlet 38 Inside of pillar 41 First portion 42 Second portion 53 First communication opening 54 Second communication opening 55 Outdoor side opening 59 Outdoor side opening

Claims (7)

A cabin installed in an aircraft,
a rear pillar provided at a rear portion of a side surface of the cabin and formed hollow, the rear pillar having an exterior opening for taking in outside air that is air outside the cabin;
a door supported on the rear pillar so as to open and close an entrance to the cabin;
A lid operating mechanism;
Equipped with
the rear pillar has a first portion with which the door abuts via a sealant, and a second portion extending from the first portion outward in a width direction of the cabin, facing a front side , and having the exterior opening provided therein;
Further, the rear pillar has an interior opening that connects the interior of the rear pillar to the interior of the cabin, a lid body that can swing between a closed position that closes the interior opening and an open position that opens the interior opening, and a biasing member that biases the lid body in a direction from the open position to the closed position to bring the lid body to the closed position,
The lid operating mechanism is capable of operating the lid from the closed position to the open position against the biasing force of the biasing member and maintaining the lid in the open position . The cabin according to claim 1, wherein the second portion is formed in an inclined shape that transitions rearward from the rear edge of the first portion toward the outside in the width direction. The cabin according to claim 1 or 2, wherein the rear pillar has a member in which the exterior opening is formed and which is fitted and fixed to the second portion. a first door hinge attached to an upper portion of the rear pillar and supporting the door;
a second door hinge attached to a lower portion of the rear pillar and supporting the door;
Equipped with
The cabin according to any one of claims 1 to 3, wherein the exterior opening is provided between the first door hinge and the second door hinge. the rear pillar has a first communication opening and a second communication opening that are different from the exterior opening and communicate an inside of the rear pillar with an exterior of the cabin,
The first communication opening is provided in a portion corresponding to the first door hinge,
The cabin according to claim 4 , wherein the second communication opening is provided in a portion corresponding to the second door hinge. The cabin according to any one of claims 1 to 5 , wherein the lid operating mechanism allows the lid to swing when the operation of the lid is not being performed. The cabin according to any one of claims 1 to 6, wherein the rear pillar has an outside air inlet that connects the inside of the rear pillar to the inside of the roof of the cabin.

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