JP2003250661A - Driver's seat and work machine provided with the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a driver's seat having a simple configuration and capable of realizing satisfactory sitting comfortableness and supplying air conditioning air to the buttocks part and the back of a body contacting closely to the driver' s seat when seated thereon. <P>SOLUTION: A three-dimensional surface skin 17 for seat and a blow-out port 19 for seat for blowing out conditioned air are attached to a seat frame 14, and a three-dimensional surface skin 18 for the back and a blow-out port 22 for the back for blowing out conditioned air are attached to a back frame 15. Consequently, adjusted air is blown to an operator from each blow-out port 19, 22 by utilizing the ventilation property of the three-dimensional surface skins 17, 18. Moreover, the blow-out port 19 for seat is arranged with a clearance A1 equivalent to depressing amount of the three-dimensional surface skin 17 for seat and a clearance A2 as room. The blow-out port 22 for the back is arranged with a clearance B1 equivalent to a depressing amount of the three- dimensional surface skin 18 for the back and a clearance B2 as room. As a result, it is possible to prevent the operator from coming into contact with each blow-out port 19, 22 when seated on the driver's seat and realize satisfactory sitting comfortableness. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a driver's seat suitable for use in, for example, a hydraulic excavator, a hydraulic crane, a forklift and the like, and a working machine equipped with the driver's seat.

[0002]

2. Description of the Related Art Generally, a working machine such as a hydraulic excavator is provided with a lower traveling body which can be self-propelled, an upper revolving body which is rotatably mounted on the lower traveling body, and a hoisting motion in front of the upper revolving body. It is generally configured by a work device that is provided so as to be possible.

Further, the upper revolving structure is provided with a cab on the front side on the revolving frame, and in the cab, a driver's seat on which an operator is seated, a lever operated by the operator, and cold air or warm air (harmonious) in the cab. And an air conditioning unit for supplying air).

Here, the driver's seat is composed of a seat portion on which the operator sits down and a backrest portion on which the operator leans.
For example, Japanese Utility Model Publication No. 6-31557 and Japanese Utility Model Publication No. 6-455.
54, JP 2001-87077 A, JP 2
It is known from Japanese Patent Publication No. 001-180263.

The seat portion is composed of a seat frame which is a base, a cushion material made of a urethane foam material and the like mounted on the seat frame, and a skin provided so as to cover the cushion material. The backrest is similarly constructed.

Further, in order to improve the working environment of the operator, conditioned air is supplied to the driver's seat toward the buttocks, thighs, back, etc., which are in close contact with the operator when the operator is seated. This has the effect of reducing the stuffiness in summer and the chill in winter.

Specifically, a hole penetrating in the thickness direction is formed at approximately the center of the cushioning material of the seat portion and the backrest portion, and an air outlet connected to the air conditioning unit via a duct is attached to this hole portion, A large number of small holes are provided in the outer skin at the portions corresponding to the holes, or a net member is sewn separately.

In the hydraulic excavator constructed in this way, for example, in summer work, cool air is blown from the air conditioning unit into the cab to lower the temperature in the cab and improve the working environment. However, when the operator is seated in the driver's seat, cold air does not reach the parts closely contacting the driver's seat, the buttocks, the thighs, the back, etc., so that these parts cannot be cooled. Therefore, cold air is supplied from the air conditioning unit to the air outlet, and cool air is blown from the air outlet to the buttocks, thighs, back, etc. of the operator through the holes in the cushion material, the small holes in the skin, and the like. Similarly, in the winter, warm air is supplied to the operator to warm it.

[0009]

In the driver's seat according to the prior art described above, a through hole is formed in a part of the cushion material, and a large number of small holes are formed in the skin corresponding to the through hole, or a net member is used. Is sewn separately. For this reason, the structure of the cushion material and the skin becomes complicated, which causes a problem of increasing manufacturing cost.

Moreover, if the through hole of the cushion material is simply covered with a skin or a net member, the skin at the position of the through hole largely sinks into the through hole, so that the cushioning property is better than that of the portion where the cushion material is present. It will be different. Therefore, there is a problem that the operator feels uncomfortable when sitting in the driver's seat.

Further, in the working machine of the hydraulic excavator, the operator may sit on the driver's seat or eat and drink in the cab with rainwater or the like adhering to the clothes. There is a risk that it will fall into the air and enter the air outlet. When moisture reaches the air conditioning unit side from the air outlet through the duct, the air conditioning unit may break down, leading to a decrease in reliability.

The present invention has been made in view of the above-mentioned problems of the prior art, and an object of the present invention is to provide a conditioned air supply with a simple structure and good sitting comfort. To provide a working machine including a seat and the driver's seat.

[0013]

A driver's seat according to the invention of claim 1 is attached to a seat frame comprising a seat frame and a backrest frame provided on the rear side of the seat frame, and the backrest frame of the seat frame. A three-dimensional skin for a backrest, which is three-dimensionally woven with a large number of piles interposed between the front mesh layer and the back mesh layer.

Then, in order to solve the above-mentioned problems,
The feature of the configuration adopted by the invention according to claim 1 is that the back frame of the seat frame is located on the back side of the three-dimensional skin for the backrest and is open to the skin side and has a gap with the three-dimensional skin for the backrest. A backrest outlet is provided, and the backrest outlet is connected to an air conditioning unit that supplies conditioned air.

With this structure, the three-dimensional skin for the backrest, which is composed of the front surface mesh layer, the back surface mesh layer, and a large number of piles, is attached to the backrest frame of the seat frame, without using a separate cushion material.
The cushioning property of the three-dimensional skin can improve the sitting comfort. Further, since the three-dimensional skin itself has sufficient air permeability, it is not necessary to provide a small hole for ventilation or to sew a net member separately, so that the structure can be simplified.

Further, the backrest outlet is provided in the backrest frame with a gap between it and the backrest three-dimensional skin, so that even when the operator sits in the driver's seat and leans against the backrest three-dimensional skin, the backrest is also leaned. It is possible to reduce the contact between the three-dimensional skin for the back and the outlet for the backrest or prevent the contact.

According to a second aspect of the present invention, a driver's seat includes a seat frame including a seat frame and a backrest frame provided on the rear side of the seat frame, and a front mesh layer and a back mesh attached to the seat frame of the seat frame. The seat includes a three-dimensional skin for seats which is three-dimensionally woven with a large number of piles interposed between the layers.

In order to solve the above problems,
The feature of the configuration adopted by the invention according to claim 2 is that the seat frame of the seat frame is positioned on the back side of the seat three-dimensional skin and is open to the skin side with a gap between the seat three-dimensional skin and the seat three-dimensional skin. A seat air outlet is provided, and the seat air outlet is connected to an air conditioning unit that supplies conditioned air.

With this structure, the seat three-dimensional skin can have a good seating comfort due to its cushioning property, as in the first aspect described above.
The structure can be simplified by omitting the small holes for ventilation and the net member. Further, the gap between the seat outlet and the seat three-dimensional skin can reduce or prevent contact between the seat three-dimensional skin and the seat three-dimensional outlet.

A driver's seat according to a third aspect of the present invention includes a seat frame including a seat frame and a backrest frame provided on the rear side of the seat frame, a front mesh layer and a back mesh attached to the seat frame of the seat frame. The seat includes a three-dimensional skin for seats which is three-dimensionally woven with a large number of piles interposed between the layers and a three-dimensional skin for backrest attached to the back frame.

In order to solve the above problems,
A feature of the configuration adopted by the invention according to claim 3 is that the seat frame of the seat frame is located on the back side of the seat three-dimensional skin and is open to the skin side and has a gap between the seat three-dimensional skin. A seat outlet is provided, and a backrest frame of the seat frame is provided on the back side of the backrest three-dimensional skin and is opened to the skin side, and a backrest outlet is provided with a gap between the backrest three-dimensional skin and the backrest three-dimensional skin. The seat outlet and the backrest outlet are connected to an air conditioning unit that supplies conditioned air.

With this construction, the seat three-dimensional skin and the back three-dimensional skin can be made to have a good seating comfort due to their cushioning properties, and in the same manner as in the above-mentioned claim 1, the three-dimensional skin for seating can be made comfortable. The structure can be simplified by omitting the small holes and the net member. Further, the gap between the blowout port and the three-dimensional skin can reduce the contact between the three-dimensional skin and the blowout port, or can prevent the three-dimensional skin from coming into contact with each other.

According to the fourth aspect of the invention, the three-dimensional skin is partially provided in the frame of the seat frame, and the air outlet is arranged at a position corresponding to the three-dimensional skin partially provided.

With this structure, it is possible to reduce the amount of expensive three-dimensional skin used as compared with the skin generally used in the driver's seat. Further, since the three-dimensional skin has a cushioning property, even if the back surface side is a through hole, it does not largely sink in part.

According to the fifth aspect of the present invention, since the air outlet is formed as a thin box body in which the back surface side of the three-dimensional skin is open, a narrow space below the three-dimensional skin for seats and behind the three-dimensional skin for backrests. It is also possible to arrange an outlet.

According to the sixth aspect of the present invention, since the air outlet is formed as a thin box having an opening on the back side of the three-dimensional skin, and the opening of the air outlet is formed smaller than the area of the three-dimensional skin, a small air outlet is formed. The conditioned air blown out from the outlet can be supplied to a wide range through a wide three-dimensional skin.

According to the invention of claim 7, the gap between the three-dimensional skin and the outlet is set to a dimension that allows the three-dimensional skin to sink, so that the operator sits in the driver's seat Even when the epidermis sinks, it is possible to prevent the solid epidermis from coming into contact with the outlet.

According to the invention of claim 8, since the water outlet has a drain hole for discharging the water that has entered the air outlet, even if the water enters the air outlet, this water is
It can be drained from the drain hole before flowing into the air conditioning unit side.

A working machine according to a ninth aspect of the present invention is a seat frame including a seat frame and a backrest frame provided on the rear side of the seat frame, and at least one of a seat frame and a backrest frame of the seat frame. It has a driver's seat attached to one frame and composed of a three-dimensional skin three-dimensionally woven with a large number of piles interposed between a front mesh layer and a back mesh layer, and the driver's seat is attached to the vehicle body It has a driver's seat.

Then, in order to solve the above-mentioned problems,
A feature of the configuration adopted by the invention according to claim 9 is that at least one of a seat frame and a backrest frame of the seat frame is located on the back surface side of the three-dimensional skin and is open to the skin side. An air outlet is provided with a gap between the three-dimensional skin and the air outlet is connected to an air conditioning unit that supplies conditioned air.

With this configuration, even when work is performed in summer with high temperature or in winter with low temperature, the air outlet has cold air and warm air from the air conditioning unit on the buttocks, thighs of the operator seated in the driver's seat. It can be sprayed toward the back and the like, and the operator can be provided with a comfortable working environment. Moreover, even if the three-dimensional skin of the driver's seat largely sinks due to vibrations during work or traveling, the gap between the outlet and the three-dimensional skin will cause contact between the outlet and the three-dimensional skin due to the sinking at this time. It is possible to prevent discomfort in the sitting posture during work and traveling.

[0032]

BEST MODE FOR CARRYING OUT THE INVENTION A case where a driver's seat according to an embodiment of the present invention is provided inside a cab of a hydraulic excavator as a working machine will be described below in detail with reference to the accompanying drawings.

First, FIGS. 1 to 6 show a first embodiment of the present invention. Reference numeral 1 denotes a hydraulic excavator to which a driver's seat 11 to be described later according to the embodiment is applied. The hydraulic excavator 1 constitutes a vehicle body together with a lower traveling body 2 capable of self-propelling and the lower traveling body 2, An upper revolving structure 3 rotatably mounted on a traveling structure 2, and a working device 4 provided on the front side of the upper revolving structure 3 so as to be able to lift and lower, and for excavating earth and sand and the like.
It is composed of and. Here, the upper swing body 3 includes a building cover 6, a cab 7 described later, on the swing frame 5.
Etc. are provided.

Reference numeral 7 denotes a cab arranged on the left side of the front part of the revolving frame 5, and the cab 7 is formed in a box shape by a cab box 7A covering the periphery and a floor plate 7B covering the lower part, as shown in FIG. Has been done. Also, the cab 7 has a floorboard 7
A driver's seat 11 which will be described later is disposed at a substantially central portion of B, and working levers 8 (only the left side is shown) for operating the working device 4 and the like are provided on both left and right sides of the driver's seat 11. ,
On the front side, a traveling lever 9 for traveling the undercarriage 2
Is provided.

10 is located on the rear side of the driver's seat 11 and is located on the floor plate 7.
The air conditioning unit provided on the B
Supplies conditioned air such as cold air and warm air into the cab 7, and has a plurality of outlets (not shown).

Reference numeral 11 denotes a driver's seat provided in the cab 7 according to the present embodiment. The driver's seat 11 is arranged on the floor plate 7B via a pedestal 12. And the driver's seat 11 is
As shown in FIGS. 3 and 4, the seat frame 13, the three-dimensional skins 17 and 18, the outlets 19 and 22 and the like, which will be described later, are generally configured.

Here, the pedestal 12 is provided with a slide mechanism for adjusting the front and rear positions of the driver's seat 11 and a height mechanism (neither is shown) for adjusting the height position of the driver's seat 11. . As a result, the front, rear and height positions of the driver's seat 11 can be adjusted to appropriate positions according to the physique of the operator.

Reference numeral 13 denotes a seat frame which forms the skeleton of the driver's seat 11. The seat frame 13 includes a seat frame 14 mounted on the pedestal 12, a backrest frame 15 provided on the rear side of the seat frame 14, and the above-mentioned seat frame 14. The seat frame 14 is generally constituted by left and right support members 16 and 16 which support the back frame 15 so as to be tiltable. Further, the support member 16 is provided with an angle adjusting mechanism (not shown) for fixing the backrest frame 15 at an arbitrary angle.

Here, the seat frame 14 is formed as a quadrangular frame body by bending, for example, a circular pipe material, and the front frame 14A and the rear frame 1 are arranged in parallel at the front and rear positions.
4B and arch-shaped left frame 14C and right frame 14D that are arranged in parallel at the left and right positions. Also, the seat frame 14
Is provided with brackets 14E and 14F that are spaced apart from each other and extend in parallel between the front frame 14A and the rear frame 14B.
The brackets 14E and 14F are, as shown in FIG.
In order to separate a seat outlet 19 to be described later from the seat three-dimensional skin 17 with a gap therebetween, both end sides thereof are formed in a U shape extending upward and are fixed to the left frame 14C and the right frame 14D.

Further, the backrest frame 15 is formed in the same manner as the seat frame 14 as a quadrangular frame body by bending a circular pipe material, for example, and is an upper frame arranged parallel to the upper and lower positions. 15A and a lower frame 15B, and an arch-shaped left frame 15C and a right frame 15D that are arranged in parallel at left and right positions. Further, the backrest frame 15 is provided with brackets 15E and 15F that are vertically spaced apart from each other between the upper frame 15A and the lower frame 15B and are spaced apart from each other in parallel.
E and 15F are U-shaped in which both end sides extend forward so as to separate a backrest outlet port 22 described later from the backrest three-dimensional skin 18 with a gap to the rear side, and the left frame 1
5C, fixed to the right frame 15D.

Reference numeral 17 denotes a seat three-dimensional skin attached to the seat frame 14. The seat three-dimensional skin 17 is, for example, the one disclosed in Japanese Unexamined Patent Publication No.
It has the structure shown in 1-87077. Here, the seat three-dimensional skin 17 is formed by weaving polyester fibers, for example. Specifically, the seat three-dimensional skin 17 has a surface mesh layer 17 as shown in FIG.
A, back side mesh layer 17B and each mesh layer 17
The truss structure is three-dimensionally woven from a large number of piles 17C interposed so as to connect A and 17B at intervals. Accordingly, the three-dimensional seat skin 17 has sufficient strength and cushioning property (spring property), and is also excellent in breathability.

As shown in FIG. 5, the seat three-dimensional skin 17 is wound around the seat frame 14 and attached by means such as hooking, sewing, and adhering.
Thereby, the three-dimensional epidermis 17 can support the operator's buttocks and thighs like a hammock.

Reference numeral 18 denotes a backrest three-dimensional skin attached to the backrest frame 15. The backrest three-dimensional skin 18 is formed in the same manner as the seat three-dimensional skin 17, and the periphery thereof is wound around the backrest frame 15 and hooked. It is attached by means such as sewing or adhesion. As a result, the three-dimensional skin 18
Can support the operator's back like a hammock.

Reference numeral 19 denotes a seat outlet that is horizontally attached to the lower side of the seat frame 14. The seat outlet 19 blows conditioned air from the air conditioning unit 10 onto the buttocks and thighs of the operator. is there. The seat air outlet 19 is attached to the brackets 14E and 14F of the seat frame 14 in the horizontal direction with the upper side opened. Also, the seat outlet 19
Has an opening 19 on the upper side (the back side of the three-dimensional seat skin 17).
It is formed as a thin box body that becomes A, and its bottom surface portion 19B
Is inclined toward the front so that it has a shallow bottom, and the rear part is depressed like a funnel toward the center. Further, the rear surface portion 19
A connection pipe 19D is provided at C to extend rearward, and the connection pipe 19D is connected to the air conditioning unit 10 via a supply pipe 25 and a bellows pipe 26 described later.

Here, the seat blow-out port 19 is arranged with a space for allowing the seat three-dimensional skin 17 to sink into the seat three-dimensional skin 17. Specifically, the air outlet 19 for the seat and the three-dimensional skin 17 for the seat are shown in FIG.
As indicated by the chain double-dashed line in the figure, the upper and lower clearances A1 correspond to the sinking of the seat three-dimensional skin 17 when the operator is seated in the driver's seat 11, and the sinking occurs due to a difference in body size and shaking during work. Clearance gap A2 when there is a large amount of jam
It is arranged with.

As a result, the operator does not come into contact with the seat outlet 19 when seated in the driver's seat 11, so that the operator can sit comfortably without feeling discomfort in the buttocks or thighs. .

Further, the opening 19A of the seat outlet 19
Is formed to be smaller than the area of the three-dimensional seat skin 17,
As a result, the conditioned air blown out from the air outlet 19 is supplied to a wide range of the three-dimensional skin 17.

Reference numeral 20 denotes a water draining hole provided in the seat air outlet 19, which drains water that has entered the seat air outlet 19, and has a funnel shape at the rear side of the bottom surface portion 19B. It is formed in the center part which is depressed. Also, drain hole 2
A drain hose 21 is connected to 0, and the water that has entered the seat outlet 19 is discharged to the outside or the outside of the floor plate 7B through the drain hose 21.

Reference numeral 22 denotes a backrest air outlet vertically mounted on the rear side of the backrest frame 15. The backrest outlet 22 blows conditioned air from the air conditioning unit 10 onto the operator's back. The back outlet 22 is provided with the brackets 15E and 15F of the back frame 15.
The front side is open and mounted vertically. Also,
The back outlet 22 is located on the front side (backrest solid skin 1
8) is formed as a thin box having an opening 22A, the bottom 22B has a mountain shape with a protruding middle portion, and the bottom 22C has a funnel shape toward the center. It is recessed in. Further, a connection pipe 22D is provided extending obliquely downward on the lower side of the bottom surface portion 22B, and the connection pipe 22D is connected to the air conditioning unit 10 via a supply pipe 25 and a bellows pipe 27 described later. .

Here, the backrest outlet port 22 is arranged with a gap for allowing the backrest three-dimensional skin 18 to sink into the backrest three-dimensional skin 18. Specifically, as shown by the alternate long and two short dashes line in FIG. 5, the backrest outlet 22 and the backrest three-dimensional skin 18 are seated by an operator in the driver's seat 11 and the backrest three-dimensional skin 18 is formed.
With a clearance B1 in the front and rear directions corresponding to the sinking amount of the backrest three-dimensional skin 18 when leaning against the back, and a clearance B2 for a margin when the sinking becomes large due to a difference in physique and shaking during work. It is arranged.

As a result, the operator does not come into contact with the backrest outlet 22 when leaning against the driver's seat 11, so that the operator can obtain a comfortable sitting comfort without feeling discomfort on the back or the like.

Furthermore, the opening 2 of the back outlet 22
2A is formed to be smaller than the area of the backrest three-dimensional skin 18, whereby the conditioned air blown out from the air outlet 22 is supplied to a wide range of the three-dimensional skin 18.

Reference numeral 23 denotes a water drain hole provided in the backrest outlet 22, and the water drain hole 23 is used for the backrest outlet 22.
It drains the water that has entered into the lower surface 22C, and is formed in the central portion of the lower surface portion 22C, which is depressed like a funnel. Further, a drain hose 24 is connected to the drain hole 23, and the moisture that has entered the backrest outlet 22 passes through the drain hose 24 and the floor board 7 is drained.
It is discharged to B.

25 is a supply pipe whose one end is connected to the air conditioning unit 10 and the other end is branched into two, and 26 is a supply pipe 25.
A bellows pipe connected between the branch end of the supply pipe 25 and the connection pipe 19D of the blowout port 19, and 27 is a bellows pipe connected between the branch end of the supply pipe 25 and the connection pipe 22D of the blowout port 22, Tube 2
5, the bellows tubes 26, 27 constitute a ventilation duct. Here, the bellows tube 26 is for absorbing the positional deviation in the front direction, the rear direction, or the like, which occurs between the connection pipe 19D and the supply pipe 25 when the position of the driver's seat 11 is adjusted in the front direction, the rear direction, or the like. Further, the bellows pipe 27 absorbs a displacement in an oblique direction between the connection pipe 22D and the supply pipe 25 when the backrest angle of the driver's seat 11 is adjusted.

Further, as shown in FIG. 3, 28 is a headrest attached to the upper part of the backrest frame 15, 29, 29.
Indicates armrests attached to both the left and right sides of the backrest frame 15.

The hydraulic excavator 1 according to the present embodiment has the above-mentioned structure, and its operation will be described below.

First, the operator gets in the cab 7, sits in the driver's seat 11, and operates the traveling lever 9 to cause the lower traveling body 2 to travel. Further, when the work lever 8 is operated, the work device 4 can be lowered and the upper swing body 3 can be swung to excavate the earth and sand.

Further, during the above-mentioned work, the air conditioning unit 10 is started in accordance with the temperature at that time. For example, in the work in summer, cool air is blown into the cab 7 from the air outlet of the air conditioning unit 10 to obtain an appropriate room temperature. There is.

Further, the air conditioning unit 10 also supplies a part of the cool air to the driver's seat 11 via the supply pipe 25 and the like. And, a part of the cooler supplied to the driver's seat 11 is
The cold air that has flowed through the supply pipe 25 and the bellows pipe 26 toward the seat outlet 19 and is blown out from the opening 19A of the seat outlet 19 passes through the seat three-dimensional skin 17, and the buttocks of the operator, Can be sprayed on the thigh. This allows
The buttocks and thighs of the operator, which are in close contact with the seat three-dimensional skin 17, can also be cooled by cold air.

On the other hand, a part of the cool air is also supplied to the backrest outlet 22 through the supply pipe 25 and the bellows pipe 27, and the cool air blown from the opening 22A of the backrest outlet 22 is used for the backrest. The three-dimensional skin 18 can be passed and sprayed on the operator's back. As a result, the operator's back, which is in close contact with the backrest three-dimensional skin 18, can also be cooled with cool air.

As described above, the seat outlet 19 and the backrest outlet 22 can directly blow cold air or warm air to the operator seated in the driver's seat 11. Even when working outdoors in low winter, the air outlets 19 and 22 can blow cold and warm air from the air conditioning unit 10 toward the operator's buttocks, thighs, back, etc. without being obstructed by the wind. The operator can be provided with a comfortable work environment.

Moreover, the three-dimensional skins 17 and 18 are
It may sink greatly due to vibrations during traveling, but even in such a case, the seat three-dimensional skin 17 and the seat outlet 1
9 and the gap between the backrest three-dimensional skin 18 and the backrest outlet 22, the three-dimensional skins 17, 18 and the outlet 19,
Since the contact with 22 is prevented, it is possible to eliminate the discomfort in the sitting posture.

In rainy weather, the operator may sit on the driver's seat 11 or eat or drink in the cab 7 while rainwater or the like is attached to the clothes. It may fall into the seat 11 and penetrate into the air outlets 19 and 22. However, in the present embodiment, the outlet 1
Before the water that has infiltrated into 9, 22 flows into the connection pipes 19D, 22D side, this water can be discharged from the water drain holes 20, 23 through the drain hoses 21, 24 onto the floor plate 7B.

Thus, according to the present embodiment, the seat three-dimensional skin 17 on the seat frame 14 of the seat frame 13 and the seat air outlet 1 for blowing the conditioned air toward the three-dimensional skin 17.
9 is attached, the conditioned air can be blown to the operator's buttocks, thighs, etc. by utilizing the breathability of the three-dimensional skin 17. Since the backrest frame 15 is provided with the backrest three-dimensional skin 18 and the backrest outlet 22 for blowing conditioned air toward the three-dimensional skin 18, the three-dimensional skin 18 is provided.
The conditioned air can be blown to the operator's back or the like by utilizing the breathability of the. Therefore, unlike the prior art, it is not necessary to form a through hole in a part of the cushion material, to provide a large number of small holes in the outer skin, or to separately sew a mesh member, thereby simplifying the configuration of the driver's seat 11. Therefore, the manufacturing cost can be reduced.

Moreover, since the seat blow-out port 19 is attached to the seat frame 14 with a clearance obtained by adding the clearance A2 for the depression to the depression A of the seat three-dimensional skin 17, the operator has a seat three-dimensional skin. Even when the user sits on the seat 17, it is possible to prevent the buttocks and the like from coming into contact with the seat air outlet 19 through the three-dimensional skin 17.

Further, since the backrest outlet 22 is attached to the backrest frame 15 with a clearance obtained by adding a clearance B2 for the depression to the depression B1 of the three-dimensional skin 18 for the backrest, the operator's back is used for the backrest. It is possible to prevent contact with the backrest outlet 22 through the three-dimensional skin 18.

As a result, the operator sitting in the driver's seat 11 does not feel uncomfortable, and the operator can be provided with a comfortable sitting comfort.

Further, since the air outlets 19 and 22 are formed as a thin box body, they can be easily arranged in a narrow space below the seat three-dimensional skin 17 and the back three-dimensional skin 18. The degree of freedom in design can be improved.

The opening 19A of the seat outlet 19 is formed smaller than the area of the seat three-dimensional skin 17, and the opening 22A of the backrest outlet 22 is formed of the back three-dimensional skin 1.
Since it is formed smaller than the area of 8, the conditioned air blown out from the small outlets 19 and 22 can be supplied in a wide range.

On the other hand, the drainage holes 2 are provided at the outlets 19 and 22.
Since 0 and 23 are provided, it is possible to protect the air conditioning unit 10 from moisture by draining the moisture that has entered the air outlets 19 and 22, and it is possible to extend the life of the air conditioning unit 10 and improve its reliability. .

Further, even when working outdoors in high temperatures in summer or in low temperatures in winter, the air outlets 19 and 22 can cool the air from the air conditioning unit 10 without being obstructed by the wind.
The warm air can be blown directly to the operator's buttocks, thighs, back, etc., and the operator can be provided with a comfortable working environment. Thereby, the work efficiency of the hydraulic excavator 1 can be improved.

Next, FIGS. 7 and 8 show a second embodiment of the present invention. The feature of the present embodiment is that the three-dimensional skin is partially provided in the frame of the seat frame, and the air outlet is arranged at a position corresponding to the partially provided three-dimensional skin. In addition, in the present embodiment, the same components as those in the first embodiment described above are designated by the same reference numerals, and the description thereof will be omitted.

Reference numeral 31 denotes a driver's seat according to the present embodiment. The driver's seat 31 includes a seat frame 32, pads 36,
39, epidermis 37, 40, three-dimensional epidermis 38, 41, outlet 4
2, 45 and the like.

Reference numeral 32 denotes a seat frame which forms the skeleton of the driver's seat 31, and the seat frame 32 is, as shown in FIG.
A backrest frame portion 34 serving as a backrest frame having a substantially central opening, and left and right support members 35, 35 that support the backrest frame portion 34 on the seat frame portion 33.

Reference numeral 36 denotes a seat pad provided on the seat frame portion 33. The seat pad 36 is made of, for example, a urethane foam material, and has a rectangular ventilation hole 36A penetrating in the thickness direction at a substantially central portion thereof. Has been formed.

A seat skin 37 is attached to the seat frame portion 33 so as to cover the seat pad 36. The seat skin 37 is formed of, for example, moquette, leather, or the like, and the vent hole 36A of the seat pad 36 is formed. The part corresponding to is cut out.

The reference numeral 38 designates a seat three-dimensional skin provided substantially at the center of the seat skin 37. The seat three-dimensional skin 38 is shown in FIG.
Has the same structure and properties as the three-dimensional skins 17 and 18 described in the first embodiment. The periphery of the seat three-dimensional skin 38 is sewn to the seat skin 37 so as to close the vent hole 36A of the seat pad 36, and is attached to the seat frame portion 33 via the seat skin 37. ing.

Reference numeral 39 is a backrest pad provided on the backrest frame portion 34. The backrest pad 39 is
For example, it is made of a urethane foam material, and a rectangular ventilation hole 39A penetrating in the thickness direction is formed at substantially the center.

Reference numeral 40 denotes a backrest skin which is attached to the backrest frame portion 34 so as to cover the backrest pad 39. The backrest skin 40 is formed of, for example, moquette, leather or the like, like the seat skin 37. A portion of the backrest pad 39 corresponding to the ventilation hole 39A is cut out.

Reference numeral 41 denotes a backrest three-dimensional skin provided substantially at the center of the backrest skin 40. The backrest three-dimensional skin 41 is similar to the three-dimensional skins 17, 18 described in the first embodiment with reference to FIG. Has structure and properties. And
The backrest three-dimensional skin 41 is sewn around the backrest skin 40 so as to close the ventilation hole 39A of the backrest pad 39, and is attached to the backrest frame portion 34 via the backrest skin 40. .

Reference numeral 42 denotes a seat outlet which is horizontally attached to the lower surface of the central portion of the seat frame portion 33 so as to correspond to the vent hole 36A of the seat pad 36, and the seat outlet 42 is located at the upper side (seat). The rear side of the three-dimensional outer skin 38) is the opening 4
It is formed as a thin box body of 2 A, and is connected to the air conditioning unit 10 via the bellows pipe 26 and the supply pipe 25.

Further, the seat outlet 42 is arranged with a clearance for allowing the seat solid skin 38 to sink into the seat solid skin 38. Specifically, the seat outlet 42 and the seat three-dimensional skin 38 are shown in FIG.
As indicated by the chain double-dashed line, an upper and lower clearance C1 and a clearance C2 corresponding to the depression of the seat skin 37 and the seat three-dimensional skin 38 when the operator is seated in the driver's seat 31. It is arranged with. Furthermore, the opening 42A of the seat outlet 42 is formed smaller than the area of the seat three-dimensional skin 38.

Reference numeral 43 denotes a water drain hole provided in the seat outlet 42, and a drain hose 44 is connected to the water drain hole 43.

Reference numeral 45 is a vent hole 39 of the backrest pad 39.
An air outlet for a backrest vertically attached to the central portion rear surface side of the backrest frame portion 34 so as to correspond to A. The air outlet 45 for the backrest is a front side (a three-dimensional skin 41 for the backrest).
The rear side) of the air conditioning unit 1 is formed as a thin box body having the opening 45A, and the air conditioning unit 1 is provided via the bellows pipe 27 and the supply pipe 25.
It is connected to 0.

Further, the backrest outlet 45 is provided with a gap for allowing the backrest three-dimensional skin 41 to sink into the backrest three-dimensional skin 41. Specifically, the backrest outlet 45 and the backrest three-dimensional skin 41 are, as shown by the chain double-dashed line in FIG. 8, the backrest skin 40 when the operator sits on the driver's seat 31 and leans back. It is provided with a front and rear clearance D1 and a clearance D2 corresponding to the sinking of the backrest three-dimensional skin 41. In addition, the back outlet 4
The opening 45 </ b> A of No. 5 is formed smaller than the area of the backrest three-dimensional skin 41.

Reference numeral 46 is a drain hole provided in the back outlet 45, and a drain hose 47 is connected to the drain hole 46.

Reference numeral 48 denotes a headrest attached to the upper portion of the backrest frame portion 34, and 49 and 49 denote armrests attached to the left and right sides of the backrest frame 34.

Thus, also in the present embodiment having such a configuration, it is possible to obtain substantially the same operational effects as those of the first embodiment described above.

However, according to the present embodiment, the amount of expensive three-dimensional skins 38 and 41 used can be suppressed to a small amount as compared with the general skins 37 and 40, so that the manufacturing cost can be reduced. You can Moreover, the three-dimensional skin 38,4
Since No. 1 itself has a cushioning property, even when the back surface side is the ventilation holes 36A, 39A of the pads 36, 39, it does not largely sink. As a result, it is possible to eliminate the uncomfortable feeling when sitting in the driver's seat 31 and improve the sitting comfort.

Next, FIG. 9 shows a third embodiment of the present invention. A feature of the present embodiment is that the seat frame and the backrest frame of the seat frame are integrally formed, and one solid skin is attached to the integrated seat frame. In addition, in the present embodiment, the same components as those in the first embodiment described above are designated by the same reference numerals, and the description thereof will be omitted.

51 is a driver's seat according to the present embodiment, 52 is a skeletal seat frame, and the seat frame 52
Is formed by, for example, bending a circular pipe material into a long rectangular frame body, and bending the frame body at a substantially central portion in the length direction. As a result, the seat frame 52 is configured by a seat frame 53 that extends laterally and a backrest frame 54 that bends upward from a rear portion of the seat frame 53 and extends vertically, and the backrest frame 54. Is fixed.

Reference numeral 55 denotes a three-dimensional skin attached to the seat frame 52 (shown by a chain double-dashed line in FIG. 9).
5 has the same structure and properties as the three-dimensional skins 17 and 18 described in the first embodiment. Also, the three-dimensional skin 55
Has a substantially strip shape in the unfolded state, and one sheet constitutes a seat three-dimensional skin and a backrest three-dimensional skin.

Thus, in this embodiment having the above-described structure, it is possible to obtain substantially the same operational effects as those of the first embodiment, but in particular, according to this embodiment, the seat frame is used. 52 and the three-dimensional skin 55 can be easily configured with a small number of parts, and the driver's seat 51 can be manufactured at low cost.

In the first embodiment, the seat three-dimensional skin 17 and the seat outlet 19 are attached to the seat frame 14 of the seat frame 13, and the back three-dimensional skin 18 and the back outlet 22 are attached to the back frame 15. However, the present invention is not limited to this, and the seat three-dimensional skin 17 and the seat air outlet 19 may be attached only to the seat frame 14. Further, the backrest three-dimensional skin 18 and the backrest outlet 22 may be attached only to the backrest frame 15. This structure can be similarly applied to the second and third embodiments.

Also, the headrest 28 and the armrest 2
It is also possible to provide a three-dimensional skin and an outlet in 9 to supply conditioned air to the operator's head, arm, and the like. This structure can be similarly applied to the second and third embodiments.

Further, in the first embodiment, the drain hole 20 is formed in the seat outlet 19 and the drain hose 21 is used.
The case where the drainage hose 24 is attached to the backrest outlet 22 and the drainage hose 24 is attached has been described as an example, but the present invention is not limited to this. For example, only the seat outlet 19 is provided. Drain hole 20, drain hose 21
May be provided, and the drain hole 23 and the drain hose 24 may be eliminated from the backrest outlet 22. Further, the drain holes and the drain hose may be eliminated from both of the outlets 19 and 22. This structure can be similarly applied to the second and third embodiments.

On the other hand, in the first embodiment, the driver's seat 11
Although the headrest 28 that is separate from the seat frame 13 is provided in the above, the present invention is not limited to this, and the upper portion of the backrest frame 15 of the seat frame 13 is projected upward, and the headrest 28 is integrated by the projection. Head restraints may be configured. This structure can be similarly applied to the second and third embodiments.

Further, in each of the embodiments, the case where the driver's seat is provided in the cab 7 of the hydraulic excavator 1 has been described as an example, but the present invention is not limited to this, and for example, a hydraulic crane,
The invention may be applied to other working machines having a driver's seat such as a forklift and a cultivator, and may also be applied to a working machine having a driver's seat exposed to the outside without a cab.

[0099]

As described in detail above, according to the first aspect of the invention, the driver's seat is located on the backrest frame of the seat frame on the back side of the three-dimensional skin for the backrest and is open to the skin side. A backrest outlet is provided with a gap between the backrest three-dimensional skin and the backrest outlet is connected to an air conditioning unit that supplies conditioned air.

Therefore, since the three-dimensional skin for the backrest has the cushioning property, the sitting comfort can be improved without using a separate cushion material. Further, since the three-dimensional skin itself has sufficient air permeability, it is not necessary to provide a small hole for ventilation or to sew a net member separately, and the configuration is simplified and the driver's seat is manufactured at low cost. be able to.

Further, since the backrest outlet is provided in the backrest frame with a gap between the backrest and the three-dimensional skin for the backrest, even when the operator sits in the driver's seat and leans against the three-dimensional skin for the backrest, the backrest is used for the backrest. It is possible to reduce or prevent the contact between the three-dimensional skin and the outlet for the backrest, and to improve the sitting comfort in this respect as well.

According to the invention of claim 2, in the driver's seat, the seat frame of the seat frame is located on the back side of the seat three-dimensional skin and is open to the skin side, and there is a gap between the seat and the three-dimensional skin for seat. Is provided with a seat outlet, and the seat outlet is connected to an air conditioning unit that supplies conditioned air. Therefore, as in the case of the first aspect described above, it is possible to inexpensively provide a driver's seat having a good sitting comfort with respect to the seat three-dimensional skin.

According to the third aspect of the present invention, the driver's seat is located in the seat frame of the seat frame on the back side of the seat three-dimensional skin and opens toward the skin, and a gap is formed between the seat frame and the seat three-dimensional skin. With a seat outlet, the back frame of the seat frame is provided on the back side of the three-dimensional skin for the backrest and is opened to the skin side, and a backrest outlet is provided with a gap between the three-dimensional skin for the backrest, The seat outlet and the backrest outlet are connected to an air conditioning unit that supplies conditioned air. Therefore, as is the case with the first and second aspects described above, it is possible to provide at low cost a driver's seat that has a good sitting comfort with respect to the seat three-dimensional skin and the backrest three-dimensional skin.

According to the fourth aspect of the present invention, the three-dimensional skin is partially provided in the frame of the seat frame, and the air outlet is arranged at a position corresponding to the partially provided three-dimensional skin. Therefore, it is possible to reduce the amount of the expensive three-dimensional skin used compared to the skin generally used in the driver's seat, and to reduce the manufacturing cost. Also,
Since the three-dimensional skin has a cushioning property, even if the back surface side is a through hole, it does not largely sink and the sitting comfort can be improved.

According to the fifth aspect of the present invention, since the air outlet is formed as a thin box body in which the back surface side of the three-dimensional skin is opened, the narrow space below the three-dimensional skin for seats and the three-dimensional skin for backrest is narrow. Air outlets can also be placed in places.

According to the sixth aspect of the present invention, the air outlet is formed as a thin box having an opening on the back side of the three-dimensional skin, and the opening of the air outlet is formed smaller than the area of the three-dimensional skin. The conditioned air blown out from the air outlet can be supplied in a wide range through a wide three-dimensional skin.

According to the seventh aspect of the present invention, the gap between the three-dimensional skin and the outlet is set to a dimension that allows the three-dimensional skin to sink, so that the operator is seated in the driver's seat. Even when the three-dimensional skin sinks, it is possible to prevent the three-dimensional skin from coming into contact with the air outlet.

According to the eighth aspect of the present invention, since the water outlet has a drain hole for discharging the intruding water, even if the water intrudes into the air outlet, this water flows to the air conditioning unit side. It can be drained from the drainage hole before it dents, extending the life of the air conditioning unit and improving its reliability.

According to the ninth aspect of the present invention, at least one of the seat frame and the backrest frame of the seat frame is located on the back side of the three-dimensional skin and is open to the skin side, and the three-dimensional skin is formed. The air outlet is provided with a gap between the air outlets, and the air outlet is connected to an air conditioning unit that supplies conditioned air.

Therefore, even when work is performed in summer with a high temperature or in winter with a low temperature, the outlet has cold air and warm air from the air conditioning unit on the buttocks, thighs, and thighs of the operator seated in the driver's seat.
It can be sprayed on the back and the like, providing a comfortable working environment for the operator and improving the working efficiency of the working machine.

Moreover, even if the three-dimensional skin of the driver's seat largely sinks due to vibrations during work or traveling, the gap between the blow-out port and the three-dimensional skin has a gap between the blow-out port and the three-dimensional skin due to the sinking at this time. It is possible to prevent contact with the vehicle and eliminate a feeling of discomfort in a sitting posture during work and traveling.

[Brief description of drawings]

FIG. 1 is a front view showing a hydraulic excavator applied to a first embodiment of the present invention.

FIG. 2 is an enlarged perspective view showing the inside of the cab in FIG.

FIG. 3 is an external perspective view showing an enlarged driver's seat.

FIG. 4 is an external perspective view showing the driver's seat with the three-dimensional skin removed.

5 is a cross-sectional view of a driver's seat as seen from the direction of arrows VV in FIG.

FIG. 6 is a partially cutaway external perspective view showing an enlarged structure of a three-dimensional skin.

FIG. 7 is an external perspective view showing a driver's seat according to a second embodiment of the present invention.

8 is a cross-sectional view of the driver's seat as viewed in the direction of arrows VIII-VIII in FIG. 7.

FIG. 9 is an external perspective view showing a driver's seat according to a third embodiment of the present invention.

[Explanation of symbols]

1 Hydraulic excavator (working machine) 2 Lower traveling body (car body) 3 Upper revolving structure (body) 7 Cab 10 Air conditioning unit 11, 31, 51 Driver's seat 13, 32, 52 Seat frame 14 Seat frame 15 Backrest frame 17, 38 seats 3D skin 17A Surface mesh layer 17B Back mesh layer 17C Pile 18,41 Back three-dimensional skin 19,42 Seat outlet 19A, 22A, 42A, 45A Opening 20,23,43,46 Drain hole 22,45 Backrest Air outlet 25 Supply pipes 26, 27 Bellows pipe 33 Seat frame part (seat frame) 34 Back frame part (back frame) 55 Three-dimensional skin A1, B1, C1, D1 Gap A2, B2 corresponding to sinking of three-dimensional skin , C2, D2 clearance

Continued front page    (72) Inventor Masahisa Yamanaka             Hitachi Construction Machinery Co., Ltd.             Ceremony Company Tsuchiura Factory (72) Inventor Hiroyuki Nishimori             Hitachi Construction Machinery Co., Ltd.             Ceremony Company Tsuchiura Factory F-term (reference) 2D015 EB01 EC01                 3B087 CC00 DE10                 3L011 BV01

Claims (9)

[Claims] 1. A seat frame comprising a seat frame and a back frame provided on the rear side of the seat frame, and a large number of piles between a front mesh layer and a back mesh layer attached to the back frame of the seat frame. In a driver's seat comprising a three-dimensional backrest three-dimensional skin intervening with, the backrest frame of the seat frame is located on the back surface side of the backrest three-dimensional skin and opens to the skin side, A driver's seat characterized in that a backrest outlet is provided with a gap between the backrest three-dimensional skin and the backrest outlet is connected to an air conditioning unit that supplies conditioned air. 2. A seat frame comprising a seat frame and a backrest frame provided on the rear side of the seat frame, and a large number of piles between the front mesh layer and the back mesh layer attached to the seat frame of the seat frame. In a driver's seat comprising a three-dimensional seat skin that is three-dimensionally woven with the interposition of, a seat frame of the seat frame is located on the back side of the seat three-dimensional skin and is open to the skin side. A driver's seat characterized in that a seat outlet is provided with a gap between the seat three-dimensional skin and the seat outlet is connected to an air conditioning unit that supplies conditioned air. 3. A seat frame comprising a seat frame and a backrest frame provided on the rear side of the seat frame, and a large number of piles between the front mesh layer and the back mesh layer attached to the seat frame of the seat frame. In a driver's seat including a three-dimensional skin for seats woven three-dimensionally with the interposition of, and a three-dimensional skin for backrest attached to the backrest frame, the seat frame of the seat frame includes the three-dimensional skin for seats. Located on the back side and opening to the skin side, a seat outlet is provided with a gap between the seat three-dimensional skin, and the back frame of the seat frame is located on the back side of the back three-dimensional skin. A backrest outlet is provided with a gap between the seatback and the three-dimensional backrest skin, and the seat outlet and the backrest outlet are connected to an air conditioning unit that supplies conditioned air. The driver's seat characterized by what was done. 4. The three-dimensional skin is partially provided in the frame of the seat frame, and the air outlet is arranged at a position corresponding to the three-dimensional skin partially provided. Driver's seat described in 3. 5. The air outlet is formed as a thin box having an opening on the back side of the three-dimensional skin.
Or the driver's seat described in 4. 6. The air outlet is formed as a thin box having an opening on the back side of the three-dimensional skin, and the opening of the air outlet is formed smaller than the area of the three-dimensional skin.
Driver's seat described in 2, 3 or 4. 7. The gap between the three-dimensional skin and the air outlet is
The driver's seat according to claim 1, 2, 3, 4, 5 or 6, which is set to a size that allows the three-dimensional skin to sink. 8. The water outlet is provided with a water draining hole for discharging water that has entered the air outlet.
The driver's seat described in 4, 5, 6 or 7. 9. A seat frame including a seat frame and a backrest frame provided on the rear side of the seat frame, and a surface mesh attached to at least one of the seat frame and the backrest frame of the seat frame. Work having a driver's seat constituted by a three-dimensional skin woven three-dimensionally with a large number of piles interposed between the layer and the back mesh layer, and the driver's seat having the driver's seat attached to the vehicle body In the machine, at least one of the seat frame and the backrest frame of the seat frame is located on the back side of the three-dimensional skin and is open to the skin side, and there is a gap between the air outlet and the three-dimensional skin. A working machine having a driver's seat, characterized in that the air outlet is connected to an air conditioning unit for supplying conditioned air.