JP2003250659A - 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 are attached to a back frame 15. Consequently, adjusted air is blown to an operator through each blow-out port 19, 22 by utilizing the ventilation property of the three-dimensional surface skins 17, 18. Moreover, since the blow-out port 19 for seat and the blow-out port 22 for the back are formed of a rubber material or the like having flexibility, the seat can be easily deformed in accordance with depressing of respective three-dimensional surface skins 17, 18 to suppress sense of incongruity when seated and provide the operator with 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]

According to a first aspect of the present invention, there is provided a driver's seat including a seat frame and a back frame provided on the rear side of the seat frame, a seat frame of the seat frame and a back frame. And a three-dimensional skin woven three-dimensionally with a large number of piles interposed between the front surface mesh layer and the back surface mesh layer, which is attached to at least one of the frames.

Then, in order to solve the above-mentioned problems,
A feature of the configuration adopted by the invention according to claim 1 is that at least one of a seat frame and a 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 is flexible. In some cases, a blowout port made of a flexible soft material is provided, and the blowout port is connected to an air conditioning unit that supplies conditioned air.

With this structure, the three-dimensional skin for the backrest including the front surface mesh layer, the back surface mesh layer and the multiple piles is attached to the seat frame of the seat frame, the back frame or both the seat frame and the back frame. Thereby, the sitting comfort can be improved by the cushioning property of the three-dimensional skin 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, so that the structure can be simplified.

Further, since the air outlet is formed of a soft material having flexibility, even when the operator sits in the driver's seat and the three-dimensional skin sinks, the blow-out is blown according to the sinking of the three-dimensional skin. The outlet can be deformed, and discomfort when sitting can be eliminated.

According to the second 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 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 third aspect of the present invention, since the air outlet is formed as a box whose rear surface side of the three-dimensional skin is open, and the opening of the air outlet is formed smaller than the area of the three-dimensional skin, the air is blown out from the small air outlet. The conditioned air can be supplied to a wide range through a wide three-dimensional skin.

According to the invention of claim 4, 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,
It can be drained from the drain hole before flowing into the air conditioning unit side.

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

In order to solve the above-mentioned problems,
A feature of the configuration adopted by the invention according to claim 5 is that 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 is flexible. A blowout port made of a flexible soft material is provided, and the blowout port is connected to an air conditioning unit that supplies conditioned air.

With this configuration, even when work is performed in summer when the temperature is high or in the winter when the temperature is low, the air outlet is provided with the cold and warm air from the air conditioning unit on the buttocks and 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 air outlet made of a soft material having flexibility can be greatly deformed according to the sinking at this time. It is possible to eliminate a feeling of strangeness in a sitting posture during work and traveling.

[0024]

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 for covering the periphery and a floor plate 7B for 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 according to the present embodiment provided in the cab 7, and the driver's seat 11 is arranged on a 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 (not 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 is a seat frame that 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, 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, and 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 which 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 outlet 19 is formed in a box shape by using a soft material having flexibility, such as a rubber material or a resin material, and the bracket 14 of the seat frame 14 is provided.
It is attached to E and 14F in a substantially horizontal direction. Also,
The upper portion of the seat blow-out port 19 extends to near the back surface side of the seat three-dimensional skin 17 to form an opening 19A, the lower side of the seat blow-out port 19 is inclined toward the front side and has a shallow bottom, and the rear side portion thereof is directed toward the center portion. The bottom surface portion 19B has a concave shape. Furthermore, a connection pipe 19D is provided on the rear surface portion 19C so as to extend rearward, and the connection pipe 19D includes a supply pipe 25 and a bellows pipe 2 which will be described later.
It is connected to the air conditioning unit 10 via 6.

Here, an operator seats the operator at the driver's seat 11 and the three-dimensional outer skin 17 for seat is shown in FIG. 5 at the seat outlet 19 which is formed in a box shape using a flexible rubber material or resin material. When it sinks to the lower side as shown by the two-dot chain line, it can be easily deformed in accordance with the sinking of the seat three-dimensional skin 17. As a result, the operator can sit down with a good sitting comfort without feeling discomfort in the buttocks, thighs and the like.

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 drain 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 the conditioned air from the air conditioning unit 10 onto the operator's back. The backrest outlet 22 is made of a soft material having flexibility, such as a rubber material,
The backrest frame 15 is formed in a box shape using a resin material or the like.
The brackets 15E and 15F are mounted in a substantially vertical direction. The front side of the backrest outlet 22 extends to the vicinity of the backside of the backrest three-dimensional skin 18, and the opening 22 is provided.
A, the rear side is a bottom surface portion 22B having a mountain shape in which a middle portion near the lower side is projected, and the lower side is a lower surface portion 22C recessed in a funnel shape toward the central portion. 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 formed in a box shape using a flexible rubber material or resin material.
Is leaning against the operator seated in the driver's seat 11,
When the three-dimensional skin 18 for backrest sinks to the rear side as shown by the chain double-dashed line in FIG. 5, it can be easily deformed according to the sinking of the three-dimensional skin 18 for backrest.
As a result, the operator can sit down with a good sitting comfort without feeling uncomfortable on the back or the like.

Further, 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 draining hole provided in the backrest outlet 22, and the water draining 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 whose other end is branched into two, and 26 is a supply pipe 25.
The bellows pipe connected between the branch end of the seat and the connecting pipe 19D of the seat outlet 19, and 27 is the bellows pipe connected between the branch end of the supply pipe 25 and the connecting pipe 22D of the back outlet 22. The supply duct 25 and the bellows ducts 26 and 27 constitute a ventilation duct. Here, the bellows tube 26 is the driver's seat 1
This is to absorb the positional deviation in the front and rear directions, etc., which occurs between the connecting pipe 19D and the supply pipe 25 when the position of 1 is adjusted in the front and rear directions. Further, the bellows tube 27 serves as the connection tube 22D and the supply tube 2 when the backrest angle of the driver's seat 11 is adjusted.
It absorbs the displacement in the oblique direction between the position and the position 5.

Further, as shown in FIG. 3, 28 is a headrest mounted on 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 into 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.

During the above-mentioned work, the air conditioning unit 10 is started according to 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 a proper 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.
The cold air supplied to the driver's seat 11 is supplied to the supply pipe 25,
It circulates toward the seat outlet 19 through the bellows pipe 26, is blown from the opening 19A of the seat outlet 19, passes through the seat three-dimensional skin 17, and is blown to the buttocks and thighs of the operator. This makes it possible to cool the operator's buttocks and thighs that are in close contact with the three-dimensional seat skin 17 with cold air.

On the other hand, a part of the cool air is also supplied to the backrest outlet 22 via 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. It passes through the three-dimensional skin 18 and is sprayed on the operator's back. As a result, the three-dimensional skin for backrest 1
The operator's back closely attached to 8 can also be cooled by cold air.

As described above, the seat air outlet 19 and the backrest air outlet 22 can directly blow cold air or warm air to the operator seated in the driver's seat 11, so that the temperature in the summer or high temperatures is high. 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
There is a case where it greatly sinks due to vibration during traveling, but even in such a case, the air outlets 19, 22 made of a soft material
Can be largely deformed according to the depression at this time, and the discomfort in the sitting posture can be eliminated.

In rainy weather, an operator may sit on the driver's seat 11 or eat and drink in the cab 7 with rainwater or the like still attached to clothes, and the water content such as rainwater or drinking water may drive the operator. 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 and the seat outlet 1 for blowing conditioned air toward the three-dimensional skin 17 on the seat frame 14 of the seat frame 13.
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, 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 sew a net member separately as in the prior art, so that the structure of the driver's seat 11 is simplified. The manufacturing cost can be reduced.

Moreover, since the seat outlet 19 is made of a flexible rubber material or the like, the seat outlet 19 can be easily deformed in accordance with the sinking of the seat three-dimensional skin 17. , Operator's seat 3D skin 1
It is possible to suppress the discomfort when sitting on 7.

Further, since the backrest outlet 22 is made of a flexible rubber material or the like, the backrest outlet 2 is formed in accordance with the sinking of the backrest three-dimensional skin 18.
2 can be easily deformed, and an uncomfortable feeling when the operator leans against the backrest three-dimensional skin 18 can be suppressed.

Moreover, even when the three-dimensional skins 17, 18 largely sink due to vibrations during work or traveling, the outlets 19, 22 can be largely deformed in accordance with the sinking at this time. You can eliminate the discomfort in the sitting posture.

As a result, the seat outlet 19 and the backrest outlet 22 do not give an uncomfortable feeling to the operator sitting in the driver's seat 11, so that the operator can be provided with a comfortable sitting comfort.

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 drain 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. .

Furthermore, even when working outdoors in summer with high temperature or in winter with low temperature, 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 is 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 has a seat frame portion 33 as a seat frame having a substantially central opening 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 vent hole 36A penetrating in the thickness direction at substantially the center 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 made 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.

Reference numeral 38 denotes a seat three-dimensional skin provided substantially in 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 made of, for example, moquette, leather, etc., 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 which is provided substantially at the center of the backrest skin 40. The backrest three-dimensional skin 41 is similar to the three-dimensional skins 17 and 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 air outlet 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. The seat air outlet 42 is an air conditioning unit. The conditioned air from 10 is blown to the operator's buttocks and thighs, and is formed in a box shape using a flexible rubber material, resin material, or the like. The upper side of the seat outlet 42, which is the back side of the seat three-dimensional skin 38, is an opening 42A, and is connected to the air conditioning unit 10 via the bellows pipe 26 and the supply pipe 25.

The seat outlet 42 made of a flexible rubber material or the like is used when the seat skin 37 and the three-dimensional skin 38 are sunk downward as shown by the chain double-dashed line in FIG. It can be easily deformed according to the sinking of the seat three-dimensional skin 38. 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 is a drain hole provided in the seat outlet 42, and a drain hose 44 is connected to the drain hole 43.

45 is a ventilation hole 39 of the back pad 39.
An air outlet for a backrest vertically attached to the rear surface side of the central portion of the backrest frame portion 34 corresponding to A. The air outlet 45 for the backrest blows the conditioned air from the air conditioning unit 10 to the operator's back or the like. It is attached and is formed in a box shape using a flexible rubber material, resin material or the like. Further, the backrest outlet 45 has an opening 45A on the front side which is the back side of the backrest three-dimensional skin 41.
It is connected to the air conditioning unit 10 via the bellows pipe 27 and the supply pipe 25.

The backrest outlet 45 made of a flexible rubber material or the like is used when the backrest skin 40 and the three-dimensional skin 41 are sunk to the rear side as shown by the chain double-dashed line in FIG. It can be easily deformed according to the sinking of the backrest three-dimensional skin 41. Furthermore, the opening 45A of the backrest outlet 45 is formed by the backrest three-dimensional skin 4.
It is formed smaller than the area of 1.

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

Reference numeral 51 is a driver's seat according to the present embodiment, 52 is a skeletal seat frame.
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 provided with a seat frame 53 extending laterally,
The seat frame 53 includes a backrest frame 54 that is bent upward from the rear portion of the seat frame 53 and extends in the vertical direction.
Is fixed.

Reference numeral 55 denotes a three-dimensional skin (illustrated by a chain double-dashed line in FIG. 9) attached to the seat frame 52.
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. Particularly, according to the present 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.

Further, 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 formed.
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 hydraulic excavator 1 having the driver's seats 11, 31, 51 inside the cab 7 was described as an example of the working machine having the driver's seat, but the present invention is not limited to this. Not limited thereto, for example, it may be applied to other working machines having a driver's seat such as a hydraulic crane, forklift, cultivator, etc., and may also be applied to a working machine having a driver's seat exposed to the outside without a cab. .

[0090]

As described above in detail, according to the invention of claim 1, the driver's seat has at least one of the seat frame and the backrest frame on the back side of the three-dimensional skin. A blower outlet made of a soft material having flexibility and being located on the skin side is provided, and the blower outlet is connected to an air conditioning unit for supplying conditioned air. Therefore,
Since the air outlet is made of a soft material having flexibility, even when the operator sits in the driver's seat and the three-dimensional skin sinks, it can be deformed according to the sinking of the three-dimensional skin, and the seating It is possible to eliminate the discomfort of time and improve the sitting comfort.

According to the second 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 three-dimensional skin partially provided. 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 third aspect of the present invention, the air outlet is formed as a box whose rear side is open, and the opening of the air outlet is formed smaller than the area of the three-dimensional skin. The blown conditioned air can be supplied to a wide range through a wide three-dimensional skin.

According to the fourth 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, the 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 invention of claim 5, in the working 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 opened to the skin side. An outlet made of a soft material having flexibility is provided, and the outlet is connected to an air conditioning unit that supplies conditioned air.

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

Moreover, even if the three-dimensional skin of the driver's seat largely sinks due to vibrations during work or running, the outlet made of a soft material having flexibility is greatly deformed according to the sinking at this time. Therefore, it is possible to eliminate the uncomfortable feeling in the 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 Undercarriage (car body) 3 Upper revolving structure (car body) 7 cabs 10 Air conditioning unit 11,31,51 Driver's seat 13,32,52 seat frame 14,53 seats 15,54 Back frame 17,38 seat three-dimensional skin 17A Surface mesh layer 17B Back side mesh layer 17C pile 18,41 Three-dimensional skin for backrest 19,42 seat outlet 19A, 22A, 42A, 45A Opening 20,23,43,46 Drain hole 22,45 Back outlet 25 supply pipe 26,27 bellows tube 33 Seat frame section (seat frame) 34 Back frame part (back frame) 55 three-dimensional skin

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Kazunori Komatsu             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) 3B084 JA02 JA05 JG02 JG06                 3B087 DE05 DE10                 3L011 BV01

Claims (5)

[Claims] 1. A seat frame comprising 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. In a driver's seat including a three-dimensional skin woven three-dimensionally with a large number of piles interposed between the layer and the back mesh layer, at least one of a seat frame and a backrest frame of the seat frame The frame is provided with a blowout port which is located on the back side of the three-dimensional skin and opens to the skin side and is made of a soft material having flexibility, and the blowout port is connected to an air conditioning unit for supplying conditioned air. The driver's seat characterized by. 2. 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. driving seat. 3. The blow-out opening is formed as a box having an opening on the back side of the three-dimensional skin, and the opening of the blow-out opening is formed smaller than the area of the three-dimensional skin.
Driver's seat described in. 4. The driver's seat according to claim 1, wherein the air outlet is provided with a water draining hole for discharging water that has entered the air outlet. 5. 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 provided with an outlet port made of a soft material having flexibility and located on the back surface side of the three-dimensional skin and opening on the skin side. 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.