JP2022160183A - Blowing chair - Google Patents

Abstract

To provide a chair which gives refreshing feeling to a sitter by performing an indirect blow blowing surroundings the sitter and circulating the air inside a back surface part.SOLUTION: A chair arranges a pair of left and right main blow pipes 63, 63 in a vertical direction in a back surface part 2, and has: a blow mechanism of a back surface part outer blow that has an opening 65 opening forward from the main blow pipes 63; and a blow mechanism of a flow in the back surface part blowing to the back surface part 2 from a plurality of sub blow pipes 64, 64 extending inward horizontally to the main blow pipe 63. It is possible to give a sitter refreshing feeling more than when the cool air is blown out by performing indirect blowing in which the air in the back surface part is pulled by the back surface part external blow and slowly and gradually comes out in the form of mists from the back surface part 2 surface.SELECTED DRAWING: Figure 1

Description

The present invention relates to a chair having an indirect ventilation function.

As a chair whose temperature can be adjusted by blowing air to the back, Patent Document 1 discloses a driver's seat comprising a three-dimensional skin, a cushion material, and a seat frame, and having an air outlet formed in the seat frame. The seat frame consists of a seat frame that is a square hollow frame with a ventilation channel inside, and a backrest frame that is a square hollow frame with a ventilation channel inside. The blast pipe is extended, and the end of the blast pipe is directed toward the back side of the three-dimensional skin to form an air outlet. There is also a temperature-adjusting chair equipped with heating by a heater and cooling by blowing air from a ventilation hole, as in Patent Document 2.

Japanese Patent Application Laid-Open No. 2003-250660 Japanese Utility Model Laid-Open No. 60-115052

The driver's seat of Patent Literature 1 is for automobiles, and has an air outlet directed toward a three-dimensional skin, and has an effect of efficiently blowing air to a seated person. Chairs equipped with such an air-conditioning mechanism have existed in the past, but they were designed to blow cold air directly toward the seated person. Such direct air blowing is highly effective in directly cooling the seated person, but the seated person may feel discomfort due to the direct blowing of cold air. was sought.

Therefore, the present invention is not connected to a cooling device to directly inject cool air or warm air from the back portion directly to the seated person, but is an indirect air blower that circulates the air in the room and blows air around the seated person. To provide a chair giving a refreshing feeling to a seated person by blowing air for circulating the air in the back part.

The chair of the present invention has a seat portion and a back portion, and has an indirect air blowing mechanism capable of blowing air into the back portion and blowing air out of the back portion, wherein the blowing mechanism supplies outside air. It has a driving section for blowing air to a main blowing duct, a pair of left and right main blowing ducts vertically arranged from the driving section into the back portion, and an opening facing forward in the main blowing duct. A blower mechanism for blowing air to the outside of the rear portion, and a blower mechanism for blowing air to the inside of the rear portion, which has a plurality of sub-blower pipes extending inwardly to the left and right of the main blow pipe, and blows air to the rear portion from tip openings of the sub-blower pipes; It is characterized by having

Moreover, it is preferable that the air blowing mechanism is arranged between a low air-permeable layer arranged in the back base portion in the back portion and a high air-permeable layer arranged inside the outer skin material of the back portion.

In addition, it has an electric heating mechanism arranged in the seat part and the backrest part of the back part, and the main blowing pipe of the blowing mechanism is a middle pipe part arranged in the box-shaped back base and exposed from the back base. and an upper pipe portion, wherein the exposure position where the main air duct is exposed from the rear base portion is preferably located above the electric heating mechanism of the rear portion.

In addition, it is preferable that the air supply position is located on the front side of the accommodation portion located below the seat portion.

According to the invention described in claim 1, by achieving both a blowing mechanism consisting of a back blowing air blowing around the seated person and a back blowing air blowing inside the back part of the chair, the air inside the back part is blown by the back blowing inside. You can get rid of the cage and get a refreshing feeling. In addition, by simultaneously blowing out the air from the back to the surroundings of the seated person from the main air duct, the air from the inside of the back is pulled by the outside air from the back on both sides, so that it slowly seeps out from the surface of the back in the form of a mist. I have to. By performing such indirect air blowing, it is possible to provide a chair provided with an indirect air blowing mechanism that provides a more refreshing feeling than the direct air blowing method that blows cool air to the seated person.

According to the invention of claim 2, by arranging the ventilation mechanism between the low air permeability layer on the back base side and the high air permeability layer on the outer skin side, air is blown in the back part and the back of the seated person. It is possible to eliminate the discomfort caused by In addition to this, there is a low ventilation layer on the back base side, so that the front side (front side) of the back part does not flow out to the back side of the back part.

According to the third aspect of the invention, an electric heating mechanism is provided on the lower side of the back surface of the seat to warm the lower body of the seated person and improve sitting comfort. By locating the pipe inside the box-shaped rear base, it is possible to realize an air blowing mechanism that gives a refreshing feeling without generating hot air that is uncomfortable due to the heating of the main air blowing pipe by the electric heating mechanism.

According to the fourth aspect of the present invention, by arranging the air supply position below the seat, outside air from an air conditioner such as a cooling device can be supplied in summer, and outside air from a foot heater or the like can be supplied in winter. By supplying air having the same temperature as the outside air, it is possible to blow air without causing discomfort to the seated person.

1 is a front view schematically showing an air conditioner for a chair of the present invention; FIG. Figure 2 is a plan view of the chair shown in Figure 1; FIG. 3 is a side explanatory view taken along line ZZ of FIG. 2; It is an enlarged front explanatory view of the periphery of the upper pipe portion schematically showing air blowing by the sub blower pipe.

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a chair according to the present invention will be described below with reference to the accompanying drawings. The present invention is not limited to the following forms, and various modifications, additions, etc. are possible within the scope of the present invention. In the following description, terms such as front and back, up and down directions are used for convenience in describing the embodiment, and do not limit the installation, usage posture, etc. of the chair of the present invention.

The chair of this embodiment, as shown in FIG. It has armrest portions 5, 5 which are continuously formed toward the armrest. The chair has casters 41, 41 on the lower surface of the legs 4, 4, and the casters 41, 41 allow the chair to be easily moved to a desired place. A reclining mechanism that connects the back portion 2 to the seat portion 1 may be provided so that the relative angle between the back portion 2 and the seat portion 1 can be adjusted.

The chair of this embodiment is not fixed in a predetermined position like the driver's seat of an automobile, but is an indoor chair that is moved to a predetermined position in a room for use. In addition, instead of connecting with the air conditioner and directly injecting cold air or warm air from the back part 2 to the seated person, the air in the room is circulated and indirect air is blown around the seated person. By blowing air to circulate the air inside, the seated person who is in contact with the back portion 2 feels refreshed. In this description, the term "direct air blowing" refers to blowing air directly to the seated person by directing the air outlet toward the seated person. On the other hand, the indirect air blowing in this embodiment means that the opening direction of the opening of the main air duct and the opening direction of the sub air duct are not facing the seated person (especially the trunk portion) and the air is blown directly to the seated person. It is not a thing, but something that blows air around the seated person and gives the seated person a refreshing feeling.

As shown in FIG. 2, the seat portion 1 has a rectangular shape in a plan view with a rounded periphery, and has a seat surface that slopes backward and downward from the front end that swells upward as shown in FIG. It supports the buttocks and thighs from below. The seat portion 1 includes a box-shaped seat base portion 11 made of a wooden material, a seat cushion material 12 made of urethane material or cotton material covering the seat base portion 11, and a seat made of a leather material covering the surface of the seat cushion material 12. It consists of a surface skin material 13 .

Armrests 5, 5 are provided on both sides of the seat 1, and the armrests 5 can hold the forearms and elbows of the seated person. The armrest portion 5 is composed of an elbow frame (not shown) made of a wooden material, a cushion material (not shown) made of urethane material or cotton material, and a skin material made of leather material.

As shown in FIGS. 1 and 3, the back portion 2 has a substantially square shape with rounded corners, and the width of the back portion 2 is wider than the shoulder width of the seated person. The back portion 2 includes a waist support portion 25 that rises upward and slightly rearward from the lower seat surface 1, a back support portion 26 that continues upward from the waist support portion 25 and protrudes forward, A shoulder rest portion 27 continuing upward from the backrest portion 26 and recessed rearward, and a shoulder rest portion 27 continuing upward from the shoulder rest portion 27 and protruding forward to the same degree as the backrest portion 26. and a headrest portion 28 that is curved to become the upper side of the back portion 2 .

The lumbar contact portion 25 indicates a position where the vicinity of the waist of the seated person abuts, and has a vertical length that is about two-fifths of the vertical length of the back portion 2 . The backrest portion 26 indicates the position where the back of the wearer contacts, and the shoulder support portion 27 indicates the position where the armpit portion of the wearer's shoulders and back contacts the depression. The back support portion 26 and the shoulder support portion 27 have substantially the same vertical length. The head support part 28 is a position where the wearer's head rests against the wearer's neck on the curved front side, and when the wearer tilts his head backward, the head support part 28 naturally rests on the curved upper side. and

The back portion 2 has a vertically long back base portion 30 that supports a load, an inner cushion material 31 is arranged behind the back base portion 30, an outer cushion material 32 is arranged behind the inner cushion material 31, and an outer cushion material 32 is arranged behind the inner cushion material 31. A skin material 33 is arranged on the rear side of the material 32 . An inner cushioning material 31 is arranged on the front side of the back base portion 30, and outer cushioning materials 32, 32 are arranged on the front side of the inner cushioning material 31. - 特許庁A blower mechanism 60, which will be described later, is arranged in front of the double-arranged outer cushion materials 32, 32, a ventilation cushion material 34 is arranged in front of the blower mechanism 60, and an outer skin material 33 is arranged in front of the ventilation cushion material 34. ing.

In the back part 2, a band-shaped inner cushion material 31 and an outer cushion material 32 are stretched from the lower side of the back base part 30, folded back at the upper edge of the back base part 30, and the inner cushion material 31 and the outer cushion material 32 are arranged on the front side and the rear side. is distributed. Therefore, the inner cushion material 31 and the outer cushion material 32 are arranged on the upper side of the back base portion 30 as well.

The back base 30 is a wooden box-shaped frame arranged inside the back 2 . Specifically, a box-shaped frame having a cavity inside is formed by arranging rectangular parallelepiped wood on both sides and arranging wooden boards on the front side and the rear side of both woods.

The inner cushion material 31 is a non-breathable cushion with a thickness of about 1 cm, and is formed of a material with no or extremely low air permeability in which hard urethane fibers are densely arranged to form a low air permeability layer. there is The outer cushion material 32 is made of a soft urethane material having a thickness of slightly less than 2 cm. The soft urethane material used for the outer cushion material 32 includes soft urethane fibers and has low air permeability, forming an intermediate air-permeable layer.

The air-permeable cushion material 34 is a highly air-permeable cushion, and is made of a cotton material with a thickness of about 2 cm. The cotton material has high air permeability and cushioning properties, and forms a highly air permeable layer.

The outer skin material 33 covers the entire surface of the back portion 2, and is made of a mesh material having a plurality of ventilation holes formed in a grid pattern and having high air permeability.

Next, the blower mechanism 60 of the blower chair will be described. The blower mechanism 60 is composed of a drive unit 61 which is a circulator that takes in outside air and generates wind, a power supply unit 62, a main blower pipe 63 having an outlet, and a sub blower pipe 64. The outside air can be blown out from the outlet through the main blower pipe 63 and the sub blower pipe 64 by the electric power of the power supply unit 62 . The drive unit 61 and the power supply unit 62 are accommodated in a box-shaped wooden frame-shaped accommodation unit 42 located between the legs 4 and 4 on both sides and below the seat 1 . Although the details of the drive unit 61 are not shown, it is composed of a blower fan and control means. It may be one that receives power supply. The front surface of the housing portion 42 is positioned below the front end of the seat surface 1 and is formed with an air supply port 67 (air supply position) through which outside air is taken in by a blower fan whose outer skin is made of mesh material.

By using the air blowing mechanism 60 that takes in outside air from the air supply port 67 and blows air, air having the same natural temperature as the indoor air (outside air) is blown, and air is not directly cooled but indirect air blown. It is possible to realize a refreshing feeling by In addition, when the room is heated by a separate unit in winter, or when a heater is placed at the feet, warm air with the same temperature as the outside air can be supplied by supplying the outside air with the heating effect. can be blown, and it becomes possible to realize a refreshing feeling by indirect blowing.

The main blower pipe 63 blows outside air from the drive unit 61, and is divided into two branches from the drive unit 61. It is bent forward from the inside of the back base portion 30 at a position and exposed inside the back portion 2 at an exposure position 30a, and is formed along the vertical direction of the back portion 2. As shown in FIG. The main air duct 63 is located in front of the inner cushion material 31 and the double outer cushion materials 32 , 32 on the front side of the back base 30 and is located between the ventilation cushion material 34 . Moreover, since the main blower pipes 63 are arranged in a pair on the left and right sides inside the back portion 2 , it is preferable to arrange them at the left and right ends inside the back portion 2 . The air from the opening 65 of the main air duct 63 is located further outside the shoulder position of the seated person so that the air does not hit directly.

The main blower pipe 63 includes a lower pipe portion 63a connected to the drive portion 61 and extending into the rear base portion 30 of the rear portion 2, a middle pipe portion 63b positioned within the rear base portion 30, and an exposure hole of the rear base portion 30. It has an upper pipe portion 63c exposed from 30a (exposed position) and located between the outer cushion material 32 and the ventilation cushion material . The main blower pipe 63 is formed of a soft vinyl chloride pipe or rubber hose having an inner diameter (inner diameter) of 19 mm.

The air blowing to the outside of the back surface of the present embodiment will be described. As shown in FIG. 3 or FIG. 4, the upper pipe portion 63c of the main blower pipe has a plurality of openings 65, 65 facing forward, and serves as a first air outlet. A plurality of openings 65, 65 are appropriately formed over the back support 26, the shoulder support 27, and the head support 28. In this embodiment, 11 openings are provided on each side at regular intervals. The lowest opening 65 is located at the most projected portion of the back support 26 , and the highest opening 65 is located at the most projected portion of the head support 28 .

The opening 65 of the upper tubular portion 63c faces forward, but is slightly shifted inward from the straight front, specifically inclined inward by 5 degrees. The outside air blown through the upper tubular portion 63 c through the opening 65 is blown toward the seated person through the ventilation cushion material 34 and the outer skin material 33 . The opening 65 is located outside the seated person on the left and right, and is slightly shifted inward, so that the air is blown in a direction that intersects in front of the seated person (arrow line in FIG. 2). A). The openings 65 , 65 have a diameter of 8 mm, which is smaller than the inner diameter of the main blower pipe 63 . The amount of outside air blown from the opening 65 is such that it can be recognized that there is wind when a hand is placed on the outer skin material 33 of the back portion 2 .

Next, the ventilation inside the back portion of the present embodiment will be described. A plurality of sub-blower pipes 64, 64 are connected from the inside of each of the left and right upper pipe portions 63c, 63c toward the other upper pipe portions 63c, 63c, and the open end of the sub-blower pipe 64 is connected to the second It is used as an air outlet. The sub-blower pipe 64 is formed so that its base end communicates with the main blow-pipe 63, and has an inner diameter that is smaller than the inner diameter of the main blow-pipe 63, but has the same opening area as the opening 65. The amount of air blown is set to be the same as the amount of air blown from the rear portion or to the extent that it is reduced due to pressure loss. The sub blower pipe 64 is also made of the same material as the main blower pipe 63, such as a soft vinyl chloride pipe or a rubber hose.

The sub blower pipe 64 is formed linearly from the upper pipe portion 63c toward the other main blower pipe 63 along the left-right direction. The left and right sub-blower tubes 64, 64 face each other in the left and right direction with their tips (second outlets) slightly displaced in the up and down direction. The outside air blown out from the sub-blower pipes 64, 64 is blown in the horizontal direction between the outer cushion member 32 and the ventilation cushion member 34, respectively, so as to circulate the air inside the back portion 2 (Fig. 4 arrow line B). Blowing air from the sub-blowing pipes 64, 64 prevents the heat of the seated person from remaining in the back portion 2, thereby lowering the sensible surface temperature of the outer skin material 33 due to the heat retention. That is, when the skin material 33 is touched with a hand, a refreshing feeling without heat is always obtained.

The sub blowing pipes 64, 64 are arranged at equal intervals in the longitudinal direction of the upper pipe portion 63c, and the interval is wider than the interval between the openings 65, 65, and are symmetrically formed. The lowest secondary air duct 64 is attached above the lowest opening 65, the highest secondary air duct 64 is attached directly below the highest opening 65, and an opening 65 is also provided in the most recessed portion of the shoulder rest 27. A sub-blower pipe 64 is attached so as to be aligned with.

Six sub-blowing pipes 64 are arranged vertically, and the sub-blowing pipe 64 positioned at the most recessed portion of the shoulder rest 27 is formed longer than the other five sub-blowing pipes 64, 64 to the vicinity of the center. there is The long auxiliary blowing pipes 64, 64 located at the most recessed position of the shoulder rest 27 are located in the armpits of the seated person, especially in the center of the armpits where the lymph glands of the seated person are located. By increasing the air blowing condition of the part and putting a hand on the outer skin material 33 more, a refreshing feeling that heat is not trapped is always obtained.

It is possible to provide the seated occupant with a more refreshing feeling by achieving both the air blowing to the outside of the back portion and the air blowing to the inside of the back portion. That is, the action of outside air blown out from the left and right openings 65, 65 by the blowing from the outside of the back surface, and the blowing of the air to the outside air causes the air blown inside the back part 2 by the inside blowing of the back part to spread over a wide area of the outer skin material 33. I'm trying to ooze out like mist from. When the applicant conducted a physical experiment with three people, no air blowing, only rear air blowing, only back air blowing, and rear air blowing and back air blowing were both performed. The most exhilarating feeling was obtained when air was blown into the back portion.

The secondary blower pipes 64, 64 ventilate the space between the outer cushion material 32 and the ventilating cushion material 34 so as to circulate. The rear side of the sub-blower pipes 64, 64 becomes the inner cushioning material 31, which becomes a low ventilation layer, and the outer cushioning materials 32, 32 which becomes an intermediate ventilation layer. Ventilation is performed through the mesh material (outer skin material 33) through the ventilation cushion material 34 serving as the ventilation layer. By doing so, the outside air blown out from the sub-blower pipes 64, 64 is ventilated inside the back part 2, and then naturally not the back side of the back part 2, but the front side of the back part 2 (seated person side). I'm heading to

The outer cushion material 32 on the side (front side) having the air blowing mechanism 60 has a double cushioning material compared to the rear side, and the ventilation cushion material 34 is disposed on the front side of the air blowing mechanism 60 . By doing so, the air blowing mechanism 60 is disposed inside the back portion 2, but part of the air blowing mechanism is embedded in the outer cushion material 32, and the presence of the ventilation cushion material 34 on the front side causes the seated person to Even if the user puts his or her back against the back surface part 2, the air blowing mechanism 60 will hit the user and the user will not feel discomfort.

The electric heating mechanism 70 will be described. As shown in FIGS. 2 and 3, the electric heating mechanism 70 has a seat surface electric heating portion 71 that heats the seat portion 1 and a back surface electric heating portion 72 that heats the back portion 2. , and heats the seat surface and the back surface below the part blown by the blowing mechanism 60 .

The seat surface electric heating part 71 has a shape extending from the front of the back surface part 2 to the most swollen part of the seat part 1 and is arranged under the seat surface upholstery 13 . The seat surface electric heating part 71 consists of a planar heater having flexibility, is attached between the seat surface covering material 13 and the seat surface cushioning material 12, and deforms following the deformation of the seat surface covering material 13 due to seating. However, the cushioning performance of the seat surface cushion material 12 is not hindered.

The back electric heating portion 72 extends from the waist support portion 25 of the back portion 2 to a part of the back support portion 26, and its upper end is located below the exposure position 30a where the upper tubular portion 63c is exposed from the back base portion 30. there is The back electric heating part 72 consists of a flexible planar heater, is attached between the outer skin material 33 and the ventilating cushion material 34, and deforms following the deformation of the outer skin material 33 due to seating. And it is formed so as not to impede the cushioning performance of the outer cushion materials 32 , 32 .

By having the electric heating mechanism 70, the seat surface of the wearer and the lumbar support portion 25 of the back surface can be warmed, and the lower body of the seated person can be warmed to provide a comfortable chair. In addition, in the range where the electric heating mechanism 70 is arranged, the heat of the electric heating mechanism 70 does not affect the outside air in the main blowing pipe 63 because the middle pipe portion 63b of the main blowing pipe 63 is arranged inside the back base portion 30. It is prevented that the outside air is blown by the main blower pipe 63 and is not heated.

DESCRIPTION OF SYMBOLS 1... Seat part 2... Back part 26... Back support part 30... Back base part 31... Inner cushioning material (low air permeability layer) 34... Air permeable cushioning material (high air permeability layer) 42... Storage part 60... Blower mechanism 61 Drive section 62 Power supply section 63 Main blower tube 63b Middle tube section 63c Upper tube section 64 Sub-blower tube 65 Opening 70 Electric heating mechanism.

Claims (4)

A chair having a seat part and a back part, and having an indirect air blowing mechanism that achieves both air blowing inside the back part and blowing air outside the back part,
The blowing mechanism includes a driving section for supplying external air and blowing the air to a main blowing duct, a pair of main blowing ducts arranged in the vertical direction from the driving section into the back portion, and the main blowing duct. a blower mechanism for blowing air to the outside of the rear surface, which has an opening that opens forward;
A fan chair characterized by comprising a plurality of sub-blowing pipes extending inwards in the left and right direction in the main blowing pipe, and a blowing mechanism for blowing air from the tip openings of the sub-blowing pipes to the back portion. . The main air duct and the sub air duct are arranged between a low air permeability layer arranged in the back base in the back part and a high air permeability layer arranged inside the outer skin material of the back part. The fan chair according to claim 1. It has an electric heating mechanism arranged in the seat and the backrest of the back part,
The main blower pipe of the blower mechanism has a middle pipe portion arranged in a box-shaped rear base portion and an upper pipe portion exposed from the rear base portion,
3. The blower chair according to claim 2, wherein the exposure position where the main blower pipe is exposed from the back base is located above the electric heating mechanism of the back. 4. The fan chair according to any one of claims 1, 2 or 3, wherein the air supply position is located on the front side of the accommodation portion located below the seat portion.

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