JP2004049742A - Chair - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a connection force to resist a pull force to be added to the cover cloth in usage, and also to easily remove the cover cloth in a division and collection work. <P>SOLUTION: The peripheral edge part of a synthetic resin-made seat board 1, whose upper surface is covered with the cover cloth 4 via a buffer board, includes a ring shape groove 11 on the lower surface. A plurality of through-holes 12 are arranged in the groove 11 in a peripheral direction, and filled with a hot-melt adhesive. The peripheral edge part of the buffer board is adhered onto the upper surface of the seat board 1 with hot-melt adhesive, and the peripheral edge part of the cover cloth 4 is adhered onto the lower surface 1a of the seat board 1 with the hot-melt adhesive, so that the connection force to to resist the pull force to be added to the cover cloth 4 in usage is obtained. Besides, the cover cloth 4 is pulled in the thickness direction of the seat board by picking up the peripheral edge part of the cover cloth 4, so as to be separated. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a chair for office use, learning or the like.
[0002]
[Prior art]
The chair includes a seat, a leg supporting the seat, and a backrest extending upward from one side of the seat.
The seat has a seat plate, a cover cloth covering the upper surface of the seat plate, and a buffer plate such as urethane foam interposed between the cover cloth and the seat plate.
The seat plate is formed of various materials, and the covering cloth is formed of woven fabric, leather, synthetic resin sheet, or the like, and the peripheral edge of the covering cloth is joined to the peripheral edge of the seat plate.
[0003]
FIG. 10 is a bottom view, partially omitted, showing a structure for connecting a covering cloth to a seat plate in a conventional chair.
By the way, when the seat plate 100 is made of a synthetic resin such as polypropylene, for example, the adhesive cannot be bonded to the seat plate 100 or the adhesive force is relatively small. Could not be bonded with an adhesive. Therefore, when connecting the peripheral edge of the covering cloth 101 to the seat plate 100 made of synthetic resin such as polypropylene, the entire peripheral edge of the covering cloth 101 is connected almost continuously with the staple 102 as shown in FIG. Was.
[0004]
[Problems to be solved by the invention]
However, in a chair in which the covering cloth 101 is joined to the seat plate 100 with the staples 102, it is very difficult to remove all the staples 102. When sorting and collecting components, it is very difficult to remove the cover cloth 101 and collect the seat plate 100, and an improvement measure has been demanded.
[0005]
The present invention has been made in view of such circumstances, and a plurality of through-holes are provided in a peripheral portion of a seat plate, an adhesive is filled in the through-holes, and a peripheral portion of a covering cloth is formed on a lower surface of the seat plate. By providing a configuration in which the adhesive is bonded to the adhesive, it is possible to obtain a binding force capable of withstanding a tensile force applied to the covering cloth at the time of use, and to provide a chair capable of easily removing the covering cloth during sorting and collecting work. The purpose is to:
[0006]
Further, a plurality of through holes are provided in a peripheral portion of the seat plate, an adhesive is filled in the through holes, a peripheral portion of the buffer plate is adhered to the adhesive on an upper surface of the seat plate, and a peripheral portion of the covering cloth is formed. By adopting a configuration in which the lower surface of the seat plate is bonded to the adhesive, it is possible to obtain a bonding force that can withstand a tensile force applied to the covering cloth during use, and it is possible to eliminate the need for an adhesive for connecting the buffer plate. In addition, it is an object of the present invention to provide a chair capable of easily removing a covering cloth during a sorting and collecting operation.
[0007]
Further, by providing a recess communicating with the through hole on the lower surface of the seat plate, it is possible to provide a chair capable of increasing the bonding force of the covering cloth to the seat plate with respect to the tensile force toward the peripheral edge of the seat plate. The purpose is to do.
[0008]
Further, by providing a structure in which the recess is a groove that connects adjacent through holes, a chair can be provided that can further increase the bonding force of the covering cloth to the seat plate with respect to the tensile force toward the peripheral edge of the seat plate. The purpose is to do.
[0009]
[Means for Solving the Problems]
A chair according to a first aspect of the present invention is a chair having a seat plate whose upper surface is covered with a covering cloth, wherein the seat plate has a plurality of through holes in a peripheral portion at a peripheral portion thereof, and an adhesive is provided on the through holes. And a peripheral portion of the covering cloth is adhered to the adhesive on a lower surface of the seat plate.
[0010]
A chair according to a second aspect of the present invention is a chair having a seat plate whose upper surface is covered with a covering cloth via a buffer plate, wherein the seat plate has a plurality of through holes in a circumferential direction in a peripheral portion thereof, The through hole is filled with an adhesive, a peripheral portion of the buffer plate is bonded to the adhesive on an upper surface of the seat plate, and a peripheral portion of the covering cloth is bonded to the adhesive on a lower surface of the seat plate. It is characterized by being adhered.
[0011]
In the first invention and the second invention, when a chair is used, a tensile force toward the periphery of the seat plate is applied to the joint of the covering cloth, but the adhesive to which the covering cloth is adhered is Since the through hole penetrating the seat plate is filled, it is possible to prevent the adhesive from coming out of the through hole due to the tensile force applied to the covering cloth during use, and the covering cloth is adhered to the adhesive in this state. Therefore, a bonding force that can withstand the tensile force can be obtained. Moreover, since the covering cloth is adhered to the adhesive, the covering cloth can be peeled off by pinching the peripheral edge of the covering cloth and pulling the covering cloth in the thickness direction of the seat plate. Therefore, the covering cloth can be easily removed as compared with the case where the covering cloth connected with the stapler needle is peeled off, and the efficiency of sorting and collecting work can be improved.
Further, in the second invention, since the peripheral portion of the buffer plate is bonded to the adhesive for bonding the covering cloth to the seat plate, an adhesive dedicated to the buffer plate is unnecessary, and this adhesive is used. The application step can be omitted, and the efficiency of assembling the chair can be improved.
[0012]
A chair according to a third invention is characterized in that the lower surface of the seat plate has a recess communicating with the through hole.
According to the third invention, the adhesive is filled in the through-hole and the recess communicating with the through-hole, so that the holding force of the adhesive to the seat plate with respect to the tensile force toward the peripheral edge of the seat plate can be increased. Thus, the bonding force of the covering cloth to the seat plate with respect to the tensile force toward the periphery of the seat plate can be increased.
[0013]
A chair according to a fourth invention is characterized in that the recess is a groove connecting adjacent through holes.
According to the fourth aspect, since the adhesive filled in each through hole can be continuously connected to each other, the holding force of the adhesive to the seat plate with respect to the tensile force toward the peripheral edge of the seat plate is further increased. Thus, the bonding force of the covering cloth to the seat plate with respect to the pulling force toward the peripheral edge of the seat plate can be further increased.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described in detail with reference to the drawings showing the embodiments.
Embodiment 1
FIG. 1 is a perspective view showing a configuration of a chair 1 according to a first embodiment of the present invention, FIG. 2 is an exploded perspective view of a seat plate portion, and FIG. 3 is a partially enlarged sectional view of the seat plate.
The chair includes a substantially circular seat plate 1, a leg 2 coupled to a substantially central portion of the seat plate 1, and supporting the seat plate 1, and a covering cloth 4 for covering the upper surface of the seat plate 1 via a buffer plate 3. And a backrest 5 coupled to the lower surface of the seat plate 1 and extending upward from one side of the seat plate 1.
[0015]
The seat plate 1 is made of polypropylene and is molded. An annular groove 11 is provided on the lower surface of the periphery of the seat plate 1. The groove 11 is provided with a plurality of through holes 12 that penetrate the seat plate 1 in the thickness direction and are spaced apart in the circumferential direction. The groove 11 is wider than the hole diameter of the through hole 12, and connects all the adjacent through holes 12. The groove 11 and each through hole 12 are filled with a hot melt adhesive.
The covering cloth 4 is made of a sheet material such as a woven fabric, leather, or a synthetic resin sheet, and is formed in a circular shape having a diameter larger than that of the seat plate 1. The buffer plate 3 is made of a cushion material such as urethane foam, and is formed in a circular shape slightly smaller in diameter than the seat plate 1.
[0016]
4 is a bottom view showing a state in which a part of the covering cloth is joined to the seat plate, FIG. 5A is an enlarged sectional view taken along line VV in FIG. 4, and FIG. 5B is a view b in FIG. It is sectional drawing of the -b line.
In the chair configured as described above, the cover cloth 4 is coupled to the seat plate 1 in a state where the leg 2 and the backrest 5 are not coupled to the seat plate 1. This covering cloth 4 is connected by filling the groove 11 and the through hole 12 with the hot melt adhesive 6 from the groove 11 side with the lower surface 1a of the seat plate 1 facing upward, and from the edge of the through hole 12 opposite to the groove. Let it overflow. The filling of the hot melt adhesive 6 can be easily performed by a filling device having the nozzle in which the hot melt adhesive 6 is stored.
[0017]
Next, the seat plate 1 is turned upside down, the buffer plate 3 is placed on the upper surface 1b of the seat plate 1, and the peripheral edge of the buffer plate 3 is adhered to the hot melt adhesive 6 overflowing from the through hole 12, and the hot melt It is connected to the seat plate 1 via the adhesive 6. Thereafter, the seat plate 1 is placed on the developed cover cloth 4 with the lower surface 1a of the seat plate 1 facing upward, and the peripheral edge of the cover cloth 4 is pulled toward the groove 11 along the peripheral edge of the seat plate 1. The adhesive is adhered to the hot melt adhesive 6 filled in the groove 11, and the peripheral edge of the covering cloth 4 is joined to the seat plate 1 via the hot melt adhesive 6.
[0018]
When the chair is used, a tensile force toward the periphery of the seat plate 1 is applied to the joint portion of the covering cloth 4 to the seat plate 1, but the hot melt adhesive 6 and the hot melt adhesive 6 in the annular groove 11 are applied. The hot melt adhesives 6 in all the adjacent through holes 12 are continuously connected, and the buffer plate 3 is bonded to the hot melt adhesive 6 overflowing from the through holes 12. The hot melt adhesive 6 can be prevented from falling out of the through hole 12 and the groove 11 due to the tensile force toward the periphery, and the holding force of the hot melt adhesive 6 on the seat plate 1 can be increased. Therefore, in the configuration in which the cover cloth 4 is bonded to the polypropylene seat plate 1 by the hot melt adhesive 6, the bonding force of the cover cloth 4 to the seat plate 1 with respect to the tensile force toward the periphery of the seat plate 1 can be increased. .
[0019]
When the components such as the seat plate 1 are separated and collected for recycling the chair, the peripheral edge of the cover fabric 4 is pinched and the cover fabric 4 is pulled in the thickness direction of the seat plate 1 to bond the cover fabric 4 with hot melt. The cover cloth 4 can be removed from the seat plate 1 by peeling off the agent 6. Accordingly, the covering cloth 4 can be easily removed as compared with the case where the covering cloth 4 connected with the stapler needle is peeled off, and the efficiency of sorting and collecting work can be improved.
[0020]
In the first embodiment, the groove 11 may have a width larger than the diameter of the through-hole 12, or may have a width smaller than the diameter of the through-hole 12, or may connect all the through-holes 12. Instead of being annular, a single non-annular groove 11 or a plurality of grooves 11 spaced apart in the circumferential direction of the seat plate 1 may be used.
[0021]
Embodiment 2
FIG. 6 is a partially enlarged sectional view of a seat plate showing a configuration of the chair 2 according to the second embodiment of the present invention.
In the chair according to the second embodiment, a plurality of recesses 13 that are circumferentially separated from each other are provided in the seat plate 1 instead of the annular groove 11, and the seat plate 1 passes through each of the recesses 13 in the thickness direction. The through hole 12 is provided.
[0022]
The recess 13 is a peripheral portion of the seat plate 1 and is provided on the lower surface 1a. The recess 13 has a width larger than the diameter of the through hole 12 and is formed in a substantially rectangular shape whose longitudinal direction is the circumferential direction of the seat plate 1.
[0023]
In the second embodiment, the hot melt adhesive 6 is filled in the through-hole 12 and the recess 13 communicating with the through-hole 12. The hot melt adhesive 6 in the recess and the hot melt adhesive 6 in the through-hole 12 are continuously connected, and the buffer plate 3 is bonded to the hot melt adhesive 6 overflowing from the through-hole 12. The hot melt adhesive 6 can be prevented from coming out of the through hole 12 and the recess 13 by the tensile force toward the periphery of the seat plate 1, and the holding force of the hot melt adhesive 6 on the seat plate 1 can be increased. it can. Therefore, in the configuration in which the cover cloth 4 is bonded to the polypropylene seat plate 1 by the hot melt adhesive 6, the bonding force of the cover cloth 4 to the seat plate 1 with respect to the tensile force toward the periphery of the seat plate 1 can be increased. .
[0024]
Since other configurations and operations are the same as those of the first embodiment, the same reference numerals are given to the same components, and the detailed description and the description of the operation and effects will be omitted.
In the second embodiment, the shape of the recess 13 is not particularly limited, and may be an oval or a circle in addition to the rectangular shape.
[0025]
Embodiment 3
FIG. 7 is an exploded perspective view of a seat plate portion showing a configuration of a chair according to a third embodiment of the present invention, FIG. 8 is a bottom view of a state in which a part of a covering cloth is joined to the seat plate, and FIG. 9) is an enlarged sectional view taken along the line VIII-VIII in FIG. 8, and FIG. 9B is a sectional view taken along the line bb in FIG. 9A.
In the chair according to the third embodiment, the grooves 11 and the recesses 13 are eliminated, and a plurality of the through holes 12 are provided in the peripheral portion of the seat plate 1 in the circumferential direction.
[0026]
In the third embodiment, hot melt adhesive 6 is filled in each through-hole 12 so as to overflow from through-hole 12. Since the buffer plate 3 is bonded to the hot melt adhesive 6 overflowing from the through hole 12 to the upper surface 1 b of the seat plate 1, the hot melt adhesive 6 comes out of the through hole 12 by a tensile force toward the periphery of the seat plate 1. Can be prevented, and the holding force of the hot melt adhesive 6 on the seat plate 1 can be increased. Therefore, in the configuration in which the cover cloth 4 is bonded to the polypropylene seat plate 1 by the hot melt adhesive 6, the bonding force of the cover cloth 4 to the seat plate 1 with respect to the tensile force toward the periphery of the seat plate 1 can be increased. .
Since other configurations and operations are the same as those of the first embodiment, the same reference numerals are given to the same components, and the detailed description and the description of the operation and effects will be omitted.
[0027]
In the third embodiment, the through hole 12 is formed in a cylindrical shape, but may be formed in a substantially conical shape or a substantially pyramid shape having a large diameter on the lower surface 1a of the seat plate 1, for example. In this case, the hot melt adhesive 6 overflowing from the through hole 12 to the upper surface 1b of the seat plate 1 can make it difficult for the hot melt adhesive 6 to escape from the through hole 12.
[0028]
In the embodiment described above, the buffer plate 3 is provided between the upper surface 1b of the seat plate 1 and the cover cloth 4. However, the buffer plate 3 may be omitted. In this case, the hot melt adhesive 6 filling the through holes 12 does not have to overflow onto the upper surface 1 b of the seat plate 1, but overflowing the upper surface 1 b makes it harder for the hot melt adhesive 6 to escape from the through holes 12. .
[0029]
In the above-described embodiment, the cover cloth 4 is bonded to the polypropylene seat plate 1 with the hot melt adhesive 6, but the seat plate 1 may be made of a synthetic resin. Not limited. Further, an adhesive other than the hot melt adhesive 6 may be used. The adhesive is filled so as to fill the through holes 12, the grooves 11, and the recesses 13 or may be filled so as not to be full, and the filling amount is not limited.
Further, the chair according to the present invention is not limited to the configuration including the legs 2 supporting the seat plate 1 and the configuration including the backrest 5.
[0030]
【The invention's effect】
As described above in detail, according to the first invention, a plurality of through holes provided in the peripheral portion of the seat plate are filled with an adhesive, and the peripheral portion of the covering cloth is bonded to the adhesive. It is possible to prevent the adhesive from coming out of the through hole due to the tensile force applied to the covering cloth at the time, and it is possible to obtain a bonding force that can withstand the tensile force. Moreover, since the covering cloth can be peeled by pinching the peripheral edge of the covering cloth and pulling the covering cloth in the thickness direction of the seat plate, the covering cloth can be peeled off compared to the case where the covering cloth connected with a staple is peeled off. The cloth can be easily removed, and the efficiency of sorting and collecting work can be improved.
[0031]
According to the second invention, the plurality of through holes provided in the peripheral portion of the seat plate are filled with an adhesive, the buffer plate is bonded to the adhesive on the upper surface of the seat plate, and the covering cloth is formed on the lower surface of the seat plate. Since the adhesive is adhered to the adhesive, it is possible to prevent the adhesive from coming out of the through hole due to a tensile force applied to the covering cloth during use, and to obtain a bonding force that can withstand the tensile force. Moreover, since the covering cloth can be peeled by pinching the peripheral edge of the covering cloth and pulling the covering cloth in the thickness direction of the seat plate, the covering cloth can be peeled off compared to the case where the covering cloth connected with a staple is peeled off. The cloth can be easily removed, and the efficiency of sorting and collecting work can be improved. Furthermore, since the periphery of the buffer plate is bonded to the adhesive for bonding the covering cloth to the seat plate, an adhesive dedicated to the buffer plate is not required, and the step of applying this adhesive can be omitted, and the chair can be omitted. Can improve the efficiency of assembly work.
[0032]
According to the third invention, since the adhesive is filled in the through hole and the recess communicating with the through hole, the holding force of the adhesive to the seat plate with respect to the tensile force toward the peripheral edge of the seat plate can be increased. Thus, the bonding force of the covering cloth to the seat plate with respect to the tensile force toward the peripheral edge of the seat plate can be increased.
[0033]
According to the fourth invention, the holding force of the adhesive on the seat plate with respect to the tensile force toward the peripheral edge of the seat plate can be further increased, and the covering cloth is connected to the seat plate against the tensile force toward the peripheral edge of the seat plate. The power can be further increased.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a configuration of a first embodiment of a chair according to the present invention.
FIG. 2 is an exploded perspective view of a seat plate portion showing the configuration of the chair according to the first embodiment of the present invention.
FIG. 3 is a partially enlarged cross-sectional view of a seat plate showing the configuration of the chair according to the first embodiment of the present invention.
FIG. 4 is a bottom view showing a configuration of the chair according to the first embodiment of the present invention in a state where a part of a covering cloth is coupled to a seat plate.
5A is an enlarged cross-sectional view taken along line VV of FIG. 4, and FIG. 5B is a cross-sectional view taken along line bb of FIG.
FIG. 6 is a partially enlarged sectional view of a seat plate showing a configuration of a chair according to a second embodiment of the present invention.
FIG. 7 is an exploded perspective view of a seat plate portion showing a configuration of a third embodiment of a chair according to the present invention.
FIG. 8 is a bottom view of the chair according to the third embodiment of the present invention, showing a configuration in which a part of a covering cloth is coupled to a seat plate.
9A is an enlarged sectional view taken along line VIII-VIII of FIG. 8, and FIG. 9B is a sectional view taken along line bb of FIG.
FIG. 10 is a partially omitted bottom view showing a structure for coupling a covering cloth to a seat plate in a conventional chair.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Seat plate 1a Lower surface 11 Groove 12 Through hole 13 Depression 3 Buffer plate 4 Covering cloth 6 Hot melt adhesive (adhesive)

Claims (4)

In a chair having a seat plate having an upper surface covered with a covering cloth, a peripheral portion of the seat plate has a plurality of through holes in a circumferential direction, and the through holes are filled with an adhesive, The chair according to claim 1, wherein a peripheral portion of the cloth is adhered to the adhesive at a lower surface of the seat plate. In a chair having a seat plate whose upper surface is covered with a covering cloth via a buffer plate, a peripheral portion of the seat plate has a plurality of through holes in a circumferential direction, and the through holes are filled with an adhesive. The peripheral portion of the buffer plate is bonded to the adhesive on the upper surface of the seat plate, and the peripheral portion of the covering cloth is bonded to the adhesive on the lower surface of the seat plate. Chair to do. The chair according to claim 1, wherein the lower surface of the seat plate includes a recess communicating with the through hole. 4. The chair according to claim 3, wherein the recess is a groove that connects adjacent through holes.

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