JPH10276855A - Chair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent an facing material from being put in the charged condition, and to make a seat adaptable even to a chair of conventional structure, by configuring the seat from an elastic support consisting of a seat supported by the body, a facing material to cover at least the oversurface of the elastic support, and a conductive cloth whose surface is fluffed. SOLUTION: The seat is composed of a cushion material 21 as an elastic support, a facing material 22, and a conductive cloth 23. The cloth 23 is installed on the oversurface of the cushion material 21, and in such a way as covering the cloth 23, the facing material 22 is installed on the oversurface of the cushion material 21, and the peripheral edges 22a of the facing material 22 are included to the undersurface of the periphery of the cushion the cushion material 21 and held in the position. The cloth 23 has such a structure that non-woven fibers are covered with an appropriate quantity of polymer of electric conjugate type, and the surface is fluffed. The cloth 23 is installed in band shape in the region ranging from the left edge to the right upon passing approx. the central part of the seat where it is presumed that the oppotunity of the human body with the seat is the greatest.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chair capable of effectively preventing itself from being charged.

[0002]

2. Description of the Related Art Conventionally, there are many cases where charging of a chair poses a problem. As a cause of such a charging phenomenon, a dielectrically polarized charge is generated by frictional sliding between a human body and a seat or a back portion while a person is sitting on a chair, and when the person leaves the chair, the seat or the back. There are cases where electric charges remain on the backrest and become charged, and cases where electric charges flowing through a human body from OA equipment introduced in large quantities in offices and the like recently accumulate in a chair and become charged. And when the chair is charged in this way, for example, the electric charge is discharged through the human body at the moment when the person who is going to sit on the chair next touches the chair, and it is not uncommon for the person to feel discomfort or more shock .

[0003] Therefore, recently, as a measure for preventing such electrification of the chair, a method has been developed in which the upholstery is made conductive and the upper upholstery is grounded.

[0004]

However, under the present circumstances, such an upholstery is usually manufactured by blending a conductive yarn with a fabric of the upholstery. For this reason, there is a disadvantage that the manufacturing cost is high. In addition, in this way, the work was applied to the upper clad ground side,
Since it is no longer possible to use any kind of fabric for the upper-layered fabric, there is a problem that it becomes a great limitation in pursuing the feeling and appearance of the chair.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention employs a conductive cloth which can be easily manufactured, and this conductive cloth has an antistatic effect on a portion other than the upholstery. They will be installed in a state where they can operate.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The chair of the present invention has an elastic support having a seat supported by a chair body, an upholstery covering at least the upper surface of the elastic support, And a raised conductive cloth interposed between the upper coverings. With such a configuration, the raised ends of the raised conductive cloth come into contact with the lower surface of the upholstery everywhere, so that the electric charges on the upholstery side are electrically conductive from the upholstery through the contact portions. Move to cloth side.
By utilizing such a current collecting action, it is possible to effectively prevent at least the upper clad ground from being charged. In the present invention, the conductive cloth is merely interposed between the elastic support and the upholstery. The upholstery itself does not require any troublesome construction such as blending, and its material is basically Therefore, the degree of freedom in pursuing the feeling of use and appearance does not decrease, and the present invention can be easily applied to a chair having an existing structure.

[0007] In order to achieve the antistatic effect, the backrest is also supported by the chair body, an elastic support covering at least the front surface of the elastic support, and the elastic support and It is preferable to provide a brushed conductive cloth interposed between the upper coverings.
As a specific embodiment for fixing the conductive cloth, the conductive cloth and the upholstery may be bonded to each other via a partially attached adhesive element, or a conductive cloth. One in which the elastic support is bonded to the conductive cloth and the conductive cloth is not bonded to the upper fabric. In order to partially distribute the adhesive element, it is preferable to use a net-like or nonwoven-like adhesive element or to attach the adhesive element to a nonwoven cloth.

In order to positively remove charges, the conductive cloth is formed in a band shape extending from a part of the edge of the seat or the backrest to the opposite edge, and the end is made of the edge. An object electrically connected to a nearby grounding point, or a conductive cloth limited to a certain area inside the edge of the seat or backrest, and a part of the conductive cloth One example is a device that is electrically connected to a ground point provided near an edge of a seat or a backrest via a communication element. In these cases, in order to effectively enhance the current collecting action, it is preferable to provide a surface area extending portion having irregularities in a planar direction around at least a part of the conductive cloth.

As a simple conductive cloth, a non-woven cloth coated with an electron conjugated polymer can be used.

[0010]

An embodiment of the present invention will be described below with reference to the drawings. The chair shown in FIG. 1 has an antistatic function for both the seat 2 and the backrest 3 supported by the chair body 1. The chair body 1 has a caster 11 at the lower end.
a, and a seat support 12 and a back support rod 13 supported by the leg 11, the seat 2 is supported by the seat support 12, 13 supports the backrest 3.

As shown in FIGS. 1 to 3, the seat 2 includes a cushion 21 as an elastic support, an upholstery 22, and a conductive cloth 23. The upper surface of the cushioning material 21 is covered with the upper cloth 22 so as to cover the conductive cloth 23, and the peripheral portion 22 a of the upper cloth 22 is covered with the cushion material 2.
It is wrapped around the lower surface of the peripheral portion of No. 1 and is held at that position.
In this embodiment, the conductive cloth 23 has a raised surface formed by coating the periphery of the non-woven fabric with an appropriate amount of an electron conjugated polymer.
Are arranged in a belt-like area in a region extending from the left edge to the right edge through a substantially central portion of the seat 2 where the human body is expected to slide most with the seat 2 when seated. Then, the seat 2 configured as described above is fixed to the seat receiving portion 12 of the chair body 1 by an appropriate mounting structure, and in this state, the left and right ends 23 a of the conductive cloth 23 are directly contacted with the seat receiving portion 12. Let me. The seat portion 12 is made of a material made of a metal pipe frame together with the leg portion 11, and an electrically conductive caster is used for the caster 11a.
1 and the caster 11a, and is electrically connected to the floor F to serve as a grounding point.

Similarly, the backrest 3 includes a cushion material 31 serving as an elastic support, an upholstery fabric 32, and a conductive cloth 33, and the conductive cloth 3 is provided on the front surface of the cushion material 31.
3 is provided, and the front surface of the cushion material 31 is covered with the upholstery 32 so as to cover the conductive cloth 33. The periphery of the upholstery material 32 is wound around the back surface of the periphery of the cushion material 31. Hold in that position. This conductive cloth 33 is also made of a raised non-woven fabric coated with an electron conjugated polymer, similar to the cloth used for the seat 2. It is arranged in a band from the left edge to the right edge passing through the approximate center of the expected backrest 3. Then, the backrest 3 configured as described above is fixed to the back support rod 13 of the chair main body 1 by an appropriate mounting structure.
At least a part of the end portion is in direct contact with the back support rod 13. The back support rod 13 is also made of a metal pipe frame, and is electrically connected to the floor via the legs 11 and casters 11a to serve as a ground point.

By the way, for example, the conductive cloth 23 of the seat 2
Needs to be fixed to the upholstery material 22 or the cushion material 21 using an adhesive element such as an adhesive so that the chair does not shift due to long-term use. Considering the case where the fixing is performed on the upper covering material 22 side, if the upper covering material 22 and the conductive cloth 23 are completely adhered by the adhesive element, the raised end of the conductive cloth 23 is an adhesive element. There is a possibility that the conductive property and the current collecting property with the overlaid ground 22 may be significantly reduced. Therefore, as shown in FIG.
For example, a method of applying the adhesive element 24 to the roller (not shown) in a dotted or streaked manner and rolling the roller on the conductive cloth 23 is adopted. I do. The same applies to the backrest 3.

In the chair of this embodiment constructed as described above, the raised ends of the raised conductive cloths 23 and 33 are in contact with the lower surfaces of the upholstery bases 22 and 32 everywhere, and the upper portions are raised through the contact portions. The electric charges generated on the upholstery 22 and 32 sides are electrically conductive cloth 23,
Move to the 33 side. Utilizing such a current collecting action, the charging of the upper-covered ground 22, 32 is effectively prevented. Therefore, after the user leaves the chair, it is possible to surely prevent a situation in which another user receives a shock due to electric discharge when trying to sit on the chair. And, in this embodiment,
The conductive cloths 23 and 33 are interposed between the cushioning materials 21 and 31 and the upholstery bases 22 and 32, and the upper upholstery bases 22 and 32 do not require any requirements such as conductivity. is there. For this reason, it is possible to use a material having a good usability and appearance as in the past, as the fabric of the upper-coated ground 22, 32,
It can be easily applied to a chair having an existing structure only by inserting the conductive cloths 23 and 33. Of course, in this embodiment, since the non-woven fabric is used for the conductive cloths 23 and 33, the conductive cloths 23 and 33 can be employed extremely inexpensively, and there is an advantage that a troublesome and costly work process such as blending can be completely eliminated.

In addition, in this embodiment, the conductive cloths 23 and 33 are electrically connected to the seat receiving portion 12 and the back support rod 13 which are the ground points of the present invention.
The charge on the chair 3 is quickly removed from the chair without remaining in the conductive cloths 23 and 33. Therefore, it is possible to effectively prevent the human body or the chair from being charged due to electric charges generated during sitting or electric charges brought in by walking on the carpet and sitting. As described above, in the present embodiment, it is possible to easily and effectively remove the static electricity problem which has conventionally been a problem without impairing the essential function as a chair.

The specific configuration of each section is not limited to the above-described embodiment. For example, as another method for partially applying an adhesive element to a conductive cloth, as shown in FIG. 5, a conductive cloth 4 having an uneven surface is used.
By rolling a roller (not shown) having an adhesive element applied on the conductive cloth 4, the adhesive element may be provided only on the convex portion 4a. Even in this case, the raised end of the conductive cloth 4 raised from the concave portion 4b to which the adhesive is not applied is erected and effectively comes into contact with the lower surface of the upholstery. Also, as shown in FIG. 6, when the heat is applied to the net-like adhesive element 5 to cause the net-like adhesive element 5 to adhere to the conductive cloth 6, the tip of the raised brush of the conductive cloth 6 similarly raised from the mesh of the net may be used. The lower surface of the upholstery can be effectively contacted. Alternatively, as shown in FIG.
A may be used in which the adhesive element 9b is applied in advance to a. In this case, the application of the adhesive element 9b can be performed extremely easily by adopting a manufacturing method in which the melted adhesive element 9b is dropped from the nozzle and blown off by air (melt blow manufacturing method).

Further, the conductive cloth does not necessarily have to be in the form of a strip as in the above embodiment, but is limited to the central part where contact with the human body is most intense in the seat 2 or the like as in the conductive cloth 7 shown in FIG. May be provided. In this way, the amount of the conductive cloth 7 used can be suppressed as much as possible, and effective current collection can be performed. In this case, it is effective to connect a part of the conductive cloth 7 to the seat receiving portion 12 or the like of the chair body 1 through the conductive communication element 7a such as a conductive tape in order to positively remove the electric charge. It is. It is also effective to provide a surface area extending portion 8a having irregularities in a plane direction around the conductive cloth 8 as shown in the conductive cloth 8 of FIG. This is because the conductive cloth 8 collects electric charges through its surface, and the larger the surface area, the more the current collecting effect can be expected.

Other configurations can be variously modified without departing from the spirit of the present invention.

[0019]

Since the present invention has the above-described configuration, the following effects can be obtained. That is, in the chair of the present invention, the seat is composed of an elastic support, an upholstery ground, and a conductive cloth, of which the conductive cloth is raised and interposed between the elastic support and the upper upholstery. It is. For this reason, the electric charge on the upholstery side can be moved to the conductive cloth side via the contact portion between the raised nap of the conductive cloth and the upholstery ground, and the electrification of the upholstery ground can be effectively prevented. . In addition, in the present invention, since there is no restriction on the fabric of the upper-layered ground, it is possible to employ a material having good usability and appearance as in the conventional case, and the conductive cloth is simply used for the chair having the existing structure. It can be easily applied simply by interposing.

The above structure can be used not only for the seat but also for the backrest, so that the antistatic effect can be effectively achieved. In fixing the conductive cloth, when the conductive cloth and the upper-layered fabric are bonded to each other via a partially attached bonding element, an effective current collecting effect is obtained through the non-bonded part. When the conductive cloth and the elastic support are bonded to each other and the conductive cloth and the upholstery material are not bonded to each other, a current collecting effect can be obtained in the entire area of the conductive cloth. it can. In the former case, the use of a net-shaped or non-woven fabric as the bonding element can obviate the need for a troublesome application of the bonding element. It can be done simply.

The conductive cloth is formed in a strip shape extending from a part of the edge of the seat or the backrest to the opposite edge, and the end is connected to a grounding point provided near the edge, When the cloth is provided limited to a certain area inside the edge of the seat or backrest, and a part of the cloth is connected to a ground point provided near the edge of the seat or backrest via the conductive connecting element. Can easily provide not only the current collection but also the effect of positively removing the electricity. In these cases, when at least a portion of the conductive cloth is provided with a surface area extending portion having irregularities in a planar direction, the current collecting action can be effectively enhanced.

In the above, when a non-woven fabric obtained by coating a conductive cloth with an electron conjugated polymer is used, it can be used at a low cost and an effective current collecting effect and an effective static elimination effect can be obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a partial sectional view of FIG.

FIG. 3 is an exploded perspective view of the embodiment.

FIG. 4 is an explanatory view of a main part showing manufacturing steps of the example.

FIG. 5 is an explanatory view corresponding to FIG. 4, showing a modification of the manufacturing process.

FIG. 6 is an explanatory view corresponding to FIG. 4, showing another modified example of the manufacturing process.

FIG. 7 is an explanatory view corresponding to FIG. 4, showing still another modified example of the manufacturing process.

FIG. 8 is a schematic plan view showing another embodiment of the conductive cloth.

FIG. 9 is a schematic plan view showing still another embodiment of the conductive cloth.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Chair body 2 ... Seat 3 ... Backrest 4 ... Conductive cloth 5 ... Adhesive element 6 ... Conductive cloth 7 ... Conductive cloth 7a ... Conductive communication element 8 ... Conductive cloth 8a ... Surface area expansion part 9a ... Conductivity Cloth 9b ... Adhesive element 12 ... Earth place (seat receiving part) 13 ... Earth place (back support rod) 21 ... Elastic support body (cushion material) 22 ... Emperor ground 23 ... Conductive cloth 24 ... Adhesive element 31 ... Elastic support Body (cushion material) 32 ... Kamishiri 33 ... Conductive cloth

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Tomokazu Murakami 6-1-1, Oimazato-minami, Higashi-Nari-ku, Osaka-shi Inside KOKUYO Co., Ltd. (72) Inventor Toshiaki Takase 2-14-5 Sotokanda, Chiyoda-ku, Tokyo Inside Japan Vilene Co., Ltd.

Claims (9)

[Claims] A seat is provided with an elastic support member supported by a chair body, an upholstery covering at least an upper surface of the elastic support, and interposed between the elastic support and the upholstery ground. A chair comprising a raised hair and a conductive cloth. A backrest supported by the chair body, an upper covering covering at least a front surface of the elastic supporting body, and a backrest interposed between the elastic supporting body and the upper covering. 2. The chair according to claim 1, wherein the chair is made of a conductive cloth with raised hair. 3. The chair according to claim 1, wherein the conductive cloth and the upper fabric are bonded to each other via a partially attached bonding element. 4. The chair according to claim 3, wherein the adhesive element is in the form of a net or a non-woven fabric. 5. The chair according to claim 1, wherein the conductive cloth and the elastic support are bonded to each other, and the conductive cloth and the upholstery are not bonded to each other. 6. A conductive cloth which extends from a part of an edge of a seat or a backrest to an opposing edge, and has an end electrically connected to a grounding point provided near said edge. The chair according to claim 1, 2, 3, 4 or 5, wherein the chair is connected. 7. A conductive cloth is provided limited to a certain area inside the edge of the seat or the backrest, and a part thereof is provided near the edge of the seat or the backrest via the conductive connecting element. 2. An electrical connection to a grounding point,
The chair according to 2, 3, 4 or 5. 8. The conductive cloth according to claim 1, wherein at least a part of the conductive cloth is provided with a surface area extending portion having unevenness in a planar direction. Chair. 9. The non-woven fabric coated with an electron conjugated polymer is used as the conductive cloth.
The chair according to 2, 3, 4, 5, 6, 7, or 8.