JP2008038440A - Spacer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a spacer superior in sliding property, durability and cushioning property. <P>SOLUTION: The spacer 14 is formed to be adhered to both side faces in the opening/closing direction of door plates constituting a sliding door with a double-faced tape 24 for blocking a space which is formed between the door plates when closing the sliding door. Namely, the spacer 14 comprises a base material 20 formed of a thermoplastic elastomer and a fluff body 21 thermally welded onto the base material 20. The fluff body 21 is formed by a pile fabric erected on a base cloth 30 with a plurality of fluffs 31 pile-woven. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a gap material for closing a gap formed around a door, for example, when a door such as a sliding door is closed, and suppressing intrusion of wind and dust.

  In general, when a door such as a sliding door is closed, a slight gap is formed around the door, so that wind, dust, and the like are likely to enter from the gap. For this reason, a gap material is often used to close the gap. Such a gap material is usually made of an elastomer such as rubber. However, when this gap material is made of an elastomer, shape retention and cushioning properties can be ensured, but the surface of the elastomer is exposed, so that the slidability and design at the time of opening and closing the door will be low. .

In this case, in order to improve the slidability and the design at the time of opening and closing the door, it can be considered that many fluffs are erected on the surface of the elastomer. As a gap material in which a large number of fluffs are erected on the surface of such an elastomer, the one shown in Patent Document 1 is conventionally known. That is, the gap material of Patent Document 1 includes a hollow protrusion made of an elastomer having a substantially semicircular arc shape in which short fibers (fluff) are electrostatically flocked on the surface. Here, electrostatic flocking means that an adhesive is applied in advance to the surface of the hollow ridge to be flocked, and the short fibers are made to fly toward the surface of the hollow ridge using the electrostatic attraction force. This is a processing method in which short fibers are planted on the surface of the hollow ridge by being attached in an upright state.
JP-A-11-303502

  By the way, in the gap | interval material of patent document 1, since the short fiber is planted on the surface of the hollow ridge, the slidability and designability at the time of opening and closing of a door are obtained. However, only the base end of the short fiber is adhered to the surface of the hollow ridge by an adhesive, and therefore, the short fiber is easily dropped from the surface of the hollow ridge due to friction during sliding of the door. When the fibers fall off, the gap material has a problem that the initial slidability and designability cannot be maintained for a long time. Further, the gap material of Patent Document 1 has a short length of short fibers of 0.5 mm on the surface of the hollow ridge due to the nature of electrostatic flocking, so that the bulk of the short fiber portion is sufficiently secured. In addition, cushioning properties were hardly obtained with this short fiber portion.

  The present invention has been made paying attention to such problems. The object is to provide a gap material excellent in slidability, durability and cushioning properties.

  In order to achieve the above object, the invention according to claim 1 is a gap material for closing a gap formed around the door when the door is closed, and is attached to the door. And a fluff body provided on the base material, and the fluff body is composed of a pile fabric in which a plurality of fluff is erected on a base fabric. To do.

  According to the said structure, since the fluff body is comprised by the pile fabric, the length of each fluff standing on a base fabric is made into the conventional product (each fluff was flocked on the surface of the base material by electrostatic flocking). It is possible to make it longer than the one). For this reason, by increasing the length of each fluff, the bulk of the fluff is sufficiently secured, and the cushioning property of the fluff itself is enhanced. Therefore, the cushioning property can be remarkably improved by the synergistic effect of the cushioning property of the base material made of elastomer and the cushioning property of the fluff. Moreover, since the fluff body is composed of a pile fabric in which each fluff is woven so as to be entangled with the fibers of the base fabric, the fluff is prevented from falling off and the durability is increased. Furthermore, the sliding resistance when the door is opened and closed is reduced by the fluff. Therefore, it is possible to provide a gap material excellent in slidability, durability, and cushioning properties.

  The invention according to claim 2 is the invention according to claim 1, wherein the fluff body has a surface opposite to a side where each fluff of the base fabric is erected on the door of the base material. The gist is that it is heat-welded on the surface opposite to the side to be worn.

According to the said structure, it becomes possible to adhere a fluff body to a base material easily and firmly.
The gist of the invention described in claim 3 is that, in the invention described in claim 1 or 2, the base material has a hollow shape.

According to the said structure, since a base material becomes easy to be crushed by external force, it becomes possible to further improve the cushioning property of this base material.
The gist of the invention described in claim 4 is that, in the invention described in claim 3, the base material has a concave groove formed on the inner surface on the side where the fluff is provided.

  According to the above configuration, when an external force is applied to the base material, the base material is crushed while being bent along the concave groove. Therefore, for example, by uniformly forming a plurality of concave grooves in the base material, the base material is crushed in a well-balanced manner by an external force, so that the cushioning property of the base material can be further enhanced.

  The invention according to claim 5 is the invention according to claim 3 or claim 4, wherein the base material is formed with a thin-walled portion that is thinner than other parts of the base material, The gist is that the fluff body is provided in the thin-walled portion.

According to the said structure, when external force acts with respect to a base material, since this base material will be easily crushed in the thin part with thin thickness, it becomes possible to further improve the cushioning property of this base material.
A sixth aspect of the present invention is the invention according to any one of the third to fifth aspects, wherein the base material is bent or curved so as to protrude inside the base material. The gist is that the part is formed.

  According to the above configuration, since the base material has high elasticity in the constricted portion, when an external force is applied to the base material, the base material is more easily crushed in the constricted portion having particularly high elasticity. It becomes possible to remarkably improve the cushioning property of the base material.

  According to the present invention, it is possible to provide a gap material excellent in slidability, durability, and cushioning properties.

DESCRIPTION OF EMBODIMENTS Hereinafter, an embodiment in which the present invention is embodied in a gap material used for a sliding door will be described with reference to the drawings.
As shown in FIG. 1, an indoor suspension type sliding door 11 is provided in the room as a door for partitioning the room, and there are a plurality of sliding doors 11 (only two are shown in FIG. 1). The rectangular plate-shaped door plate 12 is configured. Each door plate 12 is suspended from the ceiling via a single rail (not shown) provided on the ceiling 13, and can be slid along the rail in the opening and closing direction (left and right in FIG. 1). Yes.

  A long gap member 14 having the same length as the height of each door plate 12 is attached to both sides in the opening and closing direction of each door plate 12 so as to extend in the vertical direction. Then, the sliding doors 11 are closed and the room is partitioned by sequentially sliding and moving the door plates 12 toward the wall 15 in the room. In this case, slight gaps formed between the door plates 12 and between the door plate 12 and the wall 15 are blocked by the gap materials 14. A slight gap is formed between each door plate 12 and the floor 16.

Next, the gap material 14 will be described in detail.
As shown in FIGS. 2 and 3, the gap member 14 includes a base material 20 made of a thermoplastic elastomer, and a fluff 21 provided on the base material 20. The hardness of the thermoplastic elastomer constituting the substrate 20 is preferably in the range of 30 to 90 degrees in terms of Shore A hardness (JIS standard: K6253-1997) in consideration of easy crushing and restoring property, More preferably within the range of 70 degrees.

  Further, the base material 20 has a hollow shape, that is, a substantially semi-cylindrical shape. Of the peripheral wall, the flat plate portion is the flat portion 22 and the curved portion is thicker than the flat portion 22. The thin thin portion 23 is formed. Therefore, the elasticity of the thin portion 23 is higher than the elasticity of the flat portion 22. Moreover, the double-sided tape 24 is provided in the outer surface of the flat part 22, and the clearance gap material 14 is stuck on the right-and-left both sides | surfaces of each doorplate 12 (refer FIG. 1) via this double-sided tape 24. FIG. ing.

  In the base material 20, a plurality of concave grooves 23 a are formed on the inner surface of the thin portion 23 along the longitudinal direction of the thin portion 23 so as to form a pair with the central portion in the short direction of the thin portion 23 interposed therebetween. It extends so as to be parallel to each other. In the present embodiment, three pairs (six grooves) 23 a are formed on the inner surface of the thin portion 23 of the substrate 20.

  As shown in FIGS. 3 and 4, the fluff body 21 includes a strip-shaped base cloth 30 and a plurality of fluff 31 erected over almost the entire surface of the base cloth 30. The base fabric 30 is formed using a woven fabric made of a material having high durability and flexibility (in this embodiment, polypropylene). That is, the base fabric 30 of this embodiment is formed using a woven fabric formed by weaving the weft yarn 30a and the warp yarn 30b made of polypropylene fibers.

  On the other hand, each fluff 31 constituting the fluff body 21 is made of polypropylene fiber, and is erected by pile weaving on the base fabric 30 in a state of being bundled by a predetermined number. Therefore, the fluff body 21 is configured by a pile fabric in which each fluff 31 is pile-woven on the base fabric 30. The specification of each fluff 31 constituting the fluff body 21 is set in consideration of low sliding resistance with respect to the door plate 12 and the wall 15, high cushioning properties, and high airtightness. Specifically, the thickness of each fluff 31 (single yarn) is preferably set to 1 to 50 dtex, and more preferably set to 1 to 30 dtex. Further, the density of each fluff 31 (single yarn) is preferably set to 100 to 1,000,000 per square inch, and more preferably set to 100 to 500,000 per square inch. Furthermore, the length of each fluff 31 (single yarn) is preferably set to 1 to 10 mm, and more preferably set to 1 to 5 mm.

Next, a method for manufacturing the gap material 14 will be described.
First, as shown in FIG. 3, the base material 20 is formed by an extrusion method. Then, in a state where the base material 20 is still sufficiently heated, the surface of the fluff body 21 opposite to the side where each fluff 31 of the base fabric 30 is erected is formed on the thin portion 23 of the base material 20. Press contact with the outer surface. Then, the base fabric 30 of the fluff 21 is heat-welded on the base material 20, and the gap material 14 shown in FIG. 2 is obtained. In this case, non-fluff portions 25 (see FIG. 2), which are regions where the fluff 21 is not provided on the base material 20, are formed at both ends of the gap material 14 in the short direction.

Next, the operation of the gap material 14 will be described.
When closing the sliding door 11, first, the door plates 12 are sequentially slid to the wall 15 side. When the door plate 12 positioned closest to the wall 15 contacts the wall 15, the fluff 21 of the gap material 14 is crushed, and then the base material 20 is crushed and the impact at the time of contact with the wall 15 of the door plate 12 is applied. Alleviated. Further, when the door plates 12 come into contact with each other sequentially, the fluff 21 is crushed and the base material 20 is crushed thereafter, and the impact at the time of contact between the door plates 12 is alleviated.

  When the sliding door 11 is closed, the slight gaps between the door plates 12 and between the door plate 12 and the wall 15 are closed by the gap members 14. Further, when the sliding door 11 is closed, if a hand or an object is sandwiched between the door plates 12 or between the door plate 12 and the wall 15, the fluff 21 and the base material 20 are largely crushed. Due to these synergistic effects, the impact received by the hand or object is suitably mitigated. At this time, especially the base material 20 of the gap member 14 is crushed smoothly and largely along the concave groove 23a by the synergistic action of the highly elastic thin portion 23 and the concave groove 23a. This greatly contributes to the mitigation of the impact received by the people.

  On the other hand, when the sliding door 11 is opened, each door plate 12 may be sequentially slid to the side opposite to the wall 15 side. Further, since the door plates 12 and the door plate 12 and the wall 15 are in contact via the fluff 21, the sliding resistance between the door plates 12 and the door plate 12 and the wall 15 when the sliding door 11 is opened and closed. Is reduced.

According to the embodiment described in detail above, the following effects are exhibited.
(1) Since the fluff body 21 is made of a pile fabric, the gap material 14 has a length of each fluff 31 erected on the base fabric 30 on the surface of the base material by electrostatic flocking. It is possible to make the length longer than those obtained by planting short fibers. For this reason, by making the length of each fluff 31 long, the bulk of the fluff body 21 portion of the gap material 14 can be sufficiently secured, and the cushioning property in the fluff body 21 portion can be enhanced. Therefore, the cushioning property of the gap member 14 can be remarkably improved by the synergistic effect of the cushioning property of the base material 20 made of thermoplastic elastomer and the cushioning property of the fluff 21. In addition, since each fluff 31 is woven in a bundle so as to be entangled with the fibers of the base fabric 30, the fluff body 21 is improved in resistance to falling off, bending, cutting, and the like. For this reason, since the durability of the gap member 14 is improved, it can be made to last for a long time. Further, the gap member 14 can reduce sliding resistance when the sliding door 11 is opened and closed by the action of the fluff 21. Therefore, the gap material 14 can be made excellent in slidability, durability, and cushioning properties.

(2) Since the gap member 14 is configured such that the base fabric 30 of the fluff body 21 is thermally welded onto the base material 20, the fluff body 21 can be easily and firmly fixed onto the base material 20.
(3) Since the base material 20 has a hollow shape, the base material 20 is easily crushed when the gap material 14 receives external force when the sliding door 11 is opened and closed. For this reason, the cushioning property of the base material 20 and the cushioning property of the gap member 14 can be further enhanced.

  (4) In the gap member 14, three pairs (six grooves) 23 a are formed in a well-balanced manner on the inner surface of the thin portion 23 of the base material 20 with the central portion in the short direction of the thin portion 23 interposed therebetween. Therefore, in particular, the thin portion 23 of the substrate 20 can be crushed with a good balance while being bent along the concave groove 23a by an external force. Therefore, the cushioning property of the base material 20 and, in turn, the cushioning property of the gap member 14 can be significantly improved.

Hereinafter, examples and comparative examples that further embody the above-described embodiment will be described.
[Example 1]
As shown in FIG. 5, the gap material 14 of the above embodiment was taken as Example 1. That is, in the gap material 14 as Example 1, the height A of the fluff 21 is 3 mm, the thickness B of the thin portion 23 of the base material 20 is 0.8 mm, and the thickness C of the flat portion 22 of the base material 20. Is 1.4 mm, the total height D including the double-sided tape 24 is 15 mm, and the length E in the short direction of the base material 20 is set to 22 mm. Further, in the gap material 14 as Example 1, the hardness of the base material 20 is set to Shore A 35 degrees (JIS standard: K6253-1997), and the thickness (single yarn) of each fluff 31 of the fluff body 21 is set. It is set to 4.17 dtex, and the density of each fluff 31 of the fluff body 21 is set to 174,874 per inch. In addition, the length of the longitudinal direction of the clearance gap material 14 of this Example 1 is set to 43.2 mm.

[Comparative Example 1]
As shown in FIG. 6, a commercially available gap material 50 was used as Comparative Example 1. That is, in the gap member 50 as the comparative example 1, a large number of rayon short fibers 52 are implanted by electrostatic flocking on the outer surface of a substantially square cylindrical natural rubber substrate 51. Further, in the gap material 50 as the comparative example 1, the length F of the short fibers 52 is set to 0.2 mm, and the thickness G of the base material 51 (the wall thickness is constant) is set to 1.1 mm. The overall height H is set to 13 mm, and the overall length I in the short direction is set to 21 mm. Note that the length in the longitudinal direction of the gap member 50 of Comparative Example 1 is set to 43.2 mm, similar to the gap member 14 of Example 1.

[Evaluation of compression performance]
As shown in FIG. 7, the compression performance test was performed on each of Example 1 and Comparative Example 1 using a compression device capable of moving up and down a disk-shaped compression member 60 made of a metal with a diameter of 30 mm on a base 61. It went as follows.

  First, the gap material 14 of Example 1 is compressed at a compression speed of 5 mm per minute from the fluff 21 side on the pedestal 61 by the compression member 60, and the compression load (N) and compression ratio (%) at this time ) Is indicated by a solid line M in the graph of FIG. Moreover, the crushing condition of the gap | interval material 14 in the singular point X and the singular point Y in the continuous line M in the graph of FIG. 10 was shown to FIG. 8 (a) and FIG.8 (b), respectively. In addition, the singular point X and the singular point Y have shown the point where the compressive load (N) in the continuous line M is changing suddenly.

  Subsequently, in the same manner as in Example 1, the gap material 50 of Comparative Example 1 is compressed, and the relationship between the compression load (N) and the compression ratio (%) at this time is one point in the graph of FIG. This is indicated by a chain line N. Moreover, the crushing condition of the gap | interval material 50 in the singular point X and the singular point Z in the dashed-dotted line N in the graph of FIG. 10 was shown to Fig.9 (a) and FIG.9 (b), respectively. In addition, the singular point X and the singular point Z have shown the point where the compressive load (N) in the dashed-dotted line N is changing suddenly.

The test results showed that in Example 1, the compression load was 5N and the compression ratio was about 76%, whereas in Comparative Example 1, the compression ratio was about 55% even when the compression load was 20N.
[Discussion]
From the above result, it was shown that the compression load of Example 1 is lower than that of Comparative Example 1 and is easily crushed. That is, it was shown that Example 1 has better compression performance (higher cushioning properties) than Comparative Example 1.

(Example of change)
In addition, the said embodiment can also be changed and actualized as follows.
As shown in FIG. 11, in the base material 20 of the gap material 14, the thickness of the flat portion 22 and the thickness of the thin portion 23 may be the same. In this case, the number of the concave grooves 23a formed on the inner surface of the thin portion 23 may be appropriately increased or decreased, or may be zero.

  As shown in FIG. 12, the gap member 14 is bent by the base material 20 by bending the non-fluff portion 25 of the base material 20 so as to protrude inside the base material 20. 70 may be formed. In this way, since the elasticity of the base material 20 can be enhanced by the constricted portion 70, when an external force is applied to the base material 20, the base material 20 is further crushed particularly in the constricted portion 70. It becomes easy and the cushioning property of this base material 20 and by extension, the cushioning property of the clearance gap material 14 can be improved significantly.

-The material of the base fabric 30 and each fluff 31 constituting the fluff 21 may be changed to polyamide (PA), polyethylene terephthalate (PET), fluororesin, or the like.
-The base material 20 may be comprised not by the hollow shape (cylindrical shape) but by the solid body.

The gap material 14 may be manufactured by adhering the base fabric 30 of the fluff body 21 on the base material 20 with an adhesive.
The gap member 14 may be provided at a contact portion of the wall 15 with the door plate 12 (the sliding door 11).

  The gap material 14 may be used for all doors such as a double door and a revolving door, in addition to the sliding door 11.

The front view of the sliding door in embodiment. The perspective view of the clearance gap material in embodiment. The disassembled perspective view of the clearance gap material in embodiment. FIG. 4 is a cross-sectional view taken along line 4-4 in FIG. 3. FIG. 3 is a front view of a gap material according to the first embodiment. The front view of the clearance gap material of the comparative example 1. FIG. FIG. 3 is a perspective view showing a method for evaluating compression performance in Example 1. (A) is a front view showing the state of the gap material of Example 1 at singular point X, (b) is a front view showing the state of the gap material of Example 1 at singular point Y. (A) is a front view which shows the state of the clearance material of the comparative example 1 in the singular point X, (b) is a front view which shows the state of the clearance material of the comparative example 1 in the singular point Z. The graph which shows the relationship between the compression load of the clearance gap material of Example 1, and the clearance gap material of the comparative example 1, and a compression ratio. The front view of the gap material of the example of a change. The front view of the gap material of the other example of a change.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 11 ... Sliding door as a door, 14 ... Gap material, 20 ... Base material, 21 ... Fluff body, 23 ... Thin-walled part, 23a ... Groove, 30 ... Base cloth, 31 ... Fluff, 70 ... Narrow part.

Claims (6)

A gap material for closing a gap formed around the door when the door is closed,
A base material made of an elastomer attached to the door, and a fluff provided on the base material,
The fluff body is composed of a pile fabric in which a plurality of fluffs are erected on a base fabric. The fluff body is heat-welded on the surface of the base fabric opposite to the side where each fluff is erected on the surface of the base material opposite to the side attached to the door. The gap material according to claim 1, wherein The gap material according to claim 1, wherein the base material has a hollow shape. The gap material according to claim 3, wherein the base material has a groove formed on an inner surface on the side where the fluff is provided. The thin-walled part thinner than the other part in this base material is formed in the said base material, The said fluff body is provided in this thin-walled part, The Claim 3 or Claim characterized by the above-mentioned. 4. The gap material according to 4. The gap according to any one of claims 3 to 5, wherein a constricted portion that is bent or curved so as to protrude inside the base material is formed on the base material. Wood.

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