JPH08876U - Door knob cover - Google Patents

Abstract

(57) [Summary] [Purpose] To eliminate slipping and slipping when operating the knob of a conventional knob cover that is highly flexible and easy to install. [Composition] Soft cloth such as woven or knitted fabric is used as the outer material.
Used for (1), a high-friction non-woven fabric (2) having a sliding friction resistance value of 50 g or more was attached to the inner surface to form a door knob cover (3). [Effect] The knob cover does not slip when the door knob is turned, and the door can be smoothly opened and closed without strongly gripping the knob cover unlike the conventional case.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a non-slip material for a door knob cover having a large anti-slip effect.

[0002]

[Prior art]

 Conventionally, a door opening / closing knob is equipped with a cover that is wrapped with a woven or non-woven fabric (hereinafter referred to as a fabric) to prevent the knob from becoming dirty and to serve as interior decoration. When opening the door of the room, the knob is gripped from above this cover and the knob is turned to open the door, but the cover slips and the knob is difficult to turn, so there is the inconvenience that the knob must be firmly gripped. In order to improve this inconvenience, a cover for a knob having an anti-slip function has been proposed, for example, as disclosed in Japanese Utility Model Laid-Open Nos. 2-64665 and 2-95768.

[0003]

[Issues to be solved by the device]

 However, the knob covers that have already been proposed, including the devices described in the above publications, have a non-slip effect, and do not have the same soft feeling as cloth, knobs with different sizes and shapes, and decorativeness. Also poor. The present invention provides a cover for a knob which has a large sliding friction resistance with respect to the knob even though it has a cloth-like flexibility.

[0004]

[Means for solving the problem]

 The present invention solves the above-mentioned problems by disposing a non-woven cloth having extremely large sliding friction resistance on the inner surface of the cloth forming the knob cover. That is, the knob cover according to the present invention is characterized in that a high-friction non-woven fabric having a sliding friction resistance value of 50 g or more measured by the following measuring method is joined to the inner surface side of the cover. . Place a 10 cm x 10 cm sample (nonwoven fabric) on a mirror-finished flat glass placed on a horizontal surface, place an aluminum plate of 45 mm x 45 mm and a weight of 13 g in the center, and place a 100 g weight on this aluminum plate. Place a weight on the sample, attach a clip to the end of the sample to attach a string, and hang a weight on the end of the string via a pulley. The weight of the weight when the sample starts to move (g).

The high-friction non-woven fabric used in the present invention comprises 5 to 30% by weight of acrylic acid ester and / or methacrylic acid ester, and 0 to 0 ethylene carboxylic acid selected from acrylic acid, methacrylic acid and maleic acid. 10 to 10% by weight, the total of these is 5 to 30% by weight, and an ethylene copolymer consisting of ethylene carboxylic acid type monomer and 95 to 70% by weight of ethylene is the first component, and the melting point (T ° C) is 130 < A non-woven fabric having a basis weight of 30 to 150 g / m ² containing a composite resin in which a thermoplastic resin having T <270 is used as a second component, and the first component occupies at least 70% of the fiber surface is suitable. Particularly preferred is a non-woven fabric in which the first component is joined by heat fusion and the composite fiber occupies 70% or more of the surface.

The first component of the above composite fiber is a copolymer of ethylene carboxylic acid ester such as acrylic acid ester and methacrylic acid ester and ethylene, and the proportion of ethylene carboxylic acid ester in the copolymer is high. The more the sliding friction resistance of the composite fiber becomes better, but if it exceeds 30% by weight, the rubber-like property becomes stronger, and the card passing property becomes poor, making it difficult to form a web. If it is less than 5% by weight, the sliding friction resistance becomes small, and the proportion of ethylenecarboxylic acid ester in the copolymer is 5 to 30% by weight, preferably 10 to 25% by weight. The alcohol portion of the ethylenecarboxylic acid ester preferably has 1 to 5 carbon atoms, and methyl acrylate and ethyl acrylate are particularly preferable.

If the ethylene copolymer is a terpolymer in which ethylene carboxylic acid is added as a monomer component to be added in addition to the above ethylene and ethylene carboxylic acid ester, the surface of the obtained composite fiber is rubber. It has the same physical properties, but does not have a sticky feeling, it comes closer to a more ordinary heat-bonded fiber, and the feeling of discomfort that is lined with rubber disappears. However, if the amount of ethylene carboxylic acid is too large, it is likely to cause thermal crosslinking during melt spinning, and a gel is generated to impair the melt spinnability, so the amount should be kept at 10% by weight or less. Also in the case of a terpolymer, the total amount of ethylene carboxylic acid ester and ethylene carboxylic acid should be 5 to 30% by weight so that the sliding friction resistance does not become small or the rubber-like properties do not become excessive. The melting point of the ethylene copolymer having such a composition becomes lower as the amount of ethylene carboxylic acid monomer increases, and conversely becomes higher as the amount of ethylene increases, but the range is 70 to 130 ° C. .

The melting point (T ° C.) of the second component of the composite fiber is higher than the melting point of the ethylene copolymer of the first component and lower than the decomposition temperature. Considering the stability of melt spinning, 130 < T <270. The thermoplastic resin having such a melting point is selected from polypropylene, polyethylene terephthalate, polybutylene terephthalate, nylon 6, nylon 66 and nylon 12, but a copolymer thereof may be used.

In the structure of the composite fiber, at least 50% or more, preferably 70% or more of the fiber surface is occupied by the first component, and the composite ratio (cross-sectional area ratio) of both components is spinnability, strength and adhesive strength. From the point, 30/70 to 70/30 is preferable.

Using the above polymer, the composite fiber having the above structure is melt-spun, drawn, and then cut into a desired length to obtain a staple fiber. Using this staple fiber, after the card method, cross-layer method, random webber method, wet papermaking method, needle punching method, high-pressure liquid flow method, etc., the first component of the composite fiber is melted by heating and pressed. A high-friction non-woven fabric having a stable form can be obtained by applying a pressing method, for example, by performing heat treatment with a hot air penetrating heat processing machine combined with a roll processing machine or a heat roll processing machine.

In order to give the knob cover a profound feeling, a heavy cloth may be used as the outer material, but the nonwoven fabric on the inner surface side may have a two-layer structure or a three-layer structure. When such a 2-layer or 3-layer non-woven fabric is used, the side in contact with the knob is made of the high friction non-woven fabric and the other side is made of any bulky non-woven fabric made of general-purpose fibers. Good. The basis weight of the above-mentioned non-woven fabric lining the outer material for the cover is practically about 30 to 150 g / m ² . As the cloth for the outer surface of the knob cover, leather can be preferably applied in addition to woven and knitted fabrics such as plain dyed fabric, printed pattern fabric and embroidered fabric.

The surface material and the high-friction non-woven fabric may be bonded by any of a method using an adhesive, a method using heat bonding, a method using needle punching, a method using a high-pressure liquid stream, and the like. Then, after joining the two, they are cut into, for example, a circular shape of an appropriate size, and a cord or rubber cord is attached to the portion located at the neck portion of the knob to form a cover for the knob.

[0013]

[Action]

 The cover for the knob of the present invention is as flexible as the conventional cloth-made knob cover, and not only has the decorative effect and the effect of preventing the knob from being soiled, but the high-friction non-woven fabric on the inner surface is the same when the knob is operated. Prevents slippage between the cover and knob to prevent the knob cover from spinning idle.

[0014]

【Example】

[Example] An ethylene copolymer containing 22% by weight of methyl acrylate as the first component and polypropylene as the second component were used. As shown in FIG. 3, the first component (11) was the sheath and the second component ( The sheath / core type composite fiber (10) (composition ratio 55/45) having the core 12) is melt-extruded, stretched, mechanically crimped, dried, and cut to obtain 2 Denier and 51 mm long staple fibers were used. This fiber was made into a card web using 100% by weight of a card machine and then treated with a hot air penetration type thermal processing machine at 120 ° C with a roll processing machine with a linear pressure of 60 kg / cm to melt the first component of the composite fiber. Then, the fibers were heat-bonded to form a nonwoven fabric having a basis weight of 50 g / m ² .

This non-woven fabric was attached to the back side of a woven fabric having a printed pattern with an adhesive and then cut into a circle having a diameter of 30 cm. As shown in FIG. 2, the front side was the woven fabric (1) and the inner side was a high-friction non-woven fabric. The cover (3) for the knob of (2) was formed, and a plurality of holes were made at positions corresponding to the neck portion of the knob so that the fastening cord (4) was passed through so that it could be fastened to the knob of the door. The cover (3) for this knob was attached to the knob (5) of the door as shown in Fig. 1, and when the knob (5) was turned from above the cover (3) and operated, the cover (3) 3) The door could be opened and closed without slipping.

[Comparative Example] A knob cover of the same shape was made using only the print pattern fabric used in Example 1, and was attached to the knob of the door as in FIG. 1, and the knob was rotated to operate. It slipped and the knob didn't turn properly unless I squeeze it from the top of the cover.

Table 1 shows the results of measuring the sliding friction resistance values (g) on the inner surface side of the cloth (Sample 1) used for the knob cover of the example and the cloth (Sample 2) used for the comparative example.

[0018]

[Table 1]

The sliding friction resistance (g) was measured by the following method. Samples 1 and 2 are each cut into a square of 10 cm x 10 cm, each sample is placed on a mirror-finished plate glass, and a nodule is placed on the plate, and a 45 mm x 45 mm 13 g aluminum plate is placed on it. One weight is 100 g, put a string on the end of the sample, hang the weight on the end of the string via a pulley, and the weight of the weight when the sample starts to move horizontally (g) Was taken as the frictional resistance value.

[0020]

[Effects of the Invention] As described above, the door knob cover of the present invention is formed by joining a high friction non-woven fabric having a sliding friction resistance value of 50 g or more to the inner surface side of the knob cover formed of a flexible sheet material. Since the non-slip material of the cover for the knob is a fibrous non-woven fabric, it has a lot of flexibility, and it is possible to open and close the door smoothly by effectively preventing slippage with the knob while having a fabric feel. . In addition, it can be applied to various knobs with different shapes and sizes, and by devising the outer material, it can exert a decorative effect similar to the conventional knob cover of this kind.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional side view showing a mounted state of a knob cover.

FIG. 2 is a development view of a knob cover.

FIG. 3 is a cross-sectional view of a composite fiber used in a high friction nonwoven fabric.

[Explanation of symbols]

 1 Outer fabric 2 High friction non-woven fabric 3 Knob cover 4 String 5 Knob

Claims (2)

[Scope of utility model registration request] 1. The sliding friction resistance value measured by the following measurement method is 50 on the inner surface side of a dress material made of a flexible sheet material.
High-friction non-woven fabric of g or more is bonded to the door knob cover. 10 cm x 10 on a mirror-finished flat glass placed on a horizontal surface.
Place a cm sample (nonwoven fabric), and 45mm x 4 in the center.
Place an aluminum plate with a weight of 5 mm and a weight of 13 g, put a weight of 100 g on this aluminum plate, load it, attach a clip to the end of the sample to attach a string, and hang the weight on the end of the string via a pulley. Weight (g) of the weight when the sample was lowered and started to move. 2. The high-friction non-woven fabric comprises acrylic acid ester and / or methacrylic acid ester in an amount of 5 to 30% by weight, and ethylene carboxylic acid selected from acrylic acid, methacrylic acid and maleic acid in an amount of 0 to 10% by weight. The first component is an ethylene copolymer composed of 5 to 30% by weight of ethylene carboxylic acid-based monomer and 95 to 70% by weight of ethylene, and the melting point (T ° C) is 130 <T <2.
A non-woven fabric having a basis weight of 30 to 150 g / m ² containing a composite fiber comprising 70 thermoplastic resin as a second component and the first component occupying at least 70% of the fiber surface. A cover for a door knob, characterized in that the composite fiber occupies 70% or more of the surface of the nonwoven fabric.