JP2003097101A - Door knob cover - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sanitary door knob cover being mounted easily and allowing it to be recognized even at night. SOLUTION: An inward flange part is provided at one end of a cylindrical cover part, the other end part is formed into a thin wall part, and the cover part and the flange part are molded by thermoplastic elastomer resin. A fluorescent part containing luminous pigment formed by blending luminous pigment into thermoplastic elastomer resin is provided in the cover part and/or the flange part, and durometer A hardness of the thermoplastic elastomer resin is A90 or less. Preferably, the thermoplastic elastomer resin containing antibacterial agent is used in at least the cover part. As the thermoplastic elastomer resin, any of thermoplastic polyester elastomer resin, thermoplastic urethane elstomer resin, thermoplastic styrene elastomer resin, and thermoplastic olefin elastomer resin can be used.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a doorknob cover that can be touched by unspecified or large numbers of people such as schools, hospitals, homes, etc., and more specifically, a doorknob cover made of an elastic thermoplastic elastomer. Regarding

[0002]

2. Description of the Related Art Most of the door knobs used in the past are made of metal and have a smooth surface so that they are hard to slip and grip, and may not turn unless they are turned with a certain grip force. Elderly people with weakness, children and handicapped people may find it difficult to turn. In addition, the doorknobs of schools and hospitals are in contact with an unspecified number of people, which is a sanitary problem.

Various proposals have been made to solve such problems. For example, a door knob cover in which an uneven slip surface is formed on the surface of an elastic cylindrical body (JP-A-10-331491) and a door knob cover in which an antibacterial agent is added to a thermoplastic resin (JP-A-9- JP-A-137644 and JP-A-11-62331) have been proposed.

[0004]

In the above-mentioned door knob cover known in the related art, the door knob cover having an uneven slip surface formed prevents the slip and increases the grip force. Even children can easily turn it. However, the door knob, which is touched by an unspecified number of people, is more dirty than the metal knob before being covered, and there is a problem in hygiene. Further, the antibacterial door knob cover can maintain the surface of the door knob hygienically by antibacterial and antifungal action, but is not always satisfactory in touch and wearability.

Further, as described in JP-A-11-350804, there is known a door knob formed of a material containing a phosphorescent phosphor so that the position of the door knob can be recognized even in a dark place. However, in this door knob containing a phosphorescent phosphor, since the entire cover is molded with a material containing an expensive phosphorescent phosphor, the doorknob cover becomes expensive and cannot be put to practical use.
Further, since the above-mentioned known door knob cover is simply formed in a cylindrical shape, the phosphorescent phosphor cannot be effectively arranged.

[0006]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and is always hygienic due to its antibacterial action, can be easily rotated even with a weak grip, and maintains fluorescence for a long time, especially in a dark place. An object of the present invention is to provide a door knob cover that can display the position of the door knob.

[0007]

In order to achieve the above object, a door knob cover according to the present invention is provided with an inward flange portion at one end of a cylindrical cover portion, and the other end portion is formed thin. The cover part and the flange part are formed of a thermoplastic elastomer resin, and the cover part and / or the flange part is provided with a fluorescent part containing a phosphorescent pigment in which a thermoplastic elastomer resin is mixed with a phosphorescent pigment, and a durometer of the thermoplastic elastomer resin. It is characterized in that the A hardness is A90 or less. At least the cover portion is preferably formed of a thermoplastic elastomer resin containing an antibacterial agent. The fluorescent portion containing the phosphorescent pigment may be provided on all or part of the flange portion, and may be provided in a ring shape or may be provided in a dot shape on the front surface of the flange portion. Further, a fluorescent portion containing a phosphorescent pigment may be provided on the outer peripheral surface of the cover portion,
In this case, the outer peripheral surface of the cover portion may be provided in the axial direction in the form of stripes or strips, or the outer peripheral surface of the cover portion may be provided in the circumferential direction in the form of stripes or strips. As the thermoplastic elastomer resin, it is preferable to select and use any one of a thermoplastic polyester elastomer resin, a thermoplastic urethane elastomer resin, a thermoplastic styrene elastomer resin, and a thermoplastic olefin elastomer resin.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 shows the first aspect of the present invention.
In the embodiment, the cover body 10 includes a cover portion 11 and a flange portion 13. The cover portion 11 is a cylindrical body having an inner diameter slightly smaller than the outer diameter of the door knob to be mounted, and a rear end portion 14 (opposite the flange portion 13).
Is formed to be slightly thin. By forming the rear end portion 14 into a thin wall, the rear end portion 14 can be easily expanded when mounted on the door knob, and can be easily fitted.

The material for molding the cover body 10 includes
Use thermoplastic elastomer resin instead of rubber. The thermoplastic elastomer resin is preferably a thermoplastic polyester elastomer resin, a thermoplastic urethane elastomer resin, a thermoplastic styrene elastomer resin, or a thermoplastic olefin elastomer resin.

It is preferable to add an antibacterial agent to the elastomer resin, and a known antibacterial agent can be used as the antibacterial agent. The antibacterial agent may be an inorganic antibacterial agent or an organic antibacterial agent. As the inorganic antibacterial agent, an antibacterial agent containing any one of silver ion, gold ion and zinc ion such as zeolite antibacterial agent, apatite antibacterial agent and calcium phosphate antibacterial agent can be used. In addition, organic antibacterial agents include imidazole antibacterial agents,
A thiazole antibacterial agent, an iodine antibacterial agent, a phenol antibacterial agent, etc. can be used.

The content of the antibacterial agent is within the range of 2 to 10% by weight. This is because a sufficient antibacterial action cannot be obtained with a blending amount of 2% by weight or less, and an antibacterial action commensurate with the blending amount cannot be obtained with a blending amount of 10% by weight or more.

The flange portion 13 abuts against the front surface of the door knob when it is fitted to the door knob to prevent further fitting, and prevents the slip of the cover portion 11 from the door knob by being pressed against the front surface of the door knob. To do. The entire flange portion 13 is a fluorescent portion 13a containing a phosphorescent pigment, which is made of a thermoplastic elastomer resin containing a phosphorescent pigment.
It is formed by. The amount of the phosphorescent pigment blended is 3 to
Within the range of 15% by weight. If it is less than 3% by weight, a sufficient fluorescent effect cannot be obtained. Further, if the amount is 15% by weight or more, the fluorescent effect is enhanced, but about 15% by weight is sufficient, and the phosphorescent pigment is expensive and increases the cost.

It is preferable to use the same elastomer resin as that of the cover portion in consideration of adhesiveness as the thermoplastic elastomer resin containing the luminous pigment. That is, when the cover portion 11 is a thermoplastic polyester-based elastomer resin, the fluorescent portion 13a (flange portion 13) containing the phosphorescent pigment is a thermoplastic polyester-based elastomer resin containing the phosphorescent pigment, and the cover portion 11 is a thermoplastic urethane-based elastomer. In the case of a resin, the fluorescent portion 13a (flange portion 13) containing a phosphorescent pigment is a thermoplastic urethane elastomer resin containing a phosphorescent pigment, and when the cover portion 11 is a thermoplastic styrene elastomer resin, a fluorescent pigment containing a phosphorescent pigment is used. Part 13
When a (flange portion 13) is a thermoplastic styrene-based elastomer resin containing a phosphorescent pigment and the cover portion 11 is a thermoplastic olefin-based elastomer resin, the fluorescent portion 13a (flange portion 13) containing a phosphorescent pigment is used as a phosphorescent heat-containing pigment. Use a plastic olefin elastomer resin.

The thermoplastic elastomer resin is used for the cover portion 11 and the fluorescent portion 13a containing the luminous pigment (flange portion 1).
In any of 3), the durometer A hardness is A90 or less, preferably A40 to 85. This is in consideration of wearability and touch.

Specifically, when the cover portion 11 is made of a thermoplastic polyester elastomer resin, "Elastage ES 5021A" manufactured by Tosoh Co., Ltd., which is comfortable to the touch and is excellent in oil resistance, water resistance or abrasion resistance, is used. (Trade name) (Durometer A hardness: A49) is used, and the fluorescent portion 13a (flange portion 13) containing a phosphorescent pigment is a thermoplastic polyester elastomer resin containing a phosphorescent pigment, which has excellent moldability and adhesiveness. The company's "Primalloy A1800" (trade name) (durometer A hardness: A85) blended with "Fosfacolor" (trade name) manufactured by Dainichi Seika Kogyo Co., Ltd. as a phosphorescent pigment can be used.

When the cover portion 11 is made of a thermoplastic urethane elastomer resin, "Kuramiron U A160S" (trade name, manufactured by Kuraray Co., Ltd., which has a good feel and is excellent in oil resistance, water resistance or abrasion resistance. ) (Durometer A hardness: A60), and the fluorescent portion 13a (flange portion 13) containing a phosphorescent pigment is a thermoplastic urethane elastomer resin containing a phosphorescent pigment, "Kuramiron UA160S" (trade name) manufactured by Kuraray Co., Ltd. Durometer A hardness: A60) or "Resamine P 2275" (trade name) manufactured by Dainichiseika Co., Ltd. (trade name) (Durometer A hardness: A75) as a phosphorescent pigment, "phospha color" manufactured by Dainichiseika Kogyo Co., Ltd. (trade name) ) Can be used.

When the cover portion 11 is made of a thermoplastic styrene elastomer resin, "Septon Compound" manufactured by Kuraray Plastics Co., Ltd., which has a good feel, is used.
CJ001 "(trade name) (Durometer A hardness: A4
0) is used, and the fluorescent portion 13a (flange portion 13) containing a phosphorescent pigment is made of Kuraray Plastics Co., Ltd. "Septon Compound CJ 001" (trade name) (durometer A) as a thermoplastic styrene elastomer resin containing a phosphorescent pigment. Hardness: A40) with a phosphorescent pigment blended with "phospha color" (trade name) manufactured by Dainichiseika Kogyo Co., Ltd. can be used.

When the cover portion 11 is made of a thermoplastic olefin elastomer resin, "Oleflex P13" manufactured by Nippon Polyolefin Co., Ltd., which has a good feel, is used.
2G-1 "(trade name) (Durometer A hardness: A5
5) is used, and the fluorescent portion 13a containing the phosphorescent pigment (flange portion 13) is a thermoplastic styrene-based elastomer resin containing the phosphorescent pigment, "Oleflex P132G-1" (trade name) manufactured by Nippon Polyolefin Co., Ltd. (Durometer A). Hardness: A55) to which "phospha color" (trade name) manufactured by Dainichi Seika Kogyo Co., Ltd. is blended as a phosphorescent pigment can be used.

In the above embodiment, the flange portion 13
Although the whole is the fluorescent portion 13a containing the phosphorescent pigment, only the outer peripheral portion or the inner peripheral portion of the flange portion 13 may be the fluorescent portion 13a containing the phosphorescent pigment. In addition, the flange portion 13 may be provided with a plurality of ring-shaped fluorescent portions 13 a containing a phosphorescent pigment.

FIG. 2 shows a second embodiment of the present invention,
The fluorescent portion 13b containing the phosphorescent pigment is arranged in a dot shape on the front surface of the flange portion 13. The cover body 10 is the cover part 1.
1 and the flange portion 13 and the configuration in combination with the fluorescent portion containing the phosphorescent pigment are the same as in the first embodiment. Therefore, since the thermoplastic elastomer resin used is the same as that of the first embodiment, its description is omitted. In this embodiment, the fluorescent portion 13 containing the phosphorescent pigment.
The difference is that b is embedded or projected in a dot shape on the front surface of the flange portion 13.

The fluorescent portion 13b containing the luminous pigment is circular,
The shape may be a number, a symbol, a character, etc., as well as a shape such as a triangle or a diamond. Further, the size and number of the fluorescent portion 13b containing the luminous pigment may be appropriately determined depending on the size of the inner diameter of the flange portion, the shape of the fluorescent portion 13b containing the luminous pigment, and the like. Also,
The outer peripheral surface of the cover portion 11 may be provided with a concavo-convex shape by knurling, warping, graining or the like to prevent slippage.

FIG. 3 shows a third embodiment of the present invention, in which a fluorescent portion 13c containing a phosphorescent pigment is arranged on the outer peripheral surface of the cover 11. Also in this embodiment, the cover body 10 is composed of the cover portion 11 and the flange portion 13 as in the first embodiment. Therefore, the description of the thermoplastic elastomer resin used is omitted. This embodiment is different in that the fluorescent portion 13c containing a phosphorescent pigment is embedded or projected on the outer peripheral surface of the cover portion 11 in a stripe shape or a strip shape.

The surface of the fluorescent portion 13c containing the luminous pigment is
Although it may be flush with the outer peripheral surface of the cover portion 11, it may be formed so as to slightly project from the outer peripheral surface of the cover portion 11. When the surface of the fluorescent portion 13c containing the phosphorescent pigment is formed so as to protrude from the outer peripheral surface of the cover portion 11, the outer peripheral surface becomes an uneven surface, which is effective in preventing slipping of the hand.

The width dimension, the number, etc. of the fluorescent portion 13c containing the phosphorescent pigment may be appropriately determined by the combination thereof. That is, the number of the fluorescent portions 13c containing the phosphorescent pigment may be increased when the width dimension is decreased, and conversely, the number may be decreased when the width dimension is increased. Further, in any of the above-mentioned embodiments, it is possible to mix an antibacterial agent together with the phosphorescent pigment in the fluorescent portion containing the phosphorescent pigment.

In the third embodiment, the fluorescent portion 13c containing the phosphorescent pigment is formed in a streak shape or a strip shape and arranged on the outer peripheral surface of the cover portion 11 in the axial direction. You may arrange | position in the outer peripheral surface in the circumferential direction. In this case, the fluorescent portion 13c containing the phosphorescent pigment can be formed in one or more stripes or strips.

The fluorescent portion 13c containing the luminous pigment is not in the form of stripes or strips, but the fluorescent portion 13b containing the luminous pigment.
Similarly to the above, the outer peripheral surface of the cover portion 11 may be arranged in a dot shape. In this case, the shape of the fluorescent portion containing the phosphorescent pigment may be a circle, a triangle, a rhombus, or the like, and may be a number, a symbol, a letter, or the like. Further, the array may be arranged in rows or randomly.

In order to mold the cover body 10 having the above-mentioned structure, it is possible to mold the cover main body 10 using a two-color different material injection molding machine by a known two-color molding method. In this case, the fluorescent portion containing the phosphorescent pigment and the cover portion and / or the flange portion which are other portions are simultaneously injection-molded. Further, the cover body 10 can be molded by the insert molding method. In this case, first, a fluorescent portion containing a phosphorescent pigment or other portion is injection-molded by an ordinary single-color injection molding machine, and then the molded product is inserted into a mold and the remaining portion is injection-molded. .

[0028]

As described above, according to the present invention, since the thermoplastic elastomer resin is used instead of the rubber, various colorings are possible and the fitting is easy, but after the fitting, it is combined with the flange portion. It does not come off because it comes in close contact with the door knob. Further, since the frictional force is increased, it can be turned even with a weak grip, and it can be easily used especially by elderly people and children. In addition, since it contains an antibacterial agent, it is hygienic, and by providing a fluorescent portion containing a phosphorescent pigment, the fluorescent portion can be kept fluorescent for a long time even in a dark place, and can be used safely at night. Further, since the front end of the door knob is covered with the flange portion, there is an effect that injury is reduced even if the body hits.

[Brief description of drawings]

FIG. 1 is a cross-sectional perspective view showing a first embodiment of the present invention.

FIG. 2 is a sectional perspective view showing a second embodiment of the present invention.

FIG. 3 is a perspective view showing a third embodiment of the present invention.

FIG. 4 is an explanatory view of a door knob, which is indicated by an alternate long and short dash line when the cover body according to the present invention is fitted.

[Explanation of symbols]

10 Cover body 11 Cover 13 Flange 13a, 13b, 13c Fluorescent part containing phosphorescent pigment

Claims (8)

[Claims] 1. A cylindrical cover portion is provided with an inwardly facing flange portion at one end, the other end portion is formed thin, and the cover portion and the flange portion are molded from a thermoplastic elastomer resin, and the cover portion and / or Alternatively, the flange portion is provided with a fluorescent portion containing a phosphorescent pigment in which a thermoplastic elastomer resin is mixed, and the durometer A hardness of the thermoplastic elastomer resin is A90 or less. 2. The door knob cover according to claim 1, wherein at least the cover part is formed of a thermoplastic elastomer resin containing an antibacterial agent. 3. The door knob cover according to claim 1 or 2, wherein all or part of the flange portion is a fluorescent portion containing a luminous pigment. 4. The door knob cover according to claim 1, wherein the fluorescent portion containing the phosphorescent pigment is arranged in a dot shape on the front surface of the flange portion. 5. The door knob cover according to claim 1, wherein the fluorescent portion containing the luminous pigment is arranged on an outer peripheral surface of the cover portion. 6. The door knob cover according to claim 1, wherein the fluorescent portion containing the phosphorescent pigment is arranged on the outer peripheral surface of the cover portion in a stripe shape or a belt shape in the axial direction. 7. The door knob cover according to claim 1, wherein the fluorescent portion containing the phosphorescent pigment is arranged on the outer peripheral surface of the cover portion in a stripe shape or a strip shape in the circumferential direction. 8. The thermoplastic elastomer resin is selected from the group consisting of a thermoplastic polyester elastomer resin, a thermoplastic urethane elastomer resin, a thermoplastic styrene elastomer resin, and a thermoplastic olefin elastomer resin. The door knob cover according to any one of 1 to 7.