JP2002200133A - Rubbing ball used for massaging apparatus - Google Patents

Rubbing ball used for massaging apparatus

Info

Publication number
JP2002200133A
JP2002200133A JP2001109883A JP2001109883A JP2002200133A JP 2002200133 A JP2002200133 A JP 2002200133A JP 2001109883 A JP2001109883 A JP 2001109883A JP 2001109883 A JP2001109883 A JP 2001109883A JP 2002200133 A JP2002200133 A JP 2002200133A
Authority
JP
Japan
Prior art keywords
hardness
ball
shore
elastic body
massage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2001109883A
Other languages
Japanese (ja)
Inventor
Kouichi Katou
紘市 加藤
Shuichi Yokoyama
周市 横山
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsuboshi Belting Ltd
Original Assignee
Mitsuboshi Belting Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsuboshi Belting Ltd filed Critical Mitsuboshi Belting Ltd
Priority to JP2001109883A priority Critical patent/JP2002200133A/en
Publication of JP2002200133A publication Critical patent/JP2002200133A/en
Pending legal-status Critical Current

Links

Landscapes

  • Massaging Devices (AREA)
  • Polyurethanes Or Polyureas (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a rubbing ball for a massaging apparatus which achieves a wear resistance as well as better massaging touch. SOLUTION: The rubbing ball 1 is a dough nut-shaped elastic body 3 which has a punched part 2 at the center part thereof and is mounted on a rotating shaft and the elastic body 3 comprises a urethane foam body with the Shore A hardness of 30 to 40 while the urethane foam body contains a skeleton derived from polytetramethylene ether glycol.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明はマッサージ装置の回
転軸に取付けられる揉み玉に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a kneading ball mounted on a rotating shaft of a massage device.

【0002】[0002]

【従来の技術】マッサージ装置において、もむ、ほぐ
す、叩くといった人体に圧力を加えるマッサージ動作部
には回転自在なローラ状の弾性体いわゆる揉み玉が装着
されている。
2. Description of the Related Art In a massaging apparatus, a rotatable roller-shaped elastic body, a so-called kneading ball, is attached to a massaging section for applying pressure to a human body, such as fogging, loosening, and tapping.

【0003】一般に、揉み玉はNBR、EPDMといっ
たゴム加硫組成物で構成されており、回転に耐えうる強
度を付与すべくカーボンブラックが補強材として配合さ
れてなる。マッサージ装置における揉み玉の一般的スペ
ックとしては、60Kg荷重下で1000時間稼動させ
た際に、揉み玉が摩耗したり、永久歪みが生じない性能
が要求されている。
[0003] Generally, kneading balls are composed of a rubber vulcanized composition such as NBR or EPDM, and carbon black is blended as a reinforcing material to impart strength that can withstand rotation. As a general specification of a kneading ball in a massage device, it is required that the kneading ball does not wear out and does not cause permanent deformation when operated under a load of 60 kg for 1000 hours.

【0004】ところがこの揉み玉を上記スペックで稼動
させると、揉み玉が摩耗し、摩耗粉に含まれるカーボン
ブラックが表皮から浮き出て、着衣を汚すといった問題
が発生し、衛生上好ましくなかった。
[0004] However, when the kneading balls are operated with the above specifications, the kneading balls are worn out, and the carbon black contained in the abrasion powder comes out of the skin, causing a problem of soiling the clothes.

【0005】更に上記ゴム組成物で構成された揉み玉
は、一般的にショアーA硬度が50度程度と硬度が高い
ために、マッサージの感触が悪いといった問題が指摘さ
れている。マッサージ装置という性質上、良好なマッサ
ージ感触というのは、揉み玉に要求される品質の中でも
最高位のものである。
[0005] Further, it has been pointed out that a massage ball composed of the rubber composition generally has a high Shore A hardness of about 50 degrees, and thus has a problem of poor massage feeling. Due to the nature of the massage device, a good massage feel is the highest quality among the quality required for a massage ball.

【0006】しかし、前述要求に応えるべくショアーA
硬度を低下させた揉み玉を使用すると、稼動させた際に
更に摩耗量が多くなると共に変形歪みが大きくなり、実
用に耐えうるものではない。
However, in order to meet the above demand, Shore A
When a kneading ball having a reduced hardness is used, the amount of wear is further increased when the device is operated, and the deformation distortion is increased, so that the ball cannot be put to practical use.

【0007】[0007]

【発明が解決しようとする課題】以上の如き問題から、
本発明者らは耐摩耗性に優れかつ良好なマッサージ感触
を有する揉み玉について鋭意研究を重ねた結果、特定種
類の樹脂の選択及び特定の硬度の選択により前記要求を
満たす揉み玉を見出したるものである。
SUMMARY OF THE INVENTION From the above problems,
The present inventors have conducted extensive research on kneading balls having excellent abrasion resistance and a good massage feeling, and as a result, have found kneading balls that satisfy the above requirements by selecting a specific type of resin and selecting a specific hardness. It is.

【0008】[0008]

【課題を解決する為の手段】本発明は上記目的を達成す
る為に、揉み玉を形成する弾性体をショアA硬度を30
〜40度に調節したウレタン発泡体で構成するととも
に、該ウレタン発泡体はポリテトラメチレンエーテルグ
リコール由来の骨格を含んでなることを特徴とする。
According to the present invention, in order to achieve the above object, an elastic body forming a kneading ball has a Shore A hardness of 30.
The urethane foam is characterized by comprising a skeleton derived from polytetramethylene ether glycol while being composed of a urethane foam adjusted to 4040 degrees.

【0009】[0009]

【発明の実施の形態】以下、図面を参照に本発明を説明
する。尚、本発明は以下の実施例に限定されるものでは
ない。図1によると、本発明に係る揉み玉1は、中心部
に回転軸に装着される肉抜き部2を有するドーナツ状の
弾性体3であって、この肉抜き部2には回転軸と固定す
るために金属等の剛体で形成されたリング(図示せず)
が装着される。また弾性体2の外周部には刺激用突部4
を必要に応じ設けることができる。
DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. The present invention is not limited to the following embodiments. According to FIG. 1, a kneading ball 1 according to the present invention is a donut-shaped elastic body 3 having a lightening portion 2 attached to a rotating shaft at a central portion, and the lightening portion 2 is fixed to the rotating shaft. Ring (not shown) made of a rigid body such as metal
Is attached. A stimulating projection 4 is provided on the outer periphery of the elastic body 2.
Can be provided as needed.

【0010】弾性材料としては、ウレタン発泡体が用い
られ、液状のウレタン原料を注型して加熱することによ
って得られる。一般に発泡成形方法としては、ポリオー
ル、発泡剤、触媒、鎖延長剤、顔料等を混合したプレミ
ックス液と、イソシアネート成分を含有する溶液とを混
合して注入反応させるワンショット法、もしくは、イソ
シアネートとして予め一部ポリオールで変性したプレポ
リマーを用いるプレポリマー法が挙げられる。
A urethane foam is used as the elastic material, and is obtained by casting and heating a liquid urethane raw material. In general, as a foam molding method, a one-shot method in which a premix liquid in which a polyol, a foaming agent, a catalyst, a chain extender, a pigment, etc. are mixed, and a solution containing an isocyanate component are mixed and injected and reacted, or as an isocyanate. A prepolymer method using a prepolymer partially modified with a polyol in advance may be used.

【0011】イソシアネートとしては限定されるもので
はないが、例えばトルエンジイソシアネート(TDI)
及びメチレンジイソシアネート(MDI)等が一般に用
いられる。但し、ポリオールとしては成形品が耐湿性、
耐水性に優れると共に強靭な物性とヒステリシスロスの
小さい特性を有するポリテトラメチレンエーテルグリコ
ール(PTMG)を使用することを必須とする。また、
ポリオールとしては例えばアルキレンオキサイドと共重
合させたPTMG変性体なども本技術範疇に属する。
尚、PTMGの質量平均は一般に500〜2,000程
度である。
Although the isocyanate is not limited, for example, toluene diisocyanate (TDI)
And methylene diisocyanate (MDI) are generally used. However, as a polyol, the molded product has moisture resistance,
It is essential to use polytetramethylene ether glycol (PTMG) which is excellent in water resistance and has strong physical properties and small hysteresis loss. Also,
As the polyol, for example, a modified PTMG copolymerized with an alkylene oxide also belongs to the present technical category.
In addition, the weight average of PTMG is generally about 500 to 2,000.

【0012】発泡剤は、化学的な発泡剤としては水があ
り、物理的な発泡剤としてはトリクロロフロロメタンや
ジクロルメタンといったものが用いられ、配合量の増減
によって成形品の密度が調節されると共に硬度に影響を
与える。しかし環境及び安全衛生上、水を用いる事が好
ましい。尚、発泡倍率は通常1.5〜2.5倍である。
As the foaming agent, water is used as a chemical foaming agent, and trichlorofluoromethane or dichloromethane is used as a physical foaming agent. The density of a molded article is controlled by increasing or decreasing the amount of the compounding agent. Affects hardness. However, it is preferable to use water from the viewpoint of environment and safety and health. The expansion ratio is usually 1.5 to 2.5 times.

【0013】触媒は、モノアミン類、ジアミン類、トリ
アミン類、環状アミン類、アルコールアミン類、エーテ
ルアミン類といったアミン系触媒や有機スズが一般に用
いられる。尚、ウレタン原液の泡化とゲル化のバランス
をとるよう触媒配合量を調節することが重要である。
As the catalyst, amine catalysts such as monoamines, diamines, triamines, cyclic amines, alcohol amines and ether amines and organic tins are generally used. It is important to adjust the amount of the catalyst so as to balance the foaming and gelling of the urethane stock solution.

【0014】鎖延長剤としては、一般に短鎖ポリオール
が使用され、エチレングリコール、1.4ブタンジオー
ル、トリエタノールアミン、トリメチロールプロパン等
が例示でき、その配合量により成形体の硬度調節が可能
である。また上記配合剤の他に、必要に応じて、着色
剤、整泡剤、充填材、安定剤等が添加できる。
As the chain extender, a short-chain polyol is generally used, and examples thereof include ethylene glycol, 1.4 butanediol, triethanolamine, and trimethylolpropane. The hardness of the molded article can be controlled by the amount of the compound. is there. In addition to the above-mentioned compounding agents, a coloring agent, a foam stabilizer, a filler, a stabilizer, and the like can be added as necessary.

【0015】上記の液状ウレタン原料を発泡注型する方
法としては、高圧ポンプにより150気圧前後で2液を
軽量循環させ、所定時間吐出口を開いて2液を衝突混合
させる高圧注型機を用いる方法と、低圧ポンプにより数
気圧程度で2液を軽量循環させ、所定時間吐出口を開い
てミキシングチャンバー内に2液を導き、ロータで攪拌
しつつ吐出する低圧注型機を用いる方法がある。また成
形金型としては、オープン注型、クローズド注型など限
定するものでなく、素材としては、樹脂、ZAS、アル
ミニウム、スチール等が使用可能である。
As a method for foaming and casting the above-mentioned liquid urethane raw material, a high-pressure casting machine is used in which two liquids are lightly circulated at about 150 atm by a high-pressure pump, and a discharge port is opened for a predetermined time to impinge and mix the two liquids. There is a method and a method using a low-pressure casting machine in which two liquids are lightly circulated at about several atmospheres by a low-pressure pump, a discharge port is opened for a predetermined time to guide the two liquids into a mixing chamber, and the mixture is discharged while being stirred by a rotor. Also, the molding die is not limited to open casting, closed casting, and the like, and as a material, resin, ZAS, aluminum, steel, or the like can be used.

【0016】上述の技術に従い得られた揉み玉は、ポリ
テトラメチレンエーテルグリコール由来の骨格を含んで
なるウレタン発泡弾性体によって構成されると共に、シ
ョアA硬度が30〜40度となるよう硬度が調節されて
なる。ショアA硬度が30度未満の場合は、負荷による
ひずみが大きいために実使用に耐えうることができず、
またショアA硬度が40度を超えると硬度が高くマッサ
ージ感触が良くない。
The kneading balls obtained according to the above-mentioned technique are constituted by a urethane foamed elastic body containing a skeleton derived from polytetramethylene ether glycol, and the hardness is adjusted so that the Shore A hardness becomes 30 to 40 degrees. Be done. If the Shore A hardness is less than 30 degrees, the strain due to load is large, so that it cannot withstand actual use,
When the Shore A hardness exceeds 40 degrees, the hardness is high and the massage feeling is not good.

【0017】[0017]

【実施例】実施例として、ポリテトラメチレンエーテル
グリコール100重量部、トリエチレンジアミン0.8
重量部、水0.3重量部を予め混合した溶液101.1
重量部と、変性MDI溶液483重量部とを成形型に注
入し、型温45〜50°Cにて15分間発泡成形させ
た。その後、脱型し、ショアA硬度35度の揉み玉を得
た。
EXAMPLES As examples, 100 parts by weight of polytetramethylene ether glycol, 0.8 parts of triethylenediamine were used.
101.1 parts by weight previously mixed with 0.3 parts by weight of water
Parts by weight and 483 parts by weight of the modified MDI solution were poured into a mold and foamed at a mold temperature of 45 to 50 ° C. for 15 minutes. Thereafter, the mold was removed to obtain a kneaded ball having a Shore A hardness of 35 degrees.

【0018】尚、比較例1として、ポリエーテルポリオ
ール100重量部、トリエチレンジアミン1.5重量
部、有機錫触媒0.03重量部、水0.5重量部、エチ
レングリコール6重量部を予め混合した溶液108.0
3重量部と、変性MDI溶液60.4重量部とを成形型
に注入し、型温45〜50°Cにて15分間発泡成形さ
せた。その後、脱型し、ショアA硬度40度の揉み玉を
得た。更に、弾性体にNBRゴムを用いた従来の揉み玉
(ショアA硬度45度)を比較例2として得た。
As Comparative Example 1, 100 parts by weight of polyether polyol, 1.5 parts by weight of triethylenediamine, 0.03 parts by weight of an organotin catalyst, 0.5 parts by weight of water, and 6 parts by weight of ethylene glycol were previously mixed. Solution 108.0
3 parts by weight and 60.4 parts by weight of the modified MDI solution were poured into a mold, and foamed at a mold temperature of 45 to 50 ° C. for 15 minutes. Thereafter, the mold was removed to obtain a kneaded ball having a Shore A hardness of 40 degrees. Furthermore, a conventional kneading ball (Shore A hardness: 45 degrees) using NBR rubber as the elastic body was obtained as Comparative Example 2.

【0019】上記方法により得られた各々の揉み玉をマ
ッサージ装置の実機にて60Kg荷重で1000時間稼
動させたところ、実施例は揉み玉の破損、歪み、摩耗が
なく、布へ摩耗粉が付着する事はなかった。またマッサ
ージ感触も良好であった。これに対して比較例1の揉み
玉は人力で容易に引裂き破壊され、実使用が不可能であ
った。また比較例2の揉み玉は摩耗粉が大量に発生し、
マッサージ機表皮にカーボンブラックが浮きでた。また
マッサージ感触が固く、不快であった。
When each of the kneaded balls obtained by the above method was operated for 1000 hours with a load of 60 kg using an actual machine of the massage device, in the example, there was no breakage, distortion, or abrasion of the kneaded balls, and abrasion powder adhered to the cloth. I never did. The massage feeling was also good. On the other hand, the kneading ball of Comparative Example 1 was easily torn and broken by human power, and was not practically usable. In addition, a large amount of wear powder was generated in the kneading balls of Comparative Example 2,
Carbon black was floating on the skin of the massage machine. The massage feeling was hard and unpleasant.

【0020】[0020]

【発明の効果】以上のように本発明では、特定種類の樹
脂の選択及び特定の硬度の選択により耐摩耗性に優れか
つ良好なマッサージ感触を有する揉み玉を提供できた。
As described above, according to the present invention, a kneading ball having excellent abrasion resistance and good massage feeling can be provided by selecting a specific type of resin and a specific hardness.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明に係る揉み玉の斜視図である。FIG. 1 is a perspective view of a kneading ball according to the present invention.

【符号の説明】[Explanation of symbols]

1 揉み玉 2 肉抜き部 3 弾性体 4 刺激用突部 DESCRIPTION OF SYMBOLS 1 Massage ball 2 Lightening part 3 Elastic body 4 Stimulation projection

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 マッサージ装置に用いられる揉み玉にあ
って、弾性体はショアA硬度が30〜40度のウレタン
発泡体からなり、該ウレタン発泡体はポリテトラメチレ
ンエーテルグリコール由来の骨格を含んでなることを特
徴とするマッサージ装置に用いられる揉み玉。
1. A massaging ball used in a massage device, wherein the elastic body is made of a urethane foam having a Shore A hardness of 30 to 40 degrees, and the urethane foam contains a skeleton derived from polytetramethylene ether glycol. A massage ball used for a massage device characterized by becoming.
JP2001109883A 2001-04-09 2001-04-09 Rubbing ball used for massaging apparatus Pending JP2002200133A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2001109883A JP2002200133A (en) 2001-04-09 2001-04-09 Rubbing ball used for massaging apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001109883A JP2002200133A (en) 2001-04-09 2001-04-09 Rubbing ball used for massaging apparatus

Publications (1)

Publication Number Publication Date
JP2002200133A true JP2002200133A (en) 2002-07-16

Family

ID=18961756

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2001109883A Pending JP2002200133A (en) 2001-04-09 2001-04-09 Rubbing ball used for massaging apparatus

Country Status (1)

Country Link
JP (1) JP2002200133A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006061400A (en) * 2004-08-26 2006-03-09 Osaka Gas Co Ltd Chair
KR20150119777A (en) * 2014-04-16 2015-10-26 배삼훈 Hear friction stimulation mechanism for hands

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006061400A (en) * 2004-08-26 2006-03-09 Osaka Gas Co Ltd Chair
JP4508780B2 (en) * 2004-08-26 2010-07-21 大阪瓦斯株式会社 Chair
KR20150119777A (en) * 2014-04-16 2015-10-26 배삼훈 Hear friction stimulation mechanism for hands
KR101639285B1 (en) 2014-04-16 2016-07-18 배삼훈 Hear friction stimulation mechanism for hands

Similar Documents

Publication Publication Date Title
EP2174968B1 (en) Shape formable polyurethane foam product having shape memory properties, method of using the same and cushion material to be worn on human body
US6793864B1 (en) Polyurethane material for two and three piece golf balls
JP5838154B2 (en) Polyurethane foam for seat pads
JP5588343B2 (en) Improved production of polyurethane foam balls
JP2007154148A (en) Non-solvent type polyurethane foam having fine pores, and method for manufacturing artificial leather by use for the foam
JP2011038005A (en) Manufacturing method of foamed polyurethane elastomer
JP2002525403A (en) Method for producing microporous polyurethane elastomer
CN101348557A (en) Wearing resistance enhanced pouring type urethane elastomer composition
JPH0578440A (en) Manufacture of microporous polyurethane elastomer product, and closed-cell microporous polyuethane elastomer and isocyanate-reactive composition
US3752695A (en) Coated polyurethane foam having an integral skin
CN106432687B (en) Low-density mirror surface microporous polyurethane elastomer resin and application method
JP2002200133A (en) Rubbing ball used for massaging apparatus
CN111500055B (en) Low-temperature flexible polyurethane composite shoe material and preparation method thereof
JPH04325533A (en) Molded integral skin foam
CN111777788A (en) Double-component stock solution of high-elasticity low-density polyurethane shoe material and preparation method thereof
JPH0885717A (en) Production of urethane elastomer
CN106565931A (en) Formula and preparation method for degradable slow-rebound shoe material
CN110003423A (en) Modified isocyanate performed polymer, polyurethane combined material and its preparation method and application
CN110305291A (en) A kind of forming method of polyurethane combined material and dumbbell disc
WO2005052043A1 (en) Flexible polyurethane foam for cosmetic puff and process for producing the same
WO2015187950A2 (en) Mechanically frothed gel elastomers and methods of making and using them
WO2005052057A1 (en) Method for producing flexible polyurethane foam
JP2001026630A (en) Polyurethane resin composition and production thereof
JP4307630B2 (en) Cosmetic sponge puff and method for producing the same
JPH04180914A (en) Production of polyurethane elastomer