JPH06293201A - Caster, manufacture thereof, and stand thereof - Google Patents
Caster, manufacture thereof, and stand thereofInfo
- Publication number
- JPH06293201A JPH06293201A JP8165993A JP8165993A JPH06293201A JP H06293201 A JPH06293201 A JP H06293201A JP 8165993 A JP8165993 A JP 8165993A JP 8165993 A JP8165993 A JP 8165993A JP H06293201 A JPH06293201 A JP H06293201A
- Authority
- JP
- Japan
- Prior art keywords
- caster
- ball
- mounting table
- molding
- spherical seat
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0017—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor moulding interconnected elements which are movable with respect to one another, e.g. chains or hinges
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0017—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor moulding interconnected elements which are movable with respect to one another, e.g. chains or hinges
- B29C2045/002—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor moulding interconnected elements which are movable with respect to one another, e.g. chains or hinges using shrinkage
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Automatic Assembly (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、キャスターとキャスタ
ーの製造方法とこのキャスターを備えた載置台に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a caster, a method for manufacturing the caster, and a mounting table equipped with the caster.
【０００２】[0002]
【従来の技術】近年、テレビジョン受像機などを搭載す
る載置台においては、載置台の移動を容易にするためキ
ャスターが多く利用される。2. Description of the Related Art In recent years, casters are often used in a mounting table for mounting a television receiver or the like in order to facilitate the movement of the mounting table.
【０００３】以下図面を参照しながら、従来のキャスタ
ーと載置台について図３から図５までを用いて説明す
る。A conventional caster and mounting table will be described below with reference to FIGS. 3 to 5.
【０００４】図３において１２はテレビジョン受信機な
どの積載物、１３は載置台、１４はキャスターである。In FIG. 3, reference numeral 12 is a load such as a television receiver, 13 is a mounting table, and 14 is a caster.
【０００５】以上のように構成された載置台１３とキャ
スター１４について、以下その構成を図４と図５で説明
する。With respect to the mounting table 13 and the casters 14 configured as described above, their configurations will be described below with reference to FIGS. 4 and 5.
【０００６】図４と図５に於いて載置台１３は、載置台
１３を構成する底板１５の下面四隅にキャスター１４を
所定に配設している。In the mounting table 13 shown in FIGS. 4 and 5, casters 14 are arranged at predetermined corners on the lower surface of the bottom plate 15 constituting the mounting table 13.
【０００７】キャスター１４は、キャスター本体８とロ
ーラ９Ａとローラ９Ｂとを別々に成形し、これらを回転
軸１１を介して取り付けている。In the caster 14, the caster body 8, the roller 9A and the roller 9B are separately molded, and these are mounted via the rotary shaft 11.
【０００８】又、ローラ９Ａ、９Ｂが円板形状であり支
点軸１０と回転軸１１に距離Ｃを設けて取り付けてい
る。Further, the rollers 9A and 9B are disc-shaped, and are mounted with a distance C provided between the fulcrum shaft 10 and the rotary shaft 11.
【０００９】[0009]
【発明が解決しようとする課題】しかしながら、上記の
ような構成では、４つのキャスター１４が前記支点軸１
０にそれぞれ回動可能に取り付いているためキャスター
１４の向きがバラバラであり、またローラ９Ａ、９Ｂの
内輪差により（自動車の差動歯車機構になっていな
い）、載置台１３を移動させる力に対してローラがうま
く回転せず床面に傷をつけてしまうことがある。However, in the above-mentioned structure, the four casters 14 are used for the fulcrum shaft 1.
Since the casters 14 are rotatably attached to each other, the orientations of the casters 14 are different, and due to the difference in the inner rings of the rollers 9A and 9B (not the differential gear mechanism of the automobile), the force for moving the mounting table 13 is increased. On the other hand, the roller may not rotate properly and may damage the floor surface.
【００１０】さらに、支点軸１０と回転軸１１に距離Ｃ
を設けなければならず、積載物１２を載置台１３に搭載
した場合、支点軸１０が後方へずれるのを防ぐため底板
１５をその分前に出すことが必要で、載置台１３からの
出っ張り量が「Ａ＋Ｃ」となり、デザイン上・実用上不
具合であった。Further, a distance C is set between the fulcrum shaft 10 and the rotary shaft 11.
Must be provided, and when the load 12 is mounted on the mounting table 13, the bottom plate 15 must be moved forward in order to prevent the fulcrum shaft 10 from moving backward, and the amount of protrusion from the mounting table 13 must be increased. Was "A + C", which was a design and practical problem.
【００１１】[0011]
【問題を解決するための手段】上記問題を解決するため
に本発明のキャスターは、ボールと，このボールを保持
する球面座を備えたキャスター本体とからなる構成と
し、このキャスターを底板に３箇所または４箇所取り付
けて載置台を構成してなるものである。In order to solve the above problems, the caster of the present invention comprises a ball and a caster main body having a spherical seat for holding the ball, and the caster has three places on the bottom plate. Alternatively, the mounting table is configured by attaching at four places.
【００１２】また、前記キャスターの製造方法として （１）ボールとこのボールを保持するキャスター本体と
を成形収縮率の異なる部材で構成し、すなわち前記ボー
ルの成形収縮率を前記キャスター本体の成形収縮率より
大きくし、キャスター本体を成形した後，次にこのキャ
スター本体内に保持されるボールを成型することにより
所定の隙間を形成し、成形後キャスター本体内でボール
が回転できるようにした二材質成形法（いわゆるダブル
ショット成形法） （２）ボールを保持する球面座を備えたキャスター本体
を用意し、次に前記球面座より小さな曲率半径を有する
ボールを圧入して組み立てる方法 を用いた構成としている。In addition, as a method for manufacturing the caster, (1) the ball and the caster main body holding the ball are made of members having different molding shrinkages, that is, the molding shrinkage of the ball is the molding shrinkage of the caster main body. After molding the caster body to a larger size, and then molding the balls to be held in the caster body to form a predetermined gap so that the balls can rotate inside the caster body after molding. Method (so-called double shot molding method) (2) A caster body having a spherical seat for holding the ball is prepared, and then a ball having a radius of curvature smaller than that of the spherical seat is press-fitted and assembled. .
【００１３】[0013]
【作用】本発明は上記構成によって、二材質成形法を用
いた場合はキャスター本体とローラを組み立てるといっ
た後加工が不要となる。With the above-described structure, the present invention eliminates the need for post-processing such as assembling the caster body and the roller when the two-material molding method is used.
【００１４】又、支点軸とボールの回転軸が同一であっ
てもボール形状であるため内輪差が発生しないうえ、任
意方向からの作用力にもすべてのキャスターが均一に対
応できるので床面を傷付ける事もなく小さな駆動力でよ
い。かつ、載置台を構成する底板をのばす必要もなくな
る。Further, even if the fulcrum shaft and the rotation axis of the ball are the same, there is no difference in the inner ring due to the ball shape, and all casters can even respond to the acting force from any direction, so that the floor surface A small driving force is sufficient without damaging it. Moreover, it is not necessary to extend the bottom plate that constitutes the mounting table.
【００１５】[0015]
【実地例】以下本発明の実地例におけるキャスターおよ
びキャスターの製造方法と、このキャスターを用いた載
置台を図面とともに説明する。[Practical example] A caster and a method for manufacturing the caster and a mounting table using the caster in the practical example of the present invention will be described below with reference to the drawings.
【００１６】図１は本発明のキャスター２０の正面図を
示すもので、ボール２と，このボール２を保持する球面
座１Ａを備えたキャスター本体１とからなる構成とし、
このキャスター２０を載置台６の底板７に３箇所または
４箇所取り付けて載置台６を構成してなるものである。FIG. 1 is a front view of a caster 20 of the present invention, which is composed of a ball 2 and a caster main body 1 having a spherical seat 1A for holding the ball 2,
The caster 20 is attached to the bottom plate 7 of the mounting table 6 at three or four positions to form the mounting table 6.
【００１７】また、このキャスター２０の製造方法とし
て前述のごとく （１）ボール２とこのボール２を保持するキャスター本
体１とを成形収縮率の異なる材料、すなわち前記ボール
２の成形収縮率を前記キャスター本体１の成形収縮率よ
り大きくしているので、成形後の所定時間経過後には隙
間３（クリアランス）を生じ、キャスター本体１内でボ
ール２が円滑に任意方向に回転できるようになる。Further, as a method for manufacturing the caster 20, as described above, (1) the balls 2 and the caster body 1 holding the balls 2 have different molding shrinkages, that is, the molding shrinkage of the balls 2 is the caster. Since it is set to be larger than the molding shrinkage rate of the main body 1, a gap 3 (clearance) is generated after a predetermined time has elapsed after the molding, and the ball 2 can smoothly rotate in the caster main body 1 in any direction.
【００１８】二材質成形法（ダブルショット成形）とし
ては、一つの金型を平行移動または回転移動させ、異な
る成形収縮率の樹脂部材を二種類のノズルから射出成型
するなど任意の手段を用いてよい（図示せず）。図１の
キャスター２０を構成する手段としては前記二材質成形
法の他に、ボールとキャスター本体とをそれぞれ別個に
製作し組み立てる構成としてもよい。すなわち （２）ボールを保持する球面座を備えたキャスター本体
を用意し、次に前記球面座より小さな曲率半径を有する
ボールを圧入して組み立てる方法を用いてもよい（図示
せず）。この場合、キャスター本体は樹脂部材を射出成
型したり、黄銅などの金属部材を鋳造したり、またはＡ
ＬやＺｎなどをダイキャストなどの手段で構成してな
る。ボールは金属または樹脂部材からなり、キャスター
本体への圧入に際しては球面座の開口部分が所定に弾性
変形して挿入される。As the two-material molding method (double shot molding), any means such as parallel movement or rotation movement of one mold and injection molding of resin members having different molding shrinkage rates from two kinds of nozzles is used. Good (not shown). As means for forming the caster 20 of FIG. 1, in addition to the two-material molding method, the ball and the caster body may be separately manufactured and assembled. That is, (2) a method may be used in which a caster body having a spherical seat for holding the ball is prepared, and then a ball having a smaller radius of curvature than the spherical seat is press-fitted and assembled (not shown). In this case, the caster body is formed by injection molding a resin member, casting a metal member such as brass, or
L, Zn, etc. are formed by means such as die casting. The ball is made of a metal or a resin member, and when press-fitted into the caster body, the opening of the spherical seat is elastically deformed and inserted.
【００１９】上記構成のキャスターにおいて、キャスタ
ー本体１の開口寸法４をボールの直径５より小さく設定
しておくことにより、キャスター本体１からボール２が
抜け落ちる事もない。In the caster of the above construction, the ball 2 does not fall out of the caster body 1 by setting the opening size 4 of the caster body 1 smaller than the diameter 5 of the ball.
【００２０】図２に於いて、載置台６の底板７に取りつ
けたキャスター２０は支点軸と回転軸を、同一としてい
るので、底板を図３のように伸ばさなくてもよい。In FIG. 2, the caster 20 attached to the bottom plate 7 of the mounting table 6 has the same fulcrum shaft and rotation axis, so that the bottom plate need not be extended as shown in FIG.
【００２１】[0021]
【発明の効果】以上のように本発明は、小さな作用力で
載置台などの移動を容易にし床面への傷を防止し、二材
質成型により組み立ての手間を省き安価なキャスターを
提供できる。また、デザイン性・実用性の向上に寄与す
ることができる。As described above, according to the present invention, it is possible to provide an inexpensive caster that facilitates the movement of the mounting table or the like with a small acting force to prevent the floor surface from being scratched, and saves the assembly work by molding two materials. In addition, it is possible to contribute to improvement in designability and practicality.
【図１】本発明の一実施例に於けるキャスターの断面図FIG. 1 is a sectional view of a caster according to an embodiment of the present invention.
【図２】本発明の一実施例に於ける載置台の要部正面図FIG. 2 is a front view of a main part of a mounting table according to an embodiment of the present invention.
【図３】従来のキャスターを利用した載置台の要部正面
図FIG. 3 is a front view of a main part of a mounting table using a conventional caster.
【図４】従来のキャスターの要部断面図FIG. 4 is a sectional view of a main part of a conventional caster
【図５】従来のキャスターの要部断面図FIG. 5 is a sectional view of a main part of a conventional caster
１ キャスター本体 １Ａ 球面座 ２ ボール ３ 隙間 ４ キャスター本体の開口寸法 ５ ボールの径 ６ 載置台 ７ 載置台の底板 ２０ キャスター １０ 支点軸 1 Caster body 1A Spherical seat 2 Ball 3 Gap 4 Caster body opening size 5 Ball diameter 6 Mounting table 7 Bottom plate of mounting table 20 Caster 10 Support shaft
Claims (5)
を備えたキャスター本体とからなることを特徴とするキ
ャスター。1. A caster comprising a ball and a caster body having a spherical seat for holding the ball.
ー本体の成形収縮率より大きくしたことを特徴とする請
求項１記載のキャスター。2. The caster according to claim 1, wherein a molding shrinkage rate of the ball is made larger than a molding shrinkage rate of the caster body.
キャスター本体内に保持されるボールを成型するように
した二材質成形法によるキャスターの製造方法。3. A method of manufacturing a caster by a two-material molding method, which comprises molding a caster body and then molding balls held in the caster body.
ター本体を用意し、次に前記球面座より小さな曲率半径
を有するボールを圧入して組み立てたことを特徴とする
キャスターの製造方法。4. A method of manufacturing a caster, characterized in that a caster body having a spherical seat for holding a ball is prepared, and then a ball having a radius of curvature smaller than that of the spherical seat is press-fitted and assembled.
を特徴とする載置台。5. A mounting table comprising the caster according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8165993A JPH06293201A (en) | 1993-04-08 | 1993-04-08 | Caster, manufacture thereof, and stand thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8165993A JPH06293201A (en) | 1993-04-08 | 1993-04-08 | Caster, manufacture thereof, and stand thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06293201A true JPH06293201A (en) | 1994-10-21 |
Family
ID=13752461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8165993A Pending JPH06293201A (en) | 1993-04-08 | 1993-04-08 | Caster, manufacture thereof, and stand thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06293201A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102069350A (en) * | 2010-12-17 | 2011-05-25 | 二重集团（德阳）重型装备股份有限公司 | Method for processing end faces of ball valve, and special mold thereof |
| US20130341880A1 (en) * | 2012-06-26 | 2013-12-26 | Andres Bernal | Castor assembly for a modular dolly |
| CN104801966A (en) * | 2015-04-27 | 2015-07-29 | 中山市信立富机械科技有限公司 | Ball-shaped wheel positioning mechanism |
| US9566993B2 (en) | 2012-07-23 | 2017-02-14 | Luca Buttazzoni | Self-contained dolly assembly |
| CN108620870A (en) * | 2018-05-28 | 2018-10-09 | 浙江群悦实业有限公司 | Universal wheel for luggage automatically assembles equipment |
| CN109130214A (en) * | 2018-08-30 | 2019-01-04 | 格力电器（武汉）有限公司 | Device for pressing cylindrical cabinet air conditioner roller |
-
1993
- 1993-04-08 JP JP8165993A patent/JPH06293201A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102069350A (en) * | 2010-12-17 | 2011-05-25 | 二重集团（德阳）重型装备股份有限公司 | Method for processing end faces of ball valve, and special mold thereof |
| US20130341880A1 (en) * | 2012-06-26 | 2013-12-26 | Andres Bernal | Castor assembly for a modular dolly |
| US8850656B2 (en) * | 2012-06-26 | 2014-10-07 | Luca Buttazzoni | Castor assembly for a modular dolly |
| US9566993B2 (en) | 2012-07-23 | 2017-02-14 | Luca Buttazzoni | Self-contained dolly assembly |
| CN104801966A (en) * | 2015-04-27 | 2015-07-29 | 中山市信立富机械科技有限公司 | Ball-shaped wheel positioning mechanism |
| CN108620870A (en) * | 2018-05-28 | 2018-10-09 | 浙江群悦实业有限公司 | Universal wheel for luggage automatically assembles equipment |
| CN108620870B (en) * | 2018-05-28 | 2023-12-29 | 浙江群悦实业有限公司 | Full-automatic assembling equipment for universal wheels of bags and suitcases |
| CN109130214A (en) * | 2018-08-30 | 2019-01-04 | 格力电器（武汉）有限公司 | Device for pressing cylindrical cabinet air conditioner roller |
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