JP5046282B2 - Door-to-door - Google Patents

Door-to-door Download PDF

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JP5046282B2
JP5046282B2 JP2007174892A JP2007174892A JP5046282B2 JP 5046282 B2 JP5046282 B2 JP 5046282B2 JP 2007174892 A JP2007174892 A JP 2007174892A JP 2007174892 A JP2007174892 A JP 2007174892A JP 5046282 B2 JP5046282 B2 JP 5046282B2
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outer peripheral
contact member
rail
peripheral surface
rail contact
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JP2009013623A (en
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裕 越前
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YKK Corp
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    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
    • E05D15/00—Suspension arrangements for wings
    • E05D15/06—Suspension arrangements for wings for wings sliding horizontally more or less in their own plane
    • E05D15/0621—Details, e.g. suspension or supporting guides
    • E05D15/0626—Details, e.g. suspension or supporting guides for wings suspended at the top
    • E05D15/063—Details, e.g. suspension or supporting guides for wings suspended at the top on wheels with fixed axis
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2201/00—Constructional elements; Accessories therefor
    • E05Y2201/60—Suspension or transmission members; Accessories therefor
    • E05Y2201/622—Suspension or transmission members elements
    • E05Y2201/628—Bearings
    • E05Y2201/63—Races
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2201/00—Constructional elements; Accessories therefor
    • E05Y2201/60—Suspension or transmission members; Accessories therefor
    • E05Y2201/622—Suspension or transmission members elements
    • E05Y2201/628—Bearings
    • E05Y2201/636—Universal or ball joints
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2201/00—Constructional elements; Accessories therefor
    • E05Y2201/60—Suspension or transmission members; Accessories therefor
    • E05Y2201/622—Suspension or transmission members elements
    • E05Y2201/688—Rollers
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2800/00—Details, accessories and auxiliary operations not otherwise provided for
    • E05Y2800/40—Physical or chemical protection
    • E05Y2800/422—Physical or chemical protection against vibration or noise
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/10—Application of doors, windows, wings or fittings thereof for buildings or parts thereof
    • E05Y2900/13—Type of wing
    • E05Y2900/132—Doors

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Support Devices For Sliding Doors (AREA)

Description

本発明は、自動ドアの扉を吊り下げしてレール上を走行する戸車などとして用いる戸車に関する。   The present invention relates to a door wheel used as a door wheel or the like that travels on rails by hanging an automatic door.

自動ドアとしては、扉の上部に戸車を取付け、この戸車を無目に取付けたレールに走行可能に接触し、電動モータを利用して扉を開き位置と閉じ位置に移動するものが知られている。
前述のように、レールに走行可能に接触した戸車は、レール上を回転しながら走行するが、その際にレールとの接触音が発生する問題がある。
このために、戸車におけるレールと接触する外周側部分を柔らかい樹脂とすることで、レールとの接触音を低減する戸車が提案されている。 As an automatic door, there is known an automatic door mounted on the top of the door, in contact with the rail on which this doorless wheel is mounted so that it can travel, and using an electric motor to move the door to an open position and a closed position. Yes.
As described above, the door wheel that is in contact with the rail so as to be able to travel travels while rotating on the rail, but there is a problem in that a contact sound with the rail is generated.
For this reason, the door pulley which reduces the contact sound with a rail is proposed by making the outer peripheral side part which contacts the rail in a door roller into soft resin.

例えば、特許文献１には、金属製車輪の外周部に形成された円環状の溝に、ウレタン樹脂を射出成形法で注入してゴム製車輪とした戸車が開示されている。
この戸車であれば、ゴム製車輪がレールに走行可能に接触するので、レールとの接触音が低減する。 For example, Patent Document 1 discloses a door wheel in which a urethane wheel is injected by an injection molding method into an annular groove formed on an outer peripheral portion of a metal wheel to form a rubber wheel.
If it is this door wheel, since a rubber-made wheel contacts a rail so that driving | running | working is possible, a contact sound with a rail will reduce.

また、特許文献２には、金属製ホイールの外周溝に、接着材を塗布した後にポリウレタン樹脂を射出成形法で注入して硬化することで合成樹脂の外周部分とした戸車（輪状物）が開示されている。
この戸車であれば、合成樹脂の外周部分がレールに走行可能に接触するので、レールとの接触音が低減する。 Further, Patent Document 2 discloses a door wheel (ring-shaped material) that is made of an outer peripheral portion of a synthetic resin by injecting a polyurethane resin into an outer peripheral groove of a metal wheel and then curing it by injection molding. Has been.
If it is this door wheel, since the outer peripheral part of a synthetic resin contacts a rail so that driving | running | working is possible, a contact sound with a rail will reduce.

特開平４−３０９６８２号公報JP-A-4-309682 特開平５−１０４５６６号公報Japanese Patent Laid-Open No. 5-104566

前述した従来の戸車においては、戸車のレールに接触する外周側部分がゴム製、合成樹脂であるから、その外周側部分におけるレールに接触する箇所は、その戸車を取付けた扉の荷重等によって凹み変形し、その凹み変形部は戸車の回転によって周方向に順次移動する。
前述の特許文献１に開示された戸車においては、金属製車輪とゴム製車輪とが密着されていないので、ゴム製車輪が金属製車輪の溝内において扉の荷重等に見合うだけ凹み変形するから、その凹み変形が過度となり、ゴム製車輪の内部、または外部にひび割れが発生してしまうことがある。
このように、レールに接触するゴム製車輪にひび割れが発生すると、以後の回転時に振動又は音を発生する原因となる。 In the conventional door car described above, the outer peripheral side portion that contacts the rail of the door wheel is made of rubber or synthetic resin. Therefore, the portion of the outer peripheral side portion that contacts the rail is recessed due to the load of the door to which the door wheel is attached. The deformed portion is sequentially moved in the circumferential direction by the rotation of the door pulley.
In the door wheel disclosed in the above-mentioned Patent Document 1, the metal wheel and the rubber wheel are not in close contact with each other, so the rubber wheel is deformed in a groove of the metal wheel so as to correspond to the load of the door or the like. The dent deformation becomes excessive, and cracks may occur inside or outside the rubber wheel.
Thus, if a crack occurs in the rubber wheel that contacts the rail, it may cause vibration or sound during subsequent rotation.

前述の特許文献２に開示された戸車においては、金属製ホイールと合成樹脂の外周部分とが接着剤で接着されているので、両者が密着しており、扉の荷重等による外周部分の凹み変形を低減してレールに接触する外周部分にひび割れの発生を防止することが可能である。
しかし、接着剤を全面に亘って均一に塗布することは困難で、接着剤の塗布にムラが生じることがある。このように、接着剤の塗布にムラがあると、金属製ホイールと外周部分との一部分の密着が完全でなくなり、その部分からひび割れを起こしてしまうことがあるので、レールに接触する外周部分にひび割れが発生することを確実に防止できない。
また、接着剤を塗布する工程が必要であるから、製造工程が複雑で、戸車の製造が面倒で時間がかかることになる。 In the door wheel disclosed in Patent Document 2 described above, the metal wheel and the outer peripheral portion of the synthetic resin are bonded with an adhesive, so that they are in close contact with each other, and the dent deformation of the outer peripheral portion due to the load of the door, etc. It is possible to prevent the occurrence of cracks in the outer peripheral portion in contact with the rail.
However, it is difficult to uniformly apply the adhesive over the entire surface, and unevenness may occur in the application of the adhesive. In this way, if there is unevenness in the application of the adhesive, the metal wheel and the outer peripheral part may not be completely adhered, and cracks may occur from that part. It cannot be surely prevented from cracking.
Moreover, since the process of apply | coating an adhesive agent is required, a manufacturing process is complicated, and manufacture of a doorwheel will be troublesome and will take time.

本発明の目的は、レールとの接触音を低減できると共に、レールと接触する部分にひび割れが発生することを確実に防止でき、しかも簡単に製造できるようにした戸車を提供することである。   An object of the present invention is to provide a door wheel that can reduce contact noise with a rail, reliably prevent a crack from occurring in a portion that contacts the rail, and can be easily manufactured.

本発明は、軸穴１０ｂを有する底壁部１１と、この底壁部１１の軸方向両側に一体に設けられた一対の鍔部１２，１２とで外周溝１０ａを形成した金属製の本体１０と、
前記本体１０の外周溝１０ａ内に成形され、外周面２０ａと前記底壁部１１の外周面１１ａに接した内周面２０ｂと、前記一対の鍔部１２の内側面１２ａに接した一対の外側面２０ｃを有した略筒形状で樹脂製のレール接触部材２０とを備え、
前記本体１０の底壁部１１の外周面１１ａに、周方向に連続している凹部１３と周方向に連続している突条１４を形成して軸方向係止部とし、
前記レール接触部材２０の内周面２０ｂに、前記凹部１３、突条１４に嵌まり合う周方向に連続している突条２１、凹部２２を形成して軸方向係止受部とし、
前記本体１０の一対の鍔部１２に、孔1６を周方向に間隔を置いて複数形成することで周方向係止部とし、
前記レール接触部材２０の一対の外側面２０ｃに、前記孔1６に嵌まり合う突起２４を設けることで周方向係止受部としたことを特徴とする戸車である。 In the present invention, a metal main body 10 in which an outer peripheral groove 10a is formed by a bottom wall portion 11 having a shaft hole 10b and a pair of flange portions 12 and 12 provided integrally on both sides in the axial direction of the bottom wall portion 11. When,
A pair of outer surfaces formed in the outer peripheral groove 10a of the main body 10 and in contact with the outer peripheral surface 20a, the inner peripheral surface 20b in contact with the outer peripheral surface 11a of the bottom wall portion 11, and the inner side surface 12a of the pair of flange portions 12. A rail contact member 20 made of resin having a substantially cylindrical shape with side surfaces 20c,
On the outer peripheral surface 11a of the bottom wall portion 11 of the main body 10, a concave portion 13 continuous in the circumferential direction and a ridge 14 continuous in the circumferential direction are formed as an axial locking portion ,
On the inner peripheral surface 20b of the rail contact member 20, the protrusions 21 and recesses 22 that are continuous in the circumferential direction that fit into the recesses 13 and the protrusions 14 are formed to form an axial locking receiving portion .
A plurality of holes 16 are formed in the pair of flanges 12 of the main body 10 at intervals in the circumferential direction to form a circumferential locking portion .
A pair of outer surfaces 20c of the rail contact members 20, a door roller, characterized in that the circumferential locking receiving portion by providing a projection 24 which mate with the hole 16.

本発明においては、レール接触部材２０の外周面２０ａは、鍔部１２側の肉厚が、軸方向中央の肉厚よりも厚くなるように円弧状に凹んだ凹部２０ａ´と、この凹部２０ａ´と鍔部１２の内側面１２ａとの間に平端部２０ａ″を備えたものにできる。 In the present invention, the outer peripheral surface 20a of the rail contact member 20 has a recess 20a ′ that is recessed in an arc shape so that the thickness on the flange 12 side is thicker than the thickness at the center in the axial direction, and the recess 20a ′. And an inner side surface 12a of the flange portion 12 can be provided with a flat end portion 20a ″.

このようにすれば、レール接触部材２０の外周面２０ａは円弧形状に凹んで形成され、鍔部１２側の肉厚が軸方向中央の肉厚よりも厚いから、レール接触部材２０が形状として安定した塊状とでき、本体１０の鍔部１２の周方向係止部１２ｂに係止した状態を維持し易くなる。また、鍔部１２の周方向係止部１２ｂに係止する位置をなるべく底壁部１１に接近させることができる。
また、レール接触部材２０の外周面２０ａは、鍔部１２側に平端部２０ａ″を備えているから、鍔部１２側の加工が行いやすくなり、かつレール接触部材２０の鍔部１２側での形状を安定して保つことができる。 In this way, the outer peripheral surface 20a of the rail contact member 20 is formed to be recessed in an arc shape, and the thickness on the flange 12 side is thicker than the thickness in the axial center, so that the rail contact member 20 is stable in shape. It becomes easy to maintain the state latched by the circumferential direction latching | locking part 12b of the collar part 12 of the main body 10. Moreover, the position latched by the circumferential direction latching | locking part 12b of the collar part 12 can be made to approach the bottom wall part 11 as much as possible.
Moreover, since the outer peripheral surface 20a of the rail contact member 20 is provided with the flat end portion 20a ″ on the flange portion 12 side, it is easy to process the flange portion 12 side, and the rail contact member 20 on the flange portion 12 side. The shape can be kept stable.

本発明によれば、樹脂製のレール接触部材２０がレールに接触しながら回転するので、レールとの接触音を低減できる。
また、本体１０に対してレール接触部材２０が周方向及び軸方向に変位できないから、レール接触部材２０の荷重による変形が抑制され、過度の変形が防止されるので、ひび割れが発生することを確実に防止できる。
また、底壁部１１と一対の鍔部１２との間に樹脂を注入してレール接触部材２０が成形するので、そのレール接触部材２０の形態を安定させることができると共に、周方向係止部と周方向係止受部及び軸方向係止部と軸方向係止受部がしっかりと係止するから、戸車を簡単に製造できる。
また、本体１０の一対の鍔部１２に、孔1６を周方向に間隔を置いて複数形成することで周方向係止部とし、レール接触部材２０の一対の外側面２０ｂに、前記孔1６に嵌まり合う突起２４を設けることで周方向係止受部としたので、本体１０の外周溝１０ａに樹脂を注入してレール接触部材２０を成形する際に、その樹脂の一部が孔１６に入り込んで突起２４を形成するので、樹脂を注入してレール接触部材２０を成形することによって、そのレール接触部材２０が本体１０に対して周方向に変位しないようにできる。
また、本体１０の底壁部１１の外周面１１ａに周方向に連続している凹部１３と周方向に連続している突条１４を形成して軸方向係止部とし、レール接触部材２０の内周面２０ｂに、前記凹部１３、突条１４に嵌まり合う周方向に連続している突条２１、凹部２２を形成して軸方向係止受部としたので、各凹部１３，２２と各突条１４，２１がそれぞれ嵌まり合うことで、レール接触部材２０が本体１０に対して軸方向に変位しないようにできる。
また、各凹部１３，２２、各突条１４，２１は周方向にそれぞれ連続しているので、周方向（回転方向）に段差がなく、レール接触部材２０がレールに接触しながら回転する時に音が発生しにくくなる。
According to the present invention, since the resin rail contact member 20 rotates while contacting the rail, the contact noise with the rail can be reduced.
Further, since the rail contact member 20 cannot be displaced in the circumferential direction and the axial direction with respect to the main body 10, deformation due to the load of the rail contact member 20 is suppressed and excessive deformation is prevented, so that it is ensured that cracking occurs. Can be prevented.
In addition, since the rail contact member 20 is molded by injecting resin between the bottom wall portion 11 and the pair of flange portions 12, the shape of the rail contact member 20 can be stabilized, and the circumferential locking portion Since the circumferential locking receiving portion and the axial locking portion and the axial locking receiving portion are firmly locked, the door can be easily manufactured.
Further, a plurality of holes 16 are formed in the pair of flange portions 12 of the main body 10 at intervals in the circumferential direction to form a circumferential locking portion, and a pair of outer side surfaces 20b of the rail contact member 20 are formed on the holes 16. Since the circumferential engagement receiving portion is provided by providing the fitting protrusions 24, when the resin is injected into the outer peripheral groove 10a of the main body 10 and the rail contact member 20 is formed, a part of the resin is formed in the hole 16. Since the projection 24 is formed by entering, the rail contact member 20 can be prevented from being displaced in the circumferential direction with respect to the main body 10 by molding the rail contact member 20 by injecting resin.
Further, a concave portion 13 that is continuous in the circumferential direction and a ridge 14 that is continuous in the circumferential direction are formed on the outer peripheral surface 11 a of the bottom wall portion 11 of the main body 10 to form an axial locking portion, and the rail contact member 20 Since the inner circumferential surface 20b is formed with the protrusions 21 and the recesses 22 that are continuous in the circumferential direction that fit into the recesses 13 and the protrusions 14 to form the axial locking receiving portions, By fitting the protrusions 14 and 21, the rail contact member 20 can be prevented from being displaced in the axial direction with respect to the main body 10.
Moreover, since each recessed part 13 and 22 and each protrusion 14 and 21 are each continuing in the circumferential direction, there is no level | step difference in the circumferential direction (rotation direction), and sound is heard when the rail contact member 20 rotates while contacting a rail. Is less likely to occur.

図１は自動ドアの扉取付部の説明図で、扉１に連結具２が固着してあり、その連結具２に軸３がボルト４で取付けてある。
この軸３に戸車５が軸受６を介在して回転自在に取付けられ、その戸車５が図示しない無目などに設けたレール７に走行可能に接触している。
そして、図示しない電動モータを駆動することで扉１が開き位置と閉じ位置に移動するようにしてある。 FIG. 1 is an explanatory view of a door mounting portion of an automatic door. A connector 2 is fixed to the door 1, and a shaft 3 is attached to the connector 2 with a bolt 4.
A door wheel 5 is rotatably attached to the shaft 3 with a bearing 6 interposed therebetween, and the door wheel 5 is in contact with a rail 7 provided in an unillustrated manner so as to be able to run.
The door 1 is moved to an open position and a closed position by driving an electric motor (not shown).

前記戸車５は、金属製の本体１０と、この本体１０の外周溝１０ａに成形した樹脂製のレール接触部材２０を備えている。
前記本体１０の軸穴１０ｂが軸受６を介在して軸３に回転自在に取付けられる。前記レール接触部材２０は本体１０よりも柔らかく、その外周面２０ａがレール７に接触している。
これによって、レール７との接触音を低減できるようにしてある。 The door wheel 5 includes a metal main body 10 and a resin rail contact member 20 formed in an outer peripheral groove 10 a of the main body 10.
A shaft hole 10b of the main body 10 is rotatably attached to the shaft 3 with a bearing 6 interposed therebetween. The rail contact member 20 is softer than the main body 10, and the outer peripheral surface 20 a is in contact with the rail 7.
Thereby, the contact sound with the rail 7 can be reduced.

次に、各部の具体形状を図２〜図５に基づいて説明する。なお、前記軸穴１０ｂの中心軸の方向を軸方向とし、軸３を中心に回転する方向を周方向として説明する。
前記戸車５の本体１０は、前記軸穴１０ｂを囲む底壁部１１と、この底壁部１１の軸方向両側から外周に向けて張り出した一対の鍔部１２を備え、この一対の鍔部１２が対向する側を内側面１２ａとし、この一対の鍔部１２の内側面１２ａと前記底壁部１１とが略直交して矩形状を呈するようにして、この一対の鍔部１２と前記底壁部１１とでレール接触部材２０が成形可能な前述の外周溝１０ａを形成している。
前記底壁部１１は円筒形状で、その内周面が前記軸穴１０ｂであると共に、内周面の反対面である外周面１１ａが外周溝１０ａの底面であり、レール接触部材２０が成形された際に、レール接触部材２０と対面する面である。 Next, the specific shape of each part is demonstrated based on FIGS. In the following description, the direction of the central axis of the shaft hole 10b is the axial direction, and the direction of rotation about the shaft 3 is the circumferential direction.
The body 10 of the door pulley 5 includes a bottom wall portion 11 surrounding the shaft hole 10b and a pair of flange portions 12 projecting from both sides in the axial direction of the bottom wall portion 11 toward the outer periphery. The side surfaces facing each other are defined as an inner surface 12a, and the inner surface 12a of the pair of flange portions 12 and the bottom wall portion 11 are substantially orthogonal to each other to form a rectangular shape. The outer peripheral groove 10a in which the rail contact member 20 can be formed is formed with the portion 11.
The bottom wall portion 11 has a cylindrical shape, the inner peripheral surface thereof is the shaft hole 10b, the outer peripheral surface 11a opposite to the inner peripheral surface is the bottom surface of the outer peripheral groove 10a, and the rail contact member 20 is formed. It is a surface which faces the rail contact member 20 when it hits.

前記底壁部１１の外周面１１ａに、前記レール接触部材２０が係止して底壁部１１に対して軸方向に変位（移動）しないように支持する軸方向係止部１１ｂが形成してある。
例えば、周方向に連続した環状の凹部１３と周方向に連続した環状の突条１４が軸方向に間隔を置いて複数形成してある。
この軸方向係止部１１ｂは前述の凹部１３のみ、又は突条１４のみでも良い。
要するに、軸方向係止部１１ｂは、軸方向とほぼ直交する方向に向かう係止部１５を有する形状とすれば良く、その軸方向係止部１１ｂは１つでも良いし、複数であっても良い。
前記係止部１５は、凹部１３または突条１４の端縁である。すなわち、凹部１３の場合は、凹部１３の底面（底壁部１１の肉厚が薄い部分）から、底壁部１１の肉厚が厚い部分となる境界部である。突条１４の場合は、突条１４の頂面（底壁部１１の肉厚が厚い部分）から、底壁部１１の肉厚が薄い部分となる境界部である。 An axial locking portion 11b is formed on the outer peripheral surface 11a of the bottom wall portion 11 to support the rail contact member 20 so as not to be displaced (moved) in the axial direction with respect to the bottom wall portion 11. is there.
For example, a plurality of annular recesses 13 that are continuous in the circumferential direction and a plurality of annular protrusions 14 that are continuous in the circumferential direction are formed at intervals in the axial direction.
This axial direction locking part 11b may be only the above-mentioned recessed part 13 or only the protrusion 14.
In short, the axial direction locking part 11b may have a shape having the locking part 15 that extends in a direction substantially orthogonal to the axial direction, and there may be one or more axial direction locking parts 11b. good.
The locking portion 15 is an edge of the recess 13 or the protrusion 14. That is, in the case of the recess 13, it is a boundary portion from the bottom surface of the recess 13 (the portion where the thickness of the bottom wall portion 11 is thin) to the portion where the thickness of the bottom wall portion 11 is thick. In the case of the protrusion 14, it is a boundary part from the top surface of the protrusion 14 (part where the thickness of the bottom wall part 11 is thick) to the part where the thickness of the bottom wall part 11 is thin.

図３に示すように、凹部１３と突条１４とを形成した場合には、凹部１３の底面は突条１４でいう底壁部１１の肉厚が薄い部分であり、凹部１３の肉厚が厚い部分は突条１４でいう頂面である。
凹部１３は２つ以上あることが好ましく、突条１４は１つ以上あることが好ましく、図３には両鍔部１２の間に、３つの突条１４と４つの凹部１３とが形成される例を表している。
詳細に述べると、本体１０の軸方向中央上に突条１４を形成し、かつ軸方向中央と鍔部１２の内側面１２ａとの間に突条１４を形成し、その両側に凹部１３が形成され、軸方向中央に対称に形成される。 As shown in FIG. 3, when the concave portion 13 and the protrusion 14 are formed, the bottom surface of the concave portion 13 is a portion where the thickness of the bottom wall portion 11 referred to as the protrusion 14 is thin, and the thickness of the concave portion 13 is The thick part is the top surface referred to as the ridge 14.
It is preferable that there are two or more recesses 13, and it is preferable that there are one or more protrusions 14. In FIG. 3, three protrusions 14 and four recesses 13 are formed between both flanges 12. An example is shown.
More specifically, the protrusion 14 is formed on the axial center of the main body 10, and the protrusion 14 is formed between the axial center and the inner side surface 12 a of the flange 12, and the recesses 13 are formed on both sides thereof. And formed symmetrically in the axial center.

前記一対の鍔部１２の内側面１２ａには、前記レール接触部材２０が鍔部１２に対して周方向に変位（移動）しないように支持する周方向係止部１２ｂが、周方向に間隔を置いて複数形成してある。
例えば、孔１６が周方向に間隔を置いて複数形成してある。この孔６は鍔部１２の内外を貫通して形成され、３０度ごとに１２個設けられている。
この周方向係止部１２ｂは、凹部又は凸部を周方向に間隔を置いて複数形成したものでも良いし、図５に示すようにリブ状突部１７を周方向に間隔を置いて放射状に複数設けたものでも良い。また、孔１６は真円形状に限らず、楕円形や四角形でもよい。
要するに、周方向係止部１２ｂは凹凸形状であれば良い。
前記周方向係止部１２ｂは、回転方向の円周上で、かつその円周の接線に直交する線上で、レール接触部材２０の一部と係止するようになっている。これにより、回転時にレール接触部材２０が回転方向に移動することを阻止できる。 On the inner side surfaces 12a of the pair of flanges 12, circumferential locking portions 12b that support the rail contact member 20 so as not to be displaced (moved) in the circumferential direction with respect to the flange 12 are spaced apart in the circumferential direction. A plurality are formed.
For example, a plurality of holes 16 are formed at intervals in the circumferential direction. The holes 6 are formed so as to penetrate the inside and outside of the flange portion 12 and are provided 12 every 30 degrees.
The circumferential locking portion 12b may be formed by forming a plurality of concave portions or convex portions at intervals in the circumferential direction, and the rib-like protrusions 17 are radially spaced at intervals in the circumferential direction as shown in FIG. A plurality of them may be provided. Further, the hole 16 is not limited to a perfect circle, and may be an ellipse or a rectangle.
In short, the circumferential locking portion 12b may be an uneven shape.
The circumferential locking portion 12b is locked with a part of the rail contact member 20 on the circumference in the rotation direction and on a line orthogonal to the tangent line of the circumference. Thereby, it can prevent that the rail contact member 20 moves to a rotation direction at the time of rotation.

前記孔１６や凹部、凸部、リブ状突部１７などは、底壁部１１に近いほうに形成することが好ましく、底壁部１１に形成することが一番好ましい。
しかし、底壁部１１に形成すると、その部分が音を発生させる原因となる。つまり、底壁部１１に孔１６、凹部、凸部、リング状突部１７などを形成すると、底壁部１１の厚さが周方向に亘って均一にならずに厚い部分と薄い部分が生じるので、レール接触部材２０がレール７に接触した時の凹み変形量が周方向で不均一となるから、レール７に接触しながら回転することで音が発生することになる。 The holes 16, the concave portions, the convex portions, the rib-shaped protrusions 17 and the like are preferably formed closer to the bottom wall portion 11, and most preferably formed on the bottom wall portion 11.
However, if it forms in the bottom wall part 11, that part will cause a sound to be generated. That is, when the hole 16, concave portion, convex portion, ring-shaped protrusion 17 and the like are formed in the bottom wall portion 11, the thickness of the bottom wall portion 11 is not uniform in the circumferential direction, and a thick portion and a thin portion are generated. Therefore, since the amount of dent deformation when the rail contact member 20 comes into contact with the rail 7 becomes uneven in the circumferential direction, a sound is generated by rotating while contacting the rail 7.

また、前述の孔１６、凹部、凸部、リブ状突部１７などはレール接触部材２０の断面積が大きいところに対向した位置に形成することが好ましい。
例えば、前記レール接触部材２０の外周面２０ａは軸方向に向けて円弧形状で凹んでいるので、そのもっとも低い部分（軸方向中央部）よりも内側（軸穴１０ｂ）寄りが断面積が大きいので、その外周面２０ａの最も低い部分よりも内側寄りと対向した径方向の位置に形成することが好ましい。 Moreover, it is preferable to form the above-mentioned hole 16, a recessed part, a convex part, the rib-shaped protrusion 17, etc. in the position facing the place where the cross-sectional area of the rail contact member 20 is large.
For example, since the outer peripheral surface 20a of the rail contact member 20 is recessed in an arc shape in the axial direction, the cross-sectional area is larger on the inner side (axial hole 10b) than the lowest portion (axial central portion). It is preferable that the outer peripheral surface 20a be formed at a radial position facing the inner side of the lowest portion.

前記軸受６は軸穴１０ｂ内に挿入され、その軸方向一端部が軸穴１０ｂの軸方向一端寄りの段部１０ｃに当接し、底壁部１１の軸方向他端部における周方向の複数個所をカシメして軸受６の軸方向他端部に押し付けて抜け止めしてある。   The bearing 6 is inserted into the shaft hole 10b, one end in the axial direction abuts on the step portion 10c near the one end in the axial direction of the shaft hole 10b, and a plurality of circumferential positions at the other end in the axial direction of the bottom wall portion 11 are provided. Is pressed against the other axial end of the bearing 6 to prevent it from coming off.

前記本体１０はアルミダイキャスト製であるから、前述のような複雑形状とすることが容易である。
なお、本体１０はアルミダイキャスト製に限ることはない。 Since the main body 10 is made of aluminum die-casting, it is easy to have a complicated shape as described above.
The main body 10 is not limited to aluminum die casting.

前記レール接触部材２０は、外周面２０ａと内周面２０ｂと軸方向両側の一対の外側面２０ｃを有した略筒形状である。前記内周面２０ｂが底壁部１１の外周面１１ａに接して成形され、外側面２０ｃが鍔部１２の内側面１２ａに接して成形されている。外周面２０ａがレール７と接触する。
このレール接触部材２０は、本体１０の外周溝１０ａに樹脂、例えば熱可塑性のウレタン樹脂を注入して成形される、つまり、射出成形で成形される。
例えば、図３に仮想線で示すように本体１０を成形型３０にセットし、外周溝１０ａと成形型３０とで環状空間部３１を形成し、その環状空間部３１にウレタン樹脂を注入して環状形状の樹脂成形体とし、その外周面を軸方向中央に向かって円弧形状に凹んだ形状に凹部２０ａ´を加工してレール接触部材とする。
この環状空間部３１において、底壁部１１の外周面１１ａによってレール接触部材２０の内周面２０ｂが形成され、一対の鍔部１２の内側面１２ａよってレール接触部材２０の外側面２０ｃが形成され、レール接触部材の外周面２０ａは、成形型に対面する側を加工して形成される。 The rail contact member 20 has a substantially cylindrical shape having an outer peripheral surface 20a, an inner peripheral surface 20b, and a pair of outer side surfaces 20c on both sides in the axial direction. The inner peripheral surface 20 b is formed in contact with the outer peripheral surface 11 a of the bottom wall portion 11, and the outer surface 20 c is formed in contact with the inner surface 12 a of the flange portion 12. The outer peripheral surface 20 a comes into contact with the rail 7.
The rail contact member 20 is formed by injecting a resin, for example, a thermoplastic urethane resin, into the outer peripheral groove 10a of the main body 10, that is, formed by injection molding.
For example, as shown in phantom lines in FIG. 3, the main body 10 is set in the mold 30, the outer circumferential groove 10 a and the mold 30 form an annular space portion 31, and urethane resin is injected into the annular space portion 31. An annular resin molded body is formed, and the recess 20a 'is processed into a shape in which the outer peripheral surface is recessed in an arc shape toward the center in the axial direction, thereby forming a rail contact member.
In the annular space portion 31, the inner peripheral surface 20 b of the rail contact member 20 is formed by the outer peripheral surface 11 a of the bottom wall portion 11, and the outer surface 20 c of the rail contact member 20 is formed by the inner side surfaces 12 a of the pair of flange portions 12. The outer peripheral surface 20a of the rail contact member is formed by processing the side facing the mold.

また、外周面２０ａの円弧形状は、図２に表すように鍔部１２の内側面１２ａと、円弧形状の端部との間に、平坦状の平端部２０ａ″が形成されるようにして加工される。つまり、外周面２０ａの鍔部１２側は、鍔部２１の先端と同じ平面上となる部分を有し、その部分を経て凹むように加工されている。
これにより、鍔部１２側の加工が行いやすくなり、かつレール接触部材２０の鍔部１２側での形状を安定して保つことができる。特に射出成形で形成されるものであるため、レール接触部材２０が外周溝１０ａ内で接着剤のようなもので接着されるものではないことから、この平端部２０ａ″を備えることが好ましい。 Further, the circular arc shape of the outer peripheral surface 20a is processed so that a flat flat end portion 20a ″ is formed between the inner side surface 12a of the flange portion 12 and the arc-shaped end portion as shown in FIG. That is, the flange portion 12 side of the outer peripheral surface 20a has a portion that is on the same plane as the tip of the flange portion 21, and is processed to be recessed through that portion.
Thereby, it becomes easy to perform the process by the side of the collar part 12, and the shape by the side of the collar part 12 of the rail contact member 20 can be maintained stably. Since the rail contact member 20 is not particularly bonded with an adhesive or the like in the outer peripheral groove 10a because it is formed by injection molding, it is preferable to include this flat end portion 20a ″.

前述するように外周面２０ａは、円弧形状に凹んでいるから、外周溝１０ａの矩形状とは異なる断面形状であり、レール接触部材２０は鍔部１２に接する側の樹脂が厚くなっている。これは、鍔部１２側の樹脂が厚いことで、レール接触部材２０が形状として安定した塊状とでき、鍔部１２の周方向係止め部１２ｂに係止めした状態を維持しやすくなる。また、鍔部１２の周方向係止部１２ｂに係止めする位置をなるべく底壁部１１に近接させることができるようになる。   As described above, since the outer peripheral surface 20a is recessed in an arc shape, the cross-sectional shape is different from the rectangular shape of the outer peripheral groove 10a, and the rail contact member 20 has a thick resin on the side in contact with the flange portion 12. This is because the resin on the side of the collar part 12 is thick, so that the rail contact member 20 can be formed into a stable lump shape, and it is easy to maintain the state of being locked to the circumferential locking part 12b of the collar part 12. Further, the position of locking the collar portion 12 to the circumferential locking portion 12b can be as close to the bottom wall portion 11 as possible.

前記レール接触部材２０の内周面２０ｂには、前記軸方向係止部１１ｂに係止する軸方向係止受部２０ｄが形成してある。
例えば、前記凹部１３と突条１４とそれぞれ嵌まり合う突条２１と凹部２２が周方向に連続して形成してある。
この軸方向係止受部２０ｄは突条２１のみ、又は凹部２２のみで良い。
要するに、この軸方向係止受部２０ｄは前記軸方向係止部１１ｂの係止部１５に係止する係止受部２３を有するものである。 On the inner peripheral surface 20b of the rail contact member 20, an axial locking receiving portion 20d that locks with the axial locking portion 11b is formed.
For example, ridges 21 and recesses 22 that fit into the recesses 13 and the ridges 14 are formed continuously in the circumferential direction.
This axial direction latching receiving portion 20d may be only the protrusion 21 or only the recess 22.
In short, the axial lock receiving portion 20d has a lock receiving portion 23 for locking to the lock portion 15 of the axial lock portion 11b.

前記レール接触部材２０の各外側面２０ｃには、前記周方向係止部１２ｂに係止する周方向係止受部２０ｅが形成してある。
例えば、前記孔１６に嵌まり合う突起２４が周方向に間隔を置いて複数形成してある。
要するに、この周方向係止受部２０ｅ（突起２４）、前記軸方向係止受部２０ｄ（突条２１、凹部２２）は、本体１０の外周溝１０ａに樹脂を注入して成形する際に、注入した樹脂が本体１０の軸方向係止部１１ｂ（凹部１３、突条１４）、周方向係止部１２ｂ（孔１６）に倣って成形されることでそれぞれ形成される。
例えば、凹部１３、孔１６に樹脂が入り込んで突条２１、突起２４を形成する。 Each outer surface 20c of the rail contact member 20 is formed with a circumferential engagement receiving portion 20e that engages with the circumferential engagement portion 12b.
For example, a plurality of protrusions 24 that fit into the holes 16 are formed at intervals in the circumferential direction.
In short, when the circumferential direction locking receiving portion 20e (projection 24) and the axial direction locking receiving portion 20d (projection 21 and recess 22) are molded by injecting resin into the outer peripheral groove 10a of the main body 10, The injected resin is formed by following the axial locking portion 11b (recess 13 and protrusion 14) and circumferential locking portion 12b (hole 16) of the main body 10, respectively.
For example, the resin enters the recess 13 and the hole 16 to form the protrusions 21 and the protrusions 24.

したがって、周方向係止受部２０ｅ、軸方向係止受部２０ｄを形成する作業が不要で、樹脂を注入してレール接触部材２０を形成するのと同時に形成されるから、戸車の製造が簡単である。
しかも、周方向係止受部２０ｅ、軸方向係止受部２０ｄは、本体１０の周方向係止部１２ｂ、軸方向係止部１１ｂにそれぞれしっかりと係止した状態で形成されるので、レール接触部材２０が本体１０に対して周方向（つまり、回転方向）及び軸方向に変位することを確実に阻止することができる。 Therefore, since the operation | work which forms the circumferential direction latching receiving part 20e and the axial direction latching receiving part 20d is unnecessary, since it forms simultaneously with injecting resin and forming the rail contact member 20, manufacture of a door pulley is easy. It is.
Moreover, the circumferential lock receiving portion 20e and the axial lock receiving portion 20d are formed in a state of being firmly locked to the circumferential lock portion 12b and the axial lock portion 11b of the main body 10, respectively. It is possible to reliably prevent the contact member 20 from being displaced in the circumferential direction (that is, the rotation direction) and the axial direction with respect to the main body 10.

このようであるから、図６に示すようにレール接触部材２０の外周面２０ａがレール７に接触して、そのレール接触部材２０に軸方向と直角の荷重Ｆ１のみが掛かる場合には、レール接触部材２０が、その荷重Ｆ１によって軸方向と直角方向に凹み変形しながらレール７に対して回転するが、レール接触部材２０の突起２４が本体１０の鍔部１２の孔１６に嵌まり合って係止していることで、そのレール接触部材２０が本体１０の鍔部１２に対して周方向に変位できないから、前述の荷重による凹み変形が抑制され、レール接触部材２０の過度の変形を防止できる。 Since this be the case, if the outer peripheral surface 20a of the rail contact members 20 as shown in FIG. 6 is in contact with the rail 7, only the load F 1 in the axial direction and perpendicular is applied to the rail contact members 20, the rail The contact member 20 rotates with respect to the rail 7 while being recessed and deformed in a direction perpendicular to the axial direction by the load F 1 , but the protrusion 24 of the rail contact member 20 fits into the hole 16 of the flange portion 12 of the main body 10. Since the rail contact member 20 cannot be displaced in the circumferential direction with respect to the flange portion 12 of the main body 10, the dent deformation due to the aforementioned load is suppressed, and the rail contact member 20 is excessively deformed. Can be prevented.

また、図７に示すように戸車５がレール７に対して傾いた状態、例えば自動ドアの扉１が強風雨などで押された場合においては、レール接触部材２０に掛かる荷重Ｆ２は戸車の軸方向と直角方向に対して斜め方向になり、そのレール接触部材２０に掛かる荷重は、そのレール接触部を境として右側２０−１よりも左側２０−２が大きくなる。
このために、レール接触部材２０の左側２０−２が圧縮され、右側２０−１は延びることになるが、レール接触部材２０の突条２１、凹部２２が本体１０の底壁部１１の凹部１３、突条１４に嵌まり合ってレール接触部材２０が本体１０の底壁部１１に対して軸方向に変位しないので、レール接触部材２０の前述の荷重による変形が抑制され、レール接触部材２０の過度の変形を防止できる、 In addition, as shown in FIG. 7, when the door 5 is tilted with respect to the rail 7, for example, when the door 1 of the automatic door is pushed by strong wind and rain, the load F 2 applied to the rail contact member 20 is The load applied to the rail contact member 20 in a direction oblique to the direction perpendicular to the axial direction is larger on the left side 20-2 than on the right side 20-1 with the rail contact portion as a boundary.
For this reason, the left side 20-2 of the rail contact member 20 is compressed and the right side 20-1 is extended, but the protrusion 21 and the concave portion 22 of the rail contact member 20 are the concave portion 13 of the bottom wall portion 11 of the main body 10. Since the rail contact member 20 is fitted to the protrusion 14 and is not displaced in the axial direction with respect to the bottom wall portion 11 of the main body 10, the deformation of the rail contact member 20 due to the aforementioned load is suppressed, and the rail contact member 20 Can prevent excessive deformation,

要するに、前述のように、レール接触部材２０におけるレール７との接触部を境として左側と右側に掛かる荷重にばらつきがあると、そのレール接触部２０は荷重の大きい方が圧縮変形し、小さい方が延び変形しようとする。つまり、レール接触部材２０が本体１０に対して軸方向に変位して圧縮、延び変形することになる。
しかし、本発明は、前述のようにレール接触部材２０が本体１０に対して軸方向に変位しないので、前述の圧縮変形、延び変形が抑制され、過度の変形を防止できる。 In short, as described above, when the load applied to the left side and the right side of the rail contact member 20 with respect to the contact portion with the rail 7 varies, the rail contact portion 20 compresses and deforms when the load is larger, and the smaller one. Tries to extend and deform. That is, the rail contact member 20 is displaced in the axial direction with respect to the main body 10 to be compressed and extended.
However, since the rail contact member 20 is not displaced in the axial direction with respect to the main body 10 as described above, the present invention can suppress the above-described compression deformation and extension deformation and prevent excessive deformation.

したがって、本発明の戸車であれば、レール接触部材２０の外周面２０ａがレール７に接触して回転する際に、そのレール接触部材２０に掛かる荷重で変形することが抑制され、過度の変形を防止できるから、レール接触部材２０にひび割れが発生することがない。   Therefore, in the case of the door wheel of the present invention, when the outer peripheral surface 20a of the rail contact member 20 rotates in contact with the rail 7, deformation due to the load applied to the rail contact member 20 is suppressed, and excessive deformation is caused. Since it can prevent, the rail contact member 20 does not crack.

自動ドアの扉取付部の説明図である。It is explanatory drawing of the door attachment part of an automatic door. 戸車の拡大断面図である。It is an expanded sectional view of a door cart. 本体の断面図である。It is sectional drawing of a main body. 本体の一部破断側面図である。It is a partially broken side view of a main body. 本体の周方向係止部の他の例を示す一部断面図である。It is a partial cross section figure which shows the other example of the circumferential direction latching | locking part of a main body. 戸車の動作説明図である。It is operation | movement explanatory drawing of a doorcar. 戸車の動作説明図である。It is operation | movement explanatory drawing of a doorcar.

符号の説明Explanation of symbols

１０…本体、１０ａ…外周溝、１０ｂ…軸穴、１１…底壁部、１１ａ…外周面、１１ｂ…軸方向係止部、１２…鍔部、１２ａ…内側面、１２ｂ…周方向係止受部、１３…凹部、１４…突条、２０…レール接触部材、２０ａ…外周面、２０ｂ…内周面、２０ｃ…外周面、２０ｄ…軸方向係止受部、２０ｅ…周方向係止受部、２１…突条、２２…凹部、２４…突起。   DESCRIPTION OF SYMBOLS 10 ... Main body, 10a ... Outer peripheral groove, 10b ... Shaft hole, 11 ... Bottom wall part, 11a ... Outer peripheral surface, 11b ... Axial direction locking part, 12 ... Gutter part, 12a ... Inner side surface, 12b ... Circumferential direction locking receptacle , 13 ... concave portion, 14 ... ridge, 20 ... rail contact member, 20a ... outer peripheral surface, 20b ... inner peripheral surface, 20c ... outer peripheral surface, 20d ... axial locking receiving portion, 20e ... circumferential locking receiving portion , 21 ... protrusions, 22 ... recesses, 24 ... protrusions.

Claims (2)

軸穴１０ｂを有する底壁部１１と、この底壁部１１の軸方向両側に一体に設けられた一対の鍔部１２，１２とで外周溝１０ａを形成した金属製の本体１０と、
前記本体１０の外周溝１０ａ内に成形され、外周面２０ａと前記底壁部１１の外周面１１ａに接した内周面２０ｂと、前記一対の鍔部１２の内側面１２ａに接した一対の外側面２０ｃを有した略筒形状で樹脂製のレール接触部材２０とを備え、
前記本体１０の底壁部１１の外周面１１ａに、周方向に連続している凹部１３と周方向に連続している突条１４を形成して軸方向係止部とし、
前記レール接触部材２０の内周面２０ｂに、前記凹部１３、突条１４に嵌まり合う周方向に連続している突条２１、凹部２２を形成して軸方向係止受部とし、
前記本体１０の一対の鍔部１２に、孔1６を周方向に間隔を置いて複数形成することで周方向係止部とし、
前記レール接触部材２０の一対の外側面２０ｃに、前記孔1６に嵌まり合う突起２４を設けることで周方向係止受部としたことを特徴とする戸車。 A metal main body 10 in which an outer peripheral groove 10a is formed by a bottom wall portion 11 having a shaft hole 10b and a pair of flange portions 12 and 12 provided integrally on both sides in the axial direction of the bottom wall portion 11;
A pair of outer surfaces formed in the outer peripheral groove 10a of the main body 10 and in contact with the outer peripheral surface 20a, the inner peripheral surface 20b in contact with the outer peripheral surface 11a of the bottom wall portion 11, and the inner side surface 12a of the pair of flange portions 12. A rail contact member 20 made of resin having a substantially cylindrical shape with side surfaces 20c,
On the outer peripheral surface 11a of the bottom wall portion 11 of the main body 10, a concave portion 13 continuous in the circumferential direction and a ridge 14 continuous in the circumferential direction are formed as an axial locking portion ,
On the inner peripheral surface 20b of the rail contact member 20, the protrusions 21 and recesses 22 that are continuous in the circumferential direction that fit into the recesses 13 and the protrusions 14 are formed to form an axial locking receiving portion .
A plurality of holes 16 are formed in the pair of flanges 12 of the main body 10 at intervals in the circumferential direction to form a circumferential locking portion .
Door roller, characterized in that the pair of outer surfaces 20c of the rail contact members 20, and a circumferential direction stopper receiving portion by providing a projection 24 which mate with the hole 16. レール接触部材２０の外周面２０ａは、鍔部１２側の肉厚が、軸方向中央の肉厚よりも厚くなるように円弧状に凹んだ凹部２０ａ´と、この凹部２０ａ´と鍔部１２の内側面１２ａとの間に平端部２０ａ″を備えている請求項１記載の戸車。The outer peripheral surface 20a of the rail contact member 20 has a recessed portion 20a ′ that is recessed in an arc shape so that the thickness on the flange portion 12 side is thicker than the thickness at the center in the axial direction, and the recess 20a ′ and the flange portion 12 The door wheel according to claim 1, further comprising a flat end portion 20a "between the inner side surface 12a and the inner side surface 12a.
JP2007174892A 2007-07-03 2007-07-03 Door-to-door Expired - Fee Related JP5046282B2 (en)

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CN109653625B (en) * 2019-01-12 2024-01-16 和拓(深圳)工业设计有限公司 Door and window pulley, pulley device and door and window
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