JP2009051452A

JP2009051452A - Caster device

Info

Publication number: JP2009051452A
Application number: JP2007222263A
Authority: JP
Inventors: Masami Adachi; 昌巳足立
Original assignee: SYSTEC KYOWA KK; Systech Kyowa KK
Current assignee: SYSTEC KYOWA KK; Systech Kyowa KK
Priority date: 2007-08-29
Filing date: 2007-08-29
Publication date: 2009-03-12
Anticipated expiration: 2027-08-29
Also published as: JP5054468B2

Abstract

<P>PROBLEM TO BE SOLVED: To provide a caster device with a locking function miniaturizing it by storing an operation member in an outer case and facilitating machining by simplifying a shape of a mounting hole in a bottom surface of furniture mounted with this. <P>SOLUTION: The caster device 1 comprises an outer case 11 and an inner case 41. The outer case 11 has an upper wall 12 and a guide wall 16. Wheels 62, 66 provided with lock wheels 65, 69 and a lock means 70 for engaging the lock wheels 65, 69 are provided on the inner case 41. An operation means 91 for operating the lock means 70 is provided on the outer case 11. The operation means 91 comprises an operation piece 95 for directly operating the lock means 70; an operation lever 92 projected from a lower part of the outer case 11; and a connection piece 93 for connecting the operation piece 95 to the operation lever 92. The connection piece 93 is provided in a recession part 36 formed on a guide wall 16. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、テーブル、いす、ワゴン、キャビネット等の家具に取り付けられるキャスタ装置に関するものである。 The present invention relates to a caster device attached to furniture such as a table, a chair, a wagon, and a cabinet.

従来のキャスタ装置は、アウターケースと、アウターケース内に回動可能に設けられたインナーケースとからなる。アウターケースは、上壁と、上壁の周縁に形成された周壁をを有する。インナーケースには、一対の車輪が回動可能に取り付けられ、一対の車輪には、周縁に凹部が形成されたロック車が設けられている。インナーケースには、前記ロック車の凹部を係止して車輪を回動不能にロックするロック手段が設けられている。アウターケースには、ロック手段を操作する操作手段が設けられている（例えば、特許文献１）。
特開平１０−１９３９０７号公報 A conventional caster device includes an outer case and an inner case that is rotatably provided in the outer case. The outer case has an upper wall and a peripheral wall formed on the periphery of the upper wall. A pair of wheels are rotatably attached to the inner case, and a pair of wheels is provided with a lock wheel having a recess formed in the periphery. The inner case is provided with locking means for locking the wheel so that the wheel cannot be rotated by engaging the recess of the lock wheel. The outer case is provided with operating means for operating the locking means (for example, Patent Document 1).
JP-A-10-193907

従来のキャスタ装置は、家具の底面に取付孔を形成し、アウターケースを当該取付孔内に収納してからネジ止め等により取り付けられる。従来のキャスタ装置は、操作手段がアウターケースから突出するため、家具の底面に形成される取付孔は、アウターケースの大きさのみならず、アウターケースから突出する操作手段の作動領域を含めた大きさにしなければならず、そのため形状が複雑となり、加工が面倒であるという問題点があった。また、当該取付孔に取り付けられるキャスタ装置は、アウターケース以上の大きさの取付孔にアウターケースが取り付けられるため、がたついた不安定な状態となり、固定するネジの負担も大きくなり、使用中にネジが取れて家具から外れてしまうという問題点があった。 A conventional caster device is attached by screwing or the like after forming an attachment hole in the bottom surface of the furniture and housing the outer case in the attachment hole. In the conventional caster device, since the operation means protrudes from the outer case, the mounting hole formed on the bottom surface of the furniture is not only the size of the outer case but also the size including the operation area of the operation means protruding from the outer case. Therefore, there is a problem that the shape is complicated and the processing is troublesome. In addition, the caster device attached to the mounting hole is in an unstable state because the outer case is attached to a mounting hole that is larger than the outer case. There was a problem that the screw could be removed from the furniture.

本願発明は、上記問題点に鑑み案出したものであって、操作部材をアウターケース内に収納して、家具の底面に形成する取付孔をアウターケースの大きさのみにすることができ、家具に形成する取付孔の形状を簡単にして加工を容易とし、しかも家具の底面に安定して且つ簡単に取り付けることができるロック機能付きキャスタ装置を提供することを目的とする。 The invention of the present application has been devised in view of the above problems, and the operation member is accommodated in the outer case, and the mounting hole formed in the bottom surface of the furniture can be made only the size of the outer case. It is an object of the present invention to provide a caster device with a lock function which can be easily processed by simplifying the shape of the mounting hole formed on the bottom, and which can be stably and easily attached to the bottom surface of furniture.

本願請求項１に係るキャスタ装置は、上記目的を達成するため、下記の要件を備えたことを特徴とする。
（イ）アウターケースと、アウターケース内に回動可能に設けられたインナーケースとからなること。
（ロ）アウターケースは、上壁と、筒状に形成されたガイド壁を有すること。
（ハ）インナーケースには、車輪が回動可能に取り付けられ、車輪には、周縁に凹部が形成されたロック車が設けられていること。
（ニ）インナーケースには、前記ロック車の凹部を係止して車輪を回動不能にロックするロック手段が設けられていること。
（ホ）アウターケースには、ロック手段を操作する操作手段が設けられていること。
（ヘ）操作手段は、アウターケースの上壁に設けられロック手段を直接操作する操作片と、アウターケースの下部から突出する操作レバーと、操作片と操作レバーを連結する連結片とからなること。
（ト）連結片は、ガイド壁に形成された凹部内に設けられるようになっていること。 The caster device according to claim 1 of the present application is characterized by having the following requirements in order to achieve the above object.
(B) It consists of an outer case and an inner case that is rotatably provided in the outer case.
(B) The outer case has an upper wall and a guide wall formed in a cylindrical shape.
(C) A wheel is rotatably attached to the inner case, and the wheel is provided with a lock wheel having a recess formed in the periphery.
(D) The inner case is provided with a locking means for locking the wheel so that the wheel cannot be rotated by engaging the recess of the lock wheel.
(E) The outer case must be provided with operating means for operating the locking means.
(F) The operation means comprises an operation piece provided on the upper wall of the outer case and directly operating the lock means, an operation lever protruding from the lower part of the outer case, and a connecting piece for connecting the operation piece and the operation lever. .
(G) The connecting piece should be provided in a recess formed in the guide wall.

本願請求項２に係るキャスタ装置は、上記目的を達成するため、下記の要件を備えたことを特徴とする。
（イ）ロック手段は、インナーケースに揺動可能に設けられたロック部材と、ロック部材の一方に形成され、前記ロック車の凹部を係止して車輪を回動不能にロックする凸部と、ロック部材の凸部をロック車の凹部側に付勢する弾性部材と、弾性部材の弾性に抗してロック部材の凸部をロック車の凹部から離脱する方向に押圧する押圧部材とを有すること。
（ロ）操作手段は、操作レバーを一方に移動すると押圧部材を押圧してロック部材の凸部を弾性部材の弾性に抗してロック車の凹部から離脱させてロックを解除し、操作レバーを他方に移動すると押圧部材の押圧を解除してロック部材の凸部を弾性部材の弾性によりロック車の凹部に係止させてロックするように構成されていること。 The caster device according to claim 2 of the present application is characterized by having the following requirements in order to achieve the above object.
(A) The lock means includes a lock member that is swingably provided on the inner case, and a convex portion that is formed on one side of the lock member and that locks the wheel so that the wheel cannot rotate by locking the recess of the lock wheel. An elastic member that urges the convex portion of the lock member toward the concave portion of the lock wheel, and a pressing member that presses the convex portion of the lock member in a direction away from the concave portion of the lock wheel against the elasticity of the elastic member. thing.
(B) When the operating means moves the operating lever to one side, the operating member presses the pressing member to release the locking member from the recessed portion of the lock wheel against the elasticity of the elastic member against the elasticity of the elastic member, and releases the operating lever. When it moves to the other side, it is configured to release the pressing of the pressing member and lock the convex portion of the locking member by engaging the concave portion of the lock wheel by the elasticity of the elastic member.

本願請求項３に係るキャスタ装置は、上記目的を達成するため、下記の要件を備えたことを特徴とする。
（イ）アウターケースと、アウターケース内に回動可能に設けられたインナーケースとからなること。
（ロ）アウターケースは、上壁と、筒状に形成されたガイド壁を有すること。
（ハ）インナーケースには、二つの車輪が独立して回動可能に取り付けられ、それぞれの車輪には、周縁に凹部が形成されたロック車が設けられていること。
（ニ）インナーケースには、前記二つのロック車の凹部を係止して二つの車輪を回動不能にロックするロック手段が設けられていること。
（ホ）アウターケースには、ロック手段を操作する操作手段が設けられていること。
（ヘ）操作手段は、アウターケースの上壁に設けられロック手段を直接操作する操作片と、アウターケースの下部から突出する操作レバーと、操作片と操作レバーを連結する連結片とからなること。
（ト）連結片は、ガイド壁に形成された凹部内に設けられるようになっていること。 The caster device according to claim 3 of the present application is characterized by having the following requirements in order to achieve the above object.
(B) It consists of an outer case and an inner case that is rotatably provided in the outer case.
(B) The outer case has an upper wall and a guide wall formed in a cylindrical shape.
(C) Two wheels are attached to the inner case so as to be independently rotatable, and each wheel is provided with a lock wheel having a recess formed in the periphery.
(D) The inner case is provided with a locking means for locking the recesses of the two lock wheels to lock the two wheels in a non-rotatable manner.
(E) The outer case must be provided with operating means for operating the locking means.
(F) The operation means comprises an operation piece provided on the upper wall of the outer case and directly operating the lock means, an operation lever protruding from the lower part of the outer case, and a connecting piece for connecting the operation piece and the operation lever. .
(G) The connecting piece should be provided in a recess formed in the guide wall.

本願請求項４に係るキャスタ装置は、上記目的を達成するため、下記の要件を備えたことを特徴とする。
（イ）ロック手段は、インナーケースに揺動可能に設けられたロック部材と、ロック部材の一方に形成され、前記二つのロック車の凹部を係止して二つの車輪を回動不能にロックする二つの凸部と、ロック部材の二つの凸部を二つのロック車の凹部側に付勢する弾性部材と、弾性部材の弾性に抗してロック部材の二つの凸部を二つのロック車の凹部から離脱する方向に押圧する押圧部材とを有すること。
（ロ）操作手段は、操作レバーを一方に移動すると押圧部材を押圧してロック部材の二つの凸部を弾性部材の弾性に抗して二つのロック車の凹部から離脱させてロックを解除し、操作レバーを他方に移動すると押圧部材の押圧を解除してロック部材の二つの凸部を弾性部材の弾性により二つのロック車の凹部に係止させてロックするように構成されていること。 The caster device according to claim 4 of the present application is characterized by having the following requirements in order to achieve the above object.
(A) The lock means is formed on one of the lock member swingably provided on the inner case and the lock member, and locks the two wheels so as not to rotate by engaging the recesses of the two lock wheels. Two convex parts, an elastic member that urges the two convex parts of the lock member toward the concave part of the two lock wheels, and the two convex parts of the lock member against the elasticity of the elastic members. And a pressing member that presses in a direction away from the recess.
(B) The operating means releases the lock by moving the operating lever to one side and pressing the pressing member to disengage the two convex portions of the locking member from the concave portions of the two lock wheels against the elasticity of the elastic member. When the operating lever is moved to the other side, the pressing member is released, and the two convex portions of the locking member are locked to the concave portions of the two lock wheels by the elasticity of the elastic member.

本願請求項５に係るキャスタ装置は、上記目的を達成するため、前記ロック部材の一方の凸部と他方の凸部は、突出方向の長さが異なるように形成されていることを特徴とする。 In order to achieve the above object, the caster device according to claim 5 of the present invention is characterized in that one convex portion and the other convex portion of the lock member are formed to have different lengths in the protruding direction. .

本願請求項６に係るキャスタ装置は、上記目的を達成するため、前記操作手段は、アウターケースに回動可能に取り付けられ、一方に回動させると押圧部材を押圧してロックを解除し、他方に回動させると押圧部材の押圧を解除してロックするように構成されていることを特徴とする。 In the caster device according to claim 6 of the present invention, in order to achieve the above object, the operating means is rotatably attached to the outer case, and when it is rotated to one side, the pressing member is pressed to release the lock, and the other When it is rotated, the pressing member is released and locked.

本願請求項７に係るキャスタ装置は、上記目的を達成するため、前記操作手段は、アウターケースにスライド可能に取り付けられ、一方にスライドさせると押圧部材を押圧してロックを解除し、他方にスライドさせると押圧部材の押圧を解除してロックするように構成されていることを特徴とする。 In order to achieve the above object, the caster device according to claim 7 of the present invention is slidably attached to the outer case, and when it is slid to one side, the pressing member is pressed to release the lock, and the other is slid to the other side. If it does, it will be comprised so that the press of a press member may be cancelled | released and it may lock.

本願発明に係るキャスタ装置は、外観を構成するアウターケースに凹部を形成して、車輪をロックするロック手段のロック及びロック解除を行う操作手段の作動領域を確保したので、アウターケースから操作手段が突出することがない。そのため、本願発明に係るキャスタ装置を取り付ける家具の取付孔は、アウターケースの外観形状と同じでよく、複雑な加工を行う必要がないという効果がある。また、本願発明に係るキャスタ装置を取り付ける家具の取付孔は、アウターケースの外観形状と同じでよいので、がたつきがなく安定して且つ簡単に取り付けることができるという効果がある。本願発明に係るキャスタ装置は、構造が簡単で部品点数が少なく、コンパクトにすることができるという効果がある。 In the caster device according to the present invention, a concave portion is formed in the outer case constituting the external appearance, and the operation area of the operating means for locking and unlocking the locking means for locking the wheel is secured. It does not protrude. Therefore, the attachment hole of the furniture for attaching the caster device according to the present invention may be the same as the outer shape of the outer case, and there is an effect that it is not necessary to perform complicated processing. Moreover, since the attachment hole of the furniture which attaches the caster apparatus which concerns on this invention may be the same as the external appearance shape of an outer case, there is an effect that it can attach stably and easily without shakiness. The caster device according to the present invention has an effect that the structure is simple, the number of parts is small, and the size can be reduced.

本願発明に係るキャスタ装置の実施の形態を図１乃至図１６に基づいて説明する。図１は、本願発明にキャスタ装置の実施の形態を示す全体斜視図である。図２は、図１のキャスタ装置の分解斜視図である。図３は、図１のキャスタ装置の外観図であって、（ａ）が上面図、（ｂ）が正面図、（ｃ）が側面図である。図４は、図１のキャスタ装置の操作部材を外した外観図であって、（ａ）が斜視図、（ｂ）が上面図、（ｃ）が操作部材の説明図である。図５は、図１のキャスタ装置のインナーケースの外観図であって、（ａ）が斜視図、（ｂ）が上面図、（ｃ）が正面図、（ｄ）が底面図である。 An embodiment of a caster device according to the present invention will be described with reference to FIGS. FIG. 1 is an overall perspective view showing an embodiment of a caster device according to the present invention. FIG. 2 is an exploded perspective view of the caster device of FIG. 3A and 3B are external views of the caster device of FIG. 1, wherein FIG. 3A is a top view, FIG. 3B is a front view, and FIG. 3C is a side view. 4A and 4B are external views of the caster device of FIG. 1 with the operation member removed, wherein FIG. 4A is a perspective view, FIG. 4B is a top view, and FIG. 4C is an explanatory view of the operation member. FIGS. 5A and 5B are external views of the inner case of the caster device of FIG. 1, wherein FIG. 5A is a perspective view, FIG. 5B is a top view, FIG. 5C is a front view, and FIG.

図６は、図１のキャスタ装置のロック機構の要部説明図であって、（ａ）が操作部材の斜視図、（ｂ）がロック部材と車輪の斜視図である。図７は、図１のキャスタ装置のロック機構の全体説明図であって、（ａ）が上面図、（ｂ）が（ａ）のＡ−Ａ断面図である。図８は、図１のキャスタ装置のロック機構の動作説明図であって、（ａ）がロック解放時の断面図、（ｂ）がロック移行時の断面図、（ｂ）がロック時の断面図である。図９は、図１のキャスタ装置を家具に組み込んだ説明図であって、（ａ）が全体図、（ｂ）が拡大図である。図１０は、図１のキャスタ装置を家具に組み込む前の斜視図である。 6A and 6B are explanatory views of a main part of the lock mechanism of the caster device of FIG. 1, wherein FIG. 6A is a perspective view of an operation member, and FIG. 6B is a perspective view of a lock member and wheels. 7A and 7B are overall explanatory views of the lock mechanism of the caster device of FIG. 1, wherein FIG. 7A is a top view and FIG. 7B is a cross-sectional view taken along line AA of FIG. 8A and 8B are operation explanatory views of the lock mechanism of the caster device of FIG. 1, wherein FIG. 8A is a cross-sectional view when the lock is released, FIG. FIG. FIG. 9 is an explanatory diagram in which the caster device of FIG. 1 is incorporated in furniture, in which (a) is an overall view and (b) is an enlarged view. FIG. 10 is a perspective view before the caster device of FIG. 1 is incorporated into furniture.

図１１は、本願発明にキャスタ装置の他の実施の形態を示す全体図であって、（ａ）が上面図、（ｂ）が正面図、（ｃ）が側面図である。図１２は、図１１のキャスタ装置の操作部材を外した外観図であって、（ａ）が上面図、（ｂ）が操作部材の説明図である。図１３は、図１１のキャスタ装置のロック機構の動作説明図であって、（ａ）がロック時の断面図、（ｂ）がロック解放時の断面図である。図１４は、本願発明にキャスタ装置の他の実施の形態を示す全体図であって、（ａ）が上面図、（ｂ）が正面図、（ｃ）が側面図である。図１５は、図１４のキャスタ装置の操作部材を外した外観図であって、（ａ）が上面図、（ｂ）が操作部材の説明図である。図１６は、図１４のキャスタ装置のロック機構の動作説明図であって、（ａ）がロック時の断面図、（ｂ）がロック解放時の断面図である。 FIG. 11 is an overall view showing another embodiment of the caster device according to the present invention, in which (a) is a top view, (b) is a front view, and (c) is a side view. 12A and 12B are external views of the caster device of FIG. 11 with the operation member removed, where FIG. 12A is a top view and FIG. 12B is an explanatory view of the operation member. 13A and 13B are operation explanatory views of the lock mechanism of the caster device of FIG. 11, in which FIG. 13A is a cross-sectional view when locked, and FIG. 13B is a cross-sectional view when lock is released. FIG. 14 is an overall view showing another embodiment of the caster device according to the present invention, in which (a) is a top view, (b) is a front view, and (c) is a side view. 15A and 15B are external views of the caster device of FIG. 14 with the operation member removed, wherein FIG. 15A is a top view and FIG. 15B is an explanatory view of the operation member. 16A and 16B are operation explanatory views of the lock mechanism of the caster device of FIG. 14, wherein FIG. 16A is a cross-sectional view when locked, and FIG. 16B is a cross-sectional view when lock is released.

キャスタ装置１は、アウターケース１１と、アウターケース１１内に回動可能に設けられたインナーケース４１とからなる。アウターケース１１は、上壁１２と、筒状に形成されたガイド壁１６を有する。インナーケース４１には、二つの車輪６２，６６が独立して回動可能に取り付けられ、それぞれの車輪６２，６６には、周縁に凹部６３，６７が形成されたロック車６５，６９が設けられている。インナーケース４１には、前記二つのロック車６５，６９の凹部６３，６７を係止して二つの車輪６２，６６を回動不能にロックするロック手段７０が設けられている。 The caster device 1 includes an outer case 11 and an inner case 41 that is rotatably provided in the outer case 11. The outer case 11 has an upper wall 12 and a guide wall 16 formed in a cylindrical shape. Two wheels 62 and 66 are rotatably attached to the inner case 41, and the wheels 62 and 66 are provided with lock wheels 65 and 69 having recesses 63 and 67 formed on the periphery. ing. The inner case 41 is provided with a locking means 70 that locks the two wheels 62 and 66 so as not to rotate by engaging the recesses 63 and 67 of the two lock wheels 65 and 69.

アウターケース１１には、ロック手段７０を操作する操作手段９１が設けられている。操作手段９１は、アウターケース１１の上壁１２に設けられロック手段７０を直接操作する操作片９５と、アウターケース１１の下部から突出する操作レバー９２と、操作片９５と操作レバー９２を連結する連結片９３とからなる。連結片９３は、ガイド壁１６に形成された凹部３６内に設けられるようになっている。 The outer case 11 is provided with operation means 91 for operating the lock means 70. The operation means 91 is provided on the upper wall 12 of the outer case 11 and directly operates the lock means 70, the operation lever 92 protruding from the lower part of the outer case 11, and the operation piece 95 and the operation lever 92 are connected. It consists of a connecting piece 93. The connecting piece 93 is provided in a recess 36 formed in the guide wall 16.

ロック手段７０は、インナーケース４１に揺動可能に設けられたロック部材７１と、ロック部材７１の一方７１ａに形成され、前記二つのロック車６５，６９の凹部６３，６７を係止して二つの車輪６２，６６を回動不能にロックする二つの凸部７５，７６と、ロック部材７１の二つの凸部７５，７６を二つのロック車６５，６９の凹部６３，６７側に付勢する弾性部材５４と、弾性部材５４の弾性に抗してロック部材７１の二つの凸部７５，７６を二つのロック車６５，６９の凹部６３，６７から離脱する方向に押圧する押圧部材８１とを有する。 The lock means 70 is formed on a lock member 71 swingably provided on the inner case 41 and one of the lock members 71, and locks the recesses 63, 67 of the two lock wheels 65, 69. The two convex portions 75 and 76 that lock the two wheels 62 and 66 so as not to rotate and the two convex portions 75 and 76 of the lock member 71 are urged toward the concave portions 63 and 67 of the two lock wheels 65 and 69. An elastic member 54, and a pressing member 81 that presses the two convex portions 75 and 76 of the lock member 71 in a direction away from the concave portions 63 and 67 of the two lock wheels 65 and 69 against the elasticity of the elastic member 54. Have.

操作手段９１は、操作レバー９２を一方に移動すると押圧部材８１を押圧してロック部材７１の二つの凸部７５，７６を弾性部材５４の弾性に抗して二つのロック車６５，６９の凹部６３，６７から離脱させてロックを解除し、操作レバー９２を他方に移動すると押圧部材８１の押圧を解除してロック部材７１の二つの凸部７５，７６を弾性部材５４の弾性により二つのロック車６５，６９の凹部６３，６７に係止させてロックするように構成されている。なお、前記ロック部材７１の一方７１ａの凸部７５と他方の凸部７６は、突出方向の長さが異なるように形成されている。 When the operating lever 91 moves to one side, the operating means 91 presses the pressing member 81 to cause the two convex portions 75 and 76 of the lock member 71 to resist the elasticity of the elastic member 54, and the concave portions of the two lock wheels 65 and 69. When the operating lever 92 is moved to the other side, the pressing of the pressing member 81 is released and the two protrusions 75 and 76 of the locking member 71 are locked by the elasticity of the elastic member 54. The vehicle is configured to be locked by being locked in the recesses 63 and 67 of the cars 65 and 69. In addition, the convex part 75 of the one 71a of the said locking member 71 and the other convex part 76 are formed so that the length of a protrusion direction may differ.

前記操作手段９１は、アウターケース１１に回動可能に取り付けられ、一方に回動させると押圧部材８１を押圧してロックを解除し、他方に回動させると押圧部材８１の押圧を解除してロックするように構成されている。また、操作手段１１１，１２１は、アウターケース１１にスライド可能に取り付けられ、一方にスライドさせると押圧部材８１を押圧してロックを解除し、他方にスライドさせると押圧部材８１の押圧を解除してロックするように構成しても良い。 The operating means 91 is rotatably attached to the outer case 11, and when it is rotated to one side, the pressing member 81 is pressed to release the lock, and when it is rotated to the other side, the pressing of the pressing member 81 is released. It is configured to lock. Further, the operating means 111 and 121 are slidably attached to the outer case 11, and when pressed to one side, the pressing member 81 is pressed to release the lock, and when slid to the other side, the pressing of the pressing member 81 is released. You may comprise so that it may lock.

キャスタ装置１は、外観を構成するアウターケース１１に凹部３６を形成して、車輪６２，６６をロックするロック手段７０のロック及びロック解除を行う操作手段９１の作動領域を確保したので、アウターケース１１から操作手段９１が突出することがない。そのため、キャスタ装置１を取り付ける家具１０１の取付孔１０３は、アウターケース１１の外観形状と同じでよく、複雑な加工を行う必要がない。また、キャスタ装置１を取り付ける家具１０１の取付孔１０３は、アウターケース１１の外観形状と同じでよいので、がたつきがなく安定して且つ簡単に取り付けることができる。キャスタ装置１は、構造が簡単で部品点数が少なく、コンパクトにすることができる。 Since the caster device 1 has the recess 36 formed in the outer case 11 constituting the outer appearance and the operating area of the operating means 91 for locking and unlocking the locking means 70 for locking the wheels 62 and 66 is secured, the outer case 11 11 does not protrude from the operating means 91. Therefore, the attachment hole 103 of the furniture 101 to which the caster device 1 is attached may be the same as the outer shape of the outer case 11 and does not require complicated processing. Moreover, since the attachment hole 103 of the furniture 101 which attaches the caster apparatus 1 may be the same as the external shape of the outer case 11, it can be attached stably and easily without rattling. The caster device 1 has a simple structure, a small number of parts, and can be made compact.

さらに、キャスタ装置について、詳細に説明する。図２に示すように、キャスタ装置１は、アウターケース１１と、アウターケース１１内に回動可能に設けられたインナーケース４１とからなる。図４，７に示すように、アウターケース１１は、円板状の上壁１２と、上壁１２の周囲に形成された周壁１３と、周壁１３の下端に接続板１５を介して接続された円筒状のガイド壁１６と、ガイド壁１６の下端周縁に形成された底壁１７と、底壁１７の周縁に形成された突壁１９とからなる。従って、アウターケース１１は、ガイド壁１６内に、上壁１２と周壁１３とからなる収納ケース３０が形成された形状となる。 Further, the caster device will be described in detail. As shown in FIG. 2, the caster device 1 includes an outer case 11 and an inner case 41 that is rotatably provided in the outer case 11. As shown in FIGS. 4 and 7, the outer case 11 is connected to a disk-shaped upper wall 12, a peripheral wall 13 formed around the upper wall 12, and a lower end of the peripheral wall 13 via a connection plate 15. The guide wall 16 includes a cylindrical guide wall 16, a bottom wall 17 formed on the periphery of the lower end of the guide wall 16, and a protruding wall 19 formed on the periphery of the bottom wall 17. Therefore, the outer case 11 has a shape in which a storage case 30 including the upper wall 12 and the peripheral wall 13 is formed in the guide wall 16.

上壁１２の内面（下面）略中央には、アウターケース１１（収納ケース３０）内に位置するようにして中心軸２１が突設されている。中心軸２１は、筒状であって、先端に係止突起２２が形成され、さらに割溝２３が形成され、係止突起２２を内側に撓ませることができるようになっている。上壁１２の内面（下面）周囲には、球体２５を受ける第１の受け部２６が形成されている。 A central shaft 21 projects from the inner surface (lower surface) of the upper wall 12 substantially at the center so as to be positioned in the outer case 11 (storage case 30). The central shaft 21 has a cylindrical shape, and a locking projection 22 is formed at the tip, and a split groove 23 is formed, so that the locking projection 22 can be bent inward. A first receiving portion 26 that receives the sphere 25 is formed around the inner surface (lower surface) of the upper wall 12.

図４、８に示すように、上壁１２の外面（上面）には、中心軸２１を挟んだ形で、対向して係止爪２８，２９が突設形成されている。また、係止爪２８，２９を結ぶ直線上であって、底壁１７の外面（上面）には、支軸３１が突設されている。支軸３１は、収納ケース３０の外側に位置している。上壁１２の外面（上面）には、第１の位置決め穴３２と第２の位置決め穴３３が形成されている。第１の位置決め穴３２と第２の位置決め穴３３は、支軸３１を中心とした円弧上に形成されている。また、底壁１７には、複数のネジ通し孔３５・・が設けられている。 As shown in FIGS. 4 and 8, locking claws 28 and 29 are formed on the outer surface (upper surface) of the upper wall 12 so as to face each other with the central shaft 21 interposed therebetween. A support shaft 31 projects from the outer surface (upper surface) of the bottom wall 17 on a straight line connecting the locking claws 28 and 29. The support shaft 31 is located outside the storage case 30. A first positioning hole 32 and a second positioning hole 33 are formed on the outer surface (upper surface) of the upper wall 12. The first positioning hole 32 and the second positioning hole 33 are formed on an arc centered on the support shaft 31. The bottom wall 17 is provided with a plurality of screw holes 35.

アウターケース１１は、前記したように、収納ケース３０を有しているが、収納ケース３０の略中心、即ち、中心軸２１の位置は、環状のガイド壁１６の略中心より偏倚した位置にある。即ち、収納ケース３０の略中心の位置は、前記した係止爪２８，２９を結ぶ直線上であって、支軸３１から離間する方向に設定されている。そのため、前記した支軸３１は、ガイド壁１６内に位置することができる。 As described above, the outer case 11 has the storage case 30, but the approximate center of the storage case 30, that is, the position of the center shaft 21 is deviated from the approximate center of the annular guide wall 16. . That is, the substantially central position of the storage case 30 is set on a straight line connecting the above-described locking claws 28 and 29 and away from the support shaft 31. Therefore, the above-described support shaft 31 can be positioned in the guide wall 16.

ガイド壁１６は、前記した係止爪２８，２９を結ぶ直線を中心線として両側が切り欠かれており、凹部３６が形成されている。底壁１７は、前記した係止爪２８，２９を結ぶ直線を中心線とした略台形上の突出部１８が形成され、当該突出部１８側の突壁１９も、前記した係止爪２８，２９を結ぶ直線を中心線として両側が切り欠かれており、凹部３７が形成されている。突出部１８の両側には、突壁１９と略同じ高さとなる肉厚部３４，３４が形成され、当該肉厚部３４，３４に前記ネジ通し孔３５・・が設けられている。 The guide wall 16 is notched on both sides with a straight line connecting the locking claws 28 and 29 as a center line, and a recess 36 is formed. The bottom wall 17 is formed with a substantially trapezoidal protruding portion 18 having a straight line connecting the locking claws 28 and 29 as a center line, and the protruding wall 19 on the protruding portion 18 side also includes the locking claws 28, Both sides are cut out with a straight line connecting 29 as a center line, and a recess 37 is formed. Thick portions 34 and 34 having substantially the same height as the protruding wall 19 are formed on both sides of the projecting portion 18, and the threaded holes 35 are provided in the thick portions 34 and 34.

前記した周壁１３とガイド壁１６の間には、補強片３８が設けられている。また、ガイド壁１６と突壁１９の間には、補強片３９が設けられている。また、ガイド壁１６の周囲には、外周方向と略直角の方向（上下方向）にガイド突条２０が形成され、ガイド壁１６が所定の取付孔１０３に滑らかに装着できるようになっている。 A reinforcing piece 38 is provided between the peripheral wall 13 and the guide wall 16 described above. A reinforcing piece 39 is provided between the guide wall 16 and the protruding wall 19. Further, a guide protrusion 20 is formed around the guide wall 16 in a direction (vertical direction) substantially perpendicular to the outer peripheral direction so that the guide wall 16 can be smoothly mounted in the predetermined mounting hole 103.

図５に示すように、インナーケース４１は、円盤状に形成され、円形の天壁４２と、天壁４２の周縁に形成された傾斜壁４３と、傾斜壁４３の周縁に形成された側壁４５とからなる。天壁４２の略中心には、前記中心軸２１を貫通させる貫通孔４７が形成されている。傾斜壁４３の外面（上面）には、前記球体２５を受ける第２の受け部４６が形成されている。 As shown in FIG. 5, the inner case 41 is formed in a disc shape, and has a circular ceiling wall 42, an inclined wall 43 formed on the periphery of the ceiling wall 42, and a side wall 45 formed on the periphery of the inclined wall 43. It consists of. A through hole 47 that penetrates the central shaft 21 is formed at the approximate center of the top wall 42. A second receiving portion 46 for receiving the sphere 25 is formed on the outer surface (upper surface) of the inclined wall 43.

インナーケース４１の側壁４５には、対向して軸受け突起５１，５１が形成されている。軸受け突起５１には、略Ｕ字状の軸受け凹部５２が形成されている。軸受け凹部５２は、開口端５２ａ，５２ａが内側に向かって突出して車軸６１の外径より幅が狭くなっており、取り付けられた車軸６１が抜け出ないようになっている。また、軸受け突起５１には、軸受け凹部５２に取り付けられた車軸６１の軸方向への移動を阻止する阻止片５３が形成されている。 Bearing projections 51, 51 are formed on the side wall 45 of the inner case 41 so as to face each other. A substantially U-shaped bearing recess 52 is formed in the bearing protrusion 51. The bearing recess 52 has the opening ends 52a and 52a projecting inward to have a width narrower than the outer diameter of the axle 61, so that the attached axle 61 does not come out. Further, the bearing protrusion 51 is formed with a blocking piece 53 for blocking the movement of the axle 61 attached to the bearing recess 52 in the axial direction.

インナーケース４１の内面には、対向して軸受け部５５，５５が形成されている。軸受け部５５には、略Ｕ字状の軸受け凹部５６が形成されている。また軸受け部５５には、軸受け凹部５６に取り付けられた揺動軸７３が軸受け凹部５６から抜け出ないようにするストッパー片５７が形成されている。インナーケース４１の内面であって、前記軸受け部５５，５５間には、押圧部材８１を回動不能に案内する案内部５８が形成され、さらにバネ５４を装着する取付ピン５９が突設されている。 Bearing portions 55, 55 are formed on the inner surface of the inner case 41 so as to face each other. The bearing portion 55 is formed with a substantially U-shaped bearing recess 56. The bearing portion 55 is formed with a stopper piece 57 that prevents the swing shaft 73 attached to the bearing recess 56 from coming out of the bearing recess 56. On the inner surface of the inner case 41, between the bearing portions 55, 55, a guide portion 58 for guiding the pressing member 81 so as not to rotate is formed, and a mounting pin 59 for mounting the spring 54 is further provided. Yes.

図２に示すように、前記インナーケース４１の対向する軸受け突起５１，５１には、車軸６１が取り付けられる。車軸６１には、一対の車輪６２，６６がそれぞれ独立して回動可能に設けられている。車輪６２，６６の側面には、周面に複数の係止凹部６３，６７が一定間隔で形成されたロック車６５，６９が一体的に形成されている。車輪６２，６６は、ロック車６５，６９が内側に位置するようにして、車軸６１に回動可能に取り付けられている。 As shown in FIG. 2, an axle 61 is attached to the bearing projections 51, 51 facing the inner case 41. The axle 61 is provided with a pair of wheels 62 and 66 that are independently rotatable. On the side surfaces of the wheels 62 and 66, lock wheels 65 and 69 are integrally formed with a plurality of locking recesses 63 and 67 formed on the peripheral surface at regular intervals. The wheels 62 and 66 are rotatably attached to the axle 61 such that the lock wheels 65 and 69 are located inside.

車軸６１は、開口端５２ａ，５２ａを拡げるようにして軸受け凹部５２，５２内に差し込まれて、軸受け凹部５２，５２内に回動可能に取り付けられ、この状態の時、軸受け凹部５２の開口端５２ａ，５２ａが内側に向かって突出して幅が狭くなっているので、軸受け凹部５２，５２から簡単には抜け出ないようになっている。また、車軸６１は、両端が軸受け突起５１に形成された阻止片５３，５３に当接するので、軸方向への移動が規制されている。 The axle 61 is inserted into the bearing recesses 52, 52 so as to expand the opening ends 52a, 52a, and is rotatably mounted in the bearing recesses 52, 52. In this state, the opening end of the bearing recess 52 is opened. Since 52a and 52a protrude inward and the width | variety is narrow, it does not come out from the bearing recessed parts 52 and 52 easily. Further, since the axle 61 is in contact with the blocking pieces 53 formed on the bearing projection 51 at both ends, movement in the axial direction is restricted.

図２，６に示すように、インナーケース４１の対向する軸受け部５５，５５には、ロック部材７１が取り付けられている。ロック部材７１は、揺動片７２と、揺動片７２の下側略中央に設けられた揺動軸７３とからなる。揺動片７２の揺動軸７３から一方に突出する側（以下、一方７１ａ側という）の下面には、前記二つのロック車６５，６９の係止凹部６３，６７を係止して二つの車輪６２，６６を回動不能にロックする一対の凸部７５，７６が形成されている。一方の凸部７５と他方の凸部７６は、突出方向の長さが異なるように形成され、一方の凸部７５の方が他方の凸部７６より長くなっている。 As shown in FIGS. 2 and 6, a lock member 71 is attached to the bearing portions 55, 55 facing the inner case 41. The lock member 71 includes a swing piece 72 and a swing shaft 73 provided substantially at the lower center of the swing piece 72. Locking recesses 63 and 67 of the two lock wheels 65 and 69 are locked to the lower surface of the swinging piece 72 on one side protruding from the swinging shaft 73 (hereinafter referred to as the one 71a side). A pair of convex portions 75 and 76 for locking the wheels 62 and 66 so as not to rotate are formed. One convex portion 75 and the other convex portion 76 are formed to have different lengths in the protruding direction, and one convex portion 75 is longer than the other convex portion 76.

揺動片７２の一方７１ａ側であって上面には、前記取付ピン５９に取り付けられるバネ５４の先端を位置決めする位置決め穴７７が形成されている。揺動片７２の揺動軸７３から他方に突出する側（以下、他方７１ｂ側という）は、幅広に形成され、上面に位置決め溝７９が形成されている。揺動軸７３は、ストッパー片５７，５７を乗り越えるようにして軸受け凹部５６，５６内に差し込まれ、軸受け凹部５６，５６内に回動可能に取り付けられ、ストッパー片５７，５７によって、軸受け凹部５６，５６から簡単には抜け出ないようになっている。 A positioning hole 77 for positioning the tip of the spring 54 attached to the mounting pin 59 is formed on the upper surface on the one 71a side of the swing piece 72. The side of the swing piece 72 that protrudes from the swing shaft 73 to the other (hereinafter referred to as the other 71b side) is formed wide and a positioning groove 79 is formed on the top surface. The swing shaft 73 is inserted into the bearing recesses 56, 56 so as to get over the stopper pieces 57, 57, and is rotatably attached to the bearing recesses 56, 56. , 56 so that it cannot be easily removed.

前記アウターケース１１の中心軸２１には、押圧部材８１が取り付けられている。押圧部材８１は、中心軸２１内に摺動可能に配置される押圧軸８２と、押圧軸８２の下端に設けられたアーム８３と、アーム８３の下面に形成された押圧突起８５とからなる。押圧部材８１は、押圧軸８２が中心軸２１内に取り付けられると、アーム８３がインナーケース４１の案内部５８にガイドされて、回動不能となり、押圧突起８５がロック部材７１の位置決め溝７９に当接する。 A pressing member 81 is attached to the central shaft 21 of the outer case 11. The pressing member 81 includes a pressing shaft 82 that is slidably disposed within the central shaft 21, an arm 83 provided at the lower end of the pressing shaft 82, and a pressing protrusion 85 formed on the lower surface of the arm 83. In the pressing member 81, when the pressing shaft 82 is attached in the central shaft 21, the arm 83 is guided by the guide portion 58 of the inner case 41, so that the pressing protrusion 85 is not positioned in the positioning groove 79 of the lock member 71. Abut.

アウターケース１１には、操作部材９１が回動可能に取り付けられている。操作部材９１は、操作レバー９２と、操作レバー９２と略直角であって、操作レバー９２の一端に下端が連接された連結片９３と、操作レバー９２と略平行であって、連結片９３の上端に連接された操作片９５とからなる。 An operation member 91 is rotatably attached to the outer case 11. The operation member 91 includes an operation lever 92, a connection piece 93 that is substantially perpendicular to the operation lever 92 and has a lower end connected to one end of the operation lever 92, and is substantially parallel to the operation lever 92. The operation piece 95 is connected to the upper end.

操作片９５は、前記アウターケース１１の支軸３１を差し込み、支軸３１を中心として回動可能にする中心孔９６と、アウターケース１１の係止爪２８及び係止爪２９に摺動可能に係止される湾曲した摺動溝９７，９８が形成されている。摺動溝９７，９８は、中心孔９６（支軸３１）を中心とした円弧状に形成されている。操作片９５の下面には、前記アウターケース１１の第１の位置決め穴３２及び第２の位置決め穴３３に係脱する位置決め突起９４が形成されている。また、操作片９５の下面には凹部９９が設けられ、凹部９９内にはガイド傾斜面１００が形成されている。ガイド傾斜面１００は、前記押圧部材８１の押圧軸８２の上端に摺接し、押圧軸８２を押圧するようになっている。 The operation piece 95 is slidable in the center hole 96 that allows the support shaft 31 of the outer case 11 to be inserted and rotated about the support shaft 31, and the locking claw 28 and the locking claw 29 of the outer case 11. Curved sliding grooves 97 and 98 to be locked are formed. The sliding grooves 97 and 98 are formed in an arc shape centered on the center hole 96 (support shaft 31). On the lower surface of the operation piece 95, a positioning projection 94 that engages with and disengages from the first positioning hole 32 and the second positioning hole 33 of the outer case 11 is formed. A recess 99 is provided on the lower surface of the operation piece 95, and a guide inclined surface 100 is formed in the recess 99. The guide inclined surface 100 is in sliding contact with the upper end of the pressing shaft 82 of the pressing member 81 and presses the pressing shaft 82.

キャスタ装置１は、以下のようにして組み立てられる。アウターケース１１の下面側を上向きにしてアウターケース１１に形成された環状の第１の受け部２６に複数の球体２５を載置する。インナーケース４１を、下面側を上向きにして、貫通孔４７にアウターケース１１の中心軸２１を貫通させる。中心軸２１は、係止突起２２が貫通孔４７を通過する時に内側に撓み、係止突起２２が貫通孔４７を通過後、元の状態に復帰して係止突起２２が貫通孔４７周縁に係止することにより、アウターケース１１内にインナーケース４１を回動可能に保持する。インナーケース４１は、これの環状の第２の受け部４６とアウターケース１１の第１の受け部２６間に球体２５が保持され、中心軸２１を中心にして滑らかに回動（旋回）可能となる。 The caster device 1 is assembled as follows. The plurality of spheres 25 are placed on the annular first receiving portion 26 formed on the outer case 11 with the lower surface side of the outer case 11 facing upward. With the inner case 41 facing downward, the central shaft 21 of the outer case 11 is passed through the through hole 47. The central shaft 21 bends inward when the locking projection 22 passes through the through-hole 47, and after the locking projection 22 passes through the through-hole 47, the center shaft 21 returns to its original state and the locking projection 22 comes to the periphery of the through-hole 47. By locking, the inner case 41 is rotatably held in the outer case 11. The inner case 41 has a spherical body 25 held between the annular second receiving portion 46 and the first receiving portion 26 of the outer case 11, and can smoothly rotate (turn) around the central axis 21. Become.

インナーケース４１の取付ピン５９にバネ５４を取り付ける。押圧部材８１の押圧軸８２を中心軸２１に差し込むと、アーム８３がインナーケース４１の案内部５８にガイドされて、押圧部材８１は回動不能となる。インナーケース４１の対向する軸受け凹部５６，５６にロック部材７１の揺動軸７３を差し込むと、ストッパー片５７，５７を乗り越えてから揺動軸７３が軸受け凹部５６，５６内に回動可能に取り付けられ、ストッパー片５７，５７によって、揺動軸７３が軸受け凹部５６，５６から簡単には抜け出ない。 A spring 54 is attached to the attachment pin 59 of the inner case 41. When the pressing shaft 82 of the pressing member 81 is inserted into the central shaft 21, the arm 83 is guided by the guide portion 58 of the inner case 41, and the pressing member 81 cannot be rotated. When the swing shaft 73 of the lock member 71 is inserted into the opposing bearing recesses 56, 56 of the inner case 41, the swing shaft 73 is rotatably mounted in the bearing recesses 56, 56 after overcoming the stopper pieces 57, 57. The stopper pieces 57 and 57 prevent the swing shaft 73 from coming out of the bearing recesses 56 and 56 easily.

ロック部材７１が軸受け部５５，５５に取り付けられると、取付ピン５９に取り付けられたバネ５４の先端が揺動片７２の位置決め穴７７内に挿設されて揺動片７２の一方７１ａ側が付勢され、押圧部材８１の押圧突起８５が揺動片７２の位置決め溝７９に当接される。 When the lock member 71 is attached to the bearing portions 55, 55, the tip of the spring 54 attached to the attachment pin 59 is inserted into the positioning hole 77 of the swing piece 72, and one side 71 a of the swing piece 72 is biased. Then, the pressing protrusion 85 of the pressing member 81 is brought into contact with the positioning groove 79 of the swing piece 72.

一対の車輪６２，６６を回動可能に備えた車軸６１を軸受け凹部５２，５２に差し込むと、開口端５２ａ，５２ａを拡げるようにして軸受け凹部５２，５２内に回動可能に取り付けられ、軸受け凹部５２の開口端５２ａ，５２ａが内側に向かって突出して幅が狭くなり、車軸６１が軸受け凹部５２，５２から簡単には抜け出ない。 When an axle 61 provided with a pair of wheels 62 and 66 so as to be rotatable is inserted into the bearing recesses 52 and 52, the opening ends 52a and 52a are widened so as to be rotatably mounted in the bearing recesses 52 and 52. The opening ends 52a, 52a of the recess 52 project inward and become narrower, and the axle 61 cannot easily come out of the bearing recesses 52, 52.

アウターケース１１の支軸３１に操作部材９１の中心孔９６を差し込み、アウターケース１１の係止爪２８を操作部材９１の摺動溝９７に摺動可能に係止させ、アウターケース１１の係止爪２９を操作部材９１の摺動溝９８に摺動可能に係止させることにより、アウターケース１１に操作部材９１が回動可能に取り付けられる。操作部材９１の連結片９３は、ガイド壁１６の凹部３６内に収納され、さらに操作部材９１の操作レバー９２は、底壁１７の凹部３７内に収納され、操作レバー９２の先端部９２ａのみがアウターケース１１の下部から突出する。このように、アウターケース１１に形成された凹部３６，３７によって、操作部材９１の作動領域が確保され、操作部材９１の大部分がアウターケース１１内に収納される。なお、操作レバー９２の先端には、操作摘み９２ｂが一体で形成されていても良い。 The center hole 96 of the operating member 91 is inserted into the support shaft 31 of the outer case 11, and the locking claw 28 of the outer case 11 is slidably locked in the sliding groove 97 of the operating member 91. The operation member 91 is rotatably attached to the outer case 11 by slidably engaging the claw 29 with the slide groove 98 of the operation member 91. The connecting piece 93 of the operation member 91 is accommodated in the recess 36 of the guide wall 16, and the operation lever 92 of the operation member 91 is accommodated in the recess 37 of the bottom wall 17, and only the tip 92 a of the operation lever 92 is accommodated. It protrudes from the lower part of the outer case 11. As described above, the operation region of the operation member 91 is secured by the recesses 36 and 37 formed in the outer case 11, and most of the operation member 91 is accommodated in the outer case 11. An operation knob 92b may be integrally formed at the tip of the operation lever 92.

操作部材９１を支軸３１を中心として反時計方向に回動させ、操作部材９１の位置決め突起９４を第１の位置決め穴３２に係止させると、図８（ａ）に示すように、ガイド傾斜面１００によって押圧部材８１の押圧軸８２が押し下げられ、ロック部材７１の揺動片７２の他方７１ｂが押圧されて、ロック部材７１の一方７１ａがバネ５４の弾性に抗して上方に移動し、凸部７５，７６がロック車６５，６９の係止凹部６３，６７から外れているため、一対の車輪６２，６６が回動可能になる。 When the operating member 91 is rotated counterclockwise about the support shaft 31 and the positioning projection 94 of the operating member 91 is locked in the first positioning hole 32, the guide tilts as shown in FIG. The pressing shaft 82 of the pressing member 81 is pushed down by the surface 100, the other 71b of the swing piece 72 of the locking member 71 is pressed, and one 71a of the locking member 71 moves upward against the elasticity of the spring 54, Since the convex portions 75 and 76 are disengaged from the locking concave portions 63 and 67 of the lock wheels 65 and 69, the pair of wheels 62 and 66 can be rotated.

操作部材９１を支軸３１を中心として時計方向に回動させ、操作部材９１の位置決め突起９４を第２の位置決め穴３３に係止させると、図７（ｂ），図８（ｃ）に示すように、凹部９９によって押圧部材８１の押圧軸８２の押圧が解除され、ロック部材７１の揺動片７２の他方７１ｂが押圧されなくなり、ロック部材７１の一方７１ａがバネ５４の弾性により下方に押し下げられ、凸部７５，７６がロック車６５，６９の係止凹部６３，６７を係止して、一対の車輪６２，６６を回動不能にロックする。 When the operation member 91 is rotated clockwise about the support shaft 31 and the positioning projection 94 of the operation member 91 is locked in the second positioning hole 33, the state shown in FIGS. 7B and 8C is shown. As described above, the pressing of the pressing shaft 82 of the pressing member 81 is released by the concave portion 99, the other 71 b of the swing piece 72 of the locking member 71 is not pressed, and the one 71 a of the locking member 71 is pushed downward by the elasticity of the spring 54. Then, the convex portions 75 and 76 lock the locking recesses 63 and 67 of the lock wheels 65 and 69 to lock the pair of wheels 62 and 66 so as not to be rotatable.

図９，１０に示すように、キャスタ装置１は、家具１０１の底面１０２に形成された取付孔１０３に、突壁１９が取付孔１０３の周縁に当接するまでガイド壁１６を差し込み、ネジ１０５，１０５をネジ通し孔３５，３５に通して底面１０２にねじ込むことによって、家具１０１の底面１０２に固定して取り付けらている。前記したように、操作部材９１は、アウターケース１１の凹部３６，３７に収納されているので、取付孔１０３は操作部材９１を考慮せずにガイド壁１６と同じ形状の円形の孔であればよい。そのため、取付孔１０３は、簡単に形成することができる。なお、ガイド壁１６は、周面にガイド突条２０が形成されているため、取付孔１０３にスムーズに差し込むことができる。また、操作部材９１の操作レバー９２の先端部９２ａは、凹部３７と連通する突壁１９の開口１９ａから突出する形となる。突壁１９は、取付孔１０３内に収納されないので、操作レバー９２の先端部９２ａを利用して操作部材９１を操作することになる。 As shown in FIGS. 9 and 10, the caster device 1 inserts the guide wall 16 into the mounting hole 103 formed in the bottom surface 102 of the furniture 101 until the protruding wall 19 abuts the peripheral edge of the mounting hole 103, 105 is fixed to the bottom surface 102 of the furniture 101 by being screwed into the bottom surface 102 through the threaded holes 35 and 35. As described above, since the operation member 91 is accommodated in the recesses 36 and 37 of the outer case 11, the attachment hole 103 is a circular hole having the same shape as the guide wall 16 without considering the operation member 91. Good. Therefore, the attachment hole 103 can be easily formed. The guide wall 16 can be smoothly inserted into the mounting hole 103 because the guide protrusion 20 is formed on the peripheral surface. In addition, the distal end portion 92 a of the operation lever 92 of the operation member 91 has a shape protruding from the opening 19 a of the protruding wall 19 communicating with the recess 37. Since the protruding wall 19 is not housed in the mounting hole 103, the operation member 91 is operated using the distal end portion 92 a of the operation lever 92.

キャスタ装置１は、操作レバー９２を操作して、操作部材９１の位置決め突起９４を第１の位置決め穴３２に係止させると、前記したように、ロック部材７１がロック車６５，６９を係止していないので、一対の車輪６２，６６が回動可能となり、且つインナーケース４１がアウターケース１１に対して旋回可能なので一対の車輪６２，６６の向きを変えながら、家具１０１を移動させることができる。キャスタ装置１は、操作レバー９２を操作して、操作部材９１の位置決め突起９４を第２の位置決め穴３３に係止させると、前記したように、ロック部材７１がロック車６５，６９を係止して、一対の車輪６２，６６を回動可能にロックし、家具１０１を所定位置で固定することができる。 When the caster device 1 operates the operation lever 92 to lock the positioning protrusion 94 of the operation member 91 in the first positioning hole 32, the lock member 71 locks the lock wheels 65 and 69 as described above. Since the pair of wheels 62 and 66 can be turned and the inner case 41 can turn with respect to the outer case 11, the furniture 101 can be moved while changing the direction of the pair of wheels 62 and 66. it can. When the caster device 1 operates the operation lever 92 to lock the positioning protrusion 94 of the operation member 91 in the second positioning hole 33, the lock member 71 locks the lock wheels 65 and 69 as described above. Thus, the pair of wheels 62 and 66 can be locked so as to be rotatable, and the furniture 101 can be fixed at a predetermined position.

キャスタ装置１は、ロック車６５，６９の係止凹部６３，６７を係止する凸部７５，７６の長さが異なっている。理由は次の通りである。キャスタ装置１は、前記したように、操作部材９１を操作してロック部材７１をロックさせる時、バネ５４の弾性により、凸部７５，７６がロック車６５，６９の係止凹部６３，６７を係止する。例えば、凸部７５，７６が同じ長さである場合、一方の凸部７５がロック車６５の係止凹部６３に係止しようとしても、他方の凸部７６がロック車６９の周縁に当接しているため、係止できない場合がある。このように、凸部７５，７６が同じ長さである場合、お互いが係止を阻止することになる可能性がある。 In the caster device 1, the lengths of the convex portions 75 and 76 that latch the locking concave portions 63 and 67 of the lock wheels 65 and 69 are different. The reason is as follows. As described above, when the caster device 1 operates the operation member 91 to lock the lock member 71, the projections 75 and 76 have the locking recesses 63 and 67 of the lock wheels 65 and 69 formed by the elasticity of the spring 54. Lock. For example, when the convex portions 75 and 76 have the same length, even if one convex portion 75 tries to engage with the engaging concave portion 63 of the lock wheel 65, the other convex portion 76 contacts the peripheral edge of the lock wheel 69. Therefore, it may not be locked. Thus, when the convex parts 75 and 76 are the same length, there exists a possibility that mutual may prevent a latching.

しかし、キャスタ装置１は、凸部７５が凸部７６より長いので、凸部７６にじゃまされず、ロック車６５の係止凹部６３を係止して車輪６２をロックする。この状態で、凸部７６はロック車６９の係止凹部６７を係止するが、仮にロック車６９の周縁に当接して係止凹部６７に係止していなくても、車輪６２をわずかに回動させるだけで周縁から外れて係止凹部６７を係止し、車輪６２も回動不能にロックする。このように、キャスタ装置１は、凸部７５，７６の長さが異なるので、車輪６２，６６を確実にロックさせることができる。 However, since the convex part 75 is longer than the convex part 76, the caster apparatus 1 is not disturbed by the convex part 76, but engages the engaging concave part 63 of the lock wheel 65 to lock the wheel 62. In this state, the convex portion 76 engages the locking recess 67 of the lock wheel 69, but the wheel 62 is slightly lifted even if it is not in contact with the locking recess 67 by contacting the peripheral edge of the lock wheel 69. By simply rotating, the locking recess 67 is released from the peripheral edge, and the wheel 62 is locked so as not to rotate. Thus, since the length of the convex parts 75 and 76 differs, the caster apparatus 1 can lock the wheels 62 and 66 reliably.

上記実施の形態では、操作部材９１を支軸３１を中心として回動可能に取り付けたが、図１１乃至図１３に示すように、操作部材１１１を前後方向にスライドするように取り付けても良い。操作部材１１１は、操作部材９１と同様に、操作レバー１１２と、連結片１１３と、操作片１１５とからなる。操作部材１１１は、操作片１１５がアウターケース１１の上壁１２に対向して形成された複数のガイド突起１１６間にガイドされ、前後方向にスライドできるようになっている。 In the above embodiment, the operation member 91 is attached to be rotatable about the support shaft 31. However, as shown in FIGS. 11 to 13, the operation member 111 may be attached so as to slide in the front-rear direction. Similar to the operation member 91, the operation member 111 includes an operation lever 112, a connecting piece 113, and an operation piece 115. The operation member 111 is guided between a plurality of guide projections 116 formed so that the operation piece 115 faces the upper wall 12 of the outer case 11 and can slide in the front-rear direction.

操作片１１５の下面には、操作部材９１と同様に凹部１１９とガイド傾斜面１２０が形成されている。図１３（ｂ）に示すように、操作部材１１１を後方に引き出すと、ガイド傾斜面１２０によって押圧部材８１の押圧軸８２が押し下げられ、ロック部材７１の揺動片７２の他方７１ｂが押圧されて、ロック部材７１の一方７１ａがバネ５４の弾性に抗して上方に移動し、凸部７５，７６がロック車６５，６９の係止凹部６３，６７から外れているため、一対の車輪６２，６６が回動可能になる。１３（ａ）に示すように、操作部材１１１を前方に押し込むと、凹部１１９によって押圧部材８１の押圧軸８２の押圧が解除され、ロック部材７１の揺動片７２の他方７１ｂが押圧されなくなり、ロック部材７１の一方７１ａがバネ５４の弾性により下方に押し下げられ、凸部７５，７６がロック車６５，６９の係止凹部６３，６７を係止して、一対の車輪６２，６６を回動不能にロックする。なお、連結片１１３は、ガイド壁１６の凹部３６内でスライドし、操作レバー１１２は、底壁１７の凹部３７内でスライドするので、前記実施の形態と同様に操作部材１１１はアウターケース１１内から突出することがない。 Similar to the operation member 91, a recess 119 and an inclined guide surface 120 are formed on the lower surface of the operation piece 115. As shown in FIG. 13B, when the operation member 111 is pulled out rearward, the pressing shaft 82 of the pressing member 81 is pushed down by the guide inclined surface 120, and the other 71 b of the swing piece 72 of the lock member 71 is pressed. Since one of the lock members 71 moves upward against the elasticity of the spring 54 and the convex portions 75 and 76 are disengaged from the locking concave portions 63 and 67 of the lock wheels 65 and 69, the pair of wheels 62 and 66 becomes rotatable. 13 (a), when the operating member 111 is pushed forward, the pressing of the pressing shaft 82 of the pressing member 81 is released by the recess 119, and the other 71b of the rocking piece 72 of the locking member 71 is not pressed. One side 71a of the lock member 71 is pushed downward by the elasticity of the spring 54, and the convex portions 75 and 76 engage with the engagement concave portions 63 and 67 of the lock wheels 65 and 69 to rotate the pair of wheels 62 and 66. Lock impossible. Since the connecting piece 113 slides in the recess 36 of the guide wall 16 and the operation lever 112 slides in the recess 37 of the bottom wall 17, the operation member 111 is placed in the outer case 11 as in the above embodiment. It does not protrude from.

また、図１４乃至図１６に示すように、操作部材１２１を前後方向にスライドするように取り付けても良い。操作部材１２１は、操作部材９１と同様に、操作レバー１２２と、連結片１２３と、操作片１２５とからなる。操作部材１２１は、操作片１２５がアウターケース１１の上壁１２に対向して形成された複数のガイド突起１２６間にガイドされ、前後方向にスライドできるようになっている。また、操作レバー１２２の下面には、ハート状の摺動カム溝１２７が形成され、アウターケース１１の底壁１７に設けられたガイドピン１２８の先端１２９が摺動カム溝１２７に案内されている。さらに、操作部材１２１は、アウターケース１１の底壁１７に設けられた弾性部材（スプリング）１３０によって後方（突出方向）に付勢されている。従って、操作部材１２１は、操作レバー１２２の押し込む動作だけで前後方向にスライドする。 Further, as shown in FIGS. 14 to 16, the operation member 121 may be attached so as to slide in the front-rear direction. Similar to the operation member 91, the operation member 121 includes an operation lever 122, a connecting piece 123, and an operation piece 125. The operation member 121 is configured such that the operation piece 125 is guided between a plurality of guide projections 126 formed to face the upper wall 12 of the outer case 11 and can slide in the front-rear direction. A heart-shaped sliding cam groove 127 is formed on the lower surface of the operation lever 122, and a tip 129 of a guide pin 128 provided on the bottom wall 17 of the outer case 11 is guided to the sliding cam groove 127. . Further, the operation member 121 is urged rearward (in the protruding direction) by an elastic member (spring) 130 provided on the bottom wall 17 of the outer case 11. Therefore, the operation member 121 slides in the front-rear direction only by the operation of pushing the operation lever 122.

操作片１２５の下面には、操作部材９１と同様に凹部１３１とガイド傾斜面１３２が形成されている。図１６（ｂ）に示すように、操作部材１２１を前方に押し込むと、ガイド傾斜面１３２によって押圧部材８１の押圧軸８２が押し下げられ、ロック部材７１の揺動片７２の他方７１ｂが押圧されて、ロック部材７１の一方７１ａがバネ５４の弾性に抗して上方に移動し、凸部７５，７６がロック車６５，６９の係止凹部６３，６７から外れているため、一対の車輪６２，６６が回動可能になる。１６（ａ）に示すように、さらに操作部材１２１を前方に押し込むと、凹部１３１によって押圧部材８１の押圧軸８２の押圧が解除され、ロック部材７１の揺動片７２の他方７１ｂが押圧されなくなり、ロック部材７１の一方７１ａがバネ５４の弾性により下方に押し下げられ、凸部７５，７６がロック車６５，６９の係止凹部６３，６７を係止して、一対の車輪６２，６６を回動不能にロックする。なお、連結片１２３は、ガイド壁１６の凹部３６内でスライドし、操作レバー１２２は、底壁１７の凹部３７内でスライドするので、前記実施の形態と同様に操作部材１２１はアウターケース１１内から突出することがない。 Similar to the operation member 91, a recess 131 and a guide inclined surface 132 are formed on the lower surface of the operation piece 125. As shown in FIG. 16B, when the operating member 121 is pushed forward, the pressing shaft 82 of the pressing member 81 is pushed down by the guide inclined surface 132, and the other 71b of the swing piece 72 of the lock member 71 is pressed. Since one of the lock members 71 moves upward against the elasticity of the spring 54 and the convex portions 75 and 76 are disengaged from the locking concave portions 63 and 67 of the lock wheels 65 and 69, the pair of wheels 62 and 66 becomes rotatable. When the operation member 121 is further pushed forward as shown in FIG. 16A, the depression of the pressing shaft 82 of the pressing member 81 is released by the recess 131, and the other 71b of the swing piece 72 of the lock member 71 is not pressed. One of the lock members 71 is pushed downward by the elasticity of the spring 54, and the convex portions 75 and 76 engage the engagement concave portions 63 and 67 of the lock wheels 65 and 69 to rotate the pair of wheels 62 and 66. Lock immovably. Since the connecting piece 123 slides in the recess 36 of the guide wall 16 and the operation lever 122 slides in the recess 37 of the bottom wall 17, the operation member 121 is placed in the outer case 11 as in the above embodiment. It does not protrude from.

本発明に係るキャスタ装置は、テーブル、いす、ワゴン、キャビネット等の家具の移動装置に利用可能である。 The caster device according to the present invention can be used for a moving device for furniture such as a table, a chair, a wagon, and a cabinet.

本願発明にキャスタ装置の実施の形態を示す全体斜視図である。1 is an overall perspective view showing an embodiment of a caster device according to the present invention. 図１のキャスタ装置の分解斜視図である。It is a disassembled perspective view of the caster apparatus of FIG. 図１のキャスタ装置の外観図である。It is an external view of the caster apparatus of FIG. 図１のキャスタ装置の操作部材を外した外観図である。It is the external view which removed the operation member of the caster apparatus of FIG. 図１のキャスタ装置のインナーケースの外観図である。It is an external view of the inner case of the caster apparatus of FIG. 図１のキャスタ装置のロック機構の要部説明図である。It is principal part explanatory drawing of the locking mechanism of the caster apparatus of FIG. 図１のキャスタ装置のロック機構の全体説明図である。It is a whole explanatory drawing of the locking mechanism of the caster apparatus of FIG. 図１のキャスタ装置のロック機構の動作説明図である。It is operation | movement explanatory drawing of the locking mechanism of the caster apparatus of FIG. 図１のキャスタ装置を家具に組み込んだ説明図である。It is explanatory drawing which incorporated the caster apparatus of FIG. 1 in furniture. 図１のキャスタ装置を家具に組み込む前の斜視図である。It is a perspective view before incorporating the caster apparatus of FIG. 1 into furniture. 本願発明にキャスタ装置の他の実施の形態を示す全体図である。It is a general view which shows other embodiment of the caster apparatus in this invention. 図１１のキャスタ装置の操作部材を外した外観図である。It is the external view which removed the operation member of the caster apparatus of FIG. 図１１のキャスタ装置のロック機構の動作説明図である。It is operation | movement explanatory drawing of the locking mechanism of the caster apparatus of FIG. 本願発明にキャスタ装置の他の実施の形態を示す全体図である。It is a general view which shows other embodiment of the caster apparatus in this invention. 図１４のキャスタ装置の操作部材を外した外観図である。It is the external view which removed the operation member of the caster apparatus of FIG. 図１４のキャスタ装置のロック機構の動作説明図である。It is operation | movement explanatory drawing of the locking mechanism of the caster apparatus of FIG.

Explanation of symbols

１キャスタ装置
１１アウターケース
１２上壁
１３周壁
１５接続板
１６ガイド壁
１７底壁
１８突出部
１９突壁
１９ａ開口
２０ガイド突条
２１中心軸
２２係止突起
２３割溝
２５球体
２６第１の受け部
２８係止爪
２９係止爪
３０収納ケース
３１支軸
３２第１の位置決め穴
３３第２の位置決め穴
３４肉厚部
３５ネジ通し孔
３６凹部
３７凹部
３８補強片
３９補強片
４１インナーケース
４２天壁
４３傾斜壁
４５側壁
４６第２の受け部
４７貫通孔
５１軸受け突起
５２軸受け凹部
５２ａ開口端
５３阻止片
５４バネ（弾性部材）
５５軸受け部
５６軸受け凹部
５７ストッパー片
５８案内部
５９取付ピン
６１車軸
６２車輪
６３係止凹部
６５ロック車
６６車輪
６７係止凹部
６９ロック車
７０ロック手段
７１ロック部材
７１ａ一方
７１ｂ他方
７２揺動片
７３揺動軸
７５凸部
７６凸部
７７位置決め穴
７９位置決め溝
８１押圧部材
８２押圧軸
８３アーム
８５押圧突起
９１操作部材（操作手段）
９２操作レバー
９２ａ先端部
９２ｂ操作摘み
９３連結片
９４位置決め突起
９５操作片
９６中心孔
９７摺動溝
９８摺動溝
９９凹部
１００ガイド傾斜面
１０１家具
１０２底面
１０３取付孔
１０５ネジ
１１１操作部材（操作手段）
１１２操作レバー
１１３連結片
１１５操作片
１１６ガイド突起
１１９凹部
１２０ガイド傾斜面
１２１操作部材（操作手段）
１２２操作レバー
１２３連結片
１２５操作片
１２６ガイド突起
１２７摺動カム溝
１２８ガイドピン
１２９先端
１３０弾性部材（スプリング）
１３１凹部
１３２ガイド傾斜面 DESCRIPTION OF SYMBOLS 1 Caster apparatus 11 Outer case 12 Upper wall 13 Peripheral wall 15 Connection board 16 Guide wall 17 Bottom wall 18 Protruding part 19 Protruding wall 19a Opening 20 Guide protrusion 21 Central axis 22 Locking protrusion 23 Split groove 25 Sphere 26 First receiving part 28 Locking Claw 29 Locking Claw 30 Storage Case 31 Supporting Shaft 32 First Positioning Hole 33 Second Positioning Hole 34 Thick Part 35 Screw Through Hole 36 Recess 37 Recess 38 Reinforcement Piece 39 Reinforcement Piece 41 Inner Case 42 Top Wall 43 Inclined Wall 45 Side Wall 46 Second Receiving Portion 47 Through Hole 51 Bearing Protrusion 52 Bearing Recess 52a Open End 53 Blocking Piece 54 Spring (Elastic Member)
55 Bearing part 56 Bearing recess 57 Stopper piece 58 Guide part 59 Mounting pin 61 Axle 62 Wheel 63 Locking recess 65 Lock wheel 66 Wheel 67 Locking recess 69 Lock wheel 70 Locking means 71 Lock member 71a One 71b The other 72 Swinging piece 73 Oscillating shaft 75 convex portion 76 convex portion 77 positioning hole 79 positioning groove 81 pressing member 82 pressing shaft 83 arm 85 pressing projection 91 operation member (operation means)
92 operation lever 92a tip 92b operation knob 93 connecting piece 94 positioning projection 95 operation piece 96 center hole 97 sliding groove 98 sliding groove 99 concave portion 100 guide inclined surface 101 furniture 102 bottom surface 103 mounting hole 105 screw 111 operation member (operation means) )
112 Operation lever 113 Connection piece 115 Operation piece 116 Guide protrusion 119 Recess 120 Guide inclined surface 121 Operation member (operation means)
122 Operation lever 123 Connection piece 125 Operation piece 126 Guide projection 127 Sliding cam groove 128 Guide pin 129 Tip 130 Elastic member (spring)
131 Concave portion 132 Guide inclined surface

Claims

A caster device having the following requirements.
(B) It consists of an outer case and an inner case that is rotatably provided in the outer case.
(B) The outer case has an upper wall and a guide wall formed in a cylindrical shape.
(C) A wheel is rotatably attached to the inner case, and the wheel is provided with a lock wheel having a recess formed in the periphery.
(D) The inner case is provided with a locking means for locking the wheel so that the wheel cannot be rotated by engaging the recess of the lock wheel.
(E) The outer case must be provided with operating means for operating the locking means.
(F) The operation means comprises an operation piece provided on the upper wall of the outer case and directly operating the lock means, an operation lever protruding from the lower part of the outer case, and a connecting piece for connecting the operation piece and the operation lever. .
(G) The connecting piece should be provided in a recess formed in the guide wall.

The caster device according to claim 1, comprising the following requirements.
(A) The lock means includes a lock member that is swingably provided on the inner case, and a convex portion that is formed on one side of the lock member and that locks the wheel so that the wheel cannot rotate by locking the recess of the lock wheel. An elastic member that urges the convex portion of the lock member toward the concave portion of the lock wheel, and a pressing member that presses the convex portion of the lock member in a direction away from the concave portion of the lock wheel against the elasticity of the elastic member. thing.
(B) When the operating means moves the operating lever to one side, the operating member presses the pressing member to release the locking member from the recessed portion of the lock wheel against the elasticity of the elastic member against the elasticity of the elastic member, and releases the operating lever. When it moves to the other side, it is configured to release the pressing of the pressing member and lock the convex portion of the locking member by engaging the concave portion of the lock wheel by the elasticity of the elastic member.

A caster device having the following requirements.
(B) It consists of an outer case and an inner case that is rotatably provided in the outer case.
(B) The outer case has an upper wall and a guide wall formed in a cylindrical shape.
(C) Two wheels are attached to the inner case so as to be independently rotatable, and each wheel is provided with a lock wheel having a recess formed in the periphery.
(D) The inner case is provided with a locking means for locking the recesses of the two lock wheels to lock the two wheels in a non-rotatable manner.
(E) The outer case must be provided with operating means for operating the locking means.
(F) The operation means comprises an operation piece provided on the upper wall of the outer case and directly operating the lock means, an operation lever protruding from the lower part of the outer case, and a connecting piece for connecting the operation piece and the operation lever. .
(G) The connecting piece should be provided in a recess formed in the guide wall.

The caster device according to claim 3, comprising the following requirements.
(A) The lock means is formed on one of the lock member swingably provided on the inner case and the lock member, and locks the two wheels so as not to rotate by engaging the recesses of the two lock wheels. Two convex parts, an elastic member that urges the two convex parts of the lock member toward the concave part of the two lock wheels, and the two convex parts of the lock member against the elasticity of the elastic members. And a pressing member that presses in a direction away from the recess.
(B) The operating means releases the lock by moving the operating lever to one side and pressing the pressing member to disengage the two convex portions of the locking member from the concave portions of the two lock wheels against the elasticity of the elastic member. When the operating lever is moved to the other side, the pressing member is released, and the two convex portions of the locking member are locked to the concave portions of the two lock wheels by the elasticity of the elastic member.

The caster device according to claim 4, wherein one protrusion and the other protrusion of the lock member are formed to have different lengths in the protruding direction.

The operating means is attached to the outer case so as to be rotatable. When the operating means is rotated to one side, the pressing member is pressed to release the lock, and when the operating means is rotated to the other, the pressing member is released to be locked. The caster device according to claim 2, 4 or 5, wherein the caster device is configured.

The operating means is slidably attached to the outer case, and is configured to release the lock by pressing the pressing member when sliding to one side and to release and lock the pressing member when sliding to the other. The caster device according to claim 2, 4 or 5, wherein