WO2014013753A1 - Roulette à orientation libre - Google Patents

Roulette à orientation libre Download PDF

Info

Publication number
WO2014013753A1
WO2014013753A1 PCT/JP2013/057178 JP2013057178W WO2014013753A1 WO 2014013753 A1 WO2014013753 A1 WO 2014013753A1 JP 2013057178 W JP2013057178 W JP 2013057178W WO 2014013753 A1 WO2014013753 A1 WO 2014013753A1
Authority
WO
WIPO (PCT)
Prior art keywords
support shaft
stage
annular groove
ball
caster
Prior art date
Application number
PCT/JP2013/057178
Other languages
English (en)
Japanese (ja)
Inventor
快春 浅井
Original Assignee
株式会社タイコー
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社タイコー filed Critical 株式会社タイコー
Priority to JP2014525731A priority Critical patent/JP6129172B2/ja
Publication of WO2014013753A1 publication Critical patent/WO2014013753A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B33/00—Castors in general; Anti-clogging castors
    • B60B33/0002—Castors in general; Anti-clogging castors assembling to the object, e.g. furniture
    • B60B33/0005—Castors in general; Anti-clogging castors assembling to the object, e.g. furniture characterised by mounting method
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B33/00—Castors in general; Anti-clogging castors
    • B60B33/006—Castors in general; Anti-clogging castors characterised by details of the swivel mechanism
    • B60B33/0065—Castors in general; Anti-clogging castors characterised by details of the swivel mechanism characterised by details of the swivel axis
    • B60B33/0068—Castors in general; Anti-clogging castors characterised by details of the swivel mechanism characterised by details of the swivel axis the swivel axis being vertical

Definitions

  • the present invention relates to a free caster, and more particularly, is suitable for use in a traveling body such as a cart, a shopping cart, and a chair, particularly a traveling body used for transferring heavy objects, and when the traveling body is pushed.
  • a swivel caster that turns smoothly in response to the traveling direction of the traveling body in both cases (at the time of forward movement) and at the time of pulling (at the time of backward movement and towing), thereby enabling the traveling body to travel smoothly. It is about.
  • Swivel casters are installed on the legs of traveling bodies such as carts, shopping carts, chairs, etc., to facilitate the forward and backward movement of the traveling bodies, and by freely turning in response to changes in the orientation of the traveling bodies, The function of enabling smooth running by changing the direction of the running body is achieved.
  • a universal caster includes a fixed plate fixed to a bottom surface of a carriage or the like, a universal bracket installed on the fixed plate via a bearing device, and a wheel pivotally supported by the universal bracket.
  • the support shaft pivotally supported by the bearing device is shifted from the vertical line passing through the wheel support shaft of the universal bracket.
  • the present invention has been made to solve such a problem, and in a cart or the like for loading and transferring heavy objects, even if a considerable weight load is applied to each free caster, the free swiveling of each free caster is hindered. It is an object of the present invention to provide a free caster that has no fear and in particular has no side shake during forward and backward movements, and thus has no hindrance to traveling in narrow spaces.
  • the present invention has a height that is the same as that of a conventional general caster, or a height that is lower than that, so that it can freely rotate freely and no side shake occurs during forward or backward movement. It is an object of the present invention to provide a two-axis universal caster with a compact configuration that does not hinder narrow space travel.
  • the invention according to claim 1 for solving the above-mentioned problem is provided with two upper and lower rotating parts, and the lower rotating part is attached to the upper support shaft of the upper rotating part so that the upper rotating part is
  • the universal bracket for pivotally supporting the wheel is attached to the lower stage support shaft of the lower stage rotation part so as to be pivotable with respect to the lower stage rotation part, and the lower stage support shaft is supported by the upper stage
  • the universal caster is characterized in that it is arranged to be shifted in the horizontal direction from the shaft, and is also arranged to be shifted in the horizontal direction from a vertical line passing through the wheel axis of the universal bracket.
  • the distance by which the lower support shaft is displaced from the upper support shaft is equal to the distance by which the lower support shaft is displaced from a vertical line passing through the wheel axis of the universal bracket.
  • the lower stage rotating portion includes a swivel plate to which the upper support shaft is attached eccentrically, a lower stage shaft support portion installed on the back surface of the swivel plate, and a lower stage support shaft on the lower stage shaft support portion.
  • a lower bracket that is fixed to the back surface of the swivel plate, a cover that is disposed on the back surface of the lower plate, the cover, Inserted in the center of the recess formed in the central part of the lower fixing plate and the cover, which is arranged between the head surface of the universal metal fixture and composed of a steel ball group that supports the rotation of the universal metal fixture.
  • the lower support shaft is inserted into the hole, the head surface of the universal bracket is rounded, the peripheral edge is raised to form a peripheral wall, and the steel ball group rolls between the peripheral wall and the back surface of the cover. Holds freely.
  • the lower stage rotating portion includes a revolving plate to which the upper stage supporting shaft is eccentrically attached, a ball support plate fixed to the back surface of the revolving plate, and a head surface of the universal bracket. It is composed of a group of steel balls arranged between the back surface of the ball support plate and the head surface of the universal bracket, and an annular groove is formed on the back surface of the ball support plate to accommodate the upper portion of the steel ball. An annular groove corresponding to the annular groove in which the lower part of the steel ball is accommodated is formed on the head surface of the universal metal fitting.
  • the upper stage rotating portion includes an upper stage fixing plate fixed to the bottom surface of the traveling body and a ball support plate that holds a number of steel balls between the upper stage fixing plate.
  • An annular groove is formed on the back surface of the upper fixed plate to accommodate the upper part of the steel ball, and an annular groove corresponding to the annular groove of the upper fixed plate in which the lower part of the steel ball is accommodated on the upper surface of the ball support plate.
  • the upper fixed plate and the ball support plate are formed by connecting their center portions via the upper support shaft, and the lower rotation portion is formed on the back surface of the ball support plate.
  • annular groove in which the upper part of the steel ball is accommodated an annular groove in which the lower part of the steel ball is formed in the head surface of the universal metal fitting, an annular groove on the back surface of the ball support plate, and an annular groove in the universal metal head surface
  • a group of steel balls that fit in between, and the ring of the ball support plate And the center portion of the annular groove of the universal fitting head surface and the center of the groove, and is connected via the lower supporting shaft.
  • the invention according to claim 6 for solving the above-mentioned problem is provided with two upper and lower rotating portions, and each of the upper support shaft of the upper rotating portion and the lower support shaft of the lower rotating portion.
  • the support portion is incorporated in one bearing block while being shifted in the horizontal direction, the upper support shaft of the upper rotation portion is fixed to the bottom surface of the traveling body, and the wheel is supported on the lower support shaft of the lower rotation portion.
  • a universal caster characterized in that a universal bracket is installed.
  • the universal caster according to the present invention includes two upper and lower rotating parts, and the lower rotating part is attached to the upper support shaft of the upper rotating part, thereby rotating the upper stage.
  • the lower rotation portion is configured to have a universal bracket for pivotally supporting the wheel, which is freely rotated by being attached to the lower support shaft of the lower rotation portion. Therefore, in a cart or the like that loads and transports heavy objects, even if a considerable weight load is applied to each free caster, the free swivel operation is performed independently in two steps up and down during traveling and turning. There is an effect that there is no risk of hindering the free turning of the vehicle. *
  • the traveling body provided with the caster is less likely to be shaken at the time of forward movement and backward movement. There is an effect that it is possible to travel without hindrance.
  • the structure is simple, the height of the upper part from the universal metal fitting can be suppressed, and there is an effect that it can be constructed thinner than a conventional general caster.
  • 1 is a perspective view of a first embodiment of a universal caster according to the present invention.
  • 1 is a partial cutaway view of a first embodiment of a universal caster according to the present invention. It is a figure which shows the effect
  • It is a partial section front view of a 2nd embodiment of a free caster concerning the present invention. It is a fragmentary sectional side view of 2nd Embodiment of the universal caster which concerns on this invention. It is a side view of 3rd Embodiment of the universal caster which concerns on this invention.
  • FIG. 11 is a partially omitted plan view of the free caster shown in FIG. 10. It is a fragmentary sectional side view of the modification of the universal caster shown in FIG.
  • FIG. 1 is a perspective view showing a first embodiment of a universal caster according to the present invention
  • FIG. 2 is a partially cutaway front view thereof.
  • the universal caster according to the present invention has two upper and lower parts. It has stepped rotation parts A and B, and is arranged so that the upper stage support shaft 3 of the upper stage rotation part A and the lower stage support shaft 6 of the lower stage rotation part B are displaced, and the lower stage support shaft 6 is It is characterized in that it is arranged so as to be shifted in the horizontal direction from a vertical line passing through the wheel axis of the universal bracket 7 attached to it.
  • the upper stage rotation part A is provided at the upper part fixing plate 1 fixed to the bottom surface of the traveling body 10 such as a carriage, the container part 2 fixed by screwing to the lower side of the upper stage fixing plate 1, and the center part of the container part 2.
  • the upper support shaft 3 to be arranged, the swivel plate 4 in which the lower end of the upper support shaft 3 is fixed at an eccentric position, and the rotating plate 2a that is installed on the upper support shaft 3 and rotates inside the container portion 2 are configured.
  • the Annular grooves are formed on the upper surface side and the lower surface side of the rotating plate 2a, and a large number of steel balls 2b, 2c that support the rotation of the rotating plate 2a are fitted into the annular grooves.
  • the rotating plate 2a and the upper support shaft 3 fixed to the rotating plate 2a are supported by the steel balls 2b and 2c arranged on the upper and lower surfaces of the rotating plate 2a, and are rotatable in the horizontal direction.
  • the lower stage rotation part B is composed of a lower stage shaft support part installed on the back surface of the swivel plate 4 and a universal bracket 7 which is pivotably attached to the lower stage shaft support part via the lower stage support shaft 6. It is pivotally supported at the lower end of the universal bracket 7.
  • the lower shaft support portion is disposed between the lower fixing plate 5 fixed to the back surface of the swivel plate 4, the cover 5 a disposed on the back surface of the lower fixing plate 5, and the cover 5 a and the head surface of the universal bracket 7. And a large number of steel balls 5b that support the rotation of the universal metal fitting 7.
  • the central part of the lower fixing plate 5 and the cover 5a is recessed, and the center is opened to form a lower support shaft 6 insertion hole.
  • the head portion of the lower support shaft 6 does not hit the back surface of the swivel plate 4 because it fits in the recess in the center of the lower support plate 5.
  • the head surface of the universal bracket 7 is formed in a circular shape, the periphery is raised (the periphery wall 7a), and the steel ball 5b is configured to be able to roll between the back surface of the cover 5a.
  • the contact surface of the steel ball 5b in the peripheral wall 7a is a curved surface corresponding to the steel ball 5b.
  • the peripheral edge portion of the cover 5a extends downward, and is formed so as to cover the head surface of the universal bracket 7 with a gap therebetween.
  • the universal metal fitting 7 is supported by the group of steel balls 5b disposed between the head surface and the cover 5a, and is rotatable in the horizontal direction around the lower support shaft 6.
  • the lower support shaft 6 of the lower rotating portion B as well as staggered from the upper support shaft 3 of the upper pivot portion A at a distance D 2 horizontal, the wheel axle 9 of the universal fitting 7 It is offset from the vertical line at a distance D 1 horizontal direction passing through, the distance D 1 and the distance D 2 is made equal.
  • the direction change following the traveling of the traveling body of the universal bracket 7 that pivotally supports the wheel 8 becomes the smoothest.
  • the lower stage rotating part B freely rotates in the horizontal direction with respect to the upper stage rotating part A via the upper stage support shaft 3, and the universal bracket 7 that supports the wheel 8 is It pivots freely in the horizontal direction via the lower support shaft 6. Therefore, when this free caster is used for a traveling body such as a carriage for loading and transferring heavy objects, even if a considerable weight load is applied to each free caster, it freely turns in each of the upper and lower stages, and the wheel 8 is moved. Since the direction of the pivotable metal fitting 7 can be changed in the moving direction of the traveling body without any difficulty, there is no problem in traveling and turning of the traveling body.
  • FIG. 3 shows a case where the wheels 8 attached to the four corners of the traveling body 10 are positioned on the traveling direction side indicated by the arrow.
  • the upper support shaft 3, the lower support shaft 6, and the wheel The center of the axis 9 is in a straight line.
  • each wheel 8 tilts in one direction (this direction depends on the difference in force applied to the left and right sides of the traveling body 10), and the lower support shaft. 6 is displaced in the direction opposite to the inclination direction of the wheel 8 (FIGS. 4a and 4b).
  • the wheel 8 moves backward relative to the traveling body 10 on the straight line.
  • the center of the wheel shaft 9 always moves back and forth on a fixed line corresponding to the direction of the traveling body 10 when the traveling body 10 moves forward and backward. This means that the traveling body 10 does not swing sideways when moving forward and backward. Therefore, the traveling body 10 including the universal caster can travel in a narrow space without any trouble.
  • FIGS. 5 and 6 a second embodiment shown in FIGS. 5 and 6 will be described.
  • This second embodiment is a simplification of the first embodiment described above.
  • the upper stage support shaft 3 of the upper stage rotation part A is pivotally supported by the radial ball bearing 21, and the lower stage rotation part B is It is quite thin. That is, the lower stage rotation part B is configured by fixing the ball support plate 22 to the back surface of the swivel plate 4 and arranging a large number of steel balls 23 between the ball support plate 22 and the head surface of the universal bracket 7.
  • annular groove 24 in which the upper part of the steel ball 23 is accommodated is formed on the back surface of the ball support plate 22, and an annular groove 25 corresponding to the annular groove 24 in which the lower part of the steel ball 23 is accommodated is formed in the head surface of the free metal fitting 7. Further, the head portion of the lower support shaft 6 is flat so as to be accommodated in a space formed between the turning plate 4 and the ball support plate 22 by the annular groove 24 of the ball support plate 22.
  • the lower stage rotating part B freely rotates in the horizontal direction with respect to the upper stage rotating part A via the upper stage support shaft 3, and the universal bracket 7 that pivotally supports the wheel 8 is Rotate freely in the horizontal direction via the lower support shaft 6.
  • the positional relationship of the upper stage support shaft 3, the lower stage support shaft 6, and the wheel shaft 9 in this embodiment also conforms to the above embodiment.
  • the third embodiment shown in FIGS. 7 to 9 is intended to suppress the height further lower than in the case of the second embodiment, and the upper stage rotation portion A in this embodiment is
  • the upper stage fixing plate 31 is fixed to the bottom surface of the traveling body 10 such as a carriage, and the ball support plate 32 holds a number of steel balls 33 between the upper stage fixing plate 31.
  • the upper fixing plate 31 has substantially the same configuration as the ball support plate 22 in the second embodiment, and an annular groove 34 in which the upper part of the steel ball 33 is accommodated is formed on the back surface, and an outer edge of the annular groove 34 is formed. Is fixed to the bottom surface of the traveling body 10. An annular groove 35 corresponding to the annular groove 34 in which the lower part of the steel ball 33 is accommodated is formed on the upper surface of the ball support plate 32.
  • the center part of the upper stage fixing plate 31 and the ball support plate 32 is connected via the upper stage support shaft 3, and the ball support plate 32 rotates with respect to the upper stage fixing plate 31 fixed to the bottom surface of the traveling body 10. Be free.
  • the lower stage rotation part B includes an annular groove 44 formed on the back surface of the ball support plate 32 in which the upper part of the steel ball 43 is accommodated, and an annular groove formed on the head surface of the universal bracket 7 in which the lower part of the steel ball 43 is accommodated. 45. Then, the central portion of the annular groove 44 of the ball support plate 32 and the central portion of the annular groove 45 of the free metal 7 head are connected via a lower support shaft 6 having a flat head, It becomes rotatable about the support shaft 6.
  • the lower stage rotating part B freely rotates in the horizontal direction with respect to the upper stage rotating part A via the upper stage support shaft 3 and also supports the wheel 8.
  • the universal bracket 7 freely turns in the horizontal direction via the lower support shaft 6.
  • the positional relationship of the upper stage support shaft 3, the lower stage support shaft 6, and the wheel shaft 9 in this embodiment also conforms to the above embodiment.
  • the height of the upper part from the universal bracket 7 is substantially equal to the sum of the heights of the upper fixing plate 31 and the ball support plate 32. Therefore, it is considerably thinner than a conventional general free caster.
  • the universal caster shown therein includes two upper and lower rotating parts A and B, and the upper support shaft 3 of the upper rotating part A and the lower support shaft 6 of the lower supporting shaft 6 of the lower rotating part B are respectively supported. It is incorporated in one bearing block 41 while being shifted in the horizontal direction.
  • the bearing block 41 is made of metal or hard resin, and recessed portions 42 and 43 for assembling the bearings are formed on the upper surface and the lower surface so as to be shifted from each other in the horizontal direction, and the upper support shaft 3 is pivotally supported in the recessed portion 42.
  • a bearing 44 is incorporated, and a bearing 45 that supports the lower support shaft 6 is incorporated in the recess 43.
  • An air vent hole 46 is formed on the bottom surface of each of the recesses 42 and 43 so as to pass out to the opposite surface. The air vent hole 46 is for releasing internal pressure when the upper support shaft 3 and the lower support shaft 6 are assembled to the bearings 44 and 45 in the bearing block 41.
  • the upper stage support shaft 3 is fixed to the bottom surface of the traveling body 10 via the upper stage fixing plate 1 (FIGS. 10 to 12) or by screwing directly (FIG. 13).
  • a universal bracket 7 that supports the wheel is installed on the lower support shaft 6.
  • the bearing block 41 freely pivots in the horizontal direction around the upper support shaft 3, and the universal bracket 7 that supports the wheel 8 freely moves in the horizontal direction via the lower support shaft 6.
  • the positional relationship among the upper support shaft 3, the lower support shaft 6 and the wheel shaft 9 be the same as that in the above embodiment.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Handcart (AREA)

Abstract

La roulette à orientation libre de l'invention est équipée de parties rotation à deux niveaux supérieur/inférieur. La partie rotation de niveau inférieur est libre de tourner par rapport à la partie rotation de niveau supérieur du fait de son installation sur un axe de support de niveau supérieur de ladite partie rotation de niveau supérieur. Un accessoire à orientation libre autorisant le pivotement d'une roue est libre de tourner par rapport à ladite partie rotation de niveau inférieur du fait de son installation sur un axe de support de niveau inférieur de ladite partie rotation de niveau inférieur. Ledit axe de support de niveau inférieur est disposé de manière décalée dans la direction horizontale vis-à-vis dudit axe de support de niveau supérieur, et est également disposé de manière décalée dans la direction horizontale vis-à-vis d'une ligne verticale passant par un axe de roue dudit accessoire à orientation libre. La distance selon laquelle l'axe de support de la partie rotation de niveau inférieur est décalé vis-à-vis de l'axe de support de la partie rotation de niveau supérieur, et distance selon laquelle l'axe de support de la partie rotation de niveau inférieur est décalé vis-à-vis de la ligne verticale passant par l'axe de roue de l'accessoire à rotation libre, sont égales.
PCT/JP2013/057178 2012-07-17 2013-03-14 Roulette à orientation libre WO2014013753A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2014525731A JP6129172B2 (ja) 2012-07-17 2013-03-14 自在キャスター

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012158780 2012-07-17
JP2012-158780 2012-07-17

Publications (1)

Publication Number Publication Date
WO2014013753A1 true WO2014013753A1 (fr) 2014-01-23

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PCT/JP2013/057178 WO2014013753A1 (fr) 2012-07-17 2013-03-14 Roulette à orientation libre

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JP (1) JP6129172B2 (fr)
WO (1) WO2014013753A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104070926A (zh) * 2014-05-27 2014-10-01 太仓兴锋脚轮有限公司 一种万向轮
CN104149546A (zh) * 2014-08-12 2014-11-19 太仓兴锋脚轮有限公司 脚轮
CN104802899A (zh) * 2015-05-04 2015-07-29 太仓市车中宝休闲用品有限公司 新型儿童乐摇车
CN109110004A (zh) * 2018-11-01 2019-01-01 苏州牧星智能科技有限公司 一种机器人底盘结构
CN109159625A (zh) * 2018-11-01 2019-01-08 苏州牧星智能科技有限公司 一种具有双平行回转轴的万向轮机构
CN112297707A (zh) * 2019-07-26 2021-02-02 杭州海康机器人技术有限公司 万向轮以及包括其的运输装置
CN114987636A (zh) * 2022-08-05 2022-09-02 泉州迪特工业产品设计有限公司 一种agv小车
CN117222531A (zh) * 2021-11-01 2023-12-12 李宪文 180度反转顺畅的脚轮

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200492330Y1 (ko) * 2019-04-18 2020-09-18 최미림 캐스터

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JP3121337U (ja) * 2006-02-17 2006-05-18 皇冠皮件工業股▲分▼有限公司 スーツケースに用いるキャスター
JP2012051452A (ja) * 2010-09-01 2012-03-15 Yuei Caster Co Ltd キャスター

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Publication number Priority date Publication date Assignee Title
JPS477463Y1 (fr) * 1968-03-16 1972-03-21
JPH04961Y2 (fr) * 1985-05-31 1992-01-14
JPS62247904A (ja) * 1986-04-18 1987-10-29 Osaka Taiyuu:Kk キヤスタ−
JPS63170102A (ja) * 1987-01-09 1988-07-14 Res Dev Corp Of Japan キヤスタ
JPH0751361Y2 (ja) * 1987-06-30 1995-11-22 神鋼電機株式会社 無人搬送車の遊輪機構
JPH01136001U (fr) * 1988-03-07 1989-09-18
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JP2012051452A (ja) * 2010-09-01 2012-03-15 Yuei Caster Co Ltd キャスター

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104070926A (zh) * 2014-05-27 2014-10-01 太仓兴锋脚轮有限公司 一种万向轮
CN104149546A (zh) * 2014-08-12 2014-11-19 太仓兴锋脚轮有限公司 脚轮
CN104802899A (zh) * 2015-05-04 2015-07-29 太仓市车中宝休闲用品有限公司 新型儿童乐摇车
CN109110004A (zh) * 2018-11-01 2019-01-01 苏州牧星智能科技有限公司 一种机器人底盘结构
CN109159625A (zh) * 2018-11-01 2019-01-08 苏州牧星智能科技有限公司 一种具有双平行回转轴的万向轮机构
CN112297707A (zh) * 2019-07-26 2021-02-02 杭州海康机器人技术有限公司 万向轮以及包括其的运输装置
CN117222531A (zh) * 2021-11-01 2023-12-12 李宪文 180度反转顺畅的脚轮
CN117222531B (zh) * 2021-11-01 2024-03-19 李宪文 180度反转顺畅的脚轮
JP7554524B2 (ja) 2021-11-01 2024-09-20 ムン イ、ホン １８０度逆回転が円滑なキャスター
CN114987636A (zh) * 2022-08-05 2022-09-02 泉州迪特工业产品设计有限公司 一种agv小车

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JPWO2014013753A1 (ja) 2016-06-30
JP6129172B2 (ja) 2017-05-17

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