WO2011080834A1 - Power transmission device - Google Patents
Power transmission device Download PDFInfo
- Publication number
- WO2011080834A1 WO2011080834A1 PCT/JP2009/071800 JP2009071800W WO2011080834A1 WO 2011080834 A1 WO2011080834 A1 WO 2011080834A1 JP 2009071800 W JP2009071800 W JP 2009071800W WO 2011080834 A1 WO2011080834 A1 WO 2011080834A1
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- WIPO (PCT)
- Prior art keywords
- ball
- pulley
- ball member
- chain
- members
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/06—Gearings for conveying rotary motion by endless flexible members with chains
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
- F16G1/00—Driving-belts
- F16G1/28—Driving-belts with a contact surface of special shape, e.g. toothed
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
- F16G13/00—Chains
- F16G13/18—Chains having special overall characteristics
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
- F16G9/00—Ropes or cables specially adapted for driving, or for being driven by, pulleys or other gearing elements
Definitions
- the present invention relates to a power transmission device, and more particularly to a power transmission device configured to transmit power between pulleys by a ball chain.
- a power transmission device that wraps an endless chain or the like between pulleys to transmit power is generally used in, for example, a conveyor for transporting articles.
- a large number of roller bodies are arranged so that their axes are parallel to each other, and an article conveyance path extending in a direction orthogonal to the axes is formed on the roller body group.
- each roller body is provided with two or more pulleys, and a chain is wound around pulleys of two roller bodies adjacent to each other in the article conveyance path direction and driven by a motor.
- the article moves on the article conveyance path.
- a roller chain or a bushless chain and a sprocket wheel which can transmit relatively large power and are frequently used in bicycles, are used.
- a ball chain formed by connecting a large number of ball members with link members is known.
- Japanese Utility Model Laid-Open No. 63-34291 discloses a technique of using a ball chain as a blind opening / closing mechanism. .
- the ball member but also the link member are made of metal, and the power for driving the roller body group constituting the article transport path instead of the above-described roller chain or the like. It has been found that the use of the transmission device reduces the above-mentioned dangers and costs and facilitates maintenance, but has poor durability.
- the present invention is to provide a power transmission device using a metal ball chain with good durability.
- the first pulley, the second pulley, and the first pulley and the second pulley for transmitting the rotational power of the first pulley to the second pulley.
- a ball chain wound around a pulley, and the ball chain includes a plurality of metal ball-shaped ball members and a metal link member that connects two adjacent ball members,
- the ball member has two connection holes for connecting to the link member on both sides in one diameter direction, and the link member is a linear bar-like link bar that can be inserted into and removed from the ball member through the connection hole, and the link
- a ball engaging portion that is provided at both ends of the bar and inside the ball member, and has a retaining end dimension that cannot pass through the connecting hole, and the first and second pulleys engage with the ball member.
- a plurality of grooves in the outer circumferential direction; Power transmission device is set smaller than the pitch between two ball members adjacent to each other in the ball chain the pitch between the two balls engaging grooves adjacent to each other in the circumfer
- the pitch between ball members refers to the distance between the centers of two adjacent ball members
- the pitch between ball engagement grooves refers to the distance between the centers of two adjacent ball engagement grooves.
- the pitch between adjacent meshing portions is set to be equal to the pitch between adjacent meshing portions.
- the pitch between the two ball engaging grooves adjacent to each other in the circumferential direction of the first and second pulleys is set smaller than the pitch between the two adjacent ball members in the ball chain.
- the link bar of one link member has two balls connected to the link member.
- the pitch between the ball engaging grooves is smaller than the pitch between the ball members, the tolerance of variation in the pitch between the ball members is increased as compared to the case where both are made the same, and the tolerance of variation in the outer diameter of the ball member is also increased. And the ball chain can be manufactured easily.
- the degree to which the pitch between the ball engaging grooves is made smaller than the pitch between the ball members can be 1 to 20%, preferably only 1 to 5%, etc.
- Each of the two link members connected to one ball member is determined so that the retaining end portions in the ball member do not contact each other in the ball member.
- the pitch between the ball members, the pitch between the ball engagement grooves, and the extent to which the latter is made smaller than the former change depending on the diameter of the pulley and the number of the ball engagement grooves. There is a tendency that the degree of decreasing is increased, and even when the number of ball engaging grooves increases, the degree of decreasing the pitch between the ball engaging grooves tends to increase.
- one ball member in the ball chain transmitting the rotational power of the first pulley to the second pulley is one ball engagement of the first pulley or the second pulley.
- the one ball member is rotated forward with a front ball member engaged with a ball engaging groove adjacent to the one ball engaging groove forward in the rotation direction.
- the link member adjacent to the rear ball member at the rear in the direction and connecting between the one ball member and the front ball member has a link bar extending from the connection hole to the one ball member and / or the front ball.
- the stopper end is pulled away from the inner peripheral surface of the one ball member and / or the front ball member and pulled toward the center side of the one ball member and / or the front ball member.
- Bo Link members for connecting the seal member and the rear of the ball member, the retaining end is in contact with the inner peripheral surface of one ball member and the rear of the ball member.
- the pitch between the ball engaging grooves in the first and second pulleys around which the metal ball chain is wound is made smaller than the pitch between the ball members in the ball chain, so that The two ball members that engage with one ball engaging groove may correspond to the narrow pitch between the engaging grooves, because the link bar of the link member that connects between them enters the ball member through the connecting hole.
- the link member is not pulled from both ball members. Therefore, the durability of the power transmission device using the ball chain and the first and second pulleys can be improved, and it is safer and more cost-effective than the conventional power transmission device using a roller chain, a sprocket wheel or the like. Thus, a power transmission device that can be easily maintained can be realized.
- FIG. 1 is a perspective view schematically showing a conveyor partially incorporating a power transmission device according to an embodiment of the present invention.
- FIG. 2 is an explanatory cross-sectional view schematically showing an engagement state between the ball chain and the pulley.
- FIG. 3 is an enlarged explanatory view of a part of FIG.
- FIG. 1 is a perspective view schematically showing a part of a conveyor 1 incorporating a power transmission device 10 according to an embodiment of the present invention.
- the conveyor 1 has a large number of cylindrical roller bodies 2a, 2b, 2c arranged so that their respective axes are parallel to each other (only three roller bodies in FIG. 1 are spaced apart from each other for convenience).
- Left and right side plates 4 that support both ends of the rotating shafts 3a, 3b, and 3c of the roller bodies 2a, 2b, and 2c via bearings (not shown) (only one side plate in FIG. 1).
- a power transmission device 10 for transmitting the rotational power of the roller body 2a that is rotationally driven by a motor (not shown) to the roller bodies 2b and 2c.
- the roller bodies 2a, 2b, and 2c form an article conveyance path extending in a direction perpendicular to the axis on these roller body groups, and the articles (see FIG. (Not shown) moves in the direction of arrow B on the article conveyance path.
- the power transmission device 10 includes a first pulley 11a (driving side pulley) provided at one axial end of the roller body 2a and a second pulley (driven pulley) provided at one axial end of the roller body 2b. ) 11b and an annular first ball chain 20a wound around the first pulley 11a and the second pulley 11b as basic units.
- the power transmission device 10 has the same basic unit between the roller bodies 2b and 2c as the roller bodies 2a and 2b. That is, the roller body 2b has a third pulley (adjacent to the second pulley 11b).
- roller body 2c is provided with a fourth pulley (driven pulley) 11d, and the second ball chain 20b is wound around the third and fourth pulleys 11c, 11d.
- the roller body 2a is provided with a fifth pulley 11e, and the fifth pulley 11e is also a roller between the roller body 2a and a pulley of another roller body (not shown) adjacent downstream in the B direction.
- a chain is stretched over, and two pulleys and a roller chain are also added between the roller body 2c and another roller body (not shown) adjacent upstream in the B direction.
- the rotation of the roller body 2a by a motor (not shown) is transmitted from the first pulley 11a to the second pulley 11b via the first ball chain 20a, and the roller body 2b rotates.
- the rotation of the body 2b is transmitted from the third pulley 11c to the fourth pulley 11d via the second ball chain 20b, and the roller body 2c rotates.
- the first, second, third, and fourth pulleys 11a, 11b, 11c, and 11d are collectively referred to as the pulley 11, and the first and second ball chains 20a and 20b are collectively referred to as the ball chain 20.
- the ball chain 20 includes a large number of metal hollow sphere-shaped ball members 21 and a metal link member 23 that connects two adjacent ball members 21.
- the ball member 21 has two connection holes 22 for connecting to the link member 23 on both sides in one diameter direction.
- the link member 23 includes a straight bar-shaped link bar 24 and retaining end portions 25 provided at both ends of the link bar.
- the diameter of the link bar 24 is smaller than the diameter of the connecting hole 22 of the ball member 21, so that the link bar 24 can enter and leave the connecting hole 22.
- the retaining end portion 25 is provided inside the ball member 21, and the diameter of the retaining end portion 25 is larger than the diameter of the connecting hole 22, so that the retaining end portion 25 cannot pass through the connecting hole 22.
- the pulley 11 has a large number of ball engaging grooves 12 that receive the ball members 21 of the ball chain 20 at a predetermined pitch (hereinafter referred to as “groove pitch”) in the outer circumferential direction.
- the groove pitch is set slightly smaller than the pitch between two adjacent ball members 21 in the ball chain 20 (hereinafter referred to as “ball pitch”), for example, by about 2% or 3%.
- the ball engaging groove 12 includes an open end 13 having a diameter larger than the diameter of the ball member 21 and a groove bottom 14 that matches the bottom of the ball member 21, and the ball member 21 is completely received in the ball engaging groove 12.
- gaps 15 are formed on both sides of the ball member 21 in the ball engaging groove 12, and the top of the ball member 21 protrudes from the open end 13 to the outside of the groove.
- the adjacent ball engaging grooves 12 are connected by a link groove having a size larger than the diameter of the link bar 24 of the link member 23 and smaller than the ball engaging groove 12.
- the ball pitch of the ball chain 20 is defined as the dimension between the centers of the two adjacent ball members 21, and the retaining end portions 25 on both sides of the link member 23 between the two adjacent ball members 21 are respectively It can be defined as the sum of the dimension between the inner peripheral surfaces of the ball members 21 and twice the radius of the inner diameter of the ball member 21 in contact with the inner peripheral surfaces of the ball members 21, and the groove pitch is larger than this sum. Set small.
- the ball member 21 of the ball chain 20 is successively engaged with the ball engagement groove 12 of the pulley 11 rotating in the direction A during the operation of the conveyor 1.
- the rotation of the pulley 11 is transmitted to the adjacent pulley, that is, the roller body via the ball chain 20.
- the ball member 21 of the ball chain 20 is first completely in a ball engagement groove (hereinafter referred to as “vertex ball engagement groove”) 12t located at the top of the pulley 11 (position at 12 o'clock in FIG. 2). And then forward in the A direction (rotational direction).
- verex ball engagement groove hereinafter referred to as “vertex ball engagement groove”
- the ball engaging groove that completely receives the ball member 21 first is not the apex but the top.
- the link bar 24 of the link member 23 that connects the two members enters the inside of at least one of the ball members 21 on both sides from the connection hole 22, and at least one of the retaining end portions 25 on both sides separates from the inner peripheral surface of the ball member 21 to 21 is drawn to the center side. Thereby, the link member 23 can respond to the reduced groove pitch without being pulled by the ball members 21 on both sides.
- the transmission of power from the pulley 11 to the ball chain 20 is substantially transmitted through the apex ball engaging groove 12t and the ball member (hereinafter referred to as “vertex ball member”) 21t engaged with the apex ball engaging groove 12t. To be done.
- the link member 23 that connects the apex ball member 21t and the ball member (hereinafter referred to as “front ball member”) 21t + 1 that engages with the apex ball engagement groove 12t and the ball engagement groove 12t + 1 adjacent to the apex ball engagement groove 12t in the front in the A direction
- the link bar 24 enters the apex ball member 21t and / or the front ball member 21t + 1 from the connecting hole 22, and at least one of the retaining end portions 25 on both sides is separated from the inner peripheral surface of the apex ball member 21t and / or the front ball member 21t + 1.
- the top ball member 21t and / or the front ball member 21t + 1 is drawn into the center side.
- a ball member (not completely received at this time) that is going to engage with the apex ball member 21t and the ball engagement groove 12t-1 adjacent to the apex ball engagement groove 12t at the rear in the A direction.
- the link member 23 that connects 21t-1 (hereinafter referred to as "rear ball member") has the retaining end portions 25 on both sides thereof in contact with the inner peripheral surfaces of the apex ball member 21t and the rear ball member 21t-1.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
- Pulleys (AREA)
Abstract
Description
2a、2b、2c ローラ体
10 動力伝達装置
11 滑車
11a 第1の滑車
11b 第2の滑車
12 ボール係合溝
12t 頂点ボール係合溝
20 ボールチェーン
20a 第1のボールチェーン
20b 第2のボールチェーン
21 ボール部材
21t 頂点ボール部材
21t+1 前方ボール部材
21t-1 後方ボール部材
22 連結孔
23 リンク部材
24 リンクバー
25 抜止端部 DESCRIPTION OF
Claims (2)
- 第1の滑車(11a)と、第2の滑車(11b)と、第1の滑車(11a)の回転動力を第2の滑車(11b)に伝達するために第1の滑車(11a)及び第2の滑車(11b)に巻き掛けられるボールチェーン(20)とを備え、
前記ボールチェーン(20)は、金属製で中空球形状の多数のボール部材(21)と、隣り合う二つのボール部材(21)間を連結する金属製のリンク部材(23)とを有し、
前記ボール部材(21)は、リンク部材(23)と連結するための連結孔(22)を一直径方向の両側に二つ有し、リンク部材(23)は、前記連結孔(22)を通ってボール部材(21)に対し出し入れ可能な直線棒状のリンクバー(24)と、リンクバー(24)の両端でかつボール部材(21)の内部に設けられ、前記連結孔(22)を通過不能な寸法の抜止端部(25)とを有し、
前記第1及び第2の滑車(11a、11b)は、前記ボール部材(21)と係合するボール係合溝(12)を外周周方向に多数有し、前記第1及び第2の滑車(11a、11b)の周方向に隣り合う二つのボール係合溝(12)間のピッチを前記ボールチェーン(20)において隣り合う二つのボール部材(21)間のピッチよりも小さく設定した動力伝達装置。 The first pulley (11a), the second pulley (11b), and the first pulley (11a) and the second pulley (11a) for transmitting the rotational power of the first pulley (11a) to the second pulley (11b). A ball chain (20) wound around two pulleys (11b),
The ball chain (20) has a large number of ball members (21) made of metal and having a hollow sphere shape, and a metal link member (23) for connecting two adjacent ball members (21),
The ball member (21) has two connecting holes (22) for connecting to the link member (23) on both sides in one diameter direction, and the link member (23) passes through the connecting hole (22). A straight bar-like link bar (24) that can be inserted into and removed from the ball member (21), and provided at both ends of the link bar (24) and inside the ball member (21), and cannot pass through the connecting hole (22). A non-removable end (25)
The first and second pulleys (11a, 11b) have a large number of ball engaging grooves (12) that engage with the ball members (21) in the outer circumferential direction, and the first and second pulleys ( 11a, 11b) The power transmission device in which the pitch between the two ball engaging grooves (12) adjacent in the circumferential direction is set smaller than the pitch between the two adjacent ball members (21) in the ball chain (20). . - 前記第1の滑車(11a)の回転動力を第2の滑車(11b)に伝達している前記ボールチェーン(20)における一のボール部材(21t)が第1の滑車(11a)又は第2の滑車(11b)の一のボール係合溝(12t)に最初に完全に受け入れられた時点において、
前記一のボール部材(21t)は、回転方向前方で前記一のボール係合溝(12t)に隣り合うボール係合溝(12t+1)に係合している前方のボール部材(21t+1)と、回転方向後方における後方のボール部材(21t-1)とに隣り合い、
前記一のボール部材(21t)と前記前方のボール部材(21t+1)との間を連結するリンク部材(23)は、そのリンクバー(24)が連結孔(22)から一のボール部材(21t)及び/又は前方のボール部材(21t+1)内に入り込むと共に、抜止端部(25)が一のボール部材(21t)及び/又は前方のボール部材(21t+1)の内周面から離れて一のボール部材(21t)及び/又は前方のボール部材(21t+1)の中心側へと引き込まれ、
前記一のボール部材(21t)と前記後方のボール部材(21t-1)との間を連結するリンク部材(23)は、その抜止端部(25)が一のボール部材(21t)及び後方のボール部材(21t-1)の内周面に接触する請求項1の動力伝達装置。 One ball member (21t) in the ball chain (20) transmitting the rotational power of the first pulley (11a) to the second pulley (11b) is the first pulley (11a) or the second pulley. When it is first fully received in one ball engaging groove (12t) of the pulley (11b),
The one ball member (21t) rotates in front of the ball member (21t + 1) engaged with the ball engagement groove (12t + 1) adjacent to the one ball engagement groove (12t) in the forward direction of rotation. Next to the rear ball member (21t-1) in the rear direction,
The link member (23) for connecting the one ball member (21t) and the front ball member (21t + 1) has a link bar (24) extending from the connection hole (22) to the one ball member (21t). And / or the ball member (21t + 1) entering the front ball member (21t + 1), and the stopper end (25) is separated from the inner peripheral surface of the one ball member (21t) and / or the front ball member (21t + 1). (21t) and / or pulled toward the center of the front ball member (21t + 1),
The link member (23) connecting between the one ball member (21t) and the rear ball member (21t-1) has a retaining end portion (25) and the rear ball member (21t). The power transmission device according to claim 1, wherein the power transmission device contacts the inner peripheral surface of the ball member (21t-1).
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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JP2011547217A JP5275477B2 (en) | 2009-12-28 | 2009-12-28 | Power transmission device |
PCT/JP2009/071800 WO2011080834A1 (en) | 2009-12-28 | 2009-12-28 | Power transmission device |
CN200980163218.6A CN102713350B (en) | 2009-12-28 | 2009-12-28 | Power transmission device |
Applications Claiming Priority (1)
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PCT/JP2009/071800 WO2011080834A1 (en) | 2009-12-28 | 2009-12-28 | Power transmission device |
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PCT/JP2009/071800 WO2011080834A1 (en) | 2009-12-28 | 2009-12-28 | Power transmission device |
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CN (1) | CN102713350B (en) |
WO (1) | WO2011080834A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
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CN103195868A (en) * | 2013-04-17 | 2013-07-10 | 吕文杰 | Steel wire transmission chain |
WO2020209355A1 (en) * | 2019-04-12 | 2020-10-15 | 立川ブラインド工業株式会社 | Ball chain and shade device |
JP2021067335A (en) * | 2019-10-25 | 2021-04-30 | 立川ブラインド工業株式会社 | Ball chain |
GR1010323B (en) * | 2021-10-26 | 2022-10-14 | Λεωνιδας Σπυριδωνα Θεοχαρης | Continuous -movement revs regulator for pulleys interconnection via chain of spheres |
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CN104196961A (en) * | 2014-09-23 | 2014-12-10 | 湖南海诺电梯有限公司 | 'Rope-ball' pulling chain |
CN110671470B (en) * | 2019-09-29 | 2021-03-05 | 梁恩 | Transmission chain |
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
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CN103195868A (en) * | 2013-04-17 | 2013-07-10 | 吕文杰 | Steel wire transmission chain |
WO2020209355A1 (en) * | 2019-04-12 | 2020-10-15 | 立川ブラインド工業株式会社 | Ball chain and shade device |
CN113631792A (en) * | 2019-04-12 | 2021-11-09 | 立川窗饰工业株式会社 | Bead chain and shielding device |
EP3954859A4 (en) * | 2019-04-12 | 2022-06-22 | Tachikawa Corporation | Ball chain and shade device |
JP2021067335A (en) * | 2019-10-25 | 2021-04-30 | 立川ブラインド工業株式会社 | Ball chain |
JP7502013B2 (en) | 2019-10-25 | 2024-06-18 | 立川ブラインド工業株式会社 | Ball Chain |
GR1010323B (en) * | 2021-10-26 | 2022-10-14 | Λεωνιδας Σπυριδωνα Θεοχαρης | Continuous -movement revs regulator for pulleys interconnection via chain of spheres |
Also Published As
Publication number | Publication date |
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JP5275477B2 (en) | 2013-08-28 |
CN102713350B (en) | 2015-06-24 |
CN102713350A (en) | 2012-10-03 |
JPWO2011080834A1 (en) | 2013-05-09 |
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