WO2020004348A1 - Chain and chain drive device - Google Patents

Chain and chain drive device Download PDF

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Publication number
WO2020004348A1
WO2020004348A1 PCT/JP2019/025008 JP2019025008W WO2020004348A1 WO 2020004348 A1 WO2020004348 A1 WO 2020004348A1 JP 2019025008 W JP2019025008 W JP 2019025008W WO 2020004348 A1 WO2020004348 A1 WO 2020004348A1
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WO
WIPO (PCT)
Prior art keywords
link
chain
links
rotation
linear structure
Prior art date
Application number
PCT/JP2019/025008
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French (fr)
Japanese (ja)
Inventor
晶 平井
智彦 大西
Original Assignee
株式会社椿本チエイン
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Filing date
Publication date
Application filed by 株式会社椿本チエイン filed Critical 株式会社椿本チエイン
Publication of WO2020004348A1 publication Critical patent/WO2020004348A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • B66F3/02—Devices, e.g. jacks, adapted for uninterrupted lifting of loads with racks actuated by pinions
    • 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
    • F16G13/20—Chains having special overall characteristics stiff; Push-pull chains
    • 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
    • F16H19/00—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion
    • F16H19/02—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion for interconverting rotary or oscillating motion and reciprocating motion

Definitions

  • the present disclosure comprises a plurality of links rotatably connected in series, wherein a second side opposite to the first side is bendable on a first side in a direction intersecting the series direction.
  • the side relates to a chain that is not bendable.
  • the present disclosure relates to a chain drive device including the chain.
  • a self-supporting chain unit disclosed in Patent Literature 1 is known as this type of chain driving device.
  • the self-supporting chain unit includes a drive guide means, and a self-supporting chain which is guided by the drive guide means, linearly fed out and driven.
  • the drive guide means has a drive sprocket for feeding out and pulling the self-supporting chain, a chain guide for defining a traveling path of the self-supported chain that has been drawn, and a cam guide having a cam groove.
  • a self-supporting chain is formed by connecting a plurality of chain blocks in a stackable and bendable manner.
  • Each chain block has a block body and a chain member provided on the block body.
  • a fulcrum for swingably supporting the link plate is provided on one side surface of the block body.
  • An engagement pin with which another link plate swings and engages is provided on the other side surface of the block body.
  • ⁇ ⁇ In the center of the link plate, there is provided an engagement opening which can be engaged with and disengaged from the engagement pin.
  • the link plate is provided with a cam roller that protrudes outward from the link plate. Then, a chain block having a link plate only on one side surface and a chain block having a link plate only on the other side surface are alternately connected to form a self-supporting chain.
  • Each link plate has an end contact portion and a swing regulating portion.
  • the end contact portion is formed at a position farther than an engaging pin provided on the block body with which the link plate engages.
  • An end contact portion of the link plate adjacent to the link plate on the fulcrum side contacts the swing restricting portion of each link plate.
  • Each link plate is engaged with the engaging pin, and when the end contact portion of the adjacent link plate contacts the swing regulation portion, the engagement state with the adjacent link plate is maintained. It is configured to:
  • each link plate is engaged with the engaging pin of the block body adjacent to the link plate. Further, at this time, the end contact portions of the adjacent link plates on the same side face are in contact with the swing regulating portions. Therefore, all link plates are fixed unless the lowermost link plate swings. Thereby, the engagement between the link plate and the engagement pin is maintained, and the engagement of only one link plate is not released, so that the entire self-supporting chain can be reliably fixed linearly.
  • An object of the present disclosure is to provide a chain and a chain driving device that can suppress bending of a linear structure formed by a plurality of links with a simple configuration.
  • a chain that solves the above-mentioned problem has a plurality of links arranged in series, and links adjacent in the series direction are rotatably connected to each other, and are provided on a first side in a direction intersecting the series direction.
  • a plurality of links are arranged so as to be linearly arranged to form a linear structure, and the rotation restriction of each link forming the linear structure is formed. The portion regulates the rotation of the engaged link toward the first side by engaging with another link that is disposed two or more links ahead of the link in the traveling direction.
  • each link forming the linear structure is restricted by the rotation restricting portions of the other links that are arranged at least two rearward in the traveling direction from the link. For this reason, it is possible to suppress the bending of the linear structure formed by the plurality of links with a simple configuration.
  • each link has a first latching portion, and each link is rotated by at least two links located rearward of the link in the traveling direction. It is preferable that the regulating portion has a second hook portion that can be hooked by the first hook portion.
  • the second hook of each link forming the linear structure is the first hook of the rotation restricting portion of the other link that is disposed at least two or more rearward in the traveling direction of the link. Hooked by the department. For this reason, bending of the linear structure formed by the plurality of links can be more reliably suppressed.
  • the rotation restricting portions of the links forming the linear structure are arranged at least two forwards in the traveling direction from the link.
  • the rotation of the other link toward the first side is restricted by a magnetic force.
  • each link forming the linear structure is caused by the magnetic force acting between the link and the rotation restricting portions of the other links that are arranged at least two rearward in the traveling direction of the link. Be regulated. For this reason, bending of the linear structure formed by the plurality of links can be suppressed with a simpler configuration.
  • each link includes a shaft portion and a bearing portion, and the two links that are adjacent in the serial direction are fitted to the shaft portion of one link so that the bearing portion of the other link can rotate. It is preferable that they are connected by the following.
  • the links can be rotatably connected without requiring a separate member such as a pin.
  • a chain driving device that solves the above-mentioned problem can accommodate the chain, a sprocket that meshes with the chain, and that can rotate in a first rotation direction and a second rotation direction opposite to the first rotation direction, and the chain.
  • Each link is moved in the traveling direction when the sprocket is rotated in the first rotation direction to form the linear structure, and the sprocket is moved in the second rotation direction. Is rotated in the retreating direction opposite to the traveling direction and is accommodated in the chain accommodating portion.
  • FIG. 2 is a perspective view showing the inside of the chain driving device.
  • FIG. 4 is a perspective view showing the chain driving device when the link forms a linear structure.
  • the perspective view when a link is seen from the upper side.
  • the perspective view when a link is seen from the lower side.
  • FIG. 8 is a perspective view showing a state where a plurality of links of FIG. 7 are connected in series to form a part of a chain.
  • the chain driving device 11 includes a pair of rectangular guide plates 12, a chain 13, and a pair of sprockets 14.
  • the pair of guide plates 12 are arranged in a case (not shown) and face each other.
  • the chain 13 is guided by a pair of guide plates 12.
  • the pair of sprockets 14 mesh with the chain 13 and are rotatable in a first rotation direction and a second rotation direction opposite to the first rotation direction.
  • the space between the pair of guide plates 12 constitutes a chain housing 15 that can house the chain 13.
  • Each guide plate 12 is formed with a circular accommodation hole 16 for accommodating the corresponding sprocket 14 and a guide groove 17 for guiding the chain 13 so as to pass through the guide plate 12.
  • the guide groove 17 extends so as to be curved in a substantially U-shape as a whole, and has a linear portion 17a.
  • the straight portion 17a extends straight in the vertical direction near the entrance and exit of the chain 13. That is, the guide groove 17 has a straight portion 17a and a curved portion 17b other than the straight portion 17a.
  • a part of the linear portion 17 a of the guide groove 17 is connected to a part of the peripheral edge of the accommodation hole 16. That is, the guide groove 17 and the accommodation hole 16 communicate with each other.
  • the sprocket 14 has the same thickness as the guide plate 12.
  • the pair of sprockets 14 are integrally rotatably connected to each other while being accommodated in the accommodation holes 16 of the pair of guide plates 12.
  • the pair of sprockets 14 are rotationally driven in a first rotation direction and a second rotation direction by a drive unit (not shown) having a motor, a speed reducer, and the like.
  • the first rotation direction corresponds to the counterclockwise direction in FIG. 1
  • the second rotation direction corresponds to the clockwise direction in FIG.
  • the chain 13 has a plurality of links 18 arranged in series. More specifically, the chain 13 has a configuration in which links 18 that are adjacent in a serial direction that is the longitudinal direction of the chain 13 are sequentially rotatably connected to each other by a cylindrical pin 19.
  • each link 18 is constituted by one component. Specifically, each link 18 includes a substantially block-shaped main body 20, a rotation restricting part 21, a pair of left and right cylindrical first bearings 22, and a cylindrical second bearing 23.
  • the rotation restricting portion 21 is formed at a rear end of the main body 20.
  • a pair of left and right first bearing portions 22 are formed at the upper front end of the main body portion 20.
  • the second bearing portion 23 is formed at the center in the left-right direction at the lower front end of the main body 20.
  • the first bearing portion 22 and the second bearing portion 23 both have axes extending in the left-right direction, and have the same outer diameter.
  • the interval between the pair of first bearing portions 22 is set to be slightly wider than the length of the second bearing portion 23.
  • the outer end surfaces of the pair of first bearing portions 22 in the left-right direction are flush with the left and right side surfaces of the main body 20, respectively.
  • the axis of the second bearing portion 23 of the upper link 18 and the axis of the pair of first bearing portions 22 of the lower link 18 are aligned.
  • the upper and lower two links 18 become the pair of first bearing portions 22, It is rotatably connected via the second bearing 23 and the pin 19. Therefore, the chain 13 is bendable to the pin 19 side which is the first side in one direction orthogonal (intersecting) to the serial direction, while being turned to the second side opposite to the first side. It cannot be bent to the restricting portion 21 side.
  • the pin 19 is non-rotatably fitted to the pair of first bearing portions 22 and rotatably fitted to the second bearing portion 23. Both ends of the pin 19 protrude beyond the pair of first bearing portions 22 in the axial direction of the pin 19. Both ends of the pin 19 are slidably inserted into the guide grooves 17 of the pair of guide plates 12, respectively, and are capable of meshing with the pair of sprockets 14, respectively.
  • each link 18 is guided along the guide groove 17 via the pin 19 by the pair of sprockets 14 being driven to rotate in the first rotation direction and the second rotation direction. While moving forward and backward. That is, each link 18 is moved in the traveling direction Z1 when the pair of sprockets 14 is rotationally driven in the first rotational direction, and is opposite to the traveling direction Z1 when the pair of sprockets 14 is rotationally driven in the second rotational direction. In the regression direction Z2.
  • each link 18 has a protruding portion 25 protruding above the main body portion 20 and a lower portion of the other link 18 formed below the protruding portion 25. And a cutout recess 26 that can accommodate the protrusion 25.
  • the notch 26 has a shape corresponding to the protrusion 25, and has left and right side surfaces and an upper surface. The front side of the notch 26 is closed by the rear surface 20 c of the main body 20. The rear and lower sides of the notch 26 are open.
  • the rear surface 20c of the main body 20 is inclined such that the upper end is located rearward from the lower end.
  • a wedge-shaped second engaging portion 27 projecting rearward is formed at the center of the lower end of the rear surface 20c of the main body 20.
  • the lower surface 27a of the second hooking portion 27 is flush with the lower surface 20a of the main body 20.
  • the upper surface 27b of the second engaging portion 27 is inclined such that the height decreases toward the rear.
  • the protruding portion 25 has a substantially block shape. At an upper end of the protruding portion 25, a first latch portion 28 protruding forward is formed.
  • the lower surface 28a of the first engaging portion 28 is inclined such that the height increases as it goes forward.
  • the inclination angle of the lower surface 28a of the first latching portion 28 and the inclination angle of the upper surface 27b of the second latching portion 27 are the same.
  • the upper surface 28b of the first hook portion 28 is formed by a horizontal plane.
  • the front surface 25a of the protruding portion 25 is inclined such that the upper end is located rearward of the lower end.
  • the inclination angle of the front surface 25a of the protrusion 25 and the inclination angle of the rear surface 20c of the main body 20 are the same.
  • the rear surface 25b of the protruding portion 25 is formed by a plane parallel to the vertical plane.
  • the left and right side surfaces of the protruding portion 25 are inclined inward in the left and right direction so that the width of the protruding portion 25 in the left and right direction becomes narrower upward.
  • a gate-shaped recess 30 is formed at the lower end of the protruding portion 25 at the center in the left-right direction.
  • a through hole 29 is formed by the concave portion 30 and the upper surface 20b of the main body 20. The through hole 29 communicates with the notch 26 at the upper end of the notch 26.
  • any of the plurality of links 18 forming the linear structure 24 is formed.
  • a reference link 18 Is referred to as a reference link 18, and the other link 18 disposed one in front of the reference link 18 in the traveling direction Z ⁇ b> 1 is referred to as a front link 18 and one behind in the traveling direction Z ⁇ b> 1 than the reference link 18.
  • the other arranged link 18 is referred to as a rear link 18.
  • the second hook 27 of the front link 18 is hooked by the first hook 28 of the rear link 18.
  • each link 18 forming the linear structure 24 are hooked by the first hooks 28 of the other links 18 which are arranged two rearward in the traveling direction Z1 from the link 18. Is stopped.
  • the rotation of each link 18 forming the linear structure 24 toward the pin 19 is restricted. That is, when the linear structure 24 is formed, each of the links 18 engages the rotation restricting portion 21 of the link 18 with the other links 18 disposed two forwards in the traveling direction Z1. The rotation of the engaged link 18 toward the pin 19 is restricted.
  • the chain 13 is configured such that a plurality of links 18 are accommodated in the chain accommodating portion 15 by rotating a pair of sprockets 14 in the first rotational direction and the second rotational direction.
  • the plurality of links 18 are arranged so as to be linearly arranged outside the chain accommodating portion 15 and are moved back and forth between the second position forming the linear structure 24.
  • the first position corresponds to the position shown in FIG.
  • the second position corresponds to the position shown in FIG.
  • each link 18 slides in the traveling direction Z1 while curving along the guide groove 17 via the pin 19.
  • the first hook portion 28 of the link 18 is connected to the other link 18 disposed two forward in the traveling direction Z1. Is not hooked. Therefore, the rotation of the link 18 located on the curved portion 17b toward the pin 19 is allowed.
  • Each link 18 is sequentially stacked while rotating sequentially in the process of sliding from the curved portion 17b to the linear portion 17a in the guide groove 17 via the pin 19, and moves out of the chain accommodating portion 15. Is done. Thereby, the plurality of links 18 form the linear structure 24, and the chain 13 is moved to the second position.
  • any one of the plurality of links 18 forming the linear structure 24 is referred to as a reference link 18, and the other link 18 that is disposed one ahead of the reference link 18 in the traveling direction Z ⁇ b> 1 is referred to as a first link.
  • the other front link 18 is referred to as one front link 18 and the other link 18 disposed two fronts in the traveling direction Z1 with respect to the reference link 18.
  • the first hook 28 of the reference link 18 hooks the second hook 27 of the second front link 18 in the through hole 29 of the first front link 18.
  • each link 18 (reference link 18) forming the linear structure 24 has the link 18 (first link) disposed one forward in the traveling direction Z1 from the link 18 (reference link 18). It is accommodated in the notch 26 of the front link 18). Further, the front surface 25a of the protruding portion 25 of each link 18 (reference link 18) forming the linear structure 24 has a link 18 (reference link 18) disposed one ahead of the link 18 (reference link 18) in the traveling direction Z1. The first front link 18) contacts the rear surface 20c of the main body 20.
  • each link 18 forming the linear structure 24 toward the pin 19 is restricted in a state where the surface of the linear structure 24 on the rotation restricting portion 21 side is flat. For this reason, since each link 18 forming the linear structure 24 is fixed, the linear structure 24 does not bend in any direction.
  • each link 18 moves in the retreating direction Z ⁇ b> 2 and is sequentially housed in the chain housing 15.
  • Each link 18 accommodated in the chain accommodating portion 15 sequentially rotates toward the pin 19 while sliding from the linear portion 17a to the curved portion 17b in the guide groove 17 via the pin 19 while rotating the guide groove 17.
  • the chain 13 is moved to the first position.
  • each link 18 forming the linear structure 24 is hooked by the first hooking portion 28 on the second hooking portion 27 of the link 18 disposed two fronts in the traveling direction Z1 from the link 18.
  • the state is sequentially released by the rotation of each link 18 in the process of sliding each link 18 from the linear portion 17a of the guide groove 17 to the curved portion 17b via the pin 19. For this reason, each link 18 (chain 13) is smoothly accommodated in the chain accommodation portion 15.
  • each link 18 includes a rotation restricting portion 21.
  • the rotation restricting portions 21 of the links 18 forming the linear structure 24 By engaging with another link 18 disposed two forwards in the traveling direction Z1, the rotation of the engaged link 18 toward the pin 19 (first side) is restricted.
  • the rotation of each link 18 that forms the linear structure 24 is restricted by the rotation restricting portion 21 of the other link 18 that is disposed two behind the link 18 in the traveling direction Z1. You. Therefore, bending of the linear structure 24 formed by the plurality of links 18 can be suppressed with a simple configuration.
  • the rotation restricting portion 21 has a first hook portion 28, and each link 18 is turned by two links 18 disposed rearward of the link 18 in the traveling direction Z ⁇ b> 1. It has a second hooking section 27 that can be hooked by the first hooking section 28 of the movement restricting section 21. According to this configuration, the second locking portion 27 of each link 18 that forms the linear structure 24 is provided with the rotation restricting portion of the other link 18 that is disposed two behind the link 18 in the traveling direction Z1. The first hooking portion 28 of the hook 21 is engaged. Therefore, bending of the linear structure 24 formed by the plurality of links 18 can be suppressed more reliably.
  • the chain drive device 11 includes a chain 13, a sprocket 14 that meshes with the chain 13, and is rotatable in the first rotation direction and the second rotation direction, and a chain housing portion 15 that can house the chain 13.
  • Each link 18 is moved in the traveling direction Z1 when the sprocket 14 is rotated in the first rotation direction to form a linear structure 24, and is moved in the regression direction Z2 when the sprocket 14 is rotated in the second rotation direction. It is moved and housed in the chain housing 15. According to this configuration, the chain 13 can be easily moved between the position where the plurality of links 18 form the linear structure 24 and the position where the plurality of links 18 are housed in the chain housing 15. .
  • the above embodiment may be modified as follows.
  • the rotation restricting portion 21 of each link 18 restricts the rotation of the other link 18 disposed two forwards in the traveling direction Z1 of the link 18 toward the pin 19 (first side) by magnetic force. You may make it.
  • the first hooking portion 28 and the second hooking portion 27 are formed in a rectangular parallelepiped shape that can simply contact each other without hooking each other. Then, a ferromagnetic material is embedded in one of the first hooking portion 28 and the second hooking portion 27, and a magnet is embedded in the other.
  • the rotation of each link 18 forming the linear structure 24 is more than that of the link 18 and the link 18 in the traveling direction Z1.
  • the force is regulated by a magnetic force (attraction force) acting between the link 18 and the rotation restricting portion 21 of the other link 18 disposed at the rear. Therefore, bending of the linear structure 24 formed by the plurality of links 18 can be suppressed with a simpler configuration.
  • the link 18 in the chain 13 may be changed to a link 42.
  • the first bearing portion 22 of the link 18 is changed to a substantially cylindrical shaft portion 40.
  • the second bearing 23 of the link 18 is changed to a bearing 41 having a C-shaped cross section.
  • a plurality of the two links 42 adjacent to each other in the series direction are rotatably fitted with the shaft portion 40 of one of the links 42 so that the bearing 41 of the other link 42 is rotatably fitted.
  • the links 13 may be sequentially connected to form the chain 13. According to this configuration, the links 42 can be rotatably connected to each other without requiring a separate member from the links 42 such as the pins 19 of the above-described embodiment, so that the number of parts of the chain 13 can be reduced.
  • the shaft 40 of the link 42 extends in the left-right direction (axial direction).
  • the central portion 40a of the shaft portion 40 has an outer diameter smaller than the both end portions 40b of the shaft portion 40.
  • a gap is formed between the central portion 40a of the shaft portion 40 and the main body portion 20 so that the bearing portion 41 can be inserted.
  • Both end portions 40b of the shaft portion 40 protrude outward in the left-right direction from the left and right side surfaces of the main body portion 20.
  • Both end portions 40b of the shaft portion 40 are slidably inserted into the guide grooves 17 of the pair of guide plates 12 shown in FIG. 1, respectively, and can mesh with the pair of sprockets 14.
  • the length of the central portion 40a of the shaft portion 40 in the left-right direction is slightly longer than the length of the bearing portion 41 in the left-right direction.
  • the two links 42 adjacent to each other in the serial direction are connected to each other by rotatably fitting the bearing 41 of the other link 42 to the center 40 a of the shaft 40 of one link 42.
  • each of the links constituting the chain 13 is configured to engage with at least three other links 18 arranged forward in the traveling direction Z1 so as to restrict the rotation of the engaged link 18 toward the pin 19. 18 may be configured.
  • the 1st latching part 28 and the 2nd latching part 27 may be changed to the 1st fitting part and the 2nd fitting part, respectively, which can be detachably fitted to each other.
  • the chain drive device 11 may be arranged and used in any direction. That is, for example, the chain drive device 11 may be used by being arranged so that the traveling direction Z1 coincides with the vertical direction, or may be used by being arranged so that the traveling direction Z1 intersects with the vertical direction. .

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Structural Engineering (AREA)
  • Transmission Devices (AREA)

Abstract

A chain (13) having a plurality of links (18) arranged in series. Adjacent links (18) in the series direction are coupled so as to be able to rotate. The chain (13) is able to bend on one side in a direction intersecting the series direction and is not able to bend on a second side opposite the first side. Each link (18) is provided with a rotation restriction part (21). When the chain (13) moves in the direction of advance, causing the plurality of links (18) to be arranged so as to be in a straight line and form a linear structure (24), the rotation restriction part (21) of each link (18) forming the linear structure (24) engages with at least the second link (18) arranged to the front of that link (18) in the direction of advance, thereby restricting rotation of the engaged links (18) toward the first side.

Description

チェーン及びチェーン駆動装置Chain and chain drive
　本開示は、回動可能に直列に連結された複数のリンクを備え、その直列方向と交差する方向の第１の側には屈曲可能である一方、第１の側とは逆の第２の側には屈曲不能とされたチェーンに関する。また、本開示は、当該チェーンを備えたチェーン駆動装置に関する。 The present disclosure comprises a plurality of links rotatably connected in series, wherein a second side opposite to the first side is bendable on a first side in a direction intersecting the series direction. The side relates to a chain that is not bendable. Further, the present disclosure relates to a chain drive device including the chain.
　従来、この種のチェーン駆動装置として、例えば特許文献１に開示された自立チェーンユニットが知られている。この自立チェーンユニットは、駆動ガイド手段と、駆動ガイド手段によってガイドされて直線状に繰り出し、引き込み駆動される自立チェーンとを備えている。駆動ガイド手段は、自立チェーンを繰り出し、引き込み駆動する駆動スプロケットと、引き込まれた自立チェーンの走行経路を規定するチェーンガイドと、カム溝を有したカムガイドとを有している。 Conventionally, a self-supporting chain unit disclosed in Patent Literature 1, for example, is known as this type of chain driving device. The self-supporting chain unit includes a drive guide means, and a self-supporting chain which is guided by the drive guide means, linearly fed out and driven. The drive guide means has a drive sprocket for feeding out and pulling the self-supporting chain, a chain guide for defining a traveling path of the self-supported chain that has been drawn, and a cam guide having a cam groove.
　自立チェーンは、複数のチェーンブロックが積層可能かつ屈曲可能に連接されて構成されている。各チェーンブロックは、ブロック本体とブロック本体に設けられたチェーン部材とを有している。ブロック本体の一方の側面にはリンクプレートを揺動可能に支持する支点が設けられている。ブロック本体の他方の側面には他のリンクプレートが揺動して係合する係合ピンが設けられている。 A self-supporting chain is formed by connecting a plurality of chain blocks in a stackable and bendable manner. Each chain block has a block body and a chain member provided on the block body. A fulcrum for swingably supporting the link plate is provided on one side surface of the block body. An engagement pin with which another link plate swings and engages is provided on the other side surface of the block body.
　リンクプレートの中央部には、係合ピンと係合、離脱可能な係合開口部が設けられている。また、リンクプレートには、当該リンクプレートから外方に突出するカムローラが設けられている。そして、一方の側面にのみリンクプレートを有したチェーンブロックと、他方の側面にのみリンクプレートを有したチェーンブロックとを交互に連接することで自立チェーンが構成される。 係 合 In the center of the link plate, there is provided an engagement opening which can be engaged with and disengaged from the engagement pin. The link plate is provided with a cam roller that protrudes outward from the link plate. Then, a chain block having a link plate only on one side surface and a chain block having a link plate only on the other side surface are alternately connected to form a self-supporting chain.
　各リンクプレートは、端部当接部及び揺動規制部を有している。各リンクプレートにおいて、端部当接部は、そのリンクプレートが係合するブロック本体に設けられた係合ピンより遠い位置に形成されている。各リンクプレートの揺動規制部には、そのリンクプレートに対して支点側に隣接するリンクプレートの端部当接部が当接する。そして、各リンクプレートは、係合ピンに係合し、かつ隣接するリンクプレートの端部当接部が揺動規制部に当接した際に、隣接するリンクプレートとの係合状態が維持されるように構成されている。 Each link plate has an end contact portion and a swing regulating portion. In each link plate, the end contact portion is formed at a position farther than an engaging pin provided on the block body with which the link plate engages. An end contact portion of the link plate adjacent to the link plate on the fulcrum side contacts the swing restricting portion of each link plate. Each link plate is engaged with the engaging pin, and when the end contact portion of the adjacent link plate contacts the swing regulation portion, the engagement state with the adjacent link plate is maintained. It is configured to:
　すなわち、全てのリンクプレートが直線状に固定されるとき、各リンクプレートはそのリンクプレートに隣接するブロック本体の係合ピンに係合している。さらに、このとき、同一側面で隣り合うリンクプレートの端部当接部と揺動規制部とが当接している。したがって、最下方のリンクプレートが揺動しない限り、全てのリンクプレートが固定される。これにより、リンクプレートと係合ピンとの係合が互いに維持され、一箇所のリンクプレートのみの係合が外れることがなく、自立チェーン全体を確実に直線状に固定することができる。 That is, when all the link plates are fixed in a straight line, each link plate is engaged with the engaging pin of the block body adjacent to the link plate. Further, at this time, the end contact portions of the adjacent link plates on the same side face are in contact with the swing regulating portions. Therefore, all link plates are fixed unless the lowermost link plate swings. Thereby, the engagement between the link plate and the engagement pin is maintained, and the engagement of only one link plate is not released, so that the entire self-supporting chain can be reliably fixed linearly.
特開２０１４－１８５６８２号公報JP 2014-185682 A
　ところで、特許文献１の自立チェーンユニットでは、上述のように自立チェーン全体を直線状に固定して屈曲しないようにすることができるが、部品点数が多いので、構成が複雑になってしまうという問題がある。 By the way, in the self-standing chain unit of Patent Literature 1, as described above, the whole self-standing chain can be fixed in a straight line so as not to bend, but the number of parts is large, so that the configuration becomes complicated. There is.
　本開示の目的は、複数のリンクによって形成された直線構造体が屈曲することを簡単な構成で抑制できるチェーン及びチェーン駆動装置を提供することにある。 An object of the present disclosure is to provide a chain and a chain driving device that can suppress bending of a linear structure formed by a plurality of links with a simple configuration.
　以下、上記課題を解決するための手段及びその作用効果について記載する。
　上記課題を解決するチェーンは、直列に配置された複数のリンクを有し、直列方向で隣り合うリンク同士は回動可能に連結されており、前記直列方向と交差する方向の第１の側には屈曲可能である一方、前記第１の側とは逆の第２の側には屈曲不能とされ、前記直列方向に進退移動させて使用されるチェーンであって、各リンクは回動規制部を備え、前記チェーンが進行方向に移動されることにより複数のリンクが直線状に並ぶように配置されて直線構造体を形成したときに、前記直線構造体を形成する各リンクの前記回動規制部は、そのリンクよりも前記進行方向における２つ以上前方に配置された他のリンクと係合することによって当該係合したリンクの前記第１の側への回動を規制する。 Hereinafter, means for solving the above-mentioned problems and the effects thereof will be described.
A chain that solves the above-mentioned problem has a plurality of links arranged in series, and links adjacent in the series direction are rotatably connected to each other, and are provided on a first side in a direction intersecting the series direction. Is a chain that is bendable, but is not bendable on a second side opposite to the first side, and is used by being moved forward and backward in the serial direction. When the chain is moved in the traveling direction, a plurality of links are arranged so as to be linearly arranged to form a linear structure, and the rotation restriction of each link forming the linear structure is formed. The portion regulates the rotation of the engaged link toward the first side by engaging with another link that is disposed two or more links ahead of the link in the traveling direction.
　この構成によれば、直線構造体を形成する各リンクの回動が、そのリンクよりも進行方向における２つ以上後方に配置された他のリンクの回動規制部によって規制される。このため、複数のリンクによって形成された直線構造体が屈曲することを簡単な構成で抑制できる。 According to this configuration, the rotation of each link forming the linear structure is restricted by the rotation restricting portions of the other links that are arranged at least two rearward in the traveling direction from the link. For this reason, it is possible to suppress the bending of the linear structure formed by the plurality of links with a simple configuration.
　上記チェーンにおいて、各リンクの前記回動規制部は、第１掛止部を有し、各リンクは、そのリンクよりも前記進行方向における２つ以上後方に配置された他のリンクの前記回動規制部の前記第１掛止部によって掛止可能な第２掛止部を有していることが好ましい。 In the above-mentioned chain, the rotation restricting portion of each link has a first latching portion, and each link is rotated by at least two links located rearward of the link in the traveling direction. It is preferable that the regulating portion has a second hook portion that can be hooked by the first hook portion.
　この構成によれば、直線構造体を形成する各リンクの第２掛止部が、そのリンクよりも進行方向における２つ以上後方に配置された他のリンクの回動規制部の第１掛止部によって掛止される。このため、複数のリンクによって形成された直線構造体が屈曲することをより確実に抑制できる。 According to this configuration, the second hook of each link forming the linear structure is the first hook of the rotation restricting portion of the other link that is disposed at least two or more rearward in the traveling direction of the link. Hooked by the department. For this reason, bending of the linear structure formed by the plurality of links can be more reliably suppressed.
　上記チェーンにおいて、複数のリンクが前記直線構造体を形成したときに、前記直線構造体を形成する各リンクの前記回動規制部は、そのリンクよりも前記進行方向における２つ以上前方に配置された他のリンクの前記第１の側への回動を磁力によって規制することが好ましい。 In the above chain, when a plurality of links form the linear structure, the rotation restricting portions of the links forming the linear structure are arranged at least two forwards in the traveling direction from the link. Preferably, the rotation of the other link toward the first side is restricted by a magnetic force.
　この構成によれば、直線構造体を形成する各リンクの回動が、そのリンクよりも進行方向における２つ以上後方に配置された他のリンクの回動規制部との間に作用する磁力によって規制される。このため、複数のリンクによって形成された直線構造体が屈曲することをより簡単な構成で抑制できる。 According to this configuration, the rotation of each link forming the linear structure is caused by the magnetic force acting between the link and the rotation restricting portions of the other links that are arranged at least two rearward in the traveling direction of the link. Be regulated. For this reason, bending of the linear structure formed by the plurality of links can be suppressed with a simpler configuration.
　上記チェーンにおいて、各リンクは、軸部及び軸受部を備え、前記直列方向で隣り合う２つのリンク同士は、一方のリンクの前記軸部に他方のリンクの前記軸受部が回動可能に嵌合することによって連結されていることが好ましい。 In the above-described chain, each link includes a shaft portion and a bearing portion, and the two links that are adjacent in the serial direction are fitted to the shaft portion of one link so that the bearing portion of the other link can rotate. It is preferable that they are connected by the following.
　この構成によれば、ピンなどのリンクとは別の部材を必要とすることなくリンク同士を回動可能に連結できる。
　上記課題を解決するチェーン駆動装置は、前記チェーンと、前記チェーンと噛合し、第１回転方向及び前記第１回転方向とは反対の第２回転方向に回転可能なスプロケットと、前記チェーンを収容可能なチェーン収容部と、を備え、各リンクは、前記スプロケットが前記第１回転方向に回転された場合に前記進行方向に移動されて前記直線構造体を形成し、前記スプロケットが前記第２回転方向に回転された場合に前記進行方向とは反対の退行方向に移動されて前記チェーン収容部に収容される。 According to this configuration, the links can be rotatably connected without requiring a separate member such as a pin.
A chain driving device that solves the above-mentioned problem can accommodate the chain, a sprocket that meshes with the chain, and that can rotate in a first rotation direction and a second rotation direction opposite to the first rotation direction, and the chain. Each link is moved in the traveling direction when the sprocket is rotated in the first rotation direction to form the linear structure, and the sprocket is moved in the second rotation direction. Is rotated in the retreating direction opposite to the traveling direction and is accommodated in the chain accommodating portion.
　この構成によれば、上記チェーンと同様の作用効果を得ることができるとともに、チェーンを、複数のリンクが直線構造体を形成する位置と複数のリンクがチェーン収容部に収容される位置との間で、容易に移動させることができる。 According to this configuration, the same operation and effect as those of the above-described chain can be obtained, and the chain is moved between the position where the plurality of links form the linear structure and the position where the plurality of links are stored in the chain storage portion. Can be easily moved.
　本開示によれば、複数のリンクによって形成された直線構造体が屈曲することを簡単な構成で抑制できる。 According to the present disclosure, it is possible to suppress bending of a linear structure formed by a plurality of links with a simple configuration.
一実施形態のリンクがチェーン収容部に収容されたときのチェーン駆動装置を示す斜視図。The perspective view which shows the chain drive device when the link of one embodiment is accommodated in the chain accommodating part. チェーン駆動装置の内部を示す斜視図。FIG. 2 is a perspective view showing the inside of the chain driving device. リンクが直線構造体を形成したときのチェーン駆動装置を示す斜視図。FIG. 4 is a perspective view showing the chain driving device when the link forms a linear structure. リンクを上側から見たときの斜視図。The perspective view when a link is seen from the upper side. リンクを下側から見たときの斜視図。The perspective view when a link is seen from the lower side. リンクが直線構造体を形成したときのチェーンの断面図。Sectional drawing of a chain when a link forms a linear structure. 変更例のリンクの斜視図。The perspective view of the link of a modification. 図７のリンクを複数直列に連結してチェーンの一部を形成したときの状態を示す斜視図。FIG. 8 is a perspective view showing a state where a plurality of links of FIG. 7 are connected in series to form a part of a chain.
　以下、チェーン駆動装置の一実施形態を図面に従って説明する。
　図１及び図２に示すように、チェーン駆動装置１１は、一対の矩形状のガイド板１２と、チェーン１３と、一対のスプロケット１４とを備えている。一対のガイド板１２は、図示しないケース内に配置されており、互いに対向している。チェーン１３は、一対のガイド板１２にガイドされる。一対のスプロケット１４は、チェーン１３と噛合するとともに第１回転方向及び第１回転方向とは反対の第２回転方向に回転可能である。一対のガイド板１２同士の間の空間は、チェーン１３を収容可能なチェーン収容部１５を構成している。 Hereinafter, an embodiment of a chain drive device will be described with reference to the drawings.
As shown in FIGS. 1 and 2, the chain driving device 11 includes a pair of rectangular guide plates 12, a chain 13, and a pair of sprockets 14. The pair of guide plates 12 are arranged in a case (not shown) and face each other. The chain 13 is guided by a pair of guide plates 12. The pair of sprockets 14 mesh with the chain 13 and are rotatable in a first rotation direction and a second rotation direction opposite to the first rotation direction. The space between the pair of guide plates 12 constitutes a chain housing 15 that can house the chain 13.
　各ガイド板１２には、対応するスプロケット１４が収容される円形の収容孔１６と、チェーン１３をガイドするガイド溝１７とがそれぞれ当該ガイド板１２を貫通するように形成されている。ガイド溝１７は、全体として略Ｕ字状に湾曲するように延びており、直線部１７ａを有している。直線部１７ａは、チェーン１３の出入口近傍において鉛直方向に真っ直ぐに延びている。すなわち、ガイド溝１７は、直線部１７ａと、直線部１７ａ以外の湾曲部１７ｂとを有している。そして、ガイド溝１７の直線部１７ａの一部は、収容孔１６の周縁部の一部と繋がっている。すなわち、ガイド溝１７と収容孔１６とは連通している。スプロケット１４はガイド板１２と同じ厚さを有している。一対のスプロケット１４は、一対のガイド板１２の収容孔１６にそれぞれ収容された状態で一体回転可能に連結されている。 ガ イ ド Each guide plate 12 is formed with a circular accommodation hole 16 for accommodating the corresponding sprocket 14 and a guide groove 17 for guiding the chain 13 so as to pass through the guide plate 12. The guide groove 17 extends so as to be curved in a substantially U-shape as a whole, and has a linear portion 17a. The straight portion 17a extends straight in the vertical direction near the entrance and exit of the chain 13. That is, the guide groove 17 has a straight portion 17a and a curved portion 17b other than the straight portion 17a. Then, a part of the linear portion 17 a of the guide groove 17 is connected to a part of the peripheral edge of the accommodation hole 16. That is, the guide groove 17 and the accommodation hole 16 communicate with each other. The sprocket 14 has the same thickness as the guide plate 12. The pair of sprockets 14 are integrally rotatably connected to each other while being accommodated in the accommodation holes 16 of the pair of guide plates 12.
　一対のスプロケット１４は、モーター及び減速機等を有した図示しない駆動部によって第１回転方向及び第２回転方向に回転駆動される。第１回転方向は図１では反時計方向に対応し、第２回転方向は図１では時計方向に対応する。チェーン１３は、直列に配置された複数のリンク１８を有している。詳しくは、チェーン１３は、チェーン１３の長手方向となる直列方向で隣り合うリンク１８同士が順次に円柱状のピン１９によって回動可能に連結された構成を有している。 (4) The pair of sprockets 14 are rotationally driven in a first rotation direction and a second rotation direction by a drive unit (not shown) having a motor, a speed reducer, and the like. The first rotation direction corresponds to the counterclockwise direction in FIG. 1, and the second rotation direction corresponds to the clockwise direction in FIG. The chain 13 has a plurality of links 18 arranged in series. More specifically, the chain 13 has a configuration in which links 18 that are adjacent in a serial direction that is the longitudinal direction of the chain 13 are sequentially rotatably connected to each other by a cylindrical pin 19.
　図２及び図４に示すように、各リンク１８は一つの部品によって構成されている。詳しくは、各リンク１８は、略ブロック状の本体部２０、回動規制部２１、左右一対の円筒状の第１軸受部２２、及び円筒状の第２軸受部２３を備えている。回動規制部２１は本体部２０の後端部に形成されている。左右一対の第１軸受部２２は本体部２０の前端上部に形成されている。第２軸受部２３は本体部２０の前端下部における左右方向の中央部に形成されている。 リ ン ク As shown in FIGS. 2 and 4, each link 18 is constituted by one component. Specifically, each link 18 includes a substantially block-shaped main body 20, a rotation restricting part 21, a pair of left and right cylindrical first bearings 22, and a cylindrical second bearing 23. The rotation restricting portion 21 is formed at a rear end of the main body 20. A pair of left and right first bearing portions 22 are formed at the upper front end of the main body portion 20. The second bearing portion 23 is formed at the center in the left-right direction at the lower front end of the main body 20.
　第１軸受部２２及び第２軸受部２３は、共に左右方向に延びる軸線を有し、互いに外径が同じになっている。一対の第１軸受部２２同士の間隔は、第２軸受部２３の長さよりも僅かに広くなるように設定されている。リンク１８において、左右方向における一対の第１軸受部２２の外側の端面は、本体部２０の左右両側面とそれぞれ面一になっている。そして、２つのリンク１８を上下に積層したときには、上側のリンク１８の第２軸受部２３が下側のリンク１８の一対の第１軸受部２２同士の間に挿入されるとともに、上側のリンク１８の本体部２０の下面２０ａが下側のリンク１８の本体部２０の上面２０ｂに接触する。 The first bearing portion 22 and the second bearing portion 23 both have axes extending in the left-right direction, and have the same outer diameter. The interval between the pair of first bearing portions 22 is set to be slightly wider than the length of the second bearing portion 23. In the link 18, the outer end surfaces of the pair of first bearing portions 22 in the left-right direction are flush with the left and right side surfaces of the main body 20, respectively. When the two links 18 are vertically stacked, the second bearing 23 of the upper link 18 is inserted between the pair of first bearings 22 of the lower link 18 and the upper link 18 The lower surface 20a of the main body 20 of the lower link 18 contacts the upper surface 20b of the main body 20 of the lower link 18.
　このとき、上側のリンク１８の第２軸受部２３の軸線と下側のリンク１８の一対の第１軸受部２２の軸線とは一致した状態となる。この状態で上側のリンク１８の第２軸受部２３及び下側のリンク１８の一対の第１軸受部２２にピン１９を挿入することで、上下２つのリンク１８が一対の第１軸受部２２、第２軸受部２３、及びピン１９を介して回動可能に連結される。したがって、チェーン１３は、直列方向と直交（交差）する一方向における第１の側となるピン１９側には屈曲可能である一方、第１の側とは逆の第２の側となる回動規制部２１側には屈曲不能である。 At this time, the axis of the second bearing portion 23 of the upper link 18 and the axis of the pair of first bearing portions 22 of the lower link 18 are aligned. In this state, by inserting pins 19 into the second bearing portion 23 of the upper link 18 and the pair of first bearing portions 22 of the lower link 18, the upper and lower two links 18 become the pair of first bearing portions 22, It is rotatably connected via the second bearing 23 and the pin 19. Therefore, the chain 13 is bendable to the pin 19 side which is the first side in one direction orthogonal (intersecting) to the serial direction, while being turned to the second side opposite to the first side. It cannot be bent to the restricting portion 21 side.
　ピン１９は、一対の第１軸受部２２に対して回転不能に嵌合され、第２軸受部２３に対して回転可能に嵌合されている。ピン１９の両端部は、一対の第１軸受部２２よりもピン１９の軸方向の外側に突出している。ピン１９の両端部は、一対のガイド板１２のガイド溝１７にそれぞれ摺動可能に挿入されるとともに、一対のスプロケット１４とそれぞれ噛合可能とされている。 The pin 19 is non-rotatably fitted to the pair of first bearing portions 22 and rotatably fitted to the second bearing portion 23. Both ends of the pin 19 protrude beyond the pair of first bearing portions 22 in the axial direction of the pin 19. Both ends of the pin 19 are slidably inserted into the guide grooves 17 of the pair of guide plates 12, respectively, and are capable of meshing with the pair of sprockets 14, respectively.
　図１及び図３に示すように、各リンク１８は、一対のスプロケット１４が第１回転方向及び第２回転方向に回転駆動されることで、ピン１９を介してガイド溝１７に沿ってガイドされながら進退移動される。すなわち、各リンク１８は、一対のスプロケット１４が第１回転方向に回転駆動されると進行方向Ｚ１に移動され、一対のスプロケット１４が第２回転方向に回転駆動されると進行方向Ｚ１とは反対の退行方向Ｚ２に移動される。 As shown in FIGS. 1 and 3, each link 18 is guided along the guide groove 17 via the pin 19 by the pair of sprockets 14 being driven to rotate in the first rotation direction and the second rotation direction. While moving forward and backward. That is, each link 18 is moved in the traveling direction Z1 when the pair of sprockets 14 is rotationally driven in the first rotational direction, and is opposite to the traveling direction Z1 when the pair of sprockets 14 is rotationally driven in the second rotational direction. In the regression direction Z2.
　そして、複数のリンク１８は、進行方向Ｚ１に移動されると、チェーン収容部１５の外部で直線状に並ぶように配置されて直線構造体２４を形成する。また、複数のリンク１８は、退行方向Ｚ２に移動されると、チェーン収容部１５内に収容されるとともにガイド溝１７の湾曲部１７ｂに沿ってピン１９側に屈曲（回動）される。つまり、チェーン１３は、直列方向に進退移動させて使用される。 {Circle around (4)} When the plurality of links 18 are moved in the traveling direction Z1, they are arranged so as to be linearly arranged outside the chain housing portion 15 to form the linear structure 24. When the plurality of links 18 are moved in the retreating direction Z <b> 2, the links 18 are housed in the chain housing 15 and bent (rotated) toward the pins 19 along the curved portions 17 b of the guide grooves 17. That is, the chain 13 is used by moving forward and backward in the serial direction.
　図４及び図５に示すように、各リンク１８における回動規制部２１は、本体部２０よりも上方へ突出した突出部２５と、突出部２５の下側に形成されて他のリンク１８の突出部２５を収容可能な切欠凹部２６とを備えている。切欠凹部２６は、突出部２５と対応する形状を有しており、左右両側面と上面とを有している。切欠凹部２６の前側は本体部２０の後面２０ｃによって閉塞されている。切欠凹部２６の後側及び下側は開放されている。 As shown in FIGS. 4 and 5, the rotation restricting portion 21 of each link 18 has a protruding portion 25 protruding above the main body portion 20 and a lower portion of the other link 18 formed below the protruding portion 25. And a cutout recess 26 that can accommodate the protrusion 25. The notch 26 has a shape corresponding to the protrusion 25, and has left and right side surfaces and an upper surface. The front side of the notch 26 is closed by the rear surface 20 c of the main body 20. The rear and lower sides of the notch 26 are open.
　本体部２０の後面２０ｃは、下端よりも上端の方が後方に位置するように傾斜している。本体部２０の後面２０ｃにおける下端の中央部には、後方に向かって突出する楔形の第２掛止部２７が形成されている。第２掛止部２７の下面２７ａは、本体部２０の下面２０ａと面一になっている。第２掛止部２７の上面２７ｂは、後方に向かうほど高さが低くなるように傾斜している。 の 後 The rear surface 20c of the main body 20 is inclined such that the upper end is located rearward from the lower end. At the center of the lower end of the rear surface 20c of the main body 20, a wedge-shaped second engaging portion 27 projecting rearward is formed. The lower surface 27a of the second hooking portion 27 is flush with the lower surface 20a of the main body 20. The upper surface 27b of the second engaging portion 27 is inclined such that the height decreases toward the rear.
　突出部２５は、略ブロック状をなしている。突出部２５の上端部には前方に向かって突出する第１掛止部２８が形成されている。第１掛止部２８の下面２８ａは、前方に向かうほど高さが高くなるように傾斜している。第１掛止部２８の下面２８ａの傾斜角度と第２掛止部２７の上面２７ｂの傾斜角度とは同じになっている。第１掛止部２８の上面２８ｂは、水平な平面により構成されている。突出部２５の前面２５ａは、下端よりも上端の方が後方に位置するように傾斜している。突出部２５の前面２５ａの傾斜角度と本体部２０の後面２０ｃの傾斜角度とは同じになっている。 The protruding portion 25 has a substantially block shape. At an upper end of the protruding portion 25, a first latch portion 28 protruding forward is formed. The lower surface 28a of the first engaging portion 28 is inclined such that the height increases as it goes forward. The inclination angle of the lower surface 28a of the first latching portion 28 and the inclination angle of the upper surface 27b of the second latching portion 27 are the same. The upper surface 28b of the first hook portion 28 is formed by a horizontal plane. The front surface 25a of the protruding portion 25 is inclined such that the upper end is located rearward of the lower end. The inclination angle of the front surface 25a of the protrusion 25 and the inclination angle of the rear surface 20c of the main body 20 are the same.
　突出部２５の後面２５ｂは、鉛直面と平行な平面により構成されている。突出部２５の左右両側面は、上方に向かうほど突出部２５の左右方向の幅が狭くなるように左右方向の内側に傾斜している。突出部２５の下端部における左右方向の中央部には門型の凹部３０が形成されている。凹部３０と本体部２０の上面２０ｂとで貫通孔２９が形成されている。貫通孔２９は、切欠凹部２６の上端部において切欠凹部２６と連通している。 の 後 The rear surface 25b of the protruding portion 25 is formed by a plane parallel to the vertical plane. The left and right side surfaces of the protruding portion 25 are inclined inward in the left and right direction so that the width of the protruding portion 25 in the left and right direction becomes narrower upward. A gate-shaped recess 30 is formed at the lower end of the protruding portion 25 at the center in the left-right direction. A through hole 29 is formed by the concave portion 30 and the upper surface 20b of the main body 20. The through hole 29 communicates with the notch 26 at the upper end of the notch 26.
　図３～図５に示すように、チェーン１３が進行方向Ｚ１に移動されて複数のリンク１８が直線構造体２４を形成した場合において、直線構造体２４を形成する複数のリンク１８のうちの任意の一つを基準リンク１８と称し、基準リンク１８よりも進行方向Ｚ１における１つ前方に配置された他のリンク１８を前方リンク１８と称し、基準リンク１８よりも進行方向Ｚ１における１つ後方に配置された他のリンク１８を後方リンク１８と称する。この場合、基準リンク１８の貫通孔２９内では、前方リンク１８の第２掛止部２７が、後方リンク１８の第１掛止部２８によって掛止される。 As shown in FIGS. 3 to 5, when the chain 13 is moved in the traveling direction Z1 and the plurality of links 18 form the linear structure 24, any of the plurality of links 18 forming the linear structure 24 is formed. Is referred to as a reference link 18, and the other link 18 disposed one in front of the reference link 18 in the traveling direction Z <b> 1 is referred to as a front link 18 and one behind in the traveling direction Z <b> 1 than the reference link 18. The other arranged link 18 is referred to as a rear link 18. In this case, in the through hole 29 of the reference link 18, the second hook 27 of the front link 18 is hooked by the first hook 28 of the rear link 18.
　すなわち、直線構造体２４を形成する各リンク１８の第２掛止部２７は、そのリンク１８よりも進行方向Ｚ１における２つ後方に配置された他のリンク１８の第１掛止部２８によって掛止される。これにより、直線構造体２４を形成する各リンク１８のピン１９側への回動が規制される。つまり、各リンク１８は、直線構造体２４が形成された場合に、そのリンク１８の回動規制部２１を進行方向Ｚ１における２つ前方に配置された他のリンク１８と係合させることによって、当該係合させたリンク１８のピン１９側への回動を規制する。 That is, the second hooks 27 of each link 18 forming the linear structure 24 are hooked by the first hooks 28 of the other links 18 which are arranged two rearward in the traveling direction Z1 from the link 18. Is stopped. Thus, the rotation of each link 18 forming the linear structure 24 toward the pin 19 is restricted. That is, when the linear structure 24 is formed, each of the links 18 engages the rotation restricting portion 21 of the link 18 with the other links 18 disposed two forwards in the traveling direction Z1. The rotation of the engaged link 18 toward the pin 19 is restricted.
　次に、チェーン駆動装置１１の作用について説明する。
　図１及び図３に示すように、チェーン１３は、一対のスプロケット１４の第１回転方向及び第２回転方向への回転駆動により、複数のリンク１８がチェーン収容部１５内に収容される第１位置と、複数のリンク１８がチェーン収容部１５の外部で直線状に並ぶように配置されて直線構造体２４を形成する第２位置との間で進退移動される。上記第１位置は図１に示す位置に対応している。上記第２位置は図３に示す位置に対応している。 Next, the operation of the chain drive device 11 will be described.
As shown in FIGS. 1 and 3, the chain 13 is configured such that a plurality of links 18 are accommodated in the chain accommodating portion 15 by rotating a pair of sprockets 14 in the first rotational direction and the second rotational direction. The plurality of links 18 are arranged so as to be linearly arranged outside the chain accommodating portion 15 and are moved back and forth between the second position forming the linear structure 24. The first position corresponds to the position shown in FIG. The second position corresponds to the position shown in FIG.
　そして、チェーン１３を第１位置から第２位置へ移動させる場合には、まず、一対のスプロケット１４を第１回転方向（図１では反時計方向）に回転駆動させる。すると、図６に示すように、各リンク１８は、ピン１９を介してガイド溝１７に沿ってカーブしながら進行方向Ｚ１に摺動する。このとき、対応するピン１９がガイド溝１７の湾曲部１７ｂに位置する各リンク１８においては、そのリンク１８の第１掛止部２８が進行方向Ｚ１における２つ前方に配置された他のリンク１８の第２掛止部２７を掛止しない。このため、湾曲部１７ｂに位置するリンク１８のピン１９側への回動は、許容される。 When the chain 13 is moved from the first position to the second position, first, the pair of sprockets 14 are driven to rotate in the first rotation direction (counterclockwise in FIG. 1). Then, as shown in FIG. 6, each link 18 slides in the traveling direction Z1 while curving along the guide groove 17 via the pin 19. At this time, in each link 18 in which the corresponding pin 19 is located in the curved portion 17b of the guide groove 17, the first hook portion 28 of the link 18 is connected to the other link 18 disposed two forward in the traveling direction Z1. Is not hooked. Therefore, the rotation of the link 18 located on the curved portion 17b toward the pin 19 is allowed.
　そして、各リンク１８は、ピン１９を介してガイド溝１７内を湾曲部１７ｂから直線部１７ａへ摺動する過程で順次に回動しながら直線状に積み重ねられてチェーン収容部１５の外部へ移動される。これにより、複数のリンク１８が直線構造体２４を形成し、チェーン１３が第２位置へ移動される。 Each link 18 is sequentially stacked while rotating sequentially in the process of sliding from the curved portion 17b to the linear portion 17a in the guide groove 17 via the pin 19, and moves out of the chain accommodating portion 15. Is done. Thereby, the plurality of links 18 form the linear structure 24, and the chain 13 is moved to the second position.
　このとき、直線構造体２４を形成する複数のリンク１８のうちの任意の一つを基準リンク１８と称し、基準リンク１８よりも進行方向Ｚ１における１つ前方に配置された他のリンク１８を第１前方リンク１８と称し、基準リンク１８よりも進行方向Ｚ１における２つ前方に配置された他のリンク１８を第２前方リンク１８と称する。この場合、基準リンク１８の第１掛止部２８は、第１前方リンク１８の貫通孔２９内で、第２前方リンク１８の第２掛止部２７を掛止する。さらにこのとき、直線構造体２４を形成する各リンク１８（基準リンク１８）の突出部２５は、そのリンク１８（基準リンク１８）よりも進行方向Ｚ１における１つ前方に配置されたリンク１８（第１前方リンク１８）の切欠凹部２６内に収容される。さらに、直線構造体２４を形成する各リンク１８（基準リンク１８）の突出部２５の前面２５ａは、そのリンク１８（基準リンク１８）よりも進行方向Ｚ１における１つ前方に配置されたリンク１８（第１前方リンク１８）の本体部２０の後面２０ｃに接触する。 At this time, any one of the plurality of links 18 forming the linear structure 24 is referred to as a reference link 18, and the other link 18 that is disposed one ahead of the reference link 18 in the traveling direction Z <b> 1 is referred to as a first link. The other front link 18 is referred to as one front link 18 and the other link 18 disposed two fronts in the traveling direction Z1 with respect to the reference link 18. In this case, the first hook 28 of the reference link 18 hooks the second hook 27 of the second front link 18 in the through hole 29 of the first front link 18. Further, at this time, the projecting portion 25 of each link 18 (reference link 18) forming the linear structure 24 has the link 18 (first link) disposed one forward in the traveling direction Z1 from the link 18 (reference link 18). It is accommodated in the notch 26 of the front link 18). Further, the front surface 25a of the protruding portion 25 of each link 18 (reference link 18) forming the linear structure 24 has a link 18 (reference link 18) disposed one ahead of the link 18 (reference link 18) in the traveling direction Z1. The first front link 18) contacts the rear surface 20c of the main body 20.
　これにより、直線構造体２４における回動規制部２１側の面が平坦な状態で、直線構造体２４を形成する各リンク１８のピン１９側への回動が規制される。このため、直線構造体２４を形成する各リンク１８が固定されるので、直線構造体２４はいずれの方向へも屈曲しなくなる。 Accordingly, the rotation of each link 18 forming the linear structure 24 toward the pin 19 is restricted in a state where the surface of the linear structure 24 on the rotation restricting portion 21 side is flat. For this reason, since each link 18 forming the linear structure 24 is fixed, the linear structure 24 does not bend in any direction.
　一方、チェーン１３を第２位置から第１位置へ移動させる場合には、まず、一対のスプロケット１４を第２回転方向（図３では時計方向）に回転駆動させる。すると、図２に示すように、各リンク１８は、退行方向Ｚ２に移動し、チェーン収容部１５内に順次に収容される。チェーン収容部１５内に収容された各リンク１８は、ピン１９を介してガイド溝１７内を直線部１７ａから湾曲部１７ｂへ摺動する過程で順次にピン１９側へ回動しながらガイド溝１７に沿って退行方向Ｚ２に移動する。これにより、チェーン１３が第１位置へ移動される。 On the other hand, when moving the chain 13 from the second position to the first position, first, the pair of sprockets 14 are driven to rotate in the second rotation direction (clockwise in FIG. 3). Then, as shown in FIG. 2, each link 18 moves in the retreating direction Z <b> 2 and is sequentially housed in the chain housing 15. Each link 18 accommodated in the chain accommodating portion 15 sequentially rotates toward the pin 19 while sliding from the linear portion 17a to the curved portion 17b in the guide groove 17 via the pin 19 while rotating the guide groove 17. Along the retreat direction Z2. Thereby, the chain 13 is moved to the first position.
　このとき、直線構造体２４を形成する各リンク１８の第１掛止部２８による、そのリンク１８よりも進行方向Ｚ１における２つ前方に配置されたリンク１８の第２掛止部２７に対する掛止状態は、各リンク１８がピン１９を介してガイド溝１７の直線部１７ａから湾曲部１７ｂへ摺動する過程で各リンク１８が回動することによって順次に解除される。このため、各リンク１８（チェーン１３）は、円滑にチェーン収容部１５内に収容される。 At this time, each link 18 forming the linear structure 24 is hooked by the first hooking portion 28 on the second hooking portion 27 of the link 18 disposed two fronts in the traveling direction Z1 from the link 18. The state is sequentially released by the rotation of each link 18 in the process of sliding each link 18 from the linear portion 17a of the guide groove 17 to the curved portion 17b via the pin 19. For this reason, each link 18 (chain 13) is smoothly accommodated in the chain accommodation portion 15.
　以上詳述した実施形態によれば、次のような効果が発揮される。
　（１）チェーン１３において、各リンク１８は回動規制部２１を備えている。チェーン１３が進行方向Ｚ１に移動されることにより複数のリンク１８が直線構造体２４を形成したときに、直線構造体２４を形成する各リンク１８の回動規制部２１は、そのリンク１８よりも進行方向Ｚ１における２つ前方に配置された他のリンク１８と係合することによって当該係合したリンク１８のピン１９側（第１の側）への回動を規制する。この構成によれば、直線構造体２４を形成する各リンク１８の回動が、そのリンク１８よりも進行方向Ｚ１における２つ後方に配置された他のリンク１８の回動規制部２１によって規制される。このため、複数のリンク１８によって形成された直線構造体２４が屈曲することを簡単な構成で抑制できる。 According to the embodiment described in detail above, the following effects are exhibited.
(1) In the chain 13, each link 18 includes a rotation restricting portion 21. When the plurality of links 18 form the linear structure 24 by moving the chain 13 in the traveling direction Z1, the rotation restricting portions 21 of the links 18 forming the linear structure 24 By engaging with another link 18 disposed two forwards in the traveling direction Z1, the rotation of the engaged link 18 toward the pin 19 (first side) is restricted. According to this configuration, the rotation of each link 18 that forms the linear structure 24 is restricted by the rotation restricting portion 21 of the other link 18 that is disposed two behind the link 18 in the traveling direction Z1. You. Therefore, bending of the linear structure 24 formed by the plurality of links 18 can be suppressed with a simple configuration.
　（２）チェーン１３において、回動規制部２１は第１掛止部２８を有し、各リンク１８は、そのリンク１８よりも進行方向Ｚ１における２つ後方に配置された他のリンク１８の回動規制部２１の第１掛止部２８によって掛止可能な第２掛止部２７を有している。この構成によれば、直線構造体２４を形成する各リンク１８の第２掛止部２７が、そのリンク１８よりも進行方向Ｚ１における２つ後方に配置された他のリンク１８の回動規制部２１の第１掛止部２８によって掛止される。このため、複数のリンク１８によって形成された直線構造体２４が屈曲することをより確実に抑制できる。 (2) In the chain 13, the rotation restricting portion 21 has a first hook portion 28, and each link 18 is turned by two links 18 disposed rearward of the link 18 in the traveling direction Z <b> 1. It has a second hooking section 27 that can be hooked by the first hooking section 28 of the movement restricting section 21. According to this configuration, the second locking portion 27 of each link 18 that forms the linear structure 24 is provided with the rotation restricting portion of the other link 18 that is disposed two behind the link 18 in the traveling direction Z1. The first hooking portion 28 of the hook 21 is engaged. Therefore, bending of the linear structure 24 formed by the plurality of links 18 can be suppressed more reliably.
　（３）チェーン駆動装置１１は、チェーン１３と、チェーン１３と噛合し、第１回転方向及び第２回転方向に回転可能なスプロケット１４と、チェーン１３を収容可能なチェーン収容部１５とを備えている。各リンク１８は、スプロケット１４が第１回転方向に回転された場合に進行方向Ｚ１に移動されて直線構造体２４を形成し、スプロケット１４が第２回転方向に回転された場合に退行方向Ｚ２に移動されてチェーン収容部１５に収容される。この構成によれば、チェーン１３を、複数のリンク１８が直線構造体２４を形成する位置と複数のリンク１８がチェーン収容部１５に収容される位置との間で、容易に移動させることができる。 (3) The chain drive device 11 includes a chain 13, a sprocket 14 that meshes with the chain 13, and is rotatable in the first rotation direction and the second rotation direction, and a chain housing portion 15 that can house the chain 13. I have. Each link 18 is moved in the traveling direction Z1 when the sprocket 14 is rotated in the first rotation direction to form a linear structure 24, and is moved in the regression direction Z2 when the sprocket 14 is rotated in the second rotation direction. It is moved and housed in the chain housing 15. According to this configuration, the chain 13 can be easily moved between the position where the plurality of links 18 form the linear structure 24 and the position where the plurality of links 18 are housed in the chain housing 15. .
　（変更例）
　なお、上記実施形態は次のように変更してもよい。
　・各リンク１８の回動規制部２１は、そのリンク１８よりも進行方向Ｚ１における２つ前方に配置された他のリンク１８のピン１９側（第１の側）への回動を磁力によって規制するようにしてもよい。この場合、第１掛止部２８及び第２掛止部２７は、互いに掛止することなく単に互いに接触可能な直方体状に形成される。そして、第１掛止部２８及び第２掛止部２７の一方に強磁性体を埋設するとともに他方に磁石が埋設される。この構成によれば、複数のリンク１８が直線構造体２４を形成した場合に、直線構造体２４を形成する各リンク１８の回動が、そのリンク１８とそのリンク１８よりも進行方向Ｚ１における２つ後方に配置された他のリンク１８の回動規制部２１との間に作用する磁力（吸着力）によって規制される。このため、複数のリンク１８によって形成された直線構造体２４が屈曲することをより簡単な構成で抑制できる。 (Example of change)
The above embodiment may be modified as follows.
The rotation restricting portion 21 of each link 18 restricts the rotation of the other link 18 disposed two forwards in the traveling direction Z1 of the link 18 toward the pin 19 (first side) by magnetic force. You may make it. In this case, the first hooking portion 28 and the second hooking portion 27 are formed in a rectangular parallelepiped shape that can simply contact each other without hooking each other. Then, a ferromagnetic material is embedded in one of the first hooking portion 28 and the second hooking portion 27, and a magnet is embedded in the other. According to this configuration, when the plurality of links 18 form the linear structure 24, the rotation of each link 18 forming the linear structure 24 is more than that of the link 18 and the link 18 in the traveling direction Z1. The force is regulated by a magnetic force (attraction force) acting between the link 18 and the rotation restricting portion 21 of the other link 18 disposed at the rear. Therefore, bending of the linear structure 24 formed by the plurality of links 18 can be suppressed with a simpler configuration.
　・図７に示すように、チェーン１３におけるリンク１８をリンク４２に変更してもよい。リンク４２では、リンク１８における第１軸受部２２が略円柱状の軸部４０に変更されている。また、リンク４２では、リンク１８における第２軸受部２３が断面視Ｃ字状の軸受部４１に変更されている。そして、図８に示すように、直列方向で隣り合う２つのリンク４２のうちの一方のリンク４２の軸部４０に他方のリンク４２の軸受部４１を回動可能に嵌合させることによって複数のリンク４２を順次に連結してチェーン１３を形成するようにしてもよい。この構成によれば、上記実施形態のピン１９などのリンク４２とは別の部材を必要とすることなくリンク４２同士を回動可能に連結できるので、チェーン１３の部品点数の低減に寄与できる。 As shown in FIG. 7, the link 18 in the chain 13 may be changed to a link 42. In the link 42, the first bearing portion 22 of the link 18 is changed to a substantially cylindrical shaft portion 40. In the link 42, the second bearing 23 of the link 18 is changed to a bearing 41 having a C-shaped cross section. Then, as shown in FIG. 8, a plurality of the two links 42 adjacent to each other in the series direction are rotatably fitted with the shaft portion 40 of one of the links 42 so that the bearing 41 of the other link 42 is rotatably fitted. The links 13 may be sequentially connected to form the chain 13. According to this configuration, the links 42 can be rotatably connected to each other without requiring a separate member from the links 42 such as the pins 19 of the above-described embodiment, so that the number of parts of the chain 13 can be reduced.
　リンク４２の構成を詳述すると、図７に示すように、リンク４２の軸部４０は、左右方向（軸線方向）に延びている。軸部４０の中央部４０ａは、軸部４０の両端部４０ｂよりも小さな外径を有している。軸部４０の中央部４０ａと本体部２０との間には、軸受部４１が挿入可能な隙間が形成されている。軸部４０の両端部４０ｂは、本体部２０の左右両側面よりも左右方向の外側に突出している。軸部４０の両端部４０ｂは、図１に示した一対のガイド板１２のガイド溝１７にそれぞれ摺動可能に挿入されるとともに、一対のスプロケット１４と噛合可能とされている。軸部４０の中央部４０ａの左右方向の長さは、軸受部４１の左右方向の長さよりも僅かに長くなっている。そして、直列方向で隣り合う２つのリンク４２同士は、一方のリンク４２の軸部４０の中央部４０ａに他方のリンク４２の軸受部４１を回動可能に嵌合させることによって連結される。 The structure of the link 42 will be described in detail. As shown in FIG. 7, the shaft 40 of the link 42 extends in the left-right direction (axial direction). The central portion 40a of the shaft portion 40 has an outer diameter smaller than the both end portions 40b of the shaft portion 40. A gap is formed between the central portion 40a of the shaft portion 40 and the main body portion 20 so that the bearing portion 41 can be inserted. Both end portions 40b of the shaft portion 40 protrude outward in the left-right direction from the left and right side surfaces of the main body portion 20. Both end portions 40b of the shaft portion 40 are slidably inserted into the guide grooves 17 of the pair of guide plates 12 shown in FIG. 1, respectively, and can mesh with the pair of sprockets 14. The length of the central portion 40a of the shaft portion 40 in the left-right direction is slightly longer than the length of the bearing portion 41 in the left-right direction. The two links 42 adjacent to each other in the serial direction are connected to each other by rotatably fitting the bearing 41 of the other link 42 to the center 40 a of the shaft 40 of one link 42.
　・チェーン１３が進行方向Ｚ１に移動されることにより複数のリンク１８が直線構造体２４を形成したときに、直線構造体２４を形成する各リンク１８の回動規制部２１が、そのリンク１８よりも進行方向Ｚ１における３つ以上前方に配置された他のリンク１８と係合することによって当該係合したリンク１８のピン１９側への回動を規制するように、チェーン１３を構成する各リンク１８を構成してもよい。 When the plurality of links 18 form the linear structure 24 by moving the chain 13 in the traveling direction Z1, the rotation restricting portions 21 of the links 18 forming the linear structure 24 Each of the links constituting the chain 13 is configured to engage with at least three other links 18 arranged forward in the traveling direction Z1 so as to restrict the rotation of the engaged link 18 toward the pin 19. 18 may be configured.
　・第１掛止部２８及び第２掛止部２７は、互いに着脱自在に凹凸嵌合可能な第１嵌合部及び第２嵌合部にそれぞれ変更してもよい。
　・チェーン駆動装置１１は、何れの向きに配置して使用してもよい。すなわち、チェーン駆動装置１１は、例えば、進行方向Ｚ１が鉛直方向と一致するように配置して使用してもよいし、進行方向Ｚ１が鉛直方向と交差するように配置して使用してもよい。 -The 1st latching part 28 and the 2nd latching part 27 may be changed to the 1st fitting part and the 2nd fitting part, respectively, which can be detachably fitted to each other.
-The chain drive device 11 may be arranged and used in any direction. That is, for example, the chain drive device 11 may be used by being arranged so that the traveling direction Z1 coincides with the vertical direction, or may be used by being arranged so that the traveling direction Z1 intersects with the vertical direction. .
　１１，４２…チェーン駆動装置、１３…チェーン、１４…スプロケット、１５…チェーン収容部、１８…リンク、２１…回動規制部、２４…直線構造体、２７…第２掛止部、２８…第１掛止部、４０…軸部、４１…軸受部、Ｚ１…進行方向、Ｚ２…退行方向。 11, 42: chain drive device, 13: chain, 14: sprocket, 15: chain housing portion, 18: link, 21: rotation restricting portion, 24: linear structure, 27: second engaging portion, 28: second 1 Hook, 40 ... Shaft, 41 ... Bearing, Z1: Traveling direction, Z2: Retreating direction.

Claims (5)

  1. 　直列に配置された複数のリンクを有し、直列方向で隣り合うリンク同士は回動可能に連結されており、前記直列方向と交差する方向の第１の側には屈曲可能である一方、前記第１の側とは逆の第２の側には屈曲不能とされ、前記直列方向に進退移動させて使用されるチェーンであって、
    　各リンクは回動規制部を備え、
    　前記チェーンが進行方向に移動されることにより複数のリンクが直線状に並ぶように配置されて直線構造体を形成したときに、前記直線構造体を形成する各リンクの前記回動規制部は、そのリンクよりも前記進行方向における２つ以上前方に配置された他のリンクと係合することによって当該係合したリンクの前記第１の側への回動を規制することを特徴とするチェーン。     While having a plurality of links arranged in series, the links adjacent in the series direction are rotatably connected to each other, and can be bent to a first side in a direction intersecting the series direction, A chain that is not bendable on a second side opposite to the first side and is used by being moved forward and backward in the serial direction,
    Each link has a rotation restricting part,
    When the chain is moved in the traveling direction, a plurality of links are arranged so as to be linearly arranged to form a linear structure, and the rotation restricting portion of each link forming the linear structure, A chain, wherein the chain is engaged with another link that is disposed two or more ahead of the link in the traveling direction, thereby restricting rotation of the engaged link toward the first side.
  2. 　各リンクの前記回動規制部は、第１掛止部を有し、
    　各リンクは、そのリンクよりも前記進行方向における２つ以上後方に配置された他のリンクの前記回動規制部の前記第１掛止部によって掛止可能な第２掛止部を有していることを特徴とする請求項１に記載のチェーン。     The rotation restricting portion of each link has a first latch portion,
    Each link has a second hook portion that can be hooked by the first hook portion of the rotation restricting portion of another link that is arranged two or more behind the link in the traveling direction. The chain according to claim 1, wherein
  3. 　複数のリンクが前記直線構造体を形成したときに、前記直線構造体を形成する各リンクの前記回動規制部は、そのリンクよりも前記進行方向における２つ以上前方に配置された他のリンクの前記第１の側への回動を磁力によって規制することを特徴とする請求項１に記載のチェーン。 When a plurality of links form the linear structure, the rotation restricting portions of the links that form the linear structure are other links that are arranged two or more links forward in the traveling direction from the link. 2. The chain according to claim 1, wherein the rotation of the chain toward the first side is restricted by a magnetic force.
  4. 　各リンクは、軸部及び軸受部を備え、
    　前記直列方向で隣り合う２つのリンク同士は、一方のリンクの前記軸部に他方のリンクの前記軸受部が回動可能に嵌合することによって連結されていることを特徴とする請求項１～請求項３のうちいずれか一項に記載のチェーン。     Each link includes a shaft and a bearing,
    The two links that are adjacent in the serial direction are connected to each other by rotatably fitting the shaft of one link with the bearing of the other link. The chain according to claim 3.
  5. 　請求項１～請求項４のうちいずれか一項に記載のチェーンと、
    　前記チェーンと噛合し、第１回転方向及び前記第１回転方向とは反対の第２回転方向に回転可能なスプロケットと、
    　前記チェーンを収容可能なチェーン収容部と、
    を備え、
    　各リンクは、前記スプロケットが前記第１回転方向に回転された場合に前記進行方向に移動されて前記直線構造体を形成し、前記スプロケットが前記第２回転方向に回転された場合に前記進行方向とは反対の退行方向に移動されて前記チェーン収容部に収容されることを特徴とするチェーン駆動装置。     A chain according to any one of claims 1 to 4,
    A sprocket meshing with the chain and rotatable in a first rotation direction and a second rotation direction opposite to the first rotation direction;
    A chain housing portion capable of housing the chain,
    With
    Each link is moved in the traveling direction when the sprocket is rotated in the first rotation direction to form the linear structure, and is moved in the traveling direction when the sprocket is rotated in the second rotation direction. A chain drive device which is moved in a retreating direction opposite to the above and is housed in the chain housing portion.
PCT/JP2019/025008 2018-06-27 2019-06-24 Chain and chain drive device WO2020004348A1 (en)

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JP2018122360A JP2020002988A (en) 2018-06-27 2018-06-27 Chain and chain drive unit
JP2018-122360 2018-06-27

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2481471A (en) * 1947-04-18 1949-09-06 James B Humphrey Boom
US20080199295A1 (en) * 2007-02-20 2008-08-21 Jon Scott Single chain linear actuator
US20090211220A1 (en) * 2008-02-27 2009-08-27 Jon Scott Link for a linear actuator
JP2016125589A (en) * 2014-12-29 2016-07-11 ライフロボティクス株式会社 Direct-acting expansion mechanism and robot arm mechanism
JP2016209970A (en) * 2015-05-12 2016-12-15 ライフロボティクス株式会社 Robot arm mechanism

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2481471A (en) * 1947-04-18 1949-09-06 James B Humphrey Boom
US20080199295A1 (en) * 2007-02-20 2008-08-21 Jon Scott Single chain linear actuator
US20090211220A1 (en) * 2008-02-27 2009-08-27 Jon Scott Link for a linear actuator
JP2016125589A (en) * 2014-12-29 2016-07-11 ライフロボティクス株式会社 Direct-acting expansion mechanism and robot arm mechanism
JP2016209970A (en) * 2015-05-12 2016-12-15 ライフロボティクス株式会社 Robot arm mechanism

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