WO2020031878A1 - Meshing chain and movable body movement device - Google Patents

Meshing chain and movable body movement device Download PDF

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Publication number
WO2020031878A1
WO2020031878A1 PCT/JP2019/030422 JP2019030422W WO2020031878A1 WO 2020031878 A1 WO2020031878 A1 WO 2020031878A1 JP 2019030422 W JP2019030422 W JP 2019030422W WO 2020031878 A1 WO2020031878 A1 WO 2020031878A1
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WO
WIPO (PCT)
Prior art keywords
meshing
chain
engagement
link plate
engagement surface
Prior art date
Application number
PCT/JP2019/030422
Other languages
French (fr)
Japanese (ja)
Inventor
宏之 新田
中原　隆
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 WO2020031878A1 publication Critical patent/WO2020031878A1/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
    • B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
    • B66F7/10—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported directly by jacks
    • B66F7/12—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported directly by jacks by mechanical jacks
    • 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 relates to a meshing chain and a movable body moving device that moves a movable body using the meshing chain.
  • a meshing chain type forward / backward operating device disclosed in Patent Document 1
  • a pair of reciprocating meshing chains (chain members) mesh with each other as they move in the advancing direction and are integrated with each other, while being disengaged with each other as they move in the retreating direction.
  • the lifting table is raised and lowered by branching.
  • the meshing chain is constituted by a plurality of link plates connected in the longitudinal direction of the meshing chain.
  • each link plate has a pair of pin holes. Adjacent link plates are connected to each other at a pin hole by a connecting pin so as to be bendable.
  • Each link plate has a flat hook-shaped meshing end surface (meshing surface) and a flat buckling regulating end surface (engaging surface).
  • the hook-shaped meshing end surface is provided at one end of the link plate in the advancing and retreating direction, and is curved in an S shape.
  • the buckling restricting end face is provided at the other end of the link plate in the reciprocating direction, and extends linearly in a direction obliquely intersecting the reciprocating direction.
  • the link plate of one meshing chain of the pair of meshing chains in a state where the pair of meshing chains are meshed with each other along with the movement in the traveling direction and integrated, the link plate of one meshing chain of the pair of meshing chains.
  • the hook-shaped meshing end face meshes with the hook-shaped meshing end face of the link plate of the other meshing chain.
  • the hook-shaped meshing end faces of the link plate are flat, and the hook-shaped meshing end faces are adjacent to each other at the hook-shaped meshing end faces.
  • the pair of meshing chains in an integrated state may buckle. Therefore, there is room for improvement in improving the buckling load of the pair of interlocking chains in an integrated state.
  • An object of the present disclosure is to provide a meshing chain and a movable body moving device that can improve a buckling load in a state where chain members are meshed with each other and integrated.
  • a meshing chain that solves the above-mentioned problem has at least a pair of chain members that can advance and retreat, and the paired chain members move in the traveling direction to mesh with each other to be integrated, while the integrated meshing is performed.
  • An interlocking chain in which the chain members move in the retreating direction from each other to be disengaged from each other and branch off, wherein each chain member has a plurality of link plates each having a pair of pin holes arranged in the advancing and retreating directions.
  • each link plate has a meshing surface at one end in the advance / retreat direction. Having an engagement surface extending in a direction orthogonal to the connection pin at the other end in the advance / retreat direction, and forming the pair In a state where the chain members are meshed and integrated, the chain members mesh with each other at the meshing surfaces of the link plates and engage with each other at the engagement surfaces of the link plates to form a pair.
  • the link plate of one of the chain members is a first link plate
  • the link plate of the other chain member is a second link plate
  • the engagement surface of the first link plate is Is a first engagement surface
  • the engagement surface of the second link plate is a second engagement surface
  • the first engagement surface has an engagement recess extending along the first engagement surface.
  • the second engaging surface has an engaging convex portion which is fitted to the engaging concave portion when the first engaging surface and the second engaging surface are engaged with each other.
  • the second engagement surface It is provided so as to extend.
  • a meshing chain that solves the above-mentioned problem has at least a pair of chain members that can advance and retreat, and the paired chain members move in the traveling direction to mesh with each other to be integrated, while the integrated meshing is performed.
  • An interlocking chain in which the chain members move in the retreating direction from each other to be disengaged from each other and branch off.
  • a plurality of link plates, and the plurality of link plates are rotatably connected in series in the pin holes by the connection pins, and each link plate is provided at one end in the advance / retreat direction with the connection pins.
  • the chain members forming a pair In a state where the chain members forming a pair are meshed and integrated with each other, the chain members mesh with each other at the meshing surfaces of the link plates, and the link plates are formed.
  • the link plate of one of the chain members is a first link plate
  • the link plate of the other chain member is a second link plate.
  • the engagement surface of the first link plate is a first engagement surface
  • the engagement surface of the second link plate is a second engagement surface
  • the first engagement surface includes the first engagement surface.
  • the second meshing surface is fitted with the meshing projection when the first meshing surface and the second meshing surface are meshed with each other. Coupling concave portion which is provided so as to extend along said second engagement surface.
  • the engaging surface is provided with an uneven surface that suppresses a displacement of the link plates engaged with each other on the engaging surface in a direction in which the engaging surface extends.
  • the uneven surface is a curved surface. According to this configuration, when the chain members mesh with each other and are integrated, the uneven surfaces provided on the engagement surfaces of the respective link plates can be smoothly fitted together.
  • a movable body moving device that solves the above problem includes the meshing chain, and a movable body that is connected to the meshing chain and that can move in the direction of movement of the meshing chain together with the meshing chain.
  • FIG. 4 is a front view showing a state where the meshing chain has moved in the traveling direction in the movable body moving device of the embodiment.
  • FIG. 6 is a front view showing a state where the meshing chain has moved in a retreating direction in the movable body moving device.
  • FIG. 4 is a perspective view showing a part of a meshing chain which constitutes the movable body moving device. The perspective view of a 1st link plate. The perspective view of a 2nd link plate.
  • FIG. 4 is a perspective view showing a state where a first engagement surface of a first link plate and a second engagement surface of a second link plate are engaged.
  • FIG. 4 is a perspective view showing a state where a first meshing surface of a first link plate and a second meshing surface of a second link plate are meshed.
  • the movable body moving device 11 includes a meshing chain 12, a housing 13 arranged in a fixed state, and a movable body 15 connected to a distal end portion of the meshing chain 12 via a joint link 14. It has.
  • the meshing chain 12 has a pair of chain members 12A and 12B that can mesh with each other, and can move forward and backward along the longitudinal direction.
  • the meshing chain 12 in which the paired chain members 12A and 12B mesh with each other and are in an integrated meshing state is referred to as a meshing meshing chain 12.
  • the moving direction of the meshing chain 12 when the movable body 15 is moved is referred to as a moving direction Z.
  • the traveling direction of the meshing chain 12 (upward in FIG. 1) is referred to as the traveling direction Z1
  • the retreating direction of the meshing chain 12 (downward in FIG. 1) is referred to as the retreating direction Z2.
  • a branch direction X In the direction orthogonal to the advance / retreat direction Z, the direction in which the mesh members 12A, 12B are disengaged from each other and branched when the meshing mesh 12 is moved in the retreat direction Z2 is referred to as a branch direction X (FIG. 1). In the left and right directions). Further, a direction orthogonal to both the forward / backward direction Z and the branching direction X is referred to as a front-rear direction Y (a direction orthogonal to the paper surface in FIG. 1). 1 and 2, the exterior of the housing 13 is not shown, and the internal configuration of the housing 13 is shown.
  • the housing 13 is configured to be able to house the meshing chain 12.
  • a sprocket 16 is provided at a central portion in the branching direction X in the housing portion 13 so as to mesh with the chain member 12B (the meshing chain 12).
  • the sprocket 16 is rotatable in both forward and reverse directions about an axis extending in the front-rear direction Y, and is driven to rotate in both forward and reverse directions by a motor (not shown). Then, the meshing chain 12 advances and retreats in the advance and retreat direction Z as the sprocket 16 rotates.
  • the accommodating portion 13 is provided with a guide plate 17 which is substantially the same rectangular shape as the exterior (not shown) in the front-rear direction Y.
  • a pair of guide grooves 18 are provided on the inner surface of the guide plate 17 so as to be substantially symmetrical in FIG.
  • the pair of guide grooves 18 has a spiral portion that can guide the pair of chain members 12A and 12B so that the pair of chain members 12A and 12B branched from the meshed state move while spirally moving.
  • a pair of guide grooves 18 are provided on the inner side surface of the exterior (not shown) so as to correspond to the pair of guide grooves 18 of the guide plate 17. Therefore, two pairs of guide grooves 18 facing each other in the front-rear direction Y are provided on both inner side surfaces in the front-rear direction Y of the housing portion 13.
  • An opening 19 through which the meshing chain 12 passes is formed substantially at the center of the housing 13 in the branching direction X on the surface on the side of the traveling direction Z1.
  • a chain of chain members is employed as the chain member 12A constituting the meshing chain 12.
  • the chain member 12A has a plurality of first link plates 22 as a plurality of link plates, and a plurality of cylindrical connection pins 23.
  • Each first link plate 22 has a pair of circular pin holes 21 arranged in the reciprocating direction Z.
  • the plurality of first link plates 22 are rotatably connected in series in the pin holes 21 by connecting pins 23.
  • the plurality of first link plates 22 constituting the chain member 12A are arranged so as to be opposed to each other in the front-rear direction Y two by two, and to be paired with each other.
  • the plurality of pairs of first link plates 22 include a first link plate 22 forming a pair with a relatively small interval and a first link plate 22 forming a pair with a relatively large interval.
  • the pair of first link plates 22 having a relatively small interval and the pair of first link plates 22 having a relatively large interval are formed in the longitudinal direction such that the respective pin holes 21 overlap in the front-rear direction Y. A plurality of them are alternately arranged.
  • the chain member 12A is assembled by fitting the connection pins 23 into the pin holes 21 overlapping in the front-rear direction Y.
  • connection pin 23 is non-rotatably fitted into the pair of first link plates 22 having a relatively wide interval, that is, the pin holes 21 of the pair located outside on the outer side in the front-rear direction Y. Have been.
  • the connecting pin 23 is rotatably fitted in the first link plate 22 forming a pair having a relatively narrow interval, that is, in the pin hole 21 of the first link plate 22 forming the pair located inside in the front-rear direction Y. ing.
  • connection pin 23 projects outside the pair of first link plates 22 located outside in the front-rear direction Y.
  • the chain member 12 ⁇ / b> A is housed in the housing portion 13
  • the first link plate 22 has a cutout recess 24 formed in a substantially U-shape at the end in the traveling direction Z1 side.
  • the bottom surface of the cutout recess 24 forms a part of an end surface forming the contour of the first link plate 22 and forms a first engagement surface 25 as an engagement surface. That is, the first link plate 22 has the first meshing surface 25 at one end in the advance / retreat direction Z.
  • a meshing projection 26 extending along the longitudinal direction of the first meshing surface 25 is formed.
  • the first link plate 22 has a first engagement surface 27 at an end on the retreating direction Z2 side as an engaging surface extending so as to obliquely intersect the reciprocating direction Z. That is, the first link plate 22 has the first engagement surface 27 at the other end in the advance / retreat direction Z.
  • the first engagement surface 27 extends in a direction orthogonal to the front-rear direction Y that matches the direction in which the connecting pin 23 extends.
  • the first engagement surface 27 forms a part of an end surface forming the contour of the first link plate 22, and is formed by a corrugated curved surface as an uneven surface.
  • an engagement recess 28 extending along the longitudinal direction of the first engagement surface 27 is formed.
  • the bottom surface of the engagement recess 28 is formed by a curved surface having a waveform corresponding to the first engagement surface 27.
  • a chain member in a row is employed as the chain member 12B constituting the meshing chain 12, similarly to the chain member 12A.
  • the chain member 12B has a plurality of second link plates 30 as a plurality of link plates, and a plurality of cylindrical connection pins 23.
  • Each second link plate 30 has a pair of circular pin holes 29 arranged in the reciprocating direction Z.
  • the plurality of second link plates 30 are rotatably connected in series in the pin holes 29 by the connecting pins 23.
  • the plurality of second link plates 30 configuring the chain member 12B are arranged so as to be opposed to each other in the front-rear direction Y by two, and to be paired with each other.
  • the plurality of pairs of second link plates 30 include a second link plate 30 forming a pair with a relatively small interval and a second link plate 30 forming a pair with a relatively large interval.
  • the pair of second link plates 30 having a relatively small interval and the pair of second link plates 30 having a relatively large interval are arranged in the longitudinal direction such that the respective pin holes 29 overlap in the front-rear direction Y. A plurality of them are alternately arranged.
  • the chain member 12B is assembled by fitting the connection pins 23 into the pin holes 29 overlapping in the front-rear direction Y.
  • connection pin 23 is non-rotatably fitted into the second link plate 30 forming a pair having a relatively wide interval, that is, the pin hole 29 of the second link plate 30 forming a pair located outside in the front-rear direction Y.
  • the connecting pin 23 is rotatably fitted into the second link plate 30 forming a pair having a relatively small interval, that is, the pin hole 29 of the second link plate 30 forming the pair located inside in the front-rear direction Y. ing.
  • connection pin 23 projects outside the pair of second link plates 30 located outside in the front-rear direction Y.
  • both ends of the connecting pins 23 are the other of the two pairs of guide grooves 18 facing each other in the front-rear direction Y in the housing portion 13.
  • the second link plate 30 has a cutout recessed portion 31 cut out in a substantially U-shape at the end in the retreating direction Z2.
  • the bottom surface of the cutout recess 31 forms a part of an end face forming the contour of the second link plate 30 and forms a second meshing surface 32 as a meshing surface. That is, the second link plate 30 has the second engagement surface 32 at one end in the advance / retreat direction Z.
  • a meshing recess 33 extending along the longitudinal direction of the second meshing surface 32 is formed.
  • the meshing concave portion 33 is fitted with the meshing convex portion 26 when the second meshing surface 32 of the second link plate 30 meshes with the first meshing surface 25 of the first link plate 22.
  • the second link plate 30 has a second engagement surface 34 at an end on the side of the traveling direction Z1 as an engagement surface extending so as to obliquely intersect the advancing / retreating direction Z. That is, the second link plate 30 has the second engagement surface 34 at the other end in the advance / retreat direction Z.
  • the second engagement surface 34 extends in a direction orthogonal to the front-rear direction Y that matches the direction in which the connecting pin 23 extends.
  • the second engagement surface 34 constitutes a part of an end surface forming the contour of the second link plate 30, and is constituted by a corrugated curved surface as an uneven surface.
  • An engagement protrusion 35 extending along the longitudinal direction of the second engagement surface 34 is formed at the center of the second engagement surface 34 in the front-rear direction Y (the thickness direction of the second link plate 30). .
  • the engagement projection 35 is fitted to the engagement recess 28 when the second engagement surface 34 of the second link plate 30 and the first engagement surface 27 of the first link plate 22 are engaged.
  • the distal end surface of the engagement projection 35 is formed by a curved surface having a waveform corresponding to the second engagement surface 34.
  • the meshing chain 12 includes a plurality of first link plates 22 corresponding to the pair of chain members 12A and 12B as the pair of chain members 12A and 12B move in the traveling direction Z1.
  • the plurality of second link plates 30 mesh with each other, a meshing state of a rigid structure integrated into a straight rod shape is obtained.
  • the pair of chain members 12A and 12B are connected to each other by the first engagement surface 25 of the first link plate 22 and the second engagement surface of the second link plate 30. At 32 it engages. Further, the pair of chain members 12A and 12B are engaged with each other at the first engagement surface 27 of the first link plate 22 and the second engagement surface 34 of the second link plate 30.
  • the first engagement surface 27 of the first link plate 22 and the second engagement surface 34 of the second link plate 30 are formed by corrugated curved surfaces that can be fitted to each other. Therefore, when the first engagement surface 27 of the first link plate 22 and the second engagement surface 34 of the second link plate 30 are engaged, the first engagement surface 27 and the second engagement surface 34 Are unevenly fitted to each other, whereby the displacement of the first link plate 22 and the second link plate 30 in the direction in which the first engagement surface 27 and the second engagement surface 34 extend is suppressed.
  • the end of the engagement chain 12 on the side of the longitudinal direction Z ⁇ b> 1 in the longitudinal direction is connected to the movable body 15.
  • Various functional members for example, a lifting table and a crane
  • the movable body 15 moves in the advance / retreat direction Z with the advance / retreat of the meshing chain 12
  • the functional member attached to the movable body 15 also moves in the advance / retreat direction Z together with the movable body 15.
  • first meshing surface 25 of the first link plate 22 and the second meshing surface 32 of the second link plate 30 corresponding to each other in the pair of chain members 12A and 12B sequentially mesh with each other.
  • the first engagement surface 27 and the second engagement surface 34 of the second link plate 30 are sequentially engaged, and the meshing chain 12 is in the meshing state as shown in FIG.
  • the first engagement surface 27 of the first link plate 22 and the second engagement surface 34 of the second link plate 30 are formed by a corrugated curved surface which is a concave and convex surface that can be fitted to each other. It is configured. Therefore, when the first engagement surface 27 and the second engagement surface 34 are engaged, the first engagement surface 27 and the second engagement surface 34 are fitted into the first engagement surface. The displacement between the first link plate 22 and the second link plate 30 in the direction in which the mating surface 27 and the second engagement surface 34 extend is suppressed.
  • the first link plate in the front-rear direction Y (the direction in which the connecting pin 23 extends) is formed by the engagement between the engagement concave portion 28 and the engagement convex portion 35 and the engagement between the engagement concave portion 33 and the engagement convex portion 26.
  • the displacement between the second link plate 30 and the second link plate 30 is effectively suppressed.
  • the engagement between the first engagement surface 27 and the second engagement surface 34, the engagement between the engagement concave portion 28 and the engagement convex portion 35, and the engagement between the engagement concave portion 33 and the engagement convex portion 26 As a result, the buckling load of the meshing chain 12 is improved, so that even if a compressive load in the reciprocating direction Z acts on the meshing chain 12 when the meshing chain 12 is in the straight rod-like meshing state, the meshing chain 12 is It becomes difficult to buckle.
  • an engagement recess 28 extending along the first engagement surface 27 is provided on the first engagement surface 27 of the first link plate 22 of the chain member 12A.
  • a portion 35 is provided so as to extend along the second engagement surface 34.
  • the first meshing surface 25 of the first link plate 22 of the chain member 12A is provided with a meshing projection 26 extending along the first meshing surface 25.
  • the second meshing surface 32 of the second link plate 30 of the chain member 12B has a second meshing concave portion 33 which is fitted with the meshing convex portion 26 when the first meshing surface 25 and the second meshing surface 32 mesh with each other. It is provided so as to extend along the surface 32. According to this configuration, when the chain members 12 ⁇ / b> A and 12 ⁇ / b> B mesh with each other on the first meshing surface 25 of the first link plate 22 and the second meshing surface 32 of the second link plate 30, the meshing projection 26 and the meshing recess 33 are formed. Are fitted.
  • the first engagement surface 27 of the first link plate 22 of the chain member 12A and the second engagement surface 34 of the second link plate 30 of the chain member 12B are provided.
  • An uneven surface is provided for suppressing displacement of the link plates 22, 30 in the direction in which the engaging surfaces 27, 34 in which the link plates 22, 30 engage with each other.
  • the concave and convex surfaces provided on the engaging surfaces 27 and 34 of the link plates 22 and 30 are fitted.
  • the chain members 12A and 12B mesh and are integrated. It can contribute to the improvement of the buckling load in the state.
  • the uneven surfaces provided on the engagement surfaces 27 and 34 are corrugated curved surfaces. According to this configuration, when the chain members 12A and 12B mesh with each other and are integrated, the uneven surfaces provided on the engagement surfaces 27 and 34 of the link plates 22 and 30 are smoothly fitted to each other. Can be.
  • the above embodiment may be modified as follows. As shown in FIGS. 8 and 9, the first engagement surface 27 of the first link plate 22 and the second engagement surface 34 of the second link plate 30 may be constituted by flat surfaces instead of curved surfaces. Good.
  • the bottom surface of the engagement recess 28 of the first engagement surface 27 of the first link plate 22 and the engagement protrusion 35 of the second engagement surface 34 of the second link plate 30 The tip surface may be formed by a flat surface instead of a curved surface of a waveform. In this case, one of the two surfaces of the first engagement surface 27 on both sides of the engagement concave portion 28 and one of the two surfaces of the second engagement surface 34 on both sides of the engagement protrusion 35 are connected. Instead, the surfaces may be constituted by flat surfaces instead of curved surfaces so as to correspond to each other.
  • the meshing convex portion 26 in the first link plate 22 and the meshing concave portion 33 in the second link plate 30 may be omitted.
  • the engagement recess 28 in the first link plate 22 and the engagement protrusion 35 in the second link plate 30 may be omitted.
  • the uneven surface provided on the first engagement surface 27 of the first link plate 22 and the second engagement surface 34 of the second link plate 30 does not necessarily have to be a wavy curved surface.
  • the uneven surface provided on the first engagement surface 27 of the first link plate 22 and the second engagement surface 34 of the second link plate 30 may be a sawtooth surface.
  • the engagement chain 12 may include a roller through which the connection pin 23 is inserted.
  • the chain members 12A and 12B constituting the meshing chain 12 may be two or more rows of chain members.
  • the meshing chain 12 may be constituted by two or more pairs of chain members 12A and 12B.
  • a chain member 12A is formed by connecting a plurality of pairs of first link plates 22 in series via a connection pin 23 and a cylindrical bush through which the connection pin 23 is inserted, thereby forming a chain member 12A, and a plurality of pairs of second links.
  • the chain member 12B may be formed by connecting the plates 30 in series via a connecting pin 23 and a cylindrical bush through which the connecting pin 23 is inserted so as to be rotatable in series. That is, the engagement chain 12 may be a so-called bush type chain.
  • the movable body moving device 11 may be arranged in any direction.
  • the movable body moving device 11 may be arranged so that the moving direction Z coincides with the horizontal direction, or the moving body moving device 11 may be arranged so that the moving direction Z intersects the horizontal direction.
  • Reference numeral 11 movable body moving device, 12: meshing chain, 12A, 12B: chain member, 15: movable body, 22: first link plate as link plate, 30: second link plate as link plate, 21, 29 ... Pin holes, 23 connecting pins, 25 first engaging surfaces as engaging surfaces, 26 engaging convex portions, 27 first engaging surfaces as engaging surfaces, 28 engaging concave portions, 32 as engaging surfaces Second engaging surface, 33: engaging concave portion, 34: second engaging surface as an engaging surface, 35: engaging convex portion, 40: link plate, Z: forward / backward direction, Z1: forward direction, Z2: backward 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

This meshing chain (12) comprises at least a pair of chain members (12A, 12B) capable of advancing and retreating. Each of the chain members (12A, 12B) is provided with: a plurality of link plates (22, 30) each comprising a pair of pin holes (21, 29); and a plurality of connecting pins (23). Each of the link plates (22, 30) comprises meshing surfaces (25, 32) on one end in an advance-retreat direction (Z) and engagement surfaces (27, 34) on the other end in the advance-retreat direction (Z). Among chain members (12A, 12B) forming a pair, the link plates of one chain member (12A) are first link plates (22) and the link plates of the other chain member (12B) are second link plates (30). First engagement surfaces (27) in the first link plates (22) are provided with engagement recesses (28) extending along said first engagement surfaces (27). Second engagement surfaces (34) in the second link plates (30) are provided with engagement protrusions (35) that extend along said second engagement surfaces (34) and that are fitted together with the engagement recesses (28) when the first engagement surfaces (27) and the second engagement surfaces (34) engage.

Description

噛合チェーン及び可動体移動装置Interlocking chain and movable body moving device
　本開示は、噛合チェーン及び当該噛合チェーンを用いて可動体を移動させる可動体移動装置に関する。 The present disclosure relates to a meshing chain and a movable body moving device that moves a movable body using the meshing chain.
　従来、この種の可動体移動装置として、例えば特許文献１に示す噛合チェーン式進退作動装置が知られている。このような噛合チェーン式進退作動装置では、進退可能な一対の噛合チェーン（チェーン部材）が進行方向への移動に伴い相互に噛み合って一体化する一方で退行方向への移動に伴い相互に噛み外れて分岐することにより昇降テーブルが昇降されるようになっている。 Conventionally, as this type of movable body moving device, for example, a meshing chain type forward / backward operating device disclosed in Patent Document 1 is known. In such a meshing chain type reciprocating operation device, a pair of reciprocating meshing chains (chain members) mesh with each other as they move in the advancing direction and are integrated with each other, while being disengaged with each other as they move in the retreating direction. The lifting table is raised and lowered by branching.
　こうした噛合チェーンは、噛合チェーンの長手方向に連結された複数のリンクプレートにより構成されている。詳しくは、各リンクプレートは一対のピン孔を有している。隣り合うリンクプレート同士は屈曲可能に連結ピンによりピン孔において連結されている。各リンクプレートは、平坦なフック状噛合端面（噛合面）と、平坦な座屈規制端面（係合面）とを有している。フック状噛合端面は、リンクプレートの進退方向における一端部に設けられており、Ｓ字状に湾曲している。座屈規制端面は、リンクプレートの進退方向における他端部に設けられており、進退方向に対して斜めに交差する方向に直線状に延びている。 The meshing chain is constituted by a plurality of link plates connected in the longitudinal direction of the meshing chain. Specifically, each link plate has a pair of pin holes. Adjacent link plates are connected to each other at a pin hole by a connecting pin so as to be bendable. Each link plate has a flat hook-shaped meshing end surface (meshing surface) and a flat buckling regulating end surface (engaging surface). The hook-shaped meshing end surface is provided at one end of the link plate in the advancing and retreating direction, and is curved in an S shape. The buckling restricting end face is provided at the other end of the link plate in the reciprocating direction, and extends linearly in a direction obliquely intersecting the reciprocating direction.
特開２０１２－２３７４０６号公報JP 2012-237406 A
　ところで、上述のような噛合チェーン式進退作動装置において、一対の噛合チェーンが進行方向への移動に伴い相互に噛み合って一体化した状態では、一対の噛合チェーンのうち一方の噛合チェーンのリンクプレートのフック状噛合端面と、他方の噛合チェーンのリンクプレートのフック状噛合端面とが噛合する。 By the way, in the meshing chain type reciprocating operation device as described above, in a state where the pair of meshing chains are meshed with each other along with the movement in the traveling direction and integrated, the link plate of one meshing chain of the pair of meshing chains. The hook-shaped meshing end face meshes with the hook-shaped meshing end face of the link plate of the other meshing chain.
　そして、一体化した状態の一対の噛合チェーンに対して進退方向の高い圧縮荷重が作用した場合には、リンクプレートのフック状噛合端面が平坦であるため、フック状噛合端面において互いに噛合した隣り合う２つのリンクプレート同士が連結ピンの延びる方向に滑ることによって一体化した状態の一対の噛合チェーンが座屈するおそれがある。このため、一体化した状態の一対の噛合チェーンの座屈荷重を向上する上では改善の余地が残されている。 When a high compressive load in the forward and backward directions is applied to the pair of meshing chains in an integrated state, the hook-shaped meshing end faces of the link plate are flat, and the hook-shaped meshing end faces are adjacent to each other at the hook-shaped meshing end faces. When the two link plates slide in the direction in which the connecting pin extends, the pair of meshing chains in an integrated state may buckle. Therefore, there is room for improvement in improving the buckling load of the pair of interlocking chains in an integrated state.
　本開示の目的は、チェーン部材同士が噛み合って一体化された状態での座屈荷重を向上することができる噛合チェーン及び可動体移動装置を提供することにある。 An object of the present disclosure is to provide a meshing chain and a movable body moving device that can improve a buckling load in a state where chain members are meshed with each other and integrated.
　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噛合チェーンは、進退可能な少なくとも一対のチェーン部材を有し、対をなす前記チェーン部材同士が進行方向に移動することで相互に噛み合って一体化する一方、その一体化した噛合状態から前記チェーン部材同士が退行方向に移動することで相互に噛み外れて分岐する噛合チェーンであって、各チェーン部材は、進退方向に並ぶ一対のピン孔をそれぞれ有する複数のリンクプレートと、複数の連結ピンとを備えるとともに、前記複数のリンクプレートが前記ピン孔において前記連結ピンによって回動自在に直列に連結されて形成されており、各リンクプレートは、前記進退方向における一端部に噛合面を有するとともに前記進退方向における他端部に前記連結ピンと直交する方向に延びる係合面を有し、対をなす前記チェーン部材同士が噛み合って一体化された状態では、前記チェーン部材同士が、それらの前記リンクプレートの前記噛合面において噛合するとともにそれらの前記リンクプレートの前記係合面において係合し、対をなす前記チェーン部材のうち、一方の前記チェーン部材の前記リンクプレートは第１リンクプレートであり、他方の前記チェーン部材の前記リンクプレートは第２リンクプレートであり、前記第１リンクプレートの前記係合面は第１係合面であり、前記第２リンクプレートの前記係合面は第２係合面であり、前記第１係合面には、前記第１係合面に沿って延びる係合凹部が設けられており、前記第２係合面には、前記第１係合面と前記第２係合面とが係合した場合に前記係合凹部と嵌合される係合凸部が前記第２係合面に沿って延びるように設けられている。 Hereinafter, means for solving the above-described problems and the effects thereof will be described.
A meshing chain that solves the above-mentioned problem has at least a pair of chain members that can advance and retreat, and the paired chain members move in the traveling direction to mesh with each other to be integrated, while the integrated meshing is performed. An interlocking chain in which the chain members move in the retreating direction from each other to be disengaged from each other and branch off, wherein each chain member has a plurality of link plates each having a pair of pin holes arranged in the advancing and retreating directions. And a plurality of link plates are formed so as to be rotatably connected in series in the pin holes by the connection pins, and each link plate has a meshing surface at one end in the advance / retreat direction. Having an engagement surface extending in a direction orthogonal to the connection pin at the other end in the advance / retreat direction, and forming the pair In a state where the chain members are meshed and integrated, the chain members mesh with each other at the meshing surfaces of the link plates and engage with each other at the engagement surfaces of the link plates to form a pair. The link plate of one of the chain members is a first link plate, the link plate of the other chain member is a second link plate, and the engagement surface of the first link plate is Is a first engagement surface, the engagement surface of the second link plate is a second engagement surface, and the first engagement surface has an engagement recess extending along the first engagement surface. Is provided, and the second engaging surface has an engaging convex portion which is fitted to the engaging concave portion when the first engaging surface and the second engaging surface are engaged with each other. Along the second engagement surface It is provided so as to extend.
　この構成によれば、チェーン部材同士が第１リンクプレートの第１係合面及び第２リンクプレートの第２係合面において係合した状態では、係合凸部と係合凹部とが嵌合する。このため、連結ピンの延びる方向における第１リンクプレートと第２リンクプレートとの位置ずれが抑制されるので、チェーン部材同士が噛み合って一体化された状態での座屈荷重を向上することができる。 According to this configuration, when the chain members are engaged with each other on the first engagement surface of the first link plate and the second engagement surface of the second link plate, the engagement convex portion and the engagement concave portion are fitted. I do. For this reason, the displacement between the first link plate and the second link plate in the direction in which the connecting pin extends is suppressed, so that the buckling load in a state where the chain members are meshed and integrated with each other can be improved. .
　上記課題を解決する噛合チェーンは、進退可能な少なくとも一対のチェーン部材を有し、対をなす前記チェーン部材同士が進行方向に移動することで相互に噛み合って一体化する一方、その一体化した噛合状態から前記チェーン部材同士が退行方向に移動することで相互に噛み外れて分岐する噛合チェーンであって、各チェーン部材は、進退方向に並ぶ一対のピン孔をそれぞれ有する複数のリンクプレートと、複数の連結ピンとを備えるとともに、前記複数のリンクプレートが前記ピン孔において前記連結ピンによって回動自在に直列に連結されて形成されており、各リンクプレートは、前記進退方向における一端部に前記連結ピンと直交する方向に延びる噛合面を有するとともに前記進退方向における他端部に前記連結ピンと直交する方向に延びる係合面を有し、対をなす前記チェーン部材同士が噛み合って一体化された状態では、前記チェーン部材同士が、それらの前記リンクプレートの前記噛合面において噛合するとともにそれらの前記リンクプレートの前記係合面において係合し、対をなす前記チェーン部材のうち、一方の前記チェーン部材の前記リンクプレートは第１リンクプレートであり、他方の前記チェーン部材の前記リンクプレートは第２リンクプレートであり、前記第１リンクプレートの前記噛合面は第１噛合面であり、前記第２リンクプレートの前記噛合面は第２噛合面であり、前記第１噛合面には、前記第１噛合面に沿って延びる噛合凸部が設けられており、前記第２噛合面には、前記第１噛合面と前記第２噛合面とが噛合した場合に前記噛合凸部と嵌合される噛合凹部が前記第２噛合面に沿って延びるように設けられている。 A meshing chain that solves the above-mentioned problem has at least a pair of chain members that can advance and retreat, and the paired chain members move in the traveling direction to mesh with each other to be integrated, while the integrated meshing is performed. An interlocking chain in which the chain members move in the retreating direction from each other to be disengaged from each other and branch off. A plurality of link plates, and the plurality of link plates are rotatably connected in series in the pin holes by the connection pins, and each link plate is provided at one end in the advance / retreat direction with the connection pins. One having a mating surface extending in the orthogonal direction and having the other end in the advance / retreat direction orthogonal to the connecting pin. In a state where the chain members forming a pair are meshed and integrated with each other, the chain members mesh with each other at the meshing surfaces of the link plates, and the link plates are formed. The link plate of one of the chain members is a first link plate, and the link plate of the other chain member is a second link plate. Wherein the engagement surface of the first link plate is a first engagement surface, the engagement surface of the second link plate is a second engagement surface, and the first engagement surface includes the first engagement surface. Is provided, and the second meshing surface is fitted with the meshing projection when the first meshing surface and the second meshing surface are meshed with each other. Coupling concave portion which is provided so as to extend along said second engagement surface.
　この構成によれば、チェーン部材同士が第１リンクプレートの第１噛合面及び第２リンクプレートの第２噛合面において噛合した状態では、噛合凸部と噛合凹部とが嵌合する。このため、連結ピンの延びる方向における第１リンクプレートと第２リンクプレートとの位置ずれが抑制されるので、チェーン部材同士が噛み合って一体化された状態での座屈荷重を向上することができる。 According to this configuration, when the chain members are meshed with each other at the first meshing surface of the first link plate and the second meshing surface of the second link plate, the meshing convex portion and the meshing concave portion are fitted. For this reason, the displacement between the first link plate and the second link plate in the direction in which the connecting pin extends is suppressed, so that the buckling load in a state where the chain members are meshed and integrated with each other can be improved. .
　上記噛合チェーンにおいて、前記係合面には、互いに前記係合面において係合した前記リンクプレート同士の前記係合面の延びる方向における位置ずれを抑制する凹凸面が設けられていることが好ましい。 In the above-mentioned meshing chain, it is preferable that the engaging surface is provided with an uneven surface that suppresses a displacement of the link plates engaged with each other on the engaging surface in a direction in which the engaging surface extends.
　この構成によれば、チェーン部材同士が噛み合って一体化された状態では、それぞれのリンクプレートの係合面に設けられた凹凸面同士が嵌合する。このため、係合面において係合したリンクプレート同士の係合面の延びる方向における位置ずれが抑制されるので、チェーン部材同士が噛み合って一体化された状態での座屈荷重をより一層向上することができる。 According to this configuration, in a state where the chain members are engaged with each other and integrated, the concave and convex surfaces provided on the engagement surfaces of the respective link plates are fitted. For this reason, the displacement of the engaged link plates in the engagement surface in the extending direction of the engagement surfaces is suppressed, so that the buckling load in a state where the chain members are engaged and integrated with each other is further improved. be able to.
　上記噛合チェーンにおいて、前記凹凸面は、曲面であることが好ましい。
　この構成によれば、チェーン部材同士が噛み合って一体化される際に、それぞれのリンクプレートの係合面に設けられた凹凸面同士を円滑に嵌合させることができる。 In the above-mentioned meshing chain, it is preferable that the uneven surface is a curved surface.
According to this configuration, when the chain members mesh with each other and are integrated, the uneven surfaces provided on the engagement surfaces of the respective link plates can be smoothly fitted together.
　上記課題を解決する可動体移動装置は、上記噛合チェーンと、前記噛合チェーンに連結されて前記噛合チェーンとともに前記噛合チェーンの進退方向へ移動可能な可動体とを備える。 可 動 A movable body moving device that solves the above problem includes the meshing chain, and a movable body that is connected to the meshing chain and that can move in the direction of movement of the meshing chain together with the meshing chain.
　この構成によれば、上記噛合チェーンと同様の作用効果を得ることができる。 According to this configuration, it is possible to obtain the same operation and effect as those of the above-mentioned meshing chain.
　本開示によれば、チェーン部材同士が噛み合って一体化された状態での座屈荷重を向上することができる。 According to the present disclosure, it is possible to improve the buckling load in a state where the chain members are engaged with each other and integrated.
一実施形態の可動体移動装置において、噛合チェーンが進行方向へ移動したときの状態を示す正面図。FIG. 4 is a front view showing a state where the meshing chain has moved in the traveling direction in the movable body moving device of the embodiment. 可動体移動装置において、噛合チェーンが退行方向へ移動したときの状態を示す正面図。FIG. 6 is a front view showing a state where the meshing chain has moved in a retreating direction in the movable body moving device. 可動体移動装置を構成する噛合チェーンの一部を示す斜視図。FIG. 4 is a perspective view showing a part of a meshing chain which constitutes the movable body moving device. 第１リンクプレートの斜視図。The perspective view of a 1st link plate. 第２リンクプレートの斜視図。The perspective view of a 2nd link plate. 第１リンクプレートの第１係合面と第２リンクプレートの第２係合面とが係合したときの状態を示す斜視図。FIG. 4 is a perspective view showing a state where a first engagement surface of a first link plate and a second engagement surface of a second link plate are engaged. 第１リンクプレートの第１噛合面と第２リンクプレートの第２噛合面とが噛合したときの状態を示す斜視図。FIG. 4 is a perspective view showing a state where a first meshing surface of a first link plate and a second meshing surface of a second link plate are meshed. 変更例の第１リンクプレートを示す斜視図。The perspective view showing the 1st link plate of a modification. 変更例の第２リンクプレートを示す斜視図。The perspective view showing the 2nd link plate of a modification. 別の変更例の第１リンクプレートを示す斜視図。The perspective view which shows the 1st link plate of another modification. 別の変更例の第２リンクプレートを示す斜視図。The perspective view which shows the 2nd link plate of another modification.
　以下、可動体移動装置の一実施形態を図面に従って説明する。
　図１に示すように、可動体移動装置１１は、噛合チェーン１２と、固定状態で配置された収容部１３と、噛合チェーン１２の先端部にジョイントリンク１４を介して連結された可動体１５とを備えている。噛合チェーン１２は、互いに噛合可能な一対のチェーン部材１２Ａ，１２Ｂを有するとともに、その長手方向に沿って進退可能である。 Hereinafter, an embodiment of a movable body moving device will be described with reference to the drawings.
As shown in FIG. 1, the movable body moving device 11 includes a meshing chain 12, a housing 13 arranged in a fixed state, and a movable body 15 connected to a distal end portion of the meshing chain 12 via a joint link 14. It has. The meshing chain 12 has a pair of chain members 12A and 12B that can mesh with each other, and can move forward and backward along the longitudinal direction.
　以下の記載では、対をなすチェーン部材１２Ａ，１２Ｂ同士が相互に噛み合って一体化した噛合状態にある噛合チェーン１２を噛合状態の噛合チェーン１２と称する。また、可動体１５を移動させる際の噛合チェーン１２の進退方向を進退方向Ｚと称する。この場合、噛合チェーン１２の進行方向（図１では上方向）を進行方向Ｚ１と称し、噛合チェーン１２の退行方向（図１では下方向）を退行方向Ｚ２と称する。また、進退方向Ｚと直交する方向のうち、噛合状態の噛合チェーン１２が退行方向Ｚ２への移動に伴いチェーン部材１２Ａ，１２Ｂ同士が相互に噛み外れて分岐される方向を分岐方向Ｘ（図１では左右方向）と称する。さらに、進退方向Ｚ及び分岐方向Ｘの両方と直交する方向を前後方向Ｙ（図１では紙面と直交する方向）と称する。そして、図１及び図２では、収容部１３の外装の図示を省略して、収容部１３の内部構成を示している。 In the following description, the meshing chain 12 in which the paired chain members 12A and 12B mesh with each other and are in an integrated meshing state is referred to as a meshing meshing chain 12. Further, the moving direction of the meshing chain 12 when the movable body 15 is moved is referred to as a moving direction Z. In this case, the traveling direction of the meshing chain 12 (upward in FIG. 1) is referred to as the traveling direction Z1, and the retreating direction of the meshing chain 12 (downward in FIG. 1) is referred to as the retreating direction Z2. In the direction orthogonal to the advance / retreat direction Z, the direction in which the mesh members 12A, 12B are disengaged from each other and branched when the meshing mesh 12 is moved in the retreat direction Z2 is referred to as a branch direction X (FIG. 1). In the left and right directions). Further, a direction orthogonal to both the forward / backward direction Z and the branching direction X is referred to as a front-rear direction Y (a direction orthogonal to the paper surface in FIG. 1). 1 and 2, the exterior of the housing 13 is not shown, and the internal configuration of the housing 13 is shown.
　図１に示すように、収容部１３は、噛合チェーン１２を収容可能に構成されている。収容部１３内における分岐方向Ｘの中央部には、スプロケット１６がチェーン部材１２Ｂ（噛合チェーン１２）と噛み合うように設けられている。スプロケット１６は、前後方向Ｙに延びる軸線を中心に正逆両方向に回転可能であり、図示しないモーターによって正逆両方向に回転駆動される。そして、このスプロケット１６の回転駆動に伴って噛合チェーン１２は進退方向Ｚに沿って進退する。 収容 As shown in FIG. 1, the housing 13 is configured to be able to house the meshing chain 12. A sprocket 16 is provided at a central portion in the branching direction X in the housing portion 13 so as to mesh with the chain member 12B (the meshing chain 12). The sprocket 16 is rotatable in both forward and reverse directions about an axis extending in the front-rear direction Y, and is driven to rotate in both forward and reverse directions by a motor (not shown). Then, the meshing chain 12 advances and retreats in the advance and retreat direction Z as the sprocket 16 rotates.
　さらに、収容部１３は、前後方向Ｙにおいて外装（図示略）と略同一の矩形状をなす誘導板１７を備えている。誘導板１７の内側面には、一対の誘導溝１８が図１においてほぼ左右対称となるように設けられている。一対の誘導溝１８は、噛合状態から分岐した一対のチェーン部材１２Ａ，１２Ｂが渦巻きながら移動するように一対のチェーン部材１２Ａ，１２Ｂを誘導可能な渦巻状の部分を有している。 収容 Furthermore, the accommodating portion 13 is provided with a guide plate 17 which is substantially the same rectangular shape as the exterior (not shown) in the front-rear direction Y. A pair of guide grooves 18 are provided on the inner surface of the guide plate 17 so as to be substantially symmetrical in FIG. The pair of guide grooves 18 has a spiral portion that can guide the pair of chain members 12A and 12B so that the pair of chain members 12A and 12B branched from the meshed state move while spirally moving.
　また、収容部１３において、外装（図示略）の内側面には、誘導板１７の一対の誘導溝１８と対応するように一対の誘導溝１８が設けられている。したがって、収容部１３の前後方向Ｙにおける両内側面には、前後方向Ｙにそれぞれ対向する二対の誘導溝１８が設けられている。収容部１３における進行方向Ｚ１側の面における分岐方向Ｘのほぼ中央部には、噛合チェーン１２を通すための開口部１９が形成されている。 収容 Further, in the housing 13, a pair of guide grooves 18 are provided on the inner side surface of the exterior (not shown) so as to correspond to the pair of guide grooves 18 of the guide plate 17. Therefore, two pairs of guide grooves 18 facing each other in the front-rear direction Y are provided on both inner side surfaces in the front-rear direction Y of the housing portion 13. An opening 19 through which the meshing chain 12 passes is formed substantially at the center of the housing 13 in the branching direction X on the surface on the side of the traveling direction Z1.
　図２～図４に示すように、本実施形態において、噛合チェーン１２を構成するチェーン部材１２Ａには、一列のチェーン部材が採用されている。チェーン部材１２Ａは、複数のリンクプレートとしての複数の第１リンクプレート２２と、円柱状の複数の連結ピン２３とを有している。各第１リンクプレート２２は、進退方向Ｚに並ぶ一対の円形状のピン孔２１を有している。複数の第１リンクプレート２２は、ピン孔２１において連結ピン２３によって回動自在に直列に連結されている。 As shown in FIGS. 2 to 4, in the present embodiment, a chain of chain members is employed as the chain member 12A constituting the meshing chain 12. The chain member 12A has a plurality of first link plates 22 as a plurality of link plates, and a plurality of cylindrical connection pins 23. Each first link plate 22 has a pair of circular pin holes 21 arranged in the reciprocating direction Z. The plurality of first link plates 22 are rotatably connected in series in the pin holes 21 by connecting pins 23.
　詳しくは、チェーン部材１２Ａを構成する複数の第１リンクプレート２２は、２つずつ前後方向Ｙで対向配置されてそれぞれ対をなすように配置されている。複数対の第１リンクプレート２２は、比較的間隔の狭い対をなす第１リンクプレート２２と、比較的間隔の広い対をなす第１リンクプレート２２とを含んでいる。 Specifically, the plurality of first link plates 22 constituting the chain member 12A are arranged so as to be opposed to each other in the front-rear direction Y two by two, and to be paired with each other. The plurality of pairs of first link plates 22 include a first link plate 22 forming a pair with a relatively small interval and a first link plate 22 forming a pair with a relatively large interval.
　そして、比較的間隔の狭い一対の第１リンクプレート２２と、比較的間隔の広い一対の第１リンクプレート２２とは、それぞれの片方のピン孔２１同士が前後方向Ｙで重なるように長手方向に交互に複数配置されている。この状態で、前後方向Ｙで重なり合ったピン孔２１同士にそれぞれ連結ピン２３を嵌合させることによってチェーン部材１２Ａは組み立てられる。 The pair of first link plates 22 having a relatively small interval and the pair of first link plates 22 having a relatively large interval are formed in the longitudinal direction such that the respective pin holes 21 overlap in the front-rear direction Y. A plurality of them are alternately arranged. In this state, the chain member 12A is assembled by fitting the connection pins 23 into the pin holes 21 overlapping in the front-rear direction Y.
　この場合、比較的間隔の広い対をなす第１リンクプレート２２、すなわち前後方向Ｙにおける外側に位置する対をなす第１リンクプレート２２のピン孔２１には、連結ピン２３が回転不能に嵌合されている。一方、比較的間隔の狭い対をなす第１リンクプレート２２、すなわち前後方向Ｙにおける内側に位置する対をなす第１リンクプレート２２のピン孔２１には、連結ピン２３が回転可能に嵌合されている。 In this case, the connection pin 23 is non-rotatably fitted into the pair of first link plates 22 having a relatively wide interval, that is, the pin holes 21 of the pair located outside on the outer side in the front-rear direction Y. Have been. On the other hand, the connecting pin 23 is rotatably fitted in the first link plate 22 forming a pair having a relatively narrow interval, that is, in the pin hole 21 of the first link plate 22 forming the pair located inside in the front-rear direction Y. ing.
　連結ピン２３の両端部は、前後方向Ｙにおいて外側に位置する対をなす第１リンクプレート２２よりも外側に突出している。そして、チェーン部材１２Ａが収容部１３内に収容される際には、それらの連結ピン２３の両端部が収容部１３内にて前後方向Ｙでそれぞれ対向する二対の誘導溝１８のうちの一方の対の誘導溝１８に摺動可能に挿入される。すなわち、チェーン部材１２Ａが収容部１３内に収容される際には、各連結ピン２３の一端部が収容部１３の誘導板１７に設けられた誘導溝１８に挿入され、各連結ピン２３の他端部が収容部１３の外装（図示略）の内側面に設けられた誘導溝１８に挿入される。 両 端 Both end portions of the connection pin 23 project outside the pair of first link plates 22 located outside in the front-rear direction Y. When the chain member 12 </ b> A is housed in the housing portion 13, one of the two pairs of guide grooves 18 in which both ends of the connection pins 23 face each other in the housing portion 13 in the front-rear direction Y. Are slidably inserted into the pair of guide grooves 18. That is, when the chain member 12 </ b> A is housed in the housing portion 13, one end of each connection pin 23 is inserted into the guide groove 18 provided in the guide plate 17 of the housing portion 13, The end is inserted into the guide groove 18 provided on the inner surface of the exterior (not shown) of the housing 13.
　第１リンクプレート２２は、進行方向Ｚ１側の端部に、略Ｕ字状に切り欠かれてなる切欠凹部２４を有している。切欠凹部２４の底面は、第１リンクプレート２２の輪郭を形成する端面の一部を構成し、噛合面としての第１噛合面２５を構成している。すなわち、第１リンクプレート２２は、進退方向Ｚにおける一端部に第１噛合面２５を有している。第１噛合面２５における前後方向Ｙ（第１リンクプレート２２の厚さ方向）の中央部には、第１噛合面２５の長手方向に沿って延びる噛合凸部２６が形成されている。 The first link plate 22 has a cutout recess 24 formed in a substantially U-shape at the end in the traveling direction Z1 side. The bottom surface of the cutout recess 24 forms a part of an end surface forming the contour of the first link plate 22 and forms a first engagement surface 25 as an engagement surface. That is, the first link plate 22 has the first meshing surface 25 at one end in the advance / retreat direction Z. At the center of the first meshing surface 25 in the front-rear direction Y (the thickness direction of the first link plate 22), a meshing projection 26 extending along the longitudinal direction of the first meshing surface 25 is formed.
　第１リンクプレート２２は、退行方向Ｚ２側の端部に、進退方向Ｚに対して斜めに交差するように延びる係合面としての第１係合面２７を有している。すなわち、第１リンクプレート２２は、進退方向Ｚにおける他端部に第１係合面２７を有している。第１係合面２７は、連結ピン２３の延びる方向と一致する前後方向Ｙと直交する方向に延びている。第１係合面２７は、第１リンクプレート２２の輪郭を形成する端面の一部を構成し、且つ凹凸面としての波形の曲面によって構成されている。第１係合面２７における前後方向Ｙ（第１リンクプレート２２の厚さ方向）の中央部には、第１係合面２７の長手方向に沿って延びる係合凹部２８が形成されている。係合凹部２８の底面は、第１係合面２７に合わせた波形の曲面によって構成されている。 The first link plate 22 has a first engagement surface 27 at an end on the retreating direction Z2 side as an engaging surface extending so as to obliquely intersect the reciprocating direction Z. That is, the first link plate 22 has the first engagement surface 27 at the other end in the advance / retreat direction Z. The first engagement surface 27 extends in a direction orthogonal to the front-rear direction Y that matches the direction in which the connecting pin 23 extends. The first engagement surface 27 forms a part of an end surface forming the contour of the first link plate 22, and is formed by a corrugated curved surface as an uneven surface. At the center of the first engagement surface 27 in the front-rear direction Y (the thickness direction of the first link plate 22), an engagement recess 28 extending along the longitudinal direction of the first engagement surface 27 is formed. The bottom surface of the engagement recess 28 is formed by a curved surface having a waveform corresponding to the first engagement surface 27.
　図２、図３、及び図５に示すように、本実施形態において、噛合チェーン１２を構成するチェーン部材１２Ｂには、チェーン部材１２Ａと同様に一列のチェーン部材が採用されている。チェーン部材１２Ｂは、複数のリンクプレートとしての複数の第２リンクプレート３０と、円柱状の複数の連結ピン２３とを有している。各第２リンクプレート３０は、進退方向Ｚに並ぶ一対の円形状のピン孔２９を有している。複数の第２リンクプレート３０は、ピン孔２９において連結ピン２３によって回動自在に直列に連結されている。 As shown in FIGS. 2, 3, and 5, in the present embodiment, a chain member in a row is employed as the chain member 12B constituting the meshing chain 12, similarly to the chain member 12A. The chain member 12B has a plurality of second link plates 30 as a plurality of link plates, and a plurality of cylindrical connection pins 23. Each second link plate 30 has a pair of circular pin holes 29 arranged in the reciprocating direction Z. The plurality of second link plates 30 are rotatably connected in series in the pin holes 29 by the connecting pins 23.
　詳しくは、チェーン部材１２Ｂを構成する複数の第２リンクプレート３０は、２つずつ前後方向Ｙで対向配置されてそれぞれ対をなすように配置されている。複数対の第２リンクプレート３０は、比較的間隔の狭い対をなす第２リンクプレート３０と、比較的間隔の広い対をなす第２リンクプレート３０とを含んでいる。 Specifically, the plurality of second link plates 30 configuring the chain member 12B are arranged so as to be opposed to each other in the front-rear direction Y by two, and to be paired with each other. The plurality of pairs of second link plates 30 include a second link plate 30 forming a pair with a relatively small interval and a second link plate 30 forming a pair with a relatively large interval.
　そして、比較的間隔の狭い一対の第２リンクプレート３０と、比較的間隔の広い一対の第２リンクプレート３０とは、それぞれの片方のピン孔２９同士が前後方向Ｙで重なるように長手方向に交互に複数配置されている。この状態で、前後方向Ｙで重なり合ったピン孔２９同士にそれぞれ連結ピン２３を嵌合させることによってチェーン部材１２Ｂは組み立てられる。 The pair of second link plates 30 having a relatively small interval and the pair of second link plates 30 having a relatively large interval are arranged in the longitudinal direction such that the respective pin holes 29 overlap in the front-rear direction Y. A plurality of them are alternately arranged. In this state, the chain member 12B is assembled by fitting the connection pins 23 into the pin holes 29 overlapping in the front-rear direction Y.
　この場合、比較的間隔の広い対をなす第２リンクプレート３０、すなわち前後方向Ｙにおける外側に位置する対をなす第２リンクプレート３０のピン孔２９には、連結ピン２３が回転不能に嵌合されている。一方、比較的間隔の狭い対をなす第２リンクプレート３０、すなわち前後方向Ｙにおける内側に位置する対をなす第２リンクプレート３０のピン孔２９には、連結ピン２３が回転可能に嵌合されている。 In this case, the connection pin 23 is non-rotatably fitted into the second link plate 30 forming a pair having a relatively wide interval, that is, the pin hole 29 of the second link plate 30 forming a pair located outside in the front-rear direction Y. Have been. On the other hand, the connecting pin 23 is rotatably fitted into the second link plate 30 forming a pair having a relatively small interval, that is, the pin hole 29 of the second link plate 30 forming the pair located inside in the front-rear direction Y. ing.
　連結ピン２３の両端部は、前後方向Ｙにおいて外側に位置する対をなす第２リンクプレート３０よりも外側に突出している。そして、チェーン部材１２Ｂが収容部１３内に収容される際には、それらの連結ピン２３の両端部が収容部１３内にて前後方向Ｙでそれぞれ対向する二対の誘導溝１８のうちの他方の対の誘導溝１８に摺動可能に挿入される。すなわち、チェーン部材１２Ｂが収容部１３内に収容される際には、各連結ピン２３の一端部が収容部１３の誘導板１７に設けられた誘導溝１８に挿入され、各連結ピン２３の他端部が収容部１３の外装（図示略）の内側面に設けられた誘導溝１８に挿入される。 両 端 Both end portions of the connection pin 23 project outside the pair of second link plates 30 located outside in the front-rear direction Y. When the chain member 12 </ b> B is housed in the housing portion 13, both ends of the connecting pins 23 are the other of the two pairs of guide grooves 18 facing each other in the front-rear direction Y in the housing portion 13. Are slidably inserted into the pair of guide grooves 18. That is, when the chain member 12 </ b> B is housed in the housing portion 13, one end of each connection pin 23 is inserted into the guide groove 18 provided in the guide plate 17 of the housing portion 13, The end is inserted into the guide groove 18 provided on the inner surface of the exterior (not shown) of the housing 13.
　第２リンクプレート３０は、退行方向Ｚ２側の端部に、略Ｕ字状に切り欠かれてなる切欠凹部３１を有している。切欠凹部３１の底面は、第２リンクプレート３０の輪郭を形成する端面の一部を構成し、噛合面としての第２噛合面３２を構成している。すなわち、第２リンクプレート３０は、進退方向Ｚにおける一端部に第２噛合面３２を有している。第２噛合面３２における前後方向Ｙ（第２リンクプレート３０の厚さ方向）の中央部には、第２噛合面３２の長手方向に沿って延びる噛合凹部３３が形成されている。噛合凹部３３は、第２リンクプレート３０の第２噛合面３２と第１リンクプレート２２の第１噛合面２５とが噛合した場合に、噛合凸部２６と嵌合する。 The second link plate 30 has a cutout recessed portion 31 cut out in a substantially U-shape at the end in the retreating direction Z2. The bottom surface of the cutout recess 31 forms a part of an end face forming the contour of the second link plate 30 and forms a second meshing surface 32 as a meshing surface. That is, the second link plate 30 has the second engagement surface 32 at one end in the advance / retreat direction Z. At the center of the second meshing surface 32 in the front-rear direction Y (the thickness direction of the second link plate 30), a meshing recess 33 extending along the longitudinal direction of the second meshing surface 32 is formed. The meshing concave portion 33 is fitted with the meshing convex portion 26 when the second meshing surface 32 of the second link plate 30 meshes with the first meshing surface 25 of the first link plate 22.
　第２リンクプレート３０は、進行方向Ｚ１側の端部に、進退方向Ｚに対して斜めに交差するように延びる係合面としての第２係合面３４を有している。すなわち、第２リンクプレート３０は、進退方向Ｚにおける他端部に第２係合面３４を有している。第２係合面３４は、連結ピン２３の延びる方向と一致する前後方向Ｙと直交する方向に延びている。第２係合面３４は、第２リンクプレート３０の輪郭を形成する端面の一部を構成し、且つ凹凸面としての波形の曲面によって構成されている。 The second link plate 30 has a second engagement surface 34 at an end on the side of the traveling direction Z1 as an engagement surface extending so as to obliquely intersect the advancing / retreating direction Z. That is, the second link plate 30 has the second engagement surface 34 at the other end in the advance / retreat direction Z. The second engagement surface 34 extends in a direction orthogonal to the front-rear direction Y that matches the direction in which the connecting pin 23 extends. The second engagement surface 34 constitutes a part of an end surface forming the contour of the second link plate 30, and is constituted by a corrugated curved surface as an uneven surface.
　第２係合面３４における前後方向Ｙ（第２リンクプレート３０の厚さ方向）の中央部には、第２係合面３４の長手方向に沿って延びる係合凸部３５が形成されている。係合凸部３５は、第２リンクプレート３０の第２係合面３４と第１リンクプレート２２の第１係合面２７とが係合した場合に、係合凹部２８と嵌合する。係合凸部３５の先端面は、第２係合面３４に合わせた波形の曲面によって構成されている。 An engagement protrusion 35 extending along the longitudinal direction of the second engagement surface 34 is formed at the center of the second engagement surface 34 in the front-rear direction Y (the thickness direction of the second link plate 30). . The engagement projection 35 is fitted to the engagement recess 28 when the second engagement surface 34 of the second link plate 30 and the first engagement surface 27 of the first link plate 22 are engaged. The distal end surface of the engagement projection 35 is formed by a curved surface having a waveform corresponding to the second engagement surface 34.
　そして、図１に示すように、噛合チェーン１２は、一対のチェーン部材１２Ａ，１２Ｂの進行方向Ｚ１への移動に伴って一対のチェーン部材１２Ａ，１２Ｂ間で対応する複数の第１リンクプレート２２及び複数の第２リンクプレート３０が相互に噛み合うことで直棒状に一体化した剛体構造の噛合状態となる。 As shown in FIG. 1, the meshing chain 12 includes a plurality of first link plates 22 corresponding to the pair of chain members 12A and 12B as the pair of chain members 12A and 12B move in the traveling direction Z1. When the plurality of second link plates 30 mesh with each other, a meshing state of a rigid structure integrated into a straight rod shape is obtained.
　一対のチェーン部材１２Ａ，１２Ｂ同士が噛み合って一体化された状態では、一対のチェーン部材１２Ａ，１２Ｂ同士は、第１リンクプレート２２の第１噛合面２５及び第２リンクプレート３０の第２噛合面３２において噛合する。さらに、一対のチェーン部材１２Ａ，１２Ｂ同士は、第１リンクプレート２２の第１係合面２７及び第２リンクプレート３０の第２係合面３４において係合する。 In a state where the pair of chain members 12A and 12B are engaged with each other and integrated, the pair of chain members 12A and 12B are connected to each other by the first engagement surface 25 of the first link plate 22 and the second engagement surface of the second link plate 30. At 32 it engages. Further, the pair of chain members 12A and 12B are engaged with each other at the first engagement surface 27 of the first link plate 22 and the second engagement surface 34 of the second link plate 30.
　この場合、第１リンクプレート２２の第１係合面２７及び第２リンクプレート３０の第２係合面３４は、互いに嵌合可能な凹凸面である波形の曲面によって構成されている。このため、第１リンクプレート２２の第１係合面２７と第２リンクプレート３０の第２係合面３４とが係合した場合には、第１係合面２７と第２係合面３４とが凹凸嵌合することで、第１係合面２７及び第２係合面３４の延びる方向における第１リンクプレート２２と第２リンクプレート３０との位置ずれが抑制される。 In this case, the first engagement surface 27 of the first link plate 22 and the second engagement surface 34 of the second link plate 30 are formed by corrugated curved surfaces that can be fitted to each other. Therefore, when the first engagement surface 27 of the first link plate 22 and the second engagement surface 34 of the second link plate 30 are engaged, the first engagement surface 27 and the second engagement surface 34 Are unevenly fitted to each other, whereby the displacement of the first link plate 22 and the second link plate 30 in the direction in which the first engagement surface 27 and the second engagement surface 34 extend is suppressed.
　一方、図２に示すように、一対のチェーン部材１２Ａ，１２Ｂ同士が噛合した噛合状態の噛合チェーン１２は、退行方向Ｚ２への移動に伴って一対のチェーン部材１２Ａ，１２Ｂ同士が相互に噛み外れることで分岐方向Ｘに分岐される。その結果、噛合チェーン１２（チェーン部材１２Ａ，１２Ｂ）の大部分が収容部１３内に収容される。 On the other hand, as shown in FIG. 2, in the meshing chain 12 in which the pair of chain members 12A and 12B are meshed with each other, the pair of chain members 12A and 12B are disengaged from each other with the movement in the retreating direction Z2. Accordingly, the light is branched in the branch direction X. As a result, most of the engagement chain 12 ( chain members 12A and 12B) is accommodated in the accommodation portion 13.
　なお、一対のチェーン部材１２Ａ，１２Ｂにおいて、互いに噛合する前後方向Ｙの外側に位置する第１リンクプレート２２及び第２リンクプレート３０と、互いに噛合する前後方向Ｙの内側に位置する第１リンクプレート２２及び第２リンクプレート３０とは、進退方向Ｚに並ぶ連結ピン２３の１ピッチ分だけ、進退方向Ｚにおける位置がずれている。 In addition, in the pair of chain members 12A and 12B, the first link plate 22 and the second link plate 30 located outside in the front-rear direction Y meshing with each other, and the first link plate located inside in the front-rear direction Y meshing with each other. 22 and the second link plate 30 are displaced in the reciprocating direction Z by one pitch of the connecting pins 23 arranged in the reciprocating direction Z.
　また、図１及び図２に示すように、噛合チェーン１２は、長手方向における進行方向Ｚ１側の端部が可動体１５に連結されている。可動体１５には、各種の機能部材（例えば、昇降テーブルやクレーンなど）が取り付けられる。そして、噛合チェーン１２の進退に伴って可動体１５が進退方向Ｚへ移動すると、可動体１５に取り付けられた機能部材も可動体１５と一緒に進退方向Ｚへ移動する。 As shown in FIGS. 1 and 2, the end of the engagement chain 12 on the side of the longitudinal direction Z <b> 1 in the longitudinal direction is connected to the movable body 15. Various functional members (for example, a lifting table and a crane) are attached to the movable body 15. Then, when the movable body 15 moves in the advance / retreat direction Z with the advance / retreat of the meshing chain 12, the functional member attached to the movable body 15 also moves in the advance / retreat direction Z together with the movable body 15.
　次に、可動体移動装置１１において、一対のチェーン部材１２Ａ，１２Ｂの進行方向Ｚ１への移動に伴ってこれらが相互に噛み合って一体化することで、噛合チェーン１２が直棒状の噛合状態になるときの作用を説明する。 Next, in the movable body moving device 11, as the pair of chain members 12A and 12B move in the traveling direction Z1, they mesh with each other to be integrated, so that the meshing chain 12 is in a straight rod-like meshing state. The operation at the time will be described.
　一対のチェーン部材１２Ａ，１２Ｂを噛合させて噛合チェーン１２を噛合状態とする場合には、まず、スプロケット１６を図２において時計方向に回転駆動させる。すると、一対のチェーン部材１２Ａ，１２Ｂは、誘導溝１８により連結ピン２３においてそれぞれガイドされながら進行方向Ｚ１へ移動する。 When the pair of chain members 12A and 12B are engaged with each other to bring the engagement chain 12 into the engagement state, first, the sprocket 16 is driven to rotate clockwise in FIG. Then, the pair of chain members 12A and 12B move in the traveling direction Z1 while being guided by the guide pins 18 by the connection pins 23, respectively.
　これにより、一対のチェーン部材１２Ａ，１２Ｂにおいて互いに対応する第１リンクプレート２２の第１噛合面２５と第２リンクプレート３０の第２噛合面３２とが順次に噛合するとともに第１リンクプレート２２の第１係合面２７と第２リンクプレート３０の第２係合面３４とが順次に係合し、図１に示すように、噛合チェーン１２が噛合状態となる。 As a result, the first meshing surface 25 of the first link plate 22 and the second meshing surface 32 of the second link plate 30 corresponding to each other in the pair of chain members 12A and 12B sequentially mesh with each other. The first engagement surface 27 and the second engagement surface 34 of the second link plate 30 are sequentially engaged, and the meshing chain 12 is in the meshing state as shown in FIG.
　このとき、図６に示すように、第１リンクプレート２２の第１係合面２７及び第２リンクプレート３０の第２係合面３４は、互いに嵌合可能な凹凸面である波形の曲面によって構成されている。このため、第１係合面２７と第２係合面３４とが係合した場合には、第１係合面２７と第２係合面３４とが凹凸嵌合することで、第１係合面２７及び第２係合面３４の延びる方向における第１リンクプレート２２と第２リンクプレート３０との位置ずれが抑制される。 At this time, as shown in FIG. 6, the first engagement surface 27 of the first link plate 22 and the second engagement surface 34 of the second link plate 30 are formed by a corrugated curved surface which is a concave and convex surface that can be fitted to each other. It is configured. Therefore, when the first engagement surface 27 and the second engagement surface 34 are engaged, the first engagement surface 27 and the second engagement surface 34 are fitted into the first engagement surface. The displacement between the first link plate 22 and the second link plate 30 in the direction in which the mating surface 27 and the second engagement surface 34 extend is suppressed.
　また、図６に示すように、第１係合面２７と第２係合面３４とが係合した場合には、第１係合面２７に形成された係合凹部２８と第２係合面３４に形成された係合凸部３５とが嵌合（すきま嵌め）する。加えて、図６及び図７に示すように、第１リンクプレート２２の第１噛合面２５と第２リンクプレート３０の第２噛合面３２とが噛合した場合には、第２噛合面３２に形成された噛合凹部３３と第１噛合面２５に形成された噛合凸部２６とが嵌合（すきま嵌め）する。したがって、これら係合凹部２８と係合凸部３５との嵌合と、噛合凹部３３と噛合凸部２６との嵌合とにより、前後方向Ｙ（連結ピン２３の延びる方向）における第１リンクプレート２２と第２リンクプレート３０との位置ずれが効果的に抑制される。 As shown in FIG. 6, when the first engagement surface 27 and the second engagement surface 34 are engaged, the engagement recess 28 formed on the first engagement surface 27 and the second engagement surface The engagement protrusion 35 formed on the surface 34 fits (clearance fit). In addition, as shown in FIGS. 6 and 7, when the first meshing surface 25 of the first link plate 22 and the second meshing surface 32 of the second link plate 30 mesh with each other, the second meshing surface 32 The formed engaging concave portion 33 and the engaging convex portion 26 formed on the first engaging surface 25 are fitted (gap fit). Therefore, the first link plate in the front-rear direction Y (the direction in which the connecting pin 23 extends) is formed by the engagement between the engagement concave portion 28 and the engagement convex portion 35 and the engagement between the engagement concave portion 33 and the engagement convex portion 26. The displacement between the second link plate 30 and the second link plate 30 is effectively suppressed.
　よって、第１係合面２７と第２係合面３４との嵌合と、係合凹部２８と係合凸部３５との嵌合と、噛合凹部３３と噛合凸部２６との嵌合とにより、噛合チェーン１２の座屈荷重が向上するため、噛合チェーン１２が直棒状の噛合状態となったときに噛合チェーン１２に対して進退方向Ｚの圧縮荷重が作用しても、噛合チェーン１２が座屈し難くなる。 Therefore, the engagement between the first engagement surface 27 and the second engagement surface 34, the engagement between the engagement concave portion 28 and the engagement convex portion 35, and the engagement between the engagement concave portion 33 and the engagement convex portion 26 As a result, the buckling load of the meshing chain 12 is improved, so that even if a compressive load in the reciprocating direction Z acts on the meshing chain 12 when the meshing chain 12 is in the straight rod-like meshing state, the meshing chain 12 is It becomes difficult to buckle.
　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）噛合チェーン１２において、チェーン部材１２Ａの第１リンクプレート２２の第１係合面２７には第１係合面２７に沿って延びる係合凹部２８が設けられている。チェーン部材１２Ｂの第２リンクプレート３０の第２係合面３４には第１係合面２７と第２係合面３４とが係合した場合に係合凹部２８と嵌合される係合凸部３５が第２係合面３４に沿って延びるように設けられている。この構成によれば、チェーン部材１２Ａ，１２Ｂ同士が第１リンクプレート２２の第１係合面２７及び第２リンクプレート３０の第２係合面３４において係合した状態では、係合凸部３５と係合凹部２８とが嵌合する。このため、連結ピン２３の延びる方向と一致する前後方向Ｙにおける第１リンクプレート２２と第２リンクプレート３０との位置ずれを抑制できるので、チェーン部材１２Ａ，１２Ｂ同士が噛み合って一体化された状態での座屈荷重を向上することができる。 According to the embodiment described in detail above, the following effects are exhibited.
(1) In the meshing chain 12, an engagement recess 28 extending along the first engagement surface 27 is provided on the first engagement surface 27 of the first link plate 22 of the chain member 12A. An engagement projection fitted to the engagement recess 28 when the first engagement surface 27 and the second engagement surface 34 are engaged with the second engagement surface 34 of the second link plate 30 of the chain member 12B. A portion 35 is provided so as to extend along the second engagement surface 34. According to this configuration, when the chain members 12A and 12B are engaged with each other on the first engagement surface 27 of the first link plate 22 and the second engagement surface 34 of the second link plate 30, the engagement protrusion 35 And the engaging recess 28 are fitted. For this reason, the position shift between the first link plate 22 and the second link plate 30 in the front-rear direction Y that matches the direction in which the connecting pin 23 extends can be suppressed, and the chain members 12A and 12B are meshed and integrated. Buckling load can be improved.
　（２）噛合チェーン１２において、チェーン部材１２Ａの第１リンクプレート２２の第１噛合面２５には第１噛合面２５に沿って延びる噛合凸部２６が設けられている。チェーン部材１２Ｂの第２リンクプレート３０の第２噛合面３２には第１噛合面２５と第２噛合面３２とが噛合した場合に噛合凸部２６と嵌合される噛合凹部３３が第２噛合面３２に沿って延びるように設けられている。この構成によれば、チェーン部材１２Ａ，１２Ｂ同士が第１リンクプレート２２の第１噛合面２５及び第２リンクプレート３０の第２噛合面３２において噛合した状態では、噛合凸部２６と噛合凹部３３とが嵌合する。このため、連結ピン２３の延びる方向と一致する前後方向Ｙにおける第１リンクプレート２２と第２リンクプレート３０との位置ずれを抑制できるので、チェーン部材１２Ａ，１２Ｂ同士が噛み合って一体化された状態での座屈荷重を向上することができる。 (2) In the meshing chain 12, the first meshing surface 25 of the first link plate 22 of the chain member 12A is provided with a meshing projection 26 extending along the first meshing surface 25. The second meshing surface 32 of the second link plate 30 of the chain member 12B has a second meshing concave portion 33 which is fitted with the meshing convex portion 26 when the first meshing surface 25 and the second meshing surface 32 mesh with each other. It is provided so as to extend along the surface 32. According to this configuration, when the chain members 12 </ b> A and 12 </ b> B mesh with each other on the first meshing surface 25 of the first link plate 22 and the second meshing surface 32 of the second link plate 30, the meshing projection 26 and the meshing recess 33 are formed. Are fitted. For this reason, the position shift between the first link plate 22 and the second link plate 30 in the front-rear direction Y that matches the direction in which the connecting pins 23 extend can be suppressed, and the chain members 12A and 12B are engaged with each other and integrated. Buckling load can be improved.
　（３）噛合チェーン１２において、チェーン部材１２Ａの第１リンクプレート２２の第１係合面２７及びチェーン部材１２Ｂの第２リンクプレート３０の第２係合面３４には、第１係合面２７と第２係合面３４とが係合したリンクプレート２２，３０同士の係合面２７，３４の延びる方向における位置ずれを抑制する凹凸面が設けられている。この構成によれば、チェーン部材１２Ａ，１２Ｂ同士が噛み合って一体化された状態では、リンクプレート２２，３０の係合面２７，３４に設けられた凹凸面同士が嵌合する。このため、係合面２７，３４において係合したリンクプレート２２，３０同士の係合面２７，３４の延びる方向における位置ずれを抑制できるので、チェーン部材１２Ａ，１２Ｂ同士が噛み合って一体化された状態での座屈荷重の向上に寄与できる。 (3) In the meshing chain 12, the first engagement surface 27 of the first link plate 22 of the chain member 12A and the second engagement surface 34 of the second link plate 30 of the chain member 12B are provided. An uneven surface is provided for suppressing displacement of the link plates 22, 30 in the direction in which the engaging surfaces 27, 34 in which the link plates 22, 30 engage with each other. According to this configuration, in a state where the chain members 12A and 12B are engaged with each other and integrated, the concave and convex surfaces provided on the engaging surfaces 27 and 34 of the link plates 22 and 30 are fitted. For this reason, since the displacement of the link plates 22 and 30 engaged on the engagement surfaces 27 and 34 in the direction in which the engagement surfaces 27 and 34 extend can be suppressed, the chain members 12A and 12B mesh and are integrated. It can contribute to the improvement of the buckling load in the state.
　（４）噛合チェーン１２において、係合面２７，３４に設けられた凹凸面は波形の曲面である。この構成によれば、チェーン部材１２Ａ，１２Ｂ同士が噛み合って一体化される際に、それぞれのリンクプレート２２，３０の係合面２７，３４に設けられた凹凸面同士を円滑に嵌合させることができる。 (4) In the meshing chain 12, the uneven surfaces provided on the engagement surfaces 27 and 34 are corrugated curved surfaces. According to this configuration, when the chain members 12A and 12B mesh with each other and are integrated, the uneven surfaces provided on the engagement surfaces 27 and 34 of the link plates 22 and 30 are smoothly fitted to each other. Can be.
　（変更例）
　なお、上記実施形態は次のように変更してもよい。
　・図８及び図９に示すように、第１リンクプレート２２の第１係合面２７及び第２リンクプレート３０の第２係合面３４を、波形の曲面でなく、平面によって構成してもよい。 (Example of change)
The above embodiment may be modified as follows.
As shown in FIGS. 8 and 9, the first engagement surface 27 of the first link plate 22 and the second engagement surface 34 of the second link plate 30 may be constituted by flat surfaces instead of curved surfaces. Good.
　・図１０及び図１１に示すように、第１リンクプレート２２の第１係合面２７の係合凹部２８の底面及び第２リンクプレート３０の第２係合面３４の係合凸部３５の先端面を、波形の曲面でなく平面によって構成してもよい。この場合、第１係合面２７における係合凹部２８を挟んだ両側の面のうちの一方と、第２係合面３４における係合凸部３５を挟んだ両側の面のうちの一方とを、互いに対応するように波形の曲面でなく平面によって構成してもよい。 As shown in FIGS. 10 and 11, the bottom surface of the engagement recess 28 of the first engagement surface 27 of the first link plate 22 and the engagement protrusion 35 of the second engagement surface 34 of the second link plate 30 The tip surface may be formed by a flat surface instead of a curved surface of a waveform. In this case, one of the two surfaces of the first engagement surface 27 on both sides of the engagement concave portion 28 and one of the two surfaces of the second engagement surface 34 on both sides of the engagement protrusion 35 are connected. Instead, the surfaces may be constituted by flat surfaces instead of curved surfaces so as to correspond to each other.
　・第１リンクプレート２２における噛合凸部２６及び第２リンクプレート３０における噛合凹部３３は省略してもよい。
　・第１リンクプレート２２における係合凹部２８及び第２リンクプレート３０における係合凸部３５は省略してもよい。 -The meshing convex portion 26 in the first link plate 22 and the meshing concave portion 33 in the second link plate 30 may be omitted.
The engagement recess 28 in the first link plate 22 and the engagement protrusion 35 in the second link plate 30 may be omitted.
　・第１リンクプレート２２の第１係合面２７及び第２リンクプレート３０の第２係合面３４に設けられる凹凸面は、必ずしも波形の曲面である必要はない。例えば、第１リンクプレート２２の第１係合面２７及び第２リンクプレート３０の第２係合面３４に設けられる凹凸面は、鋸歯状の面であってもよい。 The uneven surface provided on the first engagement surface 27 of the first link plate 22 and the second engagement surface 34 of the second link plate 30 does not necessarily have to be a wavy curved surface. For example, the uneven surface provided on the first engagement surface 27 of the first link plate 22 and the second engagement surface 34 of the second link plate 30 may be a sawtooth surface.
　・噛合チェーン１２は、連結ピン２３が挿通されるローラを備えていてもよい。
　・噛合チェーン１２を構成するチェーン部材１２Ａ，１２Ｂは二列以上のチェーン部材であってもよい。 The engagement chain 12 may include a roller through which the connection pin 23 is inserted.
-The chain members 12A and 12B constituting the meshing chain 12 may be two or more rows of chain members.
　・噛合チェーン１２は、二対以上のチェーン部材１２Ａ，１２Ｂによって構成してもよい。
　・複数対の第１リンクプレート２２を連結ピン２３及び連結ピン２３が挿通される円筒状のブシュを介して直列に回転可能に連結することによってチェーン部材１２Ａを形成し、複数対の第２リンクプレート３０を連結ピン２３及び連結ピン２３が挿通される円筒状のブシュを介して直列に回転可能に連結することによってチェーン部材１２Ｂを形成するようにしてもよい。すなわち、噛合チェーン１２は、所謂ブシュタイプのチェーンであってもよい。 -The meshing chain 12 may be constituted by two or more pairs of chain members 12A and 12B.
A chain member 12A is formed by connecting a plurality of pairs of first link plates 22 in series via a connection pin 23 and a cylindrical bush through which the connection pin 23 is inserted, thereby forming a chain member 12A, and a plurality of pairs of second links. The chain member 12B may be formed by connecting the plates 30 in series via a connecting pin 23 and a cylindrical bush through which the connecting pin 23 is inserted so as to be rotatable in series. That is, the engagement chain 12 may be a so-called bush type chain.
　・可動体移動装置１１は何れの向きに配置してもよい。例えば、進退方向Ｚが水平方向と一致するように可動体移動装置１１を配置してもよいし、進退方向Ｚが水平方向と交差するように可動体移動装置１１を配置してもよい。 The movable body moving device 11 may be arranged in any direction. For example, the movable body moving device 11 may be arranged so that the moving direction Z coincides with the horizontal direction, or the moving body moving device 11 may be arranged so that the moving direction Z intersects the horizontal direction.
　１１…可動体移動装置、１２…噛合チェーン、１２Ａ，１２Ｂ…チェーン部材、１５…可動体、２２…リンクプレートとしての第１リンクプレート、３０…リンクプレートとしての第２リンクプレート、２１，２９…ピン孔、２３…連結ピン、２５…噛合面としての第１噛合面、２６…噛合凸部、２７…係合面としての第１係合面、２８…係合凹部、３２…噛合面としての第２噛合面、３３…噛合凹部、３４…係合面としての第２係合面、３５…係合凸部、４０…リンクプレート、Ｚ…進退方向、Ｚ１…進行方向、Ｚ２…退行方向。 Reference numeral 11: movable body moving device, 12: meshing chain, 12A, 12B: chain member, 15: movable body, 22: first link plate as link plate, 30: second link plate as link plate, 21, 29 ... Pin holes, 23 connecting pins, 25 first engaging surfaces as engaging surfaces, 26 engaging convex portions, 27 first engaging surfaces as engaging surfaces, 28 engaging concave portions, 32 as engaging surfaces Second engaging surface, 33: engaging concave portion, 34: second engaging surface as an engaging surface, 35: engaging convex portion, 40: link plate, Z: forward / backward direction, Z1: forward direction, Z2: backward direction.

Claims (5)

  1. 　進退可能な少なくとも一対のチェーン部材を有し、対をなす前記チェーン部材同士が進行方向に移動することで相互に噛み合って一体化する一方、その一体化した噛合状態から前記チェーン部材同士が退行方向に移動することで相互に噛み外れて分岐する噛合チェーンであって、
    　各チェーン部材は、進退方向に並ぶ一対のピン孔をそれぞれ有する複数のリンクプレートと、複数の連結ピンとを備えるとともに、前記複数のリンクプレートが前記ピン孔において前記連結ピンによって回動自在に直列に連結されて形成されており、
    　各リンクプレートは、前記進退方向における一端部に噛合面を有するとともに前記進退方向における他端部に前記連結ピンと直交する方向に延びる係合面を有し、
    　対をなす前記チェーン部材同士が噛み合って一体化された状態では、前記チェーン部材同士が、それらの前記リンクプレートの前記噛合面において噛合するとともにそれらの前記リンクプレートの前記係合面において係合し、
    　対をなす前記チェーン部材のうち、一方の前記チェーン部材の前記リンクプレートは第１リンクプレートであり、他方の前記チェーン部材の前記リンクプレートは第２リンクプレートであり、
    　前記第１リンクプレートの前記係合面は第１係合面であり、
    　前記第２リンクプレートの前記係合面は第２係合面であり、
    　前記第１係合面には、前記第１係合面に沿って延びる係合凹部が設けられており、
    　前記第２係合面には、前記第１係合面と前記第２係合面とが係合した場合に前記係合凹部と嵌合される係合凸部が前記第２係合面に沿って延びるように設けられていることを特徴とする噛合チェーン。     It has at least a pair of chain members that can advance and retreat, and while the paired chain members move in the traveling direction, they mesh with each other to be integrated, and from the integrated meshing state, the chain members move in the retreating direction. A meshing chain that is disengaged and branched by being moved to
    Each chain member includes a plurality of link plates each having a pair of pin holes aligned in the forward and backward directions, and a plurality of connection pins, and the plurality of link plates are serially rotatably connected to the pin holes by the connection pins in the pin holes. It is formed by being connected,
    Each link plate has an engagement surface at one end in the advance / retreat direction and an engagement surface at the other end in the advance / retreat direction extending in a direction orthogonal to the connection pin,
    In a state where the paired chain members are engaged with each other and integrated, the chain members are engaged with each other at the engagement surfaces of the link plates and are engaged at the engagement surfaces of the link plates. ,
    Among the paired chain members, the link plate of one of the chain members is a first link plate, and the link plate of the other chain member is a second link plate,
    The engagement surface of the first link plate is a first engagement surface;
    The engagement surface of the second link plate is a second engagement surface;
    The first engagement surface has an engagement recess extending along the first engagement surface,
    The second engagement surface has an engagement protrusion fitted to the engagement recess when the first engagement surface and the second engagement surface are engaged with each other. A mesh chain provided so as to extend along.
  2. 　進退可能な少なくとも一対のチェーン部材を有し、対をなす前記チェーン部材同士が進行方向に移動することで相互に噛み合って一体化する一方、その一体化した噛合状態から前記チェーン部材同士が退行方向に移動することで相互に噛み外れて分岐する噛合チェーンであって、
    　各チェーン部材は、進退方向に並ぶ一対のピン孔をそれぞれ有する複数のリンクプレートと、複数の連結ピンとを備えるとともに、前記複数のリンクプレートが前記ピン孔において前記連結ピンによって回動自在に直列に連結されて形成されており、
    　各リンクプレートは、前記進退方向における一端部に前記連結ピンと直交する方向に延びる噛合面を有するとともに前記進退方向における他端部に前記連結ピンと直交する方向に延びる係合面を有し、
    　対をなす前記チェーン部材同士が噛み合って一体化された状態では、前記チェーン部材同士が、それらの前記リンクプレートの前記噛合面において噛合するとともにそれらの前記リンクプレートの前記係合面において係合し、
    　対をなす前記チェーン部材のうち、一方の前記チェーン部材の前記リンクプレートは第１リンクプレートであり、他方の前記チェーン部材の前記リンクプレートは第２リンクプレートであり、
    　前記第１リンクプレートの前記噛合面は第１噛合面であり、
    　前記第２リンクプレートの前記噛合面は第２噛合面であり、
    　前記第１噛合面には、前記第１噛合面に沿って延びる噛合凸部が設けられており、
    　前記第２噛合面には、前記第１噛合面と前記第２噛合面とが噛合した場合に前記噛合凸部と嵌合される噛合凹部が前記第２噛合面に沿って延びるように設けられていることを特徴とする噛合チェーン。     It has at least a pair of chain members that can advance and retreat, and while the paired chain members move in the traveling direction, they mesh with each other to be integrated, and from the integrated meshing state, the chain members move in the retreating direction. A meshing chain that is disengaged and branched by being moved to
    Each chain member includes a plurality of link plates each having a pair of pin holes aligned in the forward and backward directions, and a plurality of connection pins, and the plurality of link plates are serially rotatably connected to the pin holes by the connection pins in the pin holes. It is formed by being connected,
    Each link plate has an engagement surface extending in a direction perpendicular to the connection pin at the other end in the advance and retreat direction, having an engagement surface extending in a direction perpendicular to the connection pin at one end in the advance and retreat direction,
    In a state where the paired chain members are engaged with each other and integrated, the chain members are engaged with each other at the engagement surfaces of the link plates and are engaged at the engagement surfaces of the link plates. ,
    Among the paired chain members, the link plate of one of the chain members is a first link plate, and the link plate of the other chain member is a second link plate,
    The engagement surface of the first link plate is a first engagement surface,
    The engagement surface of the second link plate is a second engagement surface,
    The first meshing surface is provided with a meshing protrusion extending along the first meshing surface,
    The second meshing surface is provided with a meshing concave portion fitted with the meshing convex portion when the first meshing surface and the second meshing surface mesh with each other so as to extend along the second meshing surface. An interlocking chain characterized in that:
  3. 　前記係合面には、互いに前記係合面において係合した前記リンクプレート同士の前記係合面の延びる方向における位置ずれを抑制する凹凸面が設けられていることを特徴とする請求項１または請求項２に記載の噛合チェーン。 The uneven surface which suppresses the position gap in the extending direction of the said engagement surface between the said link plates mutually engaged in the said engagement surface in the said engagement surface is provided, The said uneven surface. The meshing chain according to claim 2.
  4. 　前記凹凸面は、曲面であることを特徴とする請求項３に記載の噛合チェーン。 The engagement chain according to claim 3, wherein the uneven surface is a curved surface.
  5. 　請求項１～請求項４のうちいずれか一項に記載の噛合チェーンと、前記噛合チェーンに連結されて前記噛合チェーンとともに前記噛合チェーンの進退方向へ移動可能な可動体とを備えた可動体移動装置。 A movable body movement comprising: the meshing chain according to any one of claims 1 to 4; and a movable body connected to the meshing chain and movable together with the meshing chain in the direction of movement of the meshing chain. apparatus.
PCT/JP2019/030422 2018-08-07 2019-08-02 Meshing chain and movable body movement device WO2020031878A1 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012237406A (en) * 2011-05-12 2012-12-06 Tsubakimoto Chain Co Meshing chain unit
JP2014081058A (en) * 2012-10-18 2014-05-08 Tsubakimoto Chain Co Push-pull dual purpose chain and advancing/backing operation device
JP2017149505A (en) * 2016-02-22 2017-08-31 株式会社椿本チエイン Engagement chain and movable body moving device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012237406A (en) * 2011-05-12 2012-12-06 Tsubakimoto Chain Co Meshing chain unit
JP2014081058A (en) * 2012-10-18 2014-05-08 Tsubakimoto Chain Co Push-pull dual purpose chain and advancing/backing operation device
JP2017149505A (en) * 2016-02-22 2017-08-31 株式会社椿本チエイン Engagement chain and movable body moving device

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