Chain

Abstract

The chain is provided with: a plurality of first links that are rotatably connected to each other and form a first helical link connection body that extends helically; a plurality of second links that are rotatably connected to each other and form a second helical link connection body that extends helically; and a plurality of connecting members that connect the first and second helical link connectors by connecting the corresponding first and second links, respectively, to form a double helical structure.

Description

Technical Field

[0001] This disclosure involves a chain. Background Technology

[0002] For example, Patent Document 1 discloses a chain that can be bent in multiple directions when viewed in the extension direction (travel direction).

[0003] Prior art literature

[0004] Patent documents

[0005] Patent Document 1: Japanese Patent Application Publication No. 7-4473 Summary of the Invention

[0006] Summary of the invention

[0007] The problem that the invention aims to solve

[0008] However, in the case of the chain described in Patent Document 1, the drive source, such as the gear that engages with the chain, needs to have a special shape. Alternatively, the chain needs to be equipped with rollers or other options in order to engage with the drive source. Therefore, the chain has low versatility.

[0009] Therefore, the subject of this disclosure is a highly versatile structure that can be used without modification in chains that can be bent in multiple directions when viewed in the extended direction.

[0010] Solution for solving the problem

[0011] To address the aforementioned issues, according to a solution disclosed herein,

[0012] A chain is provided, which has:

[0013] Multiple first links are interconnected to form a rotatable first helical link connection that extends in a helical shape;

[0014] Multiple second links are interconnected to form a rotatable, spiral-extending second spiral link connection.

[0015] Multiple connecting components are used to connect the first and second spiral connecting rods by connecting the corresponding first connecting rods and second connecting rods respectively, thereby forming a double spiral structure.

[0016] Invention Effects

[0017] According to this disclosure, among chains that can be bent in multiple directions when viewed in the extended direction, there is a highly versatile structure that can be used even without modification. Attached Figure Description

[0018] Figure 1This is a perspective view of a portion of the chain in Embodiment 1 of this disclosure.

[0019] Figure 2 This is a top view of a portion of the chain in embodiment 1.

[0020] Figure 3 This is an exploded perspective view of a portion of the chain in Embodiment 1.

[0021] Figure 4A It is a three-dimensional diagram of multiple first links that are interconnected.

[0022] Figure 4B This is a front view of multiple first links (first helical link connectors) that are interconnected.

[0023] Figure 4C It is an exploded 3D diagram of multiple first links.

[0024] Figure 5A It is a three-dimensional diagram of multiple interconnected second links.

[0025] Figure 5B This is a front view of multiple interconnected second links (second helical link connections).

[0026] Figure 5C It is an exploded 3D diagram of multiple second links.

[0027] Figure 6 It is a three-dimensional diagram showing the first and second helical connecting rods that constitute a double helical structure.

[0028] Figure 7 This is a perspective view showing the first and second links connected via connecting members.

[0029] Figure 8 It is an exploded perspective view used to illustrate the connection of multiple first and second links via multiple connecting members.

[0030] Figure 9A yes Figure 1 The cross-sectional view of the chain along line S1-S1 is shown.

[0031] Figure 9B yes Figure 1 The cross-sectional view of the chain along line S2-S2 is shown.

[0032] Figure 10A It is a three-dimensional diagram showing a portion of a chain that bends to one side in the width direction.

[0033] Figure 10B It is a three-dimensional diagram showing a portion of a chain that bends to the opposite side in the width direction.

[0034] Figure 10C It is a three-dimensional diagram showing a portion of a chain that bends towards one side of its thickness.

[0035] Figure 10D It is a three-dimensional diagram showing a portion of a chain that bends to the opposite side in the thickness direction.

[0036] Figure 11 This is a perspective view of the chain in Embodiment 1, showing the state of engagement with multiple sprockets.

[0037] Figure 12 This is a perspective view showing the chain and an example of a rotating body in Embodiment 1.

[0038] Figure 13 This is a perspective view showing the chain of Embodiment 1 and a rotating body of another example.

[0039] Figure 14 This is a perspective view of the chain in embodiment 1, which is endless.

[0040] Figure 15 This is a perspective view of a portion of the chain in embodiment 2.

[0041] Figure 16 This is a top view of a portion of the chain in embodiment 2.

[0042] Figure 17 This is an exploded perspective view of a portion of the chain in embodiment 2.

[0043] Figure 18A This is a front view of multiple interconnected first links (first helical link connectors).

[0044] Figure 18B This is a front view of multiple interconnected second links (second helical link connections).

[0045] Figure 19A yes Figure 15 The cross-sectional view of the chain along line S3-S3 is shown.

[0046] Figure 19B yes Figure 15 The cross-sectional view of the chain along line S4-S4 is shown.

[0047] Figure 20 This is a perspective view of a portion of the chain in embodiment 3.

[0048] Figure 21 This is an exploded perspective view of a portion of the chain in embodiment 3.

[0049] Figure 22A These are the front views of the multiple interconnected first links (first helical link connectors).

[0050] Figure 22B These are the front views of the multiple interconnected second links (second helical link connectors).

[0051] Figure 23A yes Figure 20 The images show cross-sectional views of the chains along lines S5-S5.

[0052] Figure 23B yes Figure 20 The images show cross-sectional views of the chains along lines S6-S6.

[0053] Figure 24 This is a perspective view of a portion of the chain in embodiment 4.

[0054] Figure 25 This is an exploded perspective view of a portion of the chain in embodiment 4.

[0055] Figure 26A These are the front views of the multiple interconnected first links (first helical link connectors).

[0056] Figure 26B These are the front views of the multiple interconnected first links (first helical link connectors).

[0057] Figure 27A yes Figure 24 The images show cross-sectional views of the chains along lines S7-S7.

[0058] Figure 27B yes Figure 24 The images show cross-sectional views of the chains along lines S8-S8.

[0059] Figure 28 This is a perspective view of a portion of the chain in embodiment 5.

[0060] Figure 29 This is an exploded perspective view of a portion of the chain in embodiment 5.

[0061] Figure 30A These are the front views of the multiple interconnected first links (first helical link connectors).

[0062] Figure 30B These are the front views of the multiple interconnected second links (second helical link connectors).

[0063] Figure 31 It is an exploded perspective view used to illustrate the connection of multiple first and second links via multiple connecting members.

[0064] Figure 32 This is a perspective view of a portion of the chain in embodiment 6.

[0065] Figure 33 This is a perspective view of the first and second connecting structural members in the chain of embodiment 6.

[0066] Figure 34 This is a perspective view showing the first and second links connected via connecting members.

[0067] Figure 35 yes Figure 32 The cross-sectional view of the chain along line S9-S9 is shown.

[0068] Figure 36 This is a perspective view showing another example of a connector.

[0069] Figure 37 This is a three-dimensional diagram showing yet another example of a connector.

[0070] Figure 38 This is a three-dimensional diagram of a part of a chain of changes.

[0071] Figure 39 This is a three-dimensional diagram of part of a chain of changes in another example.

[0072] Figure 40 This is a three-dimensional diagram of another example of a chain of changes. Detailed Implementation

[0073] One embodiment of the chain disclosed herein comprises: a plurality of first links interconnected to form a first spiral link connection body extending in a spiral shape; a plurality of second links interconnected to form a second spiral link connection body extending in a spiral shape; and a plurality of connecting members that connect the first and second spiral link connection bodies by respectively connecting the corresponding first links and second links, thereby forming a double spiral structure.

[0074] According to this scheme, among chains that can be bent in multiple directions when viewed in the extension direction, there is a highly versatile structure that can be used even without modification.

[0075] For example, each of the first links rotates relative to another first link connected to one side about a first rotation center line, and rotates relative to another first link connected to the other side about a second rotation center line extending in a direction different from the first rotation center line when viewed from the extension direction of the chain. Furthermore, each of the second links rotates relative to another second link connected to one side about a third rotation center line, and rotates relative to another second link connected to the other side about a fourth rotation center line extending in a direction different from the third rotation center line when viewed from the extension direction. The connecting member connects the first and second helical link connecting bodies such that the first rotation center line of each of the first links and the third rotation center line of the corresponding second link are on the same straight line, and the second rotation center line of each of the first links and the fourth rotation center line of the corresponding second link are on the same straight line.

[0076] For example, the chain may have a first pin and a second pin as the connecting components. The first pin connects two consecutive first links and supports them so that they can rotate relative to each other about a first rotation center line, and connects two consecutive second links and supports them so that they can rotate relative to each other about a third rotation center line. The second pin connects two consecutive first links and supports them so that they can rotate relative to each other about a second rotation center line, and connects two consecutive second links and supports them so that they can rotate relative to each other about a fourth rotation center line.

[0077] For example, the chain may have a first joint and a second joint as the connecting components. The first joint includes a first link support portion that connects two consecutive first links and supports them so that they can rotate relative to each other about a first rotation center line, a second link support portion that connects two consecutive second links and supports them so that they can rotate relative to each other about a third rotation center line, and a main body portion having a space extending through the chain in the extension direction. The second joint includes a third link support portion that connects two consecutive first links and supports them so that they can rotate relative to each other about a second rotation center line, a fourth link support portion that connects two consecutive second links and supports them so that they can rotate relative to each other about a fourth rotation center line, and a main body portion having a space extending through the chain in the extension direction.

[0078] For example, when viewed in the extended direction, the first rotation center line and the second rotation center line are orthogonal at an angle of 90 degrees.

[0079] For example, when viewed in the extended direction, the first rotation center line intersects the second rotation center line at an angle of 60 degrees.

[0080] For example, the first and second links may have an L-shape when viewed in the extension direction of the chain, so that the outline of the first and second spiral link connectors is rectangular when viewed in the extension direction of the chain.

[0081] For example, the first and second links may have an arc shape when viewed in the extension direction of the chain, so that the outline of the first and second spiral link connectors is circular when viewed in the extension direction of the chain.

[0082] For example, the first link and the second link can have the same shape.

[0083] For example, the first link could be a series of different types of first links with different shapes, and the second link could be a series of different types of second links with different shapes.

[0084] For example, the first links of the plurality of types and the second links of the plurality of types may contain links of the same shape.

[0085] Hereinafter, several embodiments of the present disclosure will be described with reference to the accompanying drawings.

[0086] (Implementation Method 1)

[0087] Figure 1 This is a perspective view of a portion of the chain in Embodiment 1 of this disclosure. Furthermore, Figure 2 This is a top view of a portion of the chain in Embodiment 1. Furthermore, Figure 3 This is an exploded perspective view of the chain in Implementation Method 1.

[0088] It should be noted that the XYZ orthogonal coordinate system shown in the figure is for ease of understanding of the embodiments of this disclosure and does not limit the embodiments of this disclosure. The Z-axis direction represents the extension direction of the chain, the X-axis direction represents the width direction, and the Y-axis direction represents the thickness direction.

[0089] It should be noted that when using a chain, the extension direction of the chain (Z-axis direction) is the direction of chain movement. When the chain moves along a straight path, the extension direction of the chain corresponds to the extension direction of the straight path. When the chain moves along a curved path, the extension direction of the chain corresponds to the tangent direction of the curved path. Furthermore, in some of the accompanying drawings, for ease of understanding of the embodiments of this disclosure, a hollow arrow FD is used to indicate the direction of chain movement.

[0090] like Figures 1-3 As shown, the chain 10 of Embodiment 1 has a plurality of first links 20 and a plurality of second links 30.

[0091] Figure 4AIt is a three-dimensional diagram of multiple first links in an interconnected state. Furthermore, Figure 4B This is a front view of multiple first links (first helical link connections) in an interconnected state. Furthermore, Figure 4C It is an exploded 3D diagram of multiple first links.

[0092] like Figures 4A to 4C As shown, in Embodiment 1, the plurality of first links 20 have the same shape. Furthermore, in Embodiment 1, the first links 20 extend along the extending direction (Z-axis direction) of the chain 10 and are bent when viewed from the extending direction of the chain 10. That is, the first links 20 have an L-shaped shape when viewed from the extending direction of the chain 10.

[0093] In addition, such as Figure 3 and Figures 4A to 4C As shown, multiple first links 20 are connected in series. That is, each first link 20 is connected to the other side of another first link 20 on one side of the extension direction (Z-axis direction) of the chain 10, and on the other side of the chain 10, it is connected to the other side of another first link 20. It should be noted that details of the specific connection method will be described later.

[0094] Furthermore, the first link 20 rotates around the first and second rotation center lines C1 and C2, respectively. Specifically, the first link 20 is configured such that it can rotate around the first rotation center line C1 relative to other first links 20 connected to one side, and is configured such that it can rotate around the second rotation center line C2 relative to other first links 20 connected to the other side.

[0095] The first rotation center line C1 and the second rotation center line C2 extend in different directions. Specifically, when viewed from the extension direction (Z-axis direction) of the chain 10, the first rotation center line C1 and the second rotation center line C2 intersect. In the case of Embodiment 1, the extension direction (X-axis direction) of the first rotation center line C1 and the extension direction (Y-axis direction) of the second rotation center line C2 intersect at a substantially 90-degree angle when viewed from the extension direction of the chain 10.

[0096] When multiple first links 20 are rotatably connected in series to other first links 20 around the first and second rotation center lines C1 and C2 respectively, such as Figure 3 As shown, a first helical link connection 40 is formed, extending in a spiral shape. The first helical link connection 40 is a deformable link connection having a plurality of first rotation center lines C1 and a plurality of second rotation center lines C2 alternately arranged along the extension direction (Z-axis direction) of the chain 10.

[0097] It should be noted that the term "spiral" as used in this specification refers to a three-dimensional curve that winds around a reference line extending in one direction while moving forward in the direction of the reference line. In this disclosure, a line extending along the extension direction (Z-axis direction) of the chain 10 and passing through the cross-sectional shape of the chain 10 orthogonal to the extension direction (i.e., a line located within the contour of the cross-sectional shape when viewed in the extension direction) is equivalent to the reference line of the spiral.

[0098] As described above, in Embodiment 1, the plurality of first links 20 have the same shape, and when viewed in the extending direction (Z-axis direction) of the chain 10, the first and second rotation center lines C1 and C2 are substantially orthogonal. Therefore, as Figure 4A As shown, four consecutive first links 20 correspond to one cycle (one pitch) of the first helical link connector 40. Furthermore, when viewed in the extension direction (Z-axis direction) of the chain 10, as... Figure 4B As shown, the four consecutive first links 20, namely the first helical link connector 40, actually have a square-shaped outline.

[0099] Figure 5A It is a three-dimensional diagram of multiple interconnected second links. Furthermore, Figure 5B This is a front view of multiple interconnected second links (second helical link connections). Furthermore, Figure 5C It is an exploded 3D diagram of multiple second links.

[0100] like Figures 5A to 5C As shown, in Embodiment 1, the plurality of second links 30 have the same shape. Furthermore, in Embodiment 1, the first link 20 and the second link 30 have the same shape. That is, the chain 10 of Embodiment 1 is composed of one type of link. Therefore, the second link 30 also extends along the extending direction (Z-axis direction) of the chain 10 and is bent when viewed in the extending direction of the chain 10. That is, the second link 30 also has an L-shaped shape when viewed in the extending direction of the chain 10.

[0101] In addition, such as Figure 3 and Figures 5A to 5C As shown, multiple second links 30 are connected in series. That is, each second link 30 is connected on one side of the chain 10 along its extension direction (Z-axis direction) to the other side of another second link 30, and on the other side, it is connected to one side of another second link 30. Details regarding the specific connection method will be described later.

[0102] Furthermore, the second link 30 is respectively connected such that it can rotate about the third rotation center line C3 relative to other second link 30 connected to one side, and is also connected such that it can rotate about the fourth rotation center line C4 relative to other second link 30 connected to the other side.

[0103] The aforementioned third rotation center line C3 and fourth rotation center line C4 extend in different directions. Specifically, when viewed from the extension direction (Z-axis direction) of the chain 10, the third rotation center line C3 and the fourth rotation center line C4 intersect. In the case of Embodiment 1, the extension direction (X-axis direction) of the third rotation center line C3 and the extension direction (Y-axis direction) of the fourth rotation center line C4 intersect substantially at a 90-degree angle when viewed from the extension direction of the chain 10.

[0104] When multiple second links 30 are rotatably connected in series to other second links 30 around the third and fourth rotation center lines C3 and C4 respectively, such as Figure 3 As shown, a second helical link connection 50 is formed, extending in a spiral shape. The second helical link connection 50 is a deformable link connection having a plurality of third rotation center lines C3 and a plurality of fourth rotation center lines C4 alternately arranged along the extension direction (Z-axis direction) of the chain 10.

[0105] As described above, in Embodiment 1, the plurality of second links 30 are of the same shape, and the third and fourth rotation center lines C3 and C4 are substantially orthogonal when viewed in the extension direction (Z-axis direction) of the chain 10. Therefore, as Figure 5A As shown, four consecutive second links 30 correspond to one cycle of the second helical link connector 50. Furthermore, when viewed from the extension direction (Z-axis direction) of the chain 10, as... Figure 5B As shown, the four consecutive second links 30, namely the second helical link connector 50, actually have a square-shaped outline.

[0106] A first helical link 40, formed by a plurality of first links 20, and a second helical link 50, formed by a plurality of second links 30, are connected by a connecting member to form a chain 10. Specifically, the first helical link 40 and the second helical link 50 are connected in a manner that forms a double helical structure.

[0107] Figure 6 It is a three-dimensional diagram showing the first and second helical connecting rods that form a double helical structure.

[0108] like Figure 6 As shown, the first helical connecting rod 40 and the second helical connecting rod 50 form a double helical structure without direct contact with each other.

[0109] Specifically, the first rotation center line C1 of the first link 20 forming the first helical link connector 40 and the third rotation center line C3 of the second link 30 forming the second helical link connector 50 are on the same straight line. Furthermore, the second rotation center line C2 of the first link 20 and the fourth rotation center line C4 of the second link 30 are on the same straight line. Thus, the first helical link connector 40 and the second helical link connector 50 form a double helical structure without direct contact with each other. It should be noted that, strictly speaking, it is sufficient that the first helical link connector 40 and the second helical link connector 50 do not directly contact each other when at least the chain 10 extends in a straight line. This is because otherwise, the chain 10 cannot be bent.

[0110] The connection between the first helical link 40 and the second helical link 50 is achieved via a connecting member.

[0111] Figure 7 This is a perspective view showing the first and second links connected via a connecting member. Furthermore, Figure 8 This is an exploded perspective view illustrating the connection of multiple first and second links via multiple connecting members. Furthermore, Figure 9A yes Figure 1 The diagram shows a cross-sectional view of the chain along line S1-S1. Furthermore, Figure 9B yes Figure 1 The cross-sectional view of the chain along line S2-S2 is shown.

[0112] like Figures 7 to 9B As shown, in this embodiment 1, the chain 10 has first and second pins 60 and 62 as connecting members. The first link 20 in the first helical link connector 40 and the second link 30 in the second helical link connector 50 are connected via the first and second pins 60 and 62.

[0113] The first pin 60 supports the first link 20 and the second link 30 to rotate. Specifically, the first pin 60 supports the first link 20 at either its base or front end to rotate about a first rotation center line C1. Furthermore, the first pin 60 supports the second link 30 at the other end to rotate about a third rotation center line C3. Through this support based on the first pin 60, the first rotation center line C1 of the first link 20 and the third rotation center line C3 of the second link 30 are on the same straight line.

[0114] Furthermore, the first pin 60 supports two consecutive first connecting rods 20 so that they can rotate about a first rotation center line C1. Thus, the two consecutive first connecting rods 20 are connected so that they can rotate about the first rotation center line C1. Simultaneously, the first pin 60 supports two consecutive second connecting rods 30 so that they can rotate about a third rotation center line C3. Thus, the two consecutive second connecting rods 30 are connected so that they can rotate about the third rotation center line C3. In other words, the first pin 60 supports both the two first connecting rods 20 and the two second connecting rods 30 so that they can rotate.

[0115] The second pin 62 also supports the first link 20 and the second link 30 to rotate. Specifically, the second pin 62 supports the first link 20 at one of its base end and its front end to rotate around the second rotation center line C2. Furthermore, the second pin 62 supports the second link 30 at the other of its base end and its front end to rotate around the fourth rotation center line C4. Through this support based on the second pin 62, the second rotation center line C2 of the first link 20 and the fourth rotation center line C4 of the second link 30 are on the same straight line.

[0116] Furthermore, the second pin 62 supports two consecutive first connecting rods 20 so that they can rotate about the second rotation center line C2. Thus, the two consecutive first connecting rods 20 are connected so that they can rotate about the second rotation center line C2. Simultaneously, the second pin 62 supports two consecutive second connecting rods 30 so that they can rotate about the fourth rotation center line C4. Thus, the two consecutive second connecting rods 30 are connected so that they can rotate about the fourth rotation center line C4. In other words, the second pin 62 supports both the two first connecting rods 20 and the two second connecting rods 30 so that they can rotate.

[0117] It should be noted that, in the case of embodiment 1, the first and second pins 60 and 62 have the same shape.

[0118] In the case of embodiment 1, in order to be rotatably supported by the first and second pins 60, 62, such as Figure 8As shown, the first and second connecting rods 20 and 30 respectively have two through holes 20a and 30a for inserting the first and second pins 60 and 62. In the first connecting rod 20, one through hole 20a extends along the extension direction of the first rotation center line C1, and the other through hole 20a extends along the extension direction of the second rotation center line C2. In the second connecting rod 30, one through hole 30a extends along the extension direction of the third rotation center line C3, and the other through hole 30a extends along the extension direction of the fourth rotation center line C4. By inserting the first and second pins 60 and 62 into such through holes 20a, the first pin 60 supports the first connecting rod 20 so that it can rotate around the first rotation center line C1, and the second pin 62 supports the first connecting rod 20 so that it can rotate around the second rotation center line C2. Similarly, by inserting the first and second pins 60 and 62 into the through hole 30a, the first pin 60 supports the second link 30 so that it can rotate about the third rotation center line C3, and the second pin 62 supports the second link 30 so that it can rotate about the fourth rotation center line C4.

[0119] It should be noted that retaining rings 64 are installed at the front ends of the first and second pins 60 and 62 to prevent them from detaching from the first and second connecting rods 20 and 30. Furthermore, in embodiment 1, as... Figure 9A and Figure 9B As shown, rollers 66 are mounted on the first and second pins 60 and 62 via bushings 68. It should be noted that rollers 66 and bushings 68 can be provided in both cases, or both can be omitted. Furthermore, rollers 66 can be provided alone if necessary. Regarding the prevention of detachment of the first and second pins 60 and 62 from the first and second connecting rods 20 and 30, the use of retaining rings 64 is not limited to this; cotter pins, for example, can be used. Alternatively, the first and second pins 60 and 62 can be connected to the first and second connecting rods 20 and 30 through processes such as riveting, without the use of other components.

[0120] Furthermore, in this embodiment 1, multiple first and second pins 60, 62 respectively support the two first links 20 and the two second links 30 so that they can rotate. In contrast, the first and second pins 60, 62 can be integrally provided on the first links 20 and the second links 30.

[0121] like Figure 9A and Figure 9BAs shown, each of the first connecting rods 20 has an inner portion disposed inside the other first connecting rod 20 connected to one side and an outer portion disposed outside the other first connecting rod 20 connected to the other side. Similarly, each of the second connecting rods 30 also has an inner portion disposed inside the other second connecting rod 30 connected to one side and an outer portion disposed outside the other second connecting rod 30 connected to the other side. For example, a bushing 68 can be integrally provided on the inner portions of the first connecting rod 20 and the inner portions of the second connecting rod 30, and the first and second pins 60 and 62 can pass through the bushing 68 and be integrally provided on the outer portions of the first connecting rod 20 and the outer portions of the second connecting rod 30. That is, when the bushing 68 is not rotatably supported on the inner portions of the first and second connecting rods 20 and 30 respectively, the first and second pins 60 and 62, which are not rotatably supported on the outer portions of the first and second connecting rods 20 and 30 respectively, can be rotatably supported on the bushing 68.

[0122] It should be noted that, as a method for integrally setting the first and second pins 60 and 62 onto the first and second connecting rods 20 and 30, there are methods such as "interference fit". To briefly explain the "interference fit", firstly, through holes are provided in the first and second connecting rods 20 and 30. The first and second pins 60 and 62 are pressed into these through holes. As a result, the first and second pins 60 and 62 are supported in the through holes without rotation.

[0123] Figures 10A to 10D These are three-dimensional diagrams representing parts of a chain bending in different directions.

[0124] like Figure 10A and Figure 10B As shown, when the first link 20 (20A) rotates about the second rotation center line C2 (C2A) to one side or the other side in the width direction (X-axis direction), the corresponding second link 30 (30A) rotates about the fourth rotation center line C4 (C4A) located on the same straight line as the second rotation center line C2 (C2A) in the same direction.

[0125] It should be noted that in this specification, when there is a first link and a second link, and the relative position of the other link with respect to the first link remains substantially constant, i.e., when the other link cannot move relative to the first link, there is a "correspondence relationship" between the first link and the second link. In the case of Embodiment 1, as... Figure 7 As shown, the first link 20 and the second link 30, supported by the common first and second pins 60 and 62, are in a corresponding relationship.

[0126] In addition, such as Figure 10C and Figure 10DAs shown, when the first link 20 (20B) rotates about the first rotation center line C1 (C1B) in one or the other direction of the thickness (Y-axis), the corresponding second link 30 (30B) rotates about the third rotation center line C3 (C3B) located on the same straight line as the first rotation center line C1 (C1B).

[0127] In this way, the first link 20 and the corresponding second link 30 rotate synchronously, thereby allowing the chain 10 to bend in both the width (X-axis) and thickness (Y-axis) directions when viewed in its extension direction (Z-axis direction). That is, in Embodiment 1, the chain 10 can bend in four directions when viewed in its extension direction. Therefore, the chain 10 can freely change its direction of travel. As a result, not only can it travel along straight paths, but the chain 10 can also move along complex, curved paths.

[0128] Figure 11 This is a perspective view of the chain in Embodiment 1, showing its engagement with multiple sprockets. It should be noted that... Figure 11 In the diagram, the teeth of sprockets W1 and W2 are omitted.

[0129] like Figure 11 As shown, chain 10 can move along various curved paths. Therefore, for example, it can engage with multiple sprockets W1 and W2 whose extension directions are different from the rotation center lines Wa and Wb. It should be noted that, as... Figure 2 As shown, the teeth of sprockets W1 and W2 enter the gap G formed between the first link 20 and the second link 30, thereby engaging with the chain 10. That is, the teeth of sprockets W1 and W2 contact the first link 20 and the second link 30 along the extension direction (Z-axis direction) of the chain 10, thereby driving the chain 10 along its extension direction.

[0130] Furthermore, according to the chain 10 of Embodiment 1, sprockets W1 and W2 can engage in the width direction (X-axis direction) and also in the thickness direction (Y-axis direction) of the chain 10. This is because the first link 20 and the second link 30, which engage with the teeth of sprockets W1 and W2, form first and second helical link connectors 40 and 50. As a result, sprockets W1 and W2 can engage with the chain 10 from four directions when viewed in the extending direction (Z-axis direction) of the chain 10.

[0131] It should be noted that, as with the chain 10 in Embodiment 1, belts, threads, etc., exist as power transmission components that can freely change the direction of travel in order to move along complex paths. However, unlike chains, belts and threads are prone to twisting, and therefore their power transmission efficiency is lower than that of chains. Moreover, as... Figure 11When the pulleys are freely configured as shown by sprockets W1 and W2, the belt and thread may slip on the pulleys if they are not engaged with the pulleys under sufficient tension. Therefore, the chain 10 of Embodiment 1 can move along a complex path in the same way as the belt and thread, and has a higher power transmission efficiency than the belt and thread.

[0132] Furthermore, because it is more difficult to twist than belts or threads, various options can be installed on the chain 10. For example, accessories for mounting other components to the chain 10 can be integrally or detachably provided on the first link 20 (and / or the second link 30) of the chain 10. Moreover, for example, a plastic cover can be provided on the chain 10.

[0133] Furthermore, in chain 10 of embodiment 1, such as Figure 6 As shown, a first helical link connection 40 formed by multiple first links 20 and a second helical link connection 50 formed by multiple second links 30 constitute a double helical structure. That is, the first and second helical link connections 40 and 50 resemble the threads of a so-called double-ended thread. Therefore, it is possible to drive various rotating bodies, and it is also possible to be driven by various rotating bodies.

[0134] Figure 12 This is a perspective view showing the chain and an example of a rotating body in Embodiment 1. Furthermore, Figure 13 This is a perspective view showing the chain of Embodiment 1 and a rotating body of another example.

[0135] like Figure 12 As shown, chain 10 can engage with rotating bodies R1 and R2, which have rotation center lines Ra and Rb extending along the extending direction (Z-axis direction) of chain 10. Rotating bodies R1 and R2 have rollers, teeth, etc., that enter the gap G between the first link 20 and the second link 30 of chain 10. Furthermore, rotating bodies R1 and R2 are positioned opposite each other across chain 10 along the width direction (X-axis direction). Therefore, when chain 10 moves along its extending direction (Z-axis direction), rotating bodies R1 and R2 are driven to rotate. Conversely, when rotating bodies R1 and R2 rotate in opposite directions, chain 10 is driven along its extending direction.

[0136] In addition, such as Figure 13 As shown, the chain 10 can engage with the rotating bodies R3 and R4, which have rotation center lines Rc and Rd extending in a direction orthogonal to the extension direction (Z-axis direction) of the chain 10. Figure 13The rotation center lines Rc and Rd of the rotating bodies R3 and R4 shown extend along the thickness direction (Y-axis direction) of the chain 10. Furthermore, the rotating bodies R3 and R4 have teeth that enter the gap G between the first link 20 and the second link 30 of the chain 10. In addition, the rotating bodies R3 and R4 are positioned opposite each other across the chain 10 along the width direction (X-axis direction). Therefore, when the chain 10 moves along its extension direction (Z-axis direction), the rotating bodies R3 and R4 are driven to rotate. Conversely, when the rotating bodies R3 and R4 rotate in opposite directions, the chain 10 is driven along its extension direction.

[0137] It should be noted that the chain 10 is not limited to having an end; it can be without an end.

[0138] Figure 14 This is a three-dimensional view of the chain in embodiment 1, which is endless.

[0139] like Figure 14 As shown, the chain 10 can be endless depending on its application. By adopting an endless or endless form, the chain 10 can be used in a variety of applications, thus possessing high versatility.

[0140] According to the above-described embodiment 1, the chain 10, which can be bent in multiple directions when viewed in the extension direction, has a highly versatile structure that can be used even without modification.

[0141] (Implementation Method 2)

[0142] Implementation method 2 is substantially the same as implementation method 1, except for the differences in the shapes of the first and second connecting rods. Otherwise, implementation method 2 is almost identical to implementation method 1. Therefore, implementation method 2 will be described focusing on the differences.

[0143] Figure 15 This is a perspective view of a portion of the chain in embodiment 2. Furthermore, Figure 16 This is a top view of a portion of the chain in embodiment 2. Furthermore, Figure 17 This is an exploded perspective view of a portion of the chain in Embodiment 2. Furthermore, Figure 18A , Figure 18B These are the front views of the various first and second links (first and second helical link connections) that are interconnected. Figure 19A , Figure 19B yes Figure 15 The images show cross-sectional views of the chains along lines S3-S3 and S4-S4, respectively.

[0144] like Figures 15-19BAs shown, in the chain 110 of Embodiment 2, the plurality of first links 120 forming the first helical link connector 140 have the same shape. Furthermore, the plurality of second links 130 forming the second helical link connector 150 have the same shape. Moreover, in this Embodiment 2, the first links 120 and the second links 130 have the same shape. That is, the chain 110 of Embodiment 2 is composed of a single type of link.

[0145] In addition, such as Figure 18A and Figure 18B As shown, the first link 120 and the second link 130 have an arc shape when viewed in the extension direction (Z-axis direction) of the chain 10. As a result, the first and second helical link connectors 140 and 150 are substantially circular in shape when viewed in the extension direction of the chain 110.

[0146] In addition, such as Figure 19A and Figure 19B As shown, the first link 120 and the second link 130 are connected and supported by the first and second pins 160 and 162, respectively, such that the first rotation center line C1 and the third rotation center line C3 are on the same straight line and the second rotation center line C2 and the fourth rotation center line C4 are on the same straight line.

[0147] This embodiment 2 is similar to embodiment 1 above. The chain 110, which can be bent in multiple directions when viewed in the extension direction, has a highly versatile structure that can be used even without modification.

[0148] It should be noted that, in the case of this embodiment 2, such as Figure 19A and Figure 19B As shown, the chain 110 is circular when viewed in the extension direction (Z-axis direction), thus making it suitable for movement within a circular tube.

[0149] (Implementation Method 3)

[0150] In the case of the above-described embodiment 1, such as Figure 3 As shown, the plurality of first links 20 forming the first helical link connector 40 are of one type. Furthermore, the plurality of second links 30 forming the second helical link connector 50 are also of one type. In contrast, in Embodiment 3, the plurality of first links forming the first helical link connector are of multiple types with different shapes, and the plurality of second links forming the second helical link connector are of multiple types with different shapes. Otherwise, Embodiment 3 is almost identical to Embodiment 1. Therefore, Embodiment 3 will be described focusing on this difference.

[0151] Figure 20 This is a perspective view of a portion of the chain in embodiment 3. Furthermore, Figure 21This is an exploded perspective view of a portion of the chain in embodiment 3. Furthermore, Figure 22A , Figure 22B These are the front views of the various first and second links (first and second helical link connections) that are interconnected. Figure 23A , Figure 23B yes Figure 20 The images show cross-sectional views of the chains along lines S5-S5 and S6-S6, respectively.

[0152] like Figures 20-23B As shown, in the chain 210 of Embodiment 3, the first helical link connector 240 is formed by multiple types of first links 220 and 222 with different shapes. Furthermore, the second helical link connector 250 is formed by multiple types of second links 230 and 232 with different shapes.

[0153] Specifically, such as Figure 21 and Figure 22A As shown, the first link 222 is smaller than the first link 220. Moreover, the relatively smaller first link 222 is positioned entirely inside the first link 220. Furthermore, the first links 220 and 222 are alternately connected to form a first helical link connection body 240.

[0154] Similarly, as Figure 21 and Figure 22B As shown, the second link 232 is smaller than the second link 230. Furthermore, the relatively smaller second link 232 is positioned entirely inside the second link 230. In addition, the second links 230 and 232 are alternately connected to form a second helical link connection 250.

[0155] It should be noted that, in this embodiment 3, the first link 220 and the second link 230 have the same shape, and the first link 222 and the second link 232 have the same shape. That is, the chain 210 of embodiment 3 is composed of two types of links.

[0156] In addition, such as Figure 23A and Figure 23B As shown, the first link 220, 222 and the second link 230, 232 are connected and supported by the first and second pins 260, 262 in such a way that the first rotation center line C1 and the third rotation center line C3 are on the same straight line and the second rotation center line C2 and the fourth rotation center line C4 are on the same straight line.

[0157] This embodiment 3, like the embodiment 1 described above, has a highly versatile structure in which the chain 210, which can be bent in multiple directions when viewed in the extension direction, can be used even without modification.

[0158] (Implementation Method 4)

[0159] In the case of the above-described embodiment 3, such as Figure 23A and Figure 23B As shown, the width (X-axis) dimension and thickness (Y-axis) dimension of the cross-section of chain 210 are substantially the same. This determines the shapes of the first links 220, 222 and the second links 230, 232. Therefore, the chain 210 of Embodiment 3 described above can be used without distinguishing between the width and thickness directions. In contrast, the width and thickness dimensions of the cross-section of the chain in Embodiment 4 are different. Otherwise, Embodiment 4 is almost identical to Embodiment 3. Therefore, Embodiment 4 will be described with this difference as the focus.

[0160] Figure 24 This is a perspective view of a portion of the chain in embodiment 4. Furthermore, Figure 25 This is an exploded perspective view of a portion of the chain in embodiment 4. Furthermore, Figure 26A , Figure 26B These are the front views of the various first and second links (first and second helical link connections) that are interconnected. Figure 27A , Figure 27B yes Figure 24 The images show cross-sectional views of the chains along lines S7-S7 and S8-S8, respectively.

[0161] like Figures 24 to 27B As shown, in the chain 310 of Embodiment 4, the first helical link connector 340 is formed by multiple types of first links 320 and 322 with different shapes. Furthermore, the second helical link connector 350 is formed by multiple types of second links 330 and 332 with different shapes.

[0162] Specifically, such as Figure 27A and Figure 27B As shown, in the cross-sectional shape of chain 310, the shapes of the first links 320, 322 and the second links 330, 332 are determined by the fact that the dimension in the width direction (X-axis direction) is larger than the dimension in the thickness direction (Y-axis direction). Specifically, the first links 320, 322 and the second links 330, 332 are each L-shaped, with the dimension in the width direction being larger than the dimension in the thickness direction.

[0163] It should be noted that, in this embodiment 4, the first link 320 and the second link 330 have the same shape, and the first link 322 and the second link 332 have the same shape. That is, the chain 310 of embodiment 4 is composed of two types of links.

[0164] The first link 320 and 322 are connected alternately, such as Figure 26AAs shown, a first helical link connector 340 forms a rectangular shape when viewed in the extension direction (Z-axis direction) of the chain 310. Furthermore, second links 330 and 332 are alternately connected in this manner, as... Figure 26B As shown, a second helical link connector 350 with a rectangular shape is formed when viewed in the extension direction (Z-axis direction) of the chain 310.

[0165] In addition, such as Figure 27A and Figure 27B As shown, the first link 320, 322 and the second link 330, 332 are connected and supported by the first and second pins 360, 362 in such a way that the first rotation center line C1 and the third rotation center line C3 are on the same straight line and the second rotation center line C2 and the fourth rotation center line C4 are on the same straight line.

[0166] This embodiment 4, like the embodiment 1 described above, has a highly versatile structure in which the chain 310, which can be bent in multiple directions when viewed in the extension direction, can be used even without modification.

[0167] (Implementation Method 5)

[0168] In the case of the above-described embodiment 1, such as Figure 4B As shown, the plurality of first links 20 each have a first rotation center line C1 and a second rotation center line C2 that are orthogonal to each other. Furthermore, as... Figure 5B As shown, each of the multiple second links 30 has a mutually orthogonal third rotation center line C3 and a fourth rotation center line C4. In contrast, in the chain of Embodiment 6, the first and second rotation center lines of each first link intersect at an angle different from 90 degrees, and the third and fourth rotation center lines of each second link also intersect at an angle different from 90 degrees. Otherwise, Embodiment 5 is almost identical to Embodiment 1. Therefore, Embodiment 5 will be described with this difference as its focus.

[0169] Figure 28 This is a perspective view of a portion of the chain in embodiment 5. Furthermore, Figure 29 This is an exploded perspective view of a portion of the chain in embodiment 5. Furthermore, Figure 30A , Figure 30B These are the front views of the various first and second links (first and second helical link connections) that are interconnected. Figure 31 It is an exploded perspective view used to illustrate the connection of multiple first and second links via multiple connecting members.

[0170] like Figures 28-31As shown, in the chain 410 of Embodiment 5, the first helical link connector 440 is formed by connecting a plurality of first links 420 having the same shape. Furthermore, the second helical link connector 450 is formed by connecting a plurality of second links 430 having the same shape. In this Embodiment 5, the first and second links 420 and 430 are of the same shape. That is, the chain 410 of Embodiment 5 is composed of a single type of link.

[0171] like Figure 29 and Figure 30A As shown, the first link 420 rotates about the first and second rotation center lines C1 and C2, respectively. Specifically, the first link 420 rotates about the first rotation center line C1 relative to another first link 420 connected to one side, and rotates about the second rotation center line C2 relative to another first link 420 connected to the other side. In the case of this embodiment 5, as... Figure 30A As shown, the first rotation center line C1 and the second rotation center line C2 intersect at an angle of 60 degrees when viewed from the extension direction (Z-axis direction) of the chain 410.

[0172] Based on such a first link 420, six consecutive first links 420 are equivalent to one cycle of the first helical link connection 440.

[0173] like Figure 29 and Figure 30B As shown, the second link 430 rotates around the third and fourth rotation center lines C3 and C4, respectively. Specifically, the second link 430 rotates relative to another second link 430 connected to one side around the third rotation center line C3, and rotates relative to another second link 430 connected to the other side around the fourth rotation center line C4. In the case of this embodiment 5, as... Figure 30B As shown, the third rotation center line C3 and the fourth rotation center line C4 intersect at an angle of 60 degrees when viewed from the extension direction of chain 410 (Z-axis direction).

[0174] Based on such a second link 430, six consecutive second links 430 are equivalent to one cycle of the second helical link connection 450.

[0175] In addition, such as Figure 31 As shown, the first link 420 and the second link 430 are connected and supported by the first and second pins 460 and 462, respectively, such that the first rotation center line C1 and the third rotation center line C3 are on the same straight line and the second rotation center line C2 and the fourth rotation center line C4 are on the same straight line.

[0176] This embodiment 5, like the embodiment 1 described above, has a highly versatile structure in which the chain 410, which can be bent in multiple directions when viewed in the extension direction, can be used even without modification.

[0177] It should be noted that, in this embodiment 5, when viewed from the extending direction (Z-axis direction) of the chain 410, the chain 410 can be bent in six directions. Moreover, the sprocket can engage with the chain 410 from these six directions.

[0178] In addition, when viewed from the direction of chain extension, the angles at which the first and second rotation center lines intersect, and the angles at which the third and fourth rotation center lines intersect, are not limited to 90 degrees or 60 degrees; they can be any angle. However, these angles are preferably integer multiples of 360 degrees. That is, the cycle length of the first and second helical link connections is preferably formed by an integer number of first and second links. This improves the productivity and operability of the chain. For example, as... Figure 14 As shown, the chain can be easily made into an endless shape.

[0179] (Implementation Method 6)

[0180] In the case of Embodiment 1 described above, the first helical link connector 40 and the second helical link connector 50 are connected by a plurality of first and second pins 60, 62. Therefore, as Figure 7 As shown, the corresponding first link 20 and second link 30 are connected by a first pin 60 and a second pin 62. In contrast, in this embodiment 6, the first helical link structure and the second helical link structure are connected via a connecting member different from the pin. Therefore, embodiment 6 will be described with regard to this different connecting member.

[0181] Figure 32 This is a perspective view of a portion of the chain in embodiment 6. Furthermore, Figure 33 This is a perspective view of the first and second connecting structural members in the chain of embodiment 6. Furthermore, Figure 34 This is a perspective view showing the first and second links connected via a connecting member. Furthermore, Figure 35 yes Figure 32 The cross-sectional view of the chain along line S9-S9 is shown.

[0182] like Figures 32-35 As shown, in the chain 510 of embodiment 6, the first helical link connector 540 and the second helical link connector 550 are connected via the first and second joints 560 and 562.

[0183] like Figure 32As shown, the first connector 560 is disposed within a double helical structure formed by the first helical connecting rod 540 and the second helical connecting rod 550. Furthermore, as... Figure 33 As shown, the first connector 560 includes a main body 560a that is "U"-shaped when viewed in the extension direction (Z-axis direction) of the chain 510, and pin-shaped first and second link support portions 560b and 560c extending outward from the main body 560a in opposite directions. The first link support portion 560b connects two consecutive first links 520 and supports them so that they can rotate relative to each other about a first rotation center line C1. Furthermore, the second link support portion 560c connects two consecutive second links 530 and supports them so that they can rotate relative to each other about a third rotation center line C3.

[0184] like Figure 32 As shown, the second connector 562 is disposed within a double helical structure formed by the first helical link connector 540 and the second helical link connector 550. Furthermore, the second connector 562 includes a main body 562a that is "U"-shaped when viewed in the extension direction (Z-axis direction) of the chain 510, and pin-shaped third and fourth link support portions 562b and 562c extending outward from the main body 562a in opposite directions. The third link support portion 562b connects two consecutive first links 520 and supports them so that they can rotate relative to each other about the second rotation center line C2. Furthermore, the fourth link support portion 562c connects two consecutive second links 530 and supports them so that they can rotate relative to each other about the fourth rotation center line C4.

[0185] It should be noted that, in this embodiment 6, the first connector 560 and the second connector 562 have the same shape.

[0186] Based on such first and second connectors 560 and 562, as Figure 35 As shown, an internal space Is is formed that passes through the center of the cross-section of the chain 510 and extends along the extension direction (Z-axis direction) of the chain 510. This internal space Is can be used for the installation of air pipes, power cables, etc.

[0187] It should be noted that the first and second joints, which can form an internal space extending along the extension direction of the chain, can be implemented in various shapes.

[0188] Figure 36 This is a perspective view showing another example of a joint. Furthermore, Figure 37 This is a three-dimensional diagram showing yet another example of a connector.

[0189] like Figure 36As shown, another example of the connector 660 includes a main body 660a and pin-shaped first and second link support portions 660b and 660c extending outward from the main body 660a in opposite directions. A through hole 660d is formed in the main body 660a, extending along the extension direction of the chain (Z-axis direction).

[0190] like Figure 37 As shown, another example of the connector 760 includes a main body 760a that is "U"-shaped when viewed in the extension direction (Z-axis direction) of the chain, and pin-shaped first and second link support portions 760b and 760c extending outward from the main body 760a in opposite directions. Side wall portions 760d and 760e of the main body 760a, which are spaced apart and provided with the first and second link support portions 760b and 760c respectively, are connected via a connecting member 760f. Furthermore, the connecting member 760 also serves to protect power cables and the like that passing through the main body 760a.

[0191] That is, the first and second joints only need to include a main body having a space extending through the chain in the extension direction (Z-axis direction), a link support portion connecting and supporting two consecutive first links, and a link support portion connecting and supporting two consecutive second links. It should be noted that, unlike the first and second joints, the first and second joints can be integrated with the first and second links.

[0192] Specifically, each of the first connecting rods has an inner portion disposed inside the other first connecting rod connected to one side, and an outer portion disposed outside the other first connecting rod connected to the other side. Similarly, each of the second connecting rods also has an inner portion disposed inside the other second connecting rod connected to one side, and an outer portion disposed outside the other second connecting rod connected to the other side. For example, through holes equivalent to bushings can be provided in the inner portions of the first and second connecting rods, and the connecting rod support portions of the first and second joints pass through the through holes and are integrally provided in the outer portions of the first and second connecting rods. That is, the connecting rod support portions of the first and second joints are rotatably supported in the through holes provided in the inner portions of the first and second connecting rods respectively, and are not rotatably supported in the outer portions of the first and second connecting rods respectively.

[0193] This embodiment 6, like the embodiment 1 described above, has a highly versatile structure in which the chain 510, which can be bent in multiple directions when viewed in the extension direction, can be used even without modification.

[0194] The above examples of embodiments 1 to 6 illustrate the chain of this disclosure. However, the chain of embodiments of this disclosure is not limited to the above-described embodiments 1 to 6.

[0195] For example, in the case of Embodiment 1 described above, as its first function, the first pin 60 connects two consecutive first connecting rods 20 so that they can rotate relative to each other about a first rotation center line C1, and connects two consecutive second connecting rods 30 so that they can rotate relative to each other about a third rotation center line C3. Furthermore, as its first function, the second pin 62 connects two consecutive first connecting rods 20 so that they can rotate relative to each other about a second rotation center line C2, and connects two consecutive second connecting rods 30 so that they can rotate relative to each other about a fourth rotation center line C4. On the other hand, as its second function, the first pin 60 and the second pin 62 respectively connect the first helical connecting rod connector 40 and the second helical connecting rod connector 50, that is, as... Figure 7 The diagram shows the corresponding first link 20 and second link 30 connected. However, the embodiments of this disclosure are not limited thereto.

[0196] For example, the first link may have a protrusion and a recess, and a first helical link connection is formed by rotatably engaging the protrusions and recesses of two consecutive first links. Similarly, the second link may have a protrusion and a recess, and a second helical link connection is formed by rotatably engaging the protrusions and recesses of two consecutive second links. In this case, the connection between the first and second helical link connections, that is, the connection between the corresponding first and second links, takes place in the portion other than the protrusions and recesses. For example, the portion between the protrusions and recesses in the first link and the portion between the protrusions and recesses in the corresponding second link can be connected by other components.

[0197] It should be noted that, in the case where the first and second connecting rods respectively have protrusions and recesses as described above, these protrusions can be connected to the connecting member. Specifically, in this case, the first and second connecting rods each have a protrusion and a through-hole-shaped recess through which the protrusion passes. The two ends of the connecting member are respectively connected to the front end of the protrusion of the first connecting rod that passes through the recess of an adjacent first connecting rod and the front end of the protrusion of the second connecting rod that passes through the recess of an adjacent second connecting rod.

[0198] It should be noted that, instead of the protrusions and recesses, the first link 20 can be rotatably connected to other first links 20 via a ball joint. Similarly, the second link 30 can also be rotatably connected to other second links 30 via a ball joint.

[0199] Furthermore, in the case of the above-described embodiment 1, for example... Figure 6As shown, the first rotation center line C1 and the second rotation center line C2 in the first link 20, and the third rotation center line C3 and the fourth rotation center line C4 in the second link 30, extend parallel to a plane (XY plane) orthogonal to the extension direction (Z-axis direction) of the chain 10. However, the embodiments of this disclosure are not limited to this. For example, the first and third rotation center lines C1 and C3 located on the same straight line may not be parallel to the plane orthogonal to the extension direction of the chain.

[0200] Furthermore, in the case of the above-described embodiment 1, such as Figure 4B and Figure 5B As shown, the first and second links 20 and 30 have an L-shaped form when viewed in the extending direction (Z-axis direction) of the chain 10. Furthermore, in the case of Embodiment 2 described above, as... Figure 18A and Figure 18B As shown, the first and second connecting rods 120 and 130 have an arc-shaped form. However, the shapes of the first and second connecting rods in the embodiments of this disclosure are not limited to this.

[0201] Alternatively, for example, the first and second links 20 and 30 in the chain 10 of Embodiment 1 can be combined with the first and second links 120 and 130 in the chain 110 of Embodiment 2 to form new chains of various variations.

[0202] Figure 38 It is a three-dimensional diagram of a part of a chain of changes. Furthermore, Figure 39 This is a three-dimensional diagram of part of a chain of changes in another example. Furthermore, Figure 40 This is a three-dimensional diagram of another example of a chain of changes.

[0203] Figure 38 The chain 810 shown in one example is a structure in which the chain 10 of Embodiment 1 and the chain 110 of Embodiment 2 are alternately connected. Therefore, the first helical link connector 840 is constructed by alternately connecting the first helical link connector 40 of Embodiment 1 and the first helical link connector 140 of Embodiment 2. Similarly, the second helical link connector 850 is constructed by alternately connecting the second helical link connector 50 of Embodiment 1 and the second helical link connector 150 of Embodiment 2.

[0204] Figure 39In another example, the chain 910 is configured such that, viewed in the extending direction (Z-axis direction) of the chain 910, the first and second links 20 and 30 of Embodiment 1 are located on one side in the width direction (X-axis direction) and one side in the thickness direction (Y-axis direction), while the first and second links 120 and 130 of Embodiment 2 are located on the other side in the width direction (X-axis direction) and the other side in the thickness direction (Y-axis direction). Therefore, the first helical link structure 940 is constructed by alternately connecting two of the first links 20 of Embodiment 1 and two of the second links 130 of Embodiment 2. Furthermore, the second helical link structure 950 is constructed by alternately connecting two of the second links 30 of Embodiment 1 and two of the second links 130 of Embodiment 2. Therefore, the first links 20 and 130 are in a corresponding relationship, and the first links 120 and 30 are in a corresponding relationship.

[0205] exist Figure 40 In another example of the modified chain 1010, the first helical connector 1040 is composed only of the first link 20 of Embodiment 1, and the second helical connector 1050 is composed only of the second link 130 of Embodiment 2. Therefore, the first link 20 and the second link 130 are in a corresponding relationship.

[0206] By combining the first and second links 20 and 30 of Embodiment 1 with the first and second links 120 and 130 of Embodiment 2 in various ways, chains of various variations can be made.

[0207] Furthermore, in the case of Embodiment 1 described above, rollers or similar options are not installed on the outer surfaces of the first and second links 20 and 30 of the chain 10. Also, the first and second pins 60 and 62 do not protrude significantly from the outer surfaces of the first and second links 60 and 62. When the chain 10 is used in a bent configuration as desired, rollers or similar options can be installed on the outer surfaces of the first and second links 20 and 30, as long as this bending is not affected, and the first and second pins 60 and 62 can also protrude significantly from the outer surfaces of the first and second links 20 and 30. The same applies to chains in other embodiments.

[0208] Furthermore, in the case of the above-described embodiment 1, such as Figure 11 As shown, chain 10 is used as a power transmission means. However, the embodiments of this disclosure are not limited to this. When the chain 510 of Embodiment 6 described above has an internal space extending in the chain's extension direction, the chain may be used as a cable veyor (registered trademark) instead of a power transmission means.

[0209] That is, the chain of the embodiments of this disclosure has, in a broad sense, a plurality of first links that are interconnected to form a first spiral link connection body that extends in a spiral shape; a plurality of second links that are interconnected to form a second spiral link connection body that extends in a spiral shape; and a plurality of connecting members that connect the first and second spiral link connection bodies by respectively connecting the corresponding first links and second links, forming a double spiral structure.

[0210] By appropriately combining any of the above embodiments and variations, their respective effects can be achieved.

[0211] This disclosure is fully described with reference to the accompanying drawings and in connection with preferred embodiments; however, various modifications and alterations will be apparent to those skilled in the art. Such modifications and alterations are to be understood as included therein, provided they do not depart from the scope of this disclosure based on the appended claims. Moreover, variations in the combination and order of elements in the various embodiments can be achieved without departing from the scope and spirit of this disclosure.

[0212] Industrial availability

[0213] This disclosure is applicable to chains used in a variety of applications.

[0214] Symbol Explanation

[0215] 10 chains

[0216] 20 First Link

[0217] 30 Second Link

[0218] 40 First helical connecting rod body

[0219] 50 Second helical connecting rod body

[0220] 60-link structural component (first pin)

[0221] 62-connector structural component (second pin)

Claims

1. A chain having: Multiple first links are interconnected to form a rotatable first helical link connection that extends in a helical shape; Multiple second links are interconnected to form a rotatable, spiral-extending second spiral link connection. and Multiple connecting components connect the first spiral connecting body and the second spiral connecting body by connecting the corresponding first connecting rod and the second connecting rod respectively, forming a double spiral structure.

2. The chain according to claim 1, wherein, The first link rotates relative to another first link connected to one side about a first rotation center line, and rotates relative to another first link connected to the other side about a second rotation center line extending in a direction different from the first rotation center line when viewed from the extension direction of the chain. The second link rotates relative to the other second link connected to one side about a third rotation center line, and rotates relative to the other second link connected to the other side about a fourth rotation center line that extends in a direction different from the third rotation center line when viewed from the extended direction. The connecting component connects the first helical connecting rod and the second helical connecting rod such that the first rotation center line of each of the first connecting rods and the third rotation center line of the corresponding second connecting rod are on the same straight line, and the second rotation center line of each of the first connecting rods and the fourth rotation center line of the corresponding second connecting rod are on the same straight line.

3. The chain according to claim 2, wherein, The chain has a first pin and a second pin as connecting components. The first pin connects two consecutive first connecting rods and supports them so that they can rotate relative to each other about the first rotation center line, and connects two consecutive second connecting rods and supports them so that they can rotate relative to each other about the third rotation center line. The second pin connects two consecutive first links and supports them so that they can rotate relative to each other about the second rotation center line, and connects two consecutive second links and supports them so that they can rotate relative to each other about the fourth rotation center line.

4. The chain according to claim 2, wherein, The chain has a first joint and a second joint as connecting components. The first joint includes: a first link support portion connecting two consecutive first links and supporting them so that they can rotate relative to each other about a first rotation center line; a second link support portion connecting two consecutive second links and supporting them so that they can rotate relative to each other about a third rotation center line; and a main body portion having a space extending through the chain along its extension direction. The second connector includes: a third link support portion that connects two consecutive first links and supports them so that they can rotate relative to each other about the second rotation center line; a fourth link support portion that connects two consecutive second links and supports them so that they can rotate relative to each other about the fourth rotation center line; and a main body portion having a space extending through the chain in the extension direction.

5. The chain according to claim 2, wherein, When viewed in the extended direction, the first rotation center line and the second rotation center line are orthogonal at an angle of 90 degrees.

6. The chain according to claim 2, wherein, When viewed in the extended direction, the first rotation center line intersects the second rotation center line at an angle of 60 degrees.

7. The chain according to claim 1, wherein, The first link and the second link have an L-shape when viewed in the extending direction of the chain, so that the outlines of the first spiral link connector and the second spiral link connector are rectangular when viewed in the extending direction of the chain.

8. The chain according to claim 1, wherein, The first link and the second link have an arc shape when viewed in the extension direction of the chain, so that the outlines of the first spiral link connector and the second spiral link connector are circular when viewed in the extension direction of the chain.

9. The chain according to claim 1, wherein, The first link and the second link have the same shape.

10. The chain according to claim 1, wherein, The first link is one of several different types of first links with different shapes. The second link is a variety of second links with different shapes.

11. The chain according to claim 10, wherein, The multiple types of first links and the multiple types of second links comprise links of the same shape.

Images