Chain light and assembly method thereof

Abstract

The present invention discloses a chain light and an assembly method thereof, and belongs to the field of lighting appliances. The chain light of the present invention is formed by a plurality of chain links that are mutually buckled; each chain link is formed by two identical ring-forming members that are connected together, the base of the ring-forming member is an annular structure, and a notch is provided on the annular structure; a cover body of the same shape is provided on the base, and the cover body is provided with an opening at a position corresponding to the notch; after the base and the cover body are connected, a cavity for accommodating a light source is formed; and the opening and the notch cooperate to form an installation opening, and when the chain links of the chain light are mutually buckled, a filling block is used to be detachably connected to the installation opening, thereby closing the installation opening to prevent the chain links from being separated from each other, so that the chain light of the present invention has a higher structural strength and a more convenient installation process.

Description

Technical Field

[0001] The present invention relates to the technical field of lighting appliances, and more particularly to a chain lamp and an assembling method thereof. Background Art

[0002] In some application scenarios, such as on the banks of rivers and lakes, or on the plank roads in the mountains, chains are usually set between the columns and railings for protection; in some style buildings or parks, chains are also used as decorations; these chains usually only have a protective or decorative function. However, at night or when the light is not good, the protective chains need to be used with warning lights to attract the attention of nearby people; decorative chains also need to be used with corresponding ambient lights to play a better decorative role.

[0003] In the prior art, a Chinese patent document with the authorization publication number CN2639680Y discloses a chain-type lighting device, which is formed by a plurality of chain links, wherein light bulbs and power-carrying wires are installed and arranged inside the chain links, and a wire threading port is provided on the chain link housing, wherein the chain link is formed by two detachable housings being embedded together, and each housing is provided with an installation seam; each housing can be opened at the installation seam to form a recoverable opening.

[0004] However, the chain lighting of the application has a mounting seam on the shell of the chain link. In order to increase the assembly speed, the mounting seam needs to be opened during the installation process, which makes it impossible to use a rigid material for the shell, so that the chain lighting of the application itself is not stable enough and cannot be used as a protective chain. Summary of the invention

[0005] 1. Technical problem to be solved by the invention

[0006] The purpose of the present invention is to overcome the shortcomings of the prior art that the chain lights themselves have low strength and a relatively complicated assembly process, and to provide a chain light and an assembly method thereof, aiming to improve the strength of the chain light itself while improving the convenience of assembly.

[0007] 2. Technical solution

[0008] In order to achieve the above object, the technical solution provided by the present invention is:

[0009] A chain light of the present invention is formed by a plurality of chain links that are mutually buckled; the chain links are formed by two identical ring-forming parts that are connected together, and the ring-forming parts include a base, a cover, a light source, and a filling block; the base is an annular structure, and a notch is provided on the annular structure; the cover has the same shape as the base, and an opening is provided on the cover at a position corresponding to the notch;

[0010] After the base and the cover are connected, a cavity for accommodating the light source is formed; and the opening and the notch cooperate to form an installation opening, and the filling block is detachably connected to the installation opening to close the installation opening.

[0011] Furthermore, the ring-forming member is in a waist-shaped shape, the waist-shaped shape has two parallel straight edges and two arc-shaped edges connecting the two straight edges, and the installation port is arranged on the straight edges of the waist-shaped shape.

[0012] Furthermore, a plurality of connecting parts are provided on the base, and the two ring-forming parts are connected through the cooperation of the connecting parts on their respective bases.

[0013] Furthermore, the connecting portion is arranged at a connecting position between the straight side and the arc-shaped side of the waist-shaped body.

[0014] Furthermore, in the ring-forming member, connecting parts are provided at the connecting positions of the straight side and the arcuate side of the waist-shaped member, and the connecting parts at both ends of the same arcuate side cooperate to form a locking structure.

[0015] Furthermore, the ring-forming member is provided with metal contacts for conducting electricity, and the metal contacts are located on the inner side of the arc-shaped edge of the waist-shaped circle.

[0016] Furthermore, in the same chain ring, the two ring-forming members are rotated 180° within the ring plane of the chain ring and are connected in abutment.

[0017] Furthermore, the cover body is provided with a limiting protrusion at the position of the opening, and the filling block is provided with a groove matched with the limiting protrusion.

[0018] Furthermore, the filling block is clamped in the installation opening of the chain ring.

[0019] A method for assembling the above-mentioned chain light, the assembly process of the Nth link of the chain light comprises:

[0020] Step 1: align the two ring-forming parts of the N-1th chain link, and align the installation openings of the two ring-forming parts of the N-1th chain link;

[0021] Step 2: Install the two ring-forming parts of the Nth chain ring into the N-1th chain ring from the installation openings of the N-1th chain ring respectively; then, align the two ring-forming parts of the Nth chain ring and align the installation openings of the two ring-forming parts of the Nth chain ring;

[0022] Step 3: Install the two ring-forming parts of the N+1th chain ring into the center of the Nth chain ring from the installation opening of the Nth chain ring;

[0023] Step 4: Fix and connect the two ring-forming parts of the Nth chain link, and use a filling block to close the installation opening of the Nth chain link.

[0024] Furthermore, in the step four, the two ring-forming parts of the Nth chain link are first rotated 180° within the ring plane of the Nth chain link, and then the two ring-forming parts of the Nth chain link are fixedly connected.

[0025] 3. Beneficial effects

[0026] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0027] (1) The chain light of the present invention is formed by a plurality of chain links interlocked with each other; each chain link is formed by two identical ring-forming parts connected together, the base of the ring-forming part is a ring-shaped structure, and a notch is provided on the ring-shaped structure; a cover body of the same shape is provided on the base, and the cover body is provided with an opening at a position corresponding to the notch; after the base and the cover body are connected, a cavity for accommodating the light source is formed; and the opening and the notch cooperate to form an installation opening, and when the chain links of the chain light are interlocked with each other, a filling block is used to be detachably connected to the installation opening, thereby closing the installation opening to prevent the chain links from detaching from each other, so that the chain light of the present invention has a higher structural strength and a more convenient installation process.

[0028] (2) In the ring-forming component, connecting parts are provided at the connecting positions of the straight edge and the arc-shaped edge of the waist-shaped member, and the connecting parts at both ends of the same arc-shaped edge cooperate to form a locking structure, so that adjacent chain links can be locked in the locking structure, limiting the relative movement of adjacent chain links, thereby preventing damage to the wires due to excessive pulling.

[0029] (3) In the same chain link, the two ring-forming parts are rotated 180° within the ring plane of the chain link and connected together, so that the installation opening of the ring-forming part will be closed by the installation opening of the other ring-forming part, thereby preventing the chain link adjacent to the chain link from detaching from the chain link from the installation opening, thereby improving the overall strength of the chain light. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of the chain light of the present invention;

[0031] Figure 2 It is a schematic diagram of the structure of the chain ring in the present invention;

[0032] Figure 3 It is a schematic diagram of the matching mode between the filling block and the mounting opening in the present invention;

[0033] Figure 4 It is a schematic diagram of the ring-forming member in the present invention being installed into the chain ring through the installation opening;

[0034] Figure 5 It is a structural schematic diagram of the upper ring member in the present invention;

[0035] Figure 6It is a schematic diagram of the chain light assembly method of the present invention. DETAILED DESCRIPTION

[0036] In order to further understand the content of the present invention, the present invention is described in detail in conjunction with the accompanying drawings and embodiments.

[0037] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical content disclosed by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and so on quoted in this specification are only for the convenience of description, and are not used to limit the scope of implementation. The change or adjustment of their relative relationship should also be regarded as the scope of implementation of the present invention without substantially changing the technical content.

[0038] Reference Figure 1 This embodiment provides a chain light, which can be formed by a plurality of chain links 300 that are interlocked, and a light-emitting portion is provided on the chain link 300, so that the chain light of the present invention has lighting, decoration and protection functions.

[0039] Specifically, the chain link 300 can be formed by two identical ring-forming parts being matched and connected. The ring-forming part can include a base, a cover, a light source and a filling block. The base and the cover can be matched and connected to form the outer shell of the ring-forming part, the light source can be arranged on the base and accommodated in the cavity formed after the base and the cover are connected, and the cover is at least partially made of a light-transmitting material, so that the light emitted by the light source in the cavity can pass through the outer shell of the ring-forming part from the light-transmitting part to achieve lighting.

[0040] The base of the ring-forming member may be an annular structure, and a notch may be provided on the annular structure; meanwhile, the shape of the cover body may be the same as that of the base, and the cover body may be provided with an opening at a position corresponding to the notch. After the base and the cover body are connected, the notch on the base and the opening of the cover body together form an installation opening, and the ring-forming member of the adjacent chain link may be buckled into the ring-forming member from the installation opening of the ring-forming member. When the ring-forming member of the adjacent chain link is buckled in, a filling block may be detachably connected to the installation opening, thereby closing the installation opening to prevent the adjacent chain link from detaching from the chain link.

[0041] In order to facilitate the installation and fixation of the filling block, a limiting protrusion can be provided at the position of the opening of the cover body, and a groove matching the limiting protrusion can be provided on the filling block; or a limiting protrusion can be provided on the filling block, and a groove matching the limiting protrusion can be provided at the position of the opening of the cover body. When the filling block is detachably connected to the installation opening of the ring-forming member, the matching of the limiting protrusion and the groove can be used to position the filling block, and the filling block can be conveniently installed and fixed in the installation opening.

[0042] The filling block and the mounting opening can be directly snap-fitted, that is, the filling block and the mounting opening can be matched with each other, and the size of the filling block can be slightly larger than the mounting opening. When the filling block is inserted into the mounting opening, the filling block and the mounting opening are clamped together to form a snap-fit ​​similar to an interference fit.

[0043] More specifically, see Figure 2 and Figure 3 , the two identical ring-forming parts are an upper ring-forming part 100 and a lower ring-forming part 200. Among them, the upper ring-forming part 100 includes an upper shell cover 110, an upper shell light source 120, an upper shell base 130 and an upper shell filling block 140. The upper shell cover 110 and the upper shell base 130 are connected to form the shell of the upper ring-forming part 100, the upper shell light source 120 is accommodated in the cavity formed by the upper shell cover 110 and the upper shell base 130, and the upper shell filling block 140 is used to connect to the installation port of the upper ring-forming part 100 to close the installation port of the upper ring-forming part 100; the lower shell cover 210 and the lower shell base 230 are connected to form the shell of the upper ring-forming part 200, the lower shell light source is accommodated in the cavity formed by the lower shell cover 210 and the lower shell base 230, and the lower shell filling block 240 is used to connect to the installation port of the upper ring-forming part 200 to close the installation port of the upper ring-forming part 200.

[0044] In this embodiment, since the structures of the two loop-forming components constituting the same chain link 300 can be the same, when describing the structure of the loop-forming components, only the structure of the upper loop-forming component 100 is described as an example, and the structure of the lower loop-forming component 200 can refer to the upper loop-forming component 100.

[0045] Reference Figure 4 In the upper ring member 100, the upper shell base 130 may be an annular structure, and a notch 134 is provided on the annular structure; the upper shell cover 110 may also be an annular structure, and has the same shape as the upper shell base 130, and the upper shell cover 110 may be provided with an opening 111 at a position corresponding to the notch 134. When the upper shell cover 110 is connected to the upper shell base 130, the notch 134 cooperates with the opening 111 to form an installation opening, and the upper shell filling block 140 is used to close the installation opening of the upper ring member 100.

[0046] Taking the upper ring member 100 as an example, the upper shell cover 110 can be provided with a limiting protrusion 112 at the opening, and a groove is provided on the upper shell filling block 140. When the upper shell filling block 140 is connected to the upper ring member 100, the mutual cooperation between the limiting protrusion 112 and the groove can be utilized to facilitate the positioning, installation and fixing of the upper shell filling block 140.

[0047] As a further optimization, the shape of the upper ring member 100 can be specifically a waist-shaped round shape, and the waist-shaped round shape specifically includes two straight edges parallel to each other, and arc-shaped edges at both ends for connecting the two straight edges, and the arc-shaped edges can specifically be semicircular. When the shape of the upper ring member 100 is a waist-shaped round shape, the shape of the chain link 300 is also correspondingly a waist-shaped round shape, so after the chain light of this embodiment is installed, in most cases, adjacent chain links 300 are always in contact at the position of the arc-shaped edges. Therefore, in order to improve the stability of the overall structure of the chain light, the installation port of the upper ring member 100 can be set on the straight edge of the waist-shaped round shape, so that after the chain light is installed, the adjacent chain links 300 will not be in contact at the position of the installation port.

[0048] As a certain embodiment of the connection method between the upper ring-forming member 100 and the lower ring-forming member 200, an upper shell connecting portion 131 may be provided on the upper shell base 130 of the upper ring-forming member 100, and a lower shell connecting portion 231 may be provided on the lower shell base 230 of the lower ring-forming member 200 at a position corresponding to the upper shell connecting portion 131. However, after the upper ring-forming member 100 and the lower ring-forming member 200 are aligned, the connection can be achieved by using the lower shell connecting portion 231 on the lower shell base 230 to cooperate with the upper shell connecting portion 131 on the upper shell base 130. For example, the upper shell connecting bolt 132 is screwed into the upper shell connecting portion 131, and is connected to the lower shell connecting portion 231 through the upper shell connecting portion 131; or the lower shell connecting bolt 232 is screwed into the lower shell connecting portion 231, and is connected to the upper shell connecting portion 131 through the lower shell connecting portion 231.

[0049] As a further optimization of this embodiment, the upper shell connection part 131 can be set at the connection position of the straight side and the arc side of the waisted round shape of the upper ring-forming member 100, and the lower shell connection part 231 can be set at the connection position of the straight side and the arc side of the waisted round shape of the lower ring-forming member 200. This can ensure that after the upper ring-forming member 100 and the lower ring-forming member 200 are matched, the position of the upper shell connection part 131 and the lower shell connection part 231 can correspond.

[0050] Further optimization is performed, the upper shell base 130 is provided with an upper shell connection part 131 at the connection position of the straight side and the arc side in its waist round shape; at the same time, the lower shell base 230 is provided with a lower shell connection part 231 at the connection position of the straight side and the arc side in its waist round shape. Therefore, when the upper ring-forming member 100 and the lower ring-forming member 200 are aligned in the forward direction or in the reverse direction, the positions of the upper shell connection part 131 and the lower shell connection part 231 can always correspond.

[0051] Among them, the positive alignment of the upper ring-forming component 100 and the lower ring-forming component 200 means that after the upper ring-forming component 100 and the lower ring-forming component 200 are aligned and connected, the installation port of the upper ring-forming component 100 corresponds to the installation port position of the lower ring-forming component 200, and forms an assembly port 310; the reverse alignment of the upper ring-forming component 100 and the lower ring-forming component 200 means that after the upper ring-forming component 100 and the lower ring-forming component 200 are positively aligned, the upper ring-forming component 100 is rotated 180° relative to the lower ring-forming component 200 in the ring plane of the chain link 300, so that the installation port of the upper ring-forming component 100 and the installation port of the lower ring-forming component 200 are staggered.

[0052] When the upper ring-forming member 100 and the lower ring-forming member 200 are aligned and connected in opposite directions, that is, in the same chain link, the two ring-forming members are rotated 180° within the ring plane of the chain link and aligned and connected, since the installation opening of the upper ring-forming member 100 and the installation opening of the lower ring-forming member 200 are staggered, the straight edge of the upper ring-forming member 100 can close the installation opening of the lower ring-forming member 200, and the straight edge of the lower ring-forming member 200 can close the installation opening of the upper ring-forming member 100, thereby preventing adjacent chain links from detaching and improving the overall stability of the chain light.

[0053] In addition, since connecting parts are provided at the connecting positions of the straight edges and the arcuate edges in the waist-shaped shape, in the chain ring, the connecting parts located at both ends of the same arcuate edge cooperate with each other to form a locking structure, thereby clamping the adjacent chain rings between the arcuate edge and the connecting parts at both ends of the arcuate edge.

[0054] For example, in the upper ring-forming component 100, the upper shell base 130 is provided with an upper shell connection part 131 at the connection position of the straight side and the arc-shaped side of the waist-shaped circle; in the lower ring-forming component 200, the lower shell base 230 is provided with a lower shell connection part 231 at the connection position of the straight side and the arc-shaped side of the waist-shaped circle; after the upper ring-forming component 100 and the lower ring-forming component 200 are positively matched, the upper shell connection part 131 and the lower shell connection part 231 cooperate with each other to form four connection structures in parallel, and the four connection structures are formed into a locking structure in pairs, and the locking structure cooperates with the closer arc-shaped side to clamp the adjacent chain link 300.

[0055] In this embodiment, the light source in the loop member can be connected to the power source outside the chain light by a wiring harness, so as to realize power supply. Taking the loop member 100 as an example, a threading hole can be opened on the base, and the threading hole can be opened on the inner side of the arc edge. When the chain light is installed, the wiring harness can enter the cavity between the upper shell cover 110 and the upper shell base 130 from the threading hole at one end of the upper loop member 100, and be electrically connected to the light source, and then pass through the threading hole at the other end of the upper loop member 100; and enter through the threading hole of the upper loop member 100 of the next chain link, and then complete the power supply of the light source of the entire chain light.

[0056] In addition, refer to Figure 4 Taking the upper loop member 100 as an example, the threading hole 133 can also be set on the outside of the arc-shaped edge. When the wire harness passes from the upper loop member 100 of one chain ring 300 to the upper loop member 100 of another chain ring 300, it needs to be wrapped around the chain ring 300.

[0057] As another embodiment of the power supply method for the light source in the ring-forming member, metal contacts may be provided on the ring-forming member, and power supply is achieved through the contact of the metal contacts on adjacent chain links 300 .

[0058] Specifically, taking the upper ring member 100 as an example, an upper shell metal contact 150 can be set on the inner side of the arc edge of the upper shell cover 110. When the chain light is installed, the upper ring members 100 of two adjacent chain links 300 are in contact at the inner side of the arc edge, so that the upper shell metal contacts 150 of the two upper ring members 100 are electrically connected to realize power supply. Similarly, a lower shell metal contact 250 can also be set on the inner side of the arc edge of the lower ring member 200.

[0059] In order to realize the metal contact electrical connection mode to realize power supply, after the chain light is installed, it is necessary to ensure that the upper ring-forming members 100 of two adjacent chain links 300 are always in contact at the inner side of the arc edge. Therefore, the connecting parts on the ring-forming members can be used to cooperate with each other to clamp the arcs of adjacent chain links 300 in the clamping structure, so that the adjacent chain links 300 are always in contact at the inner side of the arc edge.

[0060] The following is a method for assembling the chain lights of this embodiment. Figure 5 and Figure 6 The assembly method for the Nth chain ring 300 may specifically include the following steps:

[0061] Step 1: align the two loop-forming parts of the N-1th link 300, and align the installation openings of the two loop-forming parts of the N-1th link; specifically, align the upper loop-forming part 100 and the lower loop-forming part 200 of the N-1th link 300, and align the installation opening of the upper loop-forming part 100 and the installation opening of the lower loop-forming part 200 of the N-1th link 300, that is, align the upper loop-forming part 100 and the lower loop-forming part 200 positively, so that the installation opening of the upper loop-forming part 100 and the installation opening of the lower loop-forming part 200 form an assembly opening. Wherein, N is a positive integer greater than 1, such as 2, 3, 4, 5.

[0062] Step 2: Install the two ring-forming components of the Nth chain ring into the N-1th chain ring from the installation port of the N-1th chain ring respectively; specifically, buckle the upper ring-forming component 100 and the lower ring-forming component 200 of the Nth chain ring into the N-1th chain ring 300 from the assembly port.

[0063] Afterwards, align the two ring-forming parts of the Nth chain ring, and align the installation ports of the two ring-forming parts of the Nth chain ring; specifically, align the upper ring-forming part 100 and the lower ring-forming part 200 of the Nth chain ring in a positive direction so that the installation port of the upper ring-forming part 100 and the installation port of the lower ring-forming part 200 form an assembly port.

[0064] Step three, respectively install the two ring-forming components of the N+1th chain ring from the installation opening of the Nth chain ring into the Nth chain ring; specifically, buckle the upper ring-forming component 100 and the lower ring-forming component 200 of the N+1th chain ring into the Nth chain ring 300 from the assembly opening.

[0065] Step 4: Fix and connect the two ring-forming parts of the Nth chain ring; specifically, use the connecting bolts to cooperate with the connecting parts on the upper ring-forming part 100 and the lower ring-forming part 200 to complete the connection. Afterwards, use the filling block to close the installation opening of the Nth chain ring; specifically, use the upper shell filling block 140 to close the installation opening of the upper ring-forming part 100, and use the lower shell filling block 240 to close the installation opening of the lower ring-forming part 200.

[0066] As a further optimization of the assembly method of this embodiment, in step 4, the two ring-forming members of the Nth chain ring can be rotated 180° in the ring plane of the Nth chain ring, and then the two ring-forming members of the Nth chain ring can be fixedly connected. That is, the Nth chain ring can be reversely matched and then connected, so that the straight edge of the upper ring-forming member 100 can be used to close the installation opening of the lower ring-forming member 200, and the straight edge of the lower ring-forming member 200 can be used to close the installation opening of the upper ring-forming member 100, thereby improving the overall stability and structural strength of the chain light.

[0067] The present invention and its embodiments are described schematically above, and the description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by it and designs a structural method and an embodiment similar to the technical solution without creativity without departing from the purpose of the invention, they shall all fall within the protection scope of the present invention.

Claims

1. A chain light, formed by a plurality of chain links interlocked with each other; characterized in that: The chain ring is formed by two identical ring-forming parts connected together, and the ring-forming parts include a base, a cover, a light source and a filling block; the base is a ring-shaped structure, and a notch is opened on the ring structure; The cover body has the same shape as the base, and an opening is provided on the cover body at a position corresponding to the notch; the cover body is at least partially made of a light-transmitting material; After the base and the cover are connected, a cavity for accommodating the light source is formed; and the opening and the notch cooperate to form a mounting opening, and the filling block is detachably connected to the mounting opening to close the mounting opening; In the same chain ring, the two ring-forming parts are rotated 180° in the ring plane of the chain ring and connected in abutment.

2. A chain light according to claim 1, characterized in that: The ring-forming member is in a waist-shaped shape, and the waist-shaped shape has two parallel straight edges and two arc-shaped edges connecting the two straight edges, and the installation port is arranged on the straight edges of the waist-shaped shape.

3. A chain light according to claim 2, characterized in that: The base is provided with a plurality of connecting parts, and the two ring-forming parts are connected through the cooperation of the connecting parts on the respective bases.

4. A chain light according to claim 3, characterized in that: The connecting portion is arranged at a connecting position between the straight side and the arc-shaped side of the oval shape.

5. A chain light according to claim 4, characterized in that: In the ring-forming member, connecting parts are provided at the connecting positions of the straight side and the arc-shaped side of the waist-shaped member, and the connecting parts at both ends of the same arc-shaped side cooperate to form a locking structure.

6. A chain light according to claim 5, characterized in that: The ring-forming member is provided with metal contacts for conducting electricity, and the metal contacts are located on the inner side of the arc-shaped edge of the waist-shaped circle.

7. A chain light according to any one of claims 1 to 6, characterized in that: The cover body is provided with a limiting protrusion at the position of the opening, and the filling block is provided with a groove matched with the limiting protrusion.

8. The chain light according to claim 7, characterized in that: The filling block is clamped in the installation opening of the chain ring.

9. A method for assembling the chain light according to any one of claims 1 to 8, characterized in that: The assembly process of the Nth link of the chain light includes: Step 1: align the two ring-forming parts of the N-1th chain link, and align the installation openings of the two ring-forming parts of the N-1th chain link; Step 2: Install the two ring-forming parts of the Nth chain ring into the N-1th chain ring from the installation openings of the N-1th chain ring respectively; then, align the two ring-forming parts of the Nth chain ring and align the installation openings of the two ring-forming parts of the Nth chain ring; Step 3: Install the two ring-forming parts of the N+1th chain ring into the center of the Nth chain ring from the installation opening of the Nth chain ring; Step 4: fix and connect the two ring-forming parts of the Nth chain link, and close the installation opening of the Nth chain link with a filling block; Wherein, N is a positive integer greater than 1.

10. The method according to claim 9, characterized in that: In the step 4, the two ring-forming parts of the Nth chain link are first rotated 180° within the ring plane of the Nth chain link, and then the two ring-forming parts of the Nth chain link are fixedly connected.

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