Drag chain link plate connecting structure

Abstract

The utility model provides a drag chain link plate connecting structure, and belongs to the field of drag chain structure design. The chain link comprises a chain link plate and a buckle, a first connecting plate and a second connecting plate are arranged at the two opposite ends of each chain link plate correspondingly, and the first connecting plate on one chain link plate in every two adjacent chain link plates is in lap joint with the outer side of the second connecting plate on the other chain link plate and is hinged to the second connecting plate through a buckle. A first connecting hole is formed in the first connecting plate, a second connecting hole is formed in the second connecting plate, a limiting hanging table is arranged on the side wall of the second connecting hole, and a clamping position is arranged on the inner side of the limiting hanging table; the buckle comprises a shaft body and a blocking edge, a clamping block is arranged on the side face of the inner end of the shaft body, and a screwing groove is formed in the buckle. After the inner end of the shaft body penetrates into the first connecting hole and the second connecting hole, the buckle is rotated, so that the clamping block is hooked on the limiting hanging table and clamped with the clamping position, and the inner side of the blocking edge is blocked on the first connecting plate. The chain link plates are reasonable in structural design, convenient to assemble and disassemble, and good in practicability.

Description

Technical Field

[0001] The utility model relates to the field of drag chain structure design, in particular to a drag chain link plate connection structure. Background Art

[0002] Drag chains are widely used in a variety of applications, including CNC machine tools, injection molding machines, lifting and transportation equipment, and automated warehouses. They are suitable for applications involving reciprocating motion and can provide traction and protection for internal pipelines. Drag chains typically consist of multiple hinged links. Each link includes two opposing, spaced-apart link plates, an upper cover connecting the two link plates, and a hollow frame-like structure formed between the upper and lower covers and the two link plates. In some existing drag chains, the link plates on the same side of two adjacent links are hinged together using rivets. This connection method is not only cumbersome to assemble but also difficult to disassemble, causing significant inconvenience in practical applications. Utility Model Content

[0003] To this end, the utility model provides a drag chain link plate connection structure that is convenient for disassembly and assembly.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] The utility model provides a tow chain link plate connection structure, comprising a link plate and a buckle; the opposite ends of the link plate are respectively a first connecting plate and a second connecting plate, the first connecting plate on one of the two adjacent link plates overlaps the outer side of the second connecting plate on the other link plate and is hinged through the buckle;

[0006] The first connecting plate is provided with a first connecting hole, the second connecting plate is provided with a second connecting hole at a position opposite to the first connecting hole, a limiting hanging platform is provided on the side wall of the second connecting hole, and a locking position is provided on the inner side of the limiting hanging platform;

[0007] The buckle includes a shaft body and a stop edge provided at the outer end of the shaft body and protruding radially outward, a radially protruding block is provided on the side surface of the inner end of the shaft body, and a screw groove with an outer end opening is provided on the buckle; after the inner end of the shaft body is inserted into the first connecting hole and the second connecting hole, the buckle is rotated so that the block is hooked on the inner side of the limit hanging platform and forms a clamping connection with the clamping position, and the inner side of the stop edge is stopped on the first connecting plate.

[0008] In some embodiments, the second connecting hole includes a circular hole portion for the inner end of the shaft to pass through and a side hole portion for the blocking block to pass through. The side hole portion is arranged at the edge of the circular hole portion and is connected to each other. The limiting hanging platform is adjacent to the side hole portion, and the inner diameter of the circular hole portion matches the outer diameter of the shaft.

[0009] In some embodiments, a recessed groove suitable for embedding the retaining edge is provided on the outer surface of the first connecting plate, the retaining edge is embedded in the recessed groove, the recessed groove is a circular groove, the retaining edge is circular, and the inner diameter of the recessed groove matches the outer diameter of the retaining edge.

[0010] In some embodiments, a limiting rib is provided on the inner side of the limiting hanging platform, and the clamping block is stopped at the limiting rib when the clamping block is engaged with the clamping position.

[0011] In some embodiments, a circular groove concentric with the first connecting hole is provided on the inner side of the first connecting plate, and a frustum protruding outward is provided on the second connecting plate. The frustum is inserted into the circular groove, and the outer diameter of the frustum matches the inner diameter of the circular groove.

[0012] In some embodiments, an angle limit block is provided on the inner side of the first connecting plate, and an angle limit groove is provided on the outer side of the second connecting plate. When the two connected chain link plates are connected, the angle limit block is located in the angle limit groove, and both ends of the angle limit groove form a retaining edge to resist and limit the angle limit block.

[0013] In some embodiments, the card block has a card protrusion or a card slot, and the card position is correspondingly configured as the card slot or the card protrusion.

[0014] In some embodiments, the screw groove is a cross groove, a straight groove or a polygonal groove.

[0015] The utility model has the positive effects that the utility model optimizes the connection structure of the link plates of the drag chain, so that the connection and separation operations between the link plates are convenient, and the utility model has good practicality and operability.

[0016] The specific operation method during assembly is as follows: During assembly, first overlap the first connecting plate on one link plate with the second connecting plate on the other link plate so that the first connecting hole is aligned with the second connecting hole, and then install the buckle: After the inner end of the shaft body is passed through the first connecting hole and the second connecting hole, insert the tip of the screwdriver into the screwing groove and rotate the buckle so that the card block is hooked on the limit hanging platform and the card block and the card position are connected, thereby locking the buckle to prevent the buckle from rotating relative to the second connecting plate, which can ensure that the card block and the limit hanging platform are reliably hung, so that the buckle cannot be detached from the first connecting hole and the second connecting hole, thereby ensuring the reliability of the connection between the link plates. When the link plates need to be disassembled, insert the tip of the screwdriver into the screwing groove again and rotate the buckle in the opposite direction to separate the card block from the card position and the limit hanging platform, and then the two connected link plates can be disassembled. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a schematic diagram of the link plate connection structure of the drag chain in the present invention;

[0019] Figure 2 for Figure 1 Schematic diagram of the drag chain link plate connection structure from another perspective shown in ;

[0020] Figure 3 This is an exploded view of the link plate connection structure of the drag chain in the utility model;

[0021] Figure 4 This is another exploded view of the link plate connection structure of the drag chain in the present invention;

[0022] Figure 5 This is a side view of the link plate connection structure of the drag chain in the utility model;

[0023] Figure 6 For the Figure 5 Sectional view taken along line AA;

[0024] Figure 7 This is a schematic diagram of the buckle in the present utility model;

[0025] Figure 8 Schematic diagram of the structures of eight buckles provided in the utility model.

[0026] Reference numerals shown in the figure: 1-link plate; 11-first connecting plate; 111-first connecting hole; 112-sunk groove; 113-circular groove; 114-angle limit block; 12-second connecting plate; 121-second connecting hole; 1211-circular hole portion; 1212-side hole portion; 122-limit hanging platform; 123-locking position; 124-circular platform; 125-angle limiting groove; 126-limiting retaining edge; 127-retaining edge; 2-buckle; 21-shaft body; 22-retaining edge; 23-block; 24-screwing groove. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly. In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixed", etc. should be understood in a broad sense. For example, "fixed" can be a fixed connection, a detachable connection, or an integral whole; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0029] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0030] This embodiment optimizes the hinge structure between the link plates 1 on the same side of two adjacent links in the drag chain: the link plate connection structure of the drag chain is as follows: Figures 1 to 8 As shown, it includes a link plate 1 and a buckle 2; the opposite ends of the link plate 1 are respectively a first connecting plate 11 and a second connecting plate 12, and the first connecting plate 11 on one of the two adjacent link plates 1 is overlapped with the outer side of the second connecting plate 12 on the other link plate 1 and is hinged through the buckle 2, so that the two connected link plates 1 can rotate relative to each other to adapt to the bending movement when the drag chain is used.

[0031] See Figures 1 to 4 As shown, the first connecting plate 11 is provided with a first connecting hole 111, and the first connecting hole 111 is arranged along the inner and outer directions ( Figure 1The direction indicated by the middle arrow is the inward and outward direction) passes through the first connecting plate 11, and a second connecting hole 121 is provided on the second connecting plate 12 at a position opposite to the first connecting hole 111. The second connecting hole 121 passes through the second connecting plate 12 along the inward and outward direction. A limit hanging platform 122 is provided on the side wall of the second connecting hole 121, and a clamping position 123 is provided on the inner side of the limit hanging platform 122; the buckle 2 includes a shaft body 21 and a stopper edge 22 provided at the outer end of the shaft body 21 and protruding radially outwardly, and the inner end side of the shaft body 21 is provided with a radially protruding The clamping block 23 is provided with a screwing groove 24 with an outer end opening on the buckle 2. The screwing groove 24 can be set as a non-circular groove such as a cross groove, a straight groove, a polygonal groove, etc. The outer end of the screwing groove 24 is for the tip of a screwdriver to be inserted to facilitate the rotation of the buckle 2; after the inner end of the shaft body 21 is inserted into the first connecting hole 111 and the second connecting hole 121, the buckle 2 is rotated so that the clamping block 23 is hooked on the inner side of the limit hanging platform 122 and forms a clamping connection with the clamping position 123, and the inner side of the stop edge 22 is stopped on the first connecting plate 11 to form a limit.

[0032] With the above structure of this embodiment, when assembling, first overlap the first connecting plate 11 on one link plate 1 with the second connecting plate 12 on the other link plate 1 so that the first connecting hole 111 is aligned with the second connecting hole 121, and then install the buckle 2: after the inner end of the shaft body 21 is inserted into the first connecting hole 111 and the second connecting hole 121, the tip of the screwdriver is inserted into the screwing groove 24 and the buckle 2 is rotated so that the clamping block 23 is hooked on the limit hanging platform 122 and the clamping block 23 is connected with the clamping position 124, thereby locking the buckle 2 to prevent the buckle 2 from being relative to the second link The rotation of the connecting plate 12 can ensure that the block 23 is reliably connected to the limit hanging platform 122, so that the buckle 2 cannot be detached from the first connecting hole 111 and the second connecting hole 121, thereby ensuring the reliability of the connection between the chain link plates 1. When the chain link plates 1 need to be disassembled, the tip of the screwdriver is inserted into the screw groove 24 again and the buckle 2 is rotated in the opposite direction to separate the block 23 from the clamping position 124 and the limit hanging platform 122, and then the two connected chain link plates can be disassembled. The structure in this embodiment makes the connection and disassembly operations between the chain link plates 1 convenient, and has good practicality and operability.

[0033] like Figure 6 and Figure 7 As shown, in this embodiment, the card block 23 has a card slot, and the card position 123 is correspondingly set as a card protrusion. When the buckle 2 is installed in place, the card slot and the card protrusion are reliably engaged; as a modified implementation scheme, in actual operation, a card protrusion can also be set on the card block 23, and the card position 123 is correspondingly set as a card slot.

[0034] like Figures 2 to 4As shown, the second connecting hole 121 includes a circular hole portion 1211 for the inner end of the shaft body 21 to pass through and a side hole portion 1212 for the blocking block 23 to pass through. The side hole portion 1212 is arranged at the edge of the circular hole portion 1211 and is connected. The limiting hanging platform 122 is adjacent to the side hole portion 1212. When the inner end of the buckle 2 passes through the second connecting hole 12, the shaft body 21 passes through the circular hole portion 1211 and the blocking block 23 passes through the side hole portion 1212. By rotating the buckle 2, the blocking block 23 is misaligned with the side hole portion 1212 and is hooked on the limiting hanging platform 122. The inner diameter of the circular hole portion 1211 matches the outer diameter of the shaft body 21, so that the shaft body 21 and the second connecting hole 121 have good concentricity, ensuring an effective and stable connection.

[0035] like Figure 1 and Figure 4 As shown, a recessed groove 112 suitable for embedding the retaining edge 22 is provided on the outer surface of the first connecting plate 11, and the retaining edge 22 is embedded in the recessed groove 112, thereby preventing the retaining edge 22 from completely protruding from the outer surface of the first connecting plate 11, thereby making the outer side of the drag chain relatively flat; the recessed groove 112 is a circular groove, the retaining edge 22 is circular, and the inner diameter of the recessed groove 112 matches the outer diameter of the retaining edge 22. The outer edge of the retaining edge 22 cooperates with the inner edge of the recessed groove 112 to enable the buckle 2 to play a limiting role, so as to ensure that the buckle 2 and the first connecting hole 111 have good concentricity.

[0036] like Figure 2 As shown, in some embodiments, a limiting rib 126 is provided on the inner side of the limiting hanging platform 122, and the clamping block 23 is stopped at the limiting rib 126 when it is clamped with the clamping position 123. During assembly, when the buckle 2 is rotated to clamp the clamping block 23 with the clamping position 123, the clamping block 23 just abuts against the limiting rib 126, thereby stopping and limiting the buckle 2, preventing the buckle 2 from excessive rotation and affecting the fit between the clamping block 23 and the clamping position 123.

[0037] Combine Figure 3 、 Figure 4 and Figure 6 As shown, in some embodiments, a circular groove 113 concentric with the first connecting hole 111 is provided on the inner side of the first connecting plate 11, and the second connecting plate 12 is provided with an outwardly protruding cone 124, which is inserted into the circular groove 113. The outer diameter of the cone 124 matches the inner diameter of the circular groove 113, and the concentricity of the connection between the first connecting plate 11 and the second connecting plate 12 is ensured by the cooperation between the cone 124 and the circular groove 113.

[0038] like Figure 3 、 Figure 4 and Figure 6As shown, in order to limit the movable angle between the two chain link plates 1, an angle limit block 114 is provided on the inner side of the first connecting plate 11, and an angle limit groove 125 is provided on the outer side of the second connecting plate 12. When the two connected chain link plates 1 are connected, the angle limit block 114 is in the angle limit groove 125, and the two ends of the angle limit groove 125 form a rib 127 for resisting and limiting the angle limit block 114. When the two chain link plates 1 rotate relative to each other, the angle limit block 114 moves in the angle limit groove 125. When the two chain link plates 1 rotate to the maximum angle and the minimum angle, the angle limit block 114 respectively abuts against the ribs 127 at the two ends of the angle limit groove 125, thereby achieving the purpose of angle limiting.

[0039] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A drag chain link plate connection structure, comprising a link plate (1) and a buckle (2); the two opposite ends of the link plate (1) are respectively a first connection plate (11) and a second connection plate (12); the first connection plate (11) on one of the two adjacent link plates (1) is overlapped on the outer side of the second connection plate (12) on the other link plate (1) and is hinged through the buckle (2); It is characterized in that The first connecting plate (11) is provided with a first connecting hole (111), the second connecting plate (12) is provided with a second connecting hole (121) at a position opposite to the first connecting hole (111), a limiting hanging platform (122) is provided on a side wall of the second connecting hole (121), and a locking position (123) is provided on the inner side of the limiting hanging platform (122); The buckle (2) comprises a shaft body (21) and a stopper edge (22) which is arranged at the outer end of the shaft body (21) and protrudes radially outwards; a block (23) which protrudes radially is arranged on the inner end side surface of the shaft body (21); and a screwing groove (24) which is open at the outer end is arranged on the buckle (2); after the inner end of the shaft body (21) is inserted into the first connecting hole (111) and the second connecting hole (121), the buckle (2) is rotated so that the block (23) is hooked on the inner side of the limit hanging platform (122) and forms a clamping connection with the clamping position (123), and the inner side of the stopper edge (22) is stopped on the first connecting plate (11).

2. The drag chain link plate connection structure according to claim 1, characterized in that: The second connecting hole (121) comprises a circular hole portion (1211) for the inner end of the shaft body (21) to pass through, and a side hole portion (1212) for the block (23) to pass through, the side hole portion (1212) is arranged at the edge of the circular hole portion (1211) and is connected, the limiting hanging platform (122) is adjacent to the side hole portion (1212), and the inner diameter of the circular hole portion (1211) matches the outer diameter of the shaft body (21).

3. The drag chain link plate connection structure according to claim 1, characterized in that: A recessed groove (112) suitable for embedding the retaining edge (22) is provided on the outer surface of the first connecting plate (11), the retaining edge (22) is embedded in the recessed groove (112), the recessed groove (112) is a circular groove, the retaining edge (22) is circular, and the inner diameter of the recessed groove (112) matches the outer diameter of the retaining edge (22).

4. The drag chain link plate connection structure according to claim 1, characterized in that: A limiting retaining edge (126) is provided on the inner side of the limiting hanging platform (122), and the clamping block (23) is stopped at the limiting retaining edge (126) when the clamping block (23) is clamped with the clamping position (123).

5. The drag chain link plate connection structure according to claim 1, characterized in that: The first connecting plate (11) is provided with a circular groove (113) concentric with the first connecting hole (111) on its inner side, and the second connecting plate (12) is provided with a round table (124) protruding outwards, the round table (124) is inserted into the circular groove (113), and the outer diameter of the round table (124) matches the inner diameter of the circular groove (113).

6. The drag chain link plate connection structure according to claim 1, characterized in that: An angle limiting block (114) is provided on the inner side of the first connecting plate (11), and an angle limiting groove (125) is provided on the outer side of the second connecting plate (12); when two connected chain link plates (1) are connected, the angle limiting block (114) is located in the angle limiting groove (125), and two ends of the angle limiting groove (125) form retaining edges (127) for resisting and limiting the angle limiting block (114).

7. The drag chain link plate connection structure according to claim 1, characterized in that: The clamping block (23) has a clamping protrusion or a clamping groove, and the clamping position (123) is correspondingly configured as the clamping groove or the clamping protrusion.

8. The drag chain link plate connection structure according to claim 1, characterized in that: The screwing groove (24) is a cross groove, a straight groove or a polygonal groove.

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