Drag chain with locking structure

Abstract

The invention relates to the technical field of drag chains, in particular to a drag chain with a locking structure, which comprises a first protective part and a second protective part, the clamping piece comprises a first clamping assembly part and a second clamping assembly part which are arranged on the first protection piece and the second protection piece in a one-to-one correspondence manner; the locking piece comprises a first connecting part which is arranged on the first protection piece; the second connecting part is arranged on the second protection piece; the locking part is used for being assembled with the first connecting part and the second connecting part in a locking mode to limit separation of the first connecting part and the second connecting part, and the length direction of the locking part is parallel to the length direction of the protection space. The drag chain can effectively avoid exposure of a protection space caused by factors such as violent disassembly and assembly and violent vibration of equipment, meets the requirement for long-term stable work of the drag chain, is low in cost and facilitates popularization and application of the drag chain.

Description

Technical Field

[0001] The present invention relates to the technical field of drag chains, and particularly to a drag chain with a locking structure. Background Art

[0002] As an essential key component in industrial equipment, drag chains are widely used in many fields such as numerical control machine tools, electronic equipment, glass machinery, injection molding machines, etc. During the operation of the equipment, the drag chain undertakes the important tasks of towing and protecting the built-in cables, oil pipes, gas pipes, water pipes and other pipelines. By avoiding external force damages such as friction, stretching, and bending of the pipelines, it ensures the stable and efficient operation of the equipment, and is an important guarantee for ensuring the normal operation of the system in the process of industrial automation. However, there are generally two major problems to be solved urgently in the current market drag chains. First, for the drag chain assembled by two shells, the structural stability after assembly of the two shells is poor. Most existing drag chains adopt simple connection methods such as buckles, slots or bolts. Under the severe vibration, high-frequency reciprocating motion and accidental external force impact of the equipment, the connection parts are extremely easy to loosen, resulting in the separation of the shells and affecting the protection function of the drag chain for the pipelines. Second, the bending resistance of the drag chain is insufficient. Whether it is a common plastic drag chain with low stiffness and easy to sag and bend due to lateral force or its own weight, or a metal drag chain whose bending resistance is easily reduced due to fatigue, it is easy to bend and deform in actual use and cannot meet the requirements of long-term stable operation.

[0003] In response to the above problems, some technical solutions attempt to solve them by using special materials. For example, using high-strength alloys to manufacture metal drag chains, or using high-performance engineering plastics to make plastic drag chains. Although these special materials can effectively improve the bending resistance and connection strength of the drag chain, they bring the problem of high costs, which severely limits the market application of this solution.

[0004] Therefore, how to solve the deficiencies of the above existing technologies has become the subject to be studied and solved by the present invention. Summary of the Invention

[0005] The purpose of the present invention is to provide a drag chain with a locking structure.

[0006] To achieve the above purpose, the technical solution adopted by the present invention is: A drag chain with a locking structure, comprising: A first protective member and a second protective member that enclose to form a protective space; A clamping member, comprising: A first clamping and assembling part and a second clamping and assembling part, which are respectively arranged on the first protective member and the second protective member in one-to-one correspondence; A locking member, comprising: A first connecting part, arranged on the first protective member; The second connecting part is arranged on the second protective part; The locking part is used for locking and assembling with the first connecting part and the second connecting part to limit the separation of the two, and the length direction of the locking part is parallel to the length direction of the protective space.

[0007] The first protective part and the second protective part form a drag chain body.

[0008] For the first engaging and assembling part and the second engaging and assembling part, the two are respectively arranged on the first protective part and the second protective part. Specifically: the first engaging and assembling part is arranged on the first protective part, and the second engaging and assembling part is arranged on the second protective part. The first protective part and the second protective part themselves are only used for distinction by using descriptions such as "first" and "second". In fact, it can be generally summarized as: there are two protective parts, the first engaging and assembling part is arranged on one of the protective parts, and the second engaging and assembling part is arranged on the other protective part.

[0009] In the above solution, the first engaging and assembling part and the second engaging and assembling part are engaged and assembled. At this time, the first protective part and the second protective part are initially assembled, the protective space is formed and has a certain stability, the assembly difficulty is low, and the first protective part and the second protective part can be quickly separated when necessary, thereby reducing the assembly cost and disassembly cost.

[0010] When the first engaging and assembling part and the second engaging and assembling part are engaged and assembled, the anti-torsion ability of the drag chain depends more on the materials of the first protective part and the second protective part themselves. If materials with strong anti-torsion ability (such as high-strength engineering plastics like polyoxymethylene) are used, the cost is relatively high, and the types of available materials are limited, affecting the application range of the drag chain.

[0011] The locking part is used for locking and assembling with the first connecting part and the second connecting part. For the specific method, refer to the following embodiments. After locking and assembling, the locking part restricts the separation of the first connecting part and the second connecting part, thereby restricting the separation of the first protective part and the second protective part, improving the assembly stability of the drag chain, and improving the sealing performance of the protective space to a certain extent.

[0012] The length direction of the locking part is parallel to the length direction of the protective space. At this time, by adjusting the length and the material used for the locking part, the anti-torsion requirements of the drag chain can be met, the structural cost can be reduced, and at the same time, the anti-torsion ability of the drag chain can be flexibly adjusted by replacing the locking part (the locking part can also be cancelled).

[0013] In summary, when the drag chain is not required to have strong anti-torsion ability, only the engaging and assembling is implemented. On the contrary, at least the locking and assembling is implemented. After the locking and assembling, the drag chain has strong anti-torsion ability, which can effectively avoid the exposure of the protective space caused by factors such as violent disassembly and assembly and severe vibration of the equipment, meet the requirements of the long-term stable operation of the drag chain, and has low cost, which is beneficial to the popularization and application of the drag chain.

[0014] Further technical solution: The anti-torsion drag chain has a first assembly state and a second assembly state: In the first assembly state, the first engaging and assembling part and the second engaging and assembling part are engaged and assembled, and any one of the first protective part and the second protective part can rotate relative to the other around the same axis; In the second assembly state, the first engaging and assembling part and the second engaging and assembling part are engaged and assembled, and the locking part is locked and assembled on the first connecting part and the second connecting part, and the first protective part and the second protective part remain relatively stationary.

[0015] In the first assembly state, any one of the first protective part and the second protective part can rotate relative to the other. This assembly effect is generated by the engaging and assembling, which can not only realize the assembly of the first protective part and the second protective part, but also facilitate the relative movement of the two, and there is no need to disassemble the first engaging and assembling part and the second engaging and assembling part, which is applicable to more requirements, such as the requirement of taking out the objects in the protective space but quickly resetting the first protective part and the second protective part. It should be clear that taking the rotation of the first protective part as an example, friction needs to be overcome, so the protective space has a certain stability.

[0016] See Figure 1 , in the second assembly state, the first protective part and the second protective part remain relatively stationary. This assembly effect is generated by the locking and assembling, which is applicable to the requirements with higher stability and sealing of the protective space.

[0017] Further technical solution: The first protective part includes a first main body part, the second protective part includes a second main body part, and the first main body part and the second main body part enclose the protective space; The first main body part and the second main body part have the same structure; In the thickness direction of the protective space, the first main body part and the second main body part are symmetrically arranged; The first engaging and assembling part and the first connecting part are both arranged on the first main body part; The second engaging and assembling part and the second connecting part are both arranged on the second main body part.

[0018] The first main body part and the second main body part have the same structure and are symmetrically arranged, which can further ensure the sealing of the protective space, and at the same time can reduce the difficulty of processing the drag chain, thereby reducing the processing cost.

[0019] The first engaging and assembling part and the first connecting part are both arranged on the first main body part, and the connection relationship among the three is not limited. For example, they can be integrally arranged.

[0020] Further technical solution: in the length direction of the protection space, the end faces of the first main body part are arranged parallel to the end faces of the second main body part; And / or, in the length direction of the protection space, the end faces of the first main body part and the end faces of the second main body part are both straight faces; And / or, the two fitting faces between the first main body part and the second main body part are both straight faces to form two continuous horizontal sealing interfaces.

[0021] In the length direction of the protection space, the end faces of the first main body part are arranged parallel to the end faces of the second main body part, which is convenient for splicing and assembling between the drag chains.

[0022] In the length direction of the protection space, the end faces of the first main body part and the end faces of the second main body part are both straight faces, which can reduce the processing difficulty of the drag chain and thus reduce the processing cost.

[0023] The two fitting faces of the first main body part and the second main body part are straight faces to form two continuous horizontal sealing interfaces. Along the width direction of the protection space, the two continuous horizontal sealing interfaces are respectively located at both ends of the drag chain to ensure the sealing effect, and the straight face setting can further reduce the processing difficulty of the drag chain and thus reduce the processing cost.

[0024] Further technical solution: the first engaging and assembling part includes a first engaging part provided on the first protection part, and a engaging groove body is provided on the first engaging part; The second engaging and assembling part includes a second engaging part corresponding to the engaging groove body, and the second engaging part is provided on the second protection part.

[0025] This embodiment clarifies the implementation manner of the above engaging and assembling, that is, the preliminary assembly of the first protection part and the second protection part is realized through the engaging and assembling of the second engaging part and the engaging groove body, which is simple and fast.

[0026] Further technical solution: the second engaging and assembling part further includes a limiting part corresponding to the first engaging part, and the second engaging part is connected to the second protection part through the limiting part; The anti-torsion drag chain has an assembled state: In the assembled state, the second engaging part is engaged and assembled with the engaging groove body, and in the length direction of the protection space, the limiting part restricts the relative movement of the first engaging part and the second engaging part.

[0027] In the assembled state, in the length direction of the protection space, the limiting part restricts the relative movement of the first engaging part and the second engaging part, so that the first protection part and the second protection part are aligned in the length direction of the protection space, which is convenient for the combined use of multiple drag chains.

[0028] The limiting member can also play a role in guiding and aligning during the engaging and assembling process of the second engaging member and the engaging groove body.

[0029] In a further technical solution, a plurality of the first engaging members and the limiting members are provided; In the assembled state, in the length direction of the protection space, the first engaging members and the limiting members are alternately and closely arranged in sequence, and the sum of the sizes of the first engaging members and the limiting members is equal to the size of the protection space; Each of the first engaging members and the limiting members is close to the joint surface between the first protection member and the second protection member.

[0030] Here, three first engaging members and three limiting members are provided. The three first engaging members and the three limiting members are arranged alternately in sequence, and any adjacent first engaging member and limiting member are closely arranged. Based on this, on the one hand, the assembly stability of the drag chain is increased; on the other hand, the effect of preventing sundries from entering the protection space can be improved.

[0031] Each first engaging member and each limiting member are generally referred to as side structures here. In the length direction of the protection space, the end faces at both ends of this side structure are in the same plane as the end faces at both ends of the protection space, further increasing the effect of preventing sundries from entering the protection space.

[0032] Each first engaging member and each limiting member are close to the joint surface between the first protection member and the second protection member, further increasing the effect of preventing sundries from entering the protection space.

[0033] In a further technical solution, a plurality of the first connecting portions are provided, and the first connecting portions are arranged in parallel in the length direction of the protection space, and first through holes are provided on each of the first connecting portions; A plurality of the second connecting portions are provided, and the second connecting portions are arranged in parallel in the length direction of the protection space, and second through holes are provided on each of the second connecting portions; The anti-torsion drag chain has an assembled state: In the assembled state, the locking portion is inserted into each of the first through holes and the second through holes to limit the separation between the first connecting portion and the second connecting portion.

[0034] This embodiment clarifies the above locking and assembling method. In the assembled state, the locking portion is inserted into each first through hole and each second through hole to limit the separation between the first connecting portion and the second connecting portion, further improving the assembly stability and anti-twisting ability of the drag chain.

[0035] A plurality of the first connecting portion and the second connecting portion are provided, so that the supporting effect on the locking portion can be improved, which is applicable to the case where the locking portion is relatively long, and can cooperate to improve the anti-twisting ability of the drag chain.

[0036] In a further technical solution, in the length direction of the protection space in the assembled state, the first connecting parts and the second connecting parts are alternately and closely arranged in sequence, and the sum of the sizes of the first connecting parts and the second connecting parts is equal to the size of the protection space; Each of the first connecting parts and the second connecting parts is close to the joint surface between the first protection part and the second protection part.

[0037] Here, it is set that there are 3 first connecting parts and 3 second connecting parts. The 3 first connecting parts and the 3 second connecting parts are arranged alternately in sequence, and any adjacent first connecting part and second connecting part are closely arranged. Based on this, on the one hand, the assembly stability when the drag chain does not use the locking part is increased; on the other hand, sundries can be prevented from entering the protection space. Any adjacent first connecting part and second connecting part can also be closely arranged (such as with a spacing of 1 mm).

[0038] The first connecting parts and the second connecting parts are generally referred to as connecting structures herein. In the length direction of the protection space, the end faces at both ends of this connecting structure are in the same plane as the end faces at both ends of the protection space, further enhancing the effect of preventing sundries from entering the protection space. The length of this connecting structure can be less than the length of the protection space, and it can be specifically adjusted according to requirements.

[0039] Each of the first connecting parts and the second connecting parts is close to the joint surface between the first protection part and the second protection part, further enhancing the effect of preventing sundries from entering the protection space.

[0040] In a further technical solution, the length of the locking part is greater than the length of the protection space, and the sizes of both ends of the locking part are different; A jack is provided on the locking part, and the jack penetrates through the locking part along the length direction of the locking part.

[0041] Drag chains are generally used in combination. Taking two drag chains as an example, the two ends of the locking part along its own length direction are divided into a small head end and a large head end. When matching, the small head end of one locking part is inserted into the large head end of another drag chain to complete the stable splicing of the two drag chains. At this time, the function effect of the locking part is expanded.

[0042] Regarding the "first", "second", etc. used in this article, they do not particularly refer to the order or sequence, nor are they used to limit this case. They are only used to distinguish components or operations described with the same technical terms.

[0043] Regarding the "connection" or "positioning" used in this article, it can refer to two or more components or devices making direct physical contact with each other, or making indirect physical contact with each other, and can also refer to two or more components or devices operating or acting on each other.

[0044] As used herein, terms such as "comprising", "including", "having", etc. are all open-ended terms, meaning including but not limited to.

[0045] As for the terms used herein, unless otherwise specified, they generally have their ordinary meanings in the field, in the context of this case, and in the specific context. Certain terms used to describe this case will be discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art regarding the description of this case.

[0046] As for the terms such as "front", "rear", "upper", "lower", "left", "right", etc. used herein, they are all directional terms. In this case, they are only used to illustrate the positional relationship between various structures and do not limit the specific direction in the protection solution of this case and during actual implementation.

[0047] The working principle and advantages of the present invention are as follows: The first engaging and assembling part is engaged and assembled with the second engaging and assembling part. At this time, the first protective part and the second protective part are preliminarily assembled, the protective space is formed and has a certain stability, the assembly difficulty is low, and the first protective part and the second protective part can be quickly separated when necessary, thereby reducing the assembly cost and disassembly cost.

[0048] After the locking part is locked and assembled with the first connecting part and the second connecting part, the locking part restricts the separation of the first connecting part and the second connecting part, thereby restricting the separation of the first protective part and the second protective part, improving the assembly stability of the drag chain, and improving the sealing performance of the protective space to a certain extent.

[0049] Through the cooperation of the engaging part and the locking part, the stability of the protective space is ensured, thereby ensuring the protection function of the drag chain for the pipeline.

[0050] The length direction of the locking part is parallel to the length direction of the protective space. At this time, by adjusting the length and the material used for the locking part, the anti-torsion requirement of the drag chain can be met, the structural cost is reduced, and at the same time, the anti-torsion ability of the drag chain can be flexibly adjusted by replacing the locking part (or canceling the use of the locking part).

[0051] In summary, after the locking and assembling of the present invention, the drag chain has a strong anti-torsion ability, can effectively avoid the exposure of the protective space caused by factors such as violent disassembly and assembly, severe vibration of the equipment, etc., meets the requirements for the long-term stable operation of the drag chain, and because the structure is greatly simplified, the cost is low, which is beneficial to the market development and popularization and application of the drag chain products. And in some use scenarios, when the drag chain is not required to have a strong anti-torsion ability, only the engaging and assembling can be implemented, and vice versa, at least the locking and assembling should be implemented. Brief Description of the Drawings

[0052] Figure 1Schematic diagram of a specific embodiment of the anti-torsion cable carrier according to an embodiment of the present invention; Figure 2 is Figure 1 Schematic diagram of the structure from another perspective; Figure 3 is Figure 1 Schematic diagram of the structure from yet another perspective; Figure 4 is Figure 1 One of the partial structure diagrams of Figure 5 is Figure 4 Schematic diagram of the structure after omitting the locking part; Figure 6 is Figure 1 Two of the partial structure diagrams of Figure 7 is Figure 6 Schematic diagram of the structure after omitting the locking part; Figure 8 Schematic diagram of another specific embodiment of the anti-torsion cable carrier according to an embodiment of the present invention; Figure 9 is Figure 8 One of the partial structure diagrams of Figure 10 is Figure 8 Two of the partial structure diagrams of Figure 11 is Figure 8 Three of the partial structure diagrams of Figure 12 is Figure 11 Schematic diagram of the structure from another perspective.

[0053] In the above drawings: 1. Protection space; 2. First protection part; 21. First main body part; 3. Second protection part; 31. Second main body part; 4. Engaging part; 41. First engaging and assembling part; 411. First engaging part; 412. Engaging groove body; 42. Second engaging and assembling part; 421. Second engaging part; 422. Limiting part; 5. Locking part; 51. First connecting part; 511. First through hole; 52. Second connecting part; 521. Second through hole; 53. Locking part; 6. Continuous horizontal sealing interface. Specific embodiment

[0054] The present invention will be further described below with reference to the drawings and embodiments: Embodiment: The following will clearly illustrate this case with diagrams and detailed descriptions. After any person skilled in the art understands the embodiments of this case, they can make changes and modifications based on the technology taught by this case, and it does not deviate from the spirit and scope of this case.

[0055] The terms used in this document are only for describing specific embodiments and are not intended to limit the present case. Singular forms such as "a", "this", "that", "the", and "said", as used herein, also include plural forms.

[0056] See Figures 1 - 12 , a drag chain with a locking structure, comprising: A first protective member 2 and a second protective member 3 that (vertically) enclose to form a protective space 1; A clamping member 4, comprising: A first clamping and assembling portion 41 and a second clamping and assembling portion 42, which are respectively arranged on the first protective member 2 and the second protective member 3 in a one-to-one correspondence; A locking member 5, comprising: A first connecting portion 51, arranged on the first protective member 2; A second connecting portion 52, arranged on the second protective member 3; A locking portion 53, used for locking and assembling with the first connecting portion 51 and the second connecting portion 52 to limit their separation, and the length direction of the locking portion 53 is parallel to the length direction of the protective space 1.

[0057] The first protective member 2 and the second protective member 3 form a drag chain body.

[0058] The locking member 5 is a locking structure.

[0059] In Figure 2 the perspective, the first protective member 2 and the second protective member 3 are distributed vertically (in the up and down direction, which can also be said to be the thickness direction of the protective space 1), and the clamping member 4 and the locking member 5 are arranged on both sides of the protective space 1 in the left and right direction.

[0060] Figure 1 The structure in can be regarded as a single link (or a single-link drag chain). When protecting objects such as circuits, multiple links are used in cooperation, which is an existing setting.

[0061] For the first clamping and assembling portion 41 and the second clamping and assembling portion 42, which are respectively arranged on the first protective member 2 and the second protective member 3 in a one-to-one correspondence, specifically: the first clamping and assembling portion 41 is arranged on the first protective member 2, the second clamping and assembling portion 42 is arranged on the second protective member 3. The first protective member 2 and the second protective member 3 are only used for distinction with the descriptions of "first" and "second". In fact, it can be generalized as: having two protective members, the first clamping and assembling portion 41 is arranged on one of the protective members, and the second clamping and assembling portion 42 is arranged on the other protective member.

[0062] The first engaging and assembling part 41 is engaged and assembled with the second engaging and assembling part 42. At this time, the first protective part 2 and the second protective part 3 are preliminarily assembled, the protective space 1 is formed and has a certain stability, the assembly difficulty is low, and the first protective part 2 and the second protective part 3 can be quickly separated when necessary, thereby reducing the assembly cost and disassembly cost.

[0063] When the first engaging and assembling part 41 is engaged and assembled with the second engaging and assembling part 42, the anti-torsion ability of the drag chain depends more on the materials of the first protective part 2 and the second protective part 3 themselves. If materials with strong anti-torsion ability (such as high-strength engineering plastics like polyoxymethylene) are used, the cost is high, and the types of materials that can be used are limited, affecting the applicable range of the drag chain.

[0064] The locking part 53 is used for locking and assembling with the first connecting part 51 and the second connecting part 52. For the specific method, refer to the following embodiments. After the locking and assembling, the locking part 53 restricts the separation of the first connecting part 51 and the second connecting part 52, thereby restricting the separation of the first protective part 2 and the second protective part 3, improving the assembly stability of the drag chain, and improving the sealing performance of the protective space 1 to a certain extent.

[0065] The length direction of the locking part 53 is parallel to the length direction of the protective space 1. At this time, by adjusting the length and the used material of the locking part 53, the anti-torsion requirement of the drag chain can be met, the structural cost is reduced, and at the same time, the anti-torsion ability of the drag chain can be flexibly adjusted by replacing the locking part 53 (the locking part 53 can also be cancelled).

[0066] In summary, when the drag chain is not required to have strong anti-torsion ability, only the engaging and assembling is implemented. On the contrary, at least the locking and assembling is implemented. After the locking and assembling, the drag chain has strong anti-torsion ability, which can effectively avoid the exposure of the protective space 1 due to factors such as violent disassembly and assembly, and severe vibration of the equipment, meet the requirements for the long-term stable operation of the drag chain, and the cost is low, which is beneficial to the popularization and application of the drag chain.

[0067] The materials used for each structure in the drag chain are not elaborated one by one in this application, and only some materials that can be used for some structures are exemplified.

[0068] Taking the first connecting part 51 as an example, the first connecting part 51 is arranged on the first protective part 2, and can be fixedly connected, integrally arranged or rotatably connected, etc., which is not limited here.

[0069] In some embodiments, the length of the locking part 53 is at least equal to half of the length of the protective space 1 (including the scheme where the lengths of the two are the same, etc.).

[0070] In some embodiments, along the width direction of the protective space 1, the engaging part 4 and the locking part 5 are respectively arranged at both ends of the protective space 1.

[0071] It should be noted that the "fitting" in this application can also be understood as being close to a certain extent. For example, there can be a small gap (such as 1 mm) between structures.

[0072] It should be emphasized that the first protective member 2 and the second protective member 3 are only distinguished for the purpose of illustration. In fact, they can be generally summarized as two protective members. Therefore, due to the diversity of situations and the limited number of attached drawings, the first engaging and assembling portion 41 is taken as an example for illustration. Even if the first engaging and assembling portion 41 is provided on the first protective member 2 in some of the attached drawings, it should not be understood as conflicting with the description that it is provided on the second protective member 3 in some embodiments.

[0073] In this embodiment, the anti-torsion drag chain has a first assembly state and a second assembly state: In the first assembly state, the first engaging and assembling portion 41 is engaged and assembled with the second engaging and assembling portion 42, and any one of the first protective member 2 and the second protective member 3 can rotate relative to the other about the same axis, and the axial projection of this axis is located in the axial projection of the engaging member 4.

[0074] In the second assembly state, the first engaging and assembling portion 41 is engaged and assembled with the second engaging and assembling portion 42, and the locking member 5 is locked and assembled on the first connecting portion 51 and the second connecting portion 52, and the first protective member 2 and the second protective member 3 remain relatively stationary.

[0075] In the first assembly state, any one of the first protective member 2 and the second protective member 3 can rotate relative to the other. This assembly effect is generated by the engaging and assembling, which can not only realize the assembly of the first protective member 2 and the second protective member 3, but also facilitate the relative movement of the two, and there is no need to disassemble the first engaging and assembling portion 41 and the second engaging and assembling portion 42, which is applicable to more requirements, such as the requirement of taking out the objects in the protective space 1 but quickly resetting the first protective member 2 and the second protective member 3. It should be clear that taking the rotation of the first protective member 2 as an example, friction needs to be overcome, so the protective space 1 has a certain stability.

[0076] Any one of the first protective member 2 and the second protective member 3 can rotate relative to the other about the same axis. This axis can be clearly understood through the attached drawings, and can also be understood as the axis of the following second engaging member 421.

[0077] See Figure 1 , in the second assembly state, the first protective member 2 and the second protective member 3 remain relatively stationary. This assembly effect is generated by the locking and assembling, which is applicable to the requirements with higher stability and sealing of the protective space 1.

[0078] In some embodiments, along the width direction of the protection space 1, the involved structures of the locking assembly and the engaging assembly are respectively arranged at both ends of the drag chain, further improving the stability and sealing performance of the protection space 1 and also avoiding mutual interference between the two.

[0079] See Figure 2 , Figure 8 , in this embodiment, the first protection member 2 includes a first main body portion 21, the second protection member 3 includes a second main body portion 31, and the first main body portion 21 and the second main body portion 31 enclose to form the protection space 1; The first main body portion 21 and the second main body portion 31 have the same structure; In the thickness direction of the protection space 1, the first main body portion 21 and the second main body portion 31 are symmetrically arranged; The first engaging and assembling portion 41 and the first connecting portion 51 are both arranged on the first main body portion 21; The second engaging and assembling portion 42 and the second connecting portion 52 are both arranged on the second main body portion 31.

[0080] The first main body portion 21 and the second main body portion 31 have the same and symmetrically arranged structures, which can further ensure the sealing performance of the protection space 1 and at the same time reduce the difficulty of processing the drag chain, thereby reducing the processing cost.

[0081] The first engaging and assembling portion 41 and the first connecting portion 51 are both arranged on the first main body portion 21, and there is no limitation on the connection relationship among the three, such as they can be integrally arranged.

[0082] See Figures 1 - 3 , in this embodiment, in the length direction of the protection space 1, the end faces of the two ends of the first main body portion 21 and the end faces of the two ends of the second main body portion 31 are arranged parallel to each other; And / or, in the length direction of the protection space 1, the end faces of the two ends of the first main body portion 21 and the end faces of the two ends of the second main body portion 31 are both straight faces; And / or, the two fitting faces between the first main body portion 21 and the second main body portion 31 are both straight faces to form two continuous horizontal sealing interfaces 6.

[0083] In the length direction of the protection space 1, the end faces of the two ends of the first main body portion 21 and the end faces of the two ends of the second main body portion 31 are arranged parallel to each other, so that it is convenient to splice and assemble the drag chains.

[0084] In the length direction of the protection space 1, the end faces of the two ends of the first main body portion 21 and the end faces of the two ends of the second main body portion 31 are both straight faces, so that the processing difficulty of the drag chain can be reduced, thereby reducing the processing cost.

[0085] The two mating surfaces of the first main body portion 21 and the second main body portion 31 are straight surfaces to form two continuous horizontal sealing interfaces 6. Along the width direction of the protection space 1, the two continuous horizontal sealing interfaces 6 are respectively located at both ends of the drag chain and have a width, so as to ensure the sealing effect. And the straight surface setting can further reduce the processing difficulty of the drag chain, thereby reducing the processing cost.

[0086] See Figures 4 - 10 , in this embodiment, the first engaging and assembling portion 41 includes a first engaging member 411 provided on the first protective member 2, and a engaging groove body 412 is provided on the first engaging member 411; The second engaging and assembling portion 42 includes a second engaging member 421 corresponding to the engaging groove body 412, and the second engaging member 421 is provided on the second protective member 3.

[0087] This embodiment clarifies the implementation manner of the above-mentioned engaging and assembling, that is, the preliminary assembly of the first protective member 2 and the second protective member 3 is realized through the engaging and assembling of the second engaging member 421 and the engaging groove body 412, which is simple and fast.

[0088] See Figures 3 - 5 , in this embodiment, the second engaging and assembling portion 42 further includes a limiting member 422 corresponding to the first engaging member 411, and the second engaging member 421 is connected to the second protective member 3 through the limiting member 422; The anti-torsion drag chain has an assembled state: In the assembled state, the second engaging member 421 is engaged and assembled with the engaging groove body 412, and in the length direction of the protection space 1, the limiting member 422 restricts the relative movement of the first engaging member 411 and the second engaging member 421.

[0089] In the assembled state, in the length direction of the protection space 1, the limiting member 422 restricts the relative movement of the first engaging member 411 and the second engaging member 421, so that the first protective member 2 and the second protective member 3 are aligned in the length direction of the protection space 1, which is convenient for the combined use of multiple drag chains.

[0090] The limiting member 422 can also play a role of guiding and aligning during the engaging and assembling process of the second engaging member 421 and the engaging groove body 412.

[0091] The limiting member 422 can also prevent sundries from entering the protection space 1, specifically see the following embodiments.

[0092] See Figure 3 、 Figure 9 , in this embodiment, both the first engaging member 411 and the limiting member 422 are provided in multiple numbers; In the assembled state, in the length direction of the protection space 1, the first clamping members 411 and the limiting members 422 are alternately and sequentially arranged in a fitting manner, and the sum of the sizes of the first clamping members 411 and the limiting members 422 is equal to the size of the protection space 1; Both the first clamping members 411 and the limiting members 422 are close to the fitting surface between the first protection member 2 and the second protection member 3.

[0093] Here, both the first clamping members 411 and the limiting members 422 are provided with 3. The 3 first clamping members 411 and the 3 limiting members 422 are arranged in a sequential and alternating manner, and any adjacent first clamping member 411 and limiting member 422 are arranged in a fitting manner. Based on this, on the one hand, the assembly stability of the drag chain is increased; on the other hand, the effect of preventing sundries from entering the protection space 1 can be improved.

[0094] The first clamping members 411 and the limiting members 422 are generally referred to as side structures herein. In the length direction of the protection space 1, the end faces at both ends of this side structure are in the same plane as the end faces of the protection space 1, further increasing the effect of preventing sundries from entering the protection space 1.

[0095] Both the first clamping members 411 and the limiting members 422 are close to the fitting surface between the first protection member 2 and the second protection member 3, further increasing the effect of preventing sundries from entering the protection space 1.

[0096] It should be noted that the focus of this application is the anti-torsion of the drag chain, but the assembly stability of the drag chain, the sealing performance of the protection space 1, etc. are also the improvement directions of this application.

[0097] In some embodiments, in the length direction of the protection space 1, the size of the second clamping member 421 is equal to the size of the protection space 1.

[0098] See Figure 3 、 Figure 5 And Figure 7 , in this embodiment, the first connecting portions 51 are provided with multiple ones, and the first connecting portions 51 are arranged in parallel in the length direction of the protection space 1, and first through holes 511 are provided on all the first connecting portions 51; The second connecting portions 52 are provided with multiple ones, and the second connecting portions 52 are arranged in parallel in the length direction of the protection space 1, and second through holes 521 are provided on all the second connecting portions 52; The anti-torsion drag chain has an assembled state: In the assembled state, the locking portion 53 is inserted into the first through holes 511 and the second through holes 521 to limit the separation of the first connecting portion 51 and the second connecting portion 52 from each other.

[0099] The first perforation 511 and the second perforation 521 can also be regarded as groove-like structures in some cases. For details, refer to the attached drawings. The structural settings in the attached drawings are the specific settings of each structure in some specific embodiments of the present application, but are not limited thereto.

[0100] See Figure 1 , in some embodiments, the first perforation 511 and the second perforation 521 are circular holes. At this time, the bonding force between the corresponding structures is stronger, and the anti-torsion ability of the drag chain is better.

[0101] See Figure 8 , in some embodiments, the first perforation 511 and the second perforation 521 are fan-shaped holes (preferably fan-shaped holes with a central angle greater than 180°). When it is necessary to separate the first protective member 2 and the second protective member 3, it is necessary to move the first perforation 511 upward or move the second perforation 521 downward. Taking the upward movement of the first perforation 511 as an example, at this time, the opening of the first perforation 511 faces upward, the opening of the second perforation 521 faces downward, and the upward movement of the first perforation 511 will drive the locking portion 53 to move upward, while the locking portion 53 needs to move downward to separate from the second perforation 521, thereby restricting the separation of the first protective member 2 and the second protective member 3. Based on this, the material cost can be reduced.

[0102] This embodiment clarifies the above-mentioned locking and assembling method. In the assembled state, the locking portion 53 is inserted into each first perforation 511 and each second perforation 521 to limit the separation of the first connecting portion 51 and the second connecting portion 52, further improving the assembly stability and anti-twisting ability of the drag chain.

[0103] Both the first connecting portion 51 and the second connecting portion 52 are provided in multiple numbers, so as to improve the supporting effect on the locking portion 53, which is applicable to the case where the locking portion 53 is relatively long, and can cooperate to improve the anti-twisting ability of the drag chain.

[0104] In some embodiments, the locking portion 53 is snap-fitted into each first perforation 511 and each second perforation 521, avoiding the easy movement of the locking portion 53, and also facilitating the locking portion 53 to share this part of the acting force in time when the drag chain body is subjected to an external acting force.

[0105] See Figure 3 , in this embodiment, in the assembled state, in the length direction of the protection space 1, each of the first connecting portions 51 and each of the second connecting portions 52 are alternately and closely arranged in sequence, and the sum of the sizes of each of the first connecting portions 51 and each of the second connecting portions 52 is equal to the size of the protection space 1; Each of the first connecting portions 51 and each of the second connecting portions 52 are close to the joint surface between the first protective member 2 and the second protective member 3.

[0106] The staggered arrangement itself can play a limiting role.

[0107] The sum of the dimensions of each first connecting portion 51 and each second connecting portion 52 is equal to the dimension of the protection space 1. "Equal" can be understood in two senses: the same and close. For example, there can be a deviation of millimeters or centimeters (such as a difference of 1 centimeter) between the two dimensions. Specifically, the sum of the dimensions of each first connecting portion 51 and each second connecting portion 52 is the same as or close to the dimension of the protection space 1.

[0108] Here, both the first connecting portion 51 and the second connecting portion 52 are provided in three numbers. The three first connecting portions 51 and the three second connecting portions 52 are arranged in an alternating sequence, and any adjacent first connecting portion 51 and second connecting portion 52 are arranged in a fitting manner. Based on this, on the one hand, the assembly stability when the drag chain does not use the locking portion 53 is increased; on the other hand, sundries can be prevented from entering the protection space 1. Any adjacent first connecting portion 51 and second connecting portion 52 can also be arranged closely (such as with a spacing of 1 millimeter).

[0109] Each first connecting portion 51 and each second connecting portion 52 are generally referred to as a connecting structure here. In the length direction of the protection space 1, the end faces of both ends of this connecting structure are in the same plane as the end faces of the protection space 1, further increasing the effect of preventing sundries from entering the protection space 1. The length of this connecting structure can be less than the length of the protection space 1, and it can be adjusted specifically according to requirements.

[0110] Each first connecting portion 51 and each second connecting portion 52 are both close to the fitting surface between the first protection member 2 and the second protection member 3, further increasing the effect of preventing sundries from entering the protection space 1.

[0111] The setting of the limiting member 422 also facilitates the sequential staggering and fitting arrangement of each first connecting portion 51 and each second connecting portion 52.

[0112] See Figure 3 , in this embodiment, the length of the locking member 5 is greater than the length of the protection space 1, and the dimensions of both ends of the locking member 5 are different; The locking member 5 is provided with a jack, and the jack penetrates the locking member 5 along the length direction of the locking member 5.

[0113] Drag chains are generally used in combination. Taking two drag chains as an example, the two ends of the locking member 5 along its own length direction are divided into a small head end and a large head end. When matching, the small head end of one locking member 5 is inserted into the large head end of another drag chain to complete the stable splicing of the two drag chains. At this time, the function effect of the locking member 5 is expanded. The jack can be provided only at the large head end.

[0114] In some embodiments, multiple drag chains share the same locking member 5.

[0115] The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly. It is not intended to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. A drag chain with a locking structure, characterized in that: Comprising: A first protective member (2) and a second protective member (3) that enclose a protective space (1) from above and below; A clamping member (4) and a locking member (5) respectively disposed on the left and right sides of the protective space (1); The clamping member (4) includes: A first clamping and assembling portion (41) and a second clamping and assembling portion (42), which are respectively disposed on the first protective member (2) and the second protective member (3) in a one-to-one correspondence; The locking member (5) includes: A first connecting portion (51), disposed on the first protective member (2); A second connecting portion (52), disposed on the second protective member (3); A locking portion (53) for locking and assembling with the first connecting portion (51) and the second connecting portion (52) to restrict their separation, and the length direction of the locking portion (53) is parallel to the length direction of the protective space (1).

2. The drag chain with a locking structure according to claim 1, characterized in that: The anti-torsion drag chain has a first assembling state and a second assembling state: In the first assembling state, the first clamping and assembling portion (41) and the second clamping and assembling portion (42) are clamped and assembled, and any one of the first protective member (2) and the second protective member (3) can rotate relative to the other around the same axis; In the second assembling state, the first clamping and assembling portion (41) and the second clamping and assembling portion (42) are clamped and assembled, and the locking member (5) is locked and assembled on the first connecting portion (51) and the second connecting portion (52), and the first protective member (2) and the second protective member (3) remain relatively stationary.

3. A drag chain with a locking structure according to claim 1, characterized in that: The first protective member (2) includes a first main body portion (21), and the second protective member (3) includes a second main body portion (31), and the first main body portion (21) and the second main body portion (31) enclose the protective space (1); The first main body portion (21) and the second main body portion (31) have the same structure; In the up and down direction, the first main body portion (21) and the second main body portion (31) are symmetrically arranged; The first clamping and assembling portion (41) and the first connecting portion (51) are both disposed on the first main body portion (21); The second clamping and assembling portion (42) and the second connecting portion (52) are both disposed on the second main body portion (31).

4. The drag chain with a locking structure according to claim 3, characterized in that: In the length direction of the protective space (1), the end faces of the two ends of the first main body portion (21) and the end faces of the two ends of the second main body portion (31) are arranged parallel to each other; And / or, in the length direction of the protective space (1), the end faces of the two ends of the first main body portion (21) and the end faces of the two ends of the second main body portion (31) are both straight faces.

5. A drag chain with a locking structure according to claim 1, characterized in that: The first clamping and assembling portion (41) includes a first clamping member (411) disposed on the first protective member (2), and a clamping groove body (412) is provided on the first clamping member (411); The second clamping and assembling portion (42) includes a second clamping member (421) corresponding to the clamping groove body (412), and the second clamping member (421) is disposed on the second protective member (3).

6. The drag chain with a locking structure according to claim 5, characterized in that: The second engaging and assembling portion (42) further includes a limiting member (422) corresponding to the first engaging member (411), and the second engaging member (421) is connected to the second protective member (3) through the limiting member (422). The anti-torsion drag chain has an assembled state: In the assembled state, the second engaging member (421) is engaged and assembled with the engaging groove body (412), and in the length direction of the protective space (1), the limiting member (422) restricts the relative movement between the first engaging member (411) and the second engaging member (421).

7. The drag chain with a locking structure according to claim 6, characterized in that: Both the first engaging member (411) and the limiting member (422) are provided in plurality; In the assembled state, in the length direction of the protective space (1), each of the first engaging members (411) and each of the limiting members (422) are arranged alternately and in contact with each other in sequence, and the sum of the sizes of each of the first engaging members (411) and each of the limiting members (422) is equal to the size of the protective space (1); Each of the first engaging members (411) and each of the limiting members (422) are close to the joint surface between the first protective member (2) and the second protective member (3).

8. A drag chain with a locking structure according to claim 1, characterized in that: The first connecting portions (51) are provided in plurality, and each of the first connecting portions (51) are arranged in parallel in the length direction of the protective space (1), and each of the first connecting portions (51) is provided with a first through hole (511); The second connecting portions (52) are provided in plurality, and each of the second connecting portions (52) are arranged in parallel in the length direction of the protective space (1), and each of the second connecting portions (52) is provided with a second through hole (521); The anti-torsion drag chain has an assembled state: In the assembled state, the locking portion (53) is inserted into each of the first through holes (511) and each of the second through holes (521) to restrict the separation between the first connecting portion (51) and the second connecting portion (52).

9. The drag chain with a locking structure according to claim 8, characterized in that: In the assembled state, in the length direction of the protective space (1), each of the first connecting portions (51) and each of the second connecting portions (52) are arranged alternately and in contact with each other in sequence, and the sum of the sizes of each of the first connecting portions (51) and each of the second connecting portions (52) is equal to the size of the protective space (1); Each of the first connecting portions (51) and each of the second connecting portions (52) are close to the joint surface between the first protective member (2) and the second protective member (3).

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