Link shackle
By connecting the left and right clamps with screws and nuts, and combining the design of adding a liner and hinge, the problem of insufficient shear strength and aesthetics of traditional connection methods is solved, achieving a stable and convenient pipe connection, suitable for exhibitions and outdoor equipment.
Patent Information
- Application Number
- CN202520295717.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-24
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-02-24
AI Technical Summary
In existing technologies, plastic cable ties or metal wire binding methods have insufficient shear strength when connecting pipes of different diameters, are inconvenient to operate and unsightly, and cannot meet the stability and aesthetic requirements of exhibition and outdoor equipment fields.
The left and right clamps are fixed together by screws and nuts. The clamp design is suitable for clamping large-diameter pipes, and small-diameter pipes can be clamped by adding a liner. Combined with the structure of hinge shaft, ball head and hand wheel, a stable connection is achieved.
It improves connection stability and ease of operation, meets the connection needs of pipes of different diameters, and has a simple and beautiful appearance, making it suitable for exhibitions and outdoor equipment.
Smart Images
Figure CN223894653U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a connecting piece especially links a chain lock. BACKGROUND
[0002] With the rapid development of modern exhibition display industry and outdoor equipment field, pipe connecting technology is facing higher functional requirements and aesthetic needs. In the application scenarios such as exhibition stand building, tent support and temporary facility construction, reliable connection between pipes of different diameters is often needed, especially in the cross fixing and angle adjustment of pipes of different diameters, the traditional connection mode has shown significant technical limitations.
[0003] The plastic cable ties or metal wire binding methods commonly used in the industry have certain defects: firstly, in terms of physical properties, the shear strength of such flexible binding materials is insufficient, and slippage is easy to occur under dynamic load, making it difficult to ensure the stability of the connection structure; secondly, in terms of operational convenience, multiple people are needed to cooperate during installation and the process is time-consuming, and the one-time use characteristic leads to frequent replacement of connection materials during repeated construction; thirdly, the exposed and messy binding strips seriously damage the overall aesthetics of product design. SUMMARY
[0004] To overcome the above-mentioned defects or one of the defects in the prior art, the utility model provides a link chain lock, and the technical scheme adopted is:
[0005] A link chain lock comprises a left clamping body and a right clamping body, which are fixed together by screws and nuts, and is different from the prior art in that a clamping opening corresponding to the half width of a large-diameter pipe is formed near each end of the left clamping body and the right clamping body, and the left clamping body and the right clamping body are adapted to clamp two large-diameter pipes in parallel after being closed; a through hole through which a screw rod passes is formed in each of the left clamping body and the right clamping body, and two opposing lining bodies are installed or not installed in each clamping opening, and four lining bodies are adapted to clamp a small-diameter pipe after being closed.
[0006] Further, a round-bottom shaft groove is formed on the left clamping body and the right clamping body on both sides of the clamping opening; a hinge shaft is fixed on the lining body, and the hinge shaft is connected to the round-bottom shaft groove; a receiving groove is formed on the left clamping body and the right clamping body on both sides of the through hole; when the lining body is not installed in the clamping opening, the lining body is turned over and placed in the receiving groove.
[0007] Further, a semicircular groove is formed on the lining body opposite to the hinge shaft to avoid the screw rod.
[0008] Furthermore, a ball head is provided at the free end of the hinge shaft, and a ball socket is provided on the side wall of the round bottom shaft groove. Through the ball head and the ball socket, the liner can be engaged with or removed from the left or right clamp.
[0009] Furthermore, a circular countersunk groove is formed on the outer side of the left clamp corresponding to the through hole. One end of the screw is fixed to a frustum, and part of the frustum enters the circular countersunk hole. The inner end of the frustum abuts against the bottom of the circular countersunk groove.
[0010] Furthermore, a handwheel is fixedly connected to the outer end of the frustum.
[0011] Furthermore, a hexagonal countersunk groove is formed on the outer side of the right clamp corresponding to the through hole, and the nut enters the hexagonal countersunk groove and is tightly fitted.
[0012] Furthermore, the depth of the clamp is less than or equal to half the diameter of the large-diameter pipe, and the thickness of the liner is equal to half the difference between the diameters of the large-diameter pipe and the small-diameter pipe.
[0013] Furthermore, the outline shape of the clamp and the liner after they are joined is circular, square, regular hexagon, regular octagon or petal-shaped.
[0014] Furthermore, the left and right clamps are thin-walled components with reinforcing ribs.
[0015] Compared with the prior art, the beneficial technical effects of this utility model are as follows:
[0016] High connection stability: Abandoning flexible binding materials such as plastic cable ties and metal wires, the left and right clamps are fastened with screws and nuts, which greatly improves shear strength, effectively prevents slippage under dynamic loads, ensures the stability of the connection structure, and meets the stability requirements of scenarios such as exhibition stand construction and tent support.
[0017] Easy and efficient to operate: The installation process is simple, requires no multiple people to cooperate, and is reusable. It solves the problems of time-consuming installation and frequent material replacement required for repeated construction in traditional methods, improves construction efficiency, reduces material costs, and is suitable for various temporary facility constructions.
[0018] Simple and beautiful appearance: The overall design has no messy exposed straps, and the product has a simple appearance. While meeting the functionality of pipe connection, it can be better integrated into various application scenarios and meet the growing aesthetic needs of the modern exhibition and display industry and outdoor equipment field.
[0019] Strong pipe diameter adaptability: The clamp is equipped with a liner that can be added or removed. When the left and right clamps are aligned, they can clamp two large-diameter pipes in parallel, and the four liners can be aligned to clamp small-diameter pipes, solving the connection problem of pipes with different diameters. It is especially suitable for fixing pipes with different diameters. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the structure of the left clamp of this utility model.
[0021] Figure 2 This is a structural schematic diagram of the left clamp of this utility model from another perspective.
[0022] Figure 3 This is a schematic diagram of the right clamp of this utility model.
[0023] Figure 4 This is a structural schematic diagram of the right clamp of this utility model from another perspective.
[0024] Figure 5 This is a structural schematic diagram of the screw of this utility model.
[0025] Figure 6 This is a schematic diagram of the structure of the liner of this utility model.
[0026] Figure 7 This is a structural diagram of the present invention when connecting two large-diameter pipes.
[0027] Figure 8 This is a structural diagram of the present invention when connecting one large-diameter pipe and one small-diameter pipe. Detailed Implementation
[0028] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "communication" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0030] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0031] like Figures 1-8 The illustrated linkage includes a left clamp 1 and a right clamp 2, which are fixed together by screws 3 and nuts 4. Clamping openings 6, corresponding to the half-width of a large-diameter pipe, are respectively opened near both ends of the left clamp 1 and the right clamp 2. When the left clamp 1 and the right clamp 2 are engaged, they are suitable for clamping two large-diameter pipes in parallel. Through holes 9, which allow the screws 3 to pass through, are respectively opened in the middle of the left clamp 1 and the right clamp 2. Two opposing bushings 5 are installed or not installed in each clamping opening 6. When the four bushings 5 are engaged, they are suitable for clamping small-diameter pipes.
[0032] The left clamp 1 and the right clamp 2 are provided with clamping openings 6 at both ends that are adapted to the half-width shape of the large-diameter pipe. They are fastened together by screws 3 and nuts 4. After they are engaged, the two large-diameter pipes can be clamped in parallel and stably by means of the fit and fastening force of the clamping openings 6. The connection method of screws and nuts provides strong shear strength and ensures that the connection structure will not slip under dynamic load.
[0033] The clamp 6 can be fitted with opposing bushings 5 as needed. After the four bushings 5 are aligned, they form a space that is compatible with small-diameter pipes, thereby clamping small-diameter pipes and solving the connection problem of pipes of different diameters.
[0034] Usage process:
[0035] 1. Determine whether a liner 5 is needed based on the diameter of the pipe to be connected. If connecting a large-diameter pipe, prepare the left clamp 1, right clamp 2, screw 3, and nut 4 directly; if connecting a small-diameter pipe, a liner 5 is also required.
[0036] 2. Connecting large-diameter pipes: Place the two large-diameter pipes at the clamping openings 6 at both ends of the left clamp 1 and the right clamp 2 respectively. After aligning the positions, insert the screw 3 through the through hole 9 and tighten the nut 4 on the outside of the right clamp 2 to make the left and right clamps fit tightly together, thereby firmly clamping the two large-diameter pipes.
[0037] 3. Connecting small-diameter pipes: First, install the liner 5 inside the clamp 6, place the small-diameter pipe between the four liner 5 after they are aligned, and then tighten it with the left and right clamps, screws and nuts in the same way as connecting large-diameter pipes.
[0038] In another preferred embodiment, round-bottomed shaft grooves 7 are respectively formed on the left clamping body 1 and the right clamping body 2 on both sides of the clamping opening 6; a hinge shaft 8 is fixed on the liner 5, and the hinge shaft 8 is rotatably connected to the round-bottomed shaft groove 7; a storage groove 10 is formed on the left clamping body 1 and the right clamping body 2 on both sides of the through hole 9; when the liner 5 is not installed in the clamping opening 6, the liner 5 is flipped and placed into the storage groove 10. The round-bottomed shaft grooves 7 are formed on the left clamping body 1 and the right clamping body 2 on both sides of the clamping opening 6, and the hinge shaft 8 is fixed on the liner 5 and rotatably connected to the round-bottomed shaft groove 7, allowing the liner 5 to rotate flexibly. When the liner 5 is not required to be installed in the clamping opening 6, the liner 5 can be flipped and placed into the storage groove 10 formed on both sides of the through hole 9. This design facilitates the storage and retrieval of the liner 5, preventing its loss. It also makes the overall structure of the connecting shackle more concise and compact when the liner 5 is not in use. In actual use, if only large-diameter pipes need to be connected on site, the liner 5 can be stored away to save space.
[0039] In another preferred embodiment, a semi-circular groove 11 is formed on the liner 5 opposite to the hinge shaft 8 to avoid the screw 3. The semi-circular groove 11 on the liner 5 opposite to the hinge shaft 8 serves to avoid the screw 3. When the liner 5 is installed in the clamp 6 and pipe connection is performed, the semi-circular groove 11 ensures that the screw 3 will not interfere with the liner 5, guaranteeing the rationality and stability of the entire connection structure. This ensures that when tightening the screw, the liner 5 will not be unable to be installed normally due to the screw obstruction, or that the clamping effect of the pipe will be affected.
[0040] In another preferred embodiment, a ball head 12 is provided at the free end of the hinge shaft 8, and a ball socket 13 is formed on the side wall of the round-bottomed shaft groove 7. Through the ball head 12 and the ball socket 13, the liner 5 can be snapped onto or removed from the left clamp 1 or the right clamp 2. This snap-fit method makes the installation and removal of the liner 5 more convenient, and also increases the stability of the liner 5 in the working state, preventing it from accidentally falling off. In scenarios where different pipe diameters are frequently changed, the liner 5 can be quickly replaced.
[0041] In another preferred embodiment, a circular countersunk groove 14 is formed on the outer side of the left clamp 1 corresponding to the through hole 9. One end of the screw 3 is fixed to a frustum 15, a portion of which enters the circular countersunk hole 14, and the inner end of the frustum 15 abuts against the bottom of the circular countersunk groove 14. This design allows the screw 3 to be positioned more accurately during tightening, preventing the screw 3 from shifting or wobbling within the through hole 9, thereby ensuring the reliability of the connection between the left clamp 1 and the right clamp 2 and improving the structural strength of the entire linkage.
[0042] In another preferred embodiment, a handwheel 16 is fixedly connected to the outer end of the frustum 15. Operators can easily tighten or loosen the screw 3 by rotating the handwheel 16. Compared to traditional tool-based tightening methods, the design of the handwheel 16 greatly improves operational convenience and reduces labor intensity. Even without specialized tools, pipe connection and disassembly can be completed quickly, making it particularly suitable for outdoor and other scenarios with limited operating space.
[0043] In another preferred embodiment, a hexagonal countersunk groove 17 is formed on the outer side of the right clamp 2 corresponding to the through hole 9, and the nut 4 enters the hexagonal countersunk groove 17 and is tightly fitted. The hexagonal countersunk groove 17 provides a stable installation position for the nut 4, preventing the nut 4 from rotating or shifting during tightening or operation, ensuring a firm and reliable connection between the left clamp 1 and the right clamp 2, and guaranteeing that the entire linkage will not affect the connection effect due to nut loosening when subjected to various external forces.
[0044] In another preferred embodiment, the depth of the clamp 6 is less than or equal to half the diameter of the larger diameter pipe, and the thickness of the liner 5 is equal to half the diameter difference between the larger and smaller diameter pipes. This depth design ensures effective clamping of the larger diameter pipe without affecting the structural strength of the connection lock or causing material waste due to excessive clamping depth. The precise dimensional design of the liner 5, with its thickness equal to half the diameter difference between the larger and smaller diameter pipes, allows the four liners 5 to fit tightly against the smaller diameter pipe when connected, achieving stable and reliable clamping and ensuring the accuracy and stability of connecting pipes of different diameters.
[0045] In another preferred embodiment, the contour shape of the clamp 6 and the liner 5 after mating is circular, square, hexagonal, or octagonal; in this embodiment, it is a four-petaled petal shape. This diverse contour design allows the connecting yoke to adapt to the connection needs of pipes of different shapes, greatly expanding its application range. Whether it's a conventional circular pipe or a pipe of a special shape, a reliable connection can be achieved through this connecting yoke.
[0046] In another preferred embodiment, the left clamp 1 and right clamp 2 are thin-walled components with reinforcing ribs. On the one hand, the thin-walled design can effectively reduce the weight of the entire linkage lock, making it more convenient to handle and install; on the other hand, the reinforcing ribs ensure the strength and rigidity of the clamps, preventing them from easily deforming or being damaged when subjected to large external forces. While ensuring product performance, this achieves a lightweight design, meeting the dual requirements of lightweight and high strength in the modern exhibition and display industry and outdoor equipment field.
[0047] Although the present invention has been described in detail above with general descriptions and specific embodiments, some modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.
[0048] Any aspects of this utility model not described in detail are existing technology or common knowledge in the field.
Claims
1. A linking yoke, comprising a left clamp (1) and a right clamp (2), said left clamp (1) and right clamp (2) being fastened together by screws (3) and nuts (4), characterized in that, Clamping openings (6) corresponding to the half-width phase of the large-diameter pipe are respectively opened near the two ends of the left clamping body (1) and the right clamping body (2). The left clamping body (1) and the right clamping body (2) are suitable for clamping two large-diameter pipes in parallel after being put together. Through holes (9) for screws (3) to pass through are respectively opened in the middle of the left clamping body (1) and the right clamping body (2). Two opposing bushings (5) are installed or not installed in each clamping opening (6). The four bushings (5) are suitable for clamping small-diameter pipes after being put together.
2. A link yoke according to claim 1, characterized in that, Round-bottomed shaft grooves (7) are respectively opened on the left clamp (1) and right clamp (2) on both sides of the clamp (6); a hinge shaft (8) is fixed on the liner (5), and the hinge shaft (8) is rotatably connected to the round-bottomed shaft groove (7); a storage groove (10) is opened on the left clamp (1) and right clamp (2) on both sides of the through hole (9); when the liner (5) is not installed in the clamp (6), the liner (5) is flipped and placed into the storage groove (10).
3. A linking yoke according to claim 2, characterized in that, A semi-circular groove (11) is provided on the liner (5) opposite to the hinge shaft (8) to avoid the screw (3).
4. A link yoke according to claim 2, characterized in that, The free end of the hinge shaft (8) is provided with a ball head (12), and the side wall of the round bottom shaft groove (7) is provided with a ball socket (13). Through the ball head (12) and the ball socket (13), the liner (5) can be snapped onto the left clamp (1) or the right clamp (2) or pulled off the left clamp (1) or the right clamp (2).
5. A link yoke according to claim 1, characterized in that, A circular recess (14) is opened on the outside of the left clamp (1) corresponding to the through hole (9). One end of the screw (3) is fixed to a frustum (15). Part of the frustum (15) enters the circular recess (14). The inner end of the frustum (15) abuts against the bottom of the circular recess (14).
6. A link yoke according to claim 5, characterized in that, The outer end of the frustum (15) is fixed to a handwheel (16).
7. A link yoke according to claim 1, characterized in that, A hexagonal countersunk groove (17) is opened on the outside of the right clamp (2) corresponding to the through hole (9), and the nut (4) enters the hexagonal countersunk groove (17) and fits tightly.
8. A linking yoke according to claim 1, characterized in that, The depth of the clamp (6) is less than or equal to half the diameter of the large-diameter pipe, and the thickness of the liner (5) is equal to half the difference between the diameters of the large-diameter pipe and the small-diameter pipe.
9. A linking yoke according to claim 1, characterized in that, The outline shape of the clamp (6) and the liner (5) after they are joined is a circle, a square, a regular hexagon, a regular octagon or a petal shape.
10. A linking yoke according to claim 1, characterized in that, The left clamp (1) and right clamp (2) are thin-walled parts with reinforcing ribs.