connecting ring

Abstract

The utility model relates to a kind of connecting rings, including first petal body and second petal body, first petal body and the ring surface of second petal body is respectively provided with first installation plane and second installation plane, first installation plane and second installation plane are pasted, to make first petal body and the second petal body combination constitutes integral annular structure, fitting part is set between first installation plane and second installation plane, first installation plane and second installation plane are combined into one by fitting part, first installation hole and second installation hole are set on first petal body, first installation hole and second installation hole are respectively perpendicular to first installation plane and second installation plane, fixed screw respectively passes first installation hole and second installation hole, this connecting ring can eliminate the risk of stress concentration around through-hole, improve the anti-fracture capacity and structural stability. While realizing integral annular load-bearing structure, the double connection of fitting part and fixed screw ensures that petal body is combined tightly, adapts high-risk scene safety requirement.

Description

Technical Field

[0001] This utility model relates to the field of fire-fighting equipment technology, and in particular to a connecting ring. Background Technology

[0002] Connecting rings are core load-bearing connectors in high-risk scenarios such as outdoor climbing and fire rescue. They primarily enable detachable connections between ropes and hooks, and between ropes themselves. Their structural strength and safety are directly related to personnel safety. Furthermore, for personal outdoor and firefighting equipment, lightweight design is a key design indicator to reduce personnel fatigue under heavy loads. To balance lightweight design with basic load-bearing requirements, current personal connecting rings (such as those used by firefighters) are generally made of high-strength aluminum alloy. This material provides a lifting capacity that meets industry safety standards while controlling the overall product weight, making it the mainstream material choice for such connecting rings. In some existing technologies, some connecting rings are designed with an open structure: an opening is made in the ring body, and a reset part is assembled at one end of the opening by a hinge. A reset torsion spring is placed at the hinge, and the reset force of the torsion spring makes the free end of the reset part fit with the other end of the opening, so as to achieve the normal closure of the connecting ring; in order to further ensure the locking safety and prevent the reset part from being opened accidentally by external force, a through hole is provided through the ring body at the other end of the opening. The opening of the through hole passes through the end face of the other end of the opening, and a locking threaded hole is opened at the corresponding position on the end face of the reset part. A locking screw is inserted in the through hole. The screw and the threaded hole are threaded together to rigidly lock the reset part and the ring body, forming an absolutely locked state. However, the above-mentioned locking structure has significant safety hazards: when the connecting ring bears the load, its torque is mainly concentrated in the mating area between the reset part and the ring body opening, and this torque is eventually transmitted to the locking screw and the ring body through hole. Since the ring body through hole is a partially open structure, it destroys the overall mechanical continuity of the ring body, resulting in a stress concentration area around the through hole. When the load exceeds the design threshold or is subjected to alternating loads for a long time, the stress concentration area is prone to crack propagation, eventually causing the ring body to break, which seriously threatens the safety of use. Utility Model Content

[0003] The purpose of this utility model is to provide a connecting ring that addresses the safety hazards of ring body cracks and fractures caused by stress concentration zones around the through holes of the connecting ring, thereby improving the structural stability and fracture resistance of the connecting ring under rated lifting weight and alternating loads, increasing the strength of the connecting ring, and ensuring the safety of the connecting ring.

[0004] The technical solution adopted in this utility model is as follows: A connecting ring, comprising: The first petal body is generally annular, and a first mounting plane is provided on the annular surface of the first petal body; The second valve body is generally annular, and a second mounting plane is provided on the annular surface of the second valve body; The first mounting plane is in contact with the second mounting plane so that the first valve body and the second valve body are combined to form an integral ring structure; A fitting portion is disposed between the first mounting plane and the second mounting plane, wherein the first mounting plane and the second mounting plane are joined together by the fitting portion; A first mounting hole is provided on the first valve body, the first mounting hole being perpendicular to the first mounting plane and extending through the first valve body; A second mounting hole is provided on the second valve body corresponding to the position of the first mounting hole. The second mounting hole is perpendicular to the second mounting plane and extends through the second valve body. Fixing screws are passed through the first mounting hole and the second mounting hole respectively to connect the first valve body and the second valve body.

[0005] This utility model also has the following technical features: In one embodiment of the present invention, the first petal body is provided with a first opening, and a first engaging lug is provided at both ends of the first opening. A first mounting protrusion is provided at the middle position of the second mounting plane. When the first mounting plane and the second mounting plane are in contact, the first engaging lug at both ends of the first opening engages with the first mounting protrusion. The second petal body is provided with a second opening, and a second engaging lug is provided at both ends of the second opening. A second mounting protrusion is provided at the middle position of the first mounting plane. When the first mounting plane and the second mounting plane are in contact, the second engaging lug at the second opening end engages with the second mounting protrusion.

[0006] In one embodiment of the present invention, the first mounting hole is arranged through the first connecting lug and the second mounting protrusion, and the second mounting hole is arranged through the second connecting lug and the first mounting protrusion.

[0007] In one embodiment of this utility model, the first mounting hole on the first connecting lug and the second mounting hole on the second connecting lug are round holes, and the second mounting hole on the first mounting protrusion and the first mounting hole on the second mounting protrusion are threaded holes.

[0008] In one embodiment of this utility model, the other side of the first petal and the second petal are arc surfaces, the outer surfaces of the first mounting protrusion and the second mounting protrusion are arc-shaped, the outer surfaces of the first connecting lug and the second connecting lug are arc-shaped, and the outer surface of the overall ring formed by the combination of the first petal and the second petal is arc-shaped.

[0009] In one embodiment of the present invention, a first mating plane is provided at the positions where the first mounting protrusion and the first mating lug are mated, and a second mating plane is provided at the positions where the second mounting protrusion and the second mating lug are mated.

[0010] In one embodiment of the present invention, the fitting portion includes a protrusion and a groove, which are disposed between the first mounting plane and the second mounting plane.

[0011] In one embodiment of the present invention, the protrusions and grooves are spaced apart on the first mounting plane, and the protrusions and grooves are spaced apart on the second mounting plane.

[0012] In one embodiment of this utility model, the protrusion and groove are arc-shaped.

[0013] Compared with existing technologies, the beneficial effects of this utility model are reflected in the following: The design of forming an integral ring by fitting the first and second petals together, with the interlocking part connected to the fixing screw, replaces the existing ring-body opening locking structure. This avoids the opening disrupting the mechanical continuity of the ring body, allowing the torque to be evenly transmitted to the entire ring body when bearing a load, eliminating the risk of stress concentration around the through hole, and significantly improving the fracture resistance and structural stability under rated load and alternating loads. While achieving an integral ring-shaped load-bearing structure, the petal splitting design can meet the opening and closing requirements for rope or hook loading and unloading. The double connection between the interlocking part and the fixing screw ensures a tight fit between the petals, guaranteeing absolute locking performance, preventing accidental separation during use, and adapting to the safety requirements of high-risk scenarios. The petal splicing structure eliminates the need for additional heavy reinforcing components, allowing the continued use of high-strength aluminum alloy materials. It optimizes structural strength without adding extra weight, meeting the lightweight and portability requirements of personal outdoor and fire-fighting equipment. Attached Figure Description

[0014] Figure 1 and Figure 2 These are schematic diagrams of the connecting ring from two different perspectives in one embodiment of this utility model; Figure 3 and Figure 4 These are two planar schematic diagrams of the connecting ring in one embodiment of this utility model; Figure 5 This is an exploded view of the connecting ring assembly in one embodiment of the present invention; Figure 6 This is a schematic diagram of the second lobe structure of the connecting ring in one embodiment of the present invention; Figure 7 This is a schematic diagram of the first petal structure of the connecting ring in one embodiment of the present invention. Detailed Implementation

[0015] The following specific examples 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. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model.

[0016] It should be noted that the illustrations provided in this embodiment are only schematic representations of the basic concept of this utility model. Therefore, the drawings only show the components related to this utility model and are not drawn according to the actual number, shape and size of the components. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0017] To address the problems of existing connecting rings, this utility model proposes a connecting ring comprising: a first petal 10, which is generally annular, with a first mounting plane 11 provided on the annular surface of the first petal 10; a second petal 20, which is generally annular, with a second mounting plane 21 provided on the annular surface of the second petal 20; the first mounting plane 11 and the second mounting plane 21 are fitted together to form an integral annular structure; and an interlocking portion is disposed between the first mounting plane 11 and the second mounting plane 21. The first valve body 10 is integrated with the second mounting plane 21 through the fitting part; a first mounting hole 12 is provided on the first valve body 10, the first mounting hole 12 is perpendicular to the first mounting plane 11 and passes through the first valve body 10; a second mounting hole 22 is provided on the second valve body 20 corresponding to the position of the first mounting hole 12, the second mounting hole 22 is perpendicular to the second mounting plane 21 and passes through the second valve body 20; a fixing screw 30 passes through the first mounting hole 12 and the second mounting hole 22 respectively to realize the connection between the first valve body 10 and the second valve body 20.

[0018] In one embodiment, for ease of distinction, the outer surface of the first petal 10 in the figure is shaded, while the second petal 20 is not shaded. The first petal 10 and the second petal 20 have the same structural design. Both the first petal 10 and the second petal 20 are made of aluminum alloy. The first petal 10 and the second petal 20 are fitted together through the first mounting plane 11 and the second mounting plane 21 to form a complete connecting ring. There is no problem of opening in the ring body in the direction of force. Therefore, in actual use, the connecting ring can significantly enhance the strength of the entire connecting ring, avoid the mechanical continuity of the ring body due to opening in the direction of force, and the torque can be evenly transmitted to the entire ring body when bearing the load. This eliminates the risk of stress concentration around the through hole and significantly improves the fracture resistance and structural stability under rated load and alternating load.

[0019] In one embodiment, see Figure 5 The first mounting plane 11 and the second mounting plane 21 are joined together by the fitting part, so that the first petal 10 and the second petal 20 can form a whole, ensuring that the first petal 10 and the second petal 20 are tightly joined, guaranteeing absolute locking performance, preventing accidental separation during use, and adapting to the safety requirements of high-risk scenarios.

[0020] In one embodiment, the first mounting hole 12 and the second mounting hole 22 are respectively provided on the first petal 10 and the second petal 20, and the first mounting hole 12 and the second mounting hole 22 are perpendicular to the ring surface of the connecting ring, so as to realize the connection between the first petal 10 and the second petal 20. The fixing screw 30 is not used as a load-bearing component, but only used to fix the first petal 10 and the second petal 20. Therefore, the problem of damaging the mechanical continuity of the connecting ring body caused by the opening can be eliminated.

[0021] In one embodiment, to ensure that the first valve body 10 and the second valve body 20 are fitted together, the first valve body 10 is provided with a first opening 13, and first engaging lugs 14 are provided at both ends of the first opening 13. A first mounting protrusion 23 is provided at the middle position of the second mounting plane 21. When the first mounting plane 11 and the second mounting plane 21 are in contact, the first engaging lugs 14 at both ends of the first opening 13 are engaged with the first mounting protrusion 23. The second valve body 20 is provided with a second opening 24, and second engaging lugs 25 are provided at both ends of the second opening 24. A second mounting protrusion 15 is provided at the middle position of the first mounting plane 11. When the first mounting plane 11 and the second mounting plane 21 are in contact, the second engaging lug 25 at the end of the second opening 24 is engaged with the second mounting protrusion 15.

[0022] In the above embodiment, the first engaging lugs 14 at both ends of the first opening 13 engage with the first mounting protrusions 23 of the second petal 20, and the second engaging lugs 25 at both ends of the second opening 24 engage with the second mounting protrusions 15 of the first petal 10, forming a lug-protrusion fitting support structure. This structure can further disperse the local torque generated by the load of the connecting ring from the contact surfaces of the fixing screw 30, the first petal 10, and the second petal 20 to the contact area of ​​the lugs and protrusions, avoiding stress concentration at a single connection point. See reference [link to relevant documentation]. Figure 3 and Figure 4 The torque F in the middle is located at the point where the force is applied to the connecting ring; at the same time, the cooperation between the opening and the protrusion fills the mechanically weak area where the first petal 10 and the second petal 20 are spliced, making the load-bearing of the overall ring structure more uniform and further improving the fracture resistance.

[0023] Furthermore, the engagement of the aforementioned lugs and protrusions with the fixing screw 30 forms a double-locking structure. The protrusions can restrict the lateral displacement of the lugs, preventing relative sliding when the first petal 10 and the second petal 20 are pulled by external forces, and avoiding thread wear or breakage caused by the fixing screw 30 being subjected to force alone. The double locking ensures that the first petal 10 and the second petal 20 are tightly joined, so that the first petal 10 and the second petal 20 form a smooth external whole, completely eliminating the risk of accidental separation caused by loose connection during use, and further adapting to the safety requirements of high-risk scenarios such as outdoor and fire fighting.

[0024] In one embodiment, see Figure 5 and Figure 6 The first mounting hole 12 is arranged through the first connecting lug 14 and the second mounting protrusion 15, and the second mounting hole 22 is arranged through the second connecting lug 25 and the first mounting protrusion 23.

[0025] In the above embodiments, see Figure 5 and Figure 7 The first mounting hole 12 penetrates the first connecting lug 14 and the second mounting protrusion 15, and the second mounting hole 22 penetrates the second connecting lug 25 and the first mounting protrusion 23, so that the fixing screw 30 directly locks the lug and the protrusion into a rigid whole while connecting the first petal body 10 and the second petal body 20. This structure allows the local torque generated by the load to be directly distributed to the solid area of ​​the lug and the protrusion through the closed-loop transmission path formed by the lug, screw and protrusion, avoiding the torque concentration in the screw or the gap of the mating surface, greatly improving the tensile and shear resistance of the lug and the protrusion mating area, and further reducing the risk of breakage.

[0026] Furthermore, the design of the mounting hole penetrating both the lug and the protrusion allows the lug and protrusion to be tightly pressed together by the tightening force of the fixing screw 30, completely eliminating any tiny gaps that may exist when they are fitted together. This not only avoids the flap from shaking due to gaps during use, but also ensures the centerness and symmetry of the overall ring structure, preventing uneven stress caused by structural misalignment and ensuring the stability of the connecting ring under load.

[0027] Specifically, the first mounting hole 12 on the first connecting lug 14 and the second mounting hole 22 on the second connecting lug 25 are round holes, and the second mounting hole 22 on the first mounting protrusion 23 and the first mounting hole 12 on the second mounting protrusion 15 are threaded holes.

[0028] See Figure 5 During actual installation, the first mounting plane 11 of the first valve body 10 and the second mounting plane 21 of the second valve body 20 are fitted together, and the first connecting lug 14 is fitted together with the first mounting protrusion 23, and the second connecting lug 25 is fitted together with the second mounting protrusion 15. The first valve body 10 and the second valve body 20 are fixed by screwing the fixing screw 30 into the first mounting hole 12 of the first connecting lug 14 and threading one end to the second mounting hole 22 on the first mounting protrusion 23, and by screwing the fixing screw 30 into the second connecting lug 25 of the second connecting lug 25 and threading one end to the first mounting hole 12 of the first mounting protrusion 23.

[0029] In one embodiment, the other side of the first valve body 10 and the second valve body 20 is an arc surface, the outer surfaces of the first mounting protrusion 23 and the second mounting protrusion 15 are arc-shaped, the outer surfaces of the first connecting lug 14 and the second connecting lug 25 are arc-shaped, and the outer surface of the integral ring formed by the first valve body 10 and the second valve body 20 is arc-shaped. (See also...) Figure 1 and Figure 2 As shown.

[0030] In one embodiment, see Figure 5 and Figure 7 The first mounting protrusion 23 has a first mating plane 231 at both ends where it meets the first mating lug 14, and the second mounting protrusion 15 has a second mating plane 151 at both ends where it meets the second mating lug 25.

[0031] In one embodiment, see Figure 5 and Figure 7 The fitting portion includes a protrusion 41 and a groove 42, which are disposed between the first mounting plane 11 and the second mounting plane 21.

[0032] In one embodiment, the protrusions 41 and grooves 42 are spaced apart on the first mounting plane 11, and the protrusions 41 and grooves 42 are spaced apart on the second mounting plane 21.

[0033] In one embodiment, the protrusion 41 and the groove 42 are arc-shaped.

[0034] In one embodiment, a set of protrusions 41 and grooves 42 are respectively provided on the first mounting plane 11 and the second mounting plane 21.

[0035] In one embodiment, the inner and outer diameters of the connecting ring formed by the first valve body 10 and the second valve body 20 can be varied. Depending on the actual use, different inner and outer diameters of the connecting ring can be formed. The inner diameter of the connecting ring can be 36.5mm, 45mm, 65mm, etc., and the outer diameter of the connecting ring can be 62.5mm, 71mm, 91mm, etc.

[0036] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0037] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A connecting ring, characterized in that, include: The first valve body (10) is generally annular, and a first mounting plane (11) is provided on the annular surface of the first valve body (10). The second valve body (20) is generally annular, and a second mounting plane (21) is provided on the annular surface of the second valve body (20). The first mounting plane (11) fits against the second mounting plane (21) so that the first valve body (10) and the second valve body (20) combine to form an integral annular structure; A fitting part is disposed between the first mounting plane (11) and the second mounting plane (21), and the first mounting plane (11) and the second mounting plane (21) are joined together by the fitting part; A first mounting hole (12) is provided on the first valve body (10), the first mounting hole (12) is perpendicular to the first mounting plane (11) and extends through the first valve body (10); A second mounting hole (22) is provided on the second valve body (20) at the position corresponding to the first mounting hole (12). The second mounting hole (22) is perpendicular to the second mounting plane (21) and extends through the second valve body (20). Fixing screws (30) pass through the first mounting hole (12) and the second mounting hole (22) respectively to connect the first valve body (10) and the second valve body (20).

2. The connecting ring according to claim 1, characterized in that, The first petal body (10) is provided with a first opening (13), and a first engaging lug (14) is provided at both ends of the first opening (13). A first mounting protrusion (23) is provided at the middle position of the second mounting plane (21). When the first mounting plane (11) and the second mounting plane (21) are in contact, the first engaging lug (14) at both ends of the first opening (13) engages with the first mounting protrusion (23). The second petal (20) is provided with a second opening (24), and a second connecting lug (25) is provided at both ends of the second opening (24). A second mounting protrusion (15) is provided at the middle position of the first mounting plane (11). When the first mounting plane (11) and the second mounting plane (21) are in contact, the second connecting lug (25) at the end of the second opening (24) is connected with the second mounting protrusion (15).

3. The connecting ring according to claim 2, characterized in that, The first mounting hole (12) is arranged through the first connecting lug (14) and the second mounting protrusion (15), and the second mounting hole (22) is arranged through the second connecting lug (25) and the first mounting protrusion (23).

4. The connecting ring according to claim 2, characterized in that, The first mounting hole (12) on the first connecting lug (14) and the second mounting hole (22) on the second connecting lug (25) are round holes, and the second mounting hole (22) on the first mounting protrusion (23) and the first mounting hole (12) on the second mounting protrusion (15) are threaded holes.

5. The connecting ring according to claim 2, characterized in that, The other side of the first valve body (10) and the second valve body (20) is an arc surface, the outer surface of the first mounting protrusion (23) and the second mounting protrusion (15) is arc-shaped, the outer surface of the first connecting lug (14) and the second connecting lug (25) is arc-shaped, and the outer surface of the overall ring formed by the combination of the first valve body (10) and the second valve body (20) is arc-shaped.

6. The connecting ring according to claim 2, characterized in that, The first mounting protrusion (23) has a first mating plane (231) at the position where it meets the first mating lug (14), and the second mounting protrusion (15) has a second mating plane (151) at the position where it meets the second mating lug (25).

7. The connecting ring according to claim 1, characterized in that, The fitting portion includes a protrusion (41) and a groove (42), which are disposed between the first mounting plane (11) and the second mounting plane (21).

8. The connecting ring according to claim 7, characterized in that, The protrusions (41) and grooves (42) are spaced apart on the first mounting plane (11), and the protrusions (41) and grooves (42) are spaced apart on the second mounting plane (21).

9. The connecting ring according to claim 8, characterized in that, The protrusion (41) and groove (42) are arc-shaped.

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