Safety quick fastener with limiting structure

Abstract

A safety quick fastener with a limiting structure comprises a main lock buckle and a secondary lock buckle which correspond to each other up and down and are movably connected at one end by a rotating shaft, a water outlet pipe buckle groove is arranged between the main lock buckle and the secondary lock buckle, a square tube through groove is arranged at the bottom of the main lock buckle, and a locking mechanism with a limiting structure is arranged at the other end of the main lock buckle and the secondary lock buckle, and the locking mechanism with a limiting structure comprises a lever buckle, which is movably connected to the other end of the secondary lock buckle through a rotating pin, a locking ring is connected to the lever buckle, a locking reverse buckle is arranged on the other end of the main lock buckle, the locking ring is sleeved and matched with the locking reverse buckle, a retaining spring is arranged on the secondary lock buckle, a connecting pressure seat is also arranged on the lever buckle, a limiting slot is arranged on the connecting pressure seat, during the locking process, the connecting pressure seat presses the retaining spring, and after the locking is completed, the retaining spring is clamped into the limiting slot.

Description

Technical Field

[0001] The utility model relates to a safety fastener with a limiting structure, which is mainly used for fixing a sprinkler head of a fire-fighting corrugated pipeline and belongs to the field of fasteners. Background Art

[0002] During the laying of fire-fighting pipelines, quick fasteners are required to quickly fix the sprinkler head (water outlet pipe). Patent publication number CN205323073 U discloses a "sprinkler head positioning fastener for fire-fighting corrugated pipelines", including a main lock buckle and a secondary lock buckle, wherein the main lock buckle includes two folded buckle plates with positioning grooves, a square tube through groove is arranged between the bottoms of the two buckle plates, one end of the two buckle plates is connected to the secondary lock buckle by a first rotating pin shaft, the secondary lock buckle corresponds to the main lock buckle, and has a notch corresponding to the positioning groove, and the secondary lock buckle contacts the top surface of the other end of the two buckle plates when buckled down, and the other end of the two buckle plates is connected to the locking buckle by a second rotating pin shaft, a locking nut is arranged on the locking buckle, and the locking buckle is buckled on the secondary lock buckle after rotation, and the locking nut is screwed to tighten the secondary lock buckle. The disadvantage is that when using it, the secondary lock buckle is first buckled on the main lock buckle, then the locking buckle is turned, the locking buckle is buckled on the secondary lock buckle, and then the locking nut is twisted to tighten the locking nut on the secondary lock buckle. The operation steps are many, the speed is slow, and the locking is troublesome. In particular, there is no limit structure on the locking nut, which is easy to loosen, causing the locking buckle to fall off, thereby causing the sprinkler head outlet pipe to fall off. Summary of the invention

[0003] The purpose of the utility model is to provide a safety quick fastener with a safety structure in view of the deficiencies in the prior art.

[0004] To this end, the above-mentioned purpose of the utility model is achieved through the following technical solutions:

[0005] A safety quick fastener with a limiting structure comprises a main lock buckle and a secondary lock buckle corresponding to each other up and down and movably connected at one end by a rotating shaft, a water outlet pipe buckle groove is arranged between the main lock buckle and the secondary lock buckle, a square tube through groove is arranged at the bottom of the main lock buckle, and a locking mechanism with a limiting structure is arranged at the other end of the main lock buckle and the secondary lock buckle, and the locking mechanism with a limiting structure comprises a lever buckle, which is movably connected to the other end of the secondary lock buckle through a rotating pin, a locking ring is connected to the lever buckle, a locking reverse buckle is arranged at the other end of the main lock buckle, the locking ring is sleeved and matched with the locking reverse buckle, a retaining spring is arranged on the secondary lock buckle, a connecting pressure seat is also arranged on the lever buckle, and a limiting slot is arranged on the connecting pressure seat. During the locking process, the connecting pressure seat presses the retaining spring, and after the locking is completed, the retaining spring is clamped into the limiting slot.

[0006] Furthermore, a retaining spring installation groove is provided on the secondary lock buckle, and the retaining spring is formed by bending a steel wire and is stuck in the retaining spring installation groove. One end of the steel wire extends out of the retaining spring installation groove and cooperates with the connecting pressure seat and the limit slot, and the head is bent into a circular ring shape.

[0007] Furthermore, a pin hole is provided on the connecting pressure seat, and the rotating pin is movably connected to the other end of the auxiliary lock buckle through the pin hole.

[0008] Furthermore, a locking groove is provided on the pull buckle, and the locking ring is connected in the locking groove.

[0009] Furthermore, the main lock buckle and the auxiliary lock buckle are respectively formed by integrally stamping channel steel.

[0010] The utility model discloses a safety quick fastener with a limiting structure. When in use, the auxiliary lock buckle is first opened from the main lock buckle, and then the square tube bracket of the fire-fighting pipeline is installed in the square tube through groove, and then the water outlet pipe of the sprinkler head is installed in the water outlet pipe buckle groove, and finally the auxiliary lock buckle is closed, the locking ring is sleeved onto the locking inverted buckle, and then the pull buckle is manually turned, the pull buckle rotates, thereby tightening the locking ring, and during the rotation process of the pull buckle, the connecting pressure seat is driven to compress the retaining spring, and the retaining spring is deformed. When the pull buckle is rotated to a certain position (or when the locking ring is tightened), the retaining spring is clamped into the limiting clamping groove, and the installation is completed. Its advantages are: 1. easy installation, fast speed and reliable locking; 2. after the retaining spring is inserted into the limiting slot, it plays a limiting role and the lever cannot be moved. When the fastener needs to be opened again, it is necessary to first press the retaining spring by hand to make the retaining spring withdraw from the limiting slot before the lever can be moved to open the secondary lock. Therefore, the locking mechanism with a limiting structure of this scheme is very reliable in locking and the accident of the lock falling off will not occur. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the structure of the safety quick fastener with a limiting structure of the utility model;

[0012] Figure 2 It is a schematic diagram of the limiting structure of the utility model;

[0013] Figure 3 It is a schematic diagram of the retaining spring of the utility model;

[0014] Figure 4 It is a schematic diagram of the use status of the safety quick fastener of the utility model. DETAILED DESCRIPTION

[0015] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0016] The utility model relates to a safety quick fastener with a limiting structure, such as Figure 1 — Figure 4As shown, it includes a main lock buckle 1 and a secondary lock buckle 2 which correspond to each other up and down and are movably connected at one end by a rotating shaft 5. A water outlet pipe buckle groove 3 is arranged between the main lock buckle 1 and the secondary lock buckle 2. A square tube through groove 4 is arranged at the bottom of the main lock buckle 1. The other ends of the main lock buckle 1 and the secondary lock buckle 2 are provided with a locking mechanism with a limiting structure. The locking mechanism with a limiting structure includes a pull buckle 6, which is movably connected to the other end of the secondary lock buckle 2 through a rotating pin 7. A locking ring 8 is connected to the pull buckle 6. A locking inverted buckle 9 is arranged on the other end of the main lock buckle 1. The locking ring 8 is sleeved and matched with the locking inverted buckle 9. A retaining spring 10 is arranged on the secondary lock buckle 2. A connecting pressure seat 11 is also arranged on the pull buckle 6. A limiting slot 12 is arranged on the connecting pressure seat. During the locking process, the connecting pressure seat 11 presses the retaining spring 10. After the locking is completed, the retaining spring 10 is inserted into the limiting slot 12.

[0017] When in use, first open the secondary lock buckle 2 from the main lock buckle 1, then install the square tube bracket 01 of the fire-fighting pipeline in the square tube groove 4, and then install the water outlet pipe 02 of the sprinkler head in the water outlet pipe buckle groove 3, and finally close the secondary lock buckle 2, put the locking ring 8 on the locking inverted buckle 9, and then turn the pull buckle 6 by hand, and the pull buckle rotates, thereby tightening the locking ring 8. During the rotation of the pull buckle, the connecting pressure seat 11 is driven to compress the retaining spring 10, and the retaining spring is deformed. When the pull buckle is rotated to a certain position (or when the locking ring 8 is tightened), the retaining spring 10 is inserted into the limit slot 12, and the installation is completed. Its advantages are: 1. easy installation, fast speed and reliable locking; 2. after the retaining spring is inserted into the limiting slot, it plays a limiting role and the lever cannot be moved. When the fastener needs to be opened again, it is necessary to first press the retaining spring by hand to make the retaining spring withdraw from the limiting slot before the lever can be moved to open the secondary lock. Therefore, the locking mechanism with a limiting structure of this scheme is very reliable in locking and the accident of the lock falling off will not occur.

[0018] Furthermore, a retaining spring installation groove 13 is provided on the secondary lock buckle 2, and the retaining spring 10 is formed by bending a steel wire and is stuck in the retaining spring installation groove 13. One end of the steel wire extends out of the retaining spring installation groove 13 and cooperates with the connecting pressure seat 11 and the limiting slot 12, and the head is bent into a circular ring shape 15. The steel wire has certain strength and elasticity and can be inserted in the retaining spring installation groove, which is easy to install. The head is bent into a circular ring shape, which is convenient for pressing the finger on the circular ring when exiting the limiting slot, and is easy to use.

[0019] Furthermore, a pin hole 17 is provided on the connecting pressure seat 11, and the rotating pin 7 is movably connected to the other end of the auxiliary lock buckle 2 through the pin hole 17, so the connection is convenient.

[0020] Furthermore, a locking groove 16 is provided on the pull buckle 6, and the locking ring 8 is connected in the locking groove 16. With the locking groove, the locking ring is easy to connect and will not fall off.

[0021] Furthermore, the main lock buckle 1 and the auxiliary lock buckle 2 are respectively formed by integrally stamping channel steel, and the integrally formed molding is convenient to process and has good strength.

Claims

1. A safety fastener with a limiting structure, comprising a main lock buckle (1) and a secondary lock buckle (2) corresponding to each other at the top and bottom and movably connected at one end by a rotating shaft (5), a water outlet pipe buckle groove (3) is arranged between the main lock buckle (1) and the secondary lock buckle (2), a square pipe through groove (4) is arranged at the bottom of the main lock buckle (1), and a locking mechanism with a limiting structure is arranged at the other end of the main lock buckle (1) and the secondary lock buckle (2), characterized in that: The locking mechanism with a limiting structure comprises a pull buckle (6), the pull buckle (6) is movably connected to the other end of the auxiliary lock buckle (2) through a rotating pin (7), the pull buckle (6) is connected to a locking ring (8), a locking undercut (9) is arranged on the other end of the main lock buckle (1), the locking ring (8) and the locking undercut (9) are sleeved and matched, a retaining spring (10) is arranged on the auxiliary lock buckle (2), a connecting pressure seat (11) is also arranged on the pull buckle (6), and a limiting groove (12) is arranged on the connecting pressure seat. During the locking process, the connecting pressure seat (11) presses the retaining spring (10), and after the locking is completed, the retaining spring (10) is snapped into the limiting groove (12).

2. The safety quick fastener with a limiting structure according to claim 1, characterized in that The secondary lock buckle (2) is provided with a retaining spring installation groove (13). The retaining spring (10) is formed by bending a steel wire and is clamped in the retaining spring installation groove (13). One end of the steel wire extends out of the retaining spring installation groove (13) and cooperates with the connecting pressure seat (11) and the limit clamping groove (12), and the head is bent into a circular ring shape (15).

3. The safety quick fastener with a limiting structure according to claim 1, characterized in that The connecting press seat (11) is provided with a pin hole (17), and the rotating pin (7) is movably connected to the other end of the auxiliary lock buckle (2) through the pin hole (17).

4. The safety quick fastener with a limiting structure according to claim 1, characterized in that The pull buckle (6) is provided with a locking groove (16), and the locking ring (8) is connected to the locking groove (16).

5. The safety quick fastener with a limiting structure according to claim 1, characterized in that The main lock buckle (1) and the auxiliary lock buckle (2) are respectively formed by integrally stamping channel steel.

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