Switchable buckle jewelry lock catch

Abstract

Provided is a buckle type jewelry lock catch. The lock catch includes a lock catch body, a buckle sleeve and a buckle. One end of the buckle sleeve is provided with a buckle sleeve matching surface, the other end of the buckle sleeve is provided with a buckle inlet, and an internal wall of the buckle sleeve is provided with lock pins; an external surface of the buckle is provided with U-shaped clamping grooves, a spring chamber is provided inside the buckle, and a spring is provided in the spring chamber; and a thimble of the spring is provided at one end of the buckle, and a connecting mechanism of a jewelry chain is provided at the other end of the buckle. The buckle type jewelry lock catch effectively combines firmness with beautiful appearance.

Claims

1. A switchable buckle jewelry lock catch, comprising a lock catch body, a buckle sleeve and a buckle; wherein one end of the buckle sleeve is provided with a buckle sleeve matching surface; the other end of the buckle sleeve is provided with a buckle inlet; an internal wall of the buckle sleeve is provided with lock pins; an external surface of the buckle is provided with clamping grooves; a spring chamber is provided inside the buckle; a spring is provided in the spring chamber; a thimble of the spring is provided at one end of the buckle; a connecting mechanism of a jewelry chain is provided at the other end of the buckle; the clamping grooves are U-shaped clamping grooves; each of the U-shaped clamping grooves is of a groove structure; the U-shaped clamping grooves are symmetrically distributed at two sides of the buckle; a straight-line distance between groove bottoms of the two U-shaped clamping grooves is less than a straight-line distance between the lock pins; and a width of the U-shaped clamping groove matches a diameter of each of the lock pins.

2. The switchable buckle jewelry lock catch according to claim 1, wherein a through hole is provided at each of two ends of the lock catch body; and the buckle sleeve is provided in the through hole.

3. The switchable buckle jewelry lock catch according to claim 1, wherein each of the buckle sleeve and the buckle is of a cylindrical structure; and an external diameter of the buckle is less than an internal opening diameter of the buckle sleeve and is greater than a straight-line distance between two lock pins.

4. The switchable buckle jewelry lock catch according to claim 1, wherein the buckle sleeve matching surface is provided with a buckle sleeve hole, and a size of the buckle sleeve hole is less than a size of the thimble of the spring.

5. The switchable buckle jewelry lock catch according to claim 1, wherein the lock pins are protruded from the internal wall of the buckle sleeve and are symmetrically provided at two sides of the internal wall.

6. The switchable buckle jewelry lock catch according to claim 1, wherein the U-shaped clamping groove is formed by communicating a long open end, a short closed end and a cambered surface travel groove, the long open end is of an open structure at one side of the buckle, the short closed end is of a closed structure on the buckle, and the long open end of the U-shaped clamping groove is communicated with the short closed end by the cambered surface travel groove.

7. The switchable buckle jewelry lock catch according to claim 1, wherein a lug boss is provided at one end of the spring chamber and a lug boss corner is provided at the other end of the spring chamber; and one side of the lug boss is connected to the thimble of the spring, and the other side of the lug boss is provided with a spring seat wherein the spring seat is matched with the spring.

8. The switchable buckle jewelry lock catch according to claim 1, wherein a lug boss corner is connected to a bead needle; and the bead needle is provided with a threading hole.

9. The switchable buckle jewelry lock catch according to claim 1, wherein a lug boss corner is connected to a chain bushing; and a cavity is provided in the chain bushing.

Description

DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is a schematic diagram of a structure of the present invention.

(2) FIG. 2 is a schematic diagram of a sectional structure of a lock catch body.

(3) FIG. 3 is a schematic diagram of an embodiment structure of a buckle and a connecting mechanism.

(4) FIG. 4 is a schematic diagram of a local structure of a buckle.

(5) FIG. 5a is a schematic diagram of a structure connected to a cotton rope in an embodiment of the present invention.

(6) FIG. 5b is a schematic diagram of a structure connected to a metal chain in an embodiment of the present invention.

(7) FIG. 5c is a schematic diagram of a structure connected to a leather rope in an embodiment of the present invention.

(8) FIG. 5d is a schematic diagram of a structure connected to a bead china in an embodiment of the present invention.

LEGENDS

(9) 1. lock catch body; 2. through hole; 3. buckle sleeve; 4. buckle; 5. external edge of buckle sleeve; 6. lock pin; 7. buckle inlet; 8. buckle sleeve matching surface; 9. U-shaped clamping groove; 10. thimble of the spring; 11. lug boss; 12. spring; 13. spring seat; 14. bead needle; 15. lug boss corner; 16. threading hole; 17. spring chamber; 18. cavity; 19 chain bushing; 20. buckle sleeve hole; 21. long open end; 22. short closed end; 23 cambered surface travel groove.

DETAILED DESCRIPTION

(10) The content the present invention will be further described in detail through specific embodiments in combination with the figures.

Embodiment 1

(11) As shown in FIGS. 1, 2 and 4, the lock catch comprises a lock catch body 1, a buckle sleeve 3 and a buckle 4, wherein both ends of the lock catch body 1 are respectively provided with a through hole 2, and the buckle sleeve 3 is connected in the through hole 2; one end of the buckle sleeve 3 is provided with a buckle sleeve matching surface 8, the buckle sleeve matching surface 8 is a fracture surface, the buckle sleeve matching surface is provided with a buckle sleeve hole 20, and the size of the buckle sleeve hole 20 is less than that of the thimble of the spring; the other end of the buckle sleeve 3 is provided with a buckle inlet 7, an internal wall of the buckle sleeve 3 is provided with lock pins 6, the lock pins 6 are cylindrically protruded from the internal wall of the buckle sleeve and are symmetrically provided at both sides of the internal wall; the buckle 4 is of a cylindrical structure, the external surface is provided with a pair of symmetrical U-shaped clamping grooves 9 of a groove structure, each U-shaped clamping groove 9 is formed by communicating a long open end 21, a short closed end 22 and a cambered surface travel groove 23, the long open end is of an open structure at one side of the buckle, the short closed end is of a closed structure on the buckle, the long open end of the U-shaped clamping groove is communicated with the short closed end by the cambered surface travel groove, the specification of the U-shaped clamping groove 9 matches that of the lock pin 6, and the external diameter of the buckle 4 is less than the internal opening diameter of the buckle sleeve and is greater than the straight-line distance between two lock pins. The straight-line distance between groove bottoms of the pair of symmetrical U-shaped clamping grooves 9 is less than that between the two lock pins. A spring chamber 17 is provided inside the buckle 4, a spring 12 is provided in the spring chamber 17, both ends of the spring chamber are respectively provided with a lug boss 11 and a lug boss corner 15, one side of the lug boss 11 is connected to a thimble 10 of the spring, the other side of the lug boss is provided with a spring seat 13, the spring seat 13 is connected to the spring 12, and the spring seat 13 plays a role of fixing the spring 12; and the other end of the buckle 4 is connected to a bead needle 14 by the lug boss corner 15, and the bead needle 14 is provided with a threading hole 16. The lug boss corner 15 and the bead needle 14 are connected to the buckle 4 by thread rotation, press fit or welding; when being applied to a bead-shaped jewelry chain, the bead needle 14 is adhered to jewelry beads by adhesive, and the beading thread passes through the threading hole 16 to connect other beads, to play a role of connecting the whole jewelry chain.

Embodiment 2

(12) As shown in FIG. 3 and FIG. 5a-5d, when the lock catch is applied to a metal chain, a thread rope chain or a leather rope chain, the lug boss corner 15 is connected to the chain bushing 19, a cavity 18 is provided in the chain bushing 19, the metal chain or leather thread rope is connected in the cavity 18 in the chain bushing 19 by welding or adhesion, to play a role of connecting the whole jewelry chain, thereby realizing various uses of the buckle type lock catch; other structures are the same as embodiment 1.

(13) If the buckle type lock catch is connected and used, when the buckle 4 is inserted in the buckle sleeve 3 through the buckle inlet 7, the lock pin 6 is required to be aligned with the long open end 21 of the U-shaped clamping groove 9, the buckle 4 and the buckle sleeve 3 oppositely move under hand push, and the lock pin 6 moves to the position connected to the cambered surface travel groove 23 from the groove at the long open end 21 of the U-shaped clamping groove 9. At this moment, the thimble 10 of the spring comes into contact with the buckle sleeve matching surface 8, and compresses the spring 12 under hand pressure. At this moment, the buckle 4 clockwise rotates, and the lock pin 6 slides to the position connected to the short closed end 22 of the U-shaped clamping groove 9 along the groove of the cambered surface travel groove 23. The handheld end of the buckle 4 is released, and then the spring 12 acts to push the lug boss 11 connected to the thimble of the spring 12, so that the lock pin 6 is locked in the groove at the short closed end 22, on the contrary, the lock catch may be opened by an operation.

(14) The above describes preferred embodiments and used technical principles of the present invention. Any equivalent transformation made on the basis of the technical solution of the present invention shall belong to the protection scope of the present invention.