Precise lock catch assembly structure

Abstract

A precise lock catch assembling structure comprises a lock catch body, a bolt head and a lock cylinder body, the lock cylinder body comprises a lock cylinder shell, a rotating shaft, a rotating shaft sleeve shell, a transmission assembly, an eccentric wheel shaft, an eccentric wheel sleeve piece, a spring bolt and a shell cover, the shell cover and the lock cylinder shell are buckled, one end of the rotating shaft is arranged outside the lock cylinder shell, and the other end of the rotating shaft is arranged outside the lock cylinder shell. The part, inserted into the lock cylinder shell, of the rotating shaft is movably assembled with the rotating shaft sleeve shell, transmission assemblies are sequentially assembled on the rotating shaft sleeve shell and drive the eccentric wheel shaft, the eccentric wheel shaft and the eccentric wheel shaft sleeve piece drive the spring bolt in a transmission mode, and the spring bolt is driven to stretch, retract, switch and move. The precise lock catch assembly structure is applied to a precious jewelry rope chain or a ring and is specially designed, on the basis of a precise matching structure and simple operation, the safety and reliability of connection and fastening are ensured, the product quality and the use experience feeling are improved, meanwhile, the lock catch part serves as a single accessory, and the cost is reduced. Products can be upgraded and exchanged, and the added value of the products is improved.

Description

Technical Field

Background Art

[0003] For ornaments such as hand ropes, bracelets, and necklaces, there are fixed connection structure styles that are not detachable as a whole, and there are also styles that are opened and closed through movable clasps to complete wearing. The earliest lobster clasp connection method, and with the development of precision hardware processing or precious metal processing technology, various different forms of clasp structures have gradually emerged, including plug-in clasps, rotary lock clasps, press-in plug clasps, etc. Different connection devices with structures and cooperation methods. Considering the current technical process requirements, since the structures used on jewelry need to be small in size and have high reliability requirements, the structural design is relatively difficult. Moreover, since the clasps used on jewelry are high-frequency opening and closing accessories, there are also many related requirements for their fatigue limit and ease of wearing.

[0004] Currently, the common clasps on the market have simple structures. For example, the snap-fastener structure will cause the snap position to become loose after repeated snapping open, resulting in the risk of accidental loosening and falling. There is also the magnetic snap, which may be accidentally hooked in life and cause the adsorbed part to be opened by an external force. There is still a problem of insufficient safety factor. For example, in the patent CN202111370208.9 T-shaped wedge spring button jewelry clasp, it is disclosed that the present invention uses a T-shaped wedge structure to limit the button, making the button move more smoothly up and down without the problem of button shaking; whether to lock is controlled by an elastic member, which is prone to elastic fatigue and failure caused by aging. For example, in the patent CN201910130218.1 a jewelry snap structure and a jewelry production process, a magnetic snap structure is disclosed, and the locking process is carried out by the mutual attraction of a first magnet and a second magnet. The problems are that the magnetism of the magnetic snap is easily demagnetized, and it is easy to be accidentally touched and opened, so its reliability requirements have not fully achieved the expected effect.

[0005] In addition, the current conventional clasp structures are all fixedly assembled to the jewelry piece. If there is wear and aging, it is not convenient to replace and change, and there are fixed ends, so the adaptability and versatility are relatively general.

[0006] There is an urgent need to propose a buckle structure that improves the connection reliability and safety of the overall product. At the same time, the connection structure of the buckle needs to further improve precision to ensure precise fit and stable and safe opening and closing. The mutual and universal nature also needs to be considered to facilitate interchange and upgrade replacement to enhance the user experience.

Summary of the Invention

[0008] A precision buckle assembly structure includes a buckle body, a plug head, and a lock core body. One end face of the buckle body is provided with a slot for inserting the plug head, and a lock core body accommodating position is provided perpendicular to the slot direction, in which a lock core body is provided. The lock core body includes a lock core outer shell, a rotating shaft, a rotating shaft sleeve, a transmission component, an eccentric wheel shaft, an eccentric wheel shaft kit, a lock tongue, and a shell cover. The shell cover and the lock core outer shell are buckled. One end of the rotating shaft remains outside the lock core outer shell, and the part of the rotating shaft inserted into the lock core outer shell is movably assembled with the rotating shaft sleeve. The transmission component is sequentially assembled on the rotating shaft sleeve. The transmission component is sleeved on the eccentric wheel shaft and drives the eccentric wheel shaft, and the eccentric wheel shaft drives the lock tongue through the eccentric wheel shaft kit. The lock tongue corresponds to the lock tongue slot on the lock core outer shell, and the lock tongue is driven to switch and move between extending out of the lock tongue slot and retracting into the lock tongue slot.

[0009] The end of the rotating shaft is also provided with a rotating handle, which has anti-slip protrusions, and the radius of the rotating handle part is greater than the shaft diameter of the rotating shaft and greater than the aperture of the rotating shaft hole on the lock core outer shell.

[0010] Two positioning pieces are provided on the rotating shaft, namely a first positioning piece and a second positioning piece. The first / second positioning piece is pressed into the positioning piece groove on the rotating shaft by a spring, and the rotating shaft is clamped in the rotating shaft sleeve through the first / second positioning piece. First positioning card slots and second positioning card slots are provided on the inner wall of the rotating shaft sleeve. The first positioning card slot corresponds to and limits the first positioning piece, and the second positioning card slot corresponds to and limits the second positioning piece.

[0011] A longitudinal limiting chute is also provided on the inner wall of the rotating shaft sleeve. A fixed-point convex column is provided corresponding to the rotating shaft. When the positioning convex column is stuck in the longitudinal limiting chute, the rotating shaft sleeve limits the circumferential rotation freedom of the rotating shaft. When the rotating shaft is pushed towards the rotating shaft sleeve, after the positioning convex column slides out of the longitudinal limiting chute, the rotating shaft has a 360° rotation freedom in the circumferential direction.

[0012] When the rotating shaft is at the position farthest from the rotating shaft sleeve housing, the transmission assembly and the eccentric wheel shaft are disengaged and not in contact with each other. When the rotating shaft is pushed to the position closest to the rotating shaft sleeve housing, the transmission assembly and the eccentric wheel shaft are engaged and enter the transmission assembly state.

[0013] One end of the transmission assembly is connected to the transmission shaft sleeve housing, and the other end has a transmission assembly structure. The corresponding eccentric wheel shaft has a wedging end. When the wedging end of the eccentric wheel shaft is snapped into the transmission assembly structure, the eccentric wheel shaft is driven by the transmission assembly.

[0014] The transmission assembly structure of the transmission assembly is a plum blossom inner ring, a hexagonal inner ring or a rectangular inner ring, and the wedging end of the eccentric wheel shaft is a plum blossom handle, a hexagonal handle or a rectangular handle.

[0015] The eccentric wheel shaft kit is connected to the locking tongue through a fixing pin. A clamping end is provided on one side of the eccentric wheel shaft kit close to the locking tongue. The fixing pin is snapped into the middle of the clamping end, and the locking tongue is fixedly connected to the middle of the clamping end through the fixing pin.

[0016] The precision lock assembly structure involved in the present invention is specially designed for application on precious jewelry ropes or rings. Through a precise matching structure, on the basis of simple operation, it ensures the safety and reliability of the connection and fastening, improves the quality and use experience of the product. At the same time, the lock part is used as a single-piece accessory, which can be used for product upgrading, interchange, and enhancing its added value.

Description of the Drawings

Detailed Embodiments

[0019] In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more. In addition, the term "comprising" and any variations thereof are intended to cover non-exclusive inclusion.

[0020] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "mounted", "connected", and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] The present invention will be further described below with reference to the accompanying drawings and preferred embodiments.

[0022] Please refer to the attached Figure 1 , which shows a precision buckle assembly structure. The precision buckle assembly structure can be provided at two connecting ends of a rope chain, or can be provided between two connecting ends of a bracelet, a bracelet, or a necklace to complete the actions of buckling connection and opening.

[0023] The precision buckle assembly structure includes a buckle body 100, a plug head 200, and a lock core body 300. The buckle body 100 is used to accommodate the lock core body 300 and a paired plug head 200. If the precision buckle assembly structure is applied to a bracelet, the buckle body can be designed to be integrated with the bracelet body.

[0024] The lock core body 300 is arranged on the buckle body 100, and the plug head 200 is arranged at the other end to be connected. One end face of the buckle body is provided with a slot 101 for inserting the plug head 200, and a lock core body accommodating position 102 is provided in a direction perpendicular to the slot 101, and the lock core body 300 is arranged therein.

[0025] Please refer to the attached Figure 2 , which shows in detail the structure of the lock core body 300. The lock core body 300 includes a lock core housing 10, a rotating shaft 30, a rotating shaft sleeve housing 40, a transmission assembly 50, an eccentric wheel shaft 60, an eccentric wheel shaft kit 70, a lock tongue 80, and a housing cover 20. The housing cover 20 and the lock core housing 10 are snapped together to form an integral unit that houses all the transmission parts.

[0026] One end of the rotating shaft 30 remains outside the lock core housing 10, and the part of the rotating shaft that is placed in the lock core housing 10 also needs to be outside the lock catch body 100, which is a part that can be operated by hand. The part of the rotating shaft 30 inserted into the lock core housing 10 is movably assembled with the rotating shaft sleeve housing 40. The transmission assembly 50 is sequentially assembled on the rotating shaft sleeve housing 40. The transmission assembly 50 is sleeved on the eccentric wheel shaft 60 and drives the eccentric wheel shaft 60. The eccentric wheel shaft 60 drives the lock tongue 80 through the eccentric wheel shaft kit 70. The lock tongue 80 corresponds to the lock tongue notch 81 on the lock core housing. The lock tongue 80 is driven to switch between extending out of the lock tongue notch and retracting into the lock tongue notch.

[0027] Please refer to the attached Figure 3 , which shows that the end of the rotating shaft 30 is also provided with a rotating handle 31. There are anti-slip protrusions 311 on the rotating handle 31, and the radius of a part of the rotating handle 31 is greater than the shaft diameter of the rotating shaft 30 and greater than the aperture of the rotating shaft hole on the lock core housing 10.

[0028] Two positioning pieces 32 are provided on the rotating shaft 30, namely the first positioning piece and the second positioning piece. The first / second positioning piece is pressed into the positioning piece groove 34 on the rotating shaft 30 through a spring 33. The rotating shaft 30 is clamped in the rotating shaft sleeve housing 40 through the first / second positioning piece 32. First positioning slots and second positioning slots are provided on the inner wall of the rotating shaft sleeve housing 40. The first positioning slot correspondingly limits the first positioning piece, and the second positioning slot correspondingly limits the second positioning piece.

[0029] A longitudinal limiting chute 41 is also provided on the inner wall of the rotating shaft sleeve housing 40. A fixed point convex column 35 is provided on the corresponding rotating shaft. When the positioning convex column 35 is stuck in the longitudinal limiting chute 41, the rotating shaft sleeve housing 40 limits the circumferential rotation freedom of the rotating shaft 30. When the rotating shaft 30 is pushed towards the rotating shaft sleeve housing 40, and the positioning convex column 35 slides out of the longitudinal limiting chute 41, the rotating shaft 30 has a 360° rotation freedom in the circumferential direction. That is, the rotation of the rotating shaft 30 is limited by the longitudinal limiting chute 41 on the inner wall of the rotating shaft sleeve housing 40, but as long as the rotating shaft 30 is pushed inwards, the positioning convex column 35 can be disengaged from the limitation of the longitudinal limiting chute 41, thereby having rotation freedom.

[0030] Moreover, after the rotating shaft 30 has rotational freedom, the transmission assembly 50 can be engaged with the eccentric camshaft 60; otherwise, the two are separated and not in contact.

[0031] As shown Figure 4 in the figure, when the rotating shaft 30 is at the position farthest from the rotating shaft sleeve housing 40, the transmission assembly 50 and the eccentric camshaft 60 are disengaged and not in contact with each other. When the rotating shaft 30 is pushed to the position closest to the rotating shaft sleeve housing 40, the transmission assembly 50 and the eccentric camshaft 60 are engaged and enter the transmission assembly state.

[0032] One end of the transmission assembly 50 is connected to the transmission shaft sleeve housing 40, and the other end has a transmission assembly structure. The corresponding eccentric camshaft 60 has a wedging end. When the wedging end of the eccentric camshaft 60 is inserted into the transmission assembly structure, the eccentric camshaft 60 is driven by the transmission assembly 50.

[0033] In actual industrial applications, there are many ways of the transmission assembly structure, such as splines, etc. Here, a variant form of the transmission assembly structure is made. As shown Figure 3 in the figure, the transmission assembly structure of the transmission assembly is shown as an inner plum blossom ring, and the wedging end of the corresponding eccentric camshaft is a plum blossom handle. According to needs, actually, the transmission assembly structure of the transmission assembly can also be designed as a hexagonal inner ring or a rectangular inner ring, and the wedging end of the eccentric cam is a hexagonal handle or a rectangular handle.

[0034] The eccentric camshaft kit 70 is connected to the locking tongue 80 through a fixing pin 71. A clamping end 72 is provided on one side of the eccentric camshaft kit 70 close to the locking tongue. The fixing pin 71 is clamped in the middle of the clamping end 72, and the locking tongue 80 is fixedly connected to the middle of the clamping end 72 through the fixing pin 71.

[0035] The precision locking assembly structure involved in the present invention is specifically designed for use on precious jewelry ropes or rings. Through a precise matching structure, on the basis of simple operation, it ensures the safety and reliability of the connection and fastening, improves the quality and use experience of the product. At the same time, the locking part is used as a single-piece accessory, which can be used for product upgrading, interchange, and enhancing its added value.

[0036] The above is only a preferred embodiment of the present invention and does not impose any form of limitation on the present invention. Although the present invention is disclosed as above with a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art, without departing from the technical solution scope of the present invention, when making some changes or modifications using the above-disclosed technical content into equivalent embodiments of equivalent changes, but as long as it does not depart from the technical solution content of the present invention, any simple modification, equivalent change, and modification made to the above embodiments according to the technical meaning of the present invention shall fall within the scope of the technical solution of the present invention.

Claims

1. A precision lock assembly structure, comprising a lock body, a latch head and a lock core body, wherein one end surface of the lock body is provided with a slot for the latch head to be inserted, a lock core body receiving position is provided in a direction perpendicular to the slot, and the lock core body is provided in the lock core body, characterized in that: The lock core body includes a lock core shell, a rotating shaft, a rotating shaft sleeve, a transmission assembly, an eccentric wheel shaft, an eccentric wheel shaft kit, a lock tongue, and an outer shell cover, wherein the outer shell cover and the lock core shell are buckled together, one end of the rotating shaft is left outside the lock core shell, the part of the rotating shaft inserted into the lock core shell is movably assembled with the rotating shaft sleeve, and the transmission assembly is sequentially assembled on the rotating shaft sleeve, the transmission assembly is sleeved on the eccentric wheel shaft and drives the eccentric wheel shaft, and the eccentric wheel shaft and the eccentric wheel shaft kit drive the lock tongue, and the lock tongue corresponds to the lock tongue slot on the lock core shell, and the lock tongue is driven to switch between extending the lock tongue slot / retracting the lock tongue slot.

2. The precision lock assembly structure according to claim 1, characterized in that: The end of the rotating shaft is also provided with a rotating handle, on which there is an anti-skid protrusion, and the radius of the rotating handle is larger than the shaft diameter of the rotating shaft and larger than the hole diameter of the rotating shaft hole on the lock core shell.

3. The precision lock assembly structure according to claim 2, characterized in that: Two positioning pieces are provided on the rotating shaft, namely a first positioning piece and a second positioning piece. The first / second positioning piece is pressed into the positioning piece groove on the rotating shaft by a spring, and the rotating shaft is fixed in the rotating shaft sleeve shell by the first / second positioning piece. A first positioning groove and a second positioning groove are provided on the inner wall of the rotating shaft sleeve shell. The first positioning groove corresponds to the first positioning piece, and the second positioning groove corresponds to the second positioning piece.

4. The precision lock assembly structure according to claim 3, characterized in that: A longitudinal limiting groove is also provided on the inner wall of the rotating shaft sleeve, and a fixed-point boss is provided on the corresponding rotating shaft. When the positioning boss is stuck in the longitudinal limiting groove, the rotating shaft sleeve limits the circumferential rotation freedom of the rotating shaft. When the rotating shaft is pushed toward the rotating shaft sleeve, the positioning boss is pushed out of the longitudinal limiting groove, and the rotating shaft has 360° rotation freedom in the circumferential direction.

5. The precision lock assembly structure according to claim 4, characterized in that: When the rotating shaft is at the farthest position from the rotating shaft sleeve, the transmission assembly and the eccentric shaft are disengaged from each other and are not in contact with each other. When the rotating shaft is pushed to the closest position to the rotating shaft sleeve, the transmission assembly and the eccentric shaft are engaged and enter a transmission assembly state.

6. The precision lock assembly structure according to claim 5, characterized in that: One end of the transmission assembly is connected to the transmission shaft housing, and the other end has a transmission assembly structure, and the corresponding eccentric wheel shaft has a wedging end. The wedging end of the eccentric wheel shaft is inserted into the transmission assembly structure, and the eccentric wheel shaft is driven by the transmission assembly.

7. The precision lock assembly structure according to claim 6, characterized in that: The transmission assembly structure of the transmission component is a plum blossom inner ring, a hexagonal inner ring or a rectangular inner ring, and the wedging end of the eccentric wheel shaft is a plum blossom handle, a hexagonal handle or a rectangular handle.

8. The precision lock assembly structure according to claim 6, characterized in that: The eccentric wheel shaft kit is connected to the lock tongue through a fixing pin. A clamping end is provided on one side of the eccentric wheel shaft kit close to the lock tongue. The fixing pin is clamped in the middle of the clamping end, and the lock tongue pin is fixedly connected to the middle of the clamping end through the fixing pin.

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