Detachable chain type jewelry structure

Abstract

The utility model relates to a detachable chain type jewelry structure. The jewelry structure comprises a chain and a front decorative plate, wherein two ends of the chain are fixedly connected with a middle plate and a rear cover plate respectively; a middle column is arranged on the back face of the front decoration plate and provided with external threads, an internal threaded hole is formed in the middle plate, and the front decoration plate and the middle plate are fixedly connected through threaded connection between the middle column and the internal threaded hole. A middle hole is formed in the rear cover plate, a clamping tongue is arranged in the middle hole, the outer end of the middle column penetrates into the middle hole, an annular clamping groove formed in the outer end of the middle column is connected with the clamping tongue in a clamped mode, and the middle plate is clamped between the rear cover plate and the front decoration plate. The front trim panel middle column is in threaded connection and clamped connection with the middle plate and the rear cover plate at the two ends of the chain correspondingly, the structure disassembly and assembly convenience is relatively better, the stability is better, the front trim panel middle column and the rear cover plate are connected to the middle column, and the structure connection strength is easier to improve.

Description

Technical Field

[0001] This application relates to jewelry structures, and more specifically, a detachable chain jewelry structure. Background Technology

[0002] Necklaces and bracelets are common chain-type jewelry. Necklaces can be worn around the neck, while bracelets can be worn on the wrist. Some necklaces use clasps at both ends for detachable connection; common clasps include S-clasps, M-clasps, and spring clasps. Clasps are usually quite thin, making them inconvenient to install and remove, and their connection strength is relatively low, which needs improvement. Utility Model Content

[0003] The purpose of this application is to overcome the above-mentioned shortcomings of the prior art and provide a detachable chain jewelry structure to improve the ease of assembly and disassembly.

[0004] To achieve the above objectives, this application adopts the following technical solution: a detachable chain jewelry structure, comprising a chain and a front panel, with a middle plate and a back cover plate fixedly connected to both ends of the chain respectively; a central post is provided on the back of the front panel, the central post has external threads, and the middle plate has an internal threaded hole, the front panel and the middle plate are fixedly connected by the threaded connection between the central post and the internal threaded hole; the back cover plate has a central hole with a latch in the central hole, the outer end of the central post passes through the central hole and the annular groove on the outer end engages with the latch, and the middle plate is sandwiched between the back cover plate and the front panel.

[0005] In an optional configuration, the side of the middle plate facing the rear cover plate has at least one locking head, and the side of the rear cover plate facing the middle plate has an arc-shaped groove. The locking head is inserted into the arc-shaped groove to form a locking connection. There are two locking heads, which are positioned opposite each other on both sides of the internal threaded hole, and the arc-shaped groove corresponds to each locking head. The arc-shaped groove is divided into an inlet and a locking section, with the inlet and locking section connected. The width of the inlet is not less than the width of the locking head, and the width of the locking section is less than the width of the locking head.

[0006] In an optional configuration, the rear cover plate has a movable spring piece that can reciprocate perpendicular to the axis of the central hole. The latch is an arc-shaped arm of the movable spring piece. When the central post is engaged with the rear cover plate, the arc-shaped arm of the movable spring piece engages in the annular groove at the outer end of the central post. There are two identical movable spring pieces, which are centrally symmetrical with respect to the axis of the central hole. The arc-shaped arm of one movable spring piece is located in the opening groove formed by the arc-shaped arm of the other movable spring piece. An elastic strip is sandwiched between the two movable spring pieces. One end of the elastic strip is fixed to one of the movable spring pieces, and the other end is fixed to the other movable spring piece. The restoring force of the elastic strip pushes the two movable spring pieces radially towards the inner walls of both sides of the rear cover plate, so that the arc-shaped arms of the two movable spring pieces move closer to each other.

[0007] In an optional configuration, the outer end of the movable spring is provided with a radial pressing head, which extends out from the side of the rear cover plate.

[0008] In an optional configuration, the movable spring is provided with a first slot and a second slot. The length direction of the first slot forms an angle of less than 90 degrees with the movement direction of the movable spring. The first slot and the second slot are axially symmetrical with respect to the movement direction of the movable spring. One end of the elastic strip is inserted into the first slot of the movable spring and fixed, and the other end is inserted into the second slot of another movable spring and fixed.

[0009] In the optional configuration, there are two elastic bars that are set relative to each other.

[0010] In an optional configuration, the outer side of the arc-shaped arm is provided with an extended guide bar, the length direction of which is parallel to the movement direction of the movable spring, and the opening slot is provided with a guide groove opposite to the guide bar, and the guide bar of the movable spring is inserted into the guide groove of another movable spring.

[0011] Compared with existing technologies, the advantages of this application are as follows: by using threaded connections and snap-fit ​​connections between the central post of the front panel and the middle plates and rear cover plates at both ends of the chain, the structure is easier to assemble and disassemble, and the stability is also better. Moreover, since all connections are made to the central post, it is easier to improve the structural connection strength. Furthermore, the front panel can cover the connection between the central post and the middle plates and rear cover plates, which helps to improve the overall appearance of the jewelry structure.

[0012] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application, it can be implemented according to the contents of the specification. In order to make the above and other objects, features and advantages of this application more obvious and understandable, preferred embodiments are given below and described in detail. Attached Figure Description

[0013] Figure 1 This is a three-dimensional view of the jewelry structure assembly for this application.

[0014] Figure 2 , Figure 3 and Figure 4 All of these are exploded diagrams of the jewelry structure in this application.

[0015] Figure 5 This is an exploded view of the rear cover plate of this application.

[0016] It should be noted that the products shown in the above views have been appropriately scaled down / enlarged to fit the drawing size and ensure clarity of the views, and there is no limitation on the size of the products shown in the views. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0018] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0019] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0020] This application embodiment is a detachable chain jewelry structure, the specific structure of which is as follows: Figures 1-5 As shown. Chain jewelry structures can be necklaces, bracelets, anklets, etc.

[0021] Combination Figures 1 to 3 As shown, the jewelry structure of this embodiment includes a chain 10 and a front panel 20. The chain 10 can be a precious metal chain, such as gold or silver. A middle plate 30 and a back cover plate 40 are fixedly connected to both ends of the chain 10, respectively, and the fixing method can be welding. The surface of the front panel 20 can be decorated as needed. Figure 2 and Figure 3 As shown, a center pillar 21 is provided on the back of the front trim panel 20. The center pillar 21 has external threads 22, and an annular groove 23 is provided at its outer end. The middle plate 30 has a corresponding internal threaded hole 31. The front trim panel 20 and the middle plate 30 are fixedly connected by the threaded connection between the center pillar 21 and the internal threaded hole 31. Ultimately, the middle plate 30 is tightly pressed against the back of the front trim panel 20, making the threaded connection between the middle plate 30 and the center pillar 21 less prone to loosening. Figure 2 and Figure 3 As shown, the rear cover plate 40 is provided with a central hole 41 corresponding to the central pillar 21 and a latch 51' is provided in the central hole 41. During installation, the outer end of the central pillar 21 is inserted into the central hole 41 and the annular groove 23 on the outer end is engaged with the latch 51'. At this time, the middle plate 30 is sandwiched between the rear cover plate 40 and the front trim panel 20. The rear cover plate 40, the front trim panel 20, and the middle plate 30 are fixed together to form a whole.

[0022] In this embodiment, the jewelry structure is connected to the central post 21 of the front panel 20 and the central plates 30 and rear cover plates 40 at both ends of the chain 10 via threaded connections and snap-fits. This makes the structure easier to assemble and disassemble, and also provides better stability. Furthermore, since everything is connected to the central post 21, it is easier to improve the structural connection strength. The front panel 20 can also be used to cover the connection between the central post 21 and the central plates 30 and rear cover plates 40, which helps to improve the overall appearance of the jewelry structure.

[0023] In some embodiments, combined with Figure 2 and Figure 3 As shown, the side of the middle plate 30 facing the rear cover plate 40 is provided with at least one L-shaped latch 32, and the side of the rear cover plate 40 facing the middle plate 30 is provided with a corresponding arc-shaped groove 42. The latch 32 is inserted into the arc-shaped groove 42 to form a latching connection. Specifically, in this embodiment, there are two latches 32, and the two latches 32 are arranged opposite to each other on both sides of the internal threaded hole 31. The arc-shaped groove 42 corresponds to the latches 32 one-to-one. The arc-shaped groove 42 is divided into an inlet 421 and a latching section 422. The inlet 421 and the latching section 422 are connected. The width of the inlet 421 is not less than the width of the latch 32, and the width of the latching section 422 is less than the width of the latch 32. During installation, first connect the internal threaded hole 31 of the middle plate 30 to the center pillar 21 of the front trim panel 20. Then, the arc groove 42 inlet 421 of the rear cover plate 40 applies pressure to the clamping head 32 of the middle plate 30 and the rear cover plate 40, so that the outer end of the center pillar 21 is inserted into the central hole 41 of the rear cover plate 40 and the clamping tongue 51' is engaged with the annular clamping groove 23 of the outer end of the center pillar 21. Finally, rotate the rear cover plate 40 clockwise so that the clamping head 32 enters the clamping section 422 of the arc groove 42. At this time, the middle plate 30 and the rear cover plate 40 are also mutually fixed, which enhances the connection strength and stability of the overall structure.

[0024] In some embodiments, combined with Figure 4 and Figure 5 As shown, a movable spring piece 50 is provided inside the rear cover plate 40, which can reciprocate perpendicularly to the axis of the central hole 41. The movable spring piece 50 can be made of metal, such as carbon steel. The latch 51' is an arc-shaped arm 51 of the movable spring piece 50. That is, when the central post 21 is engaged with the rear cover plate 40, the arc-shaped arm 51 of the movable spring piece 50 is engaged in the annular groove 23 at the outer end of the central post 21, so that the central post 21 and the rear cover plate 40 are fixed. A chamfer is provided on the inner edge of the arc-shaped arm 51, and as... Figure 4 As shown, the outer edge of the central post 21 is also chamfered to reduce the resistance when the central post 21 is inserted.

[0025] In some embodiments, combined with Figure 4 and Figure 5As shown, there are two identical movable spring pieces 50, and they are centrally symmetrical about the axis of the central hole 41. The arc-shaped arm 51 of one movable spring piece 50 is located in the opening groove 57 formed by the arc-shaped arm 51 of the other movable spring piece 50. An elastic strip 60 is sandwiched between the two movable spring pieces 50, with one end fixed to one movable spring piece 50 and the other end fixed to the other movable spring piece 50. The restoring force of the elastic strip 60 can push the two movable spring pieces 50 radially towards the inner walls of both sides of the rear cover plate 40, thus bringing the arc-shaped arms 51 of the two movable spring pieces 50 closer together, reducing the inner diameter between the two arc-shaped arms 51. When engaging the central pillar 21 of the front trim panel 20, the force of the elastic strip 60 causes the two arc-shaped arms 51 to simultaneously clamp the annular groove 23 of the central pillar 21. Specifically, there are two elastic strips 60 arranged opposite each other. The elastic strip 60 is a straight strip made of an elastic material, such as spring steel. In other embodiments, a compression spring can be used instead of an elastic strip to achieve the same effect. In other embodiments, only one elastic strip may be provided to provide restoring force.

[0026] In some embodiments, combined with Figure 4 and Figure 5 As shown, the movable spring 50 has a first slot 53 and a second slot 54. The length direction of the first slot 53 forms an angle of less than 90 degrees with the movement direction of the movable spring 50, and the first slot 53 and the second slot 54 are axially symmetrical with respect to the movement direction of the movable spring 50. One end of the elastic strip 60 is inserted into the first slot 53 of the movable spring 50 and fixed, and the other end is inserted into the second slot 54 of another movable spring 50 and fixed. Another elastic strip 60 is fixed between the two movable springs 50 in the same way. The elastic strip 60 is initially straight. After being assembled and fixed between the two movable springs 50, the elastic strip 60 is compressed and becomes arc-shaped. Therefore, the assembled elastic strip 60 has a restoring force, pushing the two movable springs 50 radially towards the inner walls of both sides of the rear cover plate 40.

[0027] In some embodiments, combined with Figure 4 and Figure 5 As shown, the outer end of the movable spring 50 is provided with a radial pressing head 52, which protrudes from the side of the rear cover plate 40. When disassembly is required, pressure is applied to the pressing heads 52 on both sides, causing the movable spring 50 to move inward. As a result, the two arc-shaped arms 51 form a larger inner circle, that is, the arc-shaped arms 51 disengage from the annular groove 23 of the center pillar 21. At this time, the center pillar 21 is released from its restraint, and the rear cover plate 40 is rotated counterclockwise, allowing the front trim panel 20 and the center plate 30 to separate from the rear cover plate 40. For further disassembly, the center plate 30 is rotated counterclockwise relative to the front trim panel 20 until it disengages from the threaded connection.

[0028] In some embodiments, combined with Figure 4 and Figure 5As shown, the outer side of the arc-shaped arm 51 is provided with an outwardly extending guide bar 55. The length direction of the guide bar 55 is parallel to the movement direction of the movable spring 50. The opening slot 57 is provided with a guide groove 56 opposite to the guide bar 55. The guide bar 55 of the movable spring 50 is inserted into the guide groove 57 of the other movable spring 50, so that the reciprocating movement of the movable spring 50 is less likely to deviate.

[0029] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application 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 application.

[0030] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0031] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. The illustrative expressions of the above terms in this specification should not be construed as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0032] The above examples are merely illustrative of the technical content of this application to facilitate reader understanding, but do not imply that the implementation methods of this application are limited to these. Any technical extensions or re-creations made based on this application are protected by this application. The scope of protection of this application is determined by the claims.

Claims

1. A detachable chain jewelry structure, characterized in that, It includes a chain and a front trim panel. The two ends of the chain are fixedly connected to a middle plate and a rear cover plate, respectively. The back of the front trim panel is provided with a central post with external threads. The middle plate is provided with an internal threaded hole. The front trim panel and the middle plate are fixedly connected by the threaded connection between the central post and the internal threaded hole. The rear cover plate is provided with a central hole and a latch in the central hole. The outer end of the central post passes through the central hole and the annular groove on the outer end engages with the latch. The middle plate is sandwiched between the rear cover plate and the front trim panel.

2. The detachable chain jewelry structure as described in claim 1, characterized in that, The middle plate has at least one clip on the side facing the rear cover plate, and the rear cover plate has an arc-shaped groove on the side facing the middle plate. The clip is inserted into the arc-shaped groove to form a snap-fit.

3. The detachable chain jewelry structure as described in claim 2, characterized in that, There are two clips, which are positioned opposite each other on both sides of the internal threaded hole, and the arc-shaped grooves correspond one-to-one with the clips.

4. The detachable chain jewelry structure as described in claim 2 or 3, characterized in that, The arc-shaped groove is divided into an inlet and a snap-fit ​​section. The inlet and the snap-fit ​​section are connected. The width of the inlet is not less than the width of the snap-fit ​​head, and the width of the snap-fit ​​section is less than the width of the snap-fit ​​head.

5. The detachable chain jewelry structure as described in claim 1, characterized in that, The rear cover plate is provided with a movable spring piece that can reciprocate perpendicular to the axis of the central hole. The latch is an arc-shaped arm of the movable spring piece. When the central post is engaged with the rear cover plate, the arc-shaped arm of the movable spring piece is engaged in the annular groove at the outer end of the central post.

6. The detachable chain jewelry structure as described in claim 5, characterized in that, There are two identical movable springs, and they are centrally symmetrical with respect to the central hole axis. The arc-shaped arm of the movable spring is located in the opening groove formed by the arc-shaped arm of the other movable spring. An elastic strip is sandwiched between the two movable springs. One end of the elastic strip is fixed to the movable spring, and the other end is fixed to the other movable spring. The restoring force of the elastic strip pushes the two movable springs radially toward the inner walls of the two sides of the rear cover plate, so that the arc-shaped arms of the two movable springs move closer to each other.

7. The detachable chain jewelry structure as described in claim 6, characterized in that, The outer end of the movable spring is provided with a radial pressing head, which protrudes from the side of the rear cover plate.

8. The detachable chain jewelry structure as described in claim 6, characterized in that, The movable spring has a first slot and a second slot. The length direction of the first slot forms an angle of less than 90 degrees with the movement direction of the movable spring. The first slot and the second slot are axially symmetrical with respect to the movement direction of the movable spring. One end of the elastic strip is inserted into the first slot of the movable spring and fixed, and the other end is inserted into the second slot of another movable spring and fixed.

9. The detachable chain jewelry structure as described in any one of claims 6-8, characterized in that, There are two elastic strips arranged opposite each other.

10. The detachable chain jewelry structure as described in any one of claims 6-8, characterized in that, The outer side of the arc-shaped arm is provided with an outwardly extending guide bar. The length direction of the guide bar is parallel to the movement direction of the movable spring. The opening slot is provided with a guide groove opposite to the guide bar. The guide bar of the movable spring is inserted into the guide groove of another movable spring.

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