TITLE OF THE INVENTION
A THREE DIMENSIONAL LOCKING MECHANISM FOR MODULAR JEWELLERY FIELD OF THE INVENTION
This invention relates to a three dimensional locking mechanism for modular jewellery. In particular the invention relates to a mechanical joint mechanism that adds or removes any components or parts of the jewellery without affecting the rest of the jewellery design.
BACKGROUND OF THE INVENTION
The mounting, the pendant, the design of the components in jewellery is typically modeled in such a way that it forms a single static component. This provides the owner to use it in only way. Thus, there is a need for modular jewellery so that multiple looks can be achieved by the reorientation of the different modules of the jewellery. This will allow for a more economical and personalized jewellery experience for the owner. Thus, we need to devise locking mechanisms for joining the different modules of the jewellery. The main challenge here is to devise a locking mechanism that provides interchangeability without compromising on the aesthetic nature of the jewellery.
The concept of modular jewellery is generally known in the prior art, as represented by the following exemplary
Modular earring assembly US 5927104 A illustrate about design to create a more dynamic earring. This design is limited to static types of jewellery, i.e. there is no independence from the base for the parts joined. Also this design uses a threaded screw mechanism. Relying on screws poses security issues, as there is a chance that it might become loose through movement and vibration.
Convertible wire earring US 6058737 A discuss about a design which is limited to vertical type attachments via a sliding projection design. This limits the total number of attachments, creates a static design, and does not provide much mechanical stability.
Combination locket and key holder US 20070151315 Al comprises of a combination locket and key holder. The clasp mechanism involved uses magnetic action for locking. This is

not favorable mechanism since magnetic force doesn't provide a secure lock and also compromises with the gold quality of the jewellery.
Jewellery chain system for designing variable jewellery chains EP 2377418 A2 disclosed on jewellery of various lengths are formed and parts are joined together using a circular snap joint. A snap joint is not a very reliable mechanism for locking as its reliability reduces with repeated usage as it leads to permanent deformation.
Modular Jewellery US 6508079 B2 describes about the length of the chain can be varied by adding or subtracting the pieces. The pieces of the jewellery can be rigidly connected together by links or flexibly connected together by links with curved surfaces allowing relative pivoting between elements. The locking mechanism used is not very reliable.
Detachable joint EP 1025365 Bl showed a design with releasable connection between two arbitrary items, in which relative mobility is also possible. The locking mechanism uses a U shaped hook that aligns with keyhole, and is pulled down and rotated. It is very complicated design and is time consuming.
Even though there are various examples for locking mechanisms in modular jewellery, the lack of a successful design for locking mechanism of both functional and does not compromise on the aesthetic nature of the jewellery is made clear by the search into the commercial jewellery market. As per the search done, it is obvious that only traditional mechanisms such as T-joints, thread screwing mechanisms and slot mechanisms exists in today's commercial market. Thus the need still exists for a locking mechanism design which the jewellery owner will find flexible and not compromising the aesthetic appeal and the quality of gold.
Thus, the present invention aims to provide modular jewellery with locking mechanism which can easily add or remove jewellery components or parts without compromising aesthetic nature of the j ewellery.
SUMMARY OF THE INVENTION
The present invention relates to a mechanical joint mechanism to combine components or parts of the jewellery, in particular, relates to a three dimensional joining mechanism,

constraining the motion of components or parts of jewellery using three different perpendicular planes.
In one aspect of the present invention, a pendant has a ring which goes and fixes to the rear part chain which has extrusion with rectangular slot to hold the pendent, wherein the rectangular bar is inserted to constrain the ring of pendent to come out.
In other aspect of the present invention, the rectangular bar has a semi circular D slot in it. Another semi circular extension is inserted which can be orientated about its axis at the other end. At proper position, that is when the end part of the semi-circular extension is aligned with the slot in the rectangular bar and then the D is rotated to some other angle. This further locks the whole mechanism.
BRIEF DESCRIPTION OF THE DRAWINGS
Figure 1 showing jewellery parts used for three dimensional locking mechanism uses three degrees of freedom to lock the pieces of jewellery.
The ring, Part 4, (in the pendant or any other part of the jewellery) is rested on the base of
Part 1, circumscribing the rectangular extrusion.
The L shaped Part 2 is inserted in the perpendicular direction through the rectangular slot
in Part 1. The D shaped Part 3 is inserted in the similar shaped hole in Part 2 in a
direction perpendicular to both, thus securing this assembly.
The final locking is achieved by the 180 degree rotation of a screw at the end of Part 3. Figure 2 shows the final locked assembly.
Referring to the drawings, the aspects of the present invention are further described. The figures are not necessarily drawn to scale, and in some instances the drawings have been exaggerated or simplified for illustrative purposes only. One of ordinary skill in the art may appreciate the many possible applications and variations of the present invention based on the following examples of possible embodiments of the present invention
DETAILED DESCRIPTION OF THE INVENTION
The present invention relates to a locking mechanism to combine components or parts of the jewellery, in particular, relates to a three dimensional joining mechanism, constraining the motion of components or parts of jewellery using three different perpendicular planes.

One aspect of the invention relates to the modular jewellery parts or components, wherein these jewellery parts are used for three dimensional locking mechanisms in three degrees of freedom to lock the pieces of jewellery.
Part 1 -This part is shown as circular sheet (it could be of any other shape as per jewelry design) with a box type extrusion. Box type extrusion comes at the back side of the lock (hidden side) and from above is a flat circular plate. Circular plate is the front part can be modified as per requirements. It has a slot in the box extrusion for part 2. Dimensions of all these parts can be altered in accordance to the jewelry design.
Part 2- It is a t-shaped extrusion with a d shaped hole. D shaped hole is for part 3. T shape is chosen so that one side motion gets restricted. Part 2 is placed horizontally in the slot provided in part 1 till the T section covers one side of the parti. For restricting the second side of part 1, part3 is added in vertical direction.
Part 3-It is a d shaped rod which can completely pass through the hole in part 2. One end of the rod has a screw which is of d shaped. This screw can be rotated till few degrees. The other end has a flat end which sits flat over part 2. Once part is placed vertically with screw at the bottom, d shape is turned over to restricting the screw from getting unlocked. This way lock gets secured in all directions.
Part 4-This design is to attach one part with another very firmly. One is part 1 and second is part 4, part 2 and part 3 are additional parts to join the two (part 1 & part 4). Part 1 can be a broad chain and part 4 can be a pendant.
Part 4 ring goes over the box type extrusion of part 1 from back side and then part 2 is placed horizontally and followed by part 3 placed vertically and turning of the D screw.
It may be appreciated by those skilled in the art that the drawings, examples and detailed description herein are to be regarded in an illustrative rather than a restrictive manner.

We Claim:
1. A three dimensional locking mechanism for modular jewellery, wherein the mechanism
is strong and flexible at the inter-connected joints of the jewellery, includes a plurality of
jewellery parts or components comprising;
a. a base circumscribing rectangular extrusion to hold the pendent or any other part
of the jewellery.
b. a L shaped rectangular bar with semi circular D slot and that is inserted in the
rectangular extrusion of a base in perpendicular direction.
c. a D shaped rod inserted into similar shaped hole in a L shaped rectangular bar in
perpendicular direction thus securing the assembly.
2. The three dimensional locking mechanism of claim 1, wherein the joint mechanism does not compromise with joint security or the properties of gold that is used for manufacturing.
3. The three dimensional locking mechanism of claim 1, wherein the whole assembly is locked by the complete 180 degree of rotation of the screw at the end of D shaped rod.
4. The three dimensional locking mechanism of claim 15 wherein the locking mechanism uses three degrees of freedom to lock the pieces of jewellery.
5. The three dimensional locking mechanism of claim 1, wherein engaging and disengaging of the jewellery parts can be easily done by detachable bars in the lock mechanism.
6. The three dimensional locking mechanism of claim 1, wherein the aesthetics nature of the jewellery is not hindered as the mechanism is hidden behind the jewellery part and is not seen outside.
7. The three dimensional locking mechanism of claim 1, wherein the interchangeable mechanism allows for jewelry segments to be interchanged across jewelry styles, but not limited to earring, bracelet, pendant, etc.