Abstract:
A securing structure for a light emitting element at a surface of a shell-like accessory and a manufacturing method for the securing structure are provided. According to an appearance of a handmade accessory, a mold, a positioning tenon and an adapter body are provided. The adapter body is supported and secured by combining the positioning tenon at the mold. With repeated applying operations, a plastic cementing agent is applied at an outer round surface of the adapter body to provide a combining effect. The mold and the positioning tenon are removed after the plastic cementing agent is set and shaped. Thus, using an axis and structure support of the adapter body, the light emitting grain installed is capable of securing an angular position of its optical axis as well as enhancing the combining strength.

Description:
BACKGROUND OF THE INVENTION 
     a) Field of the Invention 
     The invention relates in general to a handmade accessory, which allows a light emitting grain to be installed at precise angular positions at a surface of the handmade accessory and enhances binding forces between elements. 
     b) Description of the Prior Art 
     Sophisticated commercial fashion accessories are available in all diversities, including those that are large in size and handmade. For example,  FIG. 1  shows a handmade accessory  1  having a shell-like housing  2 . To form the shell-like housing  2 , a plastic cementing agent is first manually applied at a surface of a mold and a fiber cloth is then covered thereon to yield a combined and solid structure. To enhance esthetic values of the surface of the handmade accessory  1 , a light emitting grain  3  is installed to embellish the surface using a light beam from the light emitting grain  3 . 
     In a conventional approach, at the surface of the handmade accessory  1 , a hole  21  is provided at a position to be installed with the light emitting grain  3 . The hole  21  can be penetrated by the light emitting grain  3 , which is further secured by applying an adhesive  11  at a periphery of the hole  21 . 
     In a manufacturing process, a mold is first provided according to an outer shape of the handmade accessory  1 . A surface of the mold is applied with a plastic cementing agent, which is cured into the shell-like housing  2 . The hole  21  is then formed on the shell-like housing  2  by using an electric drill, and is penetrated by and combined with a body of the light emitting grain  3 . However, as the shell-like housing  2  is a thin shell body, a height of an inner wall of the hole  21  is extremely small such that an axis angle of the light emitting grain  3  cannot be supported. In addition, due to the thin material, the housing is liable to breakage caused by stress at a contact area of the housing. 
     As shown in  FIG. 2 , the handmade accessory  1  is provided with one single light emitting grain  3  having an optical axis  300 . The overall functional esthetic values of the handmade accessory  1  may remain consistent and unaffected if the optical axis  300  is shifted. As shown in  FIG. 3 , to imitate a vehicle front of a vehicle, two light emitting grains  3  are provided to simulate vehicle headlights. It is possible that the two projected optical axis  300  be non-parallel and brightness levels of the two headlights be uneven, resulting in degraded functional esthetic values and realistic effects. Further, referring to  FIG. 4  showing angles of the optical axis, when imitating an appearance of an animal, multiple light emitting grains  3  are provided around a neck of the animal. As shown in  FIG. 4 , the optical axis  300  of each of the light emitting grains  3  is perpendicular to a tangent of the surrounding curvature. 
     SUMMARY OF THE INVENTION 
     It is a primary object of the present invention to provide a securing structure for a light emitting element at a surface of a shell-like accessory and a manufacturing method for the provide a securing structure. The securing structure and manufacturing method of the present invention are capable of installing a light emitting grain at a precise angular position and providing a more reliable assembly structure. 
     To achieve the above object, in an embodiment of the present invention, a mold having a pick slot is utilized to assemble a positioning tenon. After having placed an adapter body, the shell-like housing is applied, and the mold and the positioning tenon are removed. Thus, the adapter body is secured at the shell-like housing in alignment, and provides a precise angular position for installing the light emitting grain. 
     To achieve the above object, in an embodiment of the present invention, a transpose hole is provided in the adapter body. Apart from allowing the shell-like housing to be positioned and temporarily assembled by the positioning tenon, the transpose hole provides the light emitting grain with a combining effect after finishing the shell-like housing. 
     The above and other aspects of the invention will become better understood with regard to the following detailed description of the preferred but non-limiting embodiments. The following description is made with reference to the accompanying drawings. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a schematic diagram of a structure of a conventional handmade accessory assembled with a light emitting grain; 
         FIG. 2  is a diagram of a utilization state of a conventional handmade accessory assembled with a light emitting grain; 
         FIG. 3  is a diagram of a utilization state of another conventional handmade accessory assembled with a light emitting grain; 
         FIG. 4  is a diagram of a utilization state of another conventional handmade accessory assembled with a light emitting grain; 
         FIG. 5  is a structural relationship diagram of a positioning tenon and an adapter body of the present invention; 
         FIG. 6  is a diagram according to an embodiment of the present invention; 
         FIG. 7  is a schematic diagram of a guiding hole according to an embodiment of the present invention; 
         FIG. 8  is a relationship diagram of a light emitting grain installed according to another embodiment of the present invention; 
         FIG. 9  is a schematic diagram of a light emitting grain combined according to another embodiment of the present invention; 
         FIG. 10  is a diagram of a positioning tenon and an adapter body according to another embodiment of the present invention; 
         FIG. 11  is a side view after having completed an applying operation of the present invention; 
         FIG. 12  is a schematic diagram of operations of a mold removal operation of the present invention; 
         FIG. 13  is a schematic diagram of a drilling operation of the present invention; 
         FIG. 14  is a diagram of a light emitting grain combined according to an embodiment of the present invention; 
         FIG. 15  is a schematic diagram of an assembly relationship of  FIG. 14 ; 
         FIG. 16  is a flowchart of a manufacturing method of the present invention. 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     The above and other aspects of the invention will become better understood with regard to the following detailed description of the preferred but non-limiting embodiments. The following description is made with reference to the accompanying drawings. 
     The description is given with reference to  FIG. 16  first, followed by  FIG. 5  and  FIG. 6 . In the manufacturing method of the present invention, a preparation operation  80  is first performed. The preparation operation  80  includes the configuration of a mold  100 , and the completion of an adapter body  4 , a positioning tenon  5 , a light emitting grain  3  and a plastic cementing agent  200 . 
     At a position for correspondingly installing the light emitting grain  3 , a surface of the mold  100  is excavated to form a pick slot  101  having a depth. An angular direction of an axial arrangement of the pick slot  101  is determined according to an axial direction of the optical axis. The positioning tenon  5  is a cylindrical body, and includes a joining end  51  and a body  52 . Preferably, a length of the body  52  is equal to the depth of the pick slot  101 , and the joining end  51  has a reduced diameter. The adapter body  4  is a spherical body, has a height smaller than its overall diameter, and includes a transpose hole  41  penetrated through an axis of the adapter body  4 . The transpose hole  41  passes by a shoulder  400  to be inwardly contracted to form a conducting hole  411 . One end of the conducting hole  411  is sealed by an end sealing plate  42 . The adapter body  4  corresponds to the positioning tenon  5 . An outer end of joining end  51  of the positioning tenon  5  is reduced to form a guiding end  510 , which is further accommodated in the conducting hole  411 . The joining end  51  is accommodated in the transpose hole  41 . After completing the shell-like housing  2 , the shell-like housing  2  is physically connected to the adapter body  4  and is disengaged from the mold  100 . The adapter body  4  is similarly disengaged from the positioning tenon  5 . 
     A positioning operation  50  is performed after completing the preparation operation  80 . The positioning tenon  5  is planted into the pick slot  101  of the mold  100 , and the joining end  51  is revealed. 
     A transfer operation  40  is performed after completing the positioning operation  50 . The transpose hole  41  of the adapter body  4  is aligned and assembled with the joining end  51 . In principle, the height of the adapter body  4  in a cylindrical shape is smaller than the outer diameter of the adapter body  4 . Further, the adapter body  4  includes the transpose hole  41  internally provided in an axial direction, the end sealing plate  42  at one end facing the exterior, and a radial fastening ring  43  surrounding an outer periphery of the adapter body  4 . The radial fastening ring  43  and the adapter body  4  are a formed integral. The depth of the transpose hole  41  provided at the adapter body  4  is correspondingly designed to be equal to a length of the joining end  51  provided at the positioning tenon  5 . 
     An applying operation  20  is then performed. The plastic cementing agent  200  is applied to an outer surface of the mold  100 . During the applying operation  20 , it is ensured that the plastic cementing agent  200  is closely and tightly applied to the outer periphery of the adapter body  4  in a surrounding manner. Thus, a breadth is distributed to a side of a breadth of the adapter body  4 , and the plastic cementing agent  200  is all-around closely adhered to the side of the breadth of the adapter body  4 , including the outer round surface of the radial fastening ring  43 . 
     Further, the radial fastening ring  43  that surrounds a waist portion of the outer periphery the adapter body  4  is provided, and an outer periphery of the radial fastening ring  43  may be expanded to form a cone surface  44 . As such, when the applied layer of the plastic cementing agent  200  is cured into the shell-like housing  2 , with multi-angular pulling forces and a strong adhesion effect of the plastic cementing agent  200 , the adapter body  4  becomes securely combined with the shell-like housing  2 . A thickness of the applied layer of the plastic cementing agent  200  corresponds to a thickness requirement of the shell-like housing  2 , and can be repeatedly applied to accumulate and form a handmade shell-like accessory. 
     Next, a setting and shaping operation  70  is performed. In the setting and shaping operation  70 , the housing formed in collaboration with the applying operation may solidifies into a fundamental shape having a flexibility that satisfies the strength for mold removal. The plastic cementing agent  200  may be a plastic material, which may be implemented by a cold setting or hot setting material. A cold setting material solidifies under a room temperature. As for a hot setting material, by catalyzing reactions using a temperature, the setting of the hot setting material can be accelerated. Since the positioning tenon  5  is applied in a hot setting environment, the positioning tenon  5  and the adapter body  4  need to be implemented by a heat resistant material such as plastic steel. 
     A mold removal operation  71  is performed after the setting and shaping operation  70 . The formed shell-like housing  2  is disengaged from the mold  100 , and the positioning tenon  5  is removed. 
     A curing operation  72  follows the mold removal operation  71 . In the curing operation  72 , the shell-like housing  2  is exposed to air to reach a mechanical strength that meets relocation and placement requirements. The duration for the curing operation may be adjusted according to a response speed of the plastic cementing agent  200  of the shell-like housing  2 , and may be between several hours to tens of hours, so as to allow an organization consolidation of the plastic cementing agent  200  to complete. Further, in the curing operation  72 , both an inner side and an outer side of the shell-like housing  2  are exposed to be contact with air. Further, the surface of the shell-like housing  2  overlaps with an end surface of an opening of the transpose hole  41 . 
     Refer to  FIG. 7  and  FIG. 8  showing a drilling operation  60 . It should be noted that, one end of the conducting hole  411  is sealed by the end sealing plate  42 , and an outer surface of the end sealing plate  42  is covered by a cladding layer  201  accumulated during the applying operation on the shell-like housing  2 . Therefore, a drilling operation for a guiding hole is required to penetrate the center of the adapter body  4 . During the drilling operation of the drill head  6 , through the position of the conducting hole  411 , a guiding direction of the guiding hole is obtained for alignment with a centerline of the adapter body  4 , such that the guiding hole can be overlapped with the centerline of the adapter body  4  to penetrated the conducting hole  411  from front to rear. 
     Again referring to  FIG. 8 , by drilling the foregoing hole for the conducting hole  411 , a through hole having a maximum diameter substantially equal to that of the conducting hole  411  is formed at the end sealing plate  42 , and the adapter body  4  becomes axially penetrated. 
     A grain installation operation  30  is performed for the light emitting grain  3 . The light emitting grain  3  is embedded and installed in the transpose opening  41 . A combining portion  32  of the light emitting grain  3  has a diameter that cooperates with an activity tolerance of the transpose hole  41 , and is a straight axis  323  having a rear end connected to an electrical wire  31 . The shoulder  400  of the adapter body  4  is to be abutted against by an angular end  320  of the light emitting grain  3 . By penetrating the electrical wire  31  through the internal axial channel in the adapter body  4 , the combining portion  32  of the light emitting grain  3  is allowed to be combined at the transpose hole  41  (as shown in  FIG. 9 ). 
     The combining portion  32  may be implemented in form of the straight axis  323 , and is abutted against the shoulder  400  of the adapter body  4  after assembling the angular end  320  at the bottom to the adapter body  4 . After the assembly operation, an adhesive may be filled to a gap between the transpose hole  41  of the adapter body  4  and an outer round surface of the light emitting grain  3  to physically combine the light emitting grain  3  and the adapter body  4 . Thus, the optical axis of the light emitting grain  3  is secured to be overlapped with the axis of the adapter body  4 , in a way that the angular position of the optical axis can be standardized and positioned. Thus, for every manufactured product, the optical axis of each light emitting grain  3  can be provided with an expected illumination angular position. Further, between the adapter body  4  and the shell-like housing  2 , the outer round surface of the adapter body  4  is covered by the plastic cementing agent  200  of the shell-like housing  2 . At one end surface of the end sealing plate  42 , a cladding layer  201  is simultaneously formed during the applying operation of the plastic cementing agent  200  on the shell-like housing  2 . The cladding layer  201  covers an opposite end surface of the adapter body  4  (except for the part that is drilled in the drilling operation). 
     The adapter body  4  is a spherical body or a circular ring body, and has an outer surface provided with the radial fastening ring  43  to form a multi-tier combination with the shell-like housing  2  to further form three-dimensional angular positioning effects. After assembling the light emitting grain  3 , an adhesion operation is conducted to indirectly provide the light emitting grain  3  with a physical connection between the adapter body  4  and the shell-like housing  2 . Further, the combining and contact area is expanded using the periphery of the adapter body  4  to significantly increase the mechanical binding force. 
     In another embodiment of the present invention, at a waist portion, the light emitting grain is provided with a block ring to limit an assembly depth. As shown in  FIG. 10 , the positioning tenon  5  includes a joining end  51  and a body  52 . A diameter of the joining end  51  is reduced. The adapter body  4  in principle has a height smaller than an outer diameter thereof, and includes a transpose hole  41  internally provided in an axial direction, an end sealing plate  42  at one end facing the exterior, and a radial fastening ring  43  surrounding an outer periphery of the adapter body  4  in a radial manner. A center of the end sealing plate  42  is provided with an opening  410 . 
     In one embodiment, as shown in  FIG. 11 , the positioning tenon  5  may be planted into a pick slot  101  at a mold  100  through a positioning operation  50 , and the transpose hole  41  provided at the adapter body  4  is transferred and combined at the joining end  51  of the positioning tenon  5  by a transfer operation  40 . 
     In an applying operation  20 , a plastic cementing agent  200  is similarly applied to an outer surface of the mold  100 , and a setting and shaping operation  70  follows the applying operation  20 . 
     After an element organization of the plastic cementing agent  200  reaches the time for setting and shaping, a mold removal operation  71  is performed, as shown in  FIG. 12 . The mold removal operation  71  is performed along an axial line of the pick slot  101  to disengage the positioning tenon  5  from the adapter body  4 . 
     A curing operation  72  is performed after the mold removal operation  71 . In the curing operation  72 , the plastic cementing agent  200  of the shell-like housing  2  is allowed to completely solidify. 
     With the curing effects of the curing operation  72 , an adhesive force of the plastic cementing agent  200  is provided between an outer round surface of the adapter body  4  and the plastic cementing agent  200  of the shell-like housing  2  to provide an effective binding force that achieves a reliable three-dimensional combination. 
     As shown in  FIG. 13 , a drilling operation  60  is performed. The drilling operation  60  is performed by aligning a working axial line of a drill head  6  with an axial line of the transpose hole  41  of the adapter body  4  to obtain a drill hole  61  as shown in  FIG. 14 . The drill hole  61  distinctly conducts the transpose hole  41  to an exterior. 
     In the drilling operation  60  for the drill hole  61 , a diameter of the drill hole  61  is designed to be equal to a diameter of the transpose hole  41  of the adapter body  4  (as shown in  FIG. 15 ). Such drill hole  61  having an equal diameter may be implemented by a straight axis  323  of the light emitting grain  3  having a block ring  324  at an outer waist portion. A penetrated diameter of the straight axis  323  may coordinate with the transferred transpose hole  41 . The overall outer body of the straight axis  323  is limited by the position and depth of the block ring  324 , and is supported and combined by a long inner hole of the transpose hole  41 . Further, an adhesive  11  may be applied to a gap between the two. Thus, an angular position of the optical axis of the light emitting grain  3  is limited by the centerline of the of the transpose hole  41  to provide a strong combining effect. 
     While the invention has been described by way of example and in terms of the preferred embodiments, it is to be understood that the invention is not limited thereto. On the contrary, it is intended to cover various modifications and similar arrangements and procedures, and the scope of the appended claims therefore should be accorded the broadest interpretation so as to encompass all such modifications and similar arrangements and procedures.