Patent Application
20100077537
1. Technical Field
The present invention relates to diving masks, and more particularly, to a pair of multicolor frameless diving masks and a method for making the same, in which the pair of multicolor diving masks is made by using different molds.
2. Description of Related Art
The structure of diving masks is well known and well established, leaving little room for improvement in its shape due to the fact that such masks, to be worn on users' faces, must conform to human facial contours. However, the existing mask structures can be improved upon to provide a more comfortable wearing experience. In early days, diving masks are made by first preparing a plurality of components and then manually putting the components together. Since leakproofness of masks thus made depends on whether or not the components are tightly assembled with each other, tiny interstices between the various components may lead to leaking problems under high water pressure.
Another conventional and yet more recently developed structure of a pair of diving masks is shown in
Referring to
(1) providing a precision mold at a step 40, wherein the mold has divided spaces to facilitate injection of different molding materials;
(2) injecting two materials having different levels of hardness at a step 41, wherein the materials are injected separately into the precision mold so as to be formed;
(3) producing a cover body of the two materials at a step 42, wherein the cover body of the two materials (different levels of hardness) is released from the mold; and
(4) assembling the cover body with a lens and a plastic outer frame at a step 43, so as to produce a final product of the diving masks.
However, the manufacturing process described above has the following drawbacks. First of all, during the manufacturing process of the diving masks, the molding materials are injected into the same mold. Consequently, the mold must have high precision and, as a result, a high cost. Further, during injection, if the different materials have a great temperature difference, the necessary cooling time will be increased, thereby lengthening the manufacturing process and slowing down production speed. In addition, installation of the plastic outer frame after the lens is fitted into a rim of the masks only increases the difficulty in production without eradicating the leaking problem.
Moreover, the use of two different materials demands not only complicated logistic management but also modification of equipment, which also adds to the cost of the prior art diving masks.
A primary objective of the present invention is to provide a pair of integrally formed, multicolor diving masks characterized by being made with a plurality of molds, wherein a silica gel of different colors is molded separately in the different molds in combination with a lens.
The invention as well as a preferred mode of use, further objectives and advantages thereof will be best understood by referring to the following detailed description of an illustrative embodiment in conjunction with the accompanying drawings, wherein:
Referring to
(1) At a step 70, a skirt 52 of a cover body 50 is injection molded in a fist mold, wherein the skirt 52, as shown in
(2) At a step 71, an adhesive is applied to an edge of the skirt 52 and an edge of a lens 53. Referring to
(3) At a step 72, the skirt 52 and the lens 53 are placed in a second mold so as to injection mold the remaining portion of the cover body 50, wherein the remaining portion mainly includes an outer cover 51, as shown in
(4) At a step 73, the cover body 50 of the diving masks is integrally formed in the second mold, wherein the skirt 52 previously made from the first mold is further coated in the second mold. By virtue of the adhesive and a bonding effect of the molding material during the forming process, the diving masks thus made shall have a sturdy structure.
(5) At a step 74, a strap 60 is made and installed, wherein the strap 60, as shown in
Thus, as shown in
An advantage of the present invention is an improved overall appearance with enhanced color design, plus a clean and securely set lens. This is achieved by the use of two molds and a two-stage injection molding process, which allows the diving masks to be made of a silica gel of different colors.
Another advantage of the present invention is that the pair of diving masks is integrally formed, so that the plastic outer frame required in the prior art can be dispensed with, thereby effectively solving the leaking problem of conventional diving masks.
The present invention is developed from an innovative concept and, according to experiments conducted by the inventor, is capable of delivering the intended effects. As the present invention meets the requirements of industrial applicability, novelty and utility for patent application, an application for patent of the present invention is hereby lawfully filed for examination.
