JP3082889U - Pad structure by injection molding - Google Patents

Abstract

(57) [Problem] To provide a pad structure by injection molding that is low in cost, has a long life, is excellent in appearance, and is comfortable to use. A protective groove (12) is used to relieve a force applied to a root (111) of a pad body (11) due to deformation, and to protect a pad body (111) from the outside by the protective groove (12) even in the event of a crack. , The entire pad body 11 is covered by the mediating layer 30, and the mediating layer 30 is inserted into the pad body base 10 and fixed, so that the connection with the pad body 11 is greatly enhanced. In addition, with these structures, the entire structure forms a hierarchy and is visually beautiful.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a pad structure formed by injection molding and is mainly used for a mouse pad, a keyboard pad, a chair seat, and the like. The structure is mainly a pad body protruding from the pad base. The base of the pad body forms an annular protective groove at the portion where the pad body is connected to the pad body, and an intermediate layer is provided on the pad body. It is divided into hierarchies and has a three-dimensional appearance. It is low in cost, has a relatively long life in use, and is also visually beautiful.

[0002]

[Prior art]

 As shown in FIG. 1, in a known technique, the pad is used as a structure of a mouse pad or a keyboard. The mouse pad has a pad body 92 protruding from a pad body base 91, and these are relatively hard. It is integrally molded from the above material. Some of the materials shown in FIG. 2 employ relatively flexible materials.

[0003]

[Problems to be solved by the invention]

 However, in the known structure as described above, since the pad body 92 is formed of a relatively hard material, the pad body 92 cannot provide a comfortable feeling when operating the mouse with the hand placed. On the other hand, in the case of a relatively soft material, the root portion 93 receives a force due to deformation, so that the root portion 93 is cracked due to long-term use, and not only the appearance is poor but also the pad body 92 itself cannot be used. There are even things.

As shown in FIGS. 3 and 4, a receiving groove 94 is formed in a pad body base 91, and a pad body 92 is fitted into the receiving groove 94 to divide the pad body base 91 into a pad body 92. Accordingly, a material in which the material of the pad body base 91 is relatively hard and the material of the pad body 92 can be relatively soft has been devised, and some of them provide a material having a long life and a comfortable use. There is, however, the cost of this structure, but it also has the disadvantage of preparing two molds, molding them separately, and then assembling them. In view of the above drawbacks, the present invention provides a pad structure formed by injection molding according to the present invention, which is low in cost, has a relatively long life in use, is excellent in appearance, and is comfortable to use.

[0005]

[Means for Solving the Problems]

 First, by providing the protective groove, the force applied to the root of the pad by deformation is reduced, and even in the event of a crack, the protective groove hides the root of the pad from the outside, extending the life in use. Further, the pad body is covered with the mediating layer, and the mediating layer is inserted into the base of the pad body and fixed, so that the connection of the pad body is greatly enhanced. Further, by separating the pad base and the pad body by the protective layer, the overall structure becomes a hierarchical structure, thereby further visually attracting consumers.

[0006]

[Embodiment of the invention]

 As shown in FIGS. 5 and 6, the present invention has a flexible pad body 11 projecting above the pad base 10. The feature is that at the place where the pad base 10 intersects with the pad body 11, there is a protection groove 12 forming an annular wall shape, and the root 111 of the pad body 11 is located at the bottom of the protection groove 12. Is provided. Further, the outer periphery of the pad body 11 is covered with a bonding layer 30 bonded thereto, and the bonding layer 30 enters into the protection groove 12 and is inserted into the pad base 10. The intermediate layer 30 has a smoothing surface for placing a hand, and also has a reinforcing effect as if the intermediate layer 30 had a reinforcing bar inserted into the ground, so that the structure of the pad body 11 was effective. Has been strengthened.

As shown in FIG. 6, when the user places his / her hand on the pad base 10 and moves the mouse, the pad body 11 is first deformed and peristaltic to adhere to the protection groove 12. . Regarding the deformation amount of the root portion 111 of the pad body 11, the root portion 111 is not affected by a strong instantaneous shearing stress as shown in FIG. Is unlikely to occur. Further, the pad body 11 is flexible, and even if a crack occurs in the root portion 111, the root portion 111 is housed in the protective groove 12, so that the overall appearance of the present invention is not affected. Further, since the pad body 11 is fixed and still peristaltic by the mediation layer 30, even if some cracks are formed in the root portion 111, the root portion 111 can still be used.

As shown in FIGS. 7 and 8, in the manufacturing process of the present invention, a material is injected into the mold 20 in two separate steps and is integrally molded. The mold 20 has a main mold part 21 which is depressed downward, and a sub mold part 22 which is annularly installed on the outer periphery of the main mold part 21. Are separated by the separator 23, and the upper end of the separator 23 is lower than the upper end of the sub-mold 22. Further, as shown in FIGS. 8 and 9, the manufacturer first coats the entire inner surface of the main mold portion 21 to form the intermediate layer 30, or the main mold portion 21 has a cloth or a thin film having flexibility. Thus, the intermediate layer 30 is directly laid, and the edge of the intermediate layer 30 is substantially aligned with the upper end of the main mold portion 21 or the upper end of the intermediate layer 30 is provided in a hook-like shape provided in advance. At 31, the upper portion of the main mold portion 21 is hung, and a certain amount of material is injected to fill the inside of the main mold portion 21 by eight to form a colloidal pad body 11. Are projected from the pad body 11. The colloidal material is composed of a combination of two kinds of polyurethanes or silicon as a raw material, and the curing agent mixed with this is made of two kinds of raw materials of polyether and MDI (Methylene dilphenyl diisocyanate). The body 11 is proportionately mixed so as to perform good peristalsis (the material is not within the scope of the present invention and will not be described).

As shown in FIG. 10, the manufacturer injects a fixed amount of a colloid material homologous to the pad body 11 into the sub-mold portion 22 and the main mold portion 21 to form the pad base 10, Since the upper end of the mediation layer 30 protrudes from the pad body 11, the mediation layer 30 is naturally inserted into the pad base 10, thereby enhancing the connection effect between the mediation layer 30 and the pad base 10. The purpose is achieved. Also, in the connection between the hook edge 31 of the mediation layer 30 and the pad base 10, the mediation layer 30 is more stably integrated with the pad base 10, and can effectively receive forces in two directions. become. The proportion of the hardener of the colloid material of the pad base 10 is made larger than that of the colloid material of the pad body 11 so that the pad base 10 is harder than the pad body 11, The protective groove 12 is molded together with the standard pattern.

As shown in FIG. 11, another embodiment of the present invention mainly describes that the shape of the pad base 10 is arbitrarily changed, and the present invention relates to a manufacturing process. The operation plate 40 is provided at the bottom of the sub-mold portion 22 so that the operation plate 40 is formed at the upper end of the pad base 10 to facilitate the operation of the mouse. It can also be used for sitting on a chair.

[0011]

[Effect of the invention]

 According to the present invention, cracks are less likely to be formed at the root of the pad body, and even if some cracks are formed, the pad can be used continuously without affecting the appearance, and the protective layer provided between the pad body and the pad base. Has become a layer and is visually beautiful, so the product value has been further increased, and automation of production has been achieved by injection molding of the material twice. With the appropriate manufacturing method, the goal of reducing production costs was achieved at once.

[Brief description of the drawings]

FIG. 1 is an external view of a known structure (1).

FIG. 2 is a sectional view of a known structure (1).

FIG. 3 is a structural exploded view of a known structure (2).

FIG. 4 is an explanatory sectional view of a structure of a known structure (2).

FIG. 5 is a sectional view of a three-dimensional local portion of the structure of the present invention;

FIG. 6 is an operation explanatory view in a sectional view of the present invention.

FIG. 7 is a three-dimensional explanatory view of the mold having the structure of the present invention.

FIG. 8 is a sectional view of the mold according to the present invention.

FIG. 9 is an explanatory view of an embodiment when the present invention is used to mold a pad body in a mold.

FIG. 10 is an explanatory view of an embodiment when the pad base is molded in a mold according to the present invention.

FIG. 11 is an explanatory view of another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Pad base 11 Pad body 111 Root 12 Protective groove 20 Die 21 Main part 22 Sub-type part 23 Separator 30 Intermediate layer 31 Hook edge 40 Operation plate 91 Pad base 92 Pad body 93 Root 94 Storage groove

Claims (5)

[Utility model registration claims] In a pad structure formed by injection molding in which a pad body protrudes from a base of the pad body, a portion of the pad body base connected to the pad body is an annular wall-shaped protection groove. Wherein the pad body root is formed at the bottom of the protection groove, and the outer periphery of the pad body is covered with an integral intermediate layer. 2. The pad structure formed by injection molding according to claim 1, wherein an edge of said mediation layer is inserted into and fixed to a base of the pad body. 3. The edge of the mediating layer is a hook-shaped edge,
2. The pad structure by injection molding according to claim 1, wherein said hook-shaped edge is inserted into and fixed to a base of the pad body. 4. The intermediate layer is first provided in a main mold part, the pad body is filled in about eight minutes of the intermediate layer, and the pad body base is molded in a sub mold part. The sub-mold portion is annular and provided on the outer peripheral edge of the main-mold portion, the main-mold portion and the sub-mold portion are separated by a separator, the protection groove is molded, and the intermediate layer is formed in the pad body base. The upper end of the separator is lower than the upper end of the sub-mold portion to be inserted, and when molding the pad body base in the sub-mold portion to strengthen the connection between the mediating layer and the pad body base. 2. The method according to claim 1, wherein the intermediate layer is completely covered in the base of the pad body, and a hook-shaped edge provided at an edge of the intermediate layer slightly exceeds an edge of the separator. Pad structure by injection molding. 5. The pad structure formed by injection molding according to claim 1, wherein an operation plate is provided at an upper end of said pad base.