Smartphone cases

A smartphone case with separate case back plate and frame connected through holes and optional mortise and tenon structure addresses monotonous appearance and high mold costs, improving bonding strength and visual appeal.

JP3253310UActive Publication Date: 2025-10-20ケースタグラム リミテッド
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Patent Information

Application Number
JP2025002877U
Authority / Receiving Office
JP · JP
Patent Type
Utility models
Current Assignee / Owner
Priority Date
2024-09-06
Filing Date
2025-08-22
Publication Date
2025-10-20
Estimated Expiration
2035-08-22

AI Technical Summary

Technical Problem

Existing smartphone cases manufactured as a single unit using conventional injection molding have a monotonous appearance and high mold manufacturing costs, lacking appeal to diverse tastes and requiring improved bonding strength between separate components.

Method used

The smartphone case consists of a case back plate and case frame connected via through-holes and connecting parts, with a male-female fitting method and optional mortise and tenon structure, allowing separate manufacturing and enhanced bonding strength.

Benefits of technology

This design enhances connection strength and visual three-dimensional effect while simplifying manufacturing, enabling use of different colored materials and reducing mold costs.

✦ Generated by Eureka AI based on patent content.

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Abstract

To provide a smartphone case that can integrally connect two separated case back plates and a case frame, and has strong bonding strength and a visual three-dimensional effect. [Solution] The smartphone case includes a case back plate 1 and a case frame 2 fixedly connected to the case back plate, the case back plate and the case frame being two separately manufactured components, with a plurality of penetrations 3 spaced apart around the periphery of the case back plate, and a number of connecting portions 8 spaced apart on one side of the case frame, the same number as the penetrations on the case back plate, and each connecting portion fits into one of the penetrations, thereby fixedly connecting the case back plate and the case frame together. The case back plate and the case frame are fixedly connected together using a male-female fitting method between the plurality of penetrations and the connecting portions installed on the case frame, which not only improves the connection strength between the case back plate and the case frame but also simplifies the manufacturing process of the smartphone case.
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Description

[Technical Field]

[0001] The present invention relates to the technical field of smartphone cases, and more particularly to a smartphone case in which the case back plate and the case frame of the completed part are fixedly connected together. [Background technology]

[0002] In the prior art, a smartphone case includes a case back and a case frame, which are generally manufactured as a single unit using a conventional injection molding process. Smartphone cases manufactured in this manner have a monotonous and outdated appearance, lacking enthusiasm among today's young people with diverse tastes. Furthermore, the manufacturing costs of the molds used to manufacture such smartphone cases are relatively high. Summary of the Invention [Problem to be solved by the invention]

[0003] The technical problem that this invention aims to solve is to provide a smartphone case that can connect two separate case back panels and a case frame together, with strong bonding strength and a visual three-dimensional effect. [Means for solving the problem]

[0004] In order to solve the above technical problems, the technical solutions adopted by the present invention are as follows:

[0005] The smartphone case of the present invention includes a case back plate and a case frame fixedly connected to the case back plate, wherein the case back plate and the case frame are two separately manufactured components, a plurality of through holes are installed at intervals around the periphery of the case back plate, and a number of connecting parts equal to the number of through holes on the case back plate are installed at intervals on one side of the case frame, and each connecting part is fitted into one of the through holes, thereby fixedly connecting the case back plate and the case frame together.

[0006] The case frame is an injection molded part that is connected to the case back by an injection molding process.

[0007] The case frame is a separately manufactured member that is connected to the case back via an adhesive structure.

[0008] The through-holes are circular, elliptical or regular polygonal holes, and the outer diameter of the through-holes is 0.5 to 2.5 mm.

[0009] The through-hole is an elliptical hole, and the maximum outer diameter of the elliptical hole is 1.5 to 2.5 mm, and the minimum outer diameter of the elliptical hole is 0.5 to 1.0 mm.

[0010] The through-hole is an elliptical hole, and the size of the elliptical hole is 0.9 mm x 2.0 mm.

[0011] The distance between two adjacent penetrations is 5 to 25 mm.

[0012] The distance between two adjacent penetrations is 10 to 15 mm.

[0013] The case frame further includes a covering portion, the covering portion and the connecting portion being integral with each other, and the covering portion completely covering both end openings of the through-holes in the case back plate.

[0014] A mortise and tenon structure is further provided between the case back plate and the case frame to connect them together. [Effects of the Invention]

[0015] Compared to the prior art, in this invention, the case back plate and case frame, which are separated from each other, are fixedly connected together using a male-female fitting method between multiple penetration holes installed on the case back plate and connecting parts installed on the case frame, which not only improves the connection strength between the case back plate and the case frame but also has the advantage of simplifying the manufacturing process of the smartphone case. At the same time, even if the case back plate and the case frame are made of transparent materials of different colors, the male-female fitting structure of the penetration holes and connecting parts can give the user a relatively strong visual three-dimensional effect. [Brief explanation of the drawings]

[0016] [Figure 1] FIG. 1 is a schematic diagram of the back panel of the smartphone case according to the present invention. [Figure 2] FIG. 2 is a partial side view of the smartphone case in FIG. 1 when placed horizontally. [Figure 3] FIG. 3 is an enlarged schematic view of part A in FIG. [Figure 4] FIG. 4 is an enlarged schematic diagram of the mortise and tenon joint structure between the case back plate and the case frame. DETAILED DESCRIPTION OF THE INVENTION

[0017] As shown in FIGS. 1 to 4, the smartphone case of the present invention includes a case back plate 1 and a case frame 2.

[0018] 1 Case Back 1 The case back 1 is a pre-fabricated finished part and may be made of plastic or metal, and may be a single color or a combination of multiple colors.

[0019] A lens frame 6 and a magnetic attraction ring 7 of a conventional structure are provided on the case back plate 1. The case back plate 1 is rectangular in shape and has an annular groove 4 along its periphery. A plurality of through-holes 3 are spaced apart within the groove 4 and penetrate the case back plate 1 along its periphery. The through-holes 3 may have various shapes, including circular holes, elliptical holes, and regular polygonal holes.

[0020] The maximum outer diameter of the through-holes 3 is 2.5 mm. In this invention, the holes are preferably elliptical, with the maximum outer diameter b of the elliptical holes being 1.5 to 2.5 mm and the minimum outer diameter a of the elliptical holes being 0.5 to 1.0 mm, preferably a × b = 0.9 mm × 2.0 mm. The spacing h between two adjacent through-holes 3 is 5 to 25 mm, preferably 10 to 15 mm. By setting the data for the diameter of the through-holes 3 and the spacing between two adjacent through-holes 3, it is possible to ensure a relatively high connection strength when the case back plate 1 and the case frame 2 are combined, and also to prevent the formation of impression lines, which would otherwise occur when multiple through-holes 3 are installed, from tearing the edges and main body of the case back plate 1.

[0021] Furthermore, in order to improve the joining strength between the case back plate 1 and the case frame 2, a mortise and tenon structure 5 capable of joining the two can be installed in a part of the area between the case back plate 1 and the case frame 2, for example, in a corner.

[0022] 2 Case Frame 2 The case frame 2 is of the following two types.

[0023] 1) Molten plastic is injected into a frame mold attached to the case back plate 1 by an injection molding process.

[0024] When the molten plastic injected into the frame mold cools, connection portions 8 are formed around the case frame 2 in the same number as the through holes 3, and these connection portions 8 are filled into the corresponding through holes 3 in a one-to-one correspondence, thereby joining the case back plate 1 and the case frame 2 together.At the same time, when the molten plastic cools, a ring-shaped connection rib is formed in the groove 4 of the case back plate 1, which is connected to the case back plate 1.

[0025] 2) The case frame 2 is a pre-fabricated finished product, and has the same number of connection parts 8 as the through-holes 3 around its periphery. When assembling the smartphone case, chemical adhesive is applied around the periphery of the case frame 2, and then the connection parts 8 on the case frame 2 are inserted one by one into the corresponding through-holes 3, thereby fixedly connecting the case back plate 1 and the case frame 2 together. [Explanation of symbols]

[0026] 1 Case back 2 case frames 3 Penetration 4 groove 5. Mortise and tenon construction 6 Lens Frame 7 Magnetic Adsorption Ring 8 Connection 9 Covering part

Claims

1. A smartphone case including a case back plate (1) and a case frame (2) fixedly connected to the case back plate (1), The case back plate (1) and the case frame (2) are two separately manufactured components, and a plurality of through holes (3) are provided at intervals around the periphery of the case back plate (1), and connection portions (8) equal in number to the through holes (3) on the case back plate (1) are provided at intervals on one side of the case frame (2), and each connection portion (8) is fitted into one of the through holes (3), thereby fixedly connecting the case back plate (1) and the case frame (2) together.

2. 2. The smartphone case according to claim 1, wherein the case frame (2) is an injection-molded part that is connected to the case back plate (1) by an injection molding process.

3. The smartphone case according to claim 1, characterized in that the case frame (2) is an independently manufactured member and is connected to the case back plate (1) via an adhesive structure.

4. The smartphone case according to claim 2, characterized in that the through-hole (3) is a circular hole, an elliptical hole, or a regular polygonal hole, and the outer diameter of the through-hole (3) is 0.5 to 2.5 mm.

5. The smartphone case according to claim 2, characterized in that the through portion (3) is an elliptical hole, the maximum outer diameter of the elliptical hole is 1.5 to 2.5 mm, and the minimum outer diameter of the elliptical hole is 0.5 to 1.0 mm.

6. The smartphone case according to claim 2, wherein the through-hole (3) is an elliptical hole having a size of 0.9 mm x 2.0 mm.

7. The smartphone case according to any one of claims 4 to 6, characterized in that the distance between two adjacent through-holes (3) is 5 to 25 mm.

8. The smartphone case according to any one of claims 4 to 6, characterized in that the distance between two adjacent through-holes (3) is 10 to 15 mm.

9. The smartphone case according to any one of claims 4 to 6, characterized in that the case frame (2) further includes a covering portion (9), the covering portion (9) and the connecting portion (8) are of an integral structure, and the covering portion (9) completely covers both end openings of each of the through portions (3) of the case back plate (1).

10. The smartphone case according to any one of claims 4 to 6, characterized in that a mortise and tenon structure (5) is further provided between the case back plate (1) and the case frame (2) to connect them.