Mobile phone sheath button periphery decoration sheet structure

Abstract

The utility model relates to the technical field of electronic equipment accessories, in particular to a mobile phone sheath key periphery decoration sheet structure. The key comprises a main body shell, a decoration piece and a key, the decoration piece is installed on the main body shell, a key hole is formed in the decoration piece, the key is connected to the decoration piece, the bottom of the key penetrates through the key hole and then is connected with the main body shell, the decoration piece is composed of a metal piece and a PC piece, the metal piece is connected with the PC piece, the bottom of the PC piece is connected with the main body shell, and the metal piece makes contact with the key. According to the structure, the decorating part is divided into the upper part and the lower part, the upper part is made of thin aluminum alloy, the lower part is connected with the aluminum alloy through the PC sheet and the hot melt adhesive, the resilience is increased due to the thin aluminum alloy, the PC sheet has high impact strength and high resilience strength, and the connecting force between the PC sheet and the main body shell is larger through the hot melt adhesive, so that the connecting effect is better; and fixation can be realized from verification to production test, and falling is not liable to occur.

Description

Technical Field

[0001] This utility model relates to the field of electronic device accessories technology, and in particular to a decorative piece structure around the buttons on a mobile phone case. Background Technology

[0002] Decorative pieces are decorative sheet structures placed around the buttons on phone cases during button installation, serving a decorative purpose. To fit the button structure and achieve a metallic feel, decorative pieces are made of metal. Current manufacturing processes typically use a single sheet of aluminum alloy. However, with an aluminum alloy thickness of approximately 0.55mm and a small cross-sectional area, it's difficult to allow for flexible restoration of the original geometric shape after twisting. Furthermore, the bonding strength between the aluminum alloy and the PC material of the phone case using hot melt adhesive is inherently weak. Figure 5 During the torsion test of the phone case shown, the decorative piece easily falls off, failing to achieve true fixation and exhibiting poor stability, leading to the need for rework or scrapping of the product. Utility Model Content

[0003] This utility model provides a decorative piece structure around the buttons on a mobile phone case, aiming to solve the problem that the entire aluminum alloy structure will fall off during torsion testing.

[0004] This utility model provides a decorative piece structure around the button of a mobile phone case, including a main shell, a decorative piece, and a button. The decorative piece is installed on the main shell and has a button hole. The button is connected to the decorative piece, and the bottom of the button passes through the button hole and is connected to the main shell. The decorative piece is composed of a metal sheet and a PC sheet. The metal sheet and the PC sheet are connected, and the bottom of the PC sheet is connected to the main shell. The metal sheet is in contact with the button.

[0005] As a further improvement of this utility model, the outer surface of the main body shell is covered with a double-layer PU layer. The outer layer of the PU layer on the side of the main body shell is provided with decorative holes, and the inner layer of the PU layer corresponding to the decorative holes is provided with riveting parts. The decorative piece is connected in the decorative holes, and the bottom of the button is connected to the riveting parts.

[0006] As a further improvement of this utility model, the main shell is made of PC material.

[0007] As a further improvement of this utility model, the metal sheet is made of aluminum alloy.

[0008] As a further improvement of this utility model, the button is made of aluminum alloy.

[0009] As a further improvement of this utility model, the metal sheet is connected to the PC sheet by hot melt adhesive.

[0010] As a further improvement of this utility model, the bottom of the PC sheet is connected to the main body shell by hot melt adhesive.

[0011] As a further improvement of this utility model, the thickness ratio of the metal sheet to the PC sheet is 3:2.5.

[0012] The beneficial effects of this utility model are: the decorative part is divided into upper and lower parts, the upper part is made of thinner aluminum alloy, and the lower part is made of PC sheet connected to aluminum alloy with hot melt adhesive. The thinner aluminum alloy increases the elasticity, and the PC sheet has high impact resistance and elasticity. In addition, the hot melt adhesive between the PC sheet and the main shell has a greater connection force and a better connection effect. From verification to production testing, it can be fixed and is not easy to fall off. Attached Figure Description

[0013] Figure 1 This is a structural diagram of the mobile phone case in this utility model;

[0014] Figure 2 This is a cross-sectional view of the AA region of the mobile phone case in this utility model;

[0015] Figure 3 This is a utility model Figure 2 Enlarged view of the structure of region B in the middle;

[0016] Figure 4 This is a structural diagram of the decorative piece in this utility model;

[0017] Figure 5 This is a schematic diagram of the torsion test direction of the mobile phone case in this utility model. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0019] like Figures 1 to 4 As shown, this utility model discloses a decorative piece structure for the button perimeter of a mobile phone case, comprising a main shell 1, a decorative piece 2, and a button 3. The decorative piece 2 is mounted on the main shell 1 and has a button hole 9. The button 3 is connected to the decorative piece 2, with its bottom passing through the button hole 9 and connecting to the main shell 1. The decorative piece 2 is composed of a metal sheet 4 and a PC sheet 5, with the metal sheet 4 connected to the PC sheet 5. The bottom of the PC sheet 5 is connected to the main shell 1, and the metal sheet 4 contacts the button 3. The original single aluminum alloy sheet is adjusted to a structure with two joined sides: a thinner aluminum alloy sheet on top and a PC sheet 5 on the bottom. Utilizing the high resilience of the thin aluminum alloy sheet and the impact resistance of the PC sheet 5, the combined decorative piece 2 can meet the requirements of the torsion test. The button 3 passes through the decorative piece 2 and is riveted to the main shell 1 for installation.

[0020] The main body shell 1 is covered with a double-layer PU layer 6. The outer layer of the PU layer 6 on the side of the main body shell 1 has decorative holes, and the inner layer of the PU layer 6 corresponding to the decorative holes has a riveting piece 8. The decorative piece 2 is connected to the decorative hole, and the bottom of the button 3 is connected to the riveting piece 8. The PC material main body shell 1 is geometrically covered with PU layers 6 inside and out to form the finished main body shell 1. The bottom of the button 3 is riveted to the riveting piece 8 of the finished main body shell 1. Finally, the decorative piece 2 assembly is hot-pressed onto the finished main body shell 1. The order is as follows: the top layer is aluminum alloy with a thickness of 0.3mm, the bottom layer is hot-pressed with hot melt adhesive 7 and PC sheet 5 with a thickness of 0.25mm, and finally hot melt adhesive 7 is applied.

[0021] The main shell 1 is made of PC material. The bottom of the PC sheet 5 is connected to the main shell 1 with hot melt adhesive 7. After the PC sheet 5 of the decorative piece 2 is connected to the PC material main shell 1 with hot melt adhesive 7, the connection between the two is relatively stronger.

[0022] Metal sheet 4 is connected to PC sheet 5 via hot melt adhesive 7. Metal sheet 4 is made of aluminum alloy. The aluminum alloy sheet and PC sheet 5 are bonded together using a hot pressing process with hot melt adhesive 7 to form decorative sheet 2.

[0023] The thickness ratio of metal sheet 4 to PC sheet 5 is 3:2.5. The decorative sheet 2 has an aluminum alloy top with a thickness of 0.3mm and a PC sheet 5 bottom with a thickness of 0.25mm. Hot melt adhesive 7 is applied to the top of the PC sheet 5 and hot-pressed together with the aluminum alloy top. Hot melt adhesive 7 is also applied to the bottom of the PC sheet 5 for hot-pressing together with the PC material of the main shell 1, thus completing the decorative sheet 2 assembly.

[0024] The area around button 3 is surrounded by an anodized aluminum alloy decorative piece 2, which gives it a more textured, high-end, and aesthetically pleasing appearance. However, this individual decorative piece 2 is attached to the main body shell 1 (PC material) with adhesive. After the product is finished, the button... Figure 5 The decorative piece 2 is prone to detachment when twisted and bent in the direction of the arrow shown. This is because the total thickness of the aluminum alloy decorative piece 2 is only 0.55mm. With an aluminum alloy thickness of approximately 0.5mm and a small cross-sectional area, it is difficult for it to elastically return to its original geometric shape after twisting. Furthermore, the connection between the aluminum and PC using hot melt adhesive is inherently weak. Therefore, the decorative piece 2 easily detaches during the twisting test of the button 3 head. This invention modifies the structure of the decorative piece 2, dividing it into two layers. The upper layer is still aluminum alloy, but with a thickness of 0.3mm. The lower layer is a 0.25mm PC sheet 5, connected by hot melt adhesive 7. This approach utilizes the material properties and thickness to alter the elasticity principle. The 0.3mm thickness of the aluminum alloy significantly improves its twisting resilience within a certain range. Additionally, the PC sheet 5 has high impact resistance and resilience. Furthermore, the hot melt adhesive 7 provides a stronger connection between the PC sheet 5 and the PC material of the main shell 1, resulting in a better connection effect. From verification to production twisting tests, it can be fixed and is not prone to detachment, meeting the structural fixation requirements.

[0025] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the protection scope of the present invention.

Claims

1. A decorative piece structure around the buttons on a mobile phone case, characterized in that, The device includes a main shell, a decorative piece, and a button. The decorative piece is mounted on the main shell and has a button hole. The button is connected to the decorative piece, and its bottom passes through the button hole and connects to the main shell. The decorative piece is composed of a metal sheet and a PC sheet. The metal sheet and the PC sheet are connected, and the bottom of the PC sheet is connected to the main shell. The metal sheet is in contact with the button.

2. The decorative piece structure around the button on the mobile phone case according to claim 1, characterized in that, The main body shell is covered with a double-layer PU layer. The outer layer of the PU layer on the side of the main body shell is provided with decorative holes, and the inner layer of the PU layer corresponding to the decorative holes is provided with riveting parts. The decorative piece is connected in the decorative holes, and the bottom of the button is connected to the riveting parts.

3. The decorative piece structure around the button on the mobile phone case according to claim 1, characterized in that, The main shell is made of PC material.

4. The decorative piece structure around the button on the mobile phone case according to claim 1, characterized in that, The metal sheet is made of aluminum alloy.

5. The decorative piece structure around the button on the mobile phone case according to claim 1, characterized in that, The button is made of aluminum alloy.

6. The decorative piece structure around the button on the mobile phone case according to claim 1, characterized in that, The metal sheet is connected to the PC sheet by hot melt adhesive.

7. The decorative piece structure around the button on the mobile phone case according to claim 1, characterized in that, The bottom of the PC sheet is connected to the main shell by hot melt adhesive.

8. The decorative piece structure around the button on the mobile phone case according to claim 1, characterized in that, The thickness ratio of the metal sheet to the PC sheet is 3:2.5.

Images