Waterproof mobile phone key structure
By fixing the contact sleeve to the waterproof ring and using two-color injection molding, the problem of traditional waterproof rings easily falling off is solved, achieving a more stable waterproof effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-14
- Publication Date
- 2026-04-03
AI Technical Summary
Traditional mobile phone buttons have small and flexible waterproof rings that are difficult to install automatically and are prone to falling off during assembly, affecting the phone's waterproof performance.
The contact sleeve and waterproof ring are fixedly connected by two-color injection molding to ensure a tight bond between the waterproof ring and the button contact. The design of the contact sleeve and the fixing post, as well as the limiting groove, restricts the displacement of the waterproof ring and increases friction to improve installation stability.
The connection stability between the waterproof ring and the button contacts has been enhanced, reducing the risk of the waterproof ring falling off and improving the waterproof performance of the side buttons on the phone.
Smart Images
Figure CN224082355U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mobile phone accessories, and in particular to a waterproof mobile phone button structure. Background Technology
[0002] In today's fiercely competitive mobile phone industry, consumers have increasingly stringent requirements for mobile phone quality, and waterproofing has become an indispensable basic feature. With continuous technological innovation, waterproofing ratings are also steadily increasing.
[0003] like Figure 1 The traditional side button shown includes a button cap and button contacts on the back of the button cap. The button contacts have a silicone waterproof ring on their periphery and a slot for engaging the waterproof ring. During assembly, the waterproof ring is fitted into the slot, and then the contact is inserted into the phone, so that the engaging parts on both sides of the contact engage with the inner side wall of the button's mounting hole. After installation, the button cap protrudes from the mounting hole of the phone casing for the user to press. Below the button cap is a limiting plate for the contact to be inserted. The limiting plate has a through hole for the contact to be inserted, and the waterproof ring is blocked by the through hole and is located inside the limiting plate.
[0004] However, waterproof rings are typically only a few millimeters in diameter, extremely small in size, and soft in texture, making them difficult for automated equipment to precisely grasp and install. Therefore, they can only be installed manually, one by one. Furthermore, the waterproof rings are fitted into narrow slots at the bottom of the buttons, and are only prevented from falling off through a tight fit, rather than being fully bonded.
[0005] Therefore, during the subsequent assembly of the side buttons into the casing, when the waterproof ring is subjected to friction from other structures of the phone, it is very easy for the waterproof ring to shift in position or even fall off, which will seriously affect the phone's waterproof performance. Utility Model Content
[0006] To improve the installation stability of waterproof structures and reduce the occurrence of waterproof structure detachment, this utility model provides a waterproof mobile phone button structure.
[0007] This utility model provides a technical solution that adopts the following approach:
[0008] A waterproof mobile phone button structure includes a button cap and button contacts connected to the button cap. Each button contact includes a fixing post and a contact sleeve fitted onto the fixing post. The fixing post is integrally connected to the button cap. The contact sleeve is cylindrical, with one end closed so that its inner bottom wall abuts against the end of the fixing post, and the other end open for the fixing post to be inserted. The inner ring of the contact sleeve abuts against the outer circumference of the fixing post. A waterproof ring is fixedly connected to the contact sleeve. When the contact sleeve is fitted onto the fixing post, the waterproof ring is fitted onto the outer circumference of the fixing post, and the outer diameter of the waterproof ring is larger than the outer diameter of the contact sleeve.
[0009] The contact sleeve is fixedly connected to the waterproof ring, and the inner wall of the contact sleeve abuts against the peripheral wall of the fixing post, providing a larger contact area for the connection between the waterproof ring and the button contact, thus providing greater friction and making the waterproof ring less prone to misalignment. Furthermore, when the waterproof ring is subjected to a force moving away from the button cap, the contact sleeve simultaneously resists the displacement of the waterproof ring; when the waterproof ring is subjected to a force moving towards the button cap, the top of the contact sleeve is blocked by the fixing post, making it difficult for the waterproof ring to move towards the button cap. This further restricts the movement of the waterproof ring, resulting in better waterproofing of the phone's side buttons.
[0010] Preferably, the contact sleeve and the waterproof ring are integrally injection molded together.
[0011] By using a two-color injection molding machine, the plastic contact sleeve is first injected and then the waterproof ring is injected, so that the two parts are integrally injection molded, making them tightly connected, thus avoiding the disadvantage of easy separation in traditional structures.
[0012] Preferably, the waterproof ring is a TPU ring.
[0013] TPU, or thermoplastic polyurethane, is a high-performance elastomer material belonging to the polyurethane family. It combines the elasticity of rubber with the processing properties of plastics, exhibiting excellent abrasion resistance, oil resistance, low-temperature resistance, and tear resistance.
[0014] Preferably, the waterproof ring is also integrally connected with an extension portion, and the button contact has a groove for the extension portion to be inserted into, and the extension portion is located on the side of the waterproof ring away from the contact sleeve.
[0015] The fit between the extension and the groove makes the connection between the waterproof ring and the button contact more secure, and the extension can restrict the movement of the waterproof ring on the side away from the contact sleeve, making the installation of the waterproof ring more stable and making it less likely for the waterproof ring to slide on the fixing post.
[0016] Preferably, the side wall of the fixing column has an annular limiting groove, the contact sleeve and the waterproof ring are fitted onto the periphery of the limiting groove, and the waterproof ring abuts against the bottom wall of the limiting groove.
[0017] The limiting groove restricts the installation position of the waterproof ring and supports it. When the waterproof ring is subjected to external force, the bottom wall of the limiting groove supports the waterproof ring, allowing it to be stably installed on the periphery of the fixed column.
[0018] Preferably, a connecting part is provided between the waterproof ring and the extension part, and the side wall of the fixing column has an avoidance groove for the connecting part to be embedded.
[0019] The clearance groove avoids the direct connection between the waterproof ring and the extension, and the connection part is embedded in the clearance groove, increasing the connection area between the waterproof ring and the button contact, which helps to further improve the installation stability of the waterproof ring and make the waterproof ring and the button contact more tightly connected.
[0020] Preferably, the length direction of the groove is consistent with the length direction of the button contact, and the extension is elongated.
[0021] In summary, this utility model has the following beneficial technical effects:
[0022] The contact sleeve is fixedly connected to the waterproof ring. The mutual abutment between the contact sleeve and the fixing post provides a larger contact area for the connection between the waterproof ring and the button contact, thus providing greater friction and making the waterproof ring less prone to misalignment. Furthermore, when the waterproof ring is subjected to a force moving away from the button cap, the contact sleeve simultaneously resists the displacement of the waterproof ring; when the waterproof ring is subjected to a force moving towards the button cap, the top of the contact sleeve is blocked by the fixing post, making it difficult for the waterproof ring to move closer to the button cap. This further restricts the movement of the waterproof ring, resulting in better waterproofing of the phone's side buttons. Attached Figure Description
[0023] Figure 1 This is a schematic diagram of a traditional waterproof structure.
[0024] Figure 2 This is a schematic diagram of the overall structure of a waterproof mobile phone button structure according to this utility model.
[0025] Figure 3 This is an exploded view of a waterproof mobile phone button structure according to this utility model.
[0026] Explanation of reference numerals in the attached drawings: 1. Keycap; 2. Fixing post; 3. Contact sleeve; 4. Waterproof ring; 5. Extension; 6. Groove; 7. Restriction groove; 8. Connecting part; 9. Clearance groove. Detailed Implementation
[0027] The following is in conjunction with the appendix Figure 2-3 The present invention will be described in further detail below.
[0028] This utility model discloses a waterproof mobile phone button structure.
[0029] Reference Figure 2 as well as Figure 3 A waterproof mobile phone button structure includes a button cap 1 and a button contact connected to the button cap 1. The button contact includes a fixing post 2 and a contact sleeve 3 sleeved on the fixing post 2. The fixing post 2 is integrally connected to the button cap 1. The contact sleeve 3 is cylindrical. One end of the contact sleeve 3 is closed so that its inner bottom wall abuts against the end of the fixing post 2, and the other end is open for the fixing post 2 to be inserted. The inner ring of the contact sleeve 3 abuts against the outer circumference of the fixing post 2. A waterproof ring 4 is fixedly connected to the contact sleeve 3. When the contact sleeve 3 is sleeved on the fixing post 2, the waterproof ring 4 is sleeved on the outer circumference of the fixing post 2. The outer diameter of the waterproof ring 4 is larger than the outer diameter of the contact sleeve 3.
[0030] The contact sleeve 3 is fixedly connected to the waterproof ring 4. The inner wall of the contact sleeve 3 abuts against the peripheral wall of the fixing post 2, providing a larger contact area for the connection between the waterproof ring 4 and the button contact, thus providing greater friction and making the waterproof ring 4 less prone to misalignment. Furthermore, when the waterproof ring 4 is subjected to a force moving away from the button cap 1, the contact sleeve 3 simultaneously resists the displacement of the waterproof ring 4; when the waterproof ring 4 is subjected to a force moving towards the button cap 1, the top of the contact sleeve 3 is blocked by the fixing post 2, making it difficult for the waterproof ring 4 to move towards the button cap 1. This further restricts the movement of the waterproof ring 4, resulting in better waterproofing of the phone's side buttons.
[0031] Reference Figure 2 as well as Figure 3 In this embodiment, the contact sleeve 3 and the waterproof ring 4 are integrally injection molded together.
[0032] Using a two-color injection molding machine, the plastic contact sleeve 3 is injected first, followed by the waterproof ring 4, so that the two parts are integrally injection molded, making them tightly connected and thus avoiding the disadvantage of easy separation in traditional structures.
[0033] Reference Figure 2 as well as Figure 3 In this embodiment, the waterproof ring 4 is a TPU ring.
[0034] TPU, or thermoplastic polyurethane, is a high-performance elastomer material belonging to the polyurethane family. It combines the elasticity of rubber with the processing properties of plastics, exhibiting excellent abrasion resistance, oil resistance, low-temperature resistance, and tear resistance.
[0035] Reference Figure 2 as well as Figure 3 In this embodiment, the waterproof ring 4 is also integrally connected with an extension part 5, and the button contact is provided with a groove 6 for the extension part 5 to be inserted. The extension part 5 is located on the side of the waterproof ring 4 away from the contact sleeve 3.
[0036] The cooperation between the extension part 5 and the groove 6 makes the connection between the waterproof ring 4 and the button contact more secure, and the extension part 5 can restrict the movement of the waterproof ring 4 on the side of the waterproof ring 4 away from the contact sleeve 3, making the installation of the waterproof ring 4 more stable and making the waterproof ring 4 less likely to slide on the fixing post 2.
[0037] Reference Figure 2 as well as Figure 3 In this embodiment, the side wall of the fixing column 2 has an annular limiting groove 7, the contact sleeve 3 and the waterproof ring 4 are sleeved on the periphery of the limiting groove 7, and the waterproof ring 4 abuts against the bottom wall of the limiting groove 7.
[0038] The limiting groove 7 restricts the installation position of the waterproof ring 4 and supports the waterproof ring 4. When the waterproof ring 4 is subjected to external force, the bottom wall of the limiting groove 7 supports the waterproof ring 4, so that the waterproof ring 4 can be stably installed on the periphery of the fixing column 2.
[0039] Reference Figure 2 as well as Figure 3 In this embodiment, a connecting part 8 is provided between the waterproof ring 4 and the extension part 5, and an avoidance groove 9 is opened on the side wall of the fixing post 2 for the connecting part 8 to be inserted.
[0040] The clearance groove 9 avoids the direct connection between the waterproof ring 4 and the extension 5, and the connecting part 8 is embedded in the clearance groove 9, increasing the connection area between the waterproof ring 4 and the button contact, which helps to further improve the installation stability of the waterproof ring 4 and make the waterproof ring 4 and the button contact more tightly connected.
[0041] Reference Figure 2 as well as Figure 3 In this embodiment, the length direction of the groove 6 is consistent with the length direction of the button contact, and the extension 5 is elongated.
[0042] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.
Claims
1. A waterproof mobile phone key structure, characterized in that: The key cap and the key contact pin are connected, the key contact pin comprises a fixed column and a contact sleeve sleeved on the fixed column, the fixed column is integrally connected with the key cap, the contact sleeve is in a cylindrical shape, one end of the contact sleeve is closed so that the inner bottom wall of the contact sleeve is tightly contacted with the end of the fixed column, the other end of the contact sleeve is open for the insertion of the fixed column, the inner circle of the contact sleeve is tightly contacted with the outer periphery of the fixed column, the contact sleeve is fixedly connected with a waterproof ring, when the contact sleeve is sleeved on the fixed column, the waterproof ring is sleeved on the outer periphery of the fixed column, and the outer circle diameter of the waterproof ring is greater than the outer periphery diameter of the contact sleeve.
2. The waterproof mobile phone key structure according to claim 1, characterized in that: The contact sleeve and the waterproof ring are integrally injection molded.
3. The waterproof mobile phone key structure according to claim 2, characterized in that: The waterproof ring is a TPU ring.
4. The waterproof mobile phone key structure according to claim 3, characterized in that: The waterproof ring is further integrally connected with an extension part, the key contact pin is provided with an embedding groove for embedding the extension part, and the extension part is located on the side of the waterproof ring away from the contact sleeve.
5. The waterproof mobile phone key structure according to claim 4, characterized in that: The side wall of the fixed column is provided with an annular limiting groove, the contact sleeve and the waterproof ring are sleeved on the peripheral wall of the limiting groove, and the waterproof ring is in contact with the bottom wall of the limiting groove.
6. The waterproof mobile phone key structure according to claim 5, characterized in that: A connecting part is arranged between the waterproof ring and the extension part, and the side wall of the fixed column is provided with a avoiding groove for embedding the connecting part.
7. The waterproof mobile phone key structure according to claim 6, characterized in that: The length direction of the embedding groove is consistent with the length direction of the key contact pin, and the extension part is in a strip shape.