Flip phone with waterproof function
By installing an integrally molded soft rubber plug on the body of the flip phone to seal the FPC through hole, and combining it with the design of guide sliding wall and plug, the problem of poor waterproof performance of flip phones is solved, achieving a higher waterproof effect and a simpler assembly process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN CITY WATERWORLD INFORMATION CO LTD
- Filing Date
- 2025-07-03
- Publication Date
- 2026-07-14
AI Technical Summary
Flip phones have gaps at the hinge, allowing external water to enter the body and damage internal components.
A one-piece molded soft rubber plug is installed on the main body of the flip phone to block the through holes of the FPC. Combined with the design of the guide sliding wall and the plug, a progressive guide channel is formed to enhance the waterproof performance.
It effectively reduces the risk of water ingress at the FPC through-holes, improves the waterproof performance of flip phones, simplifies the assembly process, and saves production molds and product space.
Smart Images

Figure CN224503397U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of flip phone technology, specifically relating to a flip phone with waterproof function. Background Technology
[0002] A flip phone, also known as a folding phone, is a mobile phone where the main display screen and buttons are only visible when the cover is flipped open. A flip phone mainly consists of two parts: the cover and the main body. The cover houses the display screen and other components, while the main body houses the buttons, motherboard, and other components. The cover is flipped onto the main body via a hinge assembly. The cover and main body are typically electrically connected using a flexible printed circuit board (FPC). The FPC passes through the hinge assembly, connecting the cover and the main body at both ends, thus achieving electrical and signal connections between the two parts.
[0003] However, since the cover can rotate relative to the main body, there will inevitably be gaps at the rotating connection. Furthermore, since the FPC needs to pass through the pivot assembly and can bend as the cover rotates, the part of the main body that connects to the pivot assembly needs to have a sufficiently large through hole for the FPC to pass through and bend. This directly leads to the risk that external water can enter the through hole where the FPC is assembled through the gap at the rotating connection and enter the main body through the through hole, damaging components such as the motherboard. Summary of the Invention
[0004] In view of this, the purpose of this utility model is to provide a flip phone with waterproof function to solve the problem of poor waterproof performance of existing flip phones as pointed out in the background art.
[0005] This utility model solves the above-mentioned technical problems through the following technical means:
[0006] A waterproof flip phone includes a main body, a cover, and an FPC (Flexible Printed Circuit). The main body has a through hole for the FPC to pass through, and a soft rubber button is installed on the main body. The flip phone further includes a soft rubber plug integrally formed on the soft rubber button, which can seal at least a portion of the structure of the through hole.
[0007] In one possible implementation, the soft rubber stopper includes a connecting portion and a first blocking portion, the connecting portion extending from the surface of the soft rubber button and having one end away from the soft rubber button connected to the first blocking portion, such that the first blocking portion is suspended relative to the soft rubber button.
[0008] The through hole includes an interconnected strip-shaped portion and an arc-shaped portion. The arc-shaped portion allows the FPC to pass through. The first plug can be installed into the strip-shaped portion by an interference fit to seal the strip-shaped portion.
[0009] In one possible implementation, the soft rubber stopper further includes a second blocking portion disposed on the first blocking portion, the second blocking portion being able to be installed into the arc portion by an interference fit; the second blocking portion has a channel for the FPC to pass through.
[0010] In one possible implementation, the soft rubber stopper has points a, b, c, and d on its cross-section, with points a and d connected to form a first side line, and points b and c connected to form a second side line. The first side line is longer than the second side line, and points a and b are not on the same horizontal straight line.
[0011] In one possible implementation, a waterproof layer is provided on the side of the cover body near the connection of the main body, and a notch is provided on the waterproof layer for the FPC to pass through; waterproof foam is provided in the notch.
[0012] In one possible implementation, the main body is provided with a positioning part adapted to the connecting part, and the connecting part can be positioned at the positioning part before the first blocking part is installed to the strip part.
[0013] In one possible implementation, the main body is designed with a first guide sliding wall on the periphery of the through hole. The first guide sliding wall gradually slopes from the side away from the through hole to the side closer to the through hole, so that the first guide sliding wall gradually converges in the direction closer to the through hole.
[0014] In one possible implementation, the main body is further provided with a second guide sliding wall at the opening of the through hole, and the first guide sliding wall is located radially outside the second guide sliding wall;
[0015] The second guide sliding wall gradually tilts from the side radially away from the center of the through hole to the side radially closer to the center of the through hole, so that the guide channel corresponding to the second guide sliding wall gradually converges towards the through hole and forms a progressive guide channel with the first guide sliding wall.
[0016] In one possible implementation, the side of the soft rubber plug that enters the through hole is designed with a guide slope.
[0017] In one possible implementation, the location where the connecting part and the first blocking part are connected is designed with a stepped abutment surface.
[0018] The beneficial effects of this utility model are:
[0019] By adopting the technical solution of this application, the soft rubber plug can block the through holes of the FPC, thereby reducing the risk of water entering the through holes of the FPC. At the same time, this application designs the soft rubber button and the soft rubber plug into an integral molding structure, which can take into account both the functions of water blocking and soft rubber button positioning. That is, after the soft rubber plug is installed first, it can play an auxiliary positioning role for the subsequent installation of the soft rubber button. In addition, it also has the advantages of reducing assembly steps, reducing production molds, and saving product space. Attached Figure Description
[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.
[0021] Figure 1 This is a schematic diagram of the structure of the flip phone in the embodiments of this application;
[0022] Figure 2 This is a schematic diagram of the internal structure of the main body in an embodiment of this application;
[0023] Figure 3 This is an embodiment of the present application. Figure 2 Enlarged view of point A in the middle;
[0024] Figure 4 This is a schematic diagram of the soft rubber button and soft rubber stopper in the embodiments of this application. Figure 1 ;
[0025] Figure 5 This is a schematic diagram of the soft rubber button and soft rubber stopper in the embodiments of this application. Figure 1 ;
[0026] Figure 6 This is an embodiment of the present application. Figure 5 Enlarged view of point B in the middle;
[0027] Figure 7 This is an embodiment of the present application. Figure 5 Enlarged view of point C in the middle;
[0028] Figure 8 This is a schematic diagram of the inner shell structure of the main body in the embodiment of this application. Figure 1 ;
[0029] Figure 9 This is an embodiment of the present application. Figure 8 Enlarged view of point D in the middle;
[0030] Figure 10 This is a schematic diagram of the inner shell structure of the main body in the embodiment of this application. Figure 2 ;
[0031] Figure 11 This is a schematic diagram of the internal structure of the cover in an embodiment of this application;
[0032] Figure 12 This is an embodiment of the present application. Figure 11 Enlarged view of point E in the middle;
[0033] Figure 13 This is a schematic diagram of another embodiment of the soft rubber stopper in this application;
[0034] Figure 14 This is an embodiment of the present application. Figure 13 Enlarged view of point F in the middle;
[0035] Icon labels:
[0036] 100. Main body; 110. Through hole; 111. Strip-shaped part; 112. Arc-shaped part;
[0037] 120. Soft rubber button; 121. First recessed strip; 122. First protrusion; 123. Positioning protrusion; 124. Waterproof groove; 130. Positioning part; 140. First guide slide wall; 150. Second guide slide wall;
[0038] 200. Cover; 210. Waterproof layer; 220. Waterproof foam;
[0039] 300, FPC;
[0040] 400, soft rubber stopper; 410, connecting part; 420, first blocking part; 430, guide slope; 440, top surface; 450, first edge line; 460, second edge line; 470, second blocking part; 471, channel. Detailed Implementation
[0041] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can understand the advantages and effects of this utility model from the content disclosed in this specification. It should be noted that the illustrations provided in the following embodiments are for illustrative purposes only and represent schematic diagrams, not actual pictures. They should not be construed as limiting the utility model. To better illustrate the embodiments of this utility model, some components in the figures may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable that some well-known structures and their descriptions may be omitted in the figures for those skilled in the art.
[0042] In the figures of this utility model embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper", "lower", "left", "right", "front", "rear", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figure, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe the positional relationship in the figure are only for illustrative purposes and should not be construed as limiting this utility model. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.
[0043] Example 1
[0044] like Figures 1-12 As shown, this application embodiment provides a waterproof flip phone, including a main body 100, a cover 200, and an FPC 300. The cover 200 has a hinge assembly, allowing it to be flipped and mounted on the main body 100. A through hole 110 is provided in the main body 100 near the hinge assembly, through which the FPC 300 passes, connecting the electrical components between the main body 100 and the cover 200 at both ends. A soft rubber button 120 is installed on the main body 100. It should be noted that the main body 100 and cover 200 also house structures such as a display screen, motherboard, and battery. However, this embodiment's improvement to the flip phone does not involve these structures, and these structures are relatively mature existing technologies; therefore, this embodiment will not describe these structures in detail.
[0045] In this embodiment, the flip phone also includes a soft rubber plug 400 integrally molded on the soft rubber button 120, which can block at least a portion of the structure of the through hole 110. This arrangement allows the soft rubber plug 400 to block at least a portion of the structure of the through hole 110, reducing the risk of water entering the through hole 110 of the FPC 300. Furthermore, this application designs the soft rubber button 120 and the soft rubber plug 400 as an integrally molded structure, which can simultaneously achieve the functions of water blocking and positioning of the soft rubber button 120. That is, after the soft rubber plug 400 is installed, it can play an auxiliary positioning role in the subsequent installation of the soft rubber button 120. In addition, it also has advantages such as reducing assembly steps, reducing production molds, and saving product space.
[0046] It should be noted that in existing flip phones, the outer shell of the main body 100 is composed of two shells. The upper side of the main body 100 (the side where the through hole 110 of FPC300 is located) has an independent receiving space. The upper side of the previously improved soft rubber button 120 is sandwiched between the two shells, which can separate the receiving space on the upper side of the main body 100 from the motherboard area inside the main body 100. However, FPC300 needs to extend from the receiving space to the motherboard area inside the main body 100 for connection. Therefore, a hole is also provided on the boundary (or bottom) of the receiving space facing the motherboard area inside the main body 100 for FPC300 to pass through. In this embodiment, the soft rubber plug 400 is integrally connected with the soft rubber button 120. Therefore, part of the structure of the soft rubber plug 400 also needs to be connected to the soft rubber button 120 through this hole. When part of the structure of the soft rubber plug 400 passes through this hole, it can seal the hole, thereby improving the waterproof performance of the flip phone and reducing the risk of water ingress into the motherboard. When assembling this part of the structure, first pass the bent section of FPC300 through the arc portion 112 of the through hole 110 from the receiving space side. Adjust the angle of FPC300 by rotation to allow it to enter the motherboard cavity and connect to the motherboard. The arc portion 112 and the strip portion 111 of the through hole 110 can provide sufficient structural space for the bent section of FPC300 to rotate through. After FPC300 is installed in place, the arc portion 112 of the through hole 110 accommodates the strip routing board of FPC300. After FPC300 is fixed, insert the plug portion of the soft rubber plug 400 along the strip portion 111 of the through hole 110 and seal the strip portion 111 by interference fit. Finally, snap the two housings together and press the soft rubber button 120.
[0047] In this embodiment, the soft rubber stopper 400 has an "L-shaped inverted" structure, including a connecting portion 410 and a first blocking portion 420. The connecting portion 410 extends from the surface of the software button 120, and the end of the connecting portion 410 away from the soft rubber button 120 is connected to the first blocking portion 420, so that the first blocking portion 420 is suspended relative to the software button 120. The through hole 110 has a "P-shaped" structure, including a strip-shaped portion 111 and an arc-shaped portion 112 that are interconnected. The arc-shaped portion 112 is for the FPC 300 to pass through, and the first blocking portion 420 can be installed into the strip-shaped portion 111 by an interference fit to seal the strip-shaped portion 111. By using the first blocking portion 420, the strip-shaped portion 111 of the through hole 110 can be blocked, leaving only the arc-shaped portion 112 for the FPC 300 to pass through, thereby reducing the risk of water entering the through hole 110 of the FPC 300.
[0048] In this embodiment, the soft rubber stopper 400 has points a, b, c, and d on its cross-section. Points a and d are connected to form a first side line 450, and points b and c are connected to form a second side line 460. The first side line 450 is longer than the second side line 460, and points a and b are not on the same horizontal line. It should be noted that when the soft rubber button 120 needs to be disassembled, the soft rubber stopper 400 is usually pulled out directly from its interference fit state, making the soft rubber button 120 easily damaged. However, the design of this embodiment strengthens the soft rubber stopper 400, providing a more robust support and reducing the risk of the soft rubber stopper 400 being torn.
[0049] like Figure 6 As shown, in this embodiment, the soft rubber stopper 400 has rounded corner structures at points a, b, and c. By designing rounded corner structures at these points, the strength of the soft rubber stopper 400 is further enhanced, reducing the risk of the soft rubber stopper 400 being torn.
[0050] In this embodiment, the main body 100 is provided with a positioning part 130 that adapts to the connecting part 410. The positioning part 130 mainly consists of two positioning surfaces. Before the first blocking part 420 is installed to the strip part 111, the connecting part 410 can be positioned between the two positioning surfaces of the positioning part 130. This arrangement facilitates the installation of the soft rubber stopper 400.
[0051] In this embodiment, the main body 100 is provided with a first guide sliding wall 140 around the through hole 110. The first guide sliding wall 140 gradually slopes from the side away from the through hole 110 to the side closer to the through hole 110, so that the guide channel corresponding to the first guide sliding wall 140 gradually converges towards the through hole 110, similar to a chamfered structure. By setting the first guide sliding wall 140, the installation resistance of the soft rubber stopper 400 can be reduced, making it easier to install the first blocking part 420 of the soft rubber stopper 400 into the through hole 110.
[0052] In this embodiment, the main body 100 is also designed with a second guide sliding wall 150 at the opening of the through hole 110, and the first guide sliding wall 140 is located on the radial outer side of the second guide sliding wall 150.
[0053] The second guide sliding wall 150 gradually slopes from the side radially away from the center of the through hole 110 to the side radially closer to the center of the through hole 110, so that the guide channel corresponding to the second guide sliding wall 150 gradually converges towards the through hole (110) and forms a progressive guide channel with the first guide sliding wall (140), which is also similar to a chamfered structure. By setting the second guide sliding wall 150, the installation resistance of the soft rubber plug 400 can be reduced, making it easier to install the first blocking part 420 of the soft rubber plug 400 into the through hole 110.
[0054] In this embodiment, a guide slope 430 is designed on the side of the soft rubber stopper 400 that enters the through hole 110, which is also similar to a chamfered structure. By setting the guide slope 430, the installation resistance of the soft rubber stopper 400 can be reduced, making it easier to install the first blocking part 420 of the soft rubber stopper 400 into the through hole 110.
[0055] In this embodiment, a stepped abutment surface 440 is designed at the connection position between the connecting part 410 and the first blocking part 420. This design enables the soft rubber stopper 400 to be positioned and installed, thereby providing a precise positioning effect for the subsequent installation of the soft rubber button 120.
[0056] In this embodiment, to further improve the waterproof performance of the flip phone, a first recessed strip 121 and a first protrusion 122 are respectively provided on the front and back sides of the upper end of the soft rubber button 120. Both the first recessed strip 121 and the first protrusion 122 extend laterally along the width direction of the flip phone, which can separate the upper and lower sides of the main body 100. A second protrusion adapted to the first recessed strip 121 and a second recessed strip adapted to the first protrusion 122 are provided inside the main body 100. After the flip phone is assembled, the second protrusion can be embedded in the first recessed strip 121 to achieve the first layer of waterproofing for the soft rubber button 120; the first protrusion 122 can be embedded in the second recessed strip to achieve the second layer of waterproofing for the soft rubber button 120. Through the double waterproofing design, even if external water enters the main body 100 through the through hole 110 of the FPC300, it can still be blocked by the two waterproof layers 210 and will not enter the motherboard position on the lower side of the main body 100, thereby further improving the waterproof performance of this flip phone.
[0057] In this embodiment, the lower end of the soft rubber button 120 has a positioning protrusion 123. This positioning protrusion 123 extends from the interior of the main body 100 to the side of the main body 100 near the cover 200, providing a cushioning effect for the cover 200 and also positioning the soft rubber button 120 during installation. Furthermore, the soft rubber button 120 has a ring-shaped waterproof groove 124 around the positioning protrusion 123, and the main body 100 has a waterproof protrusion that fits the waterproof groove 124. During assembly, the waterproof protrusion can be embedded into the waterproof groove 124, thereby enhancing the waterproof performance of the main body 100 at the positioning protrusion 123.
[0058] To further enhance the waterproof performance of the buttons and various interfaces, all buttons on the side of this flip phone, including the power button, volume buttons, and SOS button, feature a waterproof design with recessed and raised grooves. Additionally, the charging metal plate is located on the inside of the flip phone and is larger than the charging port, pressing against the main body casing from the inside out to create waterproofing. The USB connector and headphone jack are also waterproofed by adding silicone sleeves.
[0059] In this embodiment, since the FPC300 connects to the display screen inside the cover 200, external water can easily enter the cover 200 and damage the display screen (similar to water ingress at the hinge assembly of the main body 100 and the FPC through-hole structure). Therefore, to improve the waterproof performance of the cover 200, a waterproof layer 210 is designed on the side of the cover 200 near the connection point with the main body 100. This waterproof layer can prevent water from entering the screen. It should be noted that the cover 200 is also assembled from two shells, each with protrusions and grooves. The protrusions and grooves cooperate to form the waterproof layer 210 inside the cover 200, which can prevent water from entering the screen inside the cover 200. In addition, the waterproof layer 210 has a notch for the FPC300 to pass through, and a waterproof foam 220 is sealed at the notch. The waterproof foam 220 not only serves to seal and waterproof, but also protects the FPC300. It is worth mentioning that the notch is located on one side of the housing of the cover 200. After the waterproof foam 220 is built into the notch, it still retains a certain recessed depth. When the FPC300 is installed in the cover 200, this recessed space can play a positioning and guiding role for the wiring direction of the FPC300. The other side of the housing is provided with waterproof foam 220 that corresponds to and can fit into the notch. Specifically, when the FPC300 is located behind the notch containing the waterproof foam 220 and is covered by the other side of the housing, the FPC300 will be clamped between the two foams, achieving waterproofing of the FPC wiring channel (the notch mentioned above). At the same time, the waterproof layer 210 connected to the notch also forms a rigid water barrier through the protrusions and grooves.
[0060] Example 2
[0061] like Figures 13-14 As shown, this embodiment further optimizes the design of the soft rubber plug 400 in Embodiment 1. In addition to all the structures and functions of Embodiment 1, the soft rubber plug 400 in this embodiment also includes a second blocking portion 470 disposed on the first blocking portion 420. The shape of the second blocking portion 470 is designed according to the shape of the arc portion 112. The second blocking portion 470 can be installed into the arc portion 112 by an interference fit. A channel 471 for the FPC 300 to pass through is provided on the second blocking portion 470. With this arrangement, the soft rubber plug 400 can both allow the FPC 300 to pass through and completely seal the through hole 110, thereby further improving the waterproof performance of the flip phone.
[0062] It should be noted that the structural design of the soft rubber stopper 400 in this embodiment is suitable for mobile phones with higher waterproof requirements. Although the soft rubber stopper 400 has better waterproof performance, its structure is more complex, requiring higher mold specifications. Furthermore, Embodiment 1 is more user-friendly for installing the FPC 300 and allowing it to rotate with the cover 200. Embodiments 1 and 2 each have their advantages, and the specific design can be tailored to actual needs.
[0063] The above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model. Technologies, shapes, and structural parts not described in detail in this utility model are all known technologies.
Claims
1. A waterproof flip phone, comprising a main body (100), a cover (200), and an FPC (300), wherein the main body (100) has a through hole (110) for the FPC (300) to pass through, and a soft rubber button (120) is mounted on the main body (100), characterized in that: The flip phone also includes a soft rubber plug (400) integrally formed on the soft rubber button (120), the soft rubber plug (400) being able to block at least a portion of the structure of the through hole (110).
2. The flip phone according to claim 1, characterized in that, The soft rubber plug (400) includes a connecting part (410) and a first blocking part (420). The connecting part (410) extends from the surface of the soft rubber button (120) and one end away from the soft rubber button (120) is connected to the first blocking part (420), so that the first blocking part (420) is suspended relative to the soft rubber button (120). The through hole (110) includes a strip-shaped portion (111) and an arc-shaped portion (112) that are interconnected. The arc-shaped portion (112) is through which the FPC (300) passes. The first plug (420) can be installed into the strip-shaped portion (111) by an interference fit to block the strip-shaped portion (111).
3. The flip phone according to claim 2, characterized in that, The soft rubber plug (400) also includes a second plug (470) disposed on the first plug (420), the second plug (470) being able to be installed into the arc portion (112) by an interference fit; the second plug (470) is provided with a channel (471) for the FPC (300) to pass through.
4. The flip phone according to claim 2 or 3, characterized in that, The soft rubber stopper (400) has points a, b, c and d on its cross-section. Points a and d are connected to form a first side line (450), and points b and c are connected to form a second side line (460). The first side line (450) is longer than the second side line (460), and points a and b are not on the same horizontal straight line.
5. The flip phone according to claim 1, characterized in that, A waterproof layer (210) is provided on the side of the cover (200) near the connection of the main body (100), and a notch is provided on the waterproof layer (210) for the FPC (300) to pass through; a waterproof foam (220) is provided in the notch.
6. The flip phone according to claim 2 or 3, characterized in that, The main body (100) is provided with a positioning part (130) adapted to the connecting part (410). Before the first blocking part (420) is installed on the strip part (111), the connecting part (410) can be positioned at the positioning part (130).
7. The flip phone according to claim 2 or 3, characterized in that, The main body (100) is provided with a first guide sliding wall (140) on the periphery of the through hole (110). The first guide sliding wall (140) gradually tilts from the side away from the through hole (110) to the side close to the through hole (110), so that the guide channel corresponding to the first guide sliding wall (140) gradually converges towards the direction close to the through hole (110).
8. The flip phone according to claim 7, characterized in that, The main body (100) is also designed with a second guide sliding wall (150) at the opening of the through hole (110), and the first guide sliding wall (140) is located on the radial outer side of the second guide sliding wall (150); The second guide wall (150) gradually tilts from the side that is radially away from the center of the through hole (110) to the side that is radially closer to the center of the through hole (110), so that the guide channel corresponding to the second guide wall (150) gradually converges towards the through hole (110) and forms a progressive guide channel with the first guide wall (140).
9. The flip phone according to any one of claims 1-3, characterized in that, The soft rubber plug (400) has a guide slope (430) on the side that enters the through hole (110).
10. The flip phone according to claim 2 or 3, characterized in that, The connection point between the connecting part (410) and the first blocking part (420) is designed with a stepped abutment surface (440).