Bending hinge of folding mobile phone

Abstract

The utility model relates to a bending hinge of a folding mobile phone. The bending hinge is mainly composed of a connecting plate, a gear assembly, a swing arm assembly and a connecting shell. In the gear assembly, three gear bases are vertically arranged, and transmission stability is ensured through cooperation of a shaft rod and a square line spring; the two gear shafts are in toothed connection with the first swing arm, and precise transmission is achieved. And the swing arm assembly comprises a swing arm base and a second swing arm, and the second swing arm is connected with the arc-shaped groove and the slide way through an adaptive arc-shaped part, so that the smooth and accurate swing is ensured. The connecting shell serves as a bridge, and the mobile phone face is tightly connected with the swing arm and the gear assembly. According to the design, through cooperative work of the gear assembly and the swing arm assembly, precise control over the swing arm torque is achieved, the swing arm load is effectively relieved, and the precision and smoothness of the folding action are improved. A user can easily enjoy the complete folding effect of the mobile phone from 0 degree to 180 degrees, and the stability and reliability in the folding and unfolding process are ensured.

Description

Technical Field

[0001] The utility model relates to a hinge, in particular to a bending hinge for a folding mobile phone. Background Art

[0002] With the continuous advancement of mobile communication technology and the diversification of consumer demands, foldable phones, as a new type of smart terminal that combines portability with a large-screen experience, have attracted widespread attention and favor in the market in recent years. However, the design of the bending hinge, a core component of foldable phones, is directly related to the phone's folding effect, durability, and user experience.

[0003] Traditional bending hinge designs often have problems such as inaccurate folding angles, unsmooth folding movements, and swing arm loads, which affect the overall performance of foldable phones. Utility Model Content

[0004] In view of the above situation, it is necessary to provide a bending hinge for a folding mobile phone that solves at least one of the above problems, including

[0005] connecting plate;

[0006] The gear assembly includes a gear base, a gear shaft, a shaft, a square wire spring, and a first swing arm. The gear bases are three in number and are arranged vertically on the connecting plate. The shaft passes through the three gear bases. The square wire spring is sleeved on the shaft and located between the first and second gear bases. The two gear shafts are arranged between the second and third gear bases. The two first swing arms are arranged on both sides of the connecting plate and are gear-engaged with the gear shafts.

[0007] The swing arm assembly includes a swing arm base and a second swing arm. The swing arm base is arranged on the connecting plate. Arc grooves are provided on both sides of the swing arm base. Arc slides are provided at the upper and lower ends of the arc grooves. The second swing arm is arranged on the swing arm base. The second swing arm is provided with an arc portion adapted to the shape of the arc groove. Arc slides matching the arc slides are provided at the upper and lower ends of the second swing arm.

[0008] And a connecting shell, the connecting shell is connected to the second swing arm and the first swing arm, and the connecting shell is used to connect to the mobile phone surface.

[0009] Preferably, the first swing arm is connected to the gear base via a cam.

[0010] Preferably, it further comprises a center axis plate, which is arranged at the center axis position of the connecting plate and is connected to the gear assembly and the swing arm assembly.

[0011] Preferably, one end of the shaft rod is passed through the swing arm base.

[0012] Preferably, the swing arm base is threadedly connected to the connecting plate.

[0013] Preferably, the connecting shell is provided with a through hole and a connecting rod is fixed thereon, the shape of the portion where the first swing arm is connected to the through hole is adapted, the first swing arm is passed through the through hole, one end of the second swing arm is provided with a through connecting hole, and the connecting rod is passed through the connecting hole.

[0014] Preferably, the cross-sectional area of ​​the through hole is in a convex shape. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] 1. Connecting plate 2. Gear assembly; 21. Gear base; 22. Gear shaft; 23. Shaft; 24. Square wire spring; 25. First swing arm; 3. Swing arm assembly; 31. Swing arm base; 311. Arc groove; 312. Arc slide; 32. Second swing arm; 321. Arc portion; 4. Connecting shell; 41. Through hole; 42. Connecting rod; 5. Center axis plate.

[0016] Figure 1 This is a structural schematic diagram of the bending hinge of the folding mobile phone according to an embodiment of the present invention from a first perspective.

[0017] Figure 2 It is a structural schematic diagram of the bending hinge of the folding mobile phone according to an embodiment of the present invention from a second perspective.

[0018] Figure 3 It is a schematic structural diagram of the gear assembly and the swing arm assembly of an embodiment of the present utility model.

[0019] Figure 4 It is a schematic structural diagram of a gear assembly according to an embodiment of the present invention.

[0020] Figure 5 It is a structural schematic diagram of the swing arm assembly of an embodiment of the present utility model.

[0021] Figure 6 It is a structural schematic diagram of a connection shell according to an embodiment of the present utility model. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the following further describes the bending hinge of the folding mobile phone of the present invention in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0023] In the description of the present invention, unless otherwise specified, "plurality" means two or more; the terms "center", "longitudinal", "lateral", "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0024] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0025] See Figures 1 to 6 The bending hinge of the folding mobile phone of the present invention includes a connecting plate 1; a gear assembly 2, including a gear base 21, a gear shaft 22, a shaft 23, a square wire spring 24 and a first swing arm 25. The number of the gear bases 21 is three, which are arranged vertically on the connecting plate 1 in sequence. The shaft 23 passes through the three gear bases 21. The square wire spring 24 is sleeved on the shaft 23 and is located between the first and second gear bases 21. The two gear shafts 22 are arranged between the second and third gear bases 21. The two first swing arms 25 It is arranged on both sides of the connecting plate 1 and is gear-engaged with the gear shaft 22. The swing arm assembly 3 includes a swing arm base 31 and a second swing arm 32. The swing arm base 31 is arranged on the connecting plate 1. Arc grooves 311 are provided on both sides of the swing arm base 31. Arc slides 312 are provided at the upper and lower ends of the arc grooves 311. The second swing arm 32 is arranged on the swing arm base 31. The second swing arm 32 is provided with an arc portion 321 that adapts to the shape of the arc groove 311. Arc slides matching the arc slides 312 are provided at the upper and lower ends of the second swing arm 32. And a connecting shell 4 is connected to the second swing arm 32 and the first swing arm 25. The connecting shell 4 is used to connect to the phone surface.

[0026] In the above embodiment, the folding hinge of the folding phone is designed to achieve precise folding and unfolding of the phone within a range of 0 to 180 degrees and reduce the load during the swinging process. Its core structure includes a connecting plate 1, a gear assembly 2, a swing arm assembly 3, and a connecting shell 4.

[0027] The connecting plate 1 serves as the supporting foundation for the entire bending hinge, securing and connecting the other components. The gear assembly 2 consists of three vertically arranged gear bases 21, a shaft 23 passing through the three gear bases 21, a square wire spring 24 sleeved on the shaft 23 and positioned between the first and second gear bases 21, two gear shafts 22 positioned between the second and third gear bases 21, and two first swing arms 25 gear-engaged with the gear shafts 22. This design ensures the stability and precision of the gear assembly 2.

[0028] The square wire spring 24 in the gear assembly 2 not only provides elastic force, but also acts as a buffer during folding and unfolding, reducing the load on the swing arm. The two gear shafts 22 drive the two first swing arms 25 to swing through a gear connection, making the movement of the swing arms more precise and smooth.

[0029] The swing arm assembly 3 further enhances the folding effect of the bending hinge. The swing arm base 31 is mounted on the connecting plate 1, with curved grooves 311 designed on both sides. These curved grooves 311 are cleverly provided with curved slideways 312 at their upper and lower ends. A second swing arm 32 is mounted on the swing arm base 31, its shape perfectly matching the curved grooves 311, ensuring its stability. Furthermore, curved chutes matching the curved slideways 312 are also provided at the upper and lower ends of the second swing arm 32. This design allows for smoother swinging of the swing arm, reducing friction and resistance.

[0030] The coordinated operation of gear assembly 2 and swing arm assembly 3 enables precise control of the swing arm's torque. During the phone's unfolding or folding process, gear assembly 2 provides a stable driving force to swing arm assembly 3 through precise transmission, reducing the load on the swing arm and improving accuracy. This design not only ensures smooth and stable folding and unfolding of the phone, but also enables a full folding range of 0 to 180 degrees.

[0031] Finally, the connecting shell 4 serves as the outer package of the entire bending hinge, connecting the phone surface and fixing the various components. It is closely connected with the second swing arm 32 and the first swing arm 25 to form a stable overall structure, ensuring the reliability and durability of the bending hinge.

[0032] Please attend Figures 1 to 6 In another embodiment, the first swing arm 25 is connected to the gear base 21 by a cam.

[0033] In the above-described embodiment, the folding hinge design of the folding phone utilizes a cam connection between the first swing arm 25 and the gear base 21. This connection allows the first swing arm 25 to swing along a specific cam profile under the drive of the gear shaft 22. During the folding or unfolding of the phone, the cam connection creates a certain jerkiness, allowing the user to clearly perceive the folding or unfolding action, thereby enhancing the user experience.

[0034] Please attend Figures 1 to 6 In another embodiment, it further includes a center axis plate 5, which is arranged at the center axis position of the connecting plate 1 and is connected to the gear assembly 2 and the swing arm assembly 3.

[0035] In the above embodiment, the center plate 5 secures the connection between the gear shaft 22, the shaft 23, and the square wire spring 24, precisely aligning the swing arm assembly 3 and the gear assembly 2. This design optimizes the spatial layout of the hinge, ensuring synchronization and coordination between the swing arm assembly 3 and the gear assembly 2 during swinging, thus ensuring smooth and precise folding and unfolding of the phone.

[0036] Please attend Figures 1 to 6 In another embodiment, one end of the shaft rod 23 is passed through the swing arm base 31 .

[0037] In the above embodiment, one end of the shaft 23 passes through three gear bases 21 and also passes through the swing arm base 31. This design ensures that the swing arm assembly 3 and the gear assembly 2 are structurally aligned, thereby enhancing the overall stability of the bending hinge and the accuracy of the folding action.

[0038] Please attend Figures 1 to 6 In another embodiment, the swing arm base 31 is threadedly connected to the connecting plate 1.

[0039] In the above embodiment, the stable installation of the swing arm base 31 is ensured.

[0040] Please attend Figures 1 to 6 In another embodiment, the connecting shell 4 is provided with a through hole 41 and a connecting rod 42 is fixed thereto. The shape of the portion where the first swing arm 25 is connected to the through hole 41 is adapted. The first swing arm 25 is passed through the through hole 41. One end of the second swing arm 32 is provided with a through connecting hole, and the connecting rod 42 is passed through the connecting hole.

[0041] In the above embodiment, the first swing arm 25 adopts a shape-adaptive setting at the portion where it is connected to the through hole 41, that is, its shape matches the shape of the through hole 41, so that the first swing arm 25 can pass through the through hole 41, thereby realizing the connection between the swing arm assembly 3 and the connecting shell 4.

[0042] Furthermore, a connecting rod 42 is fixed to the connecting housing 4. A connecting hole extending through one end of the second swing arm 32 is shaped to match the connecting rod 42, allowing it to be inserted into the hole. This connection not only ensures a secure connection between the second swing arm 32 and the connecting housing 4, but also allows the swing arm assembly 3 to maintain a stable motion trajectory during folding and unfolding, thereby improving the efficiency and stability of the entire bending hinge and further extending the life of the phone.

[0043] Please attend Figures 1 to 6 In another embodiment, the cross-sectional area of ​​the through hole 41 is a “convex” shape.

[0044] In the above embodiment, it can ensure that the connection between the first swing arm 25 and the through hole 41 is more stable, preventing the swing arm from shaking or falling off during the swinging process; on the other hand, it is convenient to position and install the first swing arm 25, thereby improving assembly efficiency and accuracy.

[0045] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with this profession can make some changes or modifications to equivalent embodiments of the technical content disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A bending hinge for a folding mobile phone, characterized in that: include connecting plate; The gear assembly includes a gear base, a gear shaft, a shaft, a square wire spring, and a first swing arm. The gear bases are three in number and are arranged vertically on the connecting plate. The shaft passes through the three gear bases. The square wire spring is sleeved on the shaft and located between the first and second gear bases. The two gear shafts are arranged between the second and third gear bases. The two first swing arms are arranged on both sides of the connecting plate and are gear-engaged with the gear shafts. The swing arm assembly includes a swing arm base and a second swing arm, wherein the swing arm base is provided on the connecting plate, arc-shaped grooves are provided on both sides of the swing arm base, and arc-shaped slideways are provided at upper and lower ends of the arc-shaped grooves; the second swing arm is provided on the swing arm base, and the second swing arm is provided with an arc-shaped portion adapted to the shape of the arc-shaped grooves, and arc-shaped slideways matching the arc-shaped slideways are provided at upper and lower ends of the second swing arm; And a connecting shell, the connecting shell is connected to the second swing arm and the first swing arm, and the connecting shell is used to connect to the mobile phone surface.

2. The folding hinge for a foldable mobile phone according to claim 1, wherein: The first swing arm is connected to the gear base via a cam.

3. The folding hinge for a foldable mobile phone according to claim 1, wherein: It also includes a center axis plate, which is arranged at the center axis position of the connecting plate and is connected to the gear assembly and the swing arm assembly.

4. The folding hinge for a foldable mobile phone according to claim 1, wherein: One end of the shaft rod is passed through the swing arm base.

5. The folding hinge for a foldable mobile phone according to claim 1, wherein: The swing arm base is threadedly connected to the connecting plate.

6. The folding hinge for a foldable mobile phone according to claim 1, wherein: The connecting shell is provided with a through hole and a connecting rod is fixed thereon. The shape of the portion where the first swing arm is connected to the through hole is adapted. The first swing arm is passed through the through hole. One end of the second swing arm is provided with a through connecting hole, and the connecting rod is passed through the connecting hole.

7. The folding hinge for a foldable mobile phone according to claim 6, wherein: The cross-sectional area of ​​the through hole is a "convex" shape.

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