A rotating shaft having a soft stop structure

Abstract

The utility model relates to the technical field of pivot, specifically disclose a pivot with soft check point structure, including the axle body, install second mounting piece on the axle body, and the side away from the second mounting piece of axle body is provided with elastic positioning mechanism, still including first mounting piece, first mounting piece is connected with the axle body rotation through the buffer connection mechanism, when being pressed or too big torque by accident, the pivot can produce trace protective yielding rotation, dispersion force, reduce the damage to screen shell and panel, and avoid the stress concentration produced by rigid contact, thereby prevent the plastic deformation or rupture of screen internal precision component. Therefore, the pivot not only can improve the reliability and durability of the pivot when using, also enhanced the impact resistance of equipment in extreme conditions, reduced the economic loss risk of user, is suitable for widely using.

Description

Technical Field

[0001] This utility model relates to the field of rotating shaft technology, specifically a rotating shaft with a soft stop structure. Background Technology

[0002] As is well known, hinges are an indispensable key component in modern electronic devices, especially portable devices such as laptops, tablets, and foldable phones. The main function of a hinge is to achieve a reliable connection and relative rotation between two parts of the device (such as the screen and the main body of a laptop), and to allow it to hover stably at any angle to meet diverse user needs.

[0003] In the prior art, such as the patent with authorization announcement number CN114792878B, a notebook hinge is disclosed, including a hinge body and an antenna bracket connected to the hinge body. The hinge body and the antenna bracket are connected by a movable pin. The antenna bracket has an IFA cable structure and a coupling ring grounding structure on both sides. The IFA cable structure includes a first IFA antenna slot, a second IFA antenna slot, an antenna structure, a radiator, and an isolation slot on one side of the antenna bracket. The coupling ring grounding structure includes a radiator, a longitudinal slot, a parasitic structure, and a transverse slot on the other side of the antenna bracket.

[0004] Currently, in existing technologies, a structure with rigid stops (or blocks) is commonly used to achieve functions such as hinge positioning and hovering. This structure typically has one or more rigid protrusions or grooves along the hinge's rotation path. When the hinge rotates to a specific angle (such as the fully open position of a laptop), the corresponding components on the hinge will make rigid contact and engage with these rigid stops, forcibly preventing further rotation through mechanical interference, thereby achieving positioning.

[0005] While the aforementioned structure meets user needs to some extent, this rigid stop structure has significant technical drawbacks: when the device (such as a laptop screen) is subjected to unexpected external pressure, impact, or excessive torque at the stop point, the rigidity of the rigid stop prevents the hinge from producing even a slight, protective yielding rotation. In this situation, the enormous force is entirely borne by the rigid contact components inside the hinge and the connected screen structure, leading to plastic deformation or damage to the precision components inside the screen. In severe cases, it can even cause the screen casing to crack or the screen panel itself to break, resulting in economic losses for the user. Therefore, this structure has certain shortcomings. Utility Model Content

[0006] The purpose of this invention is to provide a rotating shaft with a soft stop structure to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a rotating shaft with a soft stop structure, comprising a shaft body, on which a second mounting plate is mounted, and an elastic positioning mechanism is provided on the side of the shaft body away from the second mounting plate; it also includes a first mounting plate, which is rotatably connected to the shaft body through a buffer connection mechanism.

[0008] Furthermore, the buffer connection mechanism includes a connecting ring and a connecting bracket mounted on the shaft, the connecting bracket being connected to the first mounting plate via a positioning element; the connecting ring and the connecting bracket are provided with an arc-shaped structure.

[0009] Furthermore, the arc-shaped structure includes a first arc-shaped block mounted on the connecting bracket, and a second arc-shaped block is provided on the connecting ring. The first arc-shaped block and the second arc-shaped block are arranged opposite to each other, and their contact surface is a gradually changing arc-shaped surface.

[0010] Furthermore, the first mounting plate is provided with an extension portion, which is rotatably connected to the shaft; and the positioning member includes a rod fixedly connected to the connecting bracket, and the extension portion is provided with a slot adapted to the rod, wherein the rod engages with the slot.

[0011] Furthermore, a retaining ring is also provided on the shaft, and the end of the connecting ring away from the connecting bracket is connected to the retaining ring.

[0012] Furthermore, the elastic positioning mechanism includes a nut, which is installed at the end of the shaft away from the second mounting plate, and also includes an elastic unit disposed between the nut and the retaining ring.

[0013] Furthermore, the elastic unit includes a spring disposed between the retaining ring and the nut.

[0014] Furthermore, the elastic unit includes a torsion spring and a noise-reducing spring mounted on the shaft; the torsion spring is used to provide torsional cushioning, and the noise-reducing spring is used to reduce noise during rotation.

[0015] Furthermore, the shaft is connected to the second mounting plate via a connecting part.

[0016] Furthermore, both the first mounting plate and the second mounting plate are provided with locking grooves.

[0017] Compared with existing technologies, the beneficial effects of this utility model are as follows: This rotating shaft with a soft-stop structure, through the cooperation of the shaft body, first mounting plate, second mounting plate, elastic positioning mechanism, and buffer connection mechanism, provides a buffering function to the connection between the first and second mounting plates and the shaft body when the first mounting plate rotates. Under accidental compression or excessive torque, the rotating shaft can generate a slight protective yielding rotation, dispersing the force and reducing damage to the screen housing and panel. It also avoids stress concentration caused by rigid contact, thereby preventing plastic deformation or breakage of precision components inside the screen. Therefore, this rotating shaft not only improves the reliability and durability of the shaft during use but also enhances the device's impact resistance under extreme conditions, reducing the user's risk of economic loss and making it suitable for widespread use. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0019] Figure 1 A schematic diagram of the overall structure provided for an embodiment of this utility model; Figure 2 This is a schematic diagram of the overall structure from another perspective, provided for an embodiment of the present utility model. Figure 3 This is a schematic diagram of the overall exploded state structure provided for an embodiment of the present utility model; Figure 4 A schematic diagram of the connecting bracket structure provided in an embodiment of this utility model; Figure 5 A schematic diagram of the connecting ring structure provided in an embodiment of this utility model; Figure 6 This is a schematic diagram of the connecting bracket provided in an embodiment of the present utility model from another perspective. Figure 7 This is a schematic diagram of another embodiment of the elastic unit provided in this utility model.

[0020] Explanation of reference numerals in the attached drawings: 1. First mounting plate; 11. Extension; 2. Second mounting plate; 3. Shaft; 31. Connecting part; 4. Buffer connecting mechanism; 41. Connecting ring; 42. Connecting bracket; 43. Insert rod; 44. First arc-shaped block; 45. Second arc-shaped block; 5. Nut; 6. Elastic unit; 61. Torque spring; 62. Noise-absorbing spring; 7. Snap ring. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1-7 This utility model provides a technical solution: a rotating shaft with a soft stop structure, including a shaft body 3, a second mounting plate 2 mounted on the shaft body 3, and an elastic positioning mechanism provided on the side of the shaft body 3 away from the second mounting plate 2; it also includes a first mounting plate 1, which is rotatably connected to the shaft body 3 through a buffer connection mechanism 4.

[0023] Specifically, the hinge with a flexible stop structure includes a hinge body 3, on which a second mounting plate 2 is mounted. An elastic positioning mechanism is located on the side of the hinge body 3 away from the second mounting plate 2, providing axial elastic pressure for the entire hinge. It also includes a first mounting plate 1, which is rotatably connected to the hinge body 3 via a buffer connection mechanism 4. The hinge body 3 serves as the core support, and the second mounting plate 2 is fixedly connected to a part of the device (such as a laptop). The first mounting plate 1 is rotatably connected to the hinge body 3 via the buffer connection mechanism 4. When the first mounting plate 1 rotates on the hinge body 3, the buffer connection mechanism 4 provides a buffering function to the connection between the first mounting plate 1, the second mounting plate 2, and the hinge body 3. Through the cooperation of the buffer connection mechanism 4 and the elastic positioning mechanism, the hinge can produce a slight yielding rotation when subjected to accidental compression or excessive torque, dispersing the force, avoiding stress concentration caused by rigid contact, reducing damage to the screen casing and panel, and improving the hinge's reliability and the device's impact resistance.

[0024] In the embodiments provided by this utility model, the buffer connection mechanism 4 includes a connecting ring 41 and a connecting bracket 42 mounted on the shaft 3. The connecting bracket 42 is connected to the first mounting piece 1 through a positioning member. The connecting ring 41 and the connecting bracket 42 are provided with an arc-shaped structure. The arc-shaped structure provides progressive buffering, reduces sudden impact during rotation, makes the rotation process smoother, and extends the service life of the shaft. The arc-shaped structure includes a first arc-shaped block 44 mounted on the connecting bracket 42, and a second arc-shaped block 45 is provided on the connecting ring 41. The first arc-shaped block 44 and the second arc-shaped block 45 are arranged opposite to each other, and their contact surface is a gradually changing arc-shaped surface. During use, the first arc-shaped block 44 and the second arc-shaped block 45 contact each other on the arc-shaped surface. When the two arc-shaped blocks rotate, they contact each other through the gradually changing curved surface, generating sliding friction. The gradually changing curved surface realizes the function of soft blocking point, providing gentle resistance at a specific angle and avoiding hard collisions.

[0025] In the embodiment provided by this utility model, the first mounting plate 1 is provided with an extension 11, which is rotatably connected to the shaft 3; and the positioning member includes a rod 43 fixedly connected to the connecting bracket 42, and the extension 11 is provided with a slot adapted to the rod 43, which engages with the slot. The extension 11 is rotatable on the shaft 3, and the rod 43 is inserted into the slot to quickly fix the connecting bracket 42 and the first mounting plate 1, providing support for the rotation of the first mounting plate 1.

[0026] In the embodiment provided by this utility model, a retaining ring 7 is also provided on the shaft 3, and the end of the connecting ring 41 away from the connecting bracket 42 is connected to the retaining ring 7. Specifically, the retaining ring 7 provides axial fixation to prevent the connecting ring 41 and the elastic unit 6 from shifting, ensuring the reliable operation of the buffer connection mechanism 4.

[0027] In the embodiments provided by this utility model, the elastic positioning mechanism includes a nut 5, which is installed at the end of the shaft 3 away from the second mounting plate 2. It also includes an elastic unit 6 disposed between the nut 5 and the retaining ring 7. During this process, the rotating shaft maintains appropriate friction and suspension function during rotation, allowing elastic deformation to absorb impact and meet the working requirements.

[0028] In the embodiments provided by this utility model, the elastic unit 6 includes a spring, which is disposed between the retaining ring 7 and the nut 5. The spring has a simple structure and low cost of use.

[0029] In the embodiments provided by this utility model, the elastic unit 6 includes a torque spring 61 and a noise-absorbing spring 62 mounted on the shaft 3; the torque spring 61 is used to provide torsional buffering, and the noise-absorbing spring 62 is used to reduce noise during rotation, which further improves the comfort of the shaft during use and meets the work requirements.

[0030] In the embodiments provided by this utility model, the shaft 3 is connected to the second mounting plate 2 through the connecting part 31. Specifically, the connecting part 31 and the second mounting plate 2 can be fixedly connected by bolts to improve the stability of the second mounting plate 2 during installation.

[0031] In the embodiments provided by this utility model, both the first mounting plate 1 and the second mounting plate 2 are provided with locking grooves. The locking grooves facilitate the installation and disassembly of the rotating shaft and the equipment, and simultaneously enhance the connection reliability between the rotating shaft and the equipment.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rotating shaft with a soft stop structure, comprising a shaft body (3), characterized in that: A second mounting plate (2) is mounted on the shaft (3), and an elastic positioning mechanism is provided on the side of the shaft (3) away from the second mounting plate (2); It also includes a first mounting plate (1), which is rotatably connected to the shaft (3) through a buffer connection mechanism (4).

2. A rotating shaft with a soft stop structure according to claim 1, characterized in that: The buffer connection mechanism (4) includes a connecting ring (41) mounted on the shaft (3) and a connecting bracket (42), the connecting bracket (42) being connected to the first mounting plate (1) via a positioning element; The connecting ring (41) and the connecting bracket (42) are provided with an arc-shaped structure.

3. A rotating shaft with a soft stop structure according to claim 2, characterized in that: The arc-shaped structure includes a first arc-shaped block (44) mounted on a connecting bracket (42), a second arc-shaped block (45) provided on the connecting ring (41), and the first arc-shaped block (44) and the second arc-shaped block (45) are arranged opposite to each other, and the contact surface between the first arc-shaped block (44) and the second arc-shaped block (45) is a gradually changing arc-shaped surface.

4. A rotating shaft with a soft stop structure according to claim 2, characterized in that: The first mounting plate (1) is provided with an extension (11), which is rotatably connected to the shaft (3); The positioning component includes a rod (43) fixedly connected to the connecting bracket (42), and the extension (11) has a slot adapted to the rod (43), wherein the rod (43) engages with the slot.

5. A rotating shaft with a soft stop structure according to claim 2, characterized in that: A retaining ring (7) is also provided on the shaft (3), and the end of the connecting ring (41) away from the connecting bracket (42) is connected to the retaining ring (7).

6. A rotating shaft with a soft stop structure according to claim 5, characterized in that: The elastic positioning mechanism includes a nut (5) which is installed on the end of the shaft (3) away from the second mounting plate (2), and also includes an elastic unit (6) disposed between the nut (5) and the retaining ring (7).

7. A rotating shaft with a soft stop structure according to claim 6, characterized in that: The elastic unit (6) includes a spring, which is disposed between the retaining ring (7) and the nut (5).

8. A rotating shaft with a soft stop structure according to claim 6, characterized in that: The elastic unit (6) includes a torsion spring (61) and a noise-reducing spring (62) mounted on the shaft (3). The torsion spring (61) is used to provide torsional cushioning, and the noise-reducing spring (62) is used to reduce noise during rotation.

9. A rotating shaft with a soft stop structure according to claim 1, characterized in that: The shaft (3) is connected to the second mounting plate (2) via the connecting part (31).

10. A rotating shaft with a soft stop structure according to claim 1, characterized in that: Both the first mounting plate (1) and the second mounting plate (2) are provided with locking grooves.

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