Hinge device capable of synchronously rotating and axially stretching and retracting

Abstract

The utility model relates to the technical field of hinge devices, and discloses a hinge device capable of synchronously rotating and axially extending and retracting, which comprises a cylindrical middle shaft with a limiting pin shaft in the middle of the surface; the long hinge comprises two connecting shaft sleeves and a long handle, and the two connecting shaft sleeves are symmetrically arranged on the two sides of the long handle; the two connecting shaft sleeves are detachably connected with the two ends of the middle shaft; the short hinge is located between the two connecting shaft sleeves and arranged on the middle shaft in a sleeving mode; a spiral lifting groove matched with the limiting pin shaft is formed in the surface of the short hinge; the limiting pin shaft moves along the spiral lifting groove to promote the long hinge and the middle shaft to rotate and axially stretch and retract along the short hinge together; and the compression spring is detachably arranged between the short hinge and one of the connecting shaft sleeves and sleeves the middle shaft. Through the ingenious design of a limiting pin shaft and a spiral lifting groove, the device can synchronously achieve axial telescopic movement in the rotating process, the multifunctional use requirement is met, and the device is particularly suitable for scenes needing composite movement.

Description

Technical Field

[0001] This utility model relates to the field of hinge device technology, specifically to a hinge device that can rotate synchronously and extend and retract axially. Background Technology

[0002] Hinges in the prior art are widely used in mechanical equipment, furniture connectors, construction engineering and industrial automation, and their main function is to provide rotational connection between components. However, traditional hinges can usually only meet the needs of a single rotational movement. For some scenarios that require complex movements, such as simultaneously achieving rotation and axial extension, the existing technology often falls short. This limitation not only restricts the application range of hinges, but also leads to many problems in actual use.

[0003] First, existing hinge devices have limited functionality and lack compatibility. In certain scenarios, especially in mechanical transmission devices or deformable structures, users not only need rotational movement but also require the hinge to be able to extend and retract in the axial direction. Traditional solutions usually require the addition of extra telescopic components, which not only makes the overall structure of the device more complex but also significantly increases the size and weight of the device, while also increasing the difficulty of manufacturing, installation, and commissioning.

[0004] In view of the above, this application proposes a hinge device that can rotate and extend axially simultaneously to solve the above problems. The hinge device can achieve axial extension and retraction simultaneously during rotation, has a simple structure, high flexibility, and is easy to maintain, so as to solve the above problems in the prior art, expand its application range and improve its efficiency. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a hinge device capable of synchronous rotation and axial extension, thus solving the problems mentioned in the background section.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A hinge device capable of synchronous rotation and axial extension includes,

[0008] The central shaft is cylindrical, and a limiting pin is provided in the middle of its surface;

[0009] A long hinge includes two connecting bushings and a long handle, with the two connecting bushings symmetrically arranged on both sides of the long handle; both connecting bushings are detachably connected to both ends of a central shaft.

[0010] The short hinge is located between the two connecting bushings and is sleeved on the central shaft; the surface of the short hinge is provided with a spiral lifting groove adapted to the limiting pin; the movement of the limiting pin along the spiral lifting groove causes the long hinge and the central shaft to rotate and extend axially along the short hinge together;

[0011] A compression spring is detachably disposed between the short hinge and one of the connecting bushings, and is sleeved on the central shaft.

[0012] Optionally, a through hole is provided at both ends of the central shaft.

[0013] Optionally, the connecting bushing is provided with two corresponding connecting holes, which correspond to the two ends of the through hole and are connected to the through hole.

[0014] Optionally, a pin is inserted to fix the connection between the two connecting holes and the through hole.

[0015] Optionally, the short hinge includes an L-shaped plate and a hollow cylindrical sleeve;

[0016] The hollow cylindrical sleeve is fitted onto the central axis;

[0017] The L-shaped plate is fixedly connected to the side of the hollow cylindrical sleeve away from the long handle.

[0018] Optionally, the spiral lifting groove includes an inclined track and an elliptical track;

[0019] The inclined path is inclined toward the side of the central axis where the compression spring is located;

[0020] The elliptical track is located on the side of the inclined track away from the side where the compression spring is located.

[0021] This utility model provides a hinge device that can rotate synchronously and extend axially, which has the following advantages:

[0022] 1. Through the ingenious design of the limiting pin and the spiral lifting groove, this device can simultaneously achieve axial telescopic movement during rotation, meeting the needs of multi-functional use, and is especially suitable for scenarios requiring compound motion.

[0023] 2. With the detachable design of the compression spring, compression springs of different pressures can be selected according to different usage environments and needs, flexibly adjusting rotational resistance and elasticity.

[0024] 3. With the detachable design of the central shaft and the connecting bushings at both ends, users can quickly replace the compression spring or other worn parts, improving maintenance efficiency and extending the service life of the device. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of this utility model;

[0026] Figure 2 This is a schematic diagram of the spiral lifting groove structure of this utility model;

[0027] Figure 3 This is a schematic diagram of the limiting pin structure of this utility model;

[0028] Figure 4 This is a schematic diagram of the structure of the long hinge of this utility model, which extends forward along the central axis;

[0029] Figure 5 This is a schematic diagram of the structure of the long hinge of this utility model, which retracts backward along the central axis.

[0030] In the diagram: 1. Central shaft; 11. Limiting pin; 12. Through hole; 2. Long hinge; 21. Connecting bushing; 211. Connecting hole; 22. Long handle; 3. Short hinge; 31. L-shaped plate; 32. Hollow cylindrical bushing; 311. Spiral lifting groove; 3111. Inclined track; 3112. Elliptical track; 4. Compression spring; 5. Pin. Detailed Implementation

[0031] In order to make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0032] In the description of this utility model, it should be understood that the terms "lateral", "longitudinal", "end", "edge", "sidewall", "upper", "lower", "upper part", "lower part", "directly above", "surface", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", "end", "head", "tail", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the technical solution of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] This application proposes a hinge device capable of synchronous rotation and axial extension, as detailed below:

[0034] For reference Figure 1 This application mainly consists of a central shaft 1, a limiting pin 11 set on the central shaft 1, long hinges 2 connected to both ends of the central shaft 1, a short hinge 3 set in the middle of the central shaft 1, and a compression spring 4 set on the central shaft 1 between the short hinge 3 and the long hinge 2. Through the coordinated arrangement of each group of structures, the rotation of the hinge device and the synchronous extension and retraction effect during the rotation can be realized.

[0035] For reference Figure 1 and Figure 4-5 The central shaft 1 is cylindrical with a smooth surface and the same diameter at the front and back, which can maintain the normal movement of the central shaft 1 within the short hinge 3.

[0036] A limiting pin 11 is provided in the middle of the surface of the central shaft 1. The limiting pin 11 is provided in two sets by default, or in one set or more sets; and is set in front and behind correspondingly.

[0037] For reference Figure 1-3 The two ends of the central shaft 1 are connected to the long hinge 2, wherein the long hinge 2 includes two connecting bushings 21 and a long handle 22. The two connecting bushings 21 are symmetrically arranged on both sides of the long handle 22. After the two connecting bushings 21 are set, a gap is formed between them, which does not affect the rotation of the subsequent device structure.

[0038] For reference Figure 1-3 The short hinge 3 is located on the central shaft 1 in the area between the two connecting bushings 21. The short hinge 3 includes an L-shaped plate 31 and a hollow cylindrical bushing 32. The hollow cylindrical bushing 32 is fitted onto the central shaft 1. The hollow cylindrical bushing 32 is provided with a spiral lifting groove 311 that is adapted to the limiting pin 11. The spiral lifting groove 311 is adapted to the limiting pin 11 and moves. When the long hinge 2 rotates, the limiting pin 11 moves along the slide direction of the spiral lifting groove 311. Thus, the long hinge 2 rotates and extends during the movement of the limiting pin 11. The L-shaped plate 31 is fixedly connected to the side of the hollow cylindrical bushing 32 away from the long handle 22 and is used to adapt the central shaft 1 and the long hinge 2 to move along the hollow cylindrical bushing 32.

[0039] Secondly, in order to constrain the movement between the short hinge 3 and the long hinge 2, a compression spring 4 is fitted on the central shaft 1 in the middle area of ​​one of the connecting bushings 21 on the short hinge 3 and the long hinge 2; the compression spring 4 is detachably connected to the hollow cylindrical bushing 32 connecting bushing 21 and the short hinge 3; thus, the compression spring 4 with different pressures can be adjusted according to different conditions such as the resistance to expansion and contraction during rotation.

[0040] For reference Figure 4-5 To facilitate the replacement of the compression spring 4, two detachable connecting bushings 21 are detachably installed at both ends of the central shaft 1. A through hole 12 is provided at each end of the central shaft 1, and two connecting holes 211 are provided on each connecting bushing 21, corresponding to the two ends of the through hole 12 and communicating with it. A pin 5 is inserted and fixed at the connection between the two connecting holes 211 and the through hole 12. After removing the pin 5, the connecting bushing 21 can be removed from the central shaft 1 for adjustment and replacement of the compression spring 4. The pin 5 is stably connected to the connecting holes 211 and the through hole 12, thus ensuring the connecting bushing 21 is stably connected to the central shaft 1 for operation.

[0041] Further references are available. Figure 1-5 To ensure the stable operation of the spiral lifting groove 311, the spiral lifting groove 311 is configured to include two parts: an inclined channel 3111 and an elliptical channel 3112. The inclined channel 3111 is inclined towards the side of the central shaft 1 where the compression spring 4 is located. When the position of the limiting pin 11 changes, it will move along the direction of the inclined channel 3111. The inclined setting triggers axial movement during rotation. The elliptical channel 3112 is connected to the side of the inclined channel 3111 away from the side where the compression spring 4 is located. After the long hinge 2 rotates back to its position, the compression spring 4 is compressed. At this time, the limiting pin 11 will be displaced into the elliptical channel 3112. Since the elliptical channel 3112 and the inclined channel 3111 are connected at an angle, the elliptical channel 3112 can reduce the occurrence of the fixed limiting pin 11 resetting on its own.

[0042] In this invention, the working steps of the device are as follows:

[0043] 1. First, based on practical application, select suitable compression springs 4 and install them at both ends of the central shaft 1;

[0044] 2. Secondly, the long hinge 2 is stably connected to the central shaft 1 by means of the pin 5;

[0045] 3. Finally, by rotating the long hinge 2, the limiting pin 11 on the central shaft 1 is moved along the direction of the spiral lifting groove 311, so that the long hinge 2 and the central shaft 1 can achieve rotational extension and retraction on the short hinge 3.

[0046] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments, and various changes and modifications can be made without departing from the spirit and scope of this utility model. All such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A hinge device capable of synchronous rotation and axial extension, characterized in that: include, The central shaft (1) is cylindrical, and a limiting pin (11) is provided in the middle of its surface; The long hinge (2) includes two connecting bushings (21) and a long handle (22). The two connecting bushings (21) are symmetrically arranged on both sides of the long handle (22). Both connecting bushings (21) are detachably connected to both ends of the central shaft (1). The short hinge (3) is located between the two connecting bushings (21) and sleeved on the central shaft (1); the surface of the short hinge (3) is provided with a spiral lifting groove (311) that is adapted to the limiting pin (11); the movement of the limiting pin (11) along the spiral lifting groove (311) causes the long hinge (2) and the central shaft (1) to rotate and axially extend and retract together along the short hinge (3); A compression spring (4) is detachably disposed between the short hinge (3) and one of the connecting bushings (21), and is sleeved on the central shaft (1).

2. The hinge device capable of synchronous rotation and axial extension according to claim 1, characterized in that: A through hole (12) is provided at both ends of the central shaft (1).

3. The hinge device capable of synchronous rotation and axial extension according to claim 2, characterized in that: The connecting bushing (21) is provided with two corresponding connecting holes (211), which correspond to the two ends of the through hole (12) and are connected to the through hole (12).

4. The hinge device capable of synchronous rotation and axial extension according to claim 3, characterized in that: A pin (5) is inserted at the connection point between the two connecting holes (211) and the through hole (12) for fixation.

5. The hinge device capable of synchronous rotation and axial extension according to claim 1, characterized in that: The short hinge (3) includes an L-shaped plate (31) and a hollow cylindrical bushing (32); The hollow cylindrical bushing (32) is sleeved on the central shaft (1); The L-shaped plate (31) is fixedly connected to the hollow cylindrical bushing (32) on the side away from the long handle (22).

6. The hinge device capable of synchronous rotation and axial extension according to claim 1, characterized in that: The spiral lifting groove (311) includes an inclined channel (3111) and an elliptical channel (3112); The inclined path (3111) is inclined toward the side of the central axis (1) where the compression spring (4) is located; The elliptical path (3112) is connected to the side of the inclined path (3111) away from the side where the compression spring (4) is located.

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