Hinge structure facilitating opening degree positioning

Abstract

The utility model relates to the technical field of hinges, in particular to a hinge structure convenient for opening degree positioning, which comprises a shaft and two groups of articulation pieces arranged at two ends of the shaft, each articulation piece comprises a base, a rotating plate and a stop block, one end of the rotating plate is provided with an extension block matched with the stop block in a limiting manner, and the hinge structure further comprises a positioning mechanism alternatively arranged at one end of the shaft. The positioning mechanism comprises a track plate and a positioning piece, the track plate is fixedly arranged on the check block, the positioning piece is movably arranged on the track plate, meanwhile, the moving range of the positioning piece is at least partially overlapped with the rotating stroke of the extension block, the opening and closing angle of the tank cover can be stable, and support is provided for normal operation of the thermal vacuum test tank.

Description

Technical Field

[0001] This utility model relates to the field of hinge technology, specifically to a hinge structure that facilitates positioning of the opening degree. Background Technology

[0002] In the field of aerospace technology, some components on satellites and spacecraft require thermal vacuum testing. Currently, thermal vacuum testing is conducted in a thermal vacuum test chamber, which consists of a chamber body and a lid. The lid is hinged to the chamber body via a hinge mechanism, which can be understood as a hinge structure. In the prior art, for example, patent CN216974508U discloses a novel horizontal vacuum tank door hinge mechanism. It solves the problem of hinge connection for non-rectangular doors by setting a hinge seat, a cover hinge, a stop block, and a lever. During the use of the thermal vacuum test tank, due to improper installation or environmental factors, the thermal vacuum test tank may tilt slightly. At this time, the tank cover, with an unstable center of gravity, will tend to deflect outward or towards the tank body. Deflection outward will cause the tank cover itself to hit the lever under the action of deflection inertia, which may easily damage the hinge structure and cause accidents. When deflecting towards the tank body, the tank cover needs to maintain a certain opening angle under the action of external force when feeding products into the tank body, which will bring inconvenience to thermal vacuum experiments. Based on this, we propose a hinge structure that is easy to position the opening degree. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a hinge structure that facilitates the positioning of the opening angle, which can stabilize the opening and closing angle of the can lid and provide support for the normal operation of the thermal vacuum test can.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a hinge structure for easy positioning of the opening, comprising a shaft and two sets of hinge components disposed at both ends of the shaft. Each hinge component includes a base, a rotating plate, and a stop block. One end of the rotating plate is provided with an extension block that cooperates with the stop block for limiting. The hinge structure further includes a positioning mechanism selectively disposed at one end of the shaft. The positioning mechanism includes a track plate and a positioning component. The track plate is fixedly disposed on the stop block, and the positioning component is movably disposed on the track plate. At the same time, the range of motion of the positioning component at least partially overlaps with the travel of the extension block.

[0005] Preferably, the positioning element includes a support element and a blocking element; the support element includes a pin movably mounted on the track plate, and the track plate has a track groove that cooperates with the pin; the blocking element is rotatably mounted on the underside of the track plate via the pin, and the rotational stroke of the outer end of the blocking element at least partially coincides with the rotational stroke of the extension block.

[0006] Preferably, the blocking component includes an upper rotating plate and a lower rotating plate slidably sleeved on the pin shaft. The upper rotating plate includes a stop block located on the outside of the main body. The stop block is located on the outside of the track plate and is not lower than the lower end face of the track plate. A vertically penetrating groove is formed on the upper rotating plate. The lower rotating plate is located below the upper rotating plate. The upper end of the lower rotating plate is provided with a push post extending into the groove, and the lower end is provided with a stop post located outside the stop block and extending downward. The stroke of the stop post at least partially overlaps with the stroke of the extension block.

[0007] Preferably, the groove has an arc-shaped structure.

[0008] Preferably, the track groove is an elongated structure formed around the axis.

[0009] Preferably, the track groove is a circular hole structure, and there are multiple track grooves distributed around the axis; the inner wall of the track groove is loosely fitted with the pin.

[0010] Preferably, the support further includes an upper shim; the upper shim is disposed on the pin shaft and on the upper side of the track plate; the outer diameter of the upper shim is larger than the width of the track groove.

[0011] Preferably, the lower rotating plate is an integral structure.

[0012] Preferably, the track groove is a minor arc groove.

[0013] Preferably, the outer edge of the track slab is provided with anti-slip grooves.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] By setting a track plate and a positioning element on the stop, the positioning element can be movably set along the track plate. At the same time, at least part of the positioning element can be set within the rotation range of the rotating plate to form a block. With this setting, the rotation range of the rotating plate can be controlled. Regardless of whether the center of gravity is biased towards the tank body or the tank cover, the positioning element can control the opening of the tank cover and make the opening and closing angle of the tank cover stable, providing support for the normal operation of the thermal vacuum test tank.

[0016] The positioning components include an upper washer, an upper rotating plate, a lower rotating plate, a pin, a shift post, a stop post, and a snap ring. The upper washer, upper rotating plate, and lower rotating plate are movably mounted on the track plate via the pin. The simple structure makes the assembly and maintenance of the positioning components more convenient and reduces the cost of use. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall hinge structure of this utility model;

[0018] Figure 2 This is a schematic diagram showing the hinge opening angle of this utility model being positioned.

[0019] Figure 3 This is an exploded view of the positioning mechanism of this utility model;

[0020] Figure 4 This is a schematic diagram of the upper rotating plate structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the lower rotating plate and the stop post structure of this utility model;

[0022] Figure 6 For the present utility model Figure 2 A schematic diagram of the stopping state of the positioning mechanism.

[0023] In the diagram: 1. Base, 2. Rotating plate, 3. Shaft, 4. Stop block, 5. Positioning mechanism, 21. Extension block, 51. Upper washer, 52. Track plate, 53. Upper rotating plate, 54. Lower rotating plate, 55. Pin, 56. Pulley, 57. Stop post, 58. Snap ring, 521. Track groove, 531. Slide groove, 532. Fixing block, 533. Stop block, 541. Lower rotating plate body, 542. Connecting block. Detailed Implementation

[0024] The specific embodiments of this utility model are described in detail below with reference to the accompanying drawings, so that those skilled in the art can more clearly understand how to practice this utility model. Although this utility model has been described in conjunction with its preferred embodiments, these embodiments are merely illustrative and not intended to limit the scope of this utility model.

[0025] See Figures 1-6 In one embodiment of this utility model, a hinge structure for facilitating the positioning of the opening degree includes: a shaft 3 and two sets of hinge components disposed at both ends of the shaft 3. The hinge components include a base 1, a rotating plate 2, and a stop block 4. The base 1 is fixedly connected to both the shaft 3 and the stop block 4. One end of the rotating plate 2 is slidably sleeved on the shaft 3. It can be understood that the rotating plate 2 can be rotatably connected to the base 1 through the shaft 3. After installation, the base 1 is fixedly connected to the tank body by bolts, while the other end of the rotating plate 2 is fixedly connected to the tank lid, realizing the hinge between the tank lid and the tank body. In order to control the opening and closing range of the tank lid, the rotating plate 2 is provided with an extension block 21 that cooperates with the stop block 4 for limiting. Under the limiting of the stop block 4, the rotating plate 2 can rotate within the range of 0° to 90°. The hinge structure also includes a positioning mechanism 5 selectively disposed at one end of the shaft 3. The positioning mechanism 5 can control the rotation range of the rotating plate 2. By controlling the opening degree of the tank lid, the opening and closing angle of the tank lid can be stabilized, providing support for the normal operation of the thermal vacuum test tank.

[0026] Specifically, the positioning mechanism 5 includes a track plate 52 and a positioning element. One end of the track plate 52 is fixed to the upper end of the stop block 4 by welding. Of course, the connection method between the track plate 52 and the stop block 4 is not limited to the welding mentioned above; it can also be a detachable connection to ensure that the positioning element can slide stably. The track plate 52 has a slightly curved plate structure, and a track groove 521 that runs vertically through the track plate 52 along its length is provided. The positioning element is movably installed in the track groove 521.

[0027] The positioning components include an upper washer 51, an upper rotating piece 53, a lower rotating piece 54, a pin 55, a shift post 56, a stop post 57, and a retaining ring 58. The upper washer 51, the upper rotating piece 53, and the lower rotating piece 54 are movably mounted on the track plate 52 via the pin 55. The shift post 56 and the stop post 57 are mounted on the lower rotating piece 54. The pin 55 slides through the track groove 521. The upper washer 51 is located on the upper side of the track plate 52, and the outer diameter of the washer 51 on the track plate is larger than the width of the track groove 521. The upper rotating piece 53 and the lower rotating piece 54 are located on the lower side of the track plate 52 via the retaining ring 58, with the upper rotating piece 53 located on the upper side of the lower rotating piece 54. The shift post 56 and the stop post 57 are located on the lower side of the track plate 52.

[0028] The upper rotating plate 53 has a groove 531 around its axis on its main body. A fixing block 532 is provided in the groove 531 so that the beginning and end of the groove 531 are not connected. The groove 531 can be considered as an arc-shaped structure. The upper rotating plate 53 also has a stop block 533 protruding from the upper end surface of the upper rotating plate 53. The stop block 533 corresponds to the fixing block. After assembly, the upper end surface of the stop block 533 is flush with the upper end surface of the track plate 52 and the stop block 533 is located outside the track plate 52 with a gap.

[0029] The lower rotating plate 54 consists of a lower rotating plate body 541 and a connecting block 542. The lower rotating plate body 541 is slidably sleeved on the pin 55. The deflector 56 is fixedly installed on the upper end of the lower rotating plate body 541. At the same time, the deflector 56 and the connecting block 542 are respectively placed on both sides of the axis of the lower rotating plate body 541. After assembly, the deflector 56 is located inside the slide groove 531. The upper end of the stop post 57 is fixedly connected to the connecting block 542, and the lower part of the stop post 57 extends downward. In this embodiment, the track groove 521 is opened around the axis of the shaft 3. When the positioning member slides along the track groove 521, the distance between it and the rotating plate 2 is fixed. This ensures that when the stop post 57 is rotated, part of the stroke of the stop post 57 can always coincide with the stroke of the extension block 21. Therefore, in implementation, the distance between the outer end of the extension block 21 and the axis of the shaft 3 should be between the minimum distance and the maximum distance between the stop post 57 and the axis of the shaft 3.

[0030] Instructions for use of this hinge structure: (Combined) Figure 2 and Figure 6As shown, taking the center of gravity biased towards the tank as an example, the can lid tends to move closer to the tank under its own weight. The rotating plate 2 rotates clockwise under the driving force generated by the weight of the can lid. The extension block 21 starts to rotate and moves away from the stop block 4. In order to stop the extension block 21 from rotating, the positioning component needs to be pushed to the required opening and closing angle first. Then, the stop post 57 is moved to the inside of the track plate 52 and is located within the stroke range of the extension block 21 that is about to rotate. After the stop post 57 is moved, the push post 56 can be made to abut against the fixed block 532 to complete the initial positioning. Under the action of its own weight, the can lid continues to push the stop post 57 to rotate counterclockwise. Due to the lever effect, the push post 56 simultaneously pushes the upper rotating plate 53 to rotate counterclockwise. After the stop block 533 is deflected, it abuts against the outer edge of the track plate 52. At this time, under the action of the driving force generated by the weight of the can lid, the positioning component is stuck and does not move, thereby preventing the rotation of the extension block 21. Finally, the can lid is fixed after opening and closing.

[0031] In one embodiment, the outer edge of the track plate 52 can be roughened with burrs. In practice, anti-slip grooves can be opened on the outer edge. The function of the anti-slip grooves is to increase the friction between the stop block 533 and the track plate 52, so that the upper rotating piece 53 can be more stable after it rotates circumferentially and abuts against the track plate 52.

[0032] In one embodiment, the upper gasket 51 and the pin 55 serve as support members for the upper rotating plate 53, the lower rotating plate 54, and the stop post 57, and can be an integral structure. By simplifying the structure of the positioning members, production costs can be reduced. Similarly, to simplify the structure, the lower rotating plate 54, the push post 56, and the stop post 57 can also be integrally formed, which can improve the overall integrity and reduce the positioning and assembly time.

[0033] In one embodiment, the track groove 521 is a continuous strip-shaped slide with an included angle of 0° to 90° from its first end to its last end, which can provide positioning support for the positioning component within the 0° to 90° angle range. However, the positioning angle may be uncertain. Therefore, in this embodiment, the track groove 521 can be a circular hole structure. Multiple track grooves 521 can be provided, and multiple track grooves 521 are opened around the axis of shaft 3. Each track groove 521 is correspondingly set at a different angle point. Correspondingly, the positioning component can be set one by one in the track groove 521 at different points. For this purpose, the upper shim 51 can be threaded to the upper end of the pin 55. During positioning, the upper shim 51 is first removed, the upper part of the pin 55 is passed through the track groove 521, and then the upper shim 51 is installed to complete the setting.

[0034] This technical solution involves setting a track plate and a positioning element on the stop block. The positioning element can be movably set along the track plate, and at least part of the positioning element can be set within the rotation range of the rotating plate to form a block. This setting can control the rotation range of the rotating plate. Regardless of whether the center of gravity is biased towards the tank body or the tank cover, the positioning element can control the opening degree of the tank cover and make the opening and closing angle of the tank cover stable, thus providing support for the normal operation of the thermal vacuum test tank.

[0035] Finally, it should be noted that 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 or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A hinge structure for easy positioning of the opening, comprising a shaft (3) and two sets of hinge components disposed at both ends of the shaft (3), the hinge components comprising a base (1), a rotating plate (2) and a stop (4), wherein one end of the rotating plate (2) is provided with an extension block that limits the positioning of the stop (4), characterized in that: The hinge structure also includes a positioning mechanism (5) selectively located at one end of the shaft (3). The positioning mechanism (5) includes a track plate (52) and a positioning element. The track plate (52) is fixed on the stop block (4), and the positioning element is movably located on the track plate (52). At the same time, the range of movement of the positioning element at least partially overlaps with the stroke of the extension block.

2. The hinge structure for easy positioning of the opening degree according to claim 1, characterized in that: The positioning component includes a support and a blocking component; the support includes a pin (55) movably mounted on the track plate (52), and the track plate (52) has a track groove that cooperates with the pin (55); the blocking component is rotatably mounted on the lower side of the track plate (52) via the pin (55), and the rotation stroke of the outer end of the blocking component at least partially coincides with the rotation stroke of the extension block.

3. The hinge structure for easy positioning of the opening degree according to claim 2, characterized in that: The blocking component includes an upper rotating plate (53) and a lower rotating plate (54) slidably sleeved on the pin (55). The upper rotating plate (53) includes a stop block located on the outside of the main body. The stop block is located outside the track plate (52) and is not lower than the lower end face of the track plate (52). A vertically penetrating groove is provided on the upper rotating plate (53). The lower rotating plate (54) is located below the upper rotating plate (53). The upper end of the lower rotating plate (54) is provided with a push post extending into the groove, and the lower end is provided with a stop post (57) located outside the stop block and extending downward. The stroke of the stop post (57) at least partially overlaps with the stroke of the extension block.

4. The hinge structure for easy positioning of the opening degree according to claim 3, characterized in that: The groove has an arc-shaped structure.

5. The hinge structure for easy positioning of the opening degree according to claim 2, characterized in that: The track groove is a long strip structure opened around the axis (3).

6. The hinge structure for easy positioning of the opening degree according to claim 2, characterized in that: The track groove is a circular hole structure, and there are multiple track grooves, which are distributed around the axis of the shaft (3); the inner wall of the track groove is loosely fitted with the pin (55).

7. The hinge structure for easy positioning of the opening degree according to claim 2, characterized in that: The support also includes an upper shim (51); the upper shim (51) is located on the pin (55) and on the upper side of the track plate (52); the outer diameter of the upper shim (51) is greater than the width of the track groove.

8. The hinge structure for easy positioning of the opening degree according to claim 3, characterized in that: The lower rotating plate (54) is an integral structure.

9. The hinge structure for easy positioning of the opening degree according to claim 5, characterized in that: The track groove is a minor arc groove.

10. The hinge structure for easy positioning of the opening degree according to claim 3, characterized in that: The outer edge of the track plate (52) is provided with anti-slip grooves.

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