Hinge with angle limiting function and box structure

Abstract

The utility model relates to the technical field of hinge structures, and provides a hinge with an angle limiting function and a box structure. The hinge with the angle limiting function comprises a static hinge body, and the static hinge body comprises a mounting plate and a static shaft shell arranged on the mounting plate; the movable hinge comprises a movable plate and a movable shaft shell arranged on the movable plate; the static shaft shell and the moving shaft shell are rotationally connected through the connecting shaft; a limiting groove is formed in the side, facing the movable shaft shell, of the static shaft shell and used for limiting the rotation angle range of the movable hinge relative to the static hinge. A limiting boss is arranged at the position, corresponding to the limiting groove, of the moving shaft shell, and the limiting boss is configured to rotate around the connecting shaft in the limiting groove. According to the hinge with the angle limiting function, the angle limiting and stopping effects can be achieved only by modifying the tangent plane structures of the movable hinge and the static hinge without adding new structural parts, the number of parts is reduced, the machining difficulty is lowered, and therefore the machining cost is lowered, and the production efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of hinge structure technology, and more specifically, to a hinge and box structure with angle limiting. Background Technology

[0002] In related technologies, hinges with angle limits include a movable hinge piece, a stationary hinge piece, and a pivot assembly. The pivot assembly includes an upper pivot, a lower pivot, and a return torsion spring disposed between the upper and lower pivots. Each end of the return torsion spring has a limiting member formed therein, and each end of the upper and lower pivots has a limiting clamp for holding the limiting member. The stationary hinge piece is automatically closed by the return torsion spring. The movable hinge piece has an arc-shaped slider, and the stationary pivot housing has a limiting groove. An angle baffle is provided at the end of the limiting groove. The arc-shaped slider slides in the limiting groove and the angle baffle limits the opening and closing angle between the movable and stationary hinge pieces, so that the hinge has the function of opening and closing automatically and can also adjust the closing force as needed.

[0003] This hinge with angle limit has the problems of a large number of parts, high processing difficulty, and high cost. Utility Model Content

[0004] To address the technical problems of the aforementioned hinges with angle limits, such as a large number of parts, high processing difficulty, and high cost, the first aspect of this application proposes a hinge with angle limits.

[0005] A second aspect of this application also proposes a box structure.

[0006] In view of the above, according to an embodiment of the first aspect of this application, this application proposes a hinge with angle limiting, comprising: a stationary hinge, the stationary hinge including a mounting plate and a stationary shaft housing disposed on the mounting plate; a movable hinge, the movable hinge including a movable plate and a movable shaft housing disposed on the movable plate; a connecting shaft, the stationary shaft housing and the movable shaft housing being rotatably connected by the connecting shaft; a limiting groove is provided on the side of the stationary shaft housing facing the movable shaft housing, the limiting groove being used to limit the rotation angle range of the movable hinge relative to the stationary hinge; a limiting boss is provided on the movable shaft housing at a position corresponding to the limiting groove, the limiting boss being configured to rotate around the connecting shaft within the limiting groove.

[0007] In conjunction with the first aspect, in some feasible embodiments, both the stationary shaft housing and the moving shaft housing include arc-shaped structures, with the central angle of the arc-shaped structure being between 180° and 360°; the inner diameter of the arc-shaped structure of the stationary shaft housing is the same as the inner diameter of the arc-shaped structure of the moving shaft housing, and the outer diameter of the arc-shaped structure of the stationary shaft housing is the same as the outer diameter of the arc-shaped structure of the moving shaft housing, with the connecting shaft inserted inside the arc-shaped structures of the stationary shaft housing and the moving shaft housing.

[0008] In conjunction with the first aspect, in some feasible methods, a receiving cavity is provided in the middle of the stationary shaft housing along the axial direction of the stationary shaft housing. The receiving cavity is used to accommodate the moving hinge. The movable plate can rotate in the receiving cavity. An upper stationary shaft housing and a lower stationary shaft housing are formed on both sides of the receiving cavity. A limiting groove is symmetrically provided on the adjacent side of the upper and lower stationary shaft housings. A limiting boss is provided on the adjacent sides of the moving shaft housing and the upper and lower stationary shaft housings. The limiting boss is configured to rotate around the connecting shaft in the limiting groove.

[0009] In conjunction with the first aspect, in some feasible embodiments, the stationary hinge also includes a connecting plate disposed between the mounting plate and the stationary shaft housing for connecting the mounting plate and the stationary shaft housing.

[0010] In conjunction with the first aspect, in some feasible methods, the connecting plate is an L-shaped connecting plate. One end of the L-shaped connecting plate is connected to the arc-shaped structure to form a closed space for the connecting shaft to pass through, and the other end is connected to the mounting plate. The L-shaped connecting plate and the mounting plate are connected to form a U-shaped structure, and the arc-shaped structure of the stationary shaft housing is located inside the U-shaped structure. The arc-shaped structure of the moving shaft housing is connected to one end of the movable plate to form a closed space for the connecting shaft to pass through. A part of the limiting groove is set on the arc-shaped structure, and the other part is set on the L-shaped connecting plate. The two limiting grooves form at least one arc shape that can be smoothly transitioned.

[0011] In conjunction with the first aspect, in some feasible ways, the mounting plate, the stationary shaft housing, and the connecting plate are integrally formed structures; the movable plate and the moving shaft housing are integrally formed structures.

[0012] In conjunction with the first aspect, in some feasible ways, the hinge with an angular limit provided on the connecting shaft also includes a snap-fit ​​provided on the stationary shaft housing, the snap-fit ​​being able to engage with the snap-fit.

[0013] In conjunction with the first aspect, in some feasible ways, the hinge with angular limiting also includes at least two mounting holes spaced apart on the mounting plate.

[0014] In conjunction with the first aspect, in some feasible ways, the hinge with angular limiting also includes: a wear-resistant coating disposed on the groove wall surface of the limiting groove.

[0015] The second aspect of this application proposes a box structure, including: a hinge with angle limiting as in any of the above technical solutions; a box body, on which a static hinge is disposed; a door body, on which a dynamic hinge is disposed, wherein the door body and the box body are rotatably connected by the hinge with angle limiting.

[0016] Compared with the prior art, this application has the following technical effects: The hinge design with angle limit provided by this application is ingenious. By setting a limit groove in the stationary shaft housing and setting a limit boss at the corresponding position in the moving shaft housing, the limit can be achieved by simply modifying the cross-sectional structure of the moving and stationary hinges. The angle limit and stop effect can be achieved without adding any new structural parts, which reduces the number of parts and the processing difficulty, thereby reducing processing costs and improving production efficiency.

[0017] Additional aspects and advantages of this application will become apparent in the following description or may be learned by practice of this application. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0019] Figure 1 A schematic diagram of a hinge with angular limiting in one embodiment of this application is shown;

[0020] Figure 2 It shows Figure 1 A schematic diagram of the static hinge in the embodiment;

[0021] Figure 3 It shows Figure 1 A schematic diagram of the moving hinge in the embodiment;

[0022] Figure 4 A schematic diagram of the box structure in one embodiment of this application is shown;

[0023] in, Figures 1 to 4 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0024] 100 Hinges with angle limits, 110 Static hinges, 112 Mounting plates, 114 Static shaft housings, 116 Connecting plates, 120 Moving hinges, 122 Movable plates, 124 Moving shaft housings, 130 Connecting shafts, 132 Buckles, 140 Limiting grooves, 150 Limiting bosses, 160 Mounting holes, 200 Box structure, 210 Box, 220 Door. Detailed Implementation

[0025] To better understand the above-mentioned objectives, features, and advantages of this application, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0026] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0027] The following reference Figures 1 to 4 The present application describes a hinge 100 with angular limiting and a box structure 200 in some embodiments.

[0028] like Figure 1 , Figure 2 and Figure 3 As shown, the first aspect of this application proposes a hinge 100 with angle limiting, comprising: a stationary hinge 110, the stationary hinge 110 including a mounting plate 112 and a stationary shaft housing 114 disposed on the mounting plate 112; a movable hinge 120, the movable hinge 120 including a movable plate 122 and a movable shaft housing 124 disposed on the movable plate 122; a connecting shaft 130, the stationary shaft housing 114 and the movable shaft housing 124 being rotatably connected by the connecting shaft 130; a limiting groove 140 is provided on the side of the stationary shaft housing 114 facing the movable shaft housing 124, the limiting groove 140 being used to limit the rotation angle range of the movable hinge 120 relative to the stationary hinge 110; a limiting boss 150 is provided on the movable shaft housing 124 at a position corresponding to the limiting groove 140, the limiting boss 150 being configured to rotate around the connecting shaft 130 within the limiting groove 140.

[0029] The hinge 100 with angle limiting provided in this application includes a stationary hinge 110, a movable hinge 120, and a connecting shaft 130. A limiting groove 140 is provided on the stationary shaft housing 114 of the stationary hinge 110, and a limiting boss 150 is provided on the movable shaft housing 124 at a position corresponding to the limiting groove 140. By providing the limiting groove 140 on the stationary shaft housing 114 and the limiting boss 150 at a corresponding position on the movable shaft housing 124, the two work together to precisely limit the rotation angle range of the movable hinge 120 relative to the stationary hinge 110, avoiding excessive rotation. The overall structure consists only of the stationary hinge 110 (including the mounting plate 112 and the stationary shaft housing 114), the movable hinge 120 (including the movable plate 122 and the movable shaft housing 124), and the connecting shaft 130, resulting in a simple structure and reduced manufacturing complexity and cost. Furthermore, the angle limitation is achieved through mechanical limiting, eliminating the need for complex electronic or hydraulic systems, ensuring stable operation, low failure rate, and convenient maintenance.

[0030] The mounting plate 112 of the stationary hinge 110 and the movable plate 122 of the movable hinge 120 can be flexibly installed on different equipment or components according to specific application scenarios, adapting to various installation environments and needs, and have wide versatility and adaptability. For example, the mounting plate 112 can be installed on the door frame, and the movable plate 122 can be installed on the door panel accordingly.

[0031] The hinge 100 with angle limit provided in this application has a clever design. The limit can be achieved by simply modifying the cross-sectional structure of the moving hinge 120 and the stationary hinge 110. The angle limit and stop effect can be achieved without adding any new structural parts, which reduces the number of parts and the processing difficulty, thereby reducing processing costs and improving production efficiency.

[0032] like Figure 2 and Figure 3 As shown, in some embodiments provided in this application, both the stationary shaft housing 114 and the moving shaft housing 124 include arc-shaped structures, with the central angle corresponding to the arc-shaped structure being between 180° and 360°; the inner wall diameter of the arc-shaped structure of the stationary shaft housing 114 is the same as the inner wall diameter of the arc-shaped structure of the moving shaft housing 124, and the outer circumferential diameter of the arc-shaped structure of the stationary shaft housing 114 is the same as the outer circumferential diameter of the arc-shaped structure of the moving shaft housing 124; the connecting shaft 130 is inserted into the interior of the arc-shaped structures of the stationary shaft housing 114 and the moving shaft housing 124.

[0033] In this implementation, both the stationary shaft housing 114 and the moving shaft housing 124 include arc-shaped structures, and the inner wall diameter and outer circumference diameter of the arc-shaped structures of the two housings are the same, ensuring a high degree of matching in geometric dimensions, facilitating precise assembly, effectively reducing assembly errors caused by dimensional differences, and improving the stability and reliability of the overall structure.

[0034] The central angle of the arc-shaped structure is between 180° and 360°, which can be flexibly adjusted according to actual needs. This allows for a greater degree of structural layout within a limited space, optimizing space utilization and making it suitable for scenarios with strict limitations on installation space. The connecting shaft 130 is inserted into the arc-shaped structure of both, enabling the stationary shaft housing 114 and the moving shaft housing 124 to be rotatably connected via the connecting shaft 130.

[0035] like Figure 1 , Figure 2 and Figure 3 As shown, in some embodiments provided in this application, a receiving cavity is provided in the middle of the stationary shaft housing 114 along the axial direction of the stationary shaft housing 114. The receiving cavity is used to accommodate the movable hinge 120. The movable plate 122 can rotate in the receiving cavity. An upper stationary shaft housing and a lower stationary shaft housing are formed on both sides of the receiving cavity. A limiting groove 120 is symmetrically provided on the adjacent side of the upper and lower stationary shaft housings. A limiting boss 150 is provided on the adjacent sides of the movable shaft housing 124 and the upper and lower stationary shaft housings. The limiting boss 150 is configured to rotate around the connecting shaft 130 in the limiting groove 140.

[0036] In this embodiment, a receiving cavity is provided in the middle of the stationary shaft housing 114 along the axial direction of the stationary shaft housing 114 for housing the movable hinge 120, and the movable plate 122 of the movable hinge 120 can also rotate in it. This structural layout of the receiving cavity makes full use of the internal space of the stationary shaft housing 114, making the overall structure more compact, reducing the overall volume of the equipment, and facilitating installation and arrangement in a limited space.

[0037] An upper stationary shaft housing and a lower stationary shaft housing are formed on the upper and lower sides of the accommodating cavity. A limiting groove 140 is symmetrically provided on the adjacent sides of the upper and lower stationary shaft housings. A limiting boss 150 is provided at the corresponding position of the moving shaft housing 124. The two work together to allow the moving shaft housing 124 to rotate around the connecting shaft 130 along the limiting groove 140, which plays a precise guiding role in the movement trajectory of the moving shaft housing 124, avoiding abnormal movements such as deviation and shaking, and ensuring stable and accurate operation of the equipment.

[0038] The matching structure of the limiting boss 150 and the limiting groove 140 enables precise limitation of the rotation angle range of the moving hinge 120 relative to the stationary hinge 110, thus avoiding excessive rotation.

[0039] like Figure 2 As shown, in some embodiments provided in this application, the static hinge 110 further includes a connecting plate 116, which is disposed between the mounting plate 112 and the static shaft housing 114, for connecting the mounting plate 112 and the static shaft housing 114.

[0040] In this embodiment, the connecting plate 116 strengthens the connection between the mounting plate 112 and the stationary shaft housing 114, improving the overall strength and rigidity of the stationary hinge 110, enabling it to withstand greater external forces and loads, effectively reducing structural deformation and damage, and extending its service life. The connecting plate 116 can disperse the stress generated when the hinge rotates, avoiding excessive stress concentration in local areas, reducing fatigue damage caused by stress concentration, and improving the structure's fatigue resistance.

[0041] Optionally, the angle between the connecting plate 116 and the mounting plate 112 is 90 degrees.

[0042] like Figure 2 and Figure 3As shown, in some embodiments provided in this application, the connecting plate 116 is an L-shaped connecting plate. One end of the L-shaped connecting plate is connected to the arc-shaped structure to form a closed space for the connecting shaft 130 to pass through, and the other end is connected to the mounting plate 112. The L-shaped connecting plate and the mounting plate 112 are connected to form a U-shaped structure. The arc-shaped structure of the stationary shaft housing 114 is located inside the U-shaped structure. The arc-shaped structure of the moving shaft housing 124 is connected to one end of the movable plate 122 to form a closed space for the connecting shaft 130 to pass through. A portion of the limiting groove 140 is provided on the arc-shaped structure, and another portion is provided on the L-shaped connecting plate. The two portions of the limiting groove 140 form at least one arc shape that can be smoothly transitioned.

[0043] In this embodiment, one end of the L-shaped connecting plate forms a closed space with the arc-shaped structure of the stationary shaft housing 114 for the connecting shaft 130 to pass through, while the other end connects to the mounting plate 112 to form a U-shaped structure, which encloses the arc-shaped structure of the stationary shaft housing 114. This optimizes the spatial layout and, through this closed and enclosed design, provides a stable support frame for key components. It can effectively resist external impacts and vibrations, reduce component wear caused by structural swaying, and improve the overall stability of the equipment.

[0044] The limiting groove 140 consists of two parts, which are respectively located on the arc-shaped structure and the L-shaped connecting plate, forming an arc shape that can be smoothly transitioned. This ensures that the limiting boss 150 moves smoothly within the limiting groove 140 during the rotation of the moving shaft housing 124, without jamming or impact, thus ensuring the stable operation of the equipment and extending the service life of the components.

[0045] like Figure 2 As shown, in some embodiments provided in this application, the mounting plate 112, the static shaft housing 114, and the connecting plate 116 are integrally formed structures.

[0046] In this embodiment, the mounting plate 112, the static shaft housing 114, and the connecting plate 116 are integrally formed, which greatly improves the overall rigidity, can resist stronger external impacts and loads, avoids cracking and deformation caused by stress concentration, and significantly extends the service life.

[0047] The one-piece molding structure ensures precise positioning and angles of all components, eliminating assembly errors and resulting in smoother, more seamless 120° rotation of the moving hinge, thus improving equipment operating quality. It eliminates assembly processes and materials, reducing manufacturing costs; no calibration is required during installation, allowing for rapid assembly and shortening the equipment production cycle.

[0048] like Figure 3 As shown, in some embodiments provided in this application, the movable plate 122 and the movable shaft housing 124 are integrally formed structures.

[0049] In this embodiment, the one-piece molded structure eliminates the weak points in the connection caused by traditional assembly, enhances the overall rigidity, and can effectively resist the risk of deformation and breakage when subjected to external forces or frequent opening and closing, thus extending the service life of the hinge and making it suitable for heavy-duty or high-frequency use scenarios.

[0050] Furthermore, the one-piece molding structure eliminates the accumulation of assembly errors, and the relative position of the moving shaft housing 124 and the movable plate 122 remains precise and constant, ensuring the stability of the axis when the moving hinge 120 rotates, with minimal wobbling and offset, thus improving the equipment's operational accuracy and stability. This reduces the number of parts and assembly steps, lowering manufacturing costs; no additional calibration is required during installation, accelerating equipment assembly and facilitating rapid production and delivery.

[0051] like Figure 1 and Figure 2 As shown, in some embodiments provided in this application, the connecting shaft 130 is provided with a notch, and the hinge 100 with angle limiting further includes: a buckle 132, which is provided on the stationary shaft housing 114 and can be engaged with the notch.

[0052] In this embodiment, the latch 132 engages with the notch, quickly locking the connecting shaft 130 and preventing it from rotating. Rotating the latch allows for engagement / disengagement of the latch 132 with the notch, achieving a seamless opening and locking process and saving operation time. The mechanical latching structure is simple and reliable, fatigue-resistant, wear-resistant, and maintains precise positioning even after long-term use, reducing maintenance frequency and costs, and exhibiting strong environmental adaptability.

[0053] In some embodiments provided in this application, the notch is an annular groove and the snap fastener 132 is an elastic snap spring.

[0054] In this embodiment, the annular groove provides an annular locking point, and the elastic retaining spring can be locked into any position within the groove as needed, achieving precise locking at multiple angles. The elastic retaining spring stores energy under pressure deformation and automatically rebounds to lock after being locked into the groove, combining self-locking and buffering functions to absorb impact force, reduce damage to the hinge and equipment from rigid collisions, extend service life, and reduce maintenance costs. The mechanical structure has no delay, and the locking / unlocking response is fast; the retaining spring and annular groove have no complex friction pairs, are wear-resistant and corrosion-resistant, adaptable to harsh environments, and ensure long-term stability. In some embodiments provided in this application, the hinge 100 with angle limiting further includes at least two mounting holes 160, spaced apart on the mounting plate 112.

[0055] In this embodiment, at least two mounting holes 160 are spaced apart on the mounting plate 112, which can be adapted to mounting bases with different spacing and layout.

[0056] Multi-point fixing can distribute the force, improve the connection strength between the hinge and the base, effectively resist vibration and impact, avoid loosening and displacement after long-term use, and ensure the stable operation of the equipment, especially suitable for high-frequency vibration environments.

[0057] In some embodiments provided in this application, the hinge 100 with angle limiting further includes: a wear-resistant coating disposed on the groove wall surface of the limiting groove 140.

[0058] In this embodiment, the wear-resistant coating on the groove wall of the limiting groove 140 significantly improves the surface hardness and anti-friction ability, effectively resists the scratches and wear generated by the limiting boss 150, reduces the risk of groove wall deformation and chip shedding, and keeps the hinge limiting accuracy and reliability stable during long-term high-frequency use, thus extending the maintenance cycle.

[0059] The coating reduces the coefficient of friction between the groove wall and the limiting boss 150, reducing movement resistance and jamming, making the hinge opening and closing smoother and without obstruction. At the same time, it reduces metal friction noise, optimizes the user experience of the equipment, and is suitable for scenarios with high requirements for quietness.

[0060] like Figure 4 As shown, the second aspect of this application proposes a box structure 200, including: a hinge 100 with angle limiting as in any of the above embodiments; a box 210, on which a static hinge 110 is disposed; a door 220, on which a movable hinge 120 is disposed, and the door 220 and the box 210 are rotatably connected by the hinge 100 with angle limiting.

[0061] The box structure 200 provided in this application has all the beneficial technical effects of the hinge 100 with angle limiting as described in any of the above embodiments, and will not be repeated here.

[0062] In practical applications, the connecting shaft 130 is a pin, which can fix the stationary hinge 110 to the door frame and the movable hinge 120 to the door panel. The stationary hinge 110 and the movable hinge 120 are connected by the pin. A limiting groove 140 that meets the opening angle is made on the stationary hinge 110, and a limiting boss 150 is added to the movable hinge 120. The limiting boss 150 of the movable hinge 120 is engaged with the limiting groove 140 of the stationary hinge 110. In this way, when the hinge rotates, the limiting boss 150 on the movable hinge 120 moves within the limiting groove 140 of the stationary hinge 110. When the hinge opening angle reaches a certain angle, the limiting boss 150 and the limiting groove 140 interfere, thereby achieving the effect of stopping or limiting. Different limiting grooves 140 can be designed according to different limiting angle requirements to meet the limiting angle of any angle within the range of 0 to 180 degrees.

[0063] In summary, the hinge 100 with angle limiting provided in this application is ingeniously designed. The limiting effect can be achieved by simply modifying the cross-sectional structure of the moving and stationary hinges 110. No new structural components need to be added to achieve the angle limiting and stopping effects, which reduces the number of parts and the processing difficulty, thereby reducing processing costs and improving production efficiency.

[0064] In this application, the term "multiple" refers to two or more unless otherwise expressly defined. The terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0065] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0066] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A hinge with angle limiting, characterized in that, include: A stationary hinge, the stationary hinge comprising a mounting plate and a stationary shaft housing disposed on the mounting plate; A movable hinge, the movable hinge including a movable plate and a movable shaft housing disposed on the movable plate; A connecting shaft is provided, through which the stationary shaft housing and the moving shaft housing are rotatably connected. The stationary shaft housing is provided with a limiting groove on the side facing the moving shaft housing, and the limiting groove is used to limit the rotation angle range of the moving hinge relative to the stationary hinge. A limiting boss is provided on the moving shaft housing at the position corresponding to the limiting groove, and the limiting boss is configured to rotate around the connecting shaft within the limiting groove.

2. The hinge with angle limiting according to claim 1, characterized in that, Both the stationary shaft housing and the moving shaft housing include an arc-shaped structure, and the central angle of the arc-shaped structure is between 180° and 360°. The inner diameter of the arc-shaped structure of the stationary shaft housing is the same as the inner diameter of the arc-shaped structure of the moving shaft housing, and the outer diameter of the arc-shaped structure of the stationary shaft housing is the same as the outer diameter of the arc-shaped structure of the moving shaft housing. The connecting shaft is inserted into the arc-shaped structures of the stationary shaft housing and the moving shaft housing.

3. The hinge with angle limiting according to claim 2, characterized in that, Along the axial direction of the static shaft housing, a receiving cavity is provided in the middle of the static shaft housing. The receiving cavity is used to accommodate the moving hinge. The movable plate can rotate in the receiving cavity. An upper static shaft housing and a lower static shaft housing are formed on both sides of the receiving cavity. The limiting groove is symmetrically arranged on the adjacent side of the upper static shaft housing and the lower static shaft housing. The moving shaft housing is provided with limiting bosses on the two sides adjacent to the upper stationary shaft housing and the lower stationary shaft housing, and the limiting bosses are configured to rotate around the connecting shaft within the limiting groove.

4. The hinge with angle limiting according to claim 3, characterized in that, The stationary hinge also includes: A connecting plate is disposed between the mounting plate and the stationary shaft housing for connecting the mounting plate and the stationary shaft housing.

5. The hinge with angle limiting according to claim 4, characterized in that, The connecting plate is an L-shaped connecting plate. One end of the L-shaped connecting plate is connected to the arc-shaped structure to form a closed space for the connecting shaft to pass through. The other end is connected to the mounting plate. The L-shaped connecting plate and the mounting plate are connected to form a U-shaped structure. The arc-shaped structure of the stationary shaft housing is located inside the U-shaped structure. The arc-shaped structure of the moving shaft housing is connected to one end of the movable plate to form a closed space for inserting and connecting shafts; One part of the limiting groove is set on the arc-shaped structure, and the other part is set on the L-shaped connecting plate. The two limiting grooves form at least one arc shape that can be smoothly transitioned.

6. The hinge with angle limiting according to claim 4, characterized in that, The mounting plate, the static shaft housing, and the connecting plate are integrally formed structures; The movable plate and the moving shaft housing are integrally formed.

7. The hinge with angle limiting according to any one of claims 1 to 6, characterized in that, The connecting shaft has a notch, and the hinge with angle limiting further includes: A snap fastener is provided on the stationary shaft housing, and the snap fastener can engage with the notch.

8. The hinge with angle limiting according to any one of claims 1 to 6, characterized in that, Also includes: At least two mounting holes are spaced apart on the mounting plate.

9. The hinge with angle limiting according to any one of claims 1 to 6, characterized in that, Also includes: A wear-resistant coating is applied to the surface of the groove wall of the limiting groove.

10. A box structure, characterized in that... include: A hinge with angular limiting as described in any one of claims 1 to 9; The housing, on which the static hinge is mounted; The door body, the movable hinge is mounted on the door body, and the door body and the box body are rotatably connected by the hinge with angle limit.

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