Detachable limiting hinge

Abstract

The detachable limiting hinge comprises a pin shaft and a base, a base is arranged at one end of the pin shaft, a first connecting structure is arranged on the base, a limiting structure is arranged on the side face of the end, away from the base, of the pin shaft, the base comprises a connecting base and an assembling base, and a second connecting structure is arranged on the connecting base. A rotating hole for the pin shaft to penetrate through and rotate is formed in the assembling base, a profiling groove communicated with the rotating hole is formed in one side of the rotating hole and used for allowing the limiting structure to extend and penetrate through, and the pin shaft can penetrate through the rotating hole to enable the limiting structure to be located on the other side of the assembling base; according to the detachable limiting hinge, matched detachment between the pin shaft and the base is achieved within a certain angle range, the pin shaft and the base cannot be assembled or cannot be separated after being assembled within another angle range, it is guaranteed that the pin shaft and the base cannot easily fall off while the assembling requirement is met, reliable safety is achieved, and the service life of the hinge is prolonged. And the overall structure is simple, and the disassembly mode is simple and rapid.

Description

Technical Field

[0001] The utility model relates to the technical field of hinges, and more specifically to a detachable limiting hinge. Background Art

[0002] In the field of mechanical design and engineering, hinges are an important connector that is widely used in various mechanical equipment and structures to achieve rotation and connection between components. Traditional hinge designs usually include a fixed part and a rotating part, which are connected by a pin to allow a certain angle of rotation.

[0003] At present, some detachable hinges have a complex disassembly structure and a cumbersome disassembly process, and even require the cooperation of multiple people, which is labor-intensive and not conducive to the replacement and maintenance of mechanical equipment. Therefore, there is a need for a detachable limit hinge with a simple structure and easy disassembly. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a detachable limit hinge, which can achieve detachable cooperation between the pin shaft and the base within a certain angle range, while within another angle range, the pin shaft and the base cannot be assembled or cannot be detached after assembly. While meeting the assembly requirements, it ensures that the pin shaft and the base will not fall off easily, has reliable safety, and the overall structure is relatively simple, and the disassembly method is simple and quick.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A detachable limit hinge comprises a pin shaft and a base, wherein a base is provided at one end of the pin shaft, a first connecting structure is provided on the base, a limit structure is provided on the side of an end of the pin shaft away from the base, the base comprises a connecting seat and an assembly seat, a second connecting structure is provided on the connecting seat, a rotating hole for the pin shaft to pass through and rotate is provided on the assembly seat, a contour groove connected to the rotating hole is provided on one side of the rotating hole, the contour groove is used to allow the limit structure to extend through, and the pin shaft can pass through the rotating hole so that the limit structure is located on the other side of the assembly seat.

[0007] Further, the limiting structure is a limiting protrusion, the contoured groove is an arc groove, and the limiting protrusion can rotate in the arc groove relative to the center of the rotating hole.

[0008] Furthermore, the first connection structure is a plurality of first threaded holes.

[0009] Furthermore, the second connection structure is a plurality of second threaded holes.

[0010] It is further described that the connecting seat and the assembling seat are in a vertical state, and a side of the connecting seat away from the assembling seat is in an arc shape.

[0011] Furthermore, the side of the base away from the first connecting structure is in an arc shape.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The utility model provides a structural form of a pin shaft, a base, a pedestal, a rotating hole, a contour hole and a limiting protrusion, so that the pin shaft can be quickly inserted and connected for assembly when it maintains a certain angle with the base (when the limiting protrusion is aligned with the contour hole), and when the limiting protrusion leaves the contour hole area, the anti-dropping between the pin shaft and the base can be achieved, so that the matching and disassembly can be achieved within a certain angle range, while within another angle range, the pin shaft and the rotating hole cannot be assembled or cannot be disassembled after assembly. While meeting the assembly requirements, it is ensured that the pin shaft and the base will not fall off easily, and the utility model has reliable safety, and the overall structure is relatively simple, and the disassembly method is simple and fast. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0015] Figure 1 A schematic diagram of the structure of a detachable limit hinge Figure 1 ;

[0016] Figure 2 A schematic diagram of the structure of a detachable limit hinge Figure 2 ;

[0017] Figure 3 It is a structural schematic diagram of the base and the pin shaft;

[0018] Figure 4 It is a structural schematic diagram of the base and the connecting seat;

[0019] Figure 5 This is an example diagram of a detachable limit hinge installed on the upper cover and inspection cover of the host;

[0020] Figure 6 for Figure 5 The enlarged view of point A in the middle;

[0021] Figure 7 This is a schematic diagram of the middle position of the inspection cover when it is opened for disassembly and assembly;

[0022] Figure 8 This is a schematic diagram of the maximum opening angle of the inspection cover when it is opened to 75° for disassembly and assembly;

[0023] Fig. 9 Schematic diagram of the inspection cover opening to a maximum angle of 90°;

[0024] The markings in the figure are: 1. pin shaft; 2. base; 3. limiting protrusion; 4. first threaded hole; 5. connecting seat; 6. assembly seat; 7. rotating hole; 8. contour hole; 9. second threaded hole; 10. inspection cover; 11. upper cover plate. DETAILED DESCRIPTION

[0025] In the description of the present invention, it should be noted that directional words, such as the terms "center", "lateral (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of narrating the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific protection scope of the present invention.

[0026] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. Therefore, the definition of "first" and "second" features can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "several" and "a number" is two or more, unless otherwise clearly and specifically defined.

[0027] A detachable limit hinge, such as Figure 1-4 As shown, it includes a pin shaft 1 and a base, a base 2 is provided at one end of the pin shaft 1, a first connecting structure is provided on the base 2, a limiting structure is provided on the side of the end of the pin shaft 1 away from the base 2, the base includes a connecting seat 5 and an assembly seat 6, a second connecting structure is provided on the connecting seat 5, a rotating hole 7 for the pin shaft 1 to pass through and rotate is provided on the assembly seat 6, a profiling groove connected to the rotating hole 7 is provided on one side of the rotating hole 7, the profiling groove is used to allow the limiting structure to extend through, and the pin shaft 1 can pass through the rotating hole 7 so that the limiting structure is located on the other side of the assembly seat 6.

[0028] In this embodiment, preferably, Figure 1 and Figure 3 As shown, the limiting structure is a limiting protrusion 3, the contoured groove is an arc groove, and the limiting protrusion 3 can rotate in the arc groove relative to the center of the rotating hole 7.

[0029] In this embodiment, preferably, Figure 2-3As shown, the first connection structure is a plurality of first threaded holes 4 , so that the base 2 can be connected to other workpieces through the first threaded holes 4 .

[0030] In this embodiment, preferably, Figure 2 As shown, the second connection structure is a plurality of second threaded holes 9 , so that the base can be connected to other workpieces through the second threaded holes 9 .

[0031] In this embodiment, preferably, Figure 4 As shown, the connecting seat 5 and the assembling seat 6 are in a vertical state, and the side of the connecting seat 5 away from the assembling seat 6 is in an arc shape.

[0032] In this embodiment, preferably, Figure 3 As shown, the side of the base 2 away from the first connection structure is in an arc shape, so that the base 2 can be closely fitted and rotated with the base.

[0033] Working principle:

[0034] Figure 5 The hinge assembly is taken as an example, wherein the base and the pedestal 2 are respectively mounted on the upper cover plate 11 and the inspection cover 10 of the host and fixed by screws, and the pin 1 passes through the rotation hole 7 on the assembly seat 6 to realize the hinge connection between the upper cover plate 11 and the inspection cover 10;

[0035] During the opening of the inspection cover 10, Figure 5-6 As shown, the hinge opening and closing starting angle is 25°. Figure 6 When the central direction is opened 25° clockwise, that is, when the inspection cover 10 is opened 25°, the limiting protrusion 3 of the pin shaft 1 can just pass through the contour hole 8 of the assembly seat 6 without any obstacles, so that the pin shaft 1 is inserted into the rotating hole 7 to form an assembly;

[0036] Continue to open the inspection cover 10, so that the inspection cover 10 or the hinge opening angle is within a certain range (in this example, it is set at 26° to 74°, such as Figure 6-8 As shown in the figure, the shaft of the left pin 1 and the special-shaped hole of the right base form a barrier-free fit, and the inspection cover 10 can be disassembled without any barrier (the pin 1 is disassembled and separated from the base);

[0037] When the opening angle of the inspection cover 10 or the hinge continues to increase (exceeding 75°) until it reaches the maximum (limited by the inspection cover 10 and the upper cover plate 11 in this example, the maximum opening angle in this example is 90°), during this process, the limiting column of the left pin shaft 1 and the special-shaped hole of the right base form a limiting structure, and the left pin shaft 1 and the right base cannot be disassembled, thereby achieving the purpose of limiting, that is, the inspection cover 10 cannot be disassembled when it is fully closed or fully opened.

[0038] The utility model provides a structure of the pin shaft 1, the base, the pedestal 2, the rotating hole 7, the profiling hole 8 and the limiting protrusion 3, so that the pin shaft 1 can be quickly inserted and connected for assembly when it maintains a certain angle with the base (when the limiting protrusion 3 is aligned with the profiling hole 8), and when the limiting protrusion 3 leaves the profiling hole 8 area, the anti-dropping between the pin shaft 1 and the base can be achieved, so that the matching and disassembly can be achieved within a certain angle range, while within another angle range, the pin shaft 1 and the rotating hole 7 cannot be assembled or cannot be disassembled after assembly, while meeting the assembly requirements, ensuring that the pin shaft 1 and the base will not fall off easily, having reliable safety, and the overall structure is relatively simple, and the disassembly method is simple and fast;

[0039] The hinge structure is particularly suitable for assembling the inspection cover 10 or other components with the same function of the mechanical product that is assembled and hoisted horizontally.

[0040] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A detachable limit hinge, characterized in that: It includes a pin shaft and a base, a base is provided at one end of the pin shaft, a first connecting structure is provided on the base, a limiting structure is provided on the side of the end of the pin shaft away from the base, the base includes a connecting seat and an assembly seat, a second connecting structure is provided on the connecting seat, a rotating hole for the pin shaft to pass through and rotate is provided on the assembly seat, a contour groove connected to the rotating hole is provided on one side of the rotating hole, the contour groove is used to allow the limiting structure to extend through, and the pin shaft can pass through the rotating hole so that the limiting structure is located on the other side of the assembly seat.

2. The detachable limit hinge according to claim 1, characterized in that: The limiting structure is a limiting protrusion, the contoured groove is an arc-shaped groove, and the limiting protrusion can rotate in the arc-shaped groove relative to the center of the rotating hole.

3. The detachable limit hinge according to claim 1, characterized in that: The first connection structure is a plurality of first threaded holes.

4. The detachable limit hinge according to claim 1, characterized in that: The second connection structure is a plurality of second threaded holes.

5. The detachable limit hinge according to claim 1, characterized in that: The connecting seat and the assembling seat are in a vertical state, and a side of the connecting seat away from the assembling seat is in an arc shape.

6. The detachable limit hinge according to claim 1, characterized in that: The side of the base away from the first connecting structure is in an arc shape.

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