Hinge arrangement

Abstract

Hinge assembly comprising: a first hinge body (1) with a first joint part (1b); a second hinge body (2) having a second hinge part (2b), the second hinge part (2b) being hingedly connected to the first hinge part (1b) to enable a relative pivoting movement in a direction of rotation; and a limiting structure (3) with a first rotary part (3a) and a second rotary part (3b), wherein the first rotary part (3a) is arranged on the first joint part (1b) and has a first limiting element (32), and the second rotary part (3b) is arranged on the second joint part (2b), is axially opposite the first rotary part (3a), and has a second limiting element (36), wherein the first limiting element (32) and the second limiting element (36) abut one another in the direction of rotation.

Description

Technical FieldThe present invention relates to a hinge arrangement, in particular a hinge arrangement for connecting two bodies, so that they can be pivoted relative to one another.Prior ArtGenerally, a door panel may be connected to a wall or door frame by known hinges. The user may push or pull the door panel so that it may pivot relative to the wall or door frame. In particular, when the door leaf is pushed to enter a building or room, a wall, furniture or another object is often located behind the door leaf. Therefore, a door stopper is normally attached to a predetermined location on the floor to prevent the door panel from excessively pivoting during sliding and abutting against the wall, furniture, or other object, which could result in damage to the door panel or object. When the door leaf contacts the door stopper during pivoting, it can stop, limiting the pivoting range of the door leaf and avoiding accidents. However, this door stopper protrudes from the ground, which can impede the passenger traffic and even lead to the persons stinging and dropping above it.Content of the Present InventionIn order to solve the above problems, it is an object of the present invention to provide a hinge assembly which can limit the pivoting of two hinge bodies within a certain range.The directional terms or similar terms such as "front", "rear", "left", "right", "top", "bottom", "inside", "outside", "lateral", etc. used in the present invention mainly refer to the directions in the accompanying drawings. These directional terms or similar terms are intended to be illustrative and understood only of the various embodiments of this invention and are not intended to limit this invention.The quantities used in the present invention, such as "a" or "an", for components and components are for ease of illustration only and convey the general meaning of the scope of this invention. In the context of this invention, they are to be understood as "at least one / one", the singular term also including the plural, unless obviously meant otherwise.The terms "first", "second",... and "N-th" used in the present invention are used mainly to distinguish various features or properties (e.g. components, directions or method steps etc.) and do not imply a maximum / minimum number of the features in question nor a specific order.The terms such as "connect", "combine" or "assemble" used in the present invention include both releasable connections in which the components can be non-destructively separated after connection, and non-releasable connections. A person skilled in the art can choose the suitable variant depending on the material of the components to be connected or the assembly requirements.The hinge assembly according to the invention comprises a first hinge body having a first hinge part; a second hinge body having a second hinge part, the second hinge part being hingedly connected to the first hinge part to allow relative pivotal movement in a rotational direction; and a limiting structure having a first rotating part and a second rotating part, the first rotating part being arranged on the first hinge part and having a first limiting element, and the second rotating part being arranged on the second hinge part, axially opposite the first rotating part, and having a second limiting element, the first limiting element and the second limiting element abutting each other in the rotational direction.Accordingly, with the hinge assembly according to the present invention, excessive swing of the door panel can be effectively prevented by the restriction structure being disposed between the first hinge part and the second hinge part; when the first hinge part of the first hinge body and the second hinge part of the second hinge body swing relative to each other, they respectively move the first rotating part and the second rotating part to rotate relative to each other; and by the abutment of the first and second restriction members, the relative swing motion of the first hinge body and the second hinge body is stopped, thereby restricting the swing range of the door panel fixed to the first hinge body.Here, the first rotating part has a displacement surface, wherein the first limiting element and the displacement surface are adjacent in the rotational direction. In this way, the second limiting element can be aligned by the displacement surface of the first rotating part so that it abuts the first limiting element.Here, the second rotating part has a displacement surface, and the second restricting member and the displacement surface of the second rotating part are adjacent in the rotational direction. In this way, the first limiting element can be aligned by the displacement surface of the second rotating part so that it abuts the second limiting element.Here, the first hinge part has, on an upper end surface, a receiving groove in which the first rotating part is detachably arranged. In this way, the first rotating part can be replaced and maintained conveniently when worn.Here, the second hinge part has, on an inner end face, a receiving groove in which the second hinge part is arranged in a removable manner. In this way, the second rotating part can be replaced and maintained conveniently when worn.The hinge assembly of the invention further comprises an axial translation structure having first and second axle supports. The first hinge part has an upper end surface and a lower end surface located at opposite ends of the first hinge part, respectively, the first rotating part of the limiting structure is disposed on the upper end surface, and the first axis support of the axial displacement structure is disposed on the lower end surface. The second hinge part has two inner end surfaces respectively aligned with the upper and lower end surfaces, the second hinge part is disposed on one of the inner end surfaces and axially faces the first hinge part, and the second axle support is disposed on the other inner end surface so that the second axle support axially abuts the first axle support. The first and second axle supports are rotatable relative to each other in the rotational direction, whereby the first and second axle supports execute an axial relative displacement. In this way, the door panel attached to the first hinge body may be lifted during pivoting when the first and second axle supports execute an axial relative displacement.The first axle support has a guide end surface, wherein the guide end surface has an upper surface and a lower surface, wherein an axial step distance is formed between the upper and lower surfaces. The second axle support has a guide end surface, the guide end surface of the second axle support having an upper surface and a lower surface, the axial step distance being formed between the upper and lower surfaces of the second axle support. In this way, the door panel attached to the first hinge body may be raised during pivoting by the axial step distance when the upper surface of the first axle support and the upper surface of the second axle support abut each other.At this time, when the upper surface of the first axle support and the lower surface of the second axle support or the lower surface of the first axle support and the upper surface of the second axle support abut each other, the boundary structure between the first rotating part and the second rotating part has an axial distance, which axial distance corresponds to the axial step distance. In this way, the first rotating part and the second rotating part can be approached to each other when the upper surface of the first axle support and the upper surface of the second axle support abut each other. As a result, the first and second delimiting elements bear against one another in the rotational direction.A guide slope connects the upper surface of the first axle support to its lower surface, and a guide slope connects the upper surface of the second axle support to its lower surface. In this way, the guidance of the guide slope facilitates the relative rotation between the first axle support and the second axle support.A fairing covers the first joint part, wherein the fairing has two openings which are aligned axially with axis holes of the first and second joint parts. Thus, the trim may prevent the first hinge portion from being exposed, thereby providing the hinge assembly with a better external appearance.DESCRIPTION OF THE FIGURESFigure 1 is an exploded view of a preferred embodiment of the present invention. Figure 2 is a sectional view of a preferred embodiment of the present invention in assembled condition. FIG. 3 is a sectional view taken along the line III-III in FIG. 2. FIG. 4 is an axial relative displacement diagram of the first joint member and the second joint member in a preferred embodiment of the present invention. FIG. 5 is a sectional view taken along line V-V in FIG. 4.DETAILED EMBODIMENTSIn order to make the above and other objects, features and advantages of the present invention clearer and more comprehensible, preferred embodiments of the present invention are described below and explained in detail with reference to the attached drawings. In addition, in various drawings, elements denoted by the same symbol are considered to be identical, and description thereof is omitted.Reference is now made to FIG. 1, which shows a preferred embodiment of the hinge arrangement according to the invention. It comprises a first hinge body 1, a second hinge body 2 and a limiting structure 3, wherein the first hinge body 1 is hingedly connected to the second hinge body 2, and the limiting structure 3 forms a limitation in the relative pivoting direction of the first hinge body 1 and the second hinge body 2.The first hinge body 1 has a fixed part 1 a. The fixed part 1 acan be fixed to a door panel, frame, or wall by, for example, screwing, locking, or welding, which is not limited in the present invention. In this embodiment, the first hinge body 1 is exemplarily attached to a door panel D. The fixed part 1 acan be formed as a plate body. The first hinge body 1 has a first hinge part 1 b. The first hinge part 1 bhas an axle hole 11. The first hinge part 1 bmay have an upper end surface 12 and a lower end surface 13. The upper end surface 12 and the lower end surface 13 are respectively located at opposite ends of the first hinge part 1 b. The axle hole 11 may pass through the upper end surface 12 and the lower end surface 13. An axis O may extend through the axis hole 11. In this embodiment, the first hinge part 1 bmay be formed protruding at one side of the fixed part 1 a. Preferably, the first joint part 1 bmay have an arc-shaped outer circumferential surface in radial cross section with respect to the axis O. In this way, the first hinge body 1 can have better ease of movement when pivoting by means of the first hinge part 1 b(as will be explained in more detail later).The second hinge body 2 has a fixed part 2 a. The fixed part 2 acan be fixed to a door panel, frame or wall, for example, by screwing, locking or welding. In this embodiment, the second hinge body 2 is exemplarily fixed to a wall W. The fixed part 2 acan be formed as a plate body. The second hinge body 2 has a second hinge part 2 b. The second hinge part 2 bmay be hingedly connected to the first hinge part 1 bof the first hinge body 1. Further, the second hinge part 2 bhas an axle hole 21. The shaft hole 21 may pass through opposite ends of the second hinge part 2 b. The axis O of the first hinge part 1 bmay extend through this axis hole 21.In this embodiment, the second hinge part 2 bmay be formed as a slot. The second hinge part 2 bmay have a space S. The second hinge part 2 bmay have two inner end surfaces 22. The two inner end surfaces 22 are axially opposed in the space S. The axle hole 21 extends from one of the two inner surfaces 22 through the space S to the other. The first hinge part 1 bmay be located in the space S such that the axis hole 11 of the first hinge part 1 bis coaxial with the axis hole 21 of the second hinge part 2 b. The two inner surfaces 22 may be respectively axially aligned with the upper end surface 12 and the lower end surface 13 of the first hinge part 1 b. In this way, an axle element T can be guided with one end T 1 through the two axle holes 11, 21. This end T 1 can be fixed by a fastening element T 2 such as a screw to prevent the axle element T from slipping out of the two axle holes 11, 21. As a result, the first hinge body 1 and the second hinge body 2 can pivot relative to one another.The first hinge part 1 bcan prevent interference with the inner slit wall of the second hinge part 2 bby its arc-shaped outer circumferential surface, and thus the first hinge part 1 band the second hinge part 2 bcan have better ease of movement when relatively pivoted. Preferably, a fairing F may be arranged inside the space S of the second hinge part 2b. The fairing F may cover the first hinge part 1 b. The fairing F may have two openings F 1. The two openings F 1 are respectively aligned axially with the axis hole 11 of the first joint part 1 band the axis hole 21 of the second joint part 2 b. In this way, the trim F can cover the first hinge part 1 bto prevent the first hinge part 1 bfrom being exposed, thereby providing the hinge assembly with a better external appearance.The delimiting structure 3 can be located between the first joint part 1 band the second joint part 2 b. The limiting structure 3 is provided to form a limitation of the relative pivoting of the first joint part 1 band the second joint part 2 b. More specifically, the limiting structure 3 may include a first rotating part 3 a. The first rotating part 3 acan be arranged on the first hinge part 1 b. The first rotating part 3 aincludes a through hole 31. The through hole 31 is aligned axially with the axis hole 11 of the first hinge part 1 b. The through hole 31 may serve to pass through the axle element T. In this way, the first rotating part 3 acan rotate synchronously with the pivoting of the first hinge part 1 b.The first rotating part 3 aincludes a first restricting member 32 and a displacement surface 33. The first restricting member 32 and the displacement surface 33 are collectively arranged around the through hole 31. The first limiting element 32 can be designed as a projection. The first restricting member 32 and the displacement surface 33 are adjacent in the circumferential direction of the through hole 31.For example, the first rotating part 3 acan be integrally molded with the first hinge part 1 b. Alternatively, in this embodiment, the upper end surface 12 of the first hinge part 1 bmay be provided with a receiving groove 121, and the first rotating part 3 ais detachably disposed in the receiving groove 121 via a connecting portion 34 by press fitting or locking, etc. Preferably, the receiving groove 121 may have a non-circular radial cross section, and the connecting portion 34 may have a shape corresponding to the receiving groove 121 to prevent the first rotating part 3 aand the first hinge part 1 bfrom making relative rotation to each other. In this way, the first rotating part 3 acan be replaced and maintained conveniently when worn.The limiting structure 3 can have a second rotating part 3 b. The second rotating part 3 bmay be arranged on the second hinge part 2 b. The second rotating part 3 bhas a through hole 35. The through hole 35 is aligned axially with the axis hole 21. The through hole 35 may serve to pass through the axle element T. The second rotating part 3 bhas a second limiting element 36 and a displacement surface 37. The second restricting member 36 and the displacement surface 37 are collectively arranged around the through hole 35. The second limiting element 36 can be designed as a projection. The second restricting member 36 and the displacement surface 37 are adjacent in the circumferential direction of the through hole 35.For example, the second rotating part 3 bmay be integrally molded with the second hinge part 2 b. Alternatively, in this embodiment, one of the inner end surfaces 22 may be provided with a receiving groove 221, and the second rotating part 3 bis detachably disposed in the receiving groove 221 by means of a connecting portion 38 through press fitting or locking, etc. Preferably, the receiving groove 221 may have a non-circular radial cross section, and the connecting portion 38 may have a shape corresponding to the receiving groove 221 to prevent the second rotating part 3 band the second hinge part 2 bfrom rotating relative to each other. In this way, the second rotating part 3 bcan be replaced and maintained conveniently when worn.With reference to FIGS. 2 and 5, it is to be noted in particular that the second rotating part 3 bis axially opposed to the first rotating part 3 a. In this embodiment, the first rotating part 3 ais disposed in the receiving groove 121 of the upper end surface 12 of the first hinge part 1 b. Thus, the second rotating part 3 bin the second hinge part 2 bis disposed in the receiving groove 221 of the inner end surface 22 that axially faces the upper end surface 12. The first limiting element 32 of the first rotating part 3 aand the second limiting element 36 of the second rotating part 3 bare not aligned axially with respect to one another, i.e. the first limiting element 32 is aligned with the displacement surface 37 and the second limiting element 36 is aligned with the displacement surface 33. In this way, the first limiting member 32 and the second limiting member 36 can abut each other with the relative rotation of the first rotating part 3 aand the second rotating part 3 bin a rotational direction R. By the first limiting element 32 and the second limiting element 36, a limitation in the rotational direction R can be formed.With reference to FIGS. 3 and 5, it is further noted that the relative rotation of the first rotating part 3 aand the second rotating part 3 bis 360° rotation about the axis O. Therefore, the user can set a predetermined angular distance from the axis O between the first restricting member 32 and the second restricting member 36 as needed, whereby the first rotating part 3 aand the second rotating part 3 bhave a predetermined relative rotating range. For example, by detachably constructing the first rotating part 3 aand the second rotating part 3 bas needed, the user can replace the first rotating part 3 aand the second rotating part 3 bwhich are at a predetermined angular distance from each other.Accordingly, when the first hinge body 1 and the second hinge body 2 pivot relative to each other, the first rotating part 3 aand the second rotating part 3 bare respectively moved to rotate relative to each other. By the abutment of the first limiting element 32 and the second limiting element 36, the relative pivoting movement of the first hinge body 1 and the second hinge body 2 is stopped, as a result of which the pivoting range of the door leaf D fastened to the first hinge body 1 is limited. This can effectively prevent the door panel D from excessively pivoting and hitting an obstacle.In particular, it should be mentioned that, in a further embodiment, the first rotating part 3 acan also be arranged on the lower end face 13 of the first joint part 1 b, while the second rotating part 3 bin the second joint part 2 bis arranged on the inner end face 22 which axially lies opposite the lower surface 13. Accordingly, when the first hinge body 1 and the second hinge body 2 pivot relative to each other, the pivoting range of the door panel D attached to the first hinge body 1 is also limited by the abutment of the first limiting member 32 and the second limiting member 35. Moreover, in this embodiment, the first restricting member 32 as a protrusion and the second restricting member 35 as a protrusion will abut each other in the rotational direction R. However, it is also possible for the first limiting element 32 and the second limiting element 35, which are each designed as a projection and as a matching depression, to bear against one another. The present invention does not limit this.As shown in FIGS. 1 and 2, the hinge assembly according to the invention may further comprise an axial displacement structure 4. The axial displacement structure 4 may be located between the first joint part 1 band the second joint part 2 b. When the first hinge part 1 band the second hinge part 2 bvoke relative to each other, axial displacement can be performed by the axial displacement structure 4, whereby the door panel D attached to the first hinge body 1 can be lifted during the pivoting to avoid contact wear of the lower edge of the door panel with the ground. For example, in a bathroom door panel, the weather strip attached to the lower edge of the bathroom door panel can be prevented from being damaged by friction with the floor. In this embodiment, the axial displacement structure 4 may be disposed between the lower end surface 13 of the first hinge part 1 band the second hinge part 2 bwhen the limiting structure 3 is present between the upper end surface 12 of the first hinge part 1 band the second hinge part 2 b.More specifically, the axial displacement structure 4 may include a first axle support 4 a. The first axle support 4 acan be arranged on the first joint part 1 b. The first axle support 4 aincludes a through hole 41. The axis O may extend through the through hole 41 such that the through hole 41 is coaxial with the axis hole 11 of the first hinge part 1 b. The first axle support 4a has a guide end surface 42. The guide end surface 42 is disposed around the through hole 41. Further, the guide end surface 42 includes an upper surface 421 and a lower surface 422. An axial step interval H 1 is formed between the upper surface 421 and the lower surface 422. A guide slope 423 connects the upper surface 421 to the lower surface 422. Preferably, the guide end surface 42 can have two upper surfaces 421 and two lower surfaces 422 which are each arranged mirror-symmetrically.For example, the first axle support 4 acan be integrally formed with the first hinge part 1 b. Alternatively, in this embodiment, the lower end surface 13 may be provided with a receiving groove 131, and the first shaft support 4 ais detachably disposed in the receiving groove 131 at a connecting portion 43 by press fitting or locking, etc. Preferably, the receiving groove 131 may have a non-circular radial cross section, and the connecting portion 43 may have a shape corresponding to the receiving groove 131 to prevent the first shaft support 4 aand the first hinge part 1 bfrom making relative rotation to each other.The axial displacement structure 4 may include a second axle support 4 b. The second axle support 4 bmay be arranged on the second joint part 2 b. The second axle support 4 bis axially opposite to the first axle support 4 a. The second axle support 4 bhas a through hole 44. The axis O may extend through the through hole 44 such that the through hole 44 is coaxial with the axis hole 21 of the second hinge part 2 b. The second axle support 4 bhas a guide end surface 45. The guide end surface 45 is disposed around the through hole 44. Further, the guide end surface 45 includes an upper surface 451 and a lower surface 452. Between the upper surface 451 and the lower surface 452, there is an axial step clearance H 1. A guide slope 453 connects the upper surface 451 to the lower surface 452. Preferably, the guide end surface 45 can have two upper surfaces 451 and two lower surfaces 452, which are each arranged mirror-symmetrically.For example, the second axle support 4 bmay be integrally formed with the second hinge part 2 b. Alternatively, in this embodiment, when the first shaft support 4 ais disposed on the lower end surface 13 of the first hinge part 1 b, the inner end surface 22 opposing the lower end surface 13 may be provided with the receiving groove 221, and the second hinge part 3 bis detachably disposed in the receiving groove 221 at a connection portion 46 by press fitting or locking, etc. Preferably, the receiving groove 221 may have a non-circular radial cross section, and the connecting portion 46 may have a shape corresponding to the receiving groove 221 to prevent the second axle support 4 band the second hinge part 2 bfrom making relative rotation to each other.As shown in FIGS. 2 and 4, the first axle support 4 aand the second axle support 4 bmay be engaged with each other through the upper surfaces 421, 451 and the lower surfaces 422, 452. When the first hinge body 1 and the second hinge body 2 pivot relative to each other, they respectively move the first axle support 4 aand the second axle support 4 bto rotate relative to each other. The upper surfaces 421, 451 can be guided by the guide slopes 453, 453, so that the upper surface 421 of the first axle support 4 aand the upper surface 451 of the second axle support 4 bcan be approached relative to each other and can abut against each other. As a result, the first axle support 4 aand the second axle support 4 bexecute relative axial displacement, so that the door panel D attached to the first hinge body 1 can be raised during pivoting.Note that, when the first axle support 4 aand the second axle support 4 bcan be engaged with each other, the restriction structure 3 may have an axial distance H 2 between the first rotating part 3 aand the second rotating part 3 b(e.g., the axial distance between the first restriction member 32 and the displacement surface 33, and between the second restriction member 36 and the displacement surface 37). This axial distance H 2 corresponds to the axial step distance H 1 between the upper surfaces 421, 451 and the lower surfaces 422, 452. In this way, the axial distance H 2 may form an axial displacement clearance of the axial displacement structure 4. When the axial displacement structure 4 rises by the step distance H 1, the first restricting member 32 and the second restricting member 36 may overlap in the radial direction and thus abut each other in the rotational direction R.In summary, with the hinge assembly according to the invention, excessive pivoting of the door leaf can be effectively prevented by the limiting structure being arranged between the first hinge part and the second hinge part; when the first hinge part of the first hinge body and the second hinge part of the second hinge body pivot relative to each other, they respectively move the first rotating part and the second rotating part for relative rotation; and by the abutment of the first and second limiting elements, the relative pivoting movement of the first hinge body and the second hinge body is stopped, thereby limiting the pivoting range of the door leaf fastened to the first hinge body.Although the present invention has been disclosed in the above preferred embodiments, it is not limited thereto. Any person skilled in the art can make various changes and modifications to the above-mentioned embodiments within the spirit and scope of the present invention, which still fall within the technical scope of the present invention. Therefore, the scope of the present invention should include all modifications which come within the meaning and range of equivalents to those set forth in the appended claim.List of reference characters1 First hinge body 1 a, 2 aFixed part 1 bFirst hinge part 11, 21 Axle hole 12 Upper end surface 121, 131, 221 Receiving groove 13 Lower end surface 2 Second hinge body 2 bSecond hinge part 22 Inner end surface 3 Limiting structure 3 aFirst rotating part 3 bSecond rotating part 31, 35 Through hole 32 First limiting member 33, 37 Displacement surface 34, 38, 43, 46 Connecting portion 36 Second limiting member 4 Axial displacement structure 4 aFirst axle support 4 bSecond axle support 41, 44 Through hole 42, 45 Guide end surface 421, 451 Upper surface 422, 452 Lower surface 423, 453 Guiding slope D Door leaf W Wall O Axis S Space T Axis element T 1 End T 2 Fastening element F Cladding F 1 Opening H 1 Axial step distance H 2 Axial distance

Claims

A hinge assembly comprising: a first hinge body (1) having a first hinge part (1b); a second hinge body (2) having a second hinge part (2b), the second hinge part (2b) being hingedly connected to the first hinge part (1b) to allow relative pivotal movement in a rotational direction; and a limiting structure (3) having a first rotating part (3a) and a second rotating part (3b), the first rotating part (3a) being arranged on the first hinge part (1b) and having a first limiting element (32), and the second rotating part (3b) being arranged on the second hinge part (2b), axially opposite the first rotating part (3a), and having a second limiting element (36), the first limiting element (32) and the second limiting element (36) abutting each other in the rotational direction.The hinge assembly according to claim 1, wherein the first rotating part (3a) has a displacement surface (33), the first limiting member (32) and the displacement surface (33) being adjacent in the rotational direction.The hinge assembly according to claim 2, wherein the second rotating part (3b) has a displacement surface (37), the second limiting member (36) and the displacement surface (37) of the second rotating part (3b) being adjacent in the rotational direction.Hinge assembly according to claim 1, wherein the first hinge part (1b) comprises a receiving groove (121), in which the first rotating part (3a) is removably arranged.Hinge assembly according to claim 4, wherein the second hinge part (2b) comprises a receiving groove (221), in which the second rotating part (2b) is removably arranged.The hinge assembly according to claim 1, further comprising an axial displacement structure (4) having a first axis support (4a) and a second axis support (4b); the first hinge part (1b) having an upper end surface (12) and a lower end surface (13) respectively located at opposite ends of the first hinge part (1b), wherein the first rotating part (3a) of the limiting structure (3) is arranged at the upper end surface (12), the first axis support (4a) of the axial displacement structure (4) is arranged at the lower end surface (13); the second hinge part (2b) has two inner end surfaces (22) respectively aligned with the upper and lower end surfaces (12, 13), the second rotating part (3b) being disposed on one of the inner end surfaces (22) and axially facing the first rotating part (3a), the second axle support (4b) being disposed on the other inner end surface (22) such that the second axle support (4b) axially abuts the first axle support (4a); and the first and second axle supports (4b) being rotatable relative to each other in the rotational direction, whereby the first and second axle supports (4a, 4b) perform an axial relative displacement.The hinge assembly of claim 6, wherein the first axle support (4a) has a guide end surface (42), the guide end surface (42) having an upper surface (421) and a lower surface (422), an axial step distance (H1) being formed between the upper and lower surfaces (421, 422); the second axle support (4b) having a guide end surface (45), the guide end surface (45) of the second axle support (4b) having an upper surface (451) and a lower surface (452), the axial step distance (H1) being formed between the upper and lower surfaces (451, 452) of the second axle support (4b).The hinge assembly of claim 7, wherein when the upper surface (421) of the first axle support (4a) and the lower surface (452) of the second axle support (4b) or the lower surface (422) of the first axle support (4a) and the upper surface (451) of the second axle support (4b) abut each other, the boundary structure (3) between the first rotating part (3a) and the second rotating part (3b) has an axial distance (H2), wherein the axial distance (H2) corresponds to the axial step distance (H1).The hinge assembly of claim 7, wherein a guide slope (423) connects the upper surface (421) of the first axle support (4a) to its lower surface (422), and a guide slope (453) connects the upper surface (451) of the second axle support (4b) to its lower surface (452).Hinge assembly according to claim 1, wherein a fairing (F) covers the first hinge part (1b), the fairing (F) having two openings (F1), which are respectively aligned axially with axis holes (11, 21) of the first and second hinge parts (1b, 2b).

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