Multi-axis door hinge system

Abstract

A multi-axis door hinge system for a container, the system comprising: a door, a door frame enclosing the container; a first hinge set comprising one or more hinges configured along a first hinge axis mounted to an outer side of the door frame or immediately adjacent thereto; a second hinge set comprising one or more hinges configured along a second hinge axis operably mounted to an inner side of the door such that the door is rotatable about the second hinge axis; wherein the second hinge set is operably coupled with the first hinge set such that the second hinge set is rotatable about the first hinge axis, thereby allowing lateral and rotational movement of the door relative to the door frame.

Description

Technical Field

[0001] This invention relates to a door device. More particularly, this invention relates to a sturdy door or security door device. Even more particularly, this invention relates to a wide swing range door device. Most particularly, this invention relates to a wide swing range sturdy door and door frame device. Background Technology

[0002] The following references and descriptions of existing solutions or products are not intended and should not be construed as statements or admissions of common knowledge in the art. In particular, the following discussion of prior art should not be considered as relating to common knowledge or common knowledge to those skilled in the art, but rather is intended to assist inventor(s) in the process of inventing the invention and to aid in understanding the invention.

[0003] Such robust door and door frame devices have been described, in which the door slides laterally to overlap with the door frame, thereby increasing resistance to forced entry by prying the door open. However, these security door and door frame devices have only been described with a swing radius of about 90°. In such devices, the entry route through the door frame is restricted because the door partially blocks the entrance when it swings open to its maximum extent, for example, 90°.

[0004] The applicant has determined that it would be advantageous to provide an improved security door device that attempts to at least partially improve one or more of the aforementioned disadvantages of the prior art, or to provide the public with a useful option. Summary of the Invention

[0005] According to one aspect of the invention, a multi-axis door hinge system for a container is provided, the system comprising: a door, a door frame for enclosing the container; a first hinge group including one or more hinges disposed along a first hinge axis and mounted to or adjacent to the outer side of the door frame; and a second hinge group including one or more hinges disposed along a second hinge axis and operably mounted on the inner side of the door, thereby enabling the door to rotate about the second hinge axis; wherein the second hinge group is operably coupled to the first hinge group, such that the second hinge group is rotatable about the first hinge axis, thereby allowing both lateral and rotational movement of the door relative to the door frame.

[0006] In some embodiments, the door is configured to have a range of motion greater than 180° between a closed position and a fully open position; in the closed position, the door engages the door frame.

[0007] In some embodiments, the first hinge group and the second hinge group are coupled by a connecting part that extends through the opening of the door.

[0008] In some embodiments, the second hinge group includes two hinges, and the hinges are coupled by an elongated hinge connecting member.

[0009] In some embodiments, the second hinge group and / or the hinge connection member are coupled to the door via a plate member.

[0010] In some embodiments, the multi-axis door hinge system further includes a locking mechanism that can be actuated to move one or more locking latches relative to the door frame.

[0011] In some embodiments, the locking mechanism includes a handle mounted on the outside of the door for actuating the locking latch.

[0012] In some embodiments, the locking mechanism includes an arm that connects the handle to the hinge connection member, such that actuation of the locking mechanism by the handle enables rotation of the door relative to the second hinge group.

[0013] According to another aspect of the invention, a safety container is provided, the safety container comprising a container frame defining an enclosed space having an opening, and a multi-axis door hinge system as described above for ensuring the safety of the opening.

[0014] This document also describes a door and door frame assembly comprising a door, a door frame, and a door hinge. The door hinge is adapted to connect the door to the door frame, whereby the door is hingedly attached to the door frame on a first side opposite to a second side of the door frame. The door frame defines a door frame region, and the inner edge of the door frame lies in a frame plane. The door frame region is a three-dimensional space within the door frame and is a door frame region covered space defined by at least three sides of the door frame. When viewed from a top height, the door frame region covered space has a generally shaped line or contour conforming to the front and rear portions of the door frame, wherein: The door is adapted to be laterally translated relative to the door frame through a plane substantially parallel to the plane of the frame; The door hinge includes at least a first hinge axis and a second hinge axis that are not on the same axis as each other; At least one of the first hinge axis and the second hinge axis is located outside the space covered by the door frame area and on a first side of the door frame; and The door is adapted to swing outward toward the open position and away from the second side of the door frame.

[0015] Preferably, the first side of the door is located outside the safety space protected by the door and door frame assembly, and the second side of the door is located inside the safety space.

[0016] Preferably, the door hinge is adapted to extend through the door, such that the door hinge includes components on the second side and the first side of the door.

[0017] Preferably, the door hinge is adapted to extend through a hole in the door.

[0018] Preferably, the door hinge is not directly fixed to the hole.

[0019] Preferably, the door hinge includes an upper hinge and a lower hinge.

[0020] Preferably, both the upper hinge and the lower hinge include a first hinge and a second hinge, wherein the first hinge and the second hinge respectively include a first hinge axis and a second hinge axis.

[0021] Preferably, the door is adapted to have a swing range of more than 170°.

[0022] Preferably, the door is adapted to swing between a position in the door frame region parallel to the frame plane and a position outside the door frame region parallel to the frame plane.

[0023] Preferably, the door is adapted to swing at least 180°.

[0024] This document also describes a door and door frame assembly comprising a door, a door frame, and a door hinge adapted to hingedly mount the door such that the door is supported on a first side of the door frame, the first side of the door frame being opposite a second side of the door frame. The door and door frame assembly has a door frame region in a three-dimensional spatial form, having a top, a bottom, a first side, a second side, and front and rear portions defined by the door frame. The door frame region, when viewed from a top height, has a door frame covered space, the door frame covered space having a generally shaped line or contour conforming to the front and rear portions. The door is adapted to laterally translate along a direction including a vector parallel to the front or rear portion and partially pass through the door frame region; the door hinge includes at least a first hinge axis and a second hinge axis that are not coaxial with each other; at least one of the first hinge axis and the second hinge axis is located outside the space covered by the door frame region and is located on or adjacent to a first side of the door frame; and the door is adapted to swing outward about the door hinge and toward an open position away from a second side of the door frame.

[0025] hinge A hinge system may include two or more hinge axes. Preferably, the hinge system includes two axes. A first hinge axis may be located on the outside of the door, and a second hinge axis may be located on the inside of the door. The outside of the door is outside a stable space, such as a secure, reinforced room or building. The inside of the door is inside the stable space.

[0026] A hinge system may include multiple hinges connected to each other in an aligned manner (such as parallel alignment) on either side of the door. Advantageously, positioning the hinges on or immediately adjacent to the outward-facing side of the door allows the door to rotate more than 90 degrees relative to the door frame and / or about the hinge axis between a fully closed position and a fully open position. In some embodiments, positioning the hinges on the outward-facing side of the door allows the door to rotate more than 135 degrees about the hinge axis. In other embodiments, positioning the hinges on the outward-facing side of the door allows the door to rotate more than 170 degrees about the hinge axis. In still other embodiments, positioning the hinges on the outward-facing side of the door allows the door to rotate more than 180 degrees about the hinge axis.

[0027] A hinge system may include two or more independent hinges that are not attached to each other except through a door or door frame. A hinge system may include a single hinge having multiple points of attachment to a door or door frame. A single hinge may include multiple separate and connected hinges. Preferably, the hinge includes an upper hinge and a lower hinge, each comprising a first hinge and a second hinge aligned along a first hinge axis and a second hinge axis, respectively. Preferably, a second hinge connects the upper hinge and the lower hinge via a connecting member, such as a rod.

[0028] The rod may include a housing or bearing that is fixed to the door.

[0029] The first hinge axis may be adapted to be located outside the stable space. The second hinge axis may be adapted to be located within the stable space when the door is in the closed position.

[0030] Hinges can be welded to, attached to by fasteners, or otherwise attached to doors and door frames.

[0031] Preferably, the external hinges and the internal hinges are adapted to extend or connect through slits, passages or cavities in the door.

[0032] Preferably, the hinge is adapted to move freely within a slit, passage, or cavity, rather than being attached to a slit, passage, or cavity of the door. Therefore, the slit, passage, or cavity of the door may be adapted to allow movement of one or both of the first or second hinges relative to the door.

[0033] Door Security doors and door frame devices can form part of a storage room, vault, safe, security container, toolbox, or similar container. Advantageously, the device can be part of or included within a gun safe.

[0034] When the door is in the closed position, it may be adapted to be substantially located within the door frame area. When the door is in the closed position, it may be adapted to be located inward from the door frame area such that the door frame area is at least partially outside the stable space. The door may be adapted to be located inside the door frame and overlap with the door frame.

[0035] Multi-axis hinges allow the door to move laterally relative to the door frame in a direction perpendicular to the hinge axis. This lateral movement allows the door to overlap the door frame on at least three sides. Preferably, all peripheral edges of the door are inside the door frame facing the stable space. The door is adaptable to swing outwards from the stable space to the outside of the stable space.

[0036] Locking mechanism The door and door frame assembly may also include a locking mechanism. The locking mechanism may be adapted to actuate a locking latch or other locking feature to lock the door to the door frame. The locking mechanism may also be adapted to actuate lateral movement of the door relative to the door frame. The locking mechanism may include a rotating mechanism. The rotating mechanism may engage with and be actuated by a handle of the locking mechanism. The handle of the locking mechanism may be located outside the stable space, such as on the outside of the door. The locking mechanism may also include an arm extending between the rotating mechanism and a connecting member of the hinge, such as a lever. The connecting member of the hinge may be aligned with a second hinge axis. The locking mechanism may be adapted to rotate the handle to actuate the arm and cause the second hinge axis to rotate about a first hinge axis, thereby enabling lateral movement of the door.

[0037] The arm may include at least two components connected by a pivot connection. Preferably, the arm includes a first component extending between a rotating mechanism and a second component. The first component may be attached to the rotating mechanism via an eccentric pivot connection. The second component may be attached to the first component via a second pivot connection. The second component may be fixed to the rod.

[0038] It should be understood that any features described herein can be used in any combination, and the description of the second aspect of the invention may have the specific features described in relation to the first aspect of the invention.

[0039] Although in the preferred embodiment of the invention, aspects of the security door device and hinge system will be described as being used in combination with each other, those skilled in the art will understand that some aspects of the invention are also suitable as standalone inventions that can be individually incorporated into a security door not described herein.

[0040] Throughout the specification and the appended claims, unless the context otherwise requires, the word “comprise” and variations such as “comprises” and “comprising” shall be understood to imply inclusion of the said whole, step, or group of wholes or groups of steps, but not to exclude any other whole, step, group of wholes or groups of steps.

[0041] When used in relation to a reference point of quality, grade, value, number, frequency, percentage, size, location, dimensions, quantity, weight, or length, the terms "about" or "approximately" can be understood to indicate that the reference point can vary, and the term can cover proximal characteristics on either side of the reference point. In some implementations, the term "approximately" can indicate that the reference point can vary by up to 30%.

[0042] As used herein, the word “substantially” may be used only to indicate that the term described by the word should not be taken too literally, and that for the purposes of the patentee, the word may mean “sufficiently,” “mainly,” or “almost sufficient.” Attached Figure Description

[0043] Other aspects of the invention and further embodiments of the aspects described in the foregoing paragraphs will become apparent from the following description. The invention will now be described by way of non-limiting example only, with reference to the accompanying drawings, in which: Figure 1 A front view of a safety / security container, showing a door and door hinge device according to a preferred embodiment of the invention, wherein the door is shown in the closed position; Figure 2 External view of the safety / safety container with the door partially open. Figure 1 A partial view of the upper portion of the hinge in the preferred embodiment shown. Figure 3 External view of the safety / safety container with the door partially open. Figure 1 A partial view of the lower portion of the hinge in the preferred embodiment shown; Figure 4 For observation from inside the safety / insurance container Figure 1 Rear view of the door and door hinge assembly shown; Figure 5 For observation from inside the container with the locking mechanism in the engaged / locked position. Figure 1 Rear view of the door and door hinge assembly shown; Figure 6 For when the door is in the unlocked position Figure 1 Front view of the door and door hinge assembly shown; Figure 7 A front-view perspective view of the container with the door shown in the unlocked position; Figure 8 This is a partial perspective view of the top part of the hinge mechanism; Figure 9 A top sectional view of a door and door hinge assembly that form part of a safety container, in the transition between the locked and unlocked positions of the door; Figure 10 A top sectional view of a door and door hinge assembly forming part of a safety container, with the door in the open position (swung to the open side), in which the outer surface of the door is opened more than 180 degrees relative to the door frame. 0 ; Figure 11 A top sectional view of the door and door hinge assembly of a safety container with the door retracted from the locked position; Figure 12 A top sectional view of a door and door hinge assembly that form part of a safety container, with the door near the locked position; Figure 13 A top sectional view of a door and door hinge assembly that form part of a safety container, with the door in the closed and locked position; Figure 14 A schematic front view representation of the 3D door frame region defined by the inner perimeter of the door frame surrounding the opening of the safety container; and Figure 15 This is a schematic representation of the top-view cross-section of the door frame area. Detailed Implementation

[0044] Preferred features of the invention will now be described with particular reference to the accompanying drawings. However, it should be understood that the features shown and described with reference to the drawings should not be construed as limiting the scope of the invention. In describing various embodiments of the invention, similar features will be referred to using similar reference numerals, wherein the reference numerals for each embodiment are typically preceded by 1, 2, 3, or followed by a Roman numeral sequence such as i, ii, iii, etc., or a letter sequence such as a, b, c, etc., relative to the corresponding feature of the first embodiment. For example, feature 10 of the first embodiment may be represented as 110, 210, 310 (or n10), or 10a, 10b, 10c (or 10x), or 10i, 10ii, 10iii (or 10r), etc., in the second, third, and fourth embodiments, respectively.

[0045] Figure 1A multi-axis door hinge system 1 for a secure container 5 (such as a safe) is shown. The multi-axis door hinge system 1 includes a door 20, a container frame defining a door frame 10, and a door hinge 30. The door hinge 30 is adapted to hinge the door 20 such that the door 20 is supported at a first side 11a of the door frame 10. In some embodiments, the first side 11a of the door frame 10 is substantially positioned opposite a second side 11b of the door frame 10. (Refer to...) Figure 14 It can be said that the door hinge device 1 has a door frame area 12, which is defined as a three-dimensional space between the surrounding peripheral sides of the door frame 10, the peripheral sides including a top 12c, a bottom 12d, a first side 12a, a second side 12b, a front portion 12e, and a rear portion 12f.

[0046] The multi-axis hinge 30 includes at least a first hinge axis 31i and a second hinge axis 31ii. In a preferred embodiment, the first hinge axis 31i and the second hinge axis 31ii are coaxial with each other. At least one of the first hinge axis 31i and the second hinge axis 31ii is located externally (e.g., outside the door frame 10) and is located on or adjacent to a first side 11a of the door frame 10. The door 20 is adapted to swing outward about the door hinge 30 and away from a second side 11b of the door frame 10 toward a fully open position (see [link to door hinge 30]). Figure 10 As will be described below, the multi-axis hinge 30 has a first hinge group and a second hinge group. The first hinge group includes at least one or more hinges 32ai, 32bi disposed along a first hinge axis 31i and mounted to or adjacent to the outward-facing side of the door frame 10. The second hinge group includes one or more hinges 32aii, 32bii disposed along a second hinge axis 31ii. The second hinge groups 32aii, 32bii are operatively mounted to the inside of the door 20 such that the door 20 is rotatable about the second hinge axis 31ii. In a preferred embodiment, the second hinge groups 32aii, 32bii are operatively coupled to the first hinge groups 32ai, 32bi such that the second hinge groups 32aii, 32bii are also rotatable about the first hinge axis 31i. This configuration allows the door 20 to move laterally relative to the door frame 10 (when the door is rotating about the second hinge axis 31ii) and to move a larger range of rotational movement (when the door 20 and the second hinge group 32aii, 32bii are rotating about the first hinge axis 31i).

[0047] Hinge 30 includes an upper hinge 32a and a lower hinge 32b. Each of the upper hinge 32a and lower hinge 32b includes a first hinge group 32ai, 32bi and a second hinge group 32aii, 32bii. The first hinge groups 32ai, 32bi are aligned with the first hinge axis 31i, and the second hinge groups 32aii, 32bii are aligned with the second hinge axis 31ii. The second hinge groups 32aii, 32bii are connected to each other by an elongated hinge connecting member 33 in the form of a rod 33. The hinge connecting member 33 extends through the second hinge axis 31i between the second hinge 32aii of the upper hinge 32a and the second hinge 32bii of the lower hinge 32b. The hinge connecting member 33 is accommodated in two plate members 33a, 33b located at the upper and lower ends of the hinge connecting member 33 and adjacent to the upper hinge 32a and lower hinge 32b, respectively. In some embodiments, the hinge connection member 33 forms part of the second hinge 32aii of the upper hinge 32a and the second hinge 32bii of the lower hinge 32b.

[0048] In a preferred embodiment, the upper hinge 32ai and the lower hinge 32bi are adapted to extend through holes 34a and 34b in the door 20 to connect with corresponding hinges 32aii and 32bii on the inside of the door 20. In some embodiments, the upper hinge 32a and the lower hinge 32b are not attached to or fixed to holes 34a and 34b, but a portion of each of the upper hinge 32a and the lower hinge 32b is adapted to move relative to holes 34a and 34b within holes 34a and 34b.

[0049] The first hinge assembly 32ai, 32bi is mounted to the outside of the door frame 10, thus the first hinge assembly 32ai, 32bi is located outside the container cavity. This allows the door 20 to pivot about the first hinge assembly 32ai, 32bi through the open arc 24 (see...). Figure 10 In some embodiments, door 20 can be opened more than 180 degrees between the closed position and the fully swing-open position. o In the closed position, door 20 contacts door frame 10. In the fully open position, the outer surface of door 20 swings outwards to be completely outside the door frame area 12. The wide swing range of door 20 provides improved clearance for entry into the stable space 2 through the door frame area 12.

[0050] Since hinge 30 is a multi-axis hinge, it is also adapted to allow the second hinge axis 31ii to rotate about the first hinge axis 31i. Therefore, door 20 is adapted to move laterally relative to door frame 10. (Refer again) Figure 13 Door 20 is adapted to be in an unlocked position where its far edge 52 does not overlap with the door frame 10 (e.g., Figure 12 (As shown) Move to the locking position where the far edge 52 of door 20 overlaps with the door frame 10 (as shown) Figure 9(As shown). Due to the mounting position of the hinge 30 relative to the door 20 and the door frame 10, the hinge edge 25 of the door 20 is adapted to overlap with the hinge side of the door frame 12a in both the locked and unlocked positions of the door 20. The door 20 is adapted to overlap with the door frame 10 on the inner (second side) 13a of the door frame 10 facing the stable space 2.

[0051] In a preferred embodiment, the door and door hinge assembly 1 further includes a locking mechanism 40. The locking mechanism 40 is adapted to lock the door 20 to the door frame 10 and to cause the door 20 to move relative to the door frame 10. The locking mechanism 40 includes a handle 42 mounted on the outside of the door 20. The handle 42 is connected to a rotating mechanism 46 on the inside of the door 20. The locking mechanism 40 also includes an arm 44 attached to the rotating mechanism 46 and the hinge connection member 33.

[0052] In one embodiment, arm 44 includes a first member 44a and a second member 44b. The first member 44a is attached to the rotating member 46 via an eccentric pivot connection 43. The second member 44b is attached to the first member 44a via a second pivot connection 45, and the other end of the second member 44b is fixed to the hinge connection member 33. The locking mechanism 40 is configured such that when the handle 42 is rotated, the locking latch 47 (schematically shown) engages. Figure 6 (In the middle) The door is locked to the door frame or door side panel 10. A device for a safe 5 is shown and described in document WO2017143385, in which the applicant exemplifies an effective locking latch device suitable for the present invention, the entire contents of which are incorporated herein by reference. Furthermore, when the handle 42 is rotated, the rotating member 46 rotates to push or pull the first member 44a away from or toward the hinge connecting member 33, thereby causing the second pivot connecting portion 45 to reciprocate and rotate about the second member 44b. Thus, longitudinal movement in a direction generally parallel to the longitudinal axis 44c of the first member of the arm 44 causes the hinge connecting member 33 to rotate, thereby causing the door 20 to move laterally relative to the door side panel 10 (door frame). The hinge connecting member 33 is fixed to the first and second hinges of the upper hinges 32ai / 32aii and the lower hinges 32bi / 32bii, and rotates with the plate members 33a, 33b.

[0053] In this specification, terms such as “equipment,” “method,” “apparatus,” and “component” may refer to a singular or plural item and are intended to refer to a set of attributes, functions, or characteristics performed by one or more items or components having one or more parts. It is contemplated that when “equipment,” “method,” “apparatus,” or “component,” or similar terms are described as a single object, a functionally equivalent object having multiple components is considered to fall within the scope of that term. Similarly, when “equipment,” “component,” “method,” “apparatus,” or “component” is described as having multiple components, a functionally equivalent but single object is also considered to fall within the scope of that term, unless explicitly stated to the contrary or required by the context. In this specification, the phrase “and / or” refers to these features individually or in any combination thereof. For example, the phrase “feature 1, feature 2, and / or feature 3” includes, within its scope, any combination of: feature 1 or feature 2 or feature 3; feature 1 and feature 2 or feature 3; feature 1 or feature 2 and feature 3; feature 1 and feature 3 or feature 2; feature 1, feature 2, and feature 3.

[0054] The directional terms used in the specification and claims, such as vertical, horizontal, top, bottom, upper and lower, shall be interpreted as relevant and based on the premise that a component, item, article, device, apparatus or instrument is generally considered to be in a particular orientation, usually with the top side at the top.

[0055] It should be understood that the invention disclosed and defined herein extends to all alternative combinations of two or more individual features mentioned or apparent from the text or drawings. All these different combinations constitute various alternative aspects of the invention.

[0056] While various embodiments of the invention have been described above, it should be understood that they are presented by way of example only and not by way of limitation. It will be apparent to those skilled in the art that various changes in form and detail may be made without departing from the spirit and scope of the invention. Therefore, the invention should not be limited to any of the exemplary embodiments described above.

[0057] Figure Labels 1. Door hinge system 2. Stabilize the space 5. Container 10. Door frame 11a. The first side of the door frame 11b, the second side of the door frame 12. Door frame area Door frame: 12a, first side; 12b, second side; 12c, top; 12d, bottom; 12e, front; 12f, rear area 13a. (Inner edge of the door frame) 20. Door 24. (Door) swing process 25. (Door) Hinged edge 30. Door hinges / hinges / multi-axis hinges 31i, First hinge axis 31ii, Second hinge axis 32ai, 32bi, First hinge group 32aii, 32bii, Second hinge group 32a. Upper hinge 32b. Lower hinge 32ai, (the first hinge of the upper hinge) 32aii, (the second hinge of the upper hinge) 32bi, (lower hinge) first hinge 32bii, (the second hinge of the lower hinge) 33. Hinge connecting component (rod) 33a, 33b, two plate components 34a, 34b, Holes in the door 35a, 35b, and a portion of the upper and lower hinges 40. Locking mechanism 42. Handle 43. Eccentric pivot connection 44. Arm 44a, (of the arm) the first component 44b, (of the arm) the second component 44c, the longitudinal axis of the first component 45. Second pivot connection 46. ​​Rotating component 47. Locking latch

Claims

1. A multi-axis door hinge system for a container, the system comprising: A door, a door frame used to enclose the container; The first hinge group includes one or more hinges arranged along the first hinge axis and mounted to the outside of the door frame; The second hinge assembly includes one or more hinges arranged along the second hinge axis and operably mounted on the inside of the door, enabling the door to rotate about the second hinge axis. The second hinge group is operatively coupled to the first hinge group, such that the second hinge group can rotate about the first hinge axis, thereby allowing the door to move laterally and rotate relative to the door frame. The door is configured to have a range of motion greater than 180° between a closed position and a fully open position; in the closed position, the door engages the door frame.

2. The multi-axis door hinge system of claim 1, wherein the first hinge group and the second hinge group are coupled by a connecting part extending through an opening of the door.

3. The multi-axis door hinge system according to any one of the preceding claims, wherein the second hinge group comprises two hinges, and wherein the hinges are coupled by an elongated hinge connecting member.

4. The multi-axis door hinge system according to claim 3, wherein the second hinge group and / or the hinge connecting member are coupled to the door via a plate member.

5. The multi-axis door hinge system of claim 3 further includes a locking mechanism, the locking mechanism being actuated to move one or more locking latches relative to the door frame.

6. The multi-axis door hinge system of claim 5, wherein the locking mechanism includes a handle mounted on the outside of the door for actuating the locking latch.

7. The multi-axis door hinge system of claim 6, wherein the locking mechanism includes an arm that connects the handle to the hinge connection member such that actuation of the locking mechanism by the handle enables rotation of the door relative to the second hinge group.

8. A safety container comprising a container frame defining an enclosed space having an opening, and a multi-axis door hinge system as claimed in any one of claims 1 to 7 for ensuring the safety of the opening.

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