Carrying case and its dual axis hinge

Abstract

The application provides a carrying case and a double-shaft hinge thereof. The double-shaft hinge is used for connecting a frame body and a door body of the carrying case, and comprises a hinge seat, two mounting seats fixedly connected with the frame body and the door body respectively, and a first hinge shaft and a second hinge shaft connecting the two mounting seats with the hinge seat respectively. The outer periphery of the hinge seat does not exceed the outer sides of the frame body and the door body. The first hinge shaft and the second hinge shaft are arranged at intervals on the hinge seat, and the axes of the first hinge shaft and the second hinge shaft both extend vertically. The first hinge shaft realizes the hinged connection between the door body and the hinge seat through the first hinge hole, and the second hinge shaft realizes the hinged connection between the frame body and the hinge seat through the second hinge hole. The hinge seat comprises two first protrusions and two second protrusions. The two first protrusions are arranged at intervals outside the first hinge hole and are used for abutting against the door body, so that the door body and the hinge seat are opened and closed by 90 degrees. The two second protrusions are arranged at intervals outside the second hinge hole and are used for abutting against the frame body, so that the frame body and the hinge seat are opened and closed by 180 degrees.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cargo transport devices, in particular to a carrying box and a double-shaft hinge thereof. BACKGROUND

[0002] At present, the folding door of the frame body in the right angle style requires an opening and closing angle in the range of 0°-270°, and the commonly used hinge structure in the design is single-shaft hinge and double-shaft hinge. The single-shaft hinge in the existing structure design requires that the single-shaft rotation center is located outside the frame body, and when applied to the frame body, the whole protrudes outward from the frame body, so as to realize the large opening and closing angle of 270°. However, in some application occasions, the outside of the frame body is required to be flat without protruding structure, and at this time, the single-shaft hinge is not applicable. The ordinary double-shaft hinge is designed as a combination type of stamping part and welded part, and although the function can realize the large opening and closing, some parts still protrude outward from the frame body. SUMMARY

[0003] The purpose of the present application is to provide a carrying box and a double-shaft hinge thereof, which can realize the large opening and closing of the door body relative to the frame body, and the double-shaft hinge is flat in appearance, so that the carrying box has no protruding structure.

[0004] To solve the above technical problems, the present application adopts the following technical scheme:

[0005] According to one aspect of the present application, the present application provides a double-shaft hinge for connecting a frame body and a door body of a carrying box, the double-shaft hinge comprising a hinge seat, two mounting seats respectively connected with the frame body and the door body, and a first hinge shaft and a second hinge shaft connecting the two mounting seats with the hinge seat respectively;

[0006] The outer periphery of the hinge seat does not exceed the outside of the frame body and the door body. First and second hinge holes are provided on the hinge seat in a spaced manner, the axis of the first and second hinge holes both extend vertically, the first hinge shaft realizes the hinged connection between the door body and the hinge seat through the first hinge hole, and the second hinge shaft realizes the hinged connection between the frame body and the hinge seat through the second hinge hole.

[0007] The hinge seat comprises two first protrusions and two second protrusions, the two first protrusions are arranged outside the first hinge hole in a spaced manner, used for abutting against the door body, realizing the 90-degree opening and closing between the door body and the hinge seat, and the two second protrusions are arranged outside the second hinge hole in a spaced manner, used for abutting against the frame body, realizing the 180-degree opening and closing between the frame body and the hinge seat.

[0008] In some embodiments, the hinge seat comprises a body, two first protrusions arranged on the circumference of the body and protruding outward, and two second protrusions arranged on the circumference of the body and protruding outward, the axis of the first hinge hole and the axis of the second hinge hole are located on a straight line extending along the length direction of the body;

[0009] The two second protrusions are arranged on the two sides of the second hinge hole in the width direction of the body, and the plane passing through the ends of the two second protrusions away from the first hinge hole passes through the axis of the second hinge hole;

[0010] The two first protrusions are arranged outside the first hinge hole, the two first protrusions are a first outer protrusion and a first inner protrusion respectively, the first outer protrusion is located at the end of the width direction of the body, and the first inner protrusion is located at the end of the length direction of the body; the end of the first outer protrusion close to the first inner protrusion extends along the width direction of the body along the line connecting the axis of the first hinge hole, and the end of the first inner protrusion close to the first outer protrusion extends along the length direction of the body along the line connecting the axis of the first hinge hole.

[0011] In some embodiments, the body comprises a square part, a first semicircular part and a second semicircular part arranged at the two ends of the length direction of the square part;

[0012] The two second protrusions are respectively located at the two ends of the second semicircular part in the width direction of the body, and the two second protrusions are respectively inclined outward from the end of the second semicircular part towards the first semicircular part.

[0013] In some embodiments, the first inner protrusion is inclined outward from the center of the first semicircular part away from the first outer protrusion, the first outer protrusion is inclined outward from one end of the first semicircular part away from the first semicircular part, and the first outer protrusion and the second protrusion away from the first outer protrusion are centrosymmetric about the center point of the line connecting the axis of the first hinge hole and the axis of the second hinge hole.

[0014] In some embodiments, the two mounting seats comprise a first mounting seat and a second mounting seat, the first mounting seat is fixedly connected with the door body, and the second mounting seat is fixedly connected with the frame body;

[0015] The first hinge shaft is arranged through the first hinge hole and the first mounting seat, the first hinge shaft is fixedly connected with the hinge seat, and the first hinge shaft is rotatably connected with the first mounting seat;

[0016] The second hinge shaft is arranged in the second hinge hole and the second mounting base, and the second hinge shaft is rotatably connected with the hinge base and fixedly connected with the second hinge base.

[0017] In some embodiments, the hinge base is fixedly connected with the first hinge shaft by a fastener;

[0018] A connecting hole is arranged on the hinge base and extends along a horizontal axis, and the connecting hole is communicated with the first hinge hole, and a through hole is arranged on the first hinge shaft, and the fastener is arranged in the connecting hole and the through hole.

[0019] In some embodiments, the first mounting base comprises two first mounting blocks arranged vertically and spaced apart, and the two first mounting blocks are arranged at the upper and lower ends of the hinge base, and a first mounting hole is arranged on each first mounting block, and the first hinge shaft is arranged in each first mounting hole and the first hinge hole;

[0020] The second mounting base comprises two second mounting blocks arranged vertically and spaced apart, and the two second mounting blocks are arranged at the upper and lower ends of the hinge base, and a second mounting hole is arranged on each second mounting block, and the second hinge shaft is arranged in each second mounting hole and the second hinge hole.

[0021] The application also provides a carrying case comprising a frame, a door and a double-shaft hinge according to any one of the above embodiments, and each door is rotatably connected with the frame by at least two double-shaft hinges.

[0022] In some embodiments, one side of the frame has an opening, and each door is rotatably connected to the opening of the frame;

[0023] At least two double-shaft hinges are arranged vertically between the frame and the door, and the first hinge shafts of at least two double-shaft hinges in the same vertical direction are connected coaxially.

[0024] In some embodiments, the first hinge shafts of at least two double-shaft hinges in the same vertical direction are integrally formed into a connecting hinge shaft, and the connecting hinge shaft is connected with at least two hinge bases and at least two first mounting bases;

[0025] At least one limiting hole is arranged on the connecting hinge shaft.

[0026] The carrying case further comprises a limiting member corresponding to the limiting hole, and the limiting member is arranged in the limiting hole to limit the vertical position of the connecting hinge shaft.

[0027] In some embodiments, the frame and the door have a space therebetween, the double-axis hinge is arranged at the space, and along the length direction of the carrying case, the outer side of the double-axis hinge does not exceed the outer side of the frame; along the width direction of the carrying case, the outer side of the double-axis hinge does not exceed the outer side of the door.

[0028] From the above technical solutions, the present application has at least the following advantages and positive effects:

[0029] In the present application, the double-axis hinge is used to connect the frame and the door of the carrying case, which comprises a hinge seat, two mounting seats fixedly connected with the frame and the door respectively, and a first hinge shaft and a second hinge shaft connecting the two mounting seats with the hinge seat respectively. The outer periphery of the hinge seat does not exceed the outer side of the frame and the door. The first hinge hole and the second hinge hole are arranged at intervals on the hinge seat, and the axis of the first hinge hole and the second hinge hole extends vertically. The first hinge shaft realizes the hinged connection between the door and the hinge seat through the first hinge hole, and the second hinge shaft realizes the hinged connection between the frame and the hinge seat through the second hinge hole. The hinge seat comprises two first protrusions and two second protrusions, the two first protrusions are arranged at intervals outside the first hinge hole and used to abut against the door to realize the 90-degree opening and closing between the door and the hinge seat, and the two second protrusions are arranged at intervals outside the second hinge hole and used to abut against the frame to realize the 180-degree opening and closing between the frame and the hinge seat. When the above-mentioned double-axis hinge is installed between the door and the frame, it can realize the large-angle opening and closing of the door relative to the frame within 0-270 degrees, and the outer periphery of the double-axis hinge does not exceed the outer side of the frame and the door, so that the outer side of the entire carrying case is flat without protruding structure. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is a structural schematic diagram of the carrying case in the present embodiment;

[0031] Figure 2 is a schematic diagram of the folding state of the carrying case in the present embodiment;

[0032] Figure 3 is a top view of the carrying case in the present embodiment when the door is opened within a range less than 90 degrees;

[0033] Figure 4 is a top view of the carrying case in the present embodiment when the door is opened to 90 degrees;

[0034] Figure 5 is a top view of the carrying case in the present embodiment when the door is opened to 270 degrees;

[0035] Figure 6 is a structural schematic diagram of the double-axis hinge in the present embodiment;

[0036] Figure 7 is Figure 1 is an enlarged structural schematic diagram of position A in the present embodiment

[0037] Figure 8 is Figure 5 enlarged structural view of B in FIG. 1;

[0038] Figure 9 is a structural schematic view of the hinge seat in this embodiment;

[0039] Figure 10 is a top view of the hinge seat in this embodiment;

[0040] Figure 11 is Figure 3 enlarged structural view of C in FIG. 1;

[0041] Figure 12 is Figure 4 enlarged structural view of D in FIG. 1;

[0042] Figure 13 is Figure 5 enlarged structural view of E in FIG. 1;

[0043] Figure 14 is a structural schematic view of the connecting hinge shaft in this embodiment.

[0044] The reference signs are explained as follows:

[0045] 11, bottom frame; 111, bottom bracket; 112, bottom plate; 1121, connecting portion; 1122, folding portion; 12, side frame; 13, end frame; 131, fixed portion; 132, rotating portion;

[0046] 2, door body;

[0047] 3, double shaft hinge; 31, hinge seat; 311, body; 3111, first hinge hole; 3112, second hinge hole; 3113, square portion; 3114, first semicircular portion; 3115, second semicircular portion; 312, first outer protrusion; 313, first inner protrusion; 314, second outer protrusion; 315, second inner protrusion; 316, third outer protrusion; 317, third inner protrusion; 318, connecting hole; 321, first mounting block; 331, second mounting block; 34, first hinge shaft; 35, second hinge shaft; 36, fastener;

[0048] 41, rotating member; 42, connecting member;

[0049] 5, universal wheel;

[0050] 6, connecting hinge shaft; 61, threaded hole; 62, limiting hole;

[0051] 7, limiting member. DETAILED DESCRIPTION

[0052] The exemplary embodiments embodying the features and advantages of the present application will be described in detail hereinafter. It should be understood, however, that the application can be practiced in various ways and that the description and drawings are to be regarded as illustrative in nature and not as restrictive.

[0053] In the description of the present application, it should be understood that the indication of direction or positional relationship (such as up, down, left, right, front and back, etc.) in the embodiments shown in the drawings is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation. These descriptions are appropriate when the elements are in the positions shown in the drawings. If the positions of these elements change, the indications of direction will also change accordingly.

[0054] In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implying the number of technical features indicated. Therefore, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0055] The specific embodiments of the carrying case and its double-axis hinge will be described in detail below in conjunction with the accompanying drawings.

[0056] Figure 1 The structure of the carrying case in the present embodiment is shown in the figure.

[0057] Reference Figure 1 The present embodiment provides a carrying case, which is hollow inside to form a containing space for containing goods.

[0058] The carrying case includes a frame, two door bodies 2 and a plurality of double-axis hinges 3. The door bodies 2 and the frame are rotatably connected by at least two double-axis hinges 3, mainly for realizing the rotation of the door bodies 2 relative to the frame within a range of 0-270°. When the double-axis hinge 3 is installed between the door body 2 and the frame, its outer periphery does not exceed the outer side of the frame and the door body 2, so that the entire outer periphery of the carrying case is flat without protruding structures.

[0059] For the convenience of description, it is defined that the length direction of the carrying case is the longitudinal direction, and the width direction of the carrying case is the transverse direction. It is also defined that the direction towards the containing space is the inner direction, and the opposite direction is the outer direction.

[0060] One side of the frame has an opening to communicate the inside with the outside, serving as a loading and unloading port for the goods, and facilitating the loading and unloading of the goods.

[0061] The frame body comprises a bottom frame 11, side frames 12 arranged on the bottom frame 11, end frames 13 arranged at two ends of the side frames 12, and a top plate arranged on top of the side frames 12. The side frames 12 are fixed to the bottom frame 11 and extend in the longitudinal direction. The end frames 13 are arranged at two ends of the side frames 12 in the longitudinal direction.

[0062] Figure 2 A schematic view of the folding state of the carrying box in the embodiment.

[0063] Reference Figure 1 and Figure 2 The bottom frame 11 comprises a bottom support 111 and a bottom plate 112. The bottom support 111 comprises a plurality of longitudinal beams extending in the longitudinal direction and two transverse beams connected to the longitudinal beams at two ends in the longitudinal direction. The bottom support 111 is in the shape of a trapezoid, and the length of the bottom support 111 in the longitudinal direction gradually decreases away from the side frames 12.

[0064] The bottom plate 112 is arranged on top of the bottom support 111, and the top of the bottom plate 112 extends horizontally. The bottom plate 112 comprises a connecting portion 1121 and a folding portion 1122 arranged in sequence in the transverse direction. The connecting portion 1121 is arranged on the side of the bottom support 111 close to the side frames 12, and the connecting portion 1121 is fixedly connected to the bottom support 111.

[0065] The end of the folding portion 1122 close to the connecting portion 1121 is rotatably connected to the bottom support 111, and can rotate relative to the bottom support 111 to lay the folding portion 1122 on the bottom support 111 or stand the folding portion 1122 on the bottom support 111, so as to realize the opening and folding of the bottom plate 112. In the embodiment, the folding portion 1122 is rotatably connected to the bottom support 111 through a rotating piece 41. Specifically, the rotating piece 41 comprises a fixed seat, a fixed plate, and a rotating shaft. The fixed seat is arranged on the outside of the bottom support 111 in the longitudinal direction and below the connecting portion 1121, and protrudes out of the outside of the connecting portion 1121 in the longitudinal direction. The fixed seat is in the shape of a U, and has an opening on the side away from the side frames 12 to form a groove, and the groove penetrates through the fixed seat from top to bottom. First openings are arranged at two ends of the fixed seat in the longitudinal direction, and the axes of the two openings are on the same line. The fixed plate protrudes out of the end of the folding portion 1122 close to the fixed portion 131 in the width direction of the folding portion 1122, and a second opening is arranged on the fixed plate. The rotating shaft is inserted into the two first openings and the second opening at the same time, and at this time, the fixed plate is in the groove.

[0066] Further, a plurality of reinforcing beams are arranged in the transverse direction at the bottom of the bottom plate 112 to strengthen the strength of the bottom plate 112 and enhance the ability of the bottom plate 112 to bear the weight of goods.

[0067] The end frames 13 are arranged at two ends of the side frames 12 in the longitudinal direction. Each end frame 13 comprises a fixed portion 131 and a rotating portion 132 arranged in the transverse direction. The fixed portion 131 is fixedly connected to the side frame 12, and the rotating portion 132 is rotatably connected to the fixed portion 131.

[0068] In the embodiment, the fixed part 131 and the rotating part 132 are rotatably connected by at least two connecting members 42, and the at least two connecting members 42 are vertically spaced between the fixed part 131 and the rotating part 132, so that each rotating part 132 can rotate inward relative to the fixed part 131 to fold the end frame 13, or rotate outward relative to the fixed part 131 to unfold the end frame 13.

[0069] Specifically, each connecting member 42 includes two first connecting seats, a second connecting seat, and a connecting shaft. The two first connecting seats are vertically spaced on the fixed part 131, and each first connecting seat is provided with a first through hole with a vertical axis. The second connecting seat is provided on the rotating part 132, and the second connecting seat is provided with a second through hole with a vertical axis. The connecting shaft can be simultaneously arranged in the two first through holes and the second through hole, and at this time, the second connecting seat is located at the interval between the two first connecting seats.

[0070] In other embodiments, the two first connecting seats can be provided on the rotating part 132, and the second connecting seat can be provided on the fixed part 131.

[0071] In the embodiment, the outer periphery of the rotating part 132 is formed by bending a circular steel pipe.

[0072] The top plate is rotatably connected to the top of the side frame 12, and can rotate relative to the side frame 12 to extend horizontally or vertically to unfold or fold the top plate. When the top plate is rotated to extend horizontally, the end thereof away from the side frame 12 can be lapped on the top of the door body 2; when the top plate is rotated to extend vertically, it is lapped on the inner side of the side frame 12.

[0073] In the embodiment, the top plate and the side frame 12 are rotatably connected by at least two rotating members, and the at least two rotating members are longitudinally spaced between the side frame 12 and the top plate, so that the top plate can rotate downward relative to the side frame 12 to fold the top plate, or the top plate can rotate upward relative to the side frame 12 to unfold the top plate. The structure of the rotating member is the same as that of the connecting member 42.

[0074] Further, the bottom of the frame body is provided with a plurality of universal wheels 5 for moving the carrying box. Specifically, the number of universal wheels 5 is four, and the four universal wheels 5 are respectively arranged at the bottom of the four corner portions of the bottom frame 11.

[0075] Figure 3 The top view of the carrying box in the embodiment when the door body 2 is opened within a range of less than 90 degrees, Figure 4 The top view of the carrying box in the embodiment when the door body 2 is opened to 90 degrees, Figure 5 The top view of the carrying box in the embodiment when the door body 2 is opened to 270 degrees.

[0076] Referring to Figure 1 , Figure 3 , Figure 4 and Figure 5 , two door bodies 2 are arranged at the openings to close the openings or open the openings of the frame. Each door body 2 is rotatably connected to the opening of the frame to realize the opening and closing of the opening of the frame, so as to facilitate the loading and unloading of goods and the storage of goods. Specifically, each door body 2 is respectively connected to the end of each end frame 13, and when the two door bodies 2 are closed, the sum of the longitudinal dimensions of the two door bodies 2 matches the longitudinal dimension of the side frame 12.

[0077] In the embodiment, the top and the longitudinal outer side of the outer periphery of each door body 2 are bent to form a circular steel pipe.

[0078] In the embodiment, there is a gap between the door body 2 and the frame, and at least two double-axis hinges 3 are vertically arranged at the gap between the frame and the door body 2 to realize the rotatable connection between the door body 2 and the frame, so that the door body 2 can rotate 0-270° relative to the frame. In addition, in the length direction of the carrying box, the outer side of the double-axis hinge 3 does not exceed the outer side of the frame; in the width direction of the carrying box, the outer side of the double-axis hinge 3 does not exceed the outer side of the door body 2, so that the outer side of the carrying box is flat without protrusion.

[0079] Specifically, there is a gap between the door body 2 and the end frame 13, and at least two double-axis hinges 3 are vertically arranged at the gap between the end frame 13 and the door body 2 to realize the rotatable connection between the door body 2 and the end frame 13, so that the door body 2 can rotate 0-270° relative to the end frame 13.

[0080] In the embodiment, two double-axis hinges 3 are vertically arranged between the door body 2 and the end frame 13. In other embodiments, three, four or other numbers of double-axis hinges 3 are vertically arranged between the door body 2 and the end frame 13, and the specific arrangement is determined according to the needs.

[0081] Figure 6 is a structural schematic view of the double-axis hinge 3 in the embodiment, Figure 7 is Figure 1 an enlarged structural schematic view of A in

[0082] Referring to Figure 6 and Figure 7 , each double-axis hinge 3 includes a hinge seat 31, a mounting seat connected to the frame and the door body 2 respectively, and a first hinge shaft 34 and a second hinge shaft 35 connecting the two mounting seats to the hinge seat 31 respectively. That is to say, the hinge seat 31 is hinged to the door body 2 through the first hinge shaft 34 and a mounting seat, and the hinge seat 31 is hinged to the frame through the second hinge shaft 35 and a mounting seat.

[0083] Figure 8 isFigure 5 Amplification structure diagram of the hinge seat 31.

[0084] Reference Figure 8 In the present embodiment, the outer periphery of the installed hinge seat 31 does not exceed the outer side of the frame body or the door body 2. Specifically, when the carrying case is in the closed state, in the longitudinal direction, the outer side of the hinge seat 31 does not exceed the outer side of the frame body (end frame 13); in the transverse direction, the outer side of the hinge seat 31 does not exceed the outer side of the door body 2. When one of the door bodies 2 is rotated 270 degrees relative to the frame body to be attached to the longitudinal outer side of the frame body (end frame 13), and the other door body 2 is closed relative to the frame body, in the longitudinal direction, the outer side of the hinge seat 31 does not exceed the outer side of the door body 2 connected thereto; in the transverse direction, the outer side of the hinge seat 31 does not exceed the outer side of the door body 2 away from the hinge seat 31.

[0085] Figure 9 The structure diagram of the hinge seat 31 in the present embodiment, Figure 10 The top view of the hinge seat 31 in the present embodiment.

[0086] Reference Figure 9 And Figure 10 The first hinge hole 3111 and the second hinge hole 3112 are spaced apart on the hinge seat 31, and the axes of the first hinge hole 3111 and the second hinge hole 3112 both extend in the vertical direction. Moreover, when the door body 2 is in the closed state, the axes of the first hinge hole 3111 and the second hinge hole 3112 are located on a straight line extending in the longitudinal direction.

[0087] The hinge seat 31 includes a body 311, two first protrusions, and two second protrusions. The two first protrusions are arranged on the body 311, and the two second protrusions are arranged on the outer periphery of the body 311 and protrude outward. The first hinge hole 3111 and the second hinge hole 3112 are located on the body 311. Moreover, in the present embodiment, the hinge seat 31 is integrally formed, and the surface is galvanized to improve the corrosion resistance of the hinge seat 31.

[0088] The body 311 includes a square portion 3113, a first semicircular portion 3114 and a second semicircular portion 3115 arranged on both ends of the square portion 3113 in the length direction. The arc surfaces of the first semicircular portion 3114 and the second semicircular portion 3115 are located on the outside of the square portion 3113 in the length direction. Moreover, in the same horizontal cross section, the center of the circle on which the cross section of the first semicircular portion 3114 is located coincides with the center of the circle on which the cross section of the first hinge hole 3111 is located, and the center of the circle on which the cross section of the second semicircular portion 3115 is located coincides with the center of the circle on which the cross section of the second hinge hole 3112 is located.

[0089] The two first protrusions are arranged outside the first hinge hole 3111 and are used to abut against the door body 2 to achieve a 90-degree opening and closing between the door body 2 and the hinge seat 31.

[0090] Figure 11 For Figure 3 An enlarged structural view at C, Figure 12 For Figure 4 An enlarged structural view at D, Figure 13 For Figure 5 An enlarged structural view at E.

[0091] In combination Figures 9 to 13 In the present embodiment, the two first protrusions are a first outer protrusion 312 and a first inner protrusion 313. Specifically, the first outer protrusion 312 is located at the end of the body 311 in the width direction, and the first inner protrusion 313 is located at the end of the body 311 in the length direction. When the door body 2 is closed at the opening of the frame body, the first outer protrusion 312 is located at the outer side of the body 311 in the transverse direction, and the first inner protrusion 313 is located at the inner side of the body 311 in the transverse direction.

[0092] In the present embodiment, the end of the first outer protrusion 312 close to the first inner protrusion 313 extends along the width direction of the body 311 along the axis line of the first hinge hole 3111, and the end of the first inner protrusion 313 close to the first outer protrusion 312 extends along the length direction of the body 311 along the axis line of the first hinge hole 3111.

[0093] Specifically, in the present embodiment, a first arc surface with a central angle of 90 degrees is provided between the two first protrusions, and the two first protrusions are arranged on both sides of the width direction of the first arc surface. The line between the two ends of the first arc surface and the central angle of the first arc surface extends along the width direction and the length direction of the body 311, respectively, that is, the first arc surface is part of the first semicircular portion 3114 arc surface, and when the door body 2 is closed with the frame body, the first arc surface is located at the outer side in the transverse direction. When the door body 2 is rotated relative to the frame body at an angle of 0-90 degrees, the longitudinal end of the door body 2 abuts against it and rotates along the first arc surface, thereby ensuring the stability of the rotation of the door body 2.

[0094] The first inner protrusion 313 is inclined outward from the center of the first semicircular portion 3114 away from the first outer protrusion 312. When the door body 2 is closed at the opening of the frame body, the first inner protrusion 313 is inclined toward the side frame 12 from the center of the first semicircular portion 3114 away from the first outer protrusion 312, and the longitudinal end of the door body 2 abuts against the first inner protrusion 313, thereby limiting the inward rotation of the door body 2 relative to the end frame 13.

[0095] The first outer protrusion 312 is inclined outward from one end of the first semicircular portion 3114 away from the first semicircular portion 3114, and is used to limit the 90-degree opening and closing of the door body 2 relative to the frame body. That is, when the door body 2 is rotated outward relative to the end frame 13 by 90 degrees, the longitudinal end of the door body 2 can abut against the first outer protrusion 312, and the first outer protrusion 312 limits the continuous outward rotation of the door body 2 relative to the end frame 13.

[0096] Two second protrusions are arranged outside the second hinge hole 3112, and are used to abut against the frame body to achieve 180-degree opening and closing between the frame body and the hinge seat 31. Specifically, the two second protrusions are located on both sides of the second hinge hole 3112 in the width direction of the body 311.

[0097] The two second protrusions are respectively located at both ends of the second semicircular portion 3115 in the width direction of the body 311, and the end portions of the two second protrusions away from the plane of the first hinge hole 3111 are located on the axis of the second hinge hole 3112. Specifically, a second arc surface with a central angle of 180 degrees is arranged between the two second protrusions, and the second arc surface referred to here is the arc surface of the second semicircular portion 3115. When the hinge seat 31 rotates relative to the frame body within 0-180 degrees, the transverse end portion of the frame body abuts against it, and the second arc surface rotates along the transverse end portion of the frame body to ensure the stability of the rotation of the hinge seat 31, thereby improving the stability of the rotation of the door body 2.

[0098] The two second protrusions are respectively inclined outward from the end portions of the second semicircular portion 3115 toward the first semicircular portion 3114.

[0099] The two second protrusions are respectively a second outer protrusion 314 and a second inner protrusion 315. Specifically, when the door body 2 is closed at the opening of the frame body, the second outer protrusion 314 is located on the outer side of the body 311 in the transverse direction, and the second inner protrusion 315 is located on the inner side of the body 311 in the transverse direction, so as to limit the inward rotation of the hinge seat 31.

[0100] When the door body 2 rotates relative to the end frame 13 within 0-90 degrees, the second inner protrusion 315 abuts against the transverse end portion of the end frame 13. When the door body 2 continues to rotate outward relative to the end frame 13 to fit on the longitudinal outer side of the end frame 13, the second outer protrusion 314 abuts against the transverse end portion of the frame body, so as to prevent the door body 2 from continuing to rotate toward the frame body, and prevent the frame body from colliding with the door body 2. That is to say, when the door body 2 rotates relative to the end frame 13 within 90-270 degrees, the hinge seat 31 rotates with the door body 2 within 0-180 degrees, and the rotation of the door body 2 within 0-180 degrees is limited.

[0101] In this embodiment, the first outer protrusion 312 and the second protrusion away from the first outer protrusion 312 are centrally symmetric about the center point of the line connecting the axis of the first hinge hole 3111 and the axis of the second hinge hole 3112. That is to say, the second outer protrusion 314 and the first outer protrusion 312 are centrally symmetric about the center point of the line connecting the axis of the first hinge hole 3111 and the axis of the second hinge hole 3112.

[0102] In the embodiment, the third outer protrusion 316 is arranged between the first outer protrusion 312 and the second outer protrusion 314 to transitionally connect the first outer protrusion 312 and the second outer protrusion 314. Moreover, the first outer protrusion 312, the second outer protrusion 314 and the third outer protrusion 316 are integrally formed with the body 311. Meanwhile, when the door body 2 is closed at the opening of the frame body, the outer side of the third outer protrusion 316 does not exceed the outer side of the door body 2 in the transverse direction.

[0103] The third inner protrusion 317 is arranged between the first inner protrusion 313 and the second inner protrusion 315 to transitionally connect the first inner protrusion 313 and the second inner protrusion 315. Moreover, the first inner protrusion 313, the second inner protrusion 315 and the third inner protrusion 317 are integrally formed with the body 311. When one of the door bodies 2 is rotated by 270 degrees relative to the frame body to abut the longitudinal outer side of the end frame 13 and the other door body 2 is closed relative to the frame body, the outer side of the third inner protrusion 317 does not exceed the outer side of the door body 2 away from the hinge seat 31 in the transverse direction, and does not exceed the outer side of the door body 2 in the longitudinal direction.

[0104] The hinge seat 31 is further provided with a connecting hole 318 extending along the horizontal direction, and the connecting hole 318 is in communication with the first hinge hole 3111 to connect and fix the first hinge shaft 34.

[0105] Reference Figure 7 The two mounting seats are fixedly connected with the frame body and the door body 2 respectively. The two mounting seats include a first mounting seat and a second mounting seat. The first mounting seat is fixedly connected with the door body 2, and the second mounting seat is fixedly connected with the frame body.

[0106] When the door body 2 is closed at the opening of the frame body, the end of the second mounting seat away from the end frame 13 does not exceed the transverse outer side of the door body 2 in the transverse direction. Moreover, when the door body 2 is rotated to abut the longitudinal outer side of the end frame 13, the end of the first mounting seat away from the door body 2 is flush with the end of the second mounting seat away from the end frame 13 in the transverse direction.

[0107] The first mounting seat includes two first mounting blocks 321 spaced apart along the vertical direction at the ends of the door body 2, and the two first mounting blocks 321 are arranged at the upper and lower ends of the hinge seat 31. Specifically, the spacing between the two first mounting blocks 321 is greater than the vertical dimension of the hinge seat 31, so that the hinge seat 31 can be mounted between the two first mounting blocks 321.

[0108] Since the cross sections of the adjacent ends of the door body 2 and the end frame 13 are circular, each first mounting block 321 is provided with a notch at the end connected with the door body 2, and the side wall of the notch is an arc surface, so that the first mounting block 321 can closely contact the door body 2 and be conveniently mounted and fixed.

[0109] In the embodiment, the first mounting block 321 has an outer arc surface at the end thereof away from the door body 2, and the convex surface of the outer arc surface faces away from the door body 2.

[0110] Each first mounting block 321 is provided with a first mounting hole, and the axis of each first mounting hole extends in the vertical direction.

[0111] The second mounting seat includes two second mounting blocks 331 which are vertically spaced apart at the end of the door body 2 and are arranged at the upper and lower ends of the hinge seat 31. Specifically, the spacing between the two second mounting blocks 331 is greater than the vertical dimension of the hinge seat 31, so that the hinge seat 31 can be mounted between the two second mounting blocks 331.

[0112] Since the cross sections of the end of the door body 2 and the end frame 13 adjacent to the door body 2 are circular, each second mounting block 331 is provided with a notch at the end connected to the door body 2, and the side wall of the notch is an arc surface, so that the second mounting block 331 can be closely attached to the door body 2, facilitating installation and fixation.

[0113] In the embodiment, the second mounting block 331 has an outer arc surface at the end thereof away from the door body 2, and the convex surface of the outer arc surface faces away from the door body 2.

[0114] Each second mounting block 331 is provided with a second mounting hole, and the axis of each second mounting hole extends in the vertical direction.

[0115] Reference Figure 6 In the embodiment, the first hinge shaft 34 realizes the hinged connection between the door body 2 and the hinge seat 31 through the first hinge hole 3111 and the first mounting seat. Specifically, the first hinge shaft 34 can be simultaneously arranged in the first hinge hole 3111 and the first mounting seat, that is, the first hinge shaft 34 can simultaneously pass through the first hinge hole 3111 and the two first mounting holes. Moreover, the first hinge shaft 34 is fixedly connected with the hinge seat 31, and the first hinge shaft 34 is rotatably connected with the first mounting seat. At this time, when an external force is applied to the door body 2 to make it rotate outward relative to the end frame 13, the first mounting seat rotates relative to the first hinge shaft 34, and the first hinge shaft 34 remains relatively stationary with the hinge seat 31. Specifically, the hinge seat 31 and the first hinge shaft 34 are fixedly connected through the fastener 36, and the fastener 36 can limit the vertical position of the first hinge shaft 34.

[0116] Specifically, the first hinge shaft 34 is provided with a through hole having an axis extending in the horizontal direction, and when the first hinge shaft 34 is arranged in the first hinge hole 3111, the through hole can communicate with the connecting hole 318. The fastener 36 is simultaneously arranged in the connecting hole 318 and the through hole to fix the first hinge shaft 34 with the hinge seat 31.

[0117] Reference Figure 1The axis of the first hinged shaft 34 of at least two double-shaft hinges 3 in the same vertical direction is on the same axis, i.e., coaxial. Further, the first hinged shaft 34 of at least two double-shaft hinges 3 in the same vertical direction is fixedly connected to realize synchronous rotation of the at least two double-shaft hinges 3.

[0118] Figure 14 A structure diagram of the connecting hinged shaft 6 in the embodiment.

[0119] Reference Figure 1 And Figure 14 In the embodiment, the first hinged shaft 34 of at least two double-shaft hinges 3 in the same vertical direction is integrally formed into a connecting hinged shaft 6, i.e., a connecting hinged shaft 6 is simultaneously provided in at least two hinged seats 31 and at least two first mounting seats from top to bottom.

[0120] Specifically, the connecting hinged shaft 6 is fixedly connected with the at least two hinged seats 31 and rotatably connected with the at least two first mounting seats, so that the at least two first mounting seats can simultaneously rotate around the connecting hinged shaft 6, realizing coaxial rotation of the at least two first mounting seats to reduce the error of the rotation angle of the at least two first mounting seats.

[0121] The connecting hinged shaft 6 is provided with screw holes 61 corresponding to the hinged seats 31 in the vertical direction. The axis of each screw hole 61 is in the same plane as the central axis of the connecting hinged shaft 6. The connecting hinged shaft 6 is fixedly connected with the at least two hinged seats 31 by being simultaneously inserted into the screw holes 61 and the corresponding connecting holes 318 through the fixing members. At this time, the connecting hinged shaft 6 protrudes upward from the top of the upper first mounting seat and protrudes downward from the bottom of the lower first mounting seat.

[0122] In the embodiment, the number of screw holes 61 is two, corresponding to the two hinged seats 31 arranged in the same vertical direction. In other embodiments, when the double-shaft hinges 3 arranged in the vertical direction between the door body 2 and the frame body are three, four, or other numbers, the number of screw holes 61 is correspondingly arranged as three, four, or other numbers.

[0123] The connecting hinged shaft 6 is further provided with at least one limiting hole 62. At this time, the carrying box further includes a limiting member 7 corresponding to the limiting hole 62, which is inserted into the limiting hole 62 as a spare limiting workpiece, and can be used to limit the vertical position of the connecting hinged shaft 6 when the fastener 36 fails to limit.

[0124] In the embodiment, the number of the limiting holes 62 is two, the two limiting holes 62 are located between the two screw holes 61, and after the connecting hinge shaft 6 is installed, the two limiting holes 62 are located between the two first mounting seats, and the upper limiting hole 62 is spaced from the upper first mounting seat, and the lower limiting hole 62 is spaced from the lower first mounting seat. Specifically, the vertical dimension from the axis of the lower limiting hole 62 to the top of the connecting hinge shaft 6 is not less than the vertical dimension from the top of the lower first mounting seat to the top of the upper hinge seat 31, so as to ensure that when the lower fastener 36 fails to limit and the connecting hinge shaft 6 moves downward, the lower limiting piece 7 can abut against the top of the lower first mounting seat, thereby preventing the connecting hinge shaft 6 from falling off.

[0125] In other embodiments, the number of the limiting holes 62 can be one, the limiting hole 62 is located at the lower end of the connecting hinge shaft 6 and above the first mounting seat below the door body 2; or the limiting hole 62 can be located at the upper end of the connecting hinge shaft 6 and above the first mounting seat above the door body 2.

[0126] The second hinge shaft 35 realizes the hinged connection between the door body 2 and the hinge seat 31 through the second hinge hole 3112 and the second mounting seat. The second hinge shaft 35 can be simultaneously arranged in the second hinge hole 3112 and the second mounting seat, that is, the second hinge shaft 35 can simultaneously pass through the second hinge hole 3112 and the two second mounting holes. The second hinge shaft 35 is connected and fixed with the two second mounting blocks 331, and the second hinge shaft 35 is rotatably connected with the hinge seat 31. At this time, when the door body 2 rotates outward by 90 degrees relative to the end frame 13, the end portion of the door body 2 abuts against the first outer protrusion 312, and the door body 2 continues to be forced to rotate outward relative to the end frame 13, the end portion of the door body 2 drives the hinge seat 31 to rotate around the second hinge shaft 35, and the second hinge shaft 35 remains relatively stationary with the two second mounting blocks 331.

[0127] The principle of the above-mentioned double-shaft hinge 3 for realizing the rotation of the door body 2 relative to the frame body is as follows:

[0128] Reference Figure 8 When the door body 2 is closed at the opening of the frame body, the longitudinal end portion of the door body 2 abuts against the first inner protrusion 313 on the hinge seat 31, so as to limit the inward rotation of the door body 2 relative to the frame body, and the transverse end portion of the end frame 13 of the frame body abuts against the second inner protrusion 315 on the hinge seat 31.

[0129] Reference Figure 11 and Figure 12When an external force is applied to the door body 2 to rotate it outward relative to the frame body, the first mounting seat can rotate around the connecting hinge shaft 6 within a range of 0-90 degrees to realize the rotation of the door body 2 within a range of 0-90 degrees relative to the frame body. After the door body 2 is rotated outward relative to the frame body by 90 degrees, the longitudinal outer end thereof abuts against the first outer protrusion 312 on the hinge seat 31 to realize the rotation of the door body 2 within a range of 0-90 degrees relative to the connecting hinge shaft 6.

[0130] With reference to Figure 13 When the external force is continuously applied to the door body 2 to rotate it relative to the frame body, the door body 2 pushes the hinge seat 31 to rotate together, at which time the hinge seat 31 rotates around the second hinge shaft 35 within a range of 0-180 degrees to realize the rotation of the door body 2 within a range of 90-270 degrees relative to the frame body. Moreover, when the door body 2 is rotated to abut against the longitudinal outer side of the frame body, the second inner protrusion 315 abuts against the end of the frame body.

[0131] From the above technical solution, the present application has at least the following advantages and positive effects:

[0132] When the above-mentioned dual-shaft hinge is installed between the door body and the frame body, it can realize the large-angle opening and closing of the door body relative to the frame body within a range of 0-270 degrees, and the outer periphery of the dual-shaft hinge does not exceed the outer side of the frame body and the door body, so that the entire outer side of the carrying case is flat without protruding structures.

[0133] Further, the first hinge shafts of the two dual-shaft hinges in the same vertical direction are integrally formed to form the connecting hinge shaft, that is, the two dual-shaft hinges in the same vertical direction share one connecting hinge shaft, so that the two first mounting seats can rotate around the connecting hinge shaft at the same time, realizing the coaxial rotation of the two first mounting seats to reduce the error of the rotation angle of the two first mounting seats.

[0134] Although the present application has been described with reference to several exemplary embodiments, it is understood that the terms used are illustrative and not restrictive terms. Since the present application can be embodied in many different forms without departing from the spirit or essential characteristics thereof, it is understood that the above-described embodiments are not limited to any of the aforementioned details but are to be construed broadly within the spirit and scope of the appended claims, thus all changes and modifications that fall within the metes and bounds of the claims, or equivalents of such metes and bounds are intended to be embraced by the terms thereof.

Claims

1. A dual-axis hinge for a transport container, used to connect the frame and door of the transport container, characterized in that, The dual-axis hinge includes a hinge base, two mounting bases respectively connected to the frame and the door body, and a first hinge shaft and a second hinge shaft connecting the two mounting bases to the hinge base respectively; the two mounting bases include a first mounting base and a second mounting base; The outer periphery of the hinge seat does not exceed the outer side of the frame and the door body; the hinge seat is provided with a first hinge hole and a second hinge hole spaced apart, the axes of the first hinge hole and the second hinge hole both extend vertically, the first hinge shaft realizes the hinge connection between the door body and the hinge seat through the first hinge hole, and the second hinge shaft realizes the hinge connection between the frame and the hinge seat through the second hinge hole; The hinge base includes a body, two first protrusions disposed on the outer periphery of the body and extending outward, and two second protrusions disposed on the outer periphery of the body and extending outward. The axis of the first hinge hole and the axis of the second hinge hole are located on a straight line extending along the length direction of the body. The two first protrusions are spaced apart outside the first hinge holes. The two first protrusions are respectively a first outer protrusion and a first inner protrusion. The first outer protrusion is located at the end of the width direction of the body, and the first inner protrusion is located at the end of the length direction of the body. The two first protrusions are respectively used to abut against the door body to realize a 90-degree opening and closing between the door body and the hinge base. The two second protrusions are arranged on both sides of the second hinge hole in the width direction of the body to abut against the frame body to realize a 180-degree opening and closing between the frame body and the hinge base.

2. The biaxial hinge according to claim 1, characterized in that, The plane containing the ends of the two second protrusions away from the first hinge hole passes through the axis of the second hinge hole; The line connecting the end of the first outer protrusion near the first inner protrusion and the axis of the first hinge hole extends along the width direction of the body, and the line connecting the end of the first inner protrusion near the first outer protrusion and the axis of the first hinge hole extends along the length direction of the body.

3. The biaxial hinge according to claim 2, characterized in that, The main body includes a square portion, a first semicircular portion and a second semicircular portion located at both ends of the square portion along its length; The two second protrusions are located at both ends of the second semicircle along the width direction of the body, and the two second protrusions are inclined outward from the end of the second semicircle toward the first semicircle.

4. The biaxial hinge according to claim 3, characterized in that, The first inner protrusion is inclined outward from the center of the first semicircle in a direction away from the first outer protrusion, and the first outer protrusion is inclined outward from one end of the first semicircle in a direction away from the first semicircle. The first outer protrusion and the second protrusion away from the first outer protrusion are centrally symmetrical about the center point of the line connecting the axis of the first hinge hole and the axis of the second hinge hole.

5. The biaxial hinge according to claim 1, characterized in that, The first mounting base is fixedly connected to the door body, and the second mounting base is fixedly connected to the frame body; The first hinge shaft passes through both the first hinge hole and the first mounting base, and the first hinge shaft is fixedly connected to the hinge base, and the first hinge shaft is rotatably connected to the first mounting base. The second hinge shaft passes through both the second hinge hole and the second mounting base, and the second hinge shaft is rotatably connected to the hinge base, and the second hinge shaft is fixedly connected to the second mounting base.

6. The biaxial hinge according to claim 5, characterized in that, The hinge seat is fixed to the first hinge shaft by fasteners; The hinge seat has a connecting hole with its axis extending horizontally, and the connecting hole communicates with the first hinge hole. The first hinge shaft has a corresponding through hole, and the fastener is inserted into both the connecting hole and the through hole.

7. The biaxial hinge according to claim 6, characterized in that, The first mounting base includes two first mounting blocks arranged vertically at intervals, and the two first mounting blocks are arranged at the upper and lower ends of the hinge base. Each first mounting block is provided with a first mounting hole, and the first hinge shaft passes through each first mounting hole and the first hinge hole simultaneously. The second mounting base includes two vertically spaced second mounting blocks, which are located at the upper and lower ends of the hinge base. Each second mounting block has a second mounting hole, and the second hinge shaft passes through both the second mounting hole and the second hinge hole.

8. A transport container, characterized in that, It includes a frame, a door, and a dual-axis hinge as described in any one of claims 1 to 7, wherein each of the door and the frame are rotatably connected by at least two of the dual-axis hinges.

9. The transport container according to claim 8, characterized in that, The frame has an opening on one side, and each of the doors is rotatably connected to the opening of the frame; At least two of the dual-axis hinges are vertically spaced between the frame and the door, and the first hinge axes of the at least two dual-axis hinges located in the same vertical direction are connected and coaxial.

10. The transport container according to claim 9, characterized in that, At least two of the aforementioned dual-axis hinges located in the same vertical direction are integrally formed into a connecting hinge shaft, which is simultaneously connected to at least two of the aforementioned hinge seats and at least two of the aforementioned first mounting seats. At least one limiting hole is provided on the connecting hinge shaft; The carrier box also includes a limiting member corresponding to the limiting hole. The limiting member is inserted into the limiting hole to limit the vertical position of the connecting hinge shaft.

11. The transport container according to claim 8, characterized in that, There is a gap between the frame and the door, and the dual-axis hinge is located at the gap. Along the length direction of the transport box, the outer side of the dual-axis hinge does not exceed the outer side of the frame; along the width direction of the transport box, the outer side of the dual-axis hinge does not exceed the outer side of the door.

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