A cabinet capable of opening and closing at a large angle

Abstract

The present invention discloses a cabinet capable of opening and closing at a large angle, comprising: a cabinet body, a door frame, and a top and bottom hinge connecting the cabinet body and the door frame; a fixed base of the top and bottom hinges includes a protrusion protruding from the fixed base on a side away from the hinge base, and a screw is passed through a through hole on the protrusion to fix the protrusion to the top plate and bottom plate of the cabinet body; the door frame includes an upper horizontal frame, a hinge vertical frame, a lower horizontal frame, and a handle vertical frame connected in sequence; the hinge vertical frame is further provided with a trim strip protruding from the hinge vertical frame; both ends of the trim strip are provided with a cylindrical groove, and the hinge base is also provided with a corresponding mounting groove, and a pin is inserted into the cylindrical grooves at both ends of the trim strip and the mounting groove on the hinge base so that the trim strip is rotatably connected to the hinge base. By providing a top and bottom hinge fixedly connected to the cabinet body and the door frame rotatably connected to the top and bottom hinges, when the door frame is opened, only the door frame rotates, and the door frame is not restricted by obstructions, thereby increasing the opening angle; and no hinge is exposed, so the cabinet is clean, simple, and safe.

Description

Technical Field

[0001] The present invention relates to the technical field of furniture, and more particularly to a cabinet capable of opening and closing at a large angle. Background Art

[0002] At present, TV cabinets or desk cabinets need to add a double door. When watching TV or studying, the double door is required to be fully open with no hinges exposed, ensuring the safety of children without occupying indoor activity space or affecting the opening of other cabinet door panels.

[0003] Conventional hinges fitted to existing aluminum-framed doors are limited in opening angle, typically to a maximum of 120 degrees. Prior art (CN216240203U) discloses floor hinges for casement doors that can open 180 degrees. However, both 120-degree and 180-degree hinges occupy indoor space when the door is open, and can easily collide with the door panel if left open for extended periods. Furthermore, the exposed hinges pose a risk of pinching fingers, making them dangerous for children.

[0004] Therefore, there is an urgent need to provide a cabinet that can be opened and closed at a large angle, where the cabinet door has a large opening angle without affecting or occupying indoor activity space, and has no exposed hinges to ensure children's safety. Summary of the Invention

[0005] In view of this, the present invention provides a cabinet capable of opening and closing at a large angle, comprising: a cabinet body, a door frame, and a top and bottom hinge connecting the cabinet body and the door frame;

[0006] The cabinet body includes a top plate, a left side plate, a bottom plate and a right side plate connected in sequence;

[0007] The top and bottom hinge includes a fixed base, a connecting strip, and a hinge base connected in sequence. The fixed base is arranged parallel to the hinge base, and the connecting strip connects the fixed base and the hinge base. The fixed base includes a protrusion protruding from the fixed base on a side away from the hinge base. The protrusion is provided with at least one through hole, and a screw is passed through the through hole to fix the protrusion to the top plate and the bottom plate. The fixed base is also provided with a hollow area, and the projection of the hollow area along the direction from the hinge base to the fixed base at least partially overlaps with the protrusion.

[0008] The door frame includes an upper horizontal frame, a hinge vertical frame, a lower horizontal frame and a handle vertical frame connected in sequence; along the direction perpendicular to the plane of the door frame, the hinge vertical frame is also provided with a trim strip protruding from the hinge vertical frame; along the extension direction of the trim strip, the length of the trim strip is less than the length of the hinge vertical frame, both ends of the trim strip are provided with a cylindrical groove recessed into the inside of the trim strip, the cylindrical groove at the top of the trim strip is recessed into the inside of the trim strip along the direction of the top plate pointing to the bottom plate, and the cylindrical groove at the bottom end of the trim strip is recessed into the inside of the trim strip along the direction of the bottom plate pointing to the top plate. The hinge base is also provided with a mounting groove corresponding to the cylindrical groove, and the pin is inserted into the cylindrical grooves at both ends of the trim strip and the mounting grooves on the hinge base to enable the trim strip to be rotatably connected to the hinge base;

[0009] When the cabinet is in a closed state, the upper horizontal frame is in contact with the top plate, and the lower horizontal frame is in contact with the bottom plate; when the cabinet is in an open state, the door frame rotates about the central axis of the pin, and the maximum angle between the upper horizontal frame and the top plate is greater than 180 degrees, and the maximum angle between the lower horizontal frame and the bottom plate is greater than 180 degrees.

[0010] Optionally, the hinged base is a cube or a cuboid.

[0011] Optionally, along the direction from the top plate to the bottom plate, the sum of the length of the edge trimming strip and the length of the hinge base is equal to the length of the vertical frame of the hinge.

[0012] Optionally, along the direction from the top plate to the bottom plate, the length of the fixed base is greater than the length of the hinged base.

[0013] Optionally, the end of the connecting strip connected to the fixed base is the first end, and the end of the connecting strip connected to the hinged base is the second end. In the direction from the top plate to the bottom plate, the length of the first end is greater than the length of the second end.

[0014] Optionally, the connecting bar is a right-angled trapezoidal connecting bar.

[0015] Optionally, a groove is provided at the intersection of the side of the edge trim strip away from the handle vertical frame and the side of the edge trim strip close to the hinge vertical frame.

[0016] Optionally, along a direction perpendicular to the plane where the connecting strip is located, the width of the fixed base is greater than the width of the hinged base.

[0017] Optionally, in a direction perpendicular to the plane where the door frame is located, the handle vertical frame is provided with an L-shaped handle strip protruding from the handle vertical frame.

[0018] Optionally, a gasket is provided between the screw and the protrusion.

[0019] Compared with the prior art, the cabinet capable of opening and closing at a large angle provided by the present invention achieves at least the following beneficial effects:

[0020] The present invention provides a cabinet capable of opening and closing at a large angle, comprising: a cabinet body, a door frame, and a top and bottom hinge connecting the cabinet body and the door frame; the cabinet body comprises a top plate, a left side plate, a bottom plate, and a right side plate connected in sequence; the top and bottom hinge comprises a fixed base, a connecting strip, and a hinge base connected in sequence, the fixed base and the hinge base are arranged in parallel, and the connecting strip connects the fixed base and the hinge base; the fixed base comprises a protrusion protruding from the fixed base on a side away from the hinge base, the protrusion is provided with at least one through hole, and a screw is passed through the through hole to fix the protrusion to the top plate and the bottom plate; the fixed base is also provided with a hollow area, the hollow area The projection in the direction from the hinge base to the fixed base at least partially overlaps with the protrusion; the door frame includes an upper horizontal frame, a hinge vertical frame, a lower horizontal frame, and a handle vertical frame connected in sequence; the hinge vertical frame is also provided with a trim strip protruding from the hinge vertical frame in a direction perpendicular to the plane of the door frame; along the extension direction of the trim strip, the length of the trim strip is less than the length of the hinge vertical frame, both ends of the trim strip are provided with cylindrical grooves, and the hinge base is also provided with mounting grooves corresponding to the cylindrical grooves, and the trim strip is rotatably connected to the hinge base by inserting a pin into the cylindrical grooves at both ends of the trim strip and the mounting groove on the hinge base. The door frame and the cabinet body are connected by providing a top and bottom hinge, the top and bottom hinges are fixedly connected to the cabinet body, and the door frame is rotatably connected to the top and bottom hinges. During the opening of the door frame, the top and bottom hinges are fixed in position and only the door frame rotates without any restrictions or obstructions, thereby increasing the opening angle of the door frame; when the door frame is in the open state, there is no exposed hinge, which is clean, simple and safe; the door frame can be in the open state for a long time without affecting the indoor activity space or the overall aesthetic requirements of the interior.

[0021] Of course, any product implementing the present invention does not necessarily need to achieve all of the technical effects described above at the same time.

[0022] Further features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

[0024] Figure 1 This is a schematic diagram of a cabinet capable of opening and closing at a large angle provided by the present invention;

[0025] Figure 2 This is another schematic diagram of the cabinet capable of opening and closing at a large angle provided by the present invention;

[0026] Figure 3 This is a schematic diagram of a top and bottom hinge in a cabinet capable of opening and closing at a large angle provided by the present invention;

[0027] Figure 4 This is another schematic diagram of the top and bottom hinges in the cabinet capable of opening and closing at a large angle provided by the present invention;

[0028] Figure 5 This is a schematic diagram of a door frame in a cabinet that can open and close at a large angle provided by the present invention;

[0029] Figure 6 yes Figure 5 An enlarged schematic diagram of area A in the middle;

[0030] Figure 7 This is a schematic diagram of the door frame and the top and bottom hinges of the cabinet that can open and close at a large angle provided by the present invention;

[0031] Figure 8 yes Figure 7 An enlarged schematic diagram of area B in the middle;

[0032] Figure 9 yes Figure 7 An enlarged schematic diagram of the middle C area;

[0033] Figure 10 This is a top view of the door frame of the cabinet that can open and close at a large angle provided by the present invention;

[0034] 1-cabinet, 2-door frame, 3-top and bottom hinge, 4-pin, 11-top plate, 12-left side plate, 13-bottom plate, 14-right side plate, 21-upper horizontal frame, 22-hinge vertical frame, 23-lower horizontal frame, 24-handle vertical frame, 25-edging strip, 26-handle strip, 31-fixed base, 32-connecting strip, 33-hinge base, 34-protrusion, 35-through hole, 36-screw, 37-hollow area, 38-gasket, 321-first end, 322-second end, 331-installation slot, 251-cylindrical slot, 252-groove. DETAILED DESCRIPTION

[0035] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangement of components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention.

[0036] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

[0037] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0038] In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0039] It should be noted that like reference numerals and letters refer to like items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0040] The present invention provides a cabinet that can be opened and closed at a large angle. Figures 1-6 、 Figure 8-Figure 9 , Figure 1 The cabinet is closed. Figure 2 The cabinet is in the open state; the cabinet includes a cabinet body 1, a door frame 2, and a top and bottom hinge 3 connecting the cabinet body 1 and the door frame 2;

[0041] The cabinet 1 includes a top plate 11, a left side plate 12, a bottom plate 13 and a right side plate 14 connected in sequence;

[0042] The top and bottom hinge 3 includes a fixed base 31, a connecting strip 32, and a hinge base 33, which are connected in sequence. The fixed base 31 and the hinge base 33 are arranged parallel to each other, and the connecting strip 32 connects the fixed base 31 and the hinge base 33. The side of the fixed base 31 away from the hinge base 33 includes a protrusion 34 protruding from the fixed base 31. The protrusion 34 is provided with at least one through-hole 35. A screw 36 is inserted through the through-hole 35 to fix the protrusion 34 to the top plate 11 and the bottom plate 13. The fixed base 31 also has a hollow area 37. The projection of the hollow area 37 along the direction from the hinge base 33 to the fixed base 31 at least partially overlaps with the protrusion 34.

[0043] The door frame 2 includes an upper horizontal frame 21, a hinge vertical frame 22, a lower horizontal frame 23 and a handle vertical frame 24 connected in sequence; in a direction perpendicular to the plane of the door frame 2, the hinge vertical frame 22 is further provided with a trim strip 25 protruding from the hinge vertical frame 22; along the extending direction of the trim strip 25, the length of the trim strip 25 is less than the length of the hinge vertical frame 22, and both ends of the trim strip 25 are provided with a cylindrical groove 251 recessed into the interior of the trim strip 25, and the top of the trim strip 25 is provided with a cylindrical groove 251 recessed into the interior of the trim strip 25. The cylindrical groove 251 is recessed toward the inside of the edge strip 25 along the direction from the top plate 11 to the bottom plate 13, and the cylindrical groove 251 at the bottom end of the edge strip 25 is recessed toward the inside of the edge strip 25 along the direction from the bottom plate 13 to the top plate 11. The hinge base 33 is also provided with an installation groove 331 corresponding to the cylindrical groove 251. The pin 4 is inserted into the cylindrical grooves 251 at both ends of the edge strip 25 and the installation groove 331 on the hinge base 33 to rotate the edge strip 25 and the hinge base 33.

[0044] When the cabinet is closed, the door frame 2 fits against the top plate 11 and the bottom plate 13; when the cabinet is open, the door frame 2 rotates around the central axis of the pin 4, and the maximum angle between the door frame 2 and the top plate 11 and the bottom plate 13 is greater than 180 degrees.

[0045] Reference Figure 1 The present embodiment provides a cabinet capable of opening and closing at a large angle, comprising a cabinet body 1, a door frame 2, and a top and bottom hinge 3 connecting the cabinet body 1 and the door frame 2. Figure 1 The two door frames 2 are provided for schematic illustration only. Figure 1 In the closed state of the cabinet, the upper horizontal frame 21 is in contact with the top plate 11, and the lower horizontal frame 23 is in contact with the bottom plate 13. The cabinet body 1 and the door frame 2 are connected by the top and bottom hinges 3, which can increase the opening angle of the door frame 2 compared with ordinary hinges.

[0046] Reference Figure 2 The cabinet body 1 includes a top plate 11, a left side plate 12, a bottom plate 13 and a right side plate 14 connected in sequence; specifically, a back plate (not shown in the figure) can also be provided on the side of the cabinet body 1 away from the door frame 2 to make the cabinet completely closed and reduce the accumulation of dust in the cabinet. Figure 2 In the fully open state of the cabinet, when the door frame 2 is fully opened, the angle between the upper horizontal frame 21 and the top plate 11 is approximately 260 degrees, and the angle between the lower horizontal frame 23 and the bottom plate 13 is approximately 260 degrees; compared with the prior art, the opening angle of the door frame 2 is increased, and the door frame 2 can be folded to the side of the left plate 12 or the right plate 14, which does not occupy the indoor activity space and is not prone to bumps.

[0047] Reference Figure 3The top and bottom hinge 3 includes a fixed base 31, a connecting strip 32 and a hinge base 33 connected in sequence. The fixed base 31 and the hinge base 33 are arranged in parallel. The connecting strip 32 connects the fixed base 31 and the hinge base 33. The top and bottom hinge 3 provided in this embodiment has a simple structure and is easy to install. Figure 1 , the top and bottom hinge 3 is completely invisible after installation, making it more beautiful.

[0048] It should be noted that when the cabinet is provided with two biparting door frames 2, four top and bottom hinges are required, namely the upper left hinge, the lower left hinge, the upper right hinge and the lower right hinge. The upper left hinge and the upper right hinge are connected to the top plate 11, and the lower left hinge and the lower right hinge are connected to the bottom plate 13. The upper left hinge and the lower right hinge have the same shape, the lower left hinge and the upper right hinge have the same shape, and the upper right hinge and the upper left hinge are symmetrical in shape. Figure 3 Only the lower left hinge is shown for schematic illustration. The side of the fixed base 31 away from the hinge base 33 includes a protrusion 34 protruding from the fixed base 31, and the protrusion 34 is provided with at least one through hole 35; Figure 3 In the figure, only two through holes are provided on the protrusion 34 for schematic illustration, and the number and shape of the through holes are not specifically limited.

[0049] Reference Figure 4 Fixed base 31 also has a hollowed-out area 37. The projection of hollowed-out area 37 along the direction from hinge base 33 toward fixed base 31 at least partially overlaps with protrusion 34. The provision of hollowed-out area 37 saves material and reduces costs. Screws 36 are also provided within hollowed-out area 37. Screws 36 pass through through-holes 35 to securely connect protrusion 34 to top plate 11 and bottom plate 13.

[0050] It should be noted that, referring to Figure 8 The fixed base 31, connecting strip 32, and hinge base 33 are sequentially connected to form a U-shaped structure, and the hinge vertical frame 22 is embedded in the U-shaped area. A protrusion 34 is provided. When the protrusion 34 is connected to the top plate 11 and the bottom plate 13 by screws, the screws 36 are placed in the hollow area 37. This prevents the hinge vertical frame 22 from colliding with the screws 36, thereby preventing the screws 36 from scratching the hinge vertical frame 22. Specifically, the top plate 11 and the bottom plate 13 can also be provided with a groove base (not shown) corresponding to the protrusion 34, so that the protrusion 34 is embedded in the groove base, making the installation more stable and more aesthetically pleasing.

[0051] Reference Figure 5The door frame 2 includes an upper horizontal frame 21, a vertical hinge frame 22, a lower horizontal frame 23, and a vertical handle frame 24, which are connected in sequence. Specifically, a door panel (not shown) may be provided inside the door frame 2. The door panel may be a wooden door panel or a glass core board. The vertical hinge frame 22 is further provided with a trim strip 25 protruding from the vertical hinge frame 22 in a direction perpendicular to the plane of the door frame 2. Along the extension direction of the trim strip 25, the length of the trim strip 25 is less than the length of the vertical hinge frame 22. Both ends of the trim strip 25 are provided with cylindrical grooves 251 recessed into the trim strip 25.

[0052] It should be noted that the end of the edge strip 25 close to the top plate 11 is the top end, and the end of the edge strip 25 close to the bottom plate 13 is the bottom end; Figure 6 Only the cylindrical groove 251 at the top of the edge trimming strip 25 is shown as an example. The cylindrical groove 251 at the top of the edge trimming strip 25 is recessed into the interior of the edge trimming strip 25 along the direction from the top plate 11 to the bottom plate 13. Similarly, the cylindrical groove 251 at the bottom of the edge trimming strip 25 is recessed into the interior of the edge trimming strip 25 along the direction from the bottom plate 13 to the top plate 11.

[0053] Continue to refer to Figure 3 The hinge base 33 is also provided with an installation groove 331 corresponding to the cylindrical groove 251; the edge strip 25 is rotatably connected to the hinge base 33 by inserting the pin into the cylindrical grooves 251 at both ends of the edge strip 25 and the installation groove 331 on the hinge base 33, and the edge strip 25 rotates around the center axis of the pin 4.

[0054] It is understandable that when hinges are used to connect the door frame and the cabinet body in the prior art, the hinges are fixed to the door frame. When the door frame is opened, the hinges rotate together with the door frame, resulting in a limited opening angle of the door frame. In addition, since the hinges are directly fixed to the door frame, the hinges are exposed after the door frame is opened, posing a safety hazard. In this embodiment, the door frame 2 and the cabinet body 1 are fixed by the top and bottom hinges 3. During the opening process of the door frame 2, the top and bottom hinges 3 are fixed. During the opening process of the door frame 2, the top and bottom hinges 3 are fixed, and there is no safety hazard. Only the edge strip 25 rotates about the central axis of the pin 4, thereby driving the door frame 2 to rotate. The door frame 2 is not restricted or blocked during rotation, thereby increasing the opening angle of the door frame 2. Figure 2 When the door frame 2 is fully opened, the angle between the upper horizontal frame 21 and the top plate 11 is about 260 degrees, and the angle between the lower horizontal frame 23 and the bottom plate 13 is about 260 degrees; Figure 8 , Figure 8 Only the upper left hinge is shown for schematic illustration. The mounting groove 331 on the hinge base 33 of the upper left hinge can penetrate the hinge base 33. When the hinge base 33 and the edge trimming strip 25 are connected by the pin 4, a limiting ring (not shown in the figure) can be provided between the hinge base 33 and the edge trimming strip 25 to limit the pin 4 and prevent it from loosening. Figure 9 , Figure 9Only the lower left hinge is shown for schematic illustration. The mounting groove 331 on the hinge base 33 of the lower left hinge does not penetrate the hinge base 33. When the hinge base 33 and the edge strip 25 are connected by the pin 4, the mounting groove 331 supports the pin 4 and the edge strip 25.

[0055] The cabinet provided in this embodiment includes: a cabinet body 1, a door frame 2, and a top and bottom hinge 3 connecting the cabinet body 1 and the door frame 2; the top and bottom hinge 3 is fixedly connected to the cabinet body 1, and the door frame 2 is rotatably connected to the top and bottom hinge 3. During the opening process of the door frame 2, only the door frame 2 rotates without any obstruction, thereby increasing the opening angle of the door frame 2; when the door frame 2 is in the open state, there is no exposed hinge, which is clean, simple and safe; the door frame 2 can be in the open state for a long time without affecting the indoor activity space or destroying the overall aesthetic requirements of the interior.

[0056] In some optional embodiments, continue to refer to Figure 3 , the hinged base 33 is a cube or a cuboid.

[0057] It can be understood that when the hinge base 33 is a cube or a cuboid, the shape of the hinge base matches the shape of the trim strip 25, which is more beautiful; in addition, the connecting strip 32 connects the hinge base 33 and the fixed base 31. Compared with the hinge base 33 being a cylinder or other shapes, the contact area between the connecting strip 32 and the hinge base 33 is larger when the hinge base 33 is a cube or a cuboid, and the connection is more secure.

[0058] In some optional embodiments, continue to refer to Figure 7-Figure 9 , along the direction from the top plate 11 to the bottom plate 13 , the sum of the length of the edge strip 25 and the length of the hinge base 33 is equal to the length of the hinge vertical frame 22 .

[0059] It can be understood that when both ends of the edge strip 25 are provided with a top and bottom hinge 3, the sum of the length D of the edge strip 25 and the length d of the two hinge bases 33 is equal to the length of the vertical hinge frame 22; this avoids the top and bottom hinge 3 from exceeding the edge of the door frame 2 after the top and bottom hinge 3 are set, saving materials and being more beautiful.

[0060] In some optional embodiments, continue to refer to Figure 2 、 Figure 3 , in the direction from the top plate 11 to the bottom plate 13 , the length of the fixed base 31 is greater than the length of the hinged base 33 .

[0061] Specifically, Figure 2Only the lower left hinge is shown for schematic illustration. At this time, the length of the fixed base 31 is in the same plane as the bottom of the hinged base 33, and the hinged base 33 is lengthened in the direction away from the bottom plate 13, so that the length 31 of the fixed base is greater than the length of the hinged base 33; similarly, the length of the fixed base 31 of the upper left hinge is in the same plane as the top of the hinged base 33, and the hinged base 33 is lengthened in the direction away from the top plate 11, so that the length 31 of the fixed base is greater than the length of the hinged base 33.

[0062] It can be understood that the longer length of the fixing base 31 increases the contact area between the fixing base 31 and the top plate 11 and the bottom plate 13, making the connection more secure.

[0063] In some optional embodiments, continue to refer to Figure 2 、 Figure 3 The end of the connecting bar 32 connected to the fixed base 31 is the first end 321, and the end of the connecting bar 32 connected to the hinged base 33 is the second end 322. In the direction along the top plate 11 pointing to the bottom plate 13, the length of the first end 321 is greater than the length of the second end 322.

[0064] It can be understood that, in the direction from top plate 11 toward bottom plate 13, when the length of fixed base 31 is greater than the length of hinged base 33, the length of the end of connecting bar 32 connected to fixed base 31 is greater than the length of the end of connecting bar 32 connected to hinged base 33, that is, the length of first end 321 is greater than the length of second end 322. The longer length of first end 321 increases the contact area between connecting bar 32 and fixed base 31, making the connection more secure.

[0065] In some optional embodiments, continue to refer to Figure 3 , the connecting bar 32 is a right-angled trapezoidal connecting bar.

[0066] It can be understood that the connecting bar 32 is a right-angled trapezoidal connecting bar, and the length of one end of the connecting bar 32 connected to the fixed base 31 is greater than the length of one end of the connecting bar 32 connected to the hinged base 33, which increases the contact area between the connecting bar 32 and the fixed base 31 and makes the connection tighter.

[0067] In some optional embodiments, continue to refer to Figure 5 、 Figure 6 A groove 252 is provided at the intersection of the side of the edge strip 25 away from the handle vertical frame 24 and the side of the edge strip 25 close to the hinge vertical frame 22.

[0068] It can be understood that when the connecting strip 32 is a right-angled trapezoidal connecting strip, since the length of the end of the connecting strip 32 connected to the fixed base 31 is greater than the length of the end of the connecting strip 32 connected to the hinge base 33, a groove 252 needs to be provided at the intersection of the side of the edge strip 25 away from the handle vertical frame 24 and the side of the edge strip 25 close to the hinge vertical frame 22, so that the end of the connecting strip 32 connected to the fixed base can pass through the groove 252 of the hinge vertical frame 22 and be connected to the top plate 11 and the bottom plate 13, thereby avoiding deformation caused by collision between the connecting strip 32 and the hinge vertical frame 22.

[0069] In some optional embodiments, continue to refer to Figure 3 , along the direction perpendicular to the plane where the connecting strip 32 is located, the width of the fixed base 31 is greater than the width of the hinged base 33.

[0070] It is understood that the wide width of the fixing base 31 increases the contact area between the fixing base 31 and the top plate 11 and bottom plate 13, thereby strengthening the connection. Furthermore, the wide width of the fixing base 31 corresponds to the wide width of the protrusion 34. Multiple through holes 35 can be provided on the protrusion 34 according to actual needs, allowing the fixing base 31 to be fixedly connected to the top plate 11 using multiple screws, thereby further strengthening the connection.

[0071] In some optional embodiments, referring to Figure 5 、 Figure 10 In a direction perpendicular to the plane where the door frame 2 is located, the handle vertical frame 24 is provided with an L-shaped handle strip 26 protruding from the handle vertical frame 24.

[0072] It should be noted that, in the direction perpendicular to the plane where the door frame 2 is located, the thickness of the handle strip 26 is not greater than the thickness of the edge strip 25, that is, the thickness of the handle strip is less than or equal to the thickness of the edge strip 25, so as to avoid collision with the core board of the adjacent cabinet when the door frames 2 of multiple cabinets are arranged side by side and opened.

[0073] It is understood that the handle frame 24 is provided with an L-shaped handle strip 26 protruding from the handle frame 24, so that the handle frame 24 has a built-in handle groove. When a cabinet is equipped with a handle, the thickness of the handle is greater than the thickness of the edge strip 25. When multiple cabinets are arranged side by side and the door frames are opened 180 degrees, the additional handle will collide with the core board of the adjacent cabinet. The built-in handle groove of the handle frame 24 does not require a separate handle, which prevents collision with the core board and the glass core board from breaking.

[0074] In some optional embodiments, continue to refer to Figure 4 A gasket 38 is provided between the screw 36 and the protrusion 34 .

[0075] Specifically, Figure 4In this example, the area of gasket 38 is equal to the area of hollowed-out area 37. Gasket 38 can also be provided only at the position of screw 36 so that the area of gasket 38 and screw 36 are equal. It should be noted that gasket 38 can be a flat gasket to increase the contact area between screw 36 and protrusion 34 to tighten the connection; gasket 38 can also be an elastic gasket to reduce friction between screw 36 and protrusion 34 and prevent loosening.

[0076] It can be seen from the above embodiments that the cabinet capable of opening and closing at a large angle provided by the present invention achieves at least the following beneficial effects:

[0077] The present invention provides a cabinet capable of opening and closing at a large angle, comprising: a cabinet body, a door frame, and a top and bottom hinge connecting the cabinet body and the door frame; the cabinet body comprises a top plate, a left side plate, a bottom plate, and a right side plate connected in sequence; the top and bottom hinge comprises a fixed base, a connecting strip, and a hinge base connected in sequence, the fixed base and the hinge base are arranged in parallel, and the connecting strip connects the fixed base and the hinge base; the fixed base comprises a protrusion protruding from the fixed base on a side away from the hinge base, the protrusion is provided with at least one through hole, and a screw is passed through the through hole to fix the protrusion to the top plate and the bottom plate; the fixed base is also provided with a hollow area, the hollow area The projection in the direction from the hinge base to the fixed base at least partially overlaps with the protrusion; the door frame includes an upper horizontal frame, a hinge vertical frame, a lower horizontal frame, and a handle vertical frame connected in sequence; the hinge vertical frame is also provided with a trim strip protruding from the hinge vertical frame in a direction perpendicular to the plane of the door frame; along the extension direction of the trim strip, the length of the trim strip is less than the length of the hinge vertical frame, both ends of the trim strip are provided with cylindrical grooves, and the hinge base is also provided with mounting grooves corresponding to the cylindrical grooves, and the trim strip is rotatably connected to the hinge base by inserting a pin into the cylindrical grooves at both ends of the trim strip and the mounting groove on the hinge base. The door frame and the cabinet body are connected by providing a top and bottom hinge, the top and bottom hinges are fixedly connected to the cabinet body, and the door frame is rotatably connected to the top and bottom hinges. During the opening of the door frame, the top and bottom hinges are fixed in position and only the door frame rotates without any restrictions or obstructions, thereby increasing the opening angle of the door frame; when the door frame is in the open state, there is no exposed hinge, which is clean, simple and safe; the door frame can be in the open state for a long time without affecting the indoor activity space or the overall aesthetic requirements of the interior.

[0078] Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It should be understood by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A cabinet that can be opened and closed at a large angle, characterized in that: include: A cabinet body, a door frame, and a top and bottom hinge connecting the cabinet body and the door frame; The cabinet body includes a top plate, a left side plate, a bottom plate, and a right side plate connected in sequence; the top and bottom hinges include a fixed base, a connecting strip, and a hinge base connected in sequence, the fixed base and the hinge base being arranged in parallel, and the connecting strip connecting the fixed base and the hinge base; the fixed base includes a protrusion protruding from the fixed base on a side away from the hinge base, the protrusion is provided with at least one through hole, and a screw is passed through the through hole to fix the protrusion to the top plate and the bottom plate; the fixed base is also provided with a hollow area, the projection of the hollow area in the direction from the hinge base to the fixed base at least partially overlaps with the protrusion; The door frame includes an upper horizontal frame, a hinge vertical frame, a lower horizontal frame and a handle vertical frame connected in sequence; along the direction perpendicular to the plane of the door frame, the hinge vertical frame is also provided with a trim strip protruding from the hinge vertical frame; along the extension direction of the trim strip, the length of the trim strip is less than the length of the hinge vertical frame, both ends of the trim strip are provided with a cylindrical groove recessed into the inside of the trim strip, the cylindrical groove at the top of the trim strip is recessed into the inside of the trim strip along the direction of the top plate pointing to the bottom plate, and the cylindrical groove at the bottom end of the trim strip is recessed into the inside of the trim strip along the direction of the bottom plate pointing to the top plate. The hinge base is also provided with a mounting groove corresponding to the cylindrical groove, and the pin is inserted into the cylindrical grooves at both ends of the trim strip and the mounting grooves on the hinge base to enable the trim strip to be rotatably connected to the hinge base; When the cabinet is in a closed state, the upper horizontal frame is in contact with the top plate, and the lower horizontal frame is in contact with the bottom plate; when the cabinet is in an open state, the door frame rotates about the central axis of the pin, and the maximum angle between the upper horizontal frame and the top plate is greater than 180 degrees, and the maximum angle between the lower horizontal frame and the bottom plate is greater than 180 degrees.

2. The cabinet capable of opening and closing at a large angle according to claim 1, characterized in that: The hinged base is a cube or a cuboid.

3. The cabinet capable of opening and closing at a large angle according to claim 2, characterized in that: Along the direction from the top plate to the bottom plate, the sum of the length of the edge strip and the length of the hinge base is equal to the length of the vertical frame of the hinge.

4. The cabinet capable of opening and closing at a large angle according to claim 2, characterized in that: Along the direction from the top plate to the bottom plate, the length of the fixed base is greater than the length of the hinged base.

5. The cabinet capable of opening and closing at a large angle according to claim 4, characterized in that: The end of the connecting strip connected to the fixed base is the first end, and the end of the connecting strip connected to the hinged base is the second end. In the direction from the top plate to the bottom plate, the length of the first end is greater than the length of the second end.

6. The cabinet capable of opening and closing at a large angle according to claim 5, characterized in that: The connecting bar is a right-angle trapezoidal connecting bar.

7. The cabinet capable of opening and closing at a large angle according to claim 5, characterized in that: A groove is provided at the intersection of the side of the edge trim strip away from the handle vertical frame and the side of the edge trim strip close to the hinge vertical frame.

8. The cabinet capable of opening and closing at a large angle according to claim 1, characterized in that: Along a direction perpendicular to the plane where the connecting strip is located, the width of the fixed base is greater than the width of the hinged base.

9. The cabinet capable of opening and closing at a large angle according to claim 1, characterized in that: In a direction perpendicular to the plane where the door frame is located, the handle vertical frame is provided with an L-shaped handle strip protruding from the handle vertical frame.

10. The cabinet capable of opening and closing at a large angle according to claim 1, characterized in that: A gasket is further provided between the screw and the protrusion.

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