Cabinet with large angle opening and closing device

Abstract

The application discloses a cabinet with a large-angle opening and closing device, which comprises a cabinet body, a door frame, and an opening and closing device connecting the cabinet body and the door frame; the opening and closing device comprises a top-and-bottom hinge and a pin rotatingly connected with the top-and-bottom hinge. The fixed part of the pin is connected with the door frame, and a plurality of barbs protruding from the pin are arranged on the outer periphery of the fixed part to prevent the relative position of the door frame and the pin from sliding. The upper pin is limited by a limiting stop ring arranged between the upper hinge to avoid the door frame from being separated from the upper hinge and causing the door panel to fall when the lower hinge is loose. When the cabinet is closed, the upper horizontal frame of the door frame is attached to the top plate of the cabinet body, and the lower horizontal frame is attached to the bottom plate. When the cabinet is opened, the top-and-bottom hinge is fixed with the cabinet body, and the door frame rotates with the upper pin and the lower pin around the central axis of the pin. The maximum included angle between the upper horizontal frame and the top plate is greater than 180 degrees, and the maximum included angle between the lower horizontal frame and the bottom plate is greater than 180 degrees. During the opening process of the door frame, only the door frame and the pin rotate without any limitation, and the opening angle of the door frame is increased.

Description

Technical Field

[0001] This invention relates to the field of furniture technology, and more specifically, to a cabinet with a large-angle opening and closing device. Background Technology

[0002] Currently, the ordinary hinges used in existing aluminum frame doors are limited by the opening angle, generally with a maximum opening angle of 120 degrees. Existing technology (CN216240203U) discloses a top and bottom hinge for a swing door that can open 180 degrees. However, whether it is a 120-degree hinge or a 180-degree top and bottom hinge, it occupies indoor space when the door is open, and prolonged opening can easily cause the door to bump against the door panel; in addition, the exposed hinges pose a risk of pinching fingers, which is very dangerous for children.

[0003] When top and bottom hinges are installed with heavy-duty aluminum frame doors, the large door panel size increases the weight. The top hinge only limits the door panel and does not bear any weight. All the weight of the door panel falls on the bottom hinge. If the bottom hinge becomes loose, the door panel will sink due to its weight. This can cause the pins on the door panel to detach from the top hinge, potentially leading to the door panel falling and injuring people.

[0004] Therefore, there is an urgent need for a cabinet with a large-angle opening and closing device that can limit the pins connecting the hinges and the door panels. Summary of the Invention

[0005] In view of this, the present invention provides a cabinet with a large-angle opening and closing device, comprising: a cabinet body, a door frame, and an opening and closing device connecting the cabinet body and the door frame;

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

[0007] 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 a 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, and both ends of the trim strip are provided with cylindrical grooves recessed into the trim strip.

[0008] The opening and closing device includes a hinge and a pin rotatably connected to the hinge.

[0009] The hinge includes a fixed base, a connecting strip, and a hinge base connected in sequence. The fixed base and the hinge base are arranged parallel to each other. The connecting strip connects the fixed base and the hinge base. The fixed base is fixedly connected to the top plate and the bottom plate. The hinge base is provided with an installation groove corresponding to the cylindrical groove.

[0010] The pin includes a fixing part, a connecting part, and a separating ring connecting the fixing part and the connecting part. The outer periphery of the fixing part is provided with a plurality of barbs protruding from the pin. The fixing part is inserted into the cylindrical groove and fixedly connected to the edge strip. The connecting part is inserted into the mounting groove and rotatably connected to the hinge base, so that the edge strip is rotatably connected to the hinge base.

[0011] The hinge includes an upper hinge, the mounting groove of which penetrates the hinge base. The top of the hinge base is also provided with a limiting groove connected to the mounting groove, and the inner diameter of the mounting groove is smaller than the inner diameter of the limiting groove. The pin includes an upper pin, and the outer periphery of the upper pin's transition part is provided with a retaining groove recessed into the pin. The upper pin is limited by a limiting retaining ring between the limiting groove and the retaining groove. The transition part of the upper pin is inserted into the mounting groove and rotatably connected to the upper hinge, and the fixing part of the upper pin is inserted into the cylindrical groove at the top of the edge trim and fixedly connected to the edge trim, thereby rotatably connecting the edge trim to the upper hinge.

[0012] The hinge also includes a lower hinge, and the pin also includes a lower pin. The adapter of the lower pin is inserted into the mounting groove of the lower hinge and is rotatably connected to the lower hinge. The fixing part of the lower pin is inserted into the cylindrical groove at the bottom of the edge trim and is fixedly connected to the edge trim, thereby making the edge trim rotatably connected to the lower hinge.

[0013] When the cabinet is closed, the upper horizontal frame is attached to the top plate, and the lower horizontal frame is attached to the bottom plate. When the cabinet is open, the door frame, the upper pin, and the lower pin rotate around the central axis of the pin. 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.

[0014] Optionally, a steel ball is also provided between the mounting groove of the lower hinge and the lower pin.

[0015] Optionally, the end of the lower pin adapter that is away from the fixing part is an arc surface.

[0016] Optionally, the fixed base includes a protrusion protruding from the fixed base on the side away from the hinge base. The protrusion has at least one through hole, and the protrusion is fixedly connected to the top plate and the bottom plate by a screw passing through the through hole. The fixed base also has a hollow area, and the projection of the hollow area along the direction from the hinge base to the fixed base at least partially coincides with the protrusion.

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

[0018] The present invention also provides a cabinet with a large-angle opening and closing device, comprising: a cabinet body, a door frame, and an opening and closing device connecting the cabinet body and the door frame;

[0019] The cabinet includes a top panel, a left side panel, a bottom panel, and a right side panel connected in sequence;

[0020] 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 a 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, and both ends of the trim strip are provided with cylindrical grooves recessed into the trim strip.

[0021] The opening and closing device includes a hinge and a pin connected to the hinge;

[0022] The hinge includes a fixed base, a connecting strip, and a hinge base connected in sequence. The fixed base and the hinge base are arranged parallel to each other. The connecting strip connects the fixed base and the hinge base. The fixed base is fixedly connected to the top plate and the bottom plate. The hinge base is provided with an installation groove corresponding to the cylindrical groove.

[0023] The pin includes a fixing part, a connecting part, and a separating ring connecting the fixing part and the connecting part. The pin includes an upper pin, and the fixing part of the upper pin has a threaded structure on its outer periphery. The hinge includes an upper hinge, and the mounting groove of the upper hinge has a corresponding threaded groove on its inner periphery. The fixing part is screwed into the mounting groove and fixedly connected to the hinge base. The connecting part is inserted into the cylindrical groove and rotatably connected to the edge strip, so that the door frame is rotatably connected to the upper hinge.

[0024] The pin also includes a lower pin, and the fixing part of the lower pin has multiple barbs protruding from the pin on its outer periphery. The top and bottom hinges also include a lower hinge. The fixing part is inserted into the cylindrical groove of the lower hinge and fixedly connected to the edge strip. The connecting part is inserted into the mounting groove and rotatably connected to the hinge base, so that the door frame is rotatably connected to the lower hinge. A steel ball is also provided between the mounting groove of the lower hinge and the lower pin.

[0025] When the cabinet is closed, the upper horizontal frame is attached to the top panel, and the lower horizontal frame is attached to the bottom panel. When the cabinet is open, the upper pin is fixed to the upper hinge, the door frame and the lower pin rotate around the central axis of the pin, the maximum angle between the upper horizontal frame and the top panel is greater than 180 degrees, and the maximum angle between the lower horizontal frame and the bottom panel is greater than 180 degrees.

[0026] Optionally, a steel ball is also provided between the mounting groove of the lower hinge and the lower pin.

[0027] Optionally, the end of the lower pin adapter that is away from the fixing part is an arc surface.

[0028] Optionally, the fixed base includes a protrusion protruding from the fixed base on the side away from the hinge base. The protrusion has at least one through hole, and the protrusion is fixedly connected to the top plate and the bottom plate by a screw passing through the through hole. The fixed base also has a hollow area, and the projection of the hollow area along the direction from the hinge base to the fixed base at least partially coincides with the protrusion.

[0029] Optionally, in a direction perpendicular to the plane of the door frame, the vertical edge of the handle is provided with an L-shaped handle strip protruding from the vertical edge of the handle.

[0030] Compared with the prior art, the cabinet with a large-angle opening and closing device provided by the present invention achieves at least the following beneficial effects:

[0031] This invention discloses a cabinet with a large-angle opening and closing device, comprising: a cabinet body, a door frame, and an opening and closing device connecting the cabinet body and the door frame; the opening and closing device includes top and bottom hinges and a pin rotatably connected to the top and bottom hinges. The pin includes a fixed part, a connecting part, and a separating ring connecting the fixed part and the connecting part. The fixed part is fixedly connected to the door frame, and the connecting part is rotatably connected to the top and bottom hinges. The outer periphery of the fixed part is provided with multiple barbs protruding from the pin, which can further prevent the relative position of the edge strip of the door frame and the pin from sliding. By setting a limiting ring between the upper pin and the upper hinge to limit the upper pin, the problem of the door panel falling off when the lower hinge becomes loose is avoided. When the cabinet is closed, the upper horizontal edge of the door frame is flush with the top panel of the cabinet, and the lower horizontal edge is flush with the bottom panel. When the cabinet is open, the hinges are fixed to the cabinet, and the door frame rotates around the central axis of the upper and lower pins. The maximum angle between the upper horizontal edge and the top panel is greater than 180 degrees, and the maximum angle between the lower horizontal edge and the bottom panel is greater than [missing value]. During the opening process, only the door frame and the pins rotate without any obstruction or restriction, increasing the opening angle of the door frame.

[0032] This invention also discloses a cabinet with a large-angle opening and closing device, comprising: a cabinet body, a door frame, and an opening and closing device connecting the cabinet body and the door frame; the opening and closing device includes a hinge and a pin rotatably connected to the hinge. The pin includes a fixing part, a connecting part, and a separating ring connecting the fixing part and the connecting part. The fixing part of the upper pin has a threaded structure on its outer periphery, and the mounting groove of the upper hinge has a corresponding threaded groove on its inner periphery. The fixing part is screwed into the mounting groove and fixedly connected to the upper hinge, and the door frame is rotatably connected to the rotating part of the upper pin; the connecting part of the lower pin is rotatably connected to the lower hinge, and the fixing part of the lower pin is fixedly connected to the door frame. The fixing part has multiple barbs protruding from the pin on its outer periphery, which can further prevent the relative position of the edge strip of the door frame and the pin from sliding. When the cabinet is closed, the upper horizontal edge of the door frame is flush with the top panel of the cabinet, and the lower horizontal edge is flush with the bottom panel. When the cabinet is open, the top and bottom hinges are fixed to the cabinet, the upper pin is fixed to the upper hinge, and the door frame and the lower pin rotate around the central axis of the pin. The maximum angle between the upper horizontal edge and the top panel is greater than 180 degrees, and the maximum angle between the lower horizontal edge and the bottom panel is greater than [missing value]. During the opening process, only the door frame and the lower pin rotate without any obstruction or restriction, increasing the opening angle of the door frame.

[0033] Of course, any product implementing this invention does not necessarily need to achieve all of the technical effects described above at the same time.

[0034] Other features and advantages of the invention will become clear from the following detailed description of exemplary embodiments of the invention with reference to the accompanying drawings. Attached Figure Description

[0035] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the invention and, together with their description, serve to explain the principles of the invention.

[0036] Figure 1 This is a schematic diagram of a cabinet with a large-angle opening and closing device provided by the present invention;

[0037] Figure 2 This is another schematic diagram of the cabinet with a large-angle opening and closing device provided by the present invention;

[0038] Figure 3 This is a schematic diagram of a cabinet door frame and top and bottom hinges with a large-angle opening and closing device provided by the present invention;

[0039] Figure 4 This is a top view of a cabinet door frame with a large-angle opening and closing device provided by the present invention;

[0040] Figure 5 This is a schematic diagram of an opening and closing device in a cabinet with a large-angle opening and closing mechanism provided by the present invention.

[0041] Figure 6 yes Figure 5 A cross-sectional view of the central opening and closing device along the A-A' direction;

[0042] Figure 7 This is a schematic diagram of a pin in a cabinet with a large-angle opening and closing device provided by the present invention;

[0043] Figure 8 This is another schematic diagram of the opening and closing device in the cabinet with a large-angle opening and closing device provided by the present invention;

[0044] Figure 9 yes Figure 8 A cross-sectional view of the opening and closing device along the B-B' direction;

[0045] Figure 10 This is another schematic diagram of the pin in the cabinet with a large-angle opening and closing device provided by the present invention;

[0046] Figure 11 This is another schematic diagram of the opening and closing device in the cabinet with a large-angle opening and closing device provided by the present invention;

[0047] Figure 12 yes Figure 11 A cross-sectional view of the central opening and closing device along the C-C' direction;

[0048] 1-Cabinet body, 11-Top panel, 12-Left side panel, 13-Bottom panel, 14-Right side panel, 2-Door frame, 21-Upper horizontal frame, 22-Hinge vertical frame, 23-Lower horizontal frame, 24-Handle vertical frame, 25-Edge trim, 251-Column groove, 26-Handle strip, 10-Opening and closing device, 3-Top and bottom hinges, 30-Upper hinge, 31-Fixed base, 32-Connecting strip, 33-Hinge base, 331-Mounting groove, 332-Limiting groove, 34-Protrusion, 35-Through hole, 36-Clearing area, 37-Lower hinge, 4-Pin, 41-Fixing part, 411-Barb, 42-Connector part, 421-Slot, 43-Separator ring, 44-Upper pin, 45-Lower pin, 5-Limiting retaining ring, 6-Steel ball. Detailed Implementation

[0049] 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 set forth in these embodiments, numerical expressions, and values ​​do not limit the scope of the invention.

[0050] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0051] Techniques, methods, and apparatus known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and apparatus should be considered part of the specification.

[0052] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0053] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0054] Example 1:

[0055] Reference Figures 1-10 The present invention provides a cabinet with a large-angle opening and closing device, comprising: a cabinet body 1, a door frame 2, and an opening and closing device 10 connecting the cabinet body 1 and the door frame 2;

[0056] 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;

[0057] 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. Along the direction perpendicular to the plane of the door frame 2, the hinge vertical frame 22 is also provided with a trim strip 25 protruding from the hinge vertical frame 22. Along the extension 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 cylindrical grooves 251 that are recessed into the trim strip 25.

[0058] The opening and closing device 10 includes a hinge 3 and a pin 4 rotatably connected to the hinge 3;

[0059] The 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, and the connecting strip 32 connects the fixed base 31 and the hinge base 33. The fixed base 31 is fixedly connected to the top plate 11 and the bottom plate 13. The hinge base 33 is provided with an installation groove 331 corresponding to the columnar groove 251.

[0060] The pin 4 includes a fixing part 41, a connecting part 42 and a separating ring 43 connecting the fixing part and the connecting part. The outer periphery of the fixing part 41 is provided with a plurality of barbs 411 protruding from the pin 4. The fixing part 41 is inserted into the cylindrical groove 251 and fixedly connected to the edge strip 25. The connecting part 42 is inserted into the mounting groove 331 and rotatably connected to the hinge base 33, so that the edge strip 25 is rotatably connected to the hinge base 33.

[0061] The hinge 3 includes an upper hinge 30, the mounting groove 331 of the upper hinge 30 passes through the hinge base 33, and the top of the hinge base 33 is also provided with a limiting groove 332 connected to the mounting groove 331. The inner diameter of the mounting groove 331 is smaller than the inner diameter of the limiting groove 332. The pin 4 includes an upper pin 44, and the outer periphery of the upper pin adapter 42 is provided with a groove 421 that is recessed into the pin 4. The upper pin 44 is limited by a limiting retaining ring 5 between the limiting groove 332 and the groove 421. The adapter 42 of the upper pin 44 is inserted into the mounting groove 331 and rotatably connected to the upper hinge 30. The fixing part 41 of the upper pin 44 is inserted into the cylindrical groove 251 at the top of the edge trim 25 and fixedly connected to the edge trim 25, thereby rotatably connecting the edge trim 25 to the upper hinge 30.

[0062] The top and bottom hinges 3 also include a lower hinge 37, and the pin 4 also includes a lower pin 45. The adapter part 42 of the lower pin 45 is inserted into the mounting groove 331 of the lower hinge 37 and is rotatably connected to the lower hinge 37. The fixing part 41 of the lower pin 45 is inserted into the cylindrical groove 251 at the bottom of the edge trim 25 and is fixedly connected to the edge trim 25, thereby making the edge trim 25 rotatably connected to the lower hinge 37.

[0063] When the cabinet is closed, the upper horizontal frame 21 is attached to the top panel 11, and the lower horizontal frame 23 is attached to the bottom panel 13. When the cabinet is open, the door frame 2 and the upper pin 44 and the lower pin 45 rotate around the central axis of the pin 4. The maximum angle between the upper horizontal frame 21 and the top panel 11 is greater than 180 degrees, and the maximum angle between the lower horizontal frame 23 and the bottom panel 13 is greater than 180 degrees.

[0064] Reference Figure 1 This embodiment provides a cabinet with a large-angle opening and closing device, including: cabinet body 1, door frame 2, and opening and closing device 10 connecting cabinet body 1 and door frame 2; Figure 1 The example shown is based on the setting of two double door frames 2. Figure 1 With the cabinet closed, the upper horizontal frame 21 is attached to the top panel 11, and the lower horizontal frame 23 is attached to the bottom panel 13.

[0065] Reference Figure 2 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. Specifically, the side of the cabinet 1 away from the door frame 2 may also be provided with a back plate (not shown in the figure) to completely close the cabinet and reduce the accumulation of dust inside the cabinet. Figure 2 With the cabinet fully open, when the door frame 2 is fully open, the angle between the upper horizontal frame 21 and the top panel 11 is approximately 260 degrees, and the angle between the lower horizontal frame 23 and the bottom panel 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 side panel 12 or the right side panel 14, which does not occupy indoor activity space and is less likely to cause bumps.

[0066] Reference Figure 3 , Figure 4 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. Specifically, the door frame 2 may also have a door panel (not shown in the figure), which may be a wooden door panel or a glass core panel. Along the direction perpendicular to the plane of the door frame 2, the hinge vertical frame 22 is also provided with a trim strip 25 protruding from the hinge vertical frame 22. Along the extension 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 cylindrical grooves 251 that are recessed into the trim strip 25.

[0067] It should be noted that the end of the edge trim 25 closest to the top plate 11 is the top end, and the end of the edge trim 25 closest to the bottom plate 13 is the bottom end; Figure 4 The example only shows the cylindrical groove 251 at the top of the edge trim 25. The cylindrical groove 251 at the top of the edge trim 25 is recessed into the edge trim 25 along the direction from the upper horizontal frame 21 to the lower horizontal frame 23. Similarly, the cylindrical groove 251 at the bottom of the edge trim 25 is recessed into the edge trim 25 along the direction from the lower horizontal frame 23 to the upper horizontal frame 21.

[0068] It is understandable that, along the extension direction of the edge trim 25, the length of the edge trim 25 is less than the length of the hinge vertical frame 22, and the sum of the length of the edge trim 25 and the lengths of the upper hinge 30 and the lower hinge 37 is equal to the length of the hinge vertical frame 22. This avoids the top and bottom hinges 3 from extending beyond the edge of the door frame 2 after installation, thus saving materials and making it more aesthetically pleasing.

[0069] Reference Figure 5 , Figure 8 The opening and closing device 10 includes a hinge 3 and a pin 4 rotatably connected to the hinge 3; the opening and closing device has a simple structure and is easy to install. The 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, and the connecting strip 32 connects the fixed base 31 and the hinge base 33; the fixed base 31 is fixedly connected to the top plate 11 and the bottom plate 13; see reference. Figure 6 The hinged base 33 is provided with a mounting groove 331 corresponding to the cylindrical groove 251;

[0070] It should be noted that when the cabinet has two double-door frames 2, it needs to have four top and bottom hinges, namely the upper left hinge, the lower left hinge, the upper right hinge, and the lower right hinge. The upper left and upper right hinges are connected to the top panel 11, and the lower left and lower right hinges are connected to the bottom panel 13. The upper left and lower right hinges have the same shape, the lower left and upper right hinges have the same shape, and the upper right and upper left hinges are symmetrical in shape. Figure 5 The top left hinge is shown in the image for illustrative purposes. Figure 8 The lower left hinge is shown in the image for illustrative purposes.

[0071] Reference Figure 7 , Figure 9 The pin 4 includes a fixing part 41, a connecting part 42 and a separating ring 43 connecting the fixing part and the connecting part. The fixing part 41 has a plurality of barbs 411 protruding from the pin 4 on its outer periphery. The fixing part 41 is inserted into the cylindrical groove 251 and fixedly connected to the edge strip 25. The connecting part 42 is inserted into the mounting groove 331 and rotatably connected to the hinge base 33, so that the edge strip 25 is rotatably connected to the hinge base 33.

[0072] It should be noted that the fixing part 41 of the pin 4 is inserted into the cylindrical groove 251 and fixedly connected to the edge strip 25, so that the door frame 2 and the pin 4 are connected as a whole and rotate. The outer periphery of the fixing part 41 is provided with multiple barbs 411 protruding from the pin 4, which can further prevent the relative position of the edge strip 25 and the pin 4 from sliding. The adapter part 42 of the pin 4 is inserted into the mounting groove 331 and rotatably connected to the hinge base 33. Specifically, the outer periphery of the adapter part 42 is smooth, and the adapter part 42 and the hinge base 33 can be further lubricated with oil or grease to reduce friction.

[0073] Understandably, in existing technologies using hinges to connect door frames and cabinets, the hinges are fixed to the door frame. When the door frame is opened, the hinges rotate together with the door frame, limiting the opening angle of the door frame. In this embodiment, when the door frame 2 is rotated, the top and bottom hinges 3 are fixed to the top plate 11 and bottom plate 13 and remain stationary. What actually rotates is the door frame 2 and the pin 4. The door frame 2 and the pin 4 rotate together within the hinge base 33 about the central axis of the pin. The rotation of the door frame 2 is unrestricted and unobstructed, so the opening angle of the door frame 2 is increased. (Refer to the attached diagram.) Figure 2 When door frame 2 is fully open, the opening angle of the door frame is approximately 260 degrees.

[0074] Reference Figures 5-7 , Figure 5 The opening and closing device 10 shown includes an upper hinge 30 and an upper pin 44 rotatably connected to the upper hinge 30; the mounting groove 331 of the upper hinge 30 passes through the hinge base 33, and the top of the hinge base 33 is also provided with a limiting groove 332 connected to the mounting groove 331, the inner diameter of the mounting groove 331 being smaller than the inner diameter of the limiting groove 332; the pin 4 includes the upper pin 44, see reference. Figure 7 The outer periphery of the upper pin 44 adapter part 42 is provided with a groove 421 that is recessed into the pin 4. The upper pin 44 is limited by a limiting retaining ring 5 between the limiting groove 332 and the groove 421. The adapter part 42 of the upper pin 44 is inserted into the mounting groove 331 and rotatably connected to the upper hinge 30. The fixing part 41 of the upper pin 44 is inserted into the cylindrical groove 251 at the top of the edge trim 25 and fixedly connected to the edge trim 25, thereby rotatably connecting the edge trim 25 to the upper hinge 30.

[0075] It should be noted that in current technology, the upper hinge only serves a limiting function, and the weight of the door frame rests on the lower hinge. If the lower hinge becomes loose, the door frame and the upper pin can easily detach from the upper hinge, causing the door panel to fall and posing a safety hazard. In this embodiment, a limiting groove 332 is also provided within the hinge base 33 of the upper hinge 30. The inner diameter of the limiting groove 332 is larger than the inner diameter of the mounting groove 331. For details, refer to... Figure 6 The limiting groove 332 and the mounting groove 331 are connected in a T-shape. The limiting retaining ring 5 is stuck in the limiting groove 332 and will not slide out of the mounting groove 331, thus limiting the upper pin 44. Specifically, along the extension direction of the upper pin 44, the length of the slot 421 is greater than the thickness of the limiting retaining ring 5, leaving space for the door panel to sink to avoid the upper pin 44 directly rubbing against the limiting retaining ring 5. When the lower hinge 37 is severely loose, the upper pin 44 sinks together with the door frame 2. At this time, the top of the upper pin 44 contacts and rubs against the limiting retaining ring 5, generating noise, prompting the user to report the problem in time.

[0076] It is understood that in this embodiment, a limiting groove 332 is also provided in the hinge base 33 of the upper hinge 30, and a retaining groove 421 recessed into the pin 4 is provided on the outer periphery of the pin 4 adapter 42. By setting a limiting retaining ring 5 between the limiting groove 332 and the retaining groove 421, the upper pin 44 is limited, thus avoiding the problem of the upper pin 44 falling off the upper hinge 30 due to the loosening of the lower hinge 37.

[0077] Reference Figures 8-10 , Figure 8 The opening and closing device 10 shown includes a lower hinge 37 and a lower pin 45 rotatably connected to the lower hinge 37; the top and bottom hinges 3 also include a lower hinge 37, and the pin 4 also includes a lower pin 45. The adapter part 42 of the lower pin 45 is inserted into the mounting groove 331 of the lower hinge 37 and rotatably connected to the lower hinge 37. The fixing part 41 of the lower pin 45 is inserted into the cylindrical groove 251 at the bottom of the edge trim 25 and fixedly connected to the edge trim 25, thereby rotatably connecting the edge trim 25 and the lower hinge 37.

[0078] Understandably, the mounting groove 331 of the lower hinge 37 does not penetrate the hinge base 33. The adapter part 42 of the lower pin 45 is inserted into the mounting groove 331 of the lower hinge 37 and rotatably connected to the lower hinge 37. The fixing part 41 of the lower pin 45 is inserted into the cylindrical groove 251 at the bottom of the edge trim 25 and connected to the edge trim 25 as a whole. When the door frame rotates, the adapter part 42 rotates in the mounting groove 331. The adapter part 42 and the mounting groove 331 can also further reduce friction through oil lubrication or grease lubrication.

[0079] The cabinet with a large-angle opening and closing device provided in this embodiment includes: a cabinet body 1, a door frame 2, and an opening and closing device 10 connecting the cabinet body 1 and the door frame 2; the opening and closing device 10 includes a top and bottom hinge 3 and a pin 4 rotatably connected to the top and bottom hinge 3. In the closed state, the upper horizontal frame 21 is attached to the top plate 11, and the lower horizontal frame 23 is attached to the bottom plate 13; in the open state, the top and bottom hinge 3 is fixed to the cabinet body 1, and the door frame 2 rotates with the upper pin 44 and the lower pin 45 about the central axis of the pin 4. The maximum angle between the upper horizontal frame 21 and the top plate 11 is greater than 180 degrees, and the maximum angle between the lower horizontal frame 23 and the bottom plate 13 is greater than 180 degrees. During the opening of the door frame 2, the top and bottom hinges 3 are fixed to the cabinet 1, and only the door frame 2 and the pin 4 rotate without any obstruction or restriction, which increases the opening angle of the door frame 2. By setting a limiting ring 5 between the upper pin 44 and the upper hinge 30 to limit the upper pin 44, the problem of the door panel falling off is avoided when the lower hinge 37 becomes loose and the door frame 2 and the upper pin 44 detach from the upper hinge 30.

[0080] Optional, continue to refer to Figure 8 , Figure 9 A steel ball 6 is also provided between the mounting groove 331 of the lower hinge 37 and the lower pin 45.

[0081] It should be noted that in the existing technology, the connecting part of the lower pin falls directly into the mounting groove of the lower hinge. The separator ring on the pin contacts the top of the lower hinge to limit the pin. When the door frame is rotated, the separator ring and the lower hinge rub against each other, which will produce a harsh friction sound. After long-term friction, burrs will be generated, causing the door panel to rotate unevenly.

[0082] It is understood that in this embodiment, a steel ball 6 is also provided between the mounting groove 331 of the lower hinge 37 and the lower pin 45. The lower pin 45 rests on the steel ball 6, and there is no need to limit the lower pin 45 by the separator ring 43. The steel ball 6 has high hardness and high smoothness. After filling the mounting groove 331 with an appropriate amount of solid lubricating oil, the rotational friction between the lower pin 45 and the steel ball 6 produces almost no friction noise.

[0083] Optional, continue to refer to Figure 9 The end of the lower pin 45 adapter 42 away from the fixing part 41 is an arc surface.

[0084] Understandably, the end of the lower pin 45 adapter 42 away from the fixing part 41, that is, the side of the adapter 42 that contacts the steel ball 6, is an arc surface, so that the lower pin 45 fits snugly with the steel ball and rotates more smoothly.

[0085] Optional, continue to refer to Figure 5The fixed base 31 includes a protrusion 34 protruding from the fixed base 33 on the side away from the hinge base 33. The protrusion 34 is provided with at least one through hole 35. The protrusion 34 is fixedly connected to the top plate 11 and the bottom plate 13 by a screw (not shown in the figure) passing through the through hole 35. The fixed base 31 is also provided with a hollow area 36. The projection of the hollow area 36 in the direction from the hinge base 33 to the fixed base 31 at least partially coincides with the protrusion 34.

[0086] It is understandable that the fixed base 31 is fixedly connected to the top plate 11 and the bottom plate 13; specifically, when the fixed base 31 is connected to the top plate 11 and the bottom plate 13 by screws, Figure 5 The fixed base 31 of the fixed connection is shown to include a protrusion 34 protruding from the fixed base 31 on the side away from the hinge base 33, and the protrusion 34 is provided with at least one through hole 35; Figure 5 The illustration only shows two through holes on the protrusion 34; the number and shape of the through holes are not specifically limited here. (Refer to...) Figure 1 , Figure 3 When the door panel 2 is closed, the hinge vertical frame 22 is embedded in the top and bottom hinges 3; when the protrusion 34 is connected to the top plate 11 and bottom plate 13 by screws, the screws are placed in the hollow area 36, ​​so that the hinge vertical frame 22 will not collide with the screws, thus avoiding the screws scratching the hinge vertical frame 22.

[0087] Optional, continue to refer to Figure 4 In the direction perpendicular to the plane of the door frame 2, the vertical frame of the handle 24 is provided with an L-shaped handle strip 26 protruding from the vertical frame of the handle 24.

[0088] Understandably, the vertical frame 24 of the handle has an L-shaped handle strip 26 protruding from it, giving it a built-in handle groove. When a separate handle is installed on the cabinet, its thickness is greater than that of the edge strip 25. When multiple cabinets are installed side by side and the doors open 180 degrees, the additional handle will collide with the core panel of the adjacent cabinet. The built-in handle groove on the vertical frame 24 eliminates the need for a separate handle, preventing collisions with the core panel and thus avoiding breakage of the glass core panel.

[0089] Example 2:

[0090] Reference Figures 1-4 , Figures 8-12 The present invention provides a cabinet with a large-angle opening and closing device 10, comprising: a cabinet body 1, a door frame 2, and an opening and closing device 10 connecting the cabinet body 1 and the door frame 2;

[0091] 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;

[0092] 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. Along the direction perpendicular to the plane of the door frame 2, the hinge vertical frame 22 is also provided with a trim strip 25 protruding from the hinge vertical frame 22. Along the extension 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 cylindrical grooves 251 that are recessed into the trim strip 25.

[0093] The opening and closing device 10 includes a hinge 3 and a pin 4 connected to the hinge 3;

[0094] The 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, and the connecting strip 32 connects the fixed base 31 and the hinge base 33. The fixed base 31 is fixedly connected to the top plate 11 and the bottom plate 13. The hinge base 33 is provided with an installation groove 331 corresponding to the columnar groove 251.

[0095] The pin 4 includes a fixing part 41, a connecting part 42 and a separating ring 43 connecting the fixing part 41 and the connecting part 42, which are arranged opposite to each other. The pin 4 includes an upper pin 44. The fixing part 41 of the upper pin 44 has a threaded structure on its outer periphery. The hinge 3 includes an upper hinge 30. The mounting groove 331 of the upper hinge 30 has a corresponding threaded groove on its inner periphery. The fixing part 41 is screwed into the mounting groove 331 and fixedly connected to the hinge base 33. The connecting part 42 is inserted into the cylindrical groove 251 and rotatably connected to the edge strip 25, so that the door frame 2 and the upper hinge 30 are rotatably connected.

[0096] The pin 4 also includes a lower pin 45. The fixing part 41 of the lower pin 45 has multiple barbs 411 protruding from the pin 4 on its outer periphery. The hinge 3 also includes a lower hinge 37. The fixing part 41 is inserted into the cylindrical groove 251 of the lower hinge 37 and fixedly connected to the edge strip 25. The connecting part 42 is inserted into the mounting groove 331 and rotatably connected to the hinge base 33, so that the door frame 2 and the lower hinge 37 are rotatably connected.

[0097] When the cabinet is closed, the upper horizontal frame 21 is attached to the top panel 11, and the lower horizontal frame 23 is attached to the bottom panel 13. When the cabinet is open, the upper pin 44 is fixed to the upper hinge 30, and the door frame 2 and the lower pin 45 rotate around the central axis of the pin 4. The maximum angle between the upper horizontal frame 21 and the top panel 11 is greater than 180 degrees, and the maximum angle between the lower horizontal frame 23 and the bottom panel 13 is greater than 180 degrees.

[0098] Reference Figure 1 This embodiment provides a cabinet with a large-angle opening and closing device, including: cabinet body 1, door frame 2, and opening and closing device 10 connecting cabinet body 1 and door frame 2; Figure 1 The example shown is based on the setting of two double door frames 2. Figure 1With the cabinet closed, the upper horizontal frame 21 is attached to the top panel 11, and the lower horizontal frame 23 is attached to the bottom panel 13.

[0099] Reference Figure 2 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. Specifically, the side of the cabinet 1 away from the door frame 2 may also be provided with a back plate (not shown in the figure) to completely close the cabinet and reduce the accumulation of dust inside the cabinet. Figure 2 With the cabinet fully open, when the door frame 2 is fully open, the angle between the upper horizontal frame 21 and the top panel 11 is approximately 260 degrees, and the angle between the lower horizontal frame 23 and the bottom panel 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 side panel 12 or the right side panel 14, which does not occupy indoor activity space and is less likely to cause bumps.

[0100] Reference Figure 3 , Figure 4 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. Specifically, the door frame 2 may also have a door panel (not shown in the figure), which may be a wooden door panel or a glass core panel. Along the direction perpendicular to the plane of the door frame 2, the hinge vertical frame 22 is also provided with a trim strip 25 protruding from the hinge vertical frame 22. Along the extension 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 cylindrical grooves 251 that are recessed into the trim strip 25.

[0101] It should be noted that the end of the edge trim 25 closest to the top plate 11 is the top end, and the end of the edge trim 25 closest to the bottom plate 13 is the bottom end; Figure 4 The example only shows the cylindrical groove 251 at the top of the edge trim 25. The cylindrical groove 251 at the top of the edge trim 25 is recessed into the edge trim 25 along the direction from the upper horizontal frame 21 to the lower horizontal frame 23. Similarly, the cylindrical groove 251 at the bottom of the edge trim 25 is recessed into the edge trim 25 along the direction from the lower horizontal frame 23 to the upper horizontal frame 21.

[0102] It is understandable that, along the extension direction of the edge trim 25, the length of the edge trim 25 is less than the length of the hinge vertical frame 22, and the sum of the length of the edge trim 25 and the lengths of the upper hinge 30 and the lower hinge 37 is equal to the length of the hinge vertical frame 22. This avoids the top and bottom hinges 3 from extending beyond the edge of the door frame 2 after installation, thus saving materials and making it more aesthetically pleasing.

[0103] Reference Figure 8 , Figure 11The opening and closing device 10 includes a hinge 3 and a pin 4 connected to the hinge 3; the opening and closing device has a simple structure and is easy to install. The 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, and the connecting strip 32 connects the fixed base 31 and the hinge base 33; the fixed base 31 is fixedly connected to the top plate 11 and the bottom plate 13; see reference. Figure 9 , Figure 12 The hinged base 33 is provided with a mounting groove 331 corresponding to the cylindrical groove 251. Specifically, Figure 9 The mounting groove 331 of the lower hinge 37 has a smooth inner periphery; Figure 9 The mounting groove 331 of the upper hinge 30 has a threaded groove on its inner periphery.

[0104] It should be noted that when the cabinet has two double-door frames 2, it needs to have four top and bottom hinges, namely the upper left hinge, the lower left hinge, the upper right hinge, and the lower right hinge. The upper left and upper right hinges are connected to the top panel 11, and the lower left and lower right hinges are connected to the bottom panel 13. The upper left and lower right hinges have the same shape, the lower left and upper right hinges have the same shape, and the upper right and upper left hinges are symmetrical in shape. Figure 8 The lower left hinge is shown in the image for illustrative purposes. Figure 12 The top left hinge is shown in the image for illustrative purposes.

[0105] Reference Figure 10 , Figure 12 The pin 4 includes a fixing part 41, a connecting part 42, and a separating ring 43 connecting the fixing part 41 and the connecting part 42, which are disposed opposite to each other. (See reference...) Figure 12 The pin 4 includes an upper pin 44, and the fixing part 41 of the upper pin 44 has a threaded structure on its outer periphery. The hinge 3 includes an upper hinge 30, and the mounting groove 331 of the upper hinge 30 has a corresponding threaded groove on its inner periphery. The fixing part 41 is screwed into the mounting groove 331 and fixedly connected to the hinge base 33. The adapter part 42 is inserted into the cylindrical groove 251 and rotatably connected to the edge strip 25, so that the door frame 2 and the upper hinge 30 are rotatably connected.

[0106] It is understandable that the fixing part 41 of the upper pin 44 is screwed into the mounting groove 331 and fixedly connected to the hinge base 33 of the upper hinge 30; the upper hinge 30 is fixedly connected to the top plate 11. At the same time, the upper pin is fixedly connected to the upper hinge. When the door frame 2 rotates, only the upper end of the edge strip 25 rotates around the upper pin 44. The rotation of the door frame 2 is unimpeded, so the opening and closing angle of the door frame 2 increases.

[0107] Reference Figures 8-10 , Figure 8 The opening and closing device 10 shown includes a lower hinge 37 and a lower pin 45 rotatably connected to the lower hinge 37; see reference Figure 10The fixing part 41 of the lower pin 45 has multiple barbs 411 protruding from the pin 4 on its outer periphery. The fixing part 41 is inserted into the cylindrical groove 251 of the lower hinge 37 and fixedly connected to the edge strip 25. The adapter part 42 is inserted into the mounting groove 331 and rotatably connected to the hinge base 33, so that the door frame 2 and the lower hinge 37 are rotatably connected.

[0108] It should be noted that the fixing part 41 of the lower pin 45 is inserted into the cylindrical groove 251 and fixedly connected to the edge strip 25, so that the door frame 2 and the lower pin 45 are connected as a whole and rotate. The outer periphery of the fixing part 41 is provided with multiple barbs 411 protruding from the lower pin 45, which can further prevent the relative position of the edge strip 25 and the lower pin 45 from sliding. The adapter part 42 of the lower pin 45 is inserted into the mounting groove 331 and rotatably connected to the hinge base 33. Specifically, the outer periphery of the adapter part 42 is smooth, and the adapter part 42 and the hinge base 33 can be further lubricated with oil or grease to reduce friction.

[0109] The cabinet with a large-angle opening and closing device provided in this embodiment includes: a cabinet body 1, a door frame 2, and an opening and closing device 10 connecting the cabinet body 1 and the door frame 2; the opening and closing device 10 includes a top and bottom hinge 3 and a pin 4 connected to the top and bottom hinge 3. In the closed state, the upper horizontal frame 21 is attached to the top plate 11, and the lower horizontal frame 23 is attached to the bottom plate 13; in the open state, the top and bottom hinge 3 is fixed to the cabinet body, and the door frame 2 and the lower pin 45 rotate around the central axis of the pin 4. The maximum angle between the upper horizontal frame 21 and the top plate 11 is greater than 180 degrees, and the maximum angle between the lower horizontal frame 23 and the bottom plate 13 is greater than 180 degrees. During the opening of door frame 2, the top and bottom hinges 3 and cabinet 1 remain fixed, and the upper pin 44 is fixed to the upper hinge 30. Only door frame 2 and lower pin 45 rotate without any obstruction or restriction, which increases the opening angle of door frame 2. When door frame 2 is open, there are no exposed hinges, which is clean, simple and safe. Door frame 2 can remain open for a long time without affecting the indoor activity space or compromising the overall aesthetic requirements of the interior.

[0110] Optionally, a steel ball is also provided between the mounting groove 331 of the lower hinge 37 and the lower pin 45.

[0111] It should be noted that in the existing technology, the connecting part of the lower pin falls directly into the mounting groove of the lower hinge. The separator ring on the pin contacts the top of the lower hinge to limit the pin. When the door frame is rotated, the separator ring and the lower hinge rub against each other, which will produce a harsh friction sound. After long-term friction, burrs will be generated, causing the door panel to rotate unevenly.

[0112] It is understood that in this embodiment, a steel ball 6 is also provided between the mounting groove 331 of the lower hinge 37 and the lower pin 45. The lower pin 45 rests on the steel ball 6, and there is no need for the lower pin 45 to be limited by the separator ring 43. The steel ball 6 has high hardness and high smoothness. After filling the mounting groove 331 with an appropriate amount of solid lubricating oil, the rotational friction between the lower pin 45 and the steel ball 6 produces almost no friction noise.

[0113] Optionally, the end of the lower pin 45 adapter 42 away from the fixing part 41 is curved.

[0114] Understandably, the end of the lower pin 45 adapter 42 away from the fixing part 41, that is, the side of the adapter 42 that contacts the steel ball 6, is an arc surface, so that the lower pin 45 fits snugly with the steel ball and rotates more smoothly.

[0115] Optionally, 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. The protrusion 34 is fixedly connected to the top plate 11 and the bottom plate 13 by screws passing through the through hole 35. The fixed base 31 is also provided with a hollow area 36. The projection of the hollow area 36 along the direction from the hinge base 33 to the fixed base 31 at least partially coincides with the protrusion 34.

[0116] It is understandable that the fixed base 31 is fixedly connected to the top plate 11 and the bottom plate 13; specifically, when the fixed base 31 is connected to the top plate 11 and the bottom plate 13 by screws, Figure 5 The fixed base 31 of the fixed connection is shown to include a protrusion 34 protruding from the fixed base 31 on the side away from the hinge base 33, and the protrusion 34 is provided with at least one through hole 35; Figure 5 The illustration only shows two through holes on the protrusion 34; the number and shape of the through holes are not specifically limited here. (Refer to...) Figure 1 , Figure 3 When the door panel 2 is closed, the hinge vertical frame 22 is embedded in the top and bottom hinges 3; when the protrusion 34 is connected to the top plate 11 and bottom plate 13 by screws, the screws are placed in the hollow area 36, ​​so that the hinge vertical frame 22 will not collide with the screws, thus avoiding the screws scratching the hinge vertical frame 22.

[0117] Optionally, in a direction perpendicular to the plane of the door frame 2, the vertical frame 24 of the handle is provided with an L-shaped handle strip 26 protruding from the vertical frame 24 of the handle.

[0118] Understandably, the vertical frame 24 of the handle has an L-shaped handle strip 26 protruding from it, giving it a built-in handle groove. When a separate handle is installed on the cabinet, its thickness is greater than that of the edge strip 25. When multiple cabinets are installed side by side and the doors open 180 degrees, the additional handle will collide with the core panel of the adjacent cabinet. The built-in handle groove on the vertical frame 24 eliminates the need for a separate handle, preventing collisions with the core panel and thus avoiding breakage of the glass core panel.

[0119] As can be seen from the above embodiments, the cabinet with a large-angle opening and closing device provided by the present invention achieves at least the following beneficial effects:

[0120] This invention discloses a cabinet with a large-angle opening and closing device, comprising: a cabinet body, a door frame, and an opening and closing device connecting the cabinet body and the door frame; the opening and closing device includes top and bottom hinges and a pin rotatably connected to the top and bottom hinges. The pin includes a fixed part, a connecting part, and a separating ring connecting the fixed part and the connecting part. The fixed part is fixedly connected to the door frame, and the connecting part is rotatably connected to the top and bottom hinges. The outer periphery of the fixed part is provided with multiple barbs protruding from the pin, which can further prevent the relative position of the edge strip of the door frame and the pin from sliding. By setting a limiting ring between the upper pin and the upper hinge to limit the upper pin, the problem of the door panel falling off when the lower hinge becomes loose is avoided. When the cabinet is closed, the upper horizontal edge of the door frame is flush with the top panel of the cabinet, and the lower horizontal edge is flush with the bottom panel. When the cabinet is open, the hinges are fixed to the cabinet, and the door frame rotates around the central axis of the upper and lower pins. The maximum angle between the upper horizontal edge and the top panel is greater than 180 degrees, and the maximum angle between the lower horizontal edge and the bottom panel is greater than [missing value]. During the opening process, only the door frame and the pins rotate without any obstruction or restriction, increasing the opening angle of the door frame.

[0121] This invention also discloses a cabinet with a large-angle opening and closing device, comprising: a cabinet body, a door frame, and an opening and closing device connecting the cabinet body and the door frame; the opening and closing device includes a hinge and a pin rotatably connected to the hinge. The pin includes a fixing part, a connecting part, and a separating ring connecting the fixing part and the connecting part. The fixing part of the upper pin has a threaded structure on its outer periphery, and the mounting groove of the upper hinge has a corresponding threaded groove on its inner periphery. The fixing part is screwed into the mounting groove and fixedly connected to the upper hinge, and the door frame is rotatably connected to the rotating part of the upper pin; the connecting part of the lower pin is rotatably connected to the lower hinge, and the fixing part of the lower pin is fixedly connected to the door frame. The fixing part has multiple barbs protruding from the pin on its outer periphery, which can further prevent the relative position of the edge strip of the door frame and the pin from sliding. When the cabinet is closed, the upper horizontal edge of the door frame is flush with the top panel of the cabinet, and the lower horizontal edge is flush with the bottom panel. When the cabinet is open, the top and bottom hinges are fixed to the cabinet, the upper pin is fixed to the upper hinge, and the door frame and the lower pin rotate around the central axis of the pin. The maximum angle between the upper horizontal edge and the top panel is greater than 180 degrees, and the maximum angle between the lower horizontal edge and the bottom panel is greater than [missing value]. During the opening process, only the door frame and the lower pin rotate without any obstruction or restriction, increasing the opening angle of the door frame.

[0122] While specific embodiments of the invention have been described in detail by way of examples, those skilled in the art should understand that the examples are for illustrative purposes only and not intended to limit the scope of the invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims

1. A cabinet with a large-angle opening and closing device, characterized in that, include: Cabinet body, door frame, and opening and closing device connecting the cabinet body and the door frame; The cabinet includes a top panel, a left side panel, a bottom panel, and a right side panel connected in sequence; 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 a 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, and both ends of the trim strip are provided with cylindrical grooves recessed into the trim strip. The opening and closing device includes a hinge and a pin rotatably connected to the hinge. The hinge includes a fixed base, a connecting strip, and a hinge base connected in sequence. The fixed base and the hinge base are arranged parallel to each other. The connecting strip connects the fixed base and the hinge base. The fixed base is fixedly connected to the top plate and the bottom plate. The hinge base is provided with an installation groove corresponding to the cylindrical groove. The pin includes a fixing part, a connecting part, and a separating ring connecting the fixing part and the connecting part. The outer periphery of the fixing part is provided with a plurality of barbs protruding from the pin. The fixing part is inserted into the cylindrical groove and fixedly connected to the edge strip. The connecting part is inserted into the mounting groove and rotatably connected to the hinge base, so that the edge strip is rotatably connected to the hinge base. The hinge includes an upper hinge, the mounting groove of which penetrates the hinge base. The top of the hinge base is also provided with a limiting groove connected to the mounting groove, and the inner diameter of the mounting groove is smaller than the inner diameter of the limiting groove. The pin includes an upper pin, and the outer periphery of the upper pin's transition part is provided with a groove that is recessed into the pin. The upper pin is limited by a limiting retaining ring set in the limiting groove and the groove. Along the extension direction of the upper pin, the length of the groove is greater than the thickness of the limiting retaining ring, leaving space for the door panel to sink to avoid the upper pin directly rubbing against the limiting retaining ring. The transition part of the upper pin is inserted into the mounting groove and rotatably connected to the upper hinge, and the fixing part of the upper pin is inserted into the cylindrical groove at the top of the edge trim and fixedly connected to the edge trim, thereby rotatably connecting the edge trim to the upper hinge. The hinge also includes a lower hinge, and the pin also includes a lower pin. The adapter of the lower pin is inserted into the mounting groove of the lower hinge and rotatably connected to the lower hinge. The fixing part of the lower pin is inserted into the cylindrical groove at the bottom of the edge trim and fixedly connected to the edge trim, thereby rotatably connecting the edge trim to the lower hinge. A steel ball is also provided between the mounting groove of the lower hinge and the lower pin. The end of the adapter of the lower pin away from the fixing part is an arc surface. When the cabinet is closed, the upper horizontal frame is attached to the top plate, and the lower horizontal frame is attached to the bottom plate. When the cabinet is open, the door frame, the upper pin, and the lower pin rotate around the central axis of the pin. 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 with a large-angle opening and closing device according to claim 1, characterized in that, The fixed base includes a protrusion on the side away from the hinge base, the protrusion having at least one through hole, and a screw passing through the through hole to fix the protrusion to the top plate and the bottom plate; the fixed base also has a hollow area, the projection of the hollow area along the direction from the hinge base to the fixed base at least partially coinciding with the protrusion.

3. The cabinet with a large-angle opening and closing device according to claim 1, characterized in that, In a direction perpendicular to the plane of the door frame, the vertical edge of the handle is provided with an L-shaped handle strip that protrudes from the vertical edge of the handle.

Images