CN219773919U - Cabinet with large-angle opening and closing device - Google Patents

Abstract

The utility model discloses a cabinet with a large-angle opening and closing device, which comprises: the cabinet body, the door frame and the opening and closing device for connecting the cabinet body and the door frame; the opening and closing device comprises an upper hinge and a lower hinge and a pin connected with the upper hinge in a rotating way. The fixed part of pin is connected with door frame, and the fixed part periphery is equipped with a plurality of barbs that protrude in the pin, prevents that the relative position of door frame and pin from sliding. Limiting check rings are arranged between the upper hinges to limit the upper pins, so that the door frame is prevented from falling off from the upper hinges when the lower hinges are loose. When the cabinet is closed, the upper transverse frame of the door frame is attached to the top plate of the cabinet body, and the lower transverse frame is attached to the bottom plate; when the cabinet is opened, the top-bottom hinge is fixed with the cabinet body, the door frame rotates with the central shaft of the upper pin and the lower pin as the shaft, the maximum included angle between the upper transverse frame and the top plate is larger than 180 degrees, and the maximum included angle between the lower transverse frame and the bottom plate is larger than the maximum included angle. In the opening process of the door frame, only the door frame and the pin rotate without any limitation, so that the opening angle of the door frame is increased.

Description

Cabinet with large-angle opening and closing device

Technical Field

The utility model relates to the technical field of furniture, in particular to a cabinet with a large-angle opening and closing device.

Background

Currently, conventional hinges for aluminum framed door fittings are limited by the opening angle, typically a maximum opening angle of 120 degrees. The prior art (CN 216240203U) discloses a vertical hinged door hinge capable of being opened at 180 degrees, but the vertical hinged door occupies an indoor movable space in a door opening state no matter the vertical hinged door hinge is opened at 120 degrees or at 180 degrees, and the vertical hinged door is easy to collide with a door panel after being opened for a long time; in addition, the hidden danger of the grip exists when the hinge is exposed, which is very dangerous for children.

When the ground hinge is assembled with the heavy aluminum frame door, the large-breadth door plate is large in size and heavy, the upper hinge is only responsible for limiting the door plate, no bearing effect exists, all weight of the door plate falls on the lower hinge, if the lower hinge is loose and sinks due to the weight of the door plate, and then the pin on the door plate is separated from the upper hinge, so that the door plate falls off and hurts people easily.

Therefore, it is desirable to provide a cabinet with a large-angle opening and closing device that can limit the pin connecting the hinge and the door panel.

Disclosure of Invention

In view of this, the present utility model provides a cabinet having a large-angle opening and closing device, comprising: the cabinet comprises a cabinet body, a door frame and an opening and closing device connected with 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 which are sequentially connected;

the door frame comprises an upper transverse frame, a hinge vertical frame, a lower transverse frame and a handle vertical frame which are connected in sequence; the hinge vertical frame is also provided with a receiving strip protruding out of the hinge vertical frame along the direction perpendicular to the plane of the door frame; the length of the edge folding strip is smaller than the length of the vertical frame of the hinge along the extending direction of the edge folding strip, and cylindrical grooves which are sunken towards the inside of the edge folding strip are formed at two ends of the edge folding strip;

the opening and closing device comprises a top-bottom hinge and a pin which is rotationally connected with the top-bottom hinge;

the top-bottom hinge comprises a fixed base, a connecting strip and a hinged base which are sequentially connected, wherein the fixed base and the hinged base are arranged in parallel, and the connecting strip is connected with the fixed base and the hinged base; the fixed base is fixedly connected with the top plate and the bottom plate; the hinge base is provided with a mounting groove corresponding to the cylindrical groove;

the pin comprises a fixed part, a switching part and a separation ring, wherein the fixed part and the switching part are oppositely arranged, the outer periphery of the fixed part is provided with a plurality of barbs protruding out of the pin, the fixed part is inserted into the cylindrical groove to be fixedly connected with the edge folding strip, and the switching part is inserted into the mounting groove to be rotationally connected with the hinge base so as to rotationally connect the edge folding strip with the hinge base;

The top-bottom hinge comprises an upper hinge, wherein a mounting groove of the upper hinge penetrates through the hinge base, a limiting groove connected with the mounting groove is further formed in the top of the hinge base, and the inner diameter of the mounting groove is smaller than that of the limiting groove; the pin comprises an upper pin, a circle of clamping grooves which are recessed towards the inside of the pin are formed in the outer periphery of the upper pin switching part, and the upper pin is limited by arranging limiting check rings between the limiting grooves and the clamping grooves; the switching part of the upper pin is inserted into the mounting groove to be rotationally connected with the upper hinge, and the fixing part of the upper pin is inserted into the cylindrical groove at the top of the edge folding strip to be fixedly connected with the edge folding strip, so that the edge folding strip is rotationally connected with the upper hinge;

the top-bottom hinge further comprises a lower hinge, the pin also comprises a lower pin, the switching part of the lower pin is inserted into the mounting groove of the lower hinge to be rotationally connected with the lower hinge, and the fixing part of the lower pin is inserted into the cylindrical groove at the bottom of the edge folding strip to be fixedly connected with the edge folding strip, so that the edge folding strip is rotationally connected with the lower hinge;

the upper transverse frame is attached to the top plate, and the lower transverse frame is attached to the bottom plate when the cabinet is in a closed state; under the open state of the cabinet, the door frame rotates with the upper pin and the lower pin by taking the central shaft of the pin as an axis, the maximum included angle between the upper transverse frame and the top plate is larger than 180 degrees, and the maximum included angle between the lower transverse frame and the bottom plate is larger than 180 degrees.

Optionally, a steel ball is further arranged between the mounting groove of the lower hinge and the lower pin.

Optionally, one end of the lower pin adapting part far away from the fixing part is an arc surface.

Optionally, a side of the fixed base away from the hinge base includes a protruding portion protruding from the fixed base, at least one through hole is provided on the protruding portion, and a screw passes through the through hole to fixedly connect the protruding portion with the top plate and the bottom plate; the fixing base is also provided with a hollowed-out area, and the projection of the hollowed-out area along the direction of the hinge base pointing to the fixing base is at least partially overlapped with the protruding part.

Optionally, in a direction perpendicular to a plane where the door frame is located, the handle vertical frame is provided with an L-shaped handle bar protruding out of the handle vertical frame.

The utility model also provides a cabinet with the large-angle opening and closing device, which comprises: the cabinet comprises a cabinet body, a door frame and an opening and closing device connected with 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 which are sequentially connected;

the door frame comprises an upper transverse frame, a hinge vertical frame, a lower transverse frame and a handle vertical frame which are connected in sequence; the hinge vertical frame is also provided with a receiving strip protruding out of the hinge vertical frame along the direction perpendicular to the plane of the door frame; the length of the edge folding strip is smaller than the length of the vertical frame of the hinge along the extending direction of the edge folding strip, and cylindrical grooves which are sunken towards the inside of the edge folding strip are formed at two ends of the edge folding strip;

The opening and closing device comprises a top-bottom hinge and a pin connected with the top-bottom hinge;

the top-bottom hinge comprises a fixed base, a connecting strip and a hinged base which are sequentially connected, wherein the fixed base and the hinged base are arranged in parallel, and the connecting strip is connected with the fixed base and the hinged base; the fixed base is fixedly connected with the top plate and the bottom plate; the hinge base is provided with a mounting groove corresponding to the cylindrical groove;

the pin comprises a fixing part, a switching part and a spacer ring, wherein the fixing part and the switching part are oppositely arranged, the spacer ring is used for connecting the fixing part and the switching part, the pin comprises an upper pin, a thread structure is arranged on the outer periphery of the fixing part of the upper pin, the top-bottom hinge comprises an upper hinge, a corresponding thread groove is arranged on the inner periphery of a mounting groove of the upper hinge, the fixing part is screwed into the mounting groove to be fixedly connected with the hinged base, and the switching part is inserted into the cylindrical groove to be rotationally connected with the edge folding strip, so that the door frame is rotationally connected with the upper hinge;

the pin further comprises a lower pin, the outer periphery of the fixing part of the lower pin is provided with a plurality of barbs protruding out of the pin, the top-bottom hinge further comprises a lower hinge, the fixing part is inserted into a cylindrical groove of the lower hinge to be fixedly connected with the edge folding strip, the switching part is inserted into the mounting groove to be rotationally connected with the hinge base, so that the door frame is rotationally connected with the lower hinge, and steel balls are further arranged between the mounting groove of the lower hinge and the lower pin;

The upper transverse frame is attached to the top plate, and the lower transverse frame is attached to the bottom plate when the cabinet is in a closed state; the cabinet is in an open state, the upper pin is fixed with the upper hinge, the door frame and the lower pin rotate by taking the central shaft of the pin as an axis, the maximum included angle between the upper transverse frame and the top plate is larger than 180 degrees, and the maximum included angle between the lower transverse frame and the bottom plate is larger than 180 degrees.

Optionally, a steel ball is further arranged between the mounting groove of the lower hinge and the lower pin.

Optionally, one end of the lower pin adapting part far away from the fixing part is an arc surface.

Optionally, a side of the fixed base away from the hinge base includes a protruding portion protruding from the fixed base, at least one through hole is provided on the protruding portion, and a screw passes through the through hole to fixedly connect the protruding portion with the top plate and the bottom plate; the fixing base is also provided with a hollowed-out area, and the projection of the hollowed-out area along the direction of the hinge base pointing to the fixing base is at least partially overlapped with the protruding part.

Optionally, in a direction perpendicular to a plane where the door frame is located, the handle vertical frame is provided with an L-shaped handle bar protruding out of the handle vertical frame.

Compared with the prior art, the cabinet with the large-angle opening and closing device provided by the utility model has the advantages that at least the following effects are realized:

the utility model discloses a cabinet with a large-angle opening and closing device, which comprises: the cabinet body, the door frame and the opening and closing device for connecting the cabinet body and the door frame; the opening and closing device comprises an upper hinge and a lower hinge and a pin rotationally connected with the upper hinge and the lower hinge. The pin includes fixed part, switching portion and the spacer ring of connecting fixed part and switching portion that set up relatively, fixed part AND gate frame fixed connection, switching portion and world hinge rotation are connected, and fixed part periphery is equipped with a plurality of projections in the barb of pin, can further prevent the receipts limit strip of door frame and the relative position slip of pin. Through set up spacing retaining ring and carry out spacingly to last pin between last pin and last hinge, avoided down when the hinge is not hard up door frame and last pin break away from the problem that leads to the door plant to drop from last hinge. In the closed state of the cabinet, the upper transverse frame of the door frame is attached to the top plate of the cabinet body, and the lower transverse frame is attached to the bottom plate; under the open state of the cabinet, the top-bottom hinge is fixed with the cabinet body, the door frame rotates with the central shaft of the upper pin and the lower pin as the shaft, the maximum included angle between the upper transverse frame and the top plate is larger than 180 degrees, and the maximum included angle between the lower transverse frame and the bottom plate is larger than the degree. In the opening process of the door frame, only the door frame and the pin rotate without any shielding limitation, so that the opening angle of the door frame is increased.

The utility model also discloses a cabinet with the large-angle opening and closing device, which comprises: the cabinet body, the door frame and the opening and closing device for connecting the cabinet body and the door frame; the opening and closing device comprises an upper hinge and a lower hinge and a pin rotationally connected with the upper hinge and the lower hinge. The pin comprises a fixing part, a switching part and a separation ring for connecting the fixing part and the switching part, which are oppositely arranged. The outer periphery of the fixed part of the upper pin is provided with a thread structure, the inner periphery of the mounting groove of the upper hinge is provided with a corresponding thread groove, the fixed part is screwed into the mounting groove to be fixedly connected with the upper hinge, and the door frame is rotationally connected with the rotating part of the upper pin; the switching portion of lower pin rotates with lower hinge to be connected, and the fixed part and the door frame fixed connection of lower pin are equipped with a plurality of projections in the barb of pin, can further prevent the receipts limit strip of door frame and the relative position slip of pin. In the closed state of the cabinet, the upper transverse frame of the door frame is attached to the top plate of the cabinet body, and the lower transverse frame is attached to the bottom plate; under the open state of the cabinet, the top-bottom hinge is fixed with the cabinet body, the upper pin is fixed with the upper hinge, the door frame and the lower pin rotate by taking the central shaft of the pin as an axis, the maximum included angle between the upper transverse frame and the top plate is larger than 180 degrees, and the maximum included angle between the lower transverse frame and the bottom plate is larger than the degree. In the opening process of the door frame, only the door frame and the lower pin rotate without any shielding limitation, so that the opening angle of the door frame is increased.

Of course, it is not necessary for any one product embodying the utility model to achieve all of the technical effects described above at the same time.

Other features of the present utility model and its advantages will become apparent from the following detailed description of exemplary embodiments of the utility model, which proceeds with reference to the accompanying drawings.

Drawings

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

FIG. 1 is a schematic view of a cabinet with a large angle opening and closing device provided by the utility model;

FIG. 2 is another schematic view of a cabinet with a large angle opening and closing device provided by the utility model;

FIG. 3 is a schematic view of a door frame and a top-to-bottom hinge in a cabinet with a wide angle opening and closing device provided by the utility model;

FIG. 4 is a top view of a door frame in a cabinet having a large angle opening and closing device provided by the present utility model;

FIG. 5 is a schematic view of an opening and closing device in a cabinet with a large angle opening and closing device provided by the utility model;

FIG. 6 is a cross-sectional view of the opening and closing device A-A' of FIG. 5;

FIG. 7 is a schematic view of a pin in a cabinet with a large angle opening and closing device provided by the utility model;

FIG. 8 is another schematic view of an opening and closing device in a cabinet with a large angle opening and closing device provided by the utility model;

FIG. 9 is a cross-sectional view of the opening and closing device B-B' of FIG. 8;

FIG. 10 is another schematic view of a pin in a cabinet with a large angle opening and closing device provided by the utility model;

FIG. 11 is another schematic view of the opening and closing device in a cabinet with a large angle opening and closing device provided by the utility model;

FIG. 12 is a cross-sectional view of the opening and closing device C-C' of FIG. 11;

1-cabinet body, 11-top plate, 12-left side plate, 13-bottom plate, 14-right side plate, 2-door frame, 21-upper transverse frame, 22-hinge vertical frame, 23-lower transverse frame, 24-handle vertical frame, 25-edge folding strip, 251-cylindrical groove, 26-handle strip, 10-opening and closing device, 3-space hinge, 30-upper hinge, 31-fixed base, 32-connecting strip, 33-hinged base, 331-mounting groove, 332-limit groove, 34-protruding part, 35-through hole, 36-hollow area, 37-lower hinge, 4-pin, 41-fixed part, 411-barb, 42-switching part, 421-clamping groove, 43-spacer ring, 44-upper pin, 45-lower pin, 5-limit retainer ring and 6-steel ball.

Detailed Description

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

The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the utility model, its application, or uses.

Methods and apparatus may not be discussed in detail, but are considered to be part of the specification where appropriate.

In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of exemplary embodiments may have different values.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

Example 1:

referring to fig. 1-10, the present utility model provides a cabinet having a large angle opening and closing device, comprising: the cabinet body 1, the door frame 2 and the opening and closing device 10 connecting the cabinet body 1 and the door frame 2;

the cabinet body 1 comprises a top plate 11, a left side plate 12, a bottom plate 13 and a right side plate 14 which are sequentially connected;

the door frame 2 comprises an upper transverse frame 21, a hinge vertical frame 22, a lower transverse frame 23 and a handle vertical frame 24 which are connected in sequence; the hinge vertical frame 22 is also provided with a receiving edge 25 protruding out of the hinge vertical frame 22 along the direction perpendicular to the plane of the door frame 2; along the extending direction of the edge folding strip 25, the length of the edge folding strip 25 is smaller than that of the hinge vertical frame 25, and cylindrical grooves 251 which are recessed towards the inside of the edge folding strip 25 are formed at two ends of the edge folding strip 25;

The opening and closing device 10 comprises an upper and lower hinge 3 and a pin 4 rotationally connected with the upper and lower hinge 3;

the top-bottom hinge 3 comprises a fixed base 31, a connecting strip 32 and a hinge base 33 which are sequentially connected, wherein the fixed base 31 and the hinge base 33 are arranged in parallel, and the connecting strip 32 is connected with the fixed base 31 and the hinge base 33; the fixed base 31 is fixedly connected with the top plate 11 and the bottom plate 13; the hinge base 33 is provided with a mounting groove 331 corresponding to the cylindrical groove 251;

the pin 4 comprises a fixing part 41, a switching part 42 and a separation ring 43 for connecting the fixing part and the switching part, wherein the fixing part 41 is provided with a plurality of barbs 411 protruding out of the pin 4 at the outer periphery, the fixing part 41 is inserted into the cylindrical groove 251 to be fixedly connected with the edging 25, the switching part 42 is inserted into the mounting groove 331 to be rotatably connected with the hinge base 33, and the edging 25 is rotatably connected with the hinge base 33;

the top-bottom hinge 3 comprises an upper hinge 30, wherein a mounting groove 331 of the upper hinge 30 penetrates through a hinge base 33, a limiting groove 332 connected with the mounting groove 331 is further formed in the top of the hinge base 33, and the inner diameter of the mounting groove 331 is smaller than that of the limiting groove 332; the pin 4 comprises an upper pin 44, a circle of clamping groove 421 recessed towards the inside of the pin 4 is arranged at the outer periphery of the upper pin switching part 42, and a limiting retainer ring 5 is arranged between the limiting groove 332 and the clamping groove 421 so as to limit the upper pin 44; the adapter part 42 of the upper pin 44 is inserted into the mounting groove 331 to be rotationally connected with the upper hinge 30, and the fixing part 41 of the upper pin 44 is inserted into the cylindrical groove 251 at the top of the edging 25 to be fixedly connected with the edging 25, so that the edging 25 is rotationally connected with the upper hinge 30;

The top-bottom hinge 3 further comprises a lower hinge 37, the pin 4 also comprises a lower pin 45, the switching part 42 of the lower pin 45 is inserted into the mounting groove 331 of the lower hinge 37 to be rotationally connected with the lower hinge 37, and the fixing part 41 of the lower pin 45 is inserted into the cylindrical groove 251 at the bottom of the edge folding strip 25 to be fixedly connected with the edge folding strip 25, so that the edge folding strip 25 is rotationally connected with the lower hinge 37;

in the closed state of the cabinet, the upper transverse frame 21 is attached to the top plate 11, and the lower transverse frame 23 is attached to the bottom plate 13; when the cabinet is in an open state, the door frame 2 rotates with the upper pin 44 and the lower pin 45 by taking the central axis of the pin 4 as an axis, the maximum included angle between the upper transverse frame 21 and the top plate 11 is larger than 180 degrees, and the maximum included angle between the lower transverse frame 23 and the bottom plate 13 is larger than 180 degrees.

Referring to fig. 1, the present embodiment provides a cabinet having a large-angle opening and closing device, including: the cabinet body 1, the door frame 2 and the opening and closing device 10 connecting the cabinet body 1 and the door frame 2; fig. 1 is only schematically illustrated with two split door frames 2. Fig. 1 shows the cabinet in a closed state, in which 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.

Referring to fig. 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, a back plate (not shown in the figure) can be further arranged on the side, away from the door frame 2, of the cabinet body 1, so that the cabinet is completely closed, and dust accumulation in the cabinet is reduced. Fig. 2 shows the fully opened state of the cabinet, wherein the upper transverse frame 21 and the top plate 11 have an included angle of about 260 degrees, and the lower transverse frame 23 and the bottom plate 13 have an included angle of about 260 degrees when the door frame 2 is fully opened; compared with the prior art, the opening angle of the door frame 2 is increased, the door frame 2 can be folded to one side of the left side plate 12 or the right side plate 14, the indoor movable space is not occupied, and the door frame is not easy to collide.

Referring to fig. 3 and 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, which are sequentially connected; specifically, the door frame 2 may further be provided with a door panel (not shown in the figure), which may be a wooden door panel or a glass core panel. The hinge vertical frame 22 is also provided with a receiving edge 25 protruding out of the hinge vertical frame 22 along the direction perpendicular to the plane of the door frame 2; along the extending direction of the edge folding strip 25, the length of the edge folding strip 25 is smaller than that of the hinge vertical frame 25, and cylindrical grooves 251 which are recessed towards the inside of the edge folding strip 25 are formed at two ends of the edge folding strip 25;

it should be noted that, one end of the edging 25 close to the top plate 11 is a top end, and one end of the edging 25 close to the bottom plate 13 is a bottom end; in fig. 4, only the cylindrical groove 251 at the top end of the edging 25 is shown by way of example, the cylindrical groove 251 at the top end of the edging 25 is recessed toward the inside of the edging 25 along the direction in which the upper transverse frame 21 points to the lower transverse frame 23, and similarly, the cylindrical groove 251 at the bottom end of the edging 25 is recessed toward the inside of the edging 25 along the direction in which the lower transverse frame 23 points to the upper transverse frame 21;

it can be appreciated that, along the extending direction of the edge folding strip 25, the length of the edge folding strip 25 is smaller than the length of the hinge vertical frame 25, and the sum of the length of the edge folding strip 25 and the lengths of the upper hinge 30 and the lower hinge 37 is equal to the length of the hinge vertical frame 25, so that the space-to-ground hinge 3 is prevented from exceeding the edge of the door frame 2, and the material is saved and the appearance is more attractive.

Referring to fig. 5 and 8, the opening and closing device 10 includes a top-bottom hinge 3 and a pin 4 rotatably connected with the top-bottom hinge 3; the opening and closing device has simple structure and convenient installation. The top-bottom hinge 3 comprises a fixed base 31, a connecting strip 32 and a hinge base 33 which are sequentially connected, wherein the fixed base 31 and the hinge base 33 are arranged in parallel, and the connecting strip 32 is connected with the fixed base 31 and the hinge base 33; the fixed base 31 is fixedly connected with the top plate 11 and the bottom plate 13; referring to fig. 6, the hinge base 33 is provided with a mounting groove 331 corresponding to the cylindrical groove 251;

when the cabinet is provided with two opposite door frames 2, 4 upper-to-ground hinges, namely an upper left hinge, a lower left hinge, an upper right hinge and a lower right hinge, are required to be arranged, the upper left hinge, the upper right hinge and the top plate 11 are connected, the lower left hinge and the lower right hinge are connected with the bottom plate 13, the upper left hinge and the lower right hinge are identical in shape, the lower left hinge and the upper right hinge are identical in shape, the upper right hinge and the upper left hinge are symmetrical in shape, the upper left hinge is shown in fig. 5 to be schematically illustrated, and the lower left hinge is shown in fig. 8 to be schematically illustrated.

Referring to fig. 7 and 9, the pin 4 includes a fixing portion 41, a switching portion 42 and a spacer 43 connecting the fixing portion and the switching portion, wherein a plurality of barbs 411 protruding from the pin 4 are provided on an outer periphery of the fixing portion 41, the fixing portion 41 is inserted into the cylindrical groove 251 to be fixedly connected with the edging 25, and the switching portion 42 is inserted into the mounting groove 331 to be rotatably connected with the hinge base 33, so that the edging 25 is rotatably connected with the hinge base 33;

The fixing portion 41 of the pin 4 is inserted into the cylindrical groove 251 and fixedly connected with the edging 25, so that the door frame 2 and the pin 4 are connected to integrally rotate; the outer periphery of the fixing part 41 is provided with a plurality of barbs 411 protruding out of the pin 4, so that the relative position sliding of the edge folding strip 25 and the pin 4 can be further prevented; the adaptor 42 of the pin 4 is inserted into the mounting groove 331 to be rotatably connected with the hinge base 33, specifically, the outer periphery of the adaptor 42 is smooth, and friction between the adaptor 42 and the hinge base 33 can be further reduced by oil lubrication or grease lubrication.

It can be understood that when the hinge is used for connecting the door frame and the cabinet body in the prior art, the hinge is fixed on the door frame, and when the door frame is opened, the hinge rotates together with the door frame, so that the opening angle of the door frame is limited; when the door frame 2 is rotated in this embodiment, the top and bottom hinges 3 are fixed on the top plate 11 and the bottom plate 13, the door frame 2 and the pin 4 actually rotate, and the door frame 2 and the pin 4 rotate in the hinge base 33 with the central axis of the pin as the axis, so that the door frame 2 rotates without any limitation or shielding, and the opening angle of the door frame 2 is increased, and when the door frame 2 is fully opened, referring to fig. 2, the opening angle of the door frame is about 260 degrees.

Referring to fig. 5-7, the opening and closing device 10 shown in fig. 5 includes an upper hinge 30 and an upper pin 44 rotatably coupled to the upper hinge 30; the mounting groove 331 of the upper hinge 30 penetrates through the hinge base 33, a limiting groove 332 connected with the mounting groove 331 is further formed in the top of the hinge base 33, and the inner diameter of the mounting groove 331 is smaller than that of the limiting groove 332; the pin 4 comprises an upper pin 44, referring to fig. 7, the outer periphery of the adapter part 42 of the upper pin 44 is provided with a circle of clamping groove 421 recessed towards the inside of the pin 4, and the upper pin 44 is limited by arranging a limiting retainer ring 5 between the limiting groove 332 and the clamping groove 421; the adapter part 42 of the upper pin 44 is inserted into the mounting groove 331 to be rotationally connected with the upper hinge 30, and the fixing part 41 of the upper pin 44 is inserted into the cylindrical groove 251 at the top of the edging 25 to be fixedly connected with the edging 25, so that the edging 25 is rotationally connected with the upper hinge 30;

It should be noted that, in the prior art, the upper hinge only plays a limiting effect, and the bearing of door frame all falls down on the lower hinge, if lower hinge is not hard up, door frame and upper pin easily break away from the upper hinge and lead to the door plant to drop and have the potential safety hazard. In this embodiment, a limiting groove 332 is further provided in 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, specifically, referring to fig. 6, the limiting groove 332 is connected with the mounting groove 331 in a T shape, and the limiting retainer ring 5 is clamped in the limiting groove 332 and cannot slide out from the mounting groove 331, so as to limit the upper pin 44. Specifically, along the extending direction of the upper pin 44, the length of the clamping groove 421 is greater than the thickness of the limit retainer ring 5, and a door plate sinking space is reserved to prevent the upper pin 44 from directly rubbing with the limit retainer ring 5; when the lower hinge 37 is seriously loosened, the upper pin 44 and the door frame 2 sink together, and at the moment, the top of the upper pin 44 and the limiting retainer ring 5 are contacted and rubbed to generate noise, so that a user is reminded of repairing the door.

It can be understood that the hinge base 33 of the upper hinge 30 is further provided with a limiting groove 332, the outer periphery of the switching portion 42 of the pin 44 is provided with a circle of clamping groove 421 recessed toward the inside of the pin 4, and the upper pin 44 is limited by arranging the limiting retainer ring 5 between the limiting groove 332 and the clamping groove 421, so that the problem that the upper pin 44 falls off from the upper hinge 30 due to loosening of the lower hinge 37 is avoided.

Referring to fig. 8 to 10, the opening and closing device 10 shown in fig. 8 includes a lower hinge 37 and a lower pin 45 rotatably connected to the lower hinge 37; the top-bottom hinge 3 further comprises a lower hinge 37, the pin 4 also comprises a lower pin 45, the switching part 42 of the lower pin 45 is inserted into the mounting groove 331 of the lower hinge 37 to be rotationally connected with the lower hinge 37, and the fixing part 41 of the lower pin 45 is inserted into the cylindrical groove 251 at the bottom of the edge folding strip 25 to be fixedly connected with the edge folding strip 25, so that the edge folding strip 25 is rotationally connected with the lower hinge 37;

it will be appreciated that the mounting slot 331 of the lower hinge 37 does not extend through the hinge base 33, and the adapter 42 of the lower pin 45 is inserted into the mounting slot 331 of the lower hinge 37 for rotational connection with the lower hinge 37; the fixing portion 41 of the lower pin 45 is inserted into the cylindrical groove 251 at the bottom of the edging 25 to be connected with the edging 25 as a whole, when the door frame rotates, the switching portion 42 rotates in the mounting groove 331, and the friction between the switching portion 42 and the mounting groove 331 can be further reduced by oil lubrication or grease lubrication.

The cupboard with wide-angle headstock gear that this embodiment provided includes: the cabinet body 1, the door frame 2 and the opening and closing device 10 connecting the cabinet body 1 and the door frame 2; the opening and closing device 10 comprises an upper and lower hinge 3 and a pin 4 rotationally connected with the upper and lower hinge 3. In the closed state of the cabinet, the upper transverse frame 21 is attached to the top plate 11, and the lower transverse frame 23 is attached to the bottom plate 13; when the cabinet is in an open state, the top-bottom hinge 3 is fixed with the cabinet body 1, the door frame 2 rotates with the central shaft of the pin 4 as an axis, the maximum included angle between the upper transverse frame 21 and the top plate 11 is larger than 180 degrees, and the maximum included angle between the lower transverse frame 23 and the bottom plate 13 is larger than 180 degrees. In the opening process of the door frame 2, the top-bottom hinge 3 is fixed with the cabinet body 1, and only the door frame 2 and the pin 4 rotate without any shielding restriction, so that the opening angle of the door frame 2 is increased; by arranging the limiting retainer ring 5 between the upper pin 44 and the upper hinge 30 to limit the upper pin 44, the problem that the door frame 2 and the upper pin 44 are separated from the upper hinge 30 when the lower hinge 45 is loose and the door plate falls is avoided.

Optionally, with continued reference to fig. 8 and 9, a steel ball 6 is further disposed between the mounting groove 331 of the lower hinge 37 and the lower pin 45.

It should be noted that in the prior art, the switching portion of the lower pin directly falls into the mounting groove of the lower hinge, the spacer ring on the pin contacts with the top of the lower hinge to limit the pin, when the door frame is rotated, the spacer ring rubs with the lower hinge to generate harsh friction sound, burrs are generated after long-time friction, and the door plate is not smooth to rotate.

It can be appreciated that in this embodiment, the steel ball 6 is further disposed between the mounting groove 331 of the hinge 37 and the lower pin 45, and the lower pin 45 falls on the steel ball 6 without limiting the lower pin 45 through the spacer ring 43. The steel balls 6 have high hardness and high smoothness, and after a proper amount of solid lubricating oil is filled in the mounting groove 331, friction noise is hardly generated by the rotation friction between the lower pin 45 and the steel balls 6.

Optionally, with continued reference to fig. 9, the end of the adapter 42 of the lower pin 45 away from the fixing portion 41 is a cambered surface.

It can be understood that the end of the switching part 42 of the lower pin 45 away from the fixing part 41, i.e. the surface of the switching part 42 contacting with the steel ball 6 is a cambered surface, so that the lower pin 45 is attached to the steel ball, and the rotation is smoother.

Optionally, with continued reference to fig. 5, the side of the fixed base 31 away from the hinge base 33 includes a protrusion 34 protruding from the fixed base 31, at least one through hole 35 is provided in the protrusion 34, and a screw (not shown) passes through the through hole 35 to fixedly connect the protrusion 34 with the top plate 11 and the bottom plate 13; the fixed base 31 is further provided with a hollowed-out area 36, and a projection of the hollowed-out area 36 along the direction of the hinge base 33 pointing to the fixed base 31 is at least partially overlapped with the protruding portion 34.

It will be appreciated 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 with the top plate 11 and the bottom plate 13 by screws, fig. 5 shows that the side of the fixed connection fixed base 33 away from the hinge base 31 includes a protrusion 34 protruding from the fixed base 33, and at least one through hole 35 is provided in the protrusion 34; in fig. 5, only two through holes are provided on the protruding portion 34 for illustration, and the number and shape of the through holes are not particularly limited; referring to fig. 1 and 3, when the door panel 2 is closed, the hinge vertical frame 22 is embedded in the top-bottom hinge 3; when the protruding part 34 is connected with the top plate 11 and the bottom plate 13 through the screws, the screws are placed in the hollowed-out areas 36, the hinge vertical frame 22 cannot collide with the screws, and the screws are prevented from scratching the hinge vertical frame 22.

Optionally, with continued reference to fig. 4, the handle vertical frame 24 is provided with an L-shaped handle bar 26 protruding from the handle vertical frame 24 in a direction perpendicular to the plane of the door frame 2.

It will be appreciated that the handle vertical rim 24 is provided with an L-shaped handle bar 26 protruding from the handle vertical rim 24 to allow the handle vertical rim 24 to be self-locking to the handle slot. When the cabinet is additionally provided with the handle, the thickness of the handle is larger than that of the edge folding strip 25, and when the door frames of the plurality of cabinets are arranged side by side to open 180 degrees, the additionally provided handle can collide with the core plate of the side cabinet; the handle vertical frame 24 does not need to be additionally provided with a handle from the handle buckling groove, so that the glass core plate is prevented from being broken due to collision with the core plate.

Example 2:

referring to fig. 1-4, and 8-12, the present utility model provides a cabinet having a large angle opening and closing device 10, comprising: the cabinet body 1, the door frame 2 and the opening and closing device 10 connecting the cabinet body 1 and the door frame 2;

the cabinet body 1 comprises a top plate 11, a left side plate 12, a bottom plate 13 and a right side plate 14 which are sequentially connected;

the door frame 2 comprises an upper transverse frame 21, a hinge vertical frame 22, a lower transverse frame 23 and a handle vertical frame 24 which are connected in sequence; the hinge vertical frame 22 is also provided with a receiving edge 25 protruding out of the hinge vertical frame 22 along the direction perpendicular to the plane of the door frame 2; along the extending direction of the edge folding strip 25, the length of the edge folding strip 25 is smaller than that of the hinge vertical frame 22, and cylindrical grooves 251 which are recessed towards the inside of the edge folding strip 25 are formed at two ends of the edge folding strip 25;

the opening and closing device 10 comprises an upper and lower hinge 3 and a pin 4 connected with the upper and lower hinge 3;

the top-bottom hinge 3 comprises a fixed base 31, a connecting strip 32 and a hinge base 33 which are sequentially connected, wherein the fixed base 31 and the hinge base 33 are arranged in parallel, and the connecting strip 32 is connected with the fixed base 31 and the hinge base 33; the fixed base 31 is fixedly connected with the top plate 11 and the bottom plate 13; the hinge base 33 is provided with a mounting groove 331 corresponding to the cylindrical groove 251;

the pin 4 comprises a fixed part 41, a switching part 42 and a separation ring 43 for connecting the fixed part 41 and the switching part 42, the pin 4 comprises an upper pin 44, the outer periphery of the fixed part 41 of the upper pin 44 is provided with a thread structure, the top-bottom hinge 3 comprises an upper hinge 30, the inner periphery of a mounting groove 331 of the upper hinge 30 is provided with a corresponding thread groove, the fixed part 41 is screwed into the mounting groove 331 to be fixedly connected with the hinge base 33, the switching part 42 is inserted into the cylindrical groove 251 to be rotationally connected with the edge folding strip 25, and the door frame 2 is rotationally connected with the upper hinge 30;

The pin 4 further comprises a lower pin 45, the outer periphery of the fixed part 41 of the lower pin 45 is provided with a plurality of barbs 411 protruding out of the pin 4, the top-bottom hinge 3 further comprises a lower hinge 37, the fixed part 41 is inserted into a cylindrical groove 251 of the lower hinge 37 to be fixedly connected with the edging 25, and the switching part 42 is inserted into the mounting groove 331 to be rotatably connected with the hinge base 33, so that the door frame 2 is rotatably connected with the lower hinge 37;

in the closed state of the cabinet, the upper transverse frame 21 is attached to the top plate 11, and the lower transverse frame 23 is attached to the bottom plate 13; in the open state of the cabinet, the upper pin 44 is fixed with the upper hinge 30, the door frame 2 and the lower pin 45 rotate by taking the central axis of the pin 4 as an axis, the maximum included angle between the upper transverse frame 21 and the top plate 11 is larger than 180 degrees, and the maximum included angle between the lower transverse frame 23 and the bottom plate 13 is larger than 180 degrees.

Referring to fig. 1, the present embodiment provides a cabinet having a large-angle opening and closing device, including: the cabinet body 1, the door frame 2 and the opening and closing device 10 connecting the cabinet body 1 and the door frame 2; fig. 1 is only schematically illustrated with two split door frames 2. Fig. 1 shows the cabinet in a closed state, in which 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.

Referring to fig. 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, a back plate (not shown in the figure) can be further arranged on the side, away from the door frame 2, of the cabinet body 1, so that the cabinet is completely closed, and dust accumulation in the cabinet is reduced. Fig. 2 shows the fully opened state of the cabinet, wherein the upper transverse frame 21 and the top plate 11 have an included angle of about 260 degrees, and the lower transverse frame 23 and the bottom plate 13 have an included angle of about 260 degrees when the door frame 2 is fully opened; compared with the prior art, the opening angle of the door frame 2 is increased, the door frame 2 can be folded to one side of the left side plate 12 or the right side plate 14, the indoor movable space is not occupied, and the door frame is not easy to collide.

Referring to fig. 3 and 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, which are sequentially connected; specifically, the door frame 2 may further be provided with a door panel (not shown in the figure), which may be a wooden door panel or a glass core panel. The hinge vertical frame 22 is also provided with a receiving edge 25 protruding out of the hinge vertical frame 22 along the direction perpendicular to the plane of the door frame 2; along the extending direction of the edge folding strip 25, the length of the edge folding strip 25 is smaller than that of the hinge vertical frame 25, and cylindrical grooves 251 which are recessed towards the inside of the edge folding strip 25 are formed at two ends of the edge folding strip 25;

it should be noted that, one end of the edging 25 close to the top plate 11 is a top end, and one end of the edging 25 close to the bottom plate 13 is a bottom end; in fig. 4, only the cylindrical groove 251 at the top end of the edging 25 is shown by way of example, the cylindrical groove 251 at the top end of the edging 25 is recessed toward the inside of the edging 25 along the direction in which the upper transverse frame 21 points to the lower transverse frame 23, and similarly, the cylindrical groove 251 at the bottom end of the edging 25 is recessed toward the inside of the edging 25 along the direction in which the lower transverse frame 23 points to the upper transverse frame 21;

it can be appreciated that, along the extending direction of the edge folding strip 25, the length of the edge folding strip 25 is smaller than the length of the hinge vertical frame 25, and the sum of the length of the edge folding strip 25 and the lengths of the upper hinge 30 and the lower hinge 37 is equal to the length of the hinge vertical frame 25, so that the space-to-ground hinge 3 is prevented from exceeding the edge of the door frame 2, and the material is saved and the appearance is more attractive.

Referring to fig. 8 and 11, the opening and closing device 10 includes a top-bottom hinge 3 and a pin 4 connected to the top-bottom hinge 3; the opening and closing device has simple structure and convenient installation. The top-bottom hinge 3 comprises a fixed base 31, a connecting strip 32 and a hinge base 33 which are sequentially connected, wherein the fixed base 31 and the hinge base 33 are arranged in parallel, and the connecting strip 32 is connected with the fixed base 31 and the hinge base 33; the fixed base 31 is fixedly connected with the top plate 11 and the bottom plate 13; referring to fig. 9 and 12, the hinge base 33 is provided with a mounting groove 331 corresponding to the cylindrical groove 251, and in particular, fig. 9 shows that the inner circumference of the mounting groove 331 of the lower hinge 45 is smooth; fig. 9 shows that the mounting groove 331 of the upper hinge 44 is provided at the inner periphery thereof with a screw groove.

When the cabinet is provided with two opposite door frames 2, 4 upper left hinges, lower left hinges, upper right hinges and lower right hinges are required to be arranged, the upper left hinges, the upper right hinges are connected with the top plate 11, the lower left hinges and the lower right hinges are connected with the bottom plate 13, the upper left hinges are identical to the lower right hinges in shape, the lower left hinges are identical to the upper right hinges in shape, the upper right hinges are symmetrical to the upper left hinges in shape, the lower left hinges are shown in fig. 8 to be schematically illustrated, and the upper left hinges are shown in fig. 12 to be schematically illustrated.

Referring to fig. 10 and 12, the pin 4 includes a fixing portion 41, an adapter portion 42, and a spacer 43 connecting the fixing portion 41 and the adapter portion 42. Referring to fig. 12, the pin 4 includes an upper pin 44, the outer periphery of a fixing portion 41 of the upper pin 44 is provided with a threaded structure, the top-bottom hinge 3 includes an upper hinge 30, the inner periphery of a mounting groove 331 of the upper hinge 30 is provided with a corresponding threaded groove, the fixing portion 41 is screwed into the mounting groove 331 to be fixedly connected with the hinge base 33, and the adaptor portion 42 is inserted into the cylindrical groove 251 to be rotatably connected with the trimming bar 25, so that the door frame 2 is rotatably connected with the upper hinge 30;

it will be appreciated that the fixed portion 41 of the upper pin 44 is screwed into the mounting slot 331 and fixedly coupled to the hinge base 33 of the upper hinge 30; the upper hinge 30 is fixedly connected with the top plate 11, meanwhile, the upper pin is fixedly connected with the upper hinge, when the door frame 2 rotates, only the upper end of the edge folding strip 25 rotates around the upper pin 44, and when the door frame 2 rotates without being blocked, the opening and closing angle of the door frame 2 is increased.

Referring to fig. 8 to 10, the opening and closing device 10 shown in fig. 8 includes a lower hinge 37 and a lower pin 45 rotatably connected to the lower hinge 37; referring to fig. 10, the outer periphery of the fixing portion 41 of the lower pin 45 is provided with a plurality of barbs 411 protruding from the pin 4, the fixing portion 41 is inserted into the cylindrical groove 251 of the lower hinge 37 to be fixedly connected with the edging 25, and the adaptor portion 42 is inserted into the mounting groove 331 to be rotatably connected with the hinge base 33, so that the door frame 2 is rotatably connected with the lower hinge 37;

The fixing portion 41 of the lower pin 45 is inserted into the cylindrical groove 251 and fixedly connected with the edging 25, so that the door frame 2 and the lower pin 45 are integrally connected to rotate; the outer periphery of the fixing part 41 is provided with a plurality of barbs 411 protruding out of the lower pin 45, so that the relative position sliding of the edge folding strip 25 and the lower pin 45 can be further prevented; the adaptor 42 of the lower pin 45 is inserted into the mounting groove 331 to be rotatably connected with the hinge base 33, specifically, the outer circumference of the adaptor 42 is smooth, and friction between the adaptor 42 and the hinge base 33 can be further reduced by oil lubrication or grease lubrication.

The cupboard with wide-angle headstock gear that this embodiment provided includes: the cabinet body 1, the door frame 2 and the opening and closing device 10 connecting the cabinet body 1 and the door frame 2; the opening and closing device 10 comprises an upper and lower hinge 3 and a pin 4 connected with the upper and lower hinge 3. In the closed state of the cabinet, the upper transverse frame 21 is attached to the top plate 11, and the lower transverse frame 23 is attached to the bottom plate 13; when the cabinet is in an open state, the top-bottom hinge 3 is fixed with the cabinet body, the door frame 2 and the lower pin 45 rotate by taking the central shaft of the pin 4 as an axis, the maximum included angle between the upper transverse frame 21 and the top plate 11 is larger than 180 degrees, and the maximum included angle between the lower transverse frame 23 and the bottom plate 13 is larger than 180 degrees. In the opening process of the door frame 2, the top-bottom hinge 3 is fixed with the cabinet body 1, the upper pin 44 is fixed with the upper hinge 30, and only the door frame 2 and the lower pin 45 rotate without any shielding restriction, so that the opening angle of the door frame 2 is increased; the door frame 2 is exposed without a hinge in an open state, clean, simple and safe; the door frame 2 can be in an open state for a long time without affecting the indoor activity space and the indoor overall aesthetic requirement.

Optionally, a steel ball is further disposed between the mounting groove 331 of the lower hinge 37 and the lower pin 45.

It should be noted that in the prior art, the switching portion of the lower pin directly falls into the mounting groove of the lower hinge, the spacer ring on the pin contacts with the top of the lower hinge to limit the pin, when the door frame is rotated, the spacer ring rubs with the lower hinge to generate harsh friction sound, burrs are generated after long-time friction, and the door plate is not smooth to rotate.

It can be appreciated that in this embodiment, the steel ball 6 is further disposed between the mounting groove 331 of the hinge 37 and the lower pin 45, and the lower pin 45 falls on the steel ball 6 without limiting the lower pin 45 through the spacer ring 43. The steel balls 6 have high hardness and high smoothness, and after a proper amount of solid lubricating oil is filled in the mounting groove 331, friction noise is hardly generated by the rotation friction between the lower pin 45 and the steel balls 6.

Optionally, an end of the adapting portion 42 of the lower pin 45 away from the fixing portion 41 is an arc surface.

It can be understood that the end of the switching part 42 of the lower pin 45 away from the fixing part 41, i.e. the surface of the switching part 42 contacting with the steel ball 6 is a cambered surface, so that the lower pin 45 is attached to the steel ball, and the rotation is smoother.

Optionally, the side of the fixed base 31 away from the hinge base 33 includes a protruding portion 34 protruding from the fixed base 31, at least one through hole 35 is provided on the protruding portion 34, and the protruding portion 34 is fixedly connected with the top plate 11 and the bottom plate 13 by passing a screw through the through hole 35; the fixed base 31 is further provided with a hollowed-out area 36, and a projection of the hollowed-out area 36 along the direction of the hinge base 33 pointing to the fixed base 31 is at least partially overlapped with the protruding portion 34.

It will be appreciated 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 with the top plate 11 and the bottom plate 13 by screws, fig. 5 shows that the side of the fixed connection fixed base 33 away from the hinge base 31 includes a protrusion 34 protruding from the fixed base 33, and at least one through hole 35 is provided in the protrusion 34; in fig. 5, only two through holes are provided on the protruding portion 34 for illustration, and the number and shape of the through holes are not particularly limited; referring to fig. 1 and 3, when the door panel 2 is closed, the hinge vertical frame 22 is embedded in the top-bottom hinge 3; when the protruding part 34 is connected with the top plate 11 and the bottom plate 13 through the screws, the screws are placed in the hollowed-out areas 36, the hinge vertical frame 22 cannot collide with the screws, and the screws are prevented from scratching the hinge vertical frame 22.

Alternatively, the handle vertical frame 24 is provided with an L-shaped handle bar 26 protruding from the handle vertical frame 24 in a direction perpendicular to the plane of the door frame 2.

It will be appreciated that the handle vertical rim 24 is provided with an L-shaped handle bar 26 protruding from the handle vertical rim 24 to allow the handle vertical rim 24 to be self-locking to the handle slot. When the cabinet is additionally provided with the handle, the thickness of the handle is larger than that of the edge folding strip 25, and when the door frames of the plurality of cabinets are arranged side by side to open 180 degrees, the additionally provided handle can collide with the core plate of the side cabinet; the handle vertical frame 24 does not need to be additionally provided with a handle from the handle buckling groove, so that the glass core plate is prevented from being broken due to collision with the core plate.

According to the embodiment, the cabinet with the large-angle opening and closing device provided by the utility model has the following beneficial effects:

the utility model discloses a cabinet with a large-angle opening and closing device, which comprises: the cabinet body, the door frame and the opening and closing device for connecting the cabinet body and the door frame; the opening and closing device comprises an upper hinge and a lower hinge and a pin rotationally connected with the upper hinge and the lower hinge. The pin includes fixed part, switching portion and the spacer ring of connecting fixed part and switching portion that set up relatively, fixed part AND gate frame fixed connection, switching portion and world hinge rotation are connected, and fixed part periphery is equipped with a plurality of projections in the barb of pin, can further prevent the receipts limit strip of door frame and the relative position slip of pin. Through set up spacing retaining ring and carry out spacingly to last pin between last pin and last hinge, avoided down when the hinge is not hard up door frame and last pin break away from the problem that leads to the door plant to drop from last hinge. In the closed state of the cabinet, the upper transverse frame of the door frame is attached to the top plate of the cabinet body, and the lower transverse frame is attached to the bottom plate; under the open state of the cabinet, the top-bottom hinge is fixed with the cabinet body, the door frame rotates with the central shaft of the upper pin and the lower pin as the shaft, the maximum included angle between the upper transverse frame and the top plate is larger than 180 degrees, and the maximum included angle between the lower transverse frame and the bottom plate is larger than the degree. In the opening process of the door frame, only the door frame and the pin rotate without any shielding limitation, so that the opening angle of the door frame is increased.

The utility model also discloses a cabinet with the large-angle opening and closing device, which comprises: the cabinet body, the door frame and the opening and closing device for connecting the cabinet body and the door frame; the opening and closing device comprises an upper hinge and a lower hinge and a pin rotationally connected with the upper hinge and the lower hinge. The pin comprises a fixing part, a switching part and a separation ring for connecting the fixing part and the switching part, which are oppositely arranged. The outer periphery of the fixed part of the upper pin is provided with a thread structure, the inner periphery of the mounting groove of the upper hinge is provided with a corresponding thread groove, the fixed part is screwed into the mounting groove to be fixedly connected with the upper hinge, and the door frame is rotationally connected with the rotating part of the upper pin; the switching portion of lower pin rotates with lower hinge to be connected, and the fixed part and the door frame fixed connection of lower pin are equipped with a plurality of projections in the barb of pin, can further prevent the receipts limit strip of door frame and the relative position slip of pin. In the closed state of the cabinet, the upper transverse frame of the door frame is attached to the top plate of the cabinet body, and the lower transverse frame is attached to the bottom plate; under the open state of the cabinet, the top-bottom hinge is fixed with the cabinet body, the upper pin is fixed with the upper hinge, the door frame and the lower pin rotate by taking the central shaft of the pin as an axis, the maximum included angle between the upper transverse frame and the top plate is larger than 180 degrees, and the maximum included angle between the lower transverse frame and the bottom plate is larger than the degree. In the opening process of the door frame, only the door frame and the lower pin rotate without any shielding limitation, so that the opening angle of the door frame is increased.

While certain specific embodiments of the utility model have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the utility model. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the utility model. The scope of the utility model is defined by the appended claims.

Claims (10)

1. A cabinet having a wide angle opening and closing device, comprising: the cabinet comprises a cabinet body, a door frame and an opening and closing device connected with 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 which are sequentially connected;

the door frame comprises an upper transverse frame, a hinge vertical frame, a lower transverse frame and a handle vertical frame which are connected in sequence; the hinge vertical frame is also provided with a receiving strip protruding out of the hinge vertical frame along the direction perpendicular to the plane of the door frame; the length of the edge folding strip is smaller than the length of the vertical frame of the hinge along the extending direction of the edge folding strip, and cylindrical grooves which are sunken towards the inside of the edge folding strip are formed at two ends of the edge folding strip;

The opening and closing device comprises a top-bottom hinge and a pin which is rotationally connected with the top-bottom hinge;

the top-bottom hinge comprises a fixed base, a connecting strip and a hinged base which are sequentially connected, wherein the fixed base and the hinged base are arranged in parallel, and the connecting strip is connected with the fixed base and the hinged base; the fixed base is fixedly connected with the top plate and the bottom plate; the hinge base is provided with a mounting groove corresponding to the cylindrical groove;

the pin comprises a fixed part, a switching part and a separation ring, wherein the fixed part and the switching part are oppositely arranged, the outer periphery of the fixed part is provided with a plurality of barbs protruding out of the pin, the fixed part is inserted into the cylindrical groove to be fixedly connected with the edge folding strip, and the switching part is inserted into the mounting groove to be rotationally connected with the hinge base so as to rotationally connect the edge folding strip with the hinge base;

the top-bottom hinge comprises an upper hinge, wherein a mounting groove of the upper hinge penetrates through the hinge base, a limiting groove connected with the mounting groove is further formed in the top of the hinge base, and the inner diameter of the mounting groove is smaller than that of the limiting groove; the pin comprises an upper pin, a circle of clamping grooves which are recessed towards the inside of the pin are formed in the outer periphery of the upper pin switching part, and the upper pin is limited by arranging limiting check rings on the limiting grooves and the clamping groove pieces; the switching part of the upper pin is inserted into the mounting groove to be rotationally connected with the upper hinge, and the fixing part of the upper pin is inserted into the cylindrical groove at the top of the edge folding strip to be fixedly connected with the edge folding strip, so that the edge folding strip is rotationally connected with the upper hinge;

The top-bottom hinge further comprises a lower hinge, the pin also comprises a lower pin, the switching part of the lower pin is inserted into the mounting groove of the lower hinge to be rotationally connected with the lower hinge, and the fixing part of the lower pin is inserted into the cylindrical groove at the bottom of the edge folding strip to be fixedly connected with the edge folding strip, so that the edge folding strip is rotationally connected with the lower hinge;

the upper transverse frame is attached to the top plate, and the lower transverse frame is attached to the bottom plate when the cabinet is in a closed state; under the open state of the cabinet, the door frame rotates with the upper pin and the lower pin by taking the central shaft of the pin as an axis, the maximum included angle between the upper transverse frame and the top plate is larger than 180 degrees, and the maximum included angle between the lower transverse frame and the bottom plate is larger than 180 degrees.

2. The cabinet with the large-angle opening and closing device according to claim 1, wherein a steel ball is further arranged between the mounting groove of the lower hinge and the lower pin.

3. The cabinet with the large-angle opening and closing device according to claim 2, wherein one end of the lower pin switching part far away from the fixing part is an arc surface.

4. The cabinet with the large-angle opening and closing device according to claim 1, wherein a side of the fixed base away from the hinge base comprises a protruding portion protruding from the fixed base, at least one through hole is formed in the protruding portion, and the protruding portion is fixedly connected with the top plate and the bottom plate by passing a screw through the through hole; the fixing base is also provided with a hollowed-out area, and the projection of the hollowed-out area along the direction of the hinge base pointing to the fixing base is at least partially overlapped with the protruding part.

5. The cabinet with the large-angle opening and closing device according to claim 1, wherein the handle vertical frame is provided with an L-shaped handle bar protruding out of the handle vertical frame in a direction perpendicular to a plane where the door frame is located.

6. A cabinet having a wide angle opening and closing device, comprising: the cabinet comprises a cabinet body, a door frame and an opening and closing device connected with 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 which are sequentially connected;

the door frame comprises an upper transverse frame, a hinge vertical frame, a lower transverse frame and a handle vertical frame which are connected in sequence; the hinge vertical frame is also provided with a receiving strip protruding out of the hinge vertical frame along the direction perpendicular to the plane of the door frame; the length of the edge folding strip is smaller than the length of the vertical frame of the hinge along the extending direction of the edge folding strip, and cylindrical grooves which are sunken towards the inside of the edge folding strip are formed at two ends of the edge folding strip;

the opening and closing device comprises a top-bottom hinge and a pin connected with the top-bottom hinge;

the top-bottom hinge comprises a fixed base, a connecting strip and a hinged base which are sequentially connected, wherein the fixed base and the hinged base are arranged in parallel, and the connecting strip is connected with the fixed base and the hinged base; the fixed base is fixedly connected with the top plate and the bottom plate; the hinge base is provided with a mounting groove corresponding to the cylindrical groove;

The pin comprises a fixing part, a switching part and a spacer ring, wherein the fixing part and the switching part are oppositely arranged, the spacer ring is used for connecting the fixing part and the switching part, the pin comprises an upper pin, a thread structure is arranged on the outer periphery of the fixing part of the upper pin, the top-bottom hinge comprises an upper hinge, a corresponding thread groove is arranged on the inner periphery of a mounting groove of the upper hinge, the fixing part is screwed into the mounting groove to be fixedly connected with the hinged base, and the switching part is inserted into the cylindrical groove to be rotationally connected with the edge folding strip, so that the door frame is rotationally connected with the upper hinge;

the pin further comprises a lower pin, the outer periphery of the fixing part of the lower pin is provided with a plurality of barbs protruding out of the pin, the top-bottom hinge further comprises a lower hinge, the fixing part is inserted into a cylindrical groove of the lower hinge to be fixedly connected with the edge folding strip, the switching part is inserted into the mounting groove to be rotationally connected with the hinge base, so that the door frame is rotationally connected with the lower hinge, and steel balls are further arranged between the mounting groove of the lower hinge and the lower pin;

the upper transverse frame is attached to the top plate, and the lower transverse frame is attached to the bottom plate when the cabinet is in a closed state; the cabinet is in an open state, the upper pin is fixed with the upper hinge, the door frame and the lower pin rotate by taking the central shaft of the pin as an axis, the maximum included angle between the upper transverse frame and the top plate is larger than 180 degrees, and the maximum included angle between the lower transverse frame and the bottom plate is larger than 180 degrees.

7. The cabinet with the large-angle opening and closing device according to claim 6, wherein a steel ball is further arranged between the mounting groove of the lower hinge and the lower pin.

8. The cabinet with a large-angle opening and closing device according to claim 7, wherein one end of the lower pin switching part far away from the fixing part is an arc surface.

9. The cabinet with the large-angle opening and closing device according to claim 6, wherein the side of the fixed base far away from the hinge base comprises a protruding part protruding out of the fixed base, at least one through hole is formed in the protruding part, and the protruding part is fixedly connected with the top plate and the bottom plate through screws penetrating through the through hole; the fixing base is also provided with a hollowed-out area, and the projection of the hollowed-out area along the direction of the hinge base pointing to the fixing base is at least partially overlapped with the protruding part.

10. The cabinet with a large-angle opening and closing device according to claim 6, wherein the handle vertical frame is provided with an L-shaped handle bar protruding out of the handle vertical frame in a direction perpendicular to a plane of the door frame.