CN221259184U - Refrigerating equipment - Google Patents

Abstract

The embodiment of the application provides refrigeration equipment, which belongs to the technical field of refrigeration and comprises a box body, a door body and a hinge. The box body is provided with a taking and placing opening. The door body cover is arranged at the taking and placing opening. The hinge comprises a first hinge seat and a second hinge seat which are hinged with each other, the first hinge seat is connected with the door body, the second hinge seat is arranged on the box body, the first hinge seat can at least partially rotate relative to the second hinge seat, the second hinge seat is provided with an installation cavity, the box body is provided with a constraint part, and the constraint part is arranged in the installation cavity. According to the embodiment of the application, the refrigeration equipment is positioned through the structures of the box body and the second hinging seat, so that the second hinging seat can be accurately and conveniently installed on the box body.

Description

Refrigerating equipment

Technical Field

The application relates to the technical field of refrigeration, in particular to refrigeration equipment.

Background

The hinge of the refrigeration equipment is respectively connected with the main box and the cabinet door, so that the cabinet door can rotate relative to the main box, and the main box is opened or closed. In the related art, the second hinge seat of the hinge is mounted on the box body, and the mounting between the second hinge seat and the box body is inconvenient.

Disclosure of utility model

In view of the foregoing, it is desirable to provide a refrigeration device, so as to facilitate the installation of the second hinge base.

To achieve the above object, an embodiment of the present application provides a refrigeration apparatus, including:

The box body is provided with a taking and placing port;

The door body is covered on the taking and placing opening;

The hinge comprises a first hinge seat and a second hinge seat which are hinged with each other, wherein the first hinge seat is connected with the door body, the second hinge seat is installed in the box body, the first hinge seat can at least partially rotate relative to the second hinge seat, the second hinge seat is provided with an installation cavity, the box body is provided with a constraint part, and the constraint part is located in the installation cavity.

In one embodiment, the second hinge base includes:

the sleeve is rotationally connected with the first hinging seat, and the first hinging seat can at least partially rotate relative to the sleeve;

The connecting piece is connected with the sleeve;

The stop piece is connected with the connecting piece, the stop piece with the sleeve interval arrangement, the stop piece, the connecting piece with the sleeve encloses to be established the installation cavity.

In an embodiment, the stop member and the sleeve are arranged along a radial direction of the sleeve, and the stop member is located outside the sleeve.

In an embodiment, an arrangement direction of the case and the door is a first direction, and the stop piece located at the outer side of the sleeve and the arrangement direction of the sleeve are arranged along the first direction.

In an embodiment, the stop member is located at one side of the sleeve along a direction in which the door body points toward the case.

In an embodiment, a side of the stop facing away from the sleeve abuts against the box body.

In an embodiment, a central axis of the first hinge seat rotating relative to the second hinge seat is a target axis, a plane coinciding with the target axis is a target surface, an arrangement direction of the box body and the door body is parallel to the target surface, and the constraint parts are straddled on two opposite sides of the target surface.

In one embodiment, the sleeve comprises:

The cylinder body is rotationally connected with the first hinging seat, the first hinging seat can at least partially rotate relative to the cylinder body, the connecting piece is connected with the cylinder body, and the cylinder body and the stop piece are arranged at intervals;

The retaining rib is connected with the cylinder body, the retaining rib protrudes out of the cylinder body along the radial direction of the cylinder body, the retaining rib is arranged at intervals with the stop piece, the connecting piece and the retaining rib are enclosed to form the installation cavity, and the constraint part is located between the stop piece and the retaining rib.

In an embodiment, the number of fender muscle is at least two, and at least two keep off the muscle along the axial of barrel is interval arrangement in proper order, the sleeve still includes the connecting plate, the connecting plate respectively with keep off the muscle with the barrel is connected, the connecting plate protrusion in the barrel, the connecting plate is followed along the axial of barrel one end of barrel extends to the other end of barrel.

In one embodiment, the sleeve and the stopper are both abutted with the restraining portion.

In an embodiment, the number of the connecting pieces is at least two, and the direction in which the at least two connecting pieces are sequentially arranged at intervals is a second direction, and the second direction and the arrangement direction of the stop piece and the sleeve are arranged in a crossed manner.

In an embodiment, the constraint part abuts between two adjacent corresponding connecting pieces along the second direction.

In an embodiment, the number of the installation cavities is at least two, at least two installation cavities are arranged along the second direction, the connecting piece and the sleeve are further enclosed to form buffer cavities, and at least one buffer cavity is arranged between every two adjacent installation cavities, so that the constraint part in the installation cavities can squeeze the corresponding connecting piece to deform towards the buffer cavities.

In an embodiment, the second hinge seat further includes a first reinforcing rib, the first reinforcing rib is connected between two connecting pieces corresponding to the buffer cavity, and the first reinforcing rib is staggered from the adjacent constraint portion.

In one embodiment, the number of the installation cavities is one; or, the number of the installation cavities is at least two, the number of the restraining parts is at least two, and each restraining part is positioned in the corresponding installation cavity.

In one embodiment, the number of the installation cavities is 1-5.

In one embodiment, the case includes:

A main body, the access port being formed in the main body;

A restraint plate connected to the main body, the restraint portion being formed at the restraint plate;

and the second reinforcing ribs are respectively connected with the constraint plate and the main body.

In one embodiment, the first hinge base includes:

The first seat body is arranged on the second hinging seat, the first seat body at least partially rotates relative to the second hinging seat, one end of the first seat body, facing the second hinging seat, is provided with a conversion cavity and a conversion table positioned in the conversion cavity, and the door body is connected with the first seat body;

A slider movably mounted to the second hinge base along a central axis of rotation of the first base body relative to the second hinge base, the second hinge base restricting rotation of the slider, the slider having a conversion surface abutting the conversion table on a side facing the conversion table, the conversion surface being inclined in a circumferential direction of the slider, the conversion surface abutting the conversion table;

The first elastic piece is positioned at one end of the sliding block, which is away from the conversion table, and is contacted with the sliding block and the second hinging seat respectively;

The second elastic piece is sleeved on the outer side of the first elastic piece and is respectively contacted with the sliding block and the second hinging seat.

In an embodiment, the picking and placing port is located above the box body, and the central axis of rotation of the first hinge seat relative to the second hinge seat is crossed with the vertical direction.

In an embodiment, the second hinge seat has a first limiting portion, the first limiting portion protrudes toward one end of the first hinge seat along the second hinge seat, and when the door body is opened to a maximum opening, the first limiting portion abuts against the first hinge seat.

In an embodiment, the first hinge seat has a second limiting portion, the second limiting portion protrudes toward one end of the second hinge seat along the first hinge seat, and when the door body is opened to a maximum opening, the second limiting portion abuts against the second hinge seat.

In an embodiment, the first hinge seat has a mounting portion and a third limiting portion, the mounting portion is connected with the door body, the third limiting portion protrudes radially from the first hinge seat, the third limiting portion is located on one side of the mounting portion, which is closed along a circumferential direction of the first hinge seat, of the door body, and the third limiting portion is used for being abutted to the box body to limit the first hinge seat to rotate along a direction of closing the door body.

In an embodiment, the first hinge seat includes a first seat body, the first seat body with the second hinge seat rotates to be connected, first seat body at least partially for the second hinge seat rotates, the first seat body includes rotating member, adapting unit and reinforcing boss, adapting unit with the door body is connected, rotating member with the second hinge seat rotates to be connected, rotating member with adapting unit connects, reinforcing boss respectively with adapting unit with rotating member connects, reinforcing boss follows rotating member's radial protrusion in rotating member, reinforcing boss is located adapting unit along rotating member's circumference and closes one side of door body.

According to the refrigeration equipment provided by the embodiment of the application, as the first hinge seat can at least partially rotate relative to the second hinge seat arranged on the box body, the door body connected with the first hinge seat can rotate relative to the box body, so that the door body can open or close the taking and placing opening. Because one of the second hinging seat and the box body is provided with the mounting cavity, the other one of the second hinging seat and the box body is provided with the constraint part, the constraint part stretches into the mounting cavity to enable the second hinging seat and the box body to be positioned approximately through the constraint part and the mounting cavity, the constraint part and the mounting cavity are part of the box body or the second hinging seat, and the second hinging seat can be positioned through the structures of the box body and the second hinging seat, so that the second hinging seat can be mounted on the box body accurately and conveniently.

Drawings

Fig. 1 is an exploded view of a refrigeration appliance according to an embodiment of the present application;

FIG. 2 is an enlarged view of FIG. 1 at position A;

FIG. 3 is a schematic view of a hinge according to an embodiment of the present application;

fig. 4 is a schematic structural view of a refrigeration apparatus according to an embodiment of the present application;

FIG. 5 is a cross-sectional view taken at position B-B of FIG. 4;

FIG. 6 is an enlarged view of FIG. 5 at position C;

FIG. 7 is an assembly view of the connector, second stiffener, stop bar and body showing the arrangement of the connector, second stiffener and stop bar in a second direction according to an embodiment of the present application;

FIG. 8 is a block bar and web arrangement of an embodiment of the present application;

FIG. 9 is an exploded view of a hinge according to an embodiment of the present application;

FIG. 10 is a schematic view of a hinge according to an embodiment of the present application, showing a first limiting portion;

FIG. 11 is an enlarged view at position D of FIG. 10;

FIG. 12 is a schematic view of a hinge according to an embodiment of the present application, showing a second limiting portion;

Fig. 13 is an enlarged view at position E of fig. 12.

Reference numerals illustrate: 1. a case; 11. a taking and placing port; 13. a main body; 131. a housing; 132. an inner container; 133. a mouth frame; 134. a heat insulating chamber; 14. a constraint plate; 15. a second reinforcing rib; 2. a door body; 3. a hinge; 31. a first hinge base; 311. a first base; 3111. a switching chamber; 3112. a rotating member; 3113. a connecting member; 3114. reinforcing the boss; 312. a slide block; 3121. a conversion surface; 313. a first elastic member; 314. a second elastic member; 315. a rotating shaft; 316. a second limit part; 317. a mounting part; 318. a third limit part; 32. the second hinge seat; 321. a sleeve; 3211. a cylinder; 3212. a blocking rib; 3213. a connecting plate; 322. a connecting piece; 323. a stopper; 324. a first reinforcing rib; 325. a first limit part; 33. a target surface; 4. a mounting cavity; 5. a restraining section; 6. a buffer chamber.

Detailed Description

It should be noted that, in the case of no conflict, the embodiments of the present application and the technical features of the embodiments may be combined with each other, and the detailed description in the specific embodiments should be interpreted as an explanation of the gist of the present application and should not be construed as unduly limiting the present application.

In the description of the embodiments of the present application, the terms "upper," "lower," "top," "bottom," orientation or positional relationship are based on the orientation or positional relationship shown in fig. 4, and it should be understood that these orientation terms are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present application.

In the related art, a first hinge seat of the hinge is connected with the door body, a second hinge seat is arranged on the first hinge seat, the second hinge seat is mounted on the box body, no corresponding positioning structure is arranged between the second hinge seat and the box body and used for positioning the second hinge seat approximately relative to the box body, and the second hinge seat can be assembled in place only by being mounted for a plurality of times, so that the second hinge seat is inconvenient to mount between the second hinge seat and the box body.

In view of the above, an embodiment of the present application provides a refrigeration apparatus, referring to fig. 1 to 8, including a box 1, a door 2 and a hinge 3. The case 1 has a pick-and-place port 11. The door body 2 is covered on the taking and placing opening 11. The hinge 3 comprises a first hinge seat 31 and a second hinge seat 32 which are mutually connected, the first hinge seat 31 is connected with the door body 2, the second hinge seat 32 is mounted on the box body 1, the first hinge seat 31 can at least partially rotate relative to the second hinge seat 32, the second hinge seat 32 is provided with the mounting cavity 4, the box body 1 is provided with the constraint part 5, and the constraint part 5 is positioned in the mounting cavity 4.

In the embodiment of the application, since the first hinge seat 31 can at least partially rotate relative to the second hinge seat 32 installed on the case 1, the door body 2 connected with the first hinge seat 31 can rotate relative to the case 1, so that the door body 2 can open or close the access opening 11. Because the second hinging seat 32 is provided with the installation cavity 4, the box body 1 is provided with the constraint part 5, the constraint part 5 stretches into the installation cavity 4 to enable the second hinging seat 32 and the box body 1 to be approximately positioned through the constraint part 5 and the installation cavity 4, the constraint part 5 and the installation cavity 4 are parts of the box body 1 or the second hinging seat 32, and the second hinging seat 32 can be accurately and conveniently installed on the box body 1 through the structures of the box body 1 and the second hinging seat 32.

It should be explained that the restriction portion 5 is adapted to cooperate with the installation cavity 4 to restrict the restriction portion 5 within the installation cavity 4, and the movement between the second hinge base 32 and the case 1 is restricted by the restriction between the restriction portion 5 and the installation cavity 4, so that the second hinge base 32 is installed at a predetermined position on the case 1.

The shape of the restriction portion 5 is not limited. Illustratively, the constraint 5 may be plate-like in shape. Illustratively, the constraint 5 is a claw.

In an embodiment, referring to fig. 4, the pick-and-place opening 11 is located above the case 1, and a central axis of rotation of the first hinge base 31 relative to the second hinge base 32 is disposed to intersect with the vertical direction.

In the embodiment of the application, since the taking and placing opening 11 is positioned above the box body 1, the door body 2 is covered above the box body 1, and the door body 2 opens the taking and placing opening 11 upwards to place materials into the box body 1 or take materials out of the box body 1.

It is understood that the arrangement direction of the case 1 and the door 2 is not limited. Illustratively, the case 1 and the door 2 covering the access opening 11 may be arranged in a substantially horizontal direction.

It should be noted that the arrangement direction of the case 1 and the door 2 means the arrangement direction of the case 1 and the door 2 in a state where the door 2 closes the access opening 11 of the case 1.

In an embodiment, referring to fig. 2 and 3, and fig. 6 to 8, the second hinge base 32 includes a sleeve 321, a connecting member 322, and a stop member 323. The sleeve 321 is rotatably connected to the first hinge mount 31, and the first hinge mount 31 can be at least partially rotated relative to the sleeve 321. The connector 322 is connected with the sleeve 321. The stopper 323 is connected with the connecting piece 322, and stopper 323 and sleeve 321 interval arrangement, stopper 323, connecting piece 322 and sleeve 321 enclose into installation cavity 4.

In the embodiment of the application, since the stop members 323 are spaced from the sleeve 321, the stop members 323, the connecting members 322 and the sleeve 321 are enclosed to form the installation cavity 4, the constraint part 5 in the installation cavity 4 is positioned between the spaced stop members 323 and the sleeve 321, the size of the constraint part 5 which can be accommodated in the installation cavity 4 is not limited by the size of the sleeve 321, and the constraint part 5 can be set to a required size according to the actual strength requirement.

It will be appreciated that the specific configuration of the second hinge base 32 is not limited to the stop 323 being spaced from the sleeve 321. Illustratively, the stop 323 may be connected with the sleeve 321, the stop 323 and the connector 322 enclosing the mounting cavity 4 or the stop 323 and the sleeve 321 enclosing the mounting cavity 4.

In an embodiment, referring to fig. 2 to 6, the stop 323 and the sleeve 321 are arranged along a radial direction of the sleeve 321, and the stop 323 is located outside the sleeve 321.

In the embodiment of the present application, the first hinge base 31 can at least partially rotate relative to the sleeve 321, the sleeve 321 itself needs to bear a larger load transmitted by the first hinge base 31, and the sleeve 321 has a higher strength. In the process of opening or closing the door body 2 in a rotating manner, the acting force applied by the first hinge seat 31 to the second hinge seat 32 mainly approximately follows the radial direction of the sleeve 321 of the second hinge seat 32, the stop piece 323 and the sleeve 321 are arranged along the radial direction of the sleeve 321, the stop piece 323 is arranged outside the sleeve 321, the constraint part 5 between the sleeve 321 and the stop piece 323 can be restrained by the sleeve 321 with higher strength, and the possibility of damage of the second hinge seat 32 is reduced.

It should be noted that the radial direction of the sleeve 321 means a direction intersecting with the rotation center axis of the first hinge seat 31.

Illustratively, the radial direction of the sleeve 321 refers to a direction perpendicular to the rotational center axis of the first hinge base.

It is understood that the alignment direction of the stopper 323 and the sleeve 321 is not limited. Illustratively, the stop 323 and the sleeve 321 may be aligned along an axial direction of the sleeve 321.

It will be appreciated that the axial direction of the sleeve 321 is substantially the direction corresponding to the central axis of rotation of the first hinge seat 31 with respect to the second hinge seat 32.

In an embodiment, referring to fig. 2 to 6, the arrangement direction of the case 1 and the door 2 is a first direction, and the stop 323 located on the outer side of the sleeve 321 and the arrangement direction of the sleeve 321 are arranged along the first direction.

In the embodiment of the present application, the door body 2 rotates to open or close the access opening 11, so that the acting force applied by the door body 2 to drive the first hinge seat 31 to the second hinge seat 32 has a larger component in the arrangement direction of the box body 1 and the door body 2 covering the access opening 11. The stopper 323 located at the outer side of the sleeve 321 and the arrangement direction of the sleeve 321 are arranged along the first direction, which is favorable for restraining the restraining part 5 located between the stopper 323 and the sleeve 321 through the stopper 323 and the sleeve 321, so that a larger load in the arrangement direction of the box 1 and the door 2 covering the access opening 11 is borne, and the second hinge base 32 is favorable for being firmly installed on the box 1.

The arrangement direction of the case 1 and the door 2 is the arrangement direction of the case 1 and the door 2 in a state where the door 2 closes the access opening 11 of the case 1.

For example, please refer to fig. 4-6, the first direction is the direction indicated by the arrow R1 in the figure.

For example, referring to fig. 4 to 6, the first direction is arranged substantially along the up-down direction.

It is to be understood that the stopper 323 and the sleeve 321 arranged in the radial direction of the sleeve 321 are not limited to being arranged in the first direction as well. Illustratively, the stoppers 323 and the sleeve 321 are arranged along a radial direction of the sleeve 321, and an arrangement direction of the stoppers 323 and the sleeve 321 may be disposed to intersect the first direction. Illustratively, the stoppers 323 are aligned with the sleeve 321 in the radial direction of the sleeve 321, and the alignment direction of the stoppers 323 with the sleeve 321 is substantially horizontal.

In one embodiment, referring to fig. 2 to 6, the stop 323 is located at one side of the sleeve 321 along the direction of the door 2 pointing to the box 1.

In the embodiment of the application, since the stop member 323 is located at one side of the sleeve 321 along the direction of the door 2 pointing to the box 1, the stop member 323 can be restrained between the box 1 and the restraining portion 5 along the first direction, which is beneficial to improving the strength of the stop member 323 and ensuring that the first hinge seat 31 is firmly installed with the box 1.

The direction in which the door 2 is directed toward the case 1 means that the door 2 is directed toward the case 1 in a state in which the door 2 closes the access opening 11 of the case 1.

For example, referring to fig. 2-6, the stop 323 is below the sleeve 321.

It is understood that the position of the stopper 323 is not limited. Illustratively, the stop 323 may be located on one side of the sleeve 321 in a direction of the case 1 toward the access opening 11. Illustratively, the stop 323 may be above the sleeve 321.

In an embodiment, referring to fig. 2 to 6, a side of the stop 323 facing away from the sleeve 321 abuts against the case 1.

In the embodiment of the application, the stop piece 323 is abutted against the box body 1, the stop piece 323 is supported by the box body 1, and the load of the restraint part 5 acting on the stop piece 323 can be partially shared by the box body 1, so that the possibility of damage to the stop piece 323 is reduced.

It will be appreciated that the stop 323 is not limited to abutment with the case 1. Illustratively, the side of the stop 323 facing away from the sleeve 321 is spaced from the case 1.

In an embodiment, referring to fig. 6, a central axis of rotation of the first hinge seat 31 relative to the second hinge seat 32 is a target axis, a plane coinciding with the target axis is a target surface 33, an arrangement direction of the case 1 and the door 2 is parallel to the target surface 33, and the constraint portions 5 are straddled on opposite sides of the target surface 33.

The restraint portion 5 is located in the installation cavity 4, and the portion of the case 1 located in the installation cavity 4 may be regarded as the restraint portion 5.

In the embodiment of the application, since the restraining portions 5 are straddled on the opposite sides of the target surface 33, the load of the restraining portions 5 can be uniformly applied to the sleeve 321, which is beneficial to better bearing the load applied by the restraining portions 5 through the sleeve 321 with higher strength.

Note that, referring to fig. 6, a dashed line is a projection line formed by projecting the target surface 33.

The arrangement direction of the case 1 and the door 2 is the arrangement direction of the case 1 and the door 2 in a state where the door 2 closes the access opening 11 of the case 1.

It will be appreciated that the position of the restriction 5 is not limited. Illustratively, the restriction 5 located within the mounting cavity 4 may be located on one side of the target surface 33.

In one embodiment, referring to fig. 3 and 6, sleeve 321 includes a barrel 3211 and a rib 3212. The cylinder 3211 is rotatably connected to the first hinge seat 31, the first hinge seat 31 is capable of at least partially rotating relative to the cylinder 3211, the connecting piece 322 is connected to the cylinder 3211, and the cylinder 3211 is spaced apart from the stopper 323. The rib 3212 is connected with the cylinder 3211, the rib 3212 protrudes out of the cylinder 3211 along the radial direction of the cylinder 3211, the rib 3212 and the stop piece 323 are arranged at intervals, the stop piece 323, the connecting piece 322 and the rib 3212 enclose a mounting cavity 4, and the constraint part 5 is located between the stop piece 323 and the rib 3212.

In the embodiment of the application, the rib 3212 which is connected with and protrudes out of the cylinder body 3211 and the constraint part 5 in the installation cavity 4 are used for constraining the constraint part 5, so that the weight of the sleeve 321 can be reduced, and the refrigeration equipment is light. The rib 3212 can play a reinforcing role, which is beneficial to improving the strength of the cylinder 3211.

It is to be noted that the radial direction of the cylinder 3211 means a direction intersecting with the rotation center axis of the first hinge seat 31.

Illustratively, the radial direction of the cylinder 3211 refers to a direction perpendicular to the rotational center axis of the first hinge seat.

For example, referring to fig. 3 and 6, the outer surface of the barrel 3211 may be a cylindrical surface or a portion of a cylindrical surface.

For example, referring to fig. 2 and 3, the number of ribs 3212 corresponding to each mounting cavity 4 is one.

For example, referring to fig. 2 and 3, the number of ribs 3212 corresponding to each mounting cavity 4 is at least two.

For example, referring to fig. 2 and 3, the number of ribs 3212 corresponding to each mounting cavity 4 is three, five or eight.

It is to be understood that the specific configuration of sleeve 321 is not limited. Illustratively, the sleeve 321 may not be provided with the rib 3212, and the restraining portion 5 is located between the stopper 323 and the cylinder 3211, and the restraining portion 5 is restrained by the stopper 323 and the cylinder 3211.

In an embodiment, referring to fig. 3, fig. 6 and fig. 8, the number of the blocking ribs 3212 is at least two, the at least two blocking ribs 3212 are sequentially arranged at intervals along the axial direction of the cylinder body 3211, the sleeve 321 further includes a connecting plate 3213, the connecting plate 3213 is respectively connected with the blocking ribs 3212 and the cylinder body 3211, the connecting plate 3213 protrudes out of the cylinder body 3211, and the connecting plate 3213 extends from one end of the cylinder body 3211 to the other end of the cylinder body 3211 along the axial direction of the cylinder body 3211.

In the embodiment of the application, the connecting plate 3213 extends from one end to the other end of the cylinder 3211, so that the connecting plate 3213 has a larger span in the axial direction of the cylinder 3211, which is beneficial for the connecting plate 3213 to restrict the restriction part 5 extending into the installation cavity 4. At least two keep off muscle 3212 interval arrangement, on the one hand keep off muscle 3212 can strengthen barrel 3211, on the other hand, at least two keep off muscle 3212 of interval arrangement save the material between keep off muscle 3212 for sleeve 321 makes comparatively convenient on the whole.

Illustratively, the axial direction of the barrel 3211 is generally the direction corresponding to the central axis of rotation of the first hinge seat 31 relative to the second hinge seat 32.

It will be appreciated that the particular arrangement of the ribs 3212 is not limited. Illustratively, the number of ribs 3212 may be one. Illustratively, one rib 3212 extends from one end of the barrel 3211 to the other end of the barrel 3211 in the axial direction of the barrel 3211.

In an embodiment, referring to fig. 3 and 6, a part of the outer surface of the cylinder 3211 is an arc surface, and a side of the rib 3212 facing the cylinder 3211 is attached to the arc surface.

It will be appreciated that the particular shape of the ribs 3212 is not limited. Illustratively, the ribs 3212 may be generally square or cylindrical in shape.

In one embodiment, referring to fig. 2, 3, 6 and 7, the sleeve 321 and the stop 323 are both abutted with the constraint part 5.

In the embodiment of the present application, the restraint portion 5 abuts against the sleeve 321 and the stopper 323, so that the restraint portion 5 of the case 1 and the second hinge base 32 are engaged with each other, and the second hinge base 32 can be relatively firmly attached to the case 1.

For example, referring to fig. 2, 3, 6 and 7, the rib 3212 and the stopper 323 are abutted against the constraint part 5.

It will be appreciated that the constraint 5 is not limited to abutment with the sleeve 321 and the stop 323. Illustratively, both sleeve 321 and stop 323 are spaced apart from constraint 5.

In an embodiment, referring to fig. 3, the number of the connecting members 322 is at least two, the direction in which the at least two connecting members 322 are sequentially arranged at intervals is a second direction, and the second direction and the arrangement direction of the stop 323 and the sleeve 321 are arranged in a crossing manner.

In the embodiment of the present application, the second direction in which the plurality of connecting members 322 are sequentially arranged at intervals and the arrangement direction of the stop members 323 and the sleeve 321 are arranged in a crossed manner, which is favorable for transmitting the loads at different positions of the stop members 323 to the sleeve 321 more uniformly, improving the bearing capacity of the stop members 323 and reducing the possibility of damage to the stop members 323.

For example, referring to fig. 4, 7 and 8, the second direction is the direction indicated by arrow R2 in the figures.

For example, referring to fig. 2 to 4, fig. 7 and 8, the second direction is arranged along the direction of the central axis of rotation of the first hinge base 31 with respect to the second hinge base 32.

It will be appreciated that the number of connectors 322 is not limited. Illustratively, the number of connectors 322 may be one.

In an embodiment, referring to fig. 2, 3 and 7, the constraint portion 5 abuts between two adjacent connecting members 322 along the second direction.

In the embodiment of the application, the connecting piece 322 is abutted with the constraint part 5, so that the constraint part 5 is clamped by the connecting piece 322 along the second direction, the position of the second hinge seat 32 relative to the box body 1 along the second direction can be well limited, the shake of the second hinge seat 32 along the second direction is reduced, and the second hinge seat 32 is favorably and firmly installed on the box body 1.

It will be appreciated that the constraint 5 is not limited to abutment with the connector 322. Illustratively, the constraint 5 is spaced from the connector 322.

In an embodiment, referring to fig. 3, the number of the installation cavities 4 is at least two, the at least two installation cavities 4 are arranged along the second direction, the connecting piece 322 and the sleeve 321 also enclose a buffer cavity 6, and at least one buffer cavity 6 is disposed between every two adjacent installation cavities 4, so that the constraint part 5 in the installation cavity 4 can squeeze the corresponding connecting piece 322 to deform towards the buffer cavity 6.

It should be explained that the installation cavity 4 accommodates the restriction 5, and the buffer cavity 6 is free of the restriction 5.

In the embodiment of the application, the buffer cavity 6 between the two installation cavities 4 can release the extrusion deformation of the restraining part 5 in the installation cavity 4 to the connecting piece 322, and allow the connecting piece 322 to deform in the second direction, so that the connecting piece 322 can apply a larger reaction force to the corresponding abutting restraining part 5 in the installation cavity 4, thereby firmly clamping the restraining part 5 between the two connecting pieces 322.

It will be appreciated that embodiments of the present application are not limited to the arrangement of the buffer chamber 6 between two mounting chambers 4. Illustratively, the number of the connecting pieces 322 between two adjacent mounting cavities 4 is one, and a constraint part 5 is correspondingly arranged in each mounting cavity 4. Illustratively, the number of the connecting pieces 322 between two adjacent mounting cavities 4 is at least two, the at least two connecting pieces 322 between two adjacent mounting cavities 4 are sequentially abutted along the second direction, and the constraint part 5 is correspondingly arranged in each mounting cavity 4.

In an embodiment, referring to fig. 3, the second hinge base 32 further includes a first reinforcing rib 324, where the first reinforcing rib 324 is connected between two corresponding connecting members 322 of the buffer cavity 6, and the first reinforcing rib 324 is staggered from the constraint portion 5.

It should be noted that the first stiffener 324 is offset from the constraining section 5, and projected in the second direction, the projected area of the first stiffener 324 and the projected area of the adjacent constraining section 5 do not overlap.

It should be noted that, the restraint portion 5 is located in the installation cavity 4, and the portion of the case 1 located in the installation cavity 4 can be regarded as the restraint portion 5.

In the embodiment of the present application, the first reinforcing ribs 324 support the two connecting pieces 322 corresponding to the buffer cavity 6, so as to reduce the degree of suspending the two connecting pieces 322 corresponding to the buffer cavity 6, and facilitate improving the strength of the corresponding connecting pieces 322. The first reinforcing ribs 324 are staggered with the constraint part 5, so that the inhibition of the first reinforcing ribs 324 on the extrusion deformation between the constraint part 5 and the connecting piece 322 is reduced, the strength of the connecting piece 322 corresponding to the buffer cavity 6 can be improved through the first reinforcing ribs 324, and the extrusion deformation of the constraint part 5 on the connecting piece 322 can be fully released to the buffer cavity 6.

It will be appreciated that the second hinge base 32 is not limited to the provision of the first stiffener 324. For example, the first reinforcing ribs 324 may not be provided between the corresponding connection pieces 322 of the buffer chamber 6, and the buffer chamber 6 is opened at a side facing away from the sleeve 321 in the arrangement direction of the sleeve 321 and the stopper 323.

It is to be understood that the arrangement of the first reinforcing bead 324 is not limited. Illustratively, the first stiffener 324 may be aligned with the stop 323.

In one embodiment, referring to fig. 1 and 2, the case 1 includes a main body 13 and a restraint plate 14. The pick-and-place port 11 is formed in the main body 13. The restraint plate 14 is connected to the main body 13, and the restraint portion 5 is formed on the restraint plate 14. The second reinforcing ribs 15 are connected to the constraint plate 14 and the main body 13, respectively.

It should be noted that, the main body 13 is a main structure of the refrigeration device for storing materials, and the pick-and-place openings 11 are all formed in the main body 13.

In the embodiment of the application, the second reinforcing ribs 15 are respectively connected with the constraint plate 14 and the main body 13, so that the load born by the constraint plate 14 is transferred to the main body 13 through the reinforcing ribs, and the main body 13 of the box body 1 shares part of the load, thereby being beneficial to improving the strength of the constraint plate 14 and reducing the possibility of damaging the constraint plate 14.

The restraint portion 5 is located in the installation cavity 4, and the portion of the restraint plate 14 located in the installation cavity 4 may be regarded as the restraint portion 5.

For example, referring to fig. 2 and 3, the number of constraint plates 14 is at least one, and each constraint plate 14 abuts between two adjacent connectors 322 along the second direction.

For example, referring to fig. 2 and 3 and 7, the number of the constraint plates 14 is at least one, each constraint plate 14 abuts between two adjacent connecting pieces 322 along the second direction, and the second reinforcing rib 15 abuts with the corresponding connecting piece 322.

It will be appreciated that the specific structure of the case 1 is not limited. Illustratively, the case 1 includes a main body 13, and the case 1 may not include the constraint plate 14 and the second reinforcing rib 15, and the constraint part 5 is formed at the main body 13.

In an embodiment, referring to fig. 9, the first hinge seat 31 includes a first seat body 311, a slider 312, a first elastic member 313 and a second elastic member 314. The first seat body 311 is mounted on the second hinge seat 32, the first seat body 311 at least partially rotates relative to the second hinge seat 32, one end of the first seat body 311 facing the second hinge seat 32 is provided with a conversion cavity 3111 and a conversion table positioned in the conversion cavity 3111, and the door body 2 is connected with the first seat body 311. The slider 312 is movably mounted to the second hinge base 32 along a central axis of rotation of the first base 311 relative to the second hinge base 32, the second hinge base restricts rotation of the slider 312, one side of the slider 312 facing the conversion table has a conversion surface 3121 abutting the conversion table, the conversion surface 3121 is inclined in a circumferential direction of the slider 312, and the conversion surface 3121 abuts the conversion table. The first elastic member 313 is located at an end of the slider 312 facing away from the conversion table, and the first elastic member 313 is respectively in contact with the slider 312 and the second hinge base 32. The second elastic member 314 is sleeved outside the first elastic member 313, and the second elastic member 314 contacts the slider 312 and the second hinge seat 32 respectively.

In the embodiment of the present application, the first elastic member 313 and the second elastic member 314 apply corresponding elastic force to the slider 312, so that the slider 312 moves along the central axis of rotation of the first seat 311 relative to the second hinge seat 32, and the circumferentially inclined conversion surface 3121 of the slider 312 abuts against the conversion table in the conversion cavity 3111 under the action of the corresponding elastic force applied by the elastic member and the second elastic member 314 to the slider 312, so that the elastic force along the central axis of rotation of the first seat 311 relative to the second hinge seat 32 is converted into the circumferential force of the first hinge seat 31, thereby reducing the force required for opening the door 2, and realizing auxiliary door opening and even hovering of the door 2 in the open position. The second elastic member 314 is sleeved outside the first elastic member 313, and the first elastic member 313 and the second elastic member 314 provide elastic force sharing load together, so that the elastic force attenuation of the first elastic member 313 and the second elastic member 314 is relieved.

For example, referring to fig. 9, the first hinge seat 31 further includes a rotation shaft 315, the first seat body 311 and the second hinge seat 32 are both sleeved on the rotation shaft 315, the slider 312 is sleeved on the rotation shaft 315, and the first elastic member 313 is sleeved on the rotation shaft 315.

For example, the rotation shaft 315 may not be provided.

Illustratively, the slider 312 is keyed to the second hinge mount 32.

Illustratively, the first resilient member 313 is a spring.

Illustratively, the second resilient member 314 is a spring.

The first hinge seat 31 further includes a third elastic member sleeved outside the second elastic member 314, and the third elastic member is respectively in contact with the slider 312 and the second hinge seat 32.

The first hinge seat 31 further includes a fourth elastic member sleeved outside the third elastic member, and the fourth elastic member is respectively in contact with the slider 312 and the second hinge seat 32.

It is understood that the number of layers of the sleeved elastic member is not limited.

It will be appreciated that the specific structure of the first hinge seat 31 is not limited. Illustratively, the first hinge seat 31 includes the first resilient member 313 but does not include the second resilient member 314.

In one embodiment, referring to fig. 1, 2, 5 and 6, the main body 13 includes a housing 131, a liner 132 and a mouth frame 133. The inner container 132 is located in the outer shell 131, a heat insulation cavity 134 is enclosed between the outer shell 131 and the inner container 132, the mouth frame 133 is covered on the heat insulation cavity 134, and the mouth frame 133 is connected with the outer shell 131 and the inner container 132 respectively. The pick-and-place port 11 is formed in the port frame 133.

In the embodiment of the application, the heat exchange between the space in the inner container 132 and the external environment is reduced through the heat insulation cavity 134 between the outer shell 131 and the inner container 132, so that the better refrigerating effect in the box body 1 is maintained.

Illustratively, the refrigeration device may be a refrigerator or freezer.

For example, referring to fig. 2 and 6, the restriction plate 14 formed with the restriction portion 5 is connected with the mouth frame 133.

For example, referring to fig. 2 and 6, the second reinforcing ribs 15 are connected to the constraint part 5 and the mouth frame 133, respectively;

Illustratively, one of the second hinge base 32 and the mouth frame 133 has a mounting cavity 4, and the other of the second hinge base 32 and the mouth frame 133 has a constraint 5.

Illustratively, one of the second hinge base 32 and the housing 131 has the mounting cavity 4, and the other of the second hinge base 32 and the housing 131 has the constraint 5.

It is understood that the shape of the restriction portion 5 formed in the case 1 is not limited. Illustratively, the restraining portion 5 may be generally cylindrical or cubic in shape, as long as the restraining portion 5 is capable of extending into the mounting cavity 4 to be restrained.

Illustratively, the bezel 133 has a notch for mounting the hinge 3, and the body 13 further includes a mounting cover mounted to the notch, to which the restraint plate 14 can be coupled.

Illustratively, the mouth frame 133 has a notch for mounting the hinge 3, and the main body 13 further includes a mounting cover mounted to the notch, and one of the mounting cavity 4 and the constraint part 5 is formed in the mounting cover.

In one embodiment, the refrigeration apparatus further comprises a fastener by which the second hinge base 32 is connected to the cabinet 1.

Illustratively, the fastener is a bolt or screw.

In an embodiment, the second hinge base 32 is connected to the case 1 by a clamping connection.

It should be explained that the connection manner between the second hinge base 32 and the case 1 is a clamping connection, that is, no connection manner other than the clamping connection is provided between the second hinge base 32 and the case 1.

In the embodiment of the present application, the second hinge base 32 is connected to the case 1 by a clamping connection, and no fastening member such as a screw or a bolt is required for installation.

In one embodiment, referring to fig. 3, the number of mounting cavities 4 may be one.

In one embodiment, referring to fig. 3, the number of the mounting cavities 4 may be at least two, and the number of the restraining portions 5 may be at least two, and each restraining portion 5 is located in the corresponding mounting cavity 4.

In the embodiment of the application, the plurality of constraint parts 5 are separated by the mounting cavity 4, so that the length of the constraint parts 5 is reduced, the strength of the constraint parts 5 is improved, and the strength of the die for manufacturing the second hinging seat 32 is correspondingly improved.

For example, referring to fig. 3, at least two mounting cavities 4 are arranged in sequence.

In one embodiment, the number of the installation cavities 4 is 1-5.

Illustratively, the number of mounting cavities 4 may be one, and the number of restrictions 5 within the mounting cavities 4 may be one.

Illustratively, the number of mounting cavities 4 may be two, three, four or five.

It will be appreciated that the number of mounting cavities 4 is not limited. The number of mounting cavities 4 may be greater than five.

The first elastic member 313 is illustratively sleeved on the rotating shaft 315.

In an embodiment, referring to fig. 10 and 11, the second hinge seat 32 has a first limiting portion 325, the first limiting portion 325 protrudes toward one end of the first hinge seat 31 along the second hinge seat 32, and when the door body 2 is opened to a maximum opening, the first limiting portion 325 abuts against the first hinge seat 31.

In the embodiment of the application, the first limiting portion 325 protruding from the second hinge seat 32 abuts against the first hinge seat 31 to limit the first hinge seat 31 to rotate continuously in the direction of opening the door body, so that the door body 2 is limited to the maximum opening degree, and the door body 2 is prevented from being excessively opened.

In an embodiment, referring to fig. 12 and 13, the first hinge seat 31 has a second limiting portion 316, the second limiting portion 316 protrudes toward one end of the second hinge seat 32 along the first hinge seat 31, and when the door body 2 is opened to a maximum opening, the second limiting portion 316 abuts against the second hinge seat 32.

In the embodiment of the application, the second limiting portion 316 protruding from the first hinge seat 31 abuts against the second hinge seat 32 to limit the first hinge seat 31 to rotate continuously in the direction of opening the door body, so that the door body 2 is limited to the maximum opening degree, and the door body 2 is prevented from being excessively opened.

For example, referring to fig. 12 and 13, the second limiting portion 316 is formed on the first seat 311.

In an embodiment, referring to fig. 1 to 3, the first hinge seat 31 has a mounting portion 317 and a third limiting portion 318, the mounting portion 317 is connected to the door body 2, the third limiting portion 318 protrudes along a radial direction of the first hinge seat 31, the third limiting portion 318 is located at one side of the mounting portion 317 along a circumferential direction of the first hinge seat 31 for closing the door body 2, and the third limiting portion 318 is used for abutting against the box body 1 to limit the first hinge seat 31 to rotate along a direction for closing the door body.

In the embodiment of the application, since the third limiting portion 318 is located at one side of the mounting portion 317 for closing the door body along the circumferential direction of the first hinge seat 31, the third limiting portion 318 protruding radially abuts against the case 1, so as to limit the first hinge seat 31 to rotate along the circumferential direction of the first hinge seat 31 towards one side of the door body, and in the assembly process, the first hinge seat 31 can be limited to excessively rotate along the circumferential direction of the first hinge seat 31 towards one side of the door body, which is not beneficial to the installation of the door body 2, under the condition that the door body 2 is not mounted on the first hinge seat 31.

For example, referring to fig. 1 to 3, a mounting portion 317 and a third limiting portion 318 are formed on the first base 311.

In an embodiment, referring to fig. 1 to 3, the first hinge seat 31 includes a first seat body 311, the first seat body 311 is rotatably connected with the second hinge seat 32, the first seat body 311 at least partially rotates relative to the second hinge seat 32, the first seat body 311 includes a rotating member 3112, a connecting member 3113 and a reinforcing boss 3114, the connecting member 3113 is connected with the door body 2, the rotating member 3112 is rotatably connected with the second hinge seat 32, the rotating member 3112 is connected with the connecting member 3113, the reinforcing boss 3114 is respectively connected with the connecting member 3113 and the rotating member 3112, the reinforcing boss 3114 protrudes from the rotating member 3112 in a radial direction of the rotating member 3112, and the reinforcing boss 3114 is located on one side of the connecting member 3113 in a circumferential direction of the rotating member to close the door body 2.

In the embodiment of the present application, since the reinforcing bosses 3114 are respectively connected to the connecting part 3113 and the rotating part 3112, the reinforcing bosses 3114 are capable of reinforcing the cross-connection position of the connecting part 3113 and the rotating part 3112, which is advantageous in improving the connection strength between the connecting part 3113 and the rotating part 3112.

For example, referring to fig. 1 to 3, a mounting portion 317 is formed on the connection member 3113.

For example, referring to fig. 1 to 3, a third limiting portion 318 is formed on the rotating member 3112.

For example, referring to fig. 1 to 3, the third limiting portion 318 is substantially triangular in shape.

For example, referring to fig. 1 to 3, the second limiting member 316 is formed on the connecting member 3113 and/or the rotating member 3112.

The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (23)

1. A refrigeration appliance, comprising:

The box body is provided with a taking and placing port;

The door body is covered on the taking and placing opening;

The hinge comprises a first hinge seat and a second hinge seat which are mutually hinged, wherein the first hinge seat is connected with the door body, the second hinge seat is installed in the box body, the first hinge seat can at least partially rotate relative to the second hinge seat, the second hinge seat is provided with an installation cavity, the box body is provided with a constraint part, and the constraint part is located in the installation cavity.

2. The refrigeration appliance of claim 1 wherein said second hinge mount comprises:

the sleeve is rotationally connected with the first hinging seat, and the first hinging seat can at least partially rotate relative to the sleeve;

The connecting piece is connected with the sleeve;

The stop piece is connected with the connecting piece, the stop piece with the sleeve interval arrangement, the stop piece, the connecting piece with the sleeve encloses to be established the installation cavity.

3. The refrigeration apparatus according to claim 2, wherein the stopper is arranged with the sleeve in a radial direction of the sleeve, the stopper being located outside the sleeve.

4. A refrigerating apparatus as recited in claim 3, wherein an arrangement direction of the case and the door is a first direction, and the stopper located outside the sleeve and the arrangement direction of the sleeve are arranged along the first direction.

5. The refrigeration unit as recited in claim 4 wherein said stopper is located on one side of said sleeve in a direction in which said door body is directed toward said cabinet.

6. The refrigeration appliance of claim 5 wherein a side of the stop facing away from the sleeve abuts the tank.

7. A refrigeration apparatus according to claim 3 wherein a central axis of rotation of said first hinge mount with respect to said second hinge mount is a target axis, a plane coincident with said target axis is a target surface, an arrangement direction of said case and door is parallel to said target surface, and said constraint portions are disposed astride opposite sides of said target surface.

8. A refrigeration unit as recited in claim 3 wherein said sleeve comprises:

The cylinder body is rotationally connected with the first hinging seat, the first hinging seat can at least partially rotate relative to the cylinder body, the connecting piece is connected with the cylinder body, and the cylinder body and the stop piece are arranged at intervals;

The retaining rib is connected with the cylinder body, the retaining rib protrudes out of the cylinder body along the radial direction of the cylinder body, the retaining rib is arranged at intervals with the stop piece, the connecting piece and the retaining rib are enclosed to form the installation cavity, and the constraint part is located between the stop piece and the retaining rib.

9. The refrigeration device of claim 8, wherein the number of ribs is at least two, the at least two ribs are sequentially arranged at intervals along the axial direction of the cylinder, the sleeve further comprises connecting plates, the connecting plates are respectively connected with the ribs and the cylinder, the connecting plates protrude out of the cylinder, and the connecting plates extend from one end of the cylinder to the other end of the cylinder along the axial direction of the cylinder.

10. The refrigeration device according to any one of claims 2 to 9, wherein the sleeve and the stopper are both abutted with the constraint portion.

11. The refrigeration device according to any one of claims 2 to 9, wherein the number of the connecting pieces is at least two, the direction in which the at least two connecting pieces are sequentially arranged at intervals is a second direction, and the second direction and the arrangement direction of the stop piece and the sleeve are arranged in a crossing manner.

12. The refrigeration appliance according to claim 11 wherein said constraint portion abuts between corresponding adjacent two of said connectors in said second direction.

13. The refrigeration unit as recited in claim 12 wherein said number of said mounting cavities is at least two, at least two of said mounting cavities being aligned in said second direction, said connector and said sleeve further enclosing a buffer cavity, at least one of said buffer cavities being provided between each adjacent two of said mounting cavities, such that a constraint portion within said mounting cavity is capable of compressing a corresponding said connector for deformation toward said buffer cavity.

14. The refrigeration appliance according to claim 13 wherein said second hinge mount further includes a first stiffener connected between two corresponding connectors of said buffer chamber, said first stiffener being offset from adjacent said constraint.

15. The refrigeration appliance according to any one of claims 2 to 9, wherein the number of said installation cavities is one; or, the number of the installation cavities is at least two, the number of the restraining parts is at least two, and each restraining part is positioned in the corresponding installation cavity.

16. The refrigeration appliance according to any one of claims 2 to 9, wherein the number of the installation cavities is 1 to 5.

17. The refrigeration appliance of claim 1 wherein said housing includes:

A main body, the access port being formed in the main body;

A restraint plate connected to the main body, the restraint portion being formed at the restraint plate;

and the second reinforcing ribs are respectively connected with the constraint plate and the main body.

18. The refrigeration appliance of claim 1 wherein said first hinge mount comprises:

The first seat body is arranged on the second hinging seat, the first seat body at least partially rotates relative to the second hinging seat, one end of the first seat body, facing the second hinging seat, is provided with a conversion cavity and a conversion table positioned in the conversion cavity, and the door body is connected with the first seat body;

A slider movably mounted to the second hinge base along a central axis of rotation of the first base body relative to the second hinge base, the second hinge base restricting rotation of the slider, the slider having a conversion surface abutting the conversion table on a side facing the conversion table, the conversion surface being inclined in a circumferential direction of the slider, the conversion surface abutting the conversion table;

The first elastic piece is positioned at one end of the sliding block, which is away from the conversion table, and is contacted with the sliding block and the second hinging seat respectively;

The second elastic piece is sleeved on the outer side of the first elastic piece and is respectively contacted with the sliding block and the second hinging seat.

19. The refrigeration device according to claim 1, wherein the pick-and-place opening is located above the case, and the central axis of rotation of the first hinge base relative to the second hinge base is arranged to intersect with the up-and-down direction.

20. The refrigeration appliance according to claim 1, wherein the second hinge seat has a first limiting portion protruding toward one end of the first hinge seat along the second hinge seat, and the first limiting portion abuts against the first hinge seat when the door body is opened to a maximum opening degree.

21. The refrigeration device according to claim 1, wherein the first hinge seat has a second limiting portion protruding toward one end of the second hinge seat along the first hinge seat, and the second limiting portion abuts against the second hinge seat when the door body is opened to a maximum opening degree.

22. The refrigeration device according to claim 1, wherein the first hinge seat has a mounting portion and a third limiting portion, the mounting portion is connected with the door body, the third limiting portion protrudes in a radial direction of the first hinge seat, the third limiting portion is located at a side of the mounting portion, which closes the door body in a circumferential direction of the first hinge seat, and the third limiting portion is used for abutting against the box body to limit the first hinge seat to rotate in a direction of closing the door body.

23. The refrigeration apparatus according to claim 1, wherein the first hinge base includes a first base body rotatably connected with the second hinge base, the first base body is at least partially rotatable with respect to the second hinge base, the first base body includes a rotating member, a connecting member, and a reinforcing boss, the connecting member is connected with the door body, the rotating member is rotatably connected with the second hinge base, the rotating member is connected with the connecting member, the reinforcing boss is connected with the connecting member and the rotating member, respectively, the reinforcing boss protrudes from the rotating member in a radial direction of the rotating member, and the reinforcing boss is located on one side of the connecting member in a circumferential direction of the rotating member to close the door body.