CN220769196U - Hinge assembly and refrigeration equipment - Google Patents

Abstract

The utility model discloses a hinge assembly and refrigeration equipment, wherein the hinge assembly comprises a movable shaft and a groove body; the groove body comprises a first track groove and a second track groove; the movable shaft comprises a shaft body which sequentially moves in the first track groove and the second track groove; the shaft body is in sliding fit with the first track groove, and the hinge assembly further comprises a limiting part for limiting the shaft body to rotate in the first track groove along the circumferential direction; the shaft body can rotate in the second track groove along the circumferential direction; the hinge assembly is also provided with a rotation limiting part which is arranged in the second track groove to limit the rotation angle of the shaft body in the second track groove. According to the utility model, the movement of the door body in the opening process is realized through the single shaft arrangement, the rotation of the shaft body in the groove is avoided in the moving process, and meanwhile, the problem that the door body cannot be reset when being closed is avoided through the rotation limiting part, so that the door body is prevented from being interfered by external environment parts in the opening process through the simpler structure arrangement.

Description

Hinge assembly and refrigeration equipment

Technical Field

The utility model relates to the technical field of household equipment, in particular to a hinge assembly and refrigeration equipment.

Background

The embedded electric appliance can be integrated with the external environment, is more and more popular, and for embedded refrigeration equipment such as an embedded refrigerator, the embedded refrigerator generally comprises a box body and a door body rotating on the box body, wherein a storage space is arranged in the box body, and the door body is used for opening or closing the storage space. In order to make the door body more attractive after being closed, the distance between the embedded refrigeration equipment and an external environment piece is made as small as possible after the door body is closed, but the arrangement of the structure can influence the opening of the door body. In order to solve the technical problem, a hinge assembly with a double-shaft structure is adopted in the prior art, namely, when the door body rotates along the main shaft in the opening process, the auxiliary shaft guides the door body to control the door body to move, so that the door body can be controlled to move in the opening process of the door body, and interference of external environment parts is avoided.

The hinge assembly in the prior art is mainly double-shaft, has a complex structure, is complex in motion trail and is inconvenient to apply in practice.

Disclosure of Invention

The utility model aims to realize the opening of the door body applying the hinge assembly by a more concise structure, and simultaneously, the problem that the door body applying the hinge assembly cannot be reset when being closed is avoided by arranging the rotation limiting part.

In order to achieve one of the above objects, an embodiment of the present utility model provides a refrigeration apparatus including a movable shaft and a tank; the groove body comprises a first track groove and a second track groove; the movable shaft comprises a shaft body which sequentially moves in the first track groove and the second track groove;

the shaft body is in sliding fit with the first track groove, and the hinge assembly further comprises a limiting part for limiting the shaft body to rotate in the first track groove along the circumferential direction; the shaft body can rotate in the second track groove along the circumferential direction;

the hinge assembly is further provided with a rotation limiting part which is arranged in the second track groove to limit the rotation angle of the shaft body in the second track groove.

Further, the limiting portion is disposed on an outer wall of the shaft body, and the limiting portion includes an abutting surface for abutting against an inner wall of the first track groove to limit rotation of the shaft body in the first track groove.

Further, a shaft body rotation limiting part is arranged on the shaft body, and the shaft body rotation limiting part abuts against the rotation limiting part to limit the angle of the shaft body rotating in the second track groove along the circumferential direction.

Further, the shaft body rotation limiting part is arranged on the outer wall of the shaft body, and the rotation limiting part is arranged on the inner wall of the second track groove;

the shaft body rotation limiting parts and the limiting parts are distributed along the circumferential direction of the shaft body or the rotation limiting parts and the limiting parts are overlapped in position.

Further, the cross section of the shaft body is flat, and has a length direction and a width direction; the outer wall of the shaft body is also provided with a pair of arc-shaped surfaces, the arc-shaped surfaces and the limiting parts are distributed along the circumferential direction of the shaft body, and the arc-shaped surfaces are oppositely arranged along the length direction.

Further, the second track groove is circular, the diameter of the second track groove is not smaller than the largest dimension of the shaft body along the length direction, and the rotation limiting part comprises a protruding part formed on the inner wall of the second track groove.

Further, the inner wall of the second track groove comprises a pair of arc-shaped inner walls with opposite positions, the arc centers of the pair of arc-shaped inner walls coincide, and the arc-shaped inner walls are matched with the arc-shaped surface; the curvature of the arc-shaped inner wall is consistent with the curvature of the arc-shaped surface; the shaft body rotates between a pair of arc-shaped inner walls; the rotation limiting part is arranged at the side of the arc-shaped inner wall.

Further, two rotation limiting parts are arranged, and the two rotation limiting parts are arranged in a central symmetry way by taking the center of the second track groove as a symmetry point.

Further, the rotation limiting portions and the limiting portions are provided with a pair, the pair of rotation limiting portions are arranged in a central symmetry mode by taking the central axis of the shaft body as a symmetry point, and the pair of limiting portions are arranged in a central symmetry mode by taking the central axis of the shaft body as a symmetry point.

Further, the second track groove comprises a main body section and a rotating section, the main body section is opposite to the first track groove in position and extends in the second track groove, and the rotating section is used for avoiding the shaft body when the shaft body rotates;

the two rotating sections are arranged in a central symmetry mode by taking the center of the main body section as a symmetry point.

Further, the rotation limiting part comprises a rotating column which extends from the inner wall of the second track groove towards the tail end of the first track groove, the shaft body is provided with a rotating groove, the rotating groove is opened along the radial direction of the shaft body, and the rotating column can be accommodated in the rotating groove and relatively rotate along the circumferential direction of the shaft body;

The rotary groove is internally provided with a pair of rotary groove inner walls which are oppositely arranged along the circumferential direction of the shaft body, and the shaft body limiting part is arranged on the rotary groove inner walls.

Further, the section of the rotary groove is in a fan shape as a whole, and the section of the second track groove is in a circular shape as a whole.

The utility model also discloses a refrigeration device, which comprises a box body with a containing space, a door body and the hinge component; the door body is pivoted to the box body through the hinge assembly so as to open or close the accommodating space; the box body is provided with a box side wall and a box front wall;

in the process of opening the door body, the shaft body sequentially moves in the first track groove and the second track groove; and the door body moves relatively in a direction away from the front wall of the box and away from the side wall of the box when the shaft body moves along the first track groove.

Further, the hinge assembly is further provided with a hinge plate arranged on the box body, the groove body is arranged on the hinge plate, and the shaft body is arranged on the door body;

the first track groove is integrally arc-shaped and integrally extends towards a direction gradually away from the front wall of the box and away from the side wall of the box.

Further, the hinge assembly is further provided with a hinge plate arranged on the box body, the shaft body is arranged on the hinge plate, and the groove body is arranged on the door body;

in the closed state of the door body, the first track groove is integrally arc-shaped and integrally extends towards the direction gradually approaching the front wall of the box and the side wall of the box.

Further, the refrigeration equipment is a refrigerator.

Compared with the prior art, the door body applying the hinge assembly is moved in the opening process through the single shaft, the rotation of the shaft body in the groove is avoided through the setting of the limiting part in the moving process, meanwhile, the problem that the door body applying the hinge assembly cannot be reset when being closed is avoided through the setting of the rotating limiting part, and the door body is prevented from being interfered by external environment parts in the opening process through the simpler structure setting.

Drawings

Fig. 1 is a schematic view of a refrigeration apparatus according to a first embodiment of the present utility model;

fig. 2 is a schematic view showing the structure of a door body in a refrigeration apparatus according to a first embodiment of the present utility model;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

fig. 4 is a schematic view of an installation structure of a shaft body in a refrigeration apparatus according to a first embodiment of the present utility model;

Fig. 5 is a schematic view showing a structure of a door body in a refrigeration apparatus according to a first embodiment of the present utility model when the door body is opened until the shaft body moves to a second track groove;

fig. 6 is a schematic view of a structure in which a door body rotates in a second track groove in a refrigeration apparatus according to a first embodiment of the present utility model;

FIG. 7 is a partial enlarged view at B in FIG. 6;

fig. 8 is a schematic view of a structure of a door body at a maximum opening angle in a refrigeration appliance according to a first embodiment of the present utility model;

fig. 9 is a schematic view showing a structure of a door body when closed in a refrigeration apparatus according to a second embodiment of the present utility model;

fig. 10 is a schematic view showing an installation structure of a door body and a hinge assembly in a refrigeration apparatus according to a second embodiment of the present utility model;

FIG. 11 is a sectional view in the direction CC in FIG. 10;

fig. 12 is a schematic structural view of a hinge assembly in a refrigeration appliance according to a second embodiment of the present utility model;

fig. 13 is a schematic view showing the structure of a first tank in a refrigeration apparatus according to a second embodiment of the present utility model;

fig. 14 is a schematic structural view of a second tank body in a refrigeration apparatus according to a second embodiment of the present utility model;

fig. 15 is a schematic view showing the structure of a movable shaft in a refrigeration appliance according to a second embodiment of the present utility model;

fig. 16 is a schematic view showing a structure of a hinge assembly when a door body is closed in a refrigeration apparatus according to a third embodiment of the present utility model;

Fig. 17 is a schematic view of a structure of a refrigeration apparatus according to a third embodiment of the present utility model when the door body is opened until the shaft body is positioned in the second track groove;

fig. 18 is a schematic view showing a structure of a refrigeration apparatus according to a third embodiment of the present utility model when a door body is opened to a maximum angle;

fig. 19 is a schematic view showing the structure of a movable shaft in a refrigeration apparatus according to a third embodiment of the present utility model;

fig. 20 is a perspective view of a hinge assembly in the refrigeration appliance according to the fourth embodiment of the present utility model when the door body is opened until the shaft body is positioned in the second track groove;

fig. 21 is a schematic view showing a structure of a hinge assembly when a door is opened and closed in a refrigeration apparatus according to a fourth embodiment of the present utility model;

fig. 22 is a schematic structural view of a hinge assembly in the refrigeration apparatus according to the fourth embodiment of the present utility model when the door body is opened until the shaft body is positioned in the second track groove;

fig. 23 is a schematic structural view of a hinge assembly when a door body is opened to a maximum angle in a refrigeration appliance according to a fourth embodiment of the present utility model;

fig. 24 is a schematic view showing the structure of a rotation shaft in a refrigeration apparatus according to a fourth embodiment of the present utility model;

fig. 25 is a perspective view of a hinge assembly in a refrigeration appliance according to a fifth embodiment of the present utility model with the door body in a closed state;

Fig. 26 is a schematic view showing the structure of a tank in a refrigeration apparatus according to a fifth embodiment of the present utility model;

fig. 27 is a schematic view showing a structure of a hinge assembly in a refrigeration apparatus according to a fifth embodiment of the present utility model when a door body is in a closed state;

fig. 28 is a schematic view of the structure of a rotating shaft in a refrigeration appliance according to a fifth embodiment of the present utility model;

fig. 29 is a schematic view showing the structure of a shaft body in a refrigeration apparatus according to a first embodiment of the present utility model;

description of the drawings:

1-box body, 11-box front wall, 12-box side wall, 2-door body, 21-door front wall, 22-door side wall, 23-door outer edge, 24-door inner edge, 3-hinge assembly, 31-movable shaft, 311-shaft body, 312-shaft body rotation limit part, 313-arc surface, 314-rotation groove, 315-installation part, 316-upper limit plate, 317-lower limit plate, 32-groove body, 321-first track groove, 322-second track groove, 3221-arc inner wall, 3222-main body section, 3223-rotation section, 33-limit part, 4-rotation limit part, 35-hinge plate.

Detailed Description

The present utility model will be described in detail below with reference to specific embodiments shown in the drawings. These embodiments are not intended to limit the utility model and structural, methodological, or functional modifications of these embodiments that may be made by one of ordinary skill in the art are included within the scope of the utility model.

An embodiment of the present utility model provides a refrigeration apparatus, which may be a case embedded in an external environment member, for example, a decorative member such as a cabinet or a rock board, and may be a refrigerator or other household appliances embedded in an external environment member such as a wine cabinet, a storage cabinet, etc.

As shown in fig. 1 in this embodiment, the refrigeration apparatus includes a case 1 for providing an internal storage space, a door 2 and a hinge assembly 3, the door 2 being pivoted to the case 1 by the hinge assembly 3 to open or close the storage space;

the case 1 in this embodiment has a case front wall 11 and a case side wall 12 provided perpendicularly to the case front wall 11, and the case front wall 11 and the case side wall 12 in this embodiment are substantially planar. The door 2 is integrally located on the front side of the case 1 on the case front wall 11 provided with the opening of the storage space, and when the door 2 is in the closed state, the opening of the storage space is closed, and the front side is the opening direction of the storage space.

The door body 2 further has a door front wall 21, a door side wall 22, and a door rear wall, wherein a door outer edge 23 is formed at the intersection of the door front wall 21 and the door side wall 22, and a door inner edge 24 is formed at the intersection of the door side wall 22 and the door rear wall. When the door body 2 is in a closed state, i.e. the door body 2 covers the storage space opening, the door front wall 21 is arranged on the side of the door body 2 facing away from the box front wall 11. In this embodiment, the door front wall 21 is entirely planar, and the door front wall 21 is substantially parallel to the box front wall 11 when the door body 2 is in the closed state.

The tank 1 is arranged beside the external environment member, and after the tank 1 is put in place, the tank side wall 12 faces the first side of the external environment member, i.e. the tank side wall 12 is positioned opposite to the first side of the external environment member, and the tank side wall 12 is substantially parallel to the first side of the external environment member.

In the closed state of the door body 2, the door side wall 22 also faces the first side of the external environment member, the door side wall 22 being located opposite to the first side, the door side wall 22 being entirely planar in this embodiment, and the door side wall 22 being substantially parallel to the first side of the external environment member.

In this embodiment, the door front wall 21 and the door side wall 22 are both substantially planar, and when the door body 2 is in the closed state, the door front wall 21 is parallel to the box front wall 11, and the plane of the door side wall 22 is parallel to the plane of the box side wall 12. Of course, in other embodiments, the door front wall 21 and the door side wall 22 may be curved or arcuate.

In this embodiment, as shown in fig. 1 to 4, the hinge assembly 3 includes a movable shaft 31 and a groove 32; the movable shaft 31 includes a shaft body 311 movable in the groove body 32, and the shaft body 311 and the groove body 32 are relatively movable during the opening of the door body 2.

In a specific embodiment, the slot body 32 includes a first track slot 321 and a second track slot 322; the shaft body 311 sequentially moves in the first track groove 321 and the second track groove 322;

The shaft body 311 is in sliding fit with the first track groove 321, and the hinge assembly 3 further comprises a limiting part 33 for limiting the relative rotation between the shaft body 311 and the first track groove 321; the limiting part 33 is arranged to limit the rotation of the shaft body 311 in the first track groove 321 along the circumferential direction; the shaft body 311 is rotatable in the circumferential direction within the second track groove 322.

In this embodiment, the movement of the door body 2 can be realized by sliding the shaft body 311 along the first track groove 321 during the opening process of the door body 2, and the shaft body 311 is provided with the limit portion 33 when sliding along the first track groove 321, so that the rotation of the shaft body 311 in the circumferential direction in the first track groove 321 is avoided. When the shaft body 311 rotates circumferentially in the first track groove 321, the door body 2 rotates synchronously, and the door outer edge 23 is interfered by external environment parts due to the premature rotation of the door body 2. The setting of the limiting part 33 in this embodiment can enable the door body 2 to slide along the first track groove 321 instead of rotate at the initial stage of opening, so as to effectively avoid interference between the door body 2 and the external environment at the initial stage of opening.

In a specific embodiment, as shown in fig. 1 to 4, the first track groove 321 is integrally elongated, and the extending shape of the first track groove 321 may be a straight line or a curved line, and in this embodiment, in order to better implement the movement of the position of the door body 2, the first track groove 321 is integrally curved and extends.

The limiting portion 33 is disposed on the outer wall of the shaft body 311, and the limiting portion 33 includes an abutment surface for abutting against the inner wall of the first track groove 321 to limit the rotation of the shaft body 311 in the first track groove 321.

Through set up the butt face on the outer wall of axis body 311 in order to realize with the offset of first track groove 321 inner wall, adopted simple structure to realize axis body 311 in first track groove 321 internal circumference pivoted spacing, the structure is simpler, and the operation is more convenient.

The abutment surface of the limiting portion 33 may be disposed to extend substantially in a plane, and when the limiting portion 33 slides in the first track groove 321, the limiting portion 33 having a planar shape as a whole may abut against the inner wall of the first track groove 321, so as to limit the relative rotation between the shaft body 311 and the first track groove 321 in the circumferential direction.

It will be understood, of course, that in order to better match the inner wall of the first track groove 321, when the first track groove 321 is integrally provided in a curved extending manner, the abutting surface of the limiting portion 33 is correspondingly a curved surface provided on the outer wall of the shaft body 311, and the curved surface of the limiting portion 33 is adapted to the curved surface of the inner wall of the first track groove 321. In a specific embodiment, the whole curve formed by intersecting the curved surface and the cross section of the shaft body can be arc-shaped.

The limiting parts 33 may be one or two, and when the limiting parts 33 are provided with one limiting part, the limiting part is equivalent to cutting off a part of the shaft body 311 on the shaft body 311 which is originally cylindrical in whole along the axial direction parallel to the shaft body 311 to form a limiting surface, and the limiting surface is used for being abutted against the inner wall of the first track groove 321.

Of course, in other embodiments, as shown in fig. 2-4, two limiting portions 33 may be provided, and the two limiting portions 33 are disposed on two opposite sides of the outer wall of the shaft body 311. When the two limiting parts 33 are arranged on two sides of the shaft body 311 in opposite directions, the whole cross section of the shaft body 311 is flat, the cross section of the shaft body 311 is provided with a length direction and a width direction, and the two limiting surfaces are arranged and symmetrically arranged along the width direction of the shaft body 311.

The shaft body 311 is a flat shaft body as a whole, and the length direction of the cross section of the shaft body 311 is consistent with the extending direction of the first track groove 321, that is, the extending direction of the shaft body 311 in the transverse direction is along the extending direction of the first track groove 321. Note that, since the first track groove 321 is curved as a whole, the extending direction of the first track groove 321 is a tangential direction of the curved line position where the first track groove 321 is located.

The first track groove 321 has two inner walls disposed opposite to each other in a direction perpendicular to an extending direction of the first track groove 321. When the shaft body 311 slides along the first track groove 321, the two limiting portions 33 are respectively opposite to the two opposite inner wall positions of the first track groove 321. When any limit part 33 is propped against the inner wall of the first track groove 321 in the sliding process of the shaft body 311, the limit of the rotation of the shaft body 311 in the circumferential direction in the first track groove 321 can be realized. The two limiting portions 33 are limited between the two inner walls, so that the flat shaft body 311 can only slide along the extending direction of the first track groove 321 and cannot rotate.

When the shaft body 311 slides along the first track groove 321, the length direction of the cross section of the shaft body 311 is substantially the same as the extending direction of the first track groove 321 where the shaft body 311 is located.

When the first track groove 321 is curved as a whole, the tangential direction of the curve at the position of the first track groove 321 where the shaft body 311 is located is substantially the same as the longitudinal direction of the shaft body 311. That is, the tangential direction of the curve of the position of the shaft body 311 in the first track groove 321 is the extending direction of the first track groove 321.

After the shaft body 311 slides along the first track groove 321, as shown in fig. 5-8, the shaft body 311 moves in the second track groove 322, in this embodiment, the shaft body 311 can rotate in the circumferential direction in the second track groove 322, when the shaft body 311 rotates in the circumferential direction in the second track groove 322, the opening angle of the door body 2 can be increased, and the structure that the shaft body 311 slides along the first track groove 321 and then rotates in the second track groove 322 can avoid that the groove body 32 occupies more space, so that the hinge assembly 3 is better arranged. When the groove 32 is provided on the door 2, the thickness of the door 2 can be reduced because the size of the groove 32 is reduced to occupy less door space.

In order to realize the rotation of the shaft body 311 in the second track groove 322, the second track groove 322 at least comprises a space for the rotation of the shaft body 311, and the rotation space can be a whole circle or a pair of fan-shaped spaces which are oppositely arranged.

As shown in fig. 4 to 8, in order to better rotate the shaft body 311 in the second track groove 322, a pair of arc surfaces 313 are correspondingly disposed on the outer wall of the shaft body 311, the arc surfaces 313 and the limiting portions 33 are arranged along the circumferential direction of the shaft body 311, and the pair of arc surfaces 313 are disposed opposite to each other along the length direction of the cross section of the shaft body 311. The arc surface 313 is matched with the inner circular wall of the second track groove 322, and when the shaft body 311 rotates along the second track groove 322, the arc surface 313 moves by being attached to the inner wall of the second track groove 322.

In the above embodiment, when the second track groove 322 is circular, when the space in the second track groove 322 for the rotation of the shaft body 311 is only fan-shaped, the arc surface 313 of the shaft body 311 is adapted to the curvature of the fan-shaped space in the second track groove 322, and the arc surface 313 is arranged on the shaft body 311 and the adapted curved surface is arranged in the second track groove 322, so that the shaft body 311 rotates stably in the second track groove 322.

In one embodiment, as shown in fig. 21-23, the second track groove 322 is a circle in communication with the first track groove 321, and the second track groove 322 has an outer diameter dimension greater than the maximum outer diameter dimension of the shaft body 311. The outer diameter of the circle where the second track groove 322 is located is larger than the width of the groove body of the first track groove 321, and it should be noted that the width of the groove body refers to the dimension of the second track groove 322 in the direction perpendicular to the extending direction. In addition, since the shaft body 311 is flat as a whole, the maximum dimension of the shaft body 311 in the longitudinal direction is smaller than the outer diameter dimension of the second track groove 322, so that the shaft body 311 can rotate in the second track groove 322 after sliding out of the first track groove 321.

The rotation of the shaft body 311 is achieved by increasing the size of the second track groove 322 in the above-described embodiment. Since the shaft body 311 is flat as a whole, when the shaft body 311 is turned in the second track groove 322, the shaft body 311 needs to enter the first track groove 321 from the second track groove 322 in the closing process of the door body 2, so how to realize the reset of the shaft body 311 in the whole in the first track groove 321 in the closing process of the door body 2 is an important problem to be solved.

In a specific embodiment, as shown in fig. 3 to 28, the hinge assembly further has a rotation limiting portion 34, where the rotation limiting portion 34 is disposed in the second track groove 322, the rotation limiting portion 34 is used to limit the rotation angle of the shaft body 311 in the second track groove 322, and the rotation limiting portion 34 is disposed to limit the rotation angle of the shaft body 311 in the second track groove 322, so as to avoid the shaft body 311 from realizing 360 ° free rotation in the second track groove 322, and in the closing process of the door body 2, the shaft body 311 can be reset and rotated from the second track groove 322 along the rotation track, and when the shaft body 311 is reset and rotated to the position opposite to the first track groove 321 in the length direction of the shaft body 311, the shaft body 311 can smoothly enter into the first track groove 321 from the second track groove 322 and be reset and slid to the initial position of the first track groove 321 along with further closing of the door body 2.

The arrangement of the rotation limiting part 34 avoids the free rotation of the shaft body 311 in the first track groove 321, so that the shaft body 311 can be reset and moved into the first track groove 321, and the control of the door body when closed is facilitated.

In order to better limit the rotation angle of the shaft body 311, as shown in fig. 19, 24 and 28, a shaft body rotation limiting portion 312 is provided on the shaft body 311, and the shaft body rotation limiting portion 312 is used for abutting against the rotation limiting portion 34 to limit the shaft body 311 to rotate in the second track groove 322 in the circumferential direction. In the present embodiment, the axial rotation of the shaft body 311 is restricted by abutting against the rotation restricting portion 34.

As shown in fig. 2-8 and fig. 11-18, the rotation limiting portion 34 is disposed on the inner wall of the second track groove 322 and is used to abut against the shaft rotation limiting portion 312 to limit the rotation of the shaft 311 in the circumferential direction, and in this embodiment, the inner wall of the second track groove 322 is directly used as the rotation limiting portion 34. In other embodiments, as shown in fig. 19-28, the rotation limiting portion 34 includes a rotation post disposed on an inner wall of the second track groove 322 or a protrusion disposed on an inner wall of the second track groove 322, and the rotation limiting portion 34 protrudes from the inner wall of the second track groove 322 into the second track groove 322.

With the arrangement in which the rotation restricting portion 34 is directly provided on the inner wall of the second track groove 322, there are different ways of hinge assembly due to the different structures of the second track groove 322, such as the circular or irregular shape of the entire cross section of the second track groove 322. Meanwhile, since the shaft body 311 has different structures, the shaft body rotation limiting portion 312 may be provided in various manners, for example, the shaft body rotation limiting portion 312 may be provided on an outer wall of the shaft body 312, may be provided in parallel with the limiting portion 33, or may be provided to overlap with the limiting portion 33. It can be seen that various hinge assemblies can be combined by the different ways of the second track groove 322 and the different ways of the rotation shaft 31. The following description will be mainly given by way of example of several more typical embodiments.

As shown in fig. 1 to 8 and 15, as to the first shaft body 313, the shaft body rotation limiting portion 312 is also disposed on the outer wall of the shaft body 311, and the shaft body rotation limiting portion 312 is overlapped with the limiting portion 33, the cross section of the shaft body 311 has a length direction and a width direction, the outer wall of the shaft body 311 is provided with a pair of arc surfaces 313, the pair of arc surfaces 313 are disposed on two sides of the shaft body 311 opposite to each other along the length direction of the cross section of the shaft body 311, the limiting portion 33 is a pair of abutment surfaces disposed opposite to each other along the width direction of the cross section of the shaft body 311, the whole abutment surfaces are plane, and the abutment surfaces serve as the shaft body rotation limiting portion 312 to abut against the rotation limiting portion 34. So as to realize the limitation of the rotation angle of the shaft body 311 when the position limiting part 33 is opposite to the rotation limiting part 34 when the shaft body 311 rotates in the circumferential direction in the second track groove 322.

It will be appreciated that, for the first type of shaft body 313, the corresponding rotation shaft 31 has a different structure when the shaft body 313 is disposed on the door body 2 and when the shaft body 313 is disposed on the housing 1, and fig. 1 to 8 are schematic structural views of the rotation shaft 31 when the shaft body 313 is disposed on the housing 1, and fig. 15 is a schematic specific structural view of the rotation shaft 31 when the shaft body 313 is disposed on the housing 1.

As shown in fig. 14, when the first shaft body 313 is disposed on the door body 2, the corresponding second track groove 322 may be a circular shape as a whole, and the rotation limiting portion 34 includes a protrusion portion disposed on an inner wall of the second track groove 322, and the protrusion portion has a rotation abutting surface for abutting against the shaft body rotation limiting portion 312. The protruding portion extends outwards from the inner wall of the second track groove 322. When the shaft body 311 rotates in the second track groove 322, the limit of the rotation angle of the shaft body 311 is formed after the shaft body is abutted against the protruding part.

As for the first type shaft body 313, when the shaft body 313 is provided on the door body 2, the second track groove 322 may also be an irregularly shaped groove body as shown in fig. 13, in which case the second track groove 322 is provided on the case body 1. When the first shaft body 313 is provided on the case 1, the second track groove 322 is provided on the door body 2 as shown in fig. 1 to 8, and the second track groove 322 takes an irregular shape.

Specifically, fig. 1-3 and fig. 11-13 show an irregularly shaped second track groove 322, fig. 1-3 show an embodiment in which the groove 32 is disposed on the door 2, and fig. 11-13 show an embodiment in which the groove 32 is disposed on the box 1.

The inner wall of the second track groove 322 comprises a pair of arc-shaped inner walls 3221 with opposite positions, the arc centers of the arc-shaped inner walls 3221 are coincident, and the arc-shaped inner walls 3221 are matched with the arc-shaped surface 313; the curvature of the arcuate inner wall 3221 corresponds to the curvature of the arcuate surface 313; the shaft body 311 rotates between a pair of arc-shaped inner walls 3221; the rotation limiting portion 34 is disposed beside the arc-shaped inner wall 3221, and the rotation limiting portion 34 includes a rotation abutment surface for abutting against the shaft rotation limiting portion 312 to limit the shaft 311 from further rotating in the second track groove 322.

The second trajectory groove 322 may be regarded as a space left after the protrusion is provided in one circular hole (as shown in fig. 14 and 21 to 23), which is used for the rotation of the shaft body 311.

As shown in fig. 3, two rotation limiting portions 34 are provided, and the two rotation limiting portions 34 are arranged in a central symmetry manner with the center of the second track groove 322 as a symmetry point. The second track groove 322 is centered at a center of arc common to the two arcuate inner walls 3221.

As can be seen from fig. 3, the second track groove 322 includes a main body section 3222 and a rotating section 3223, wherein the main body section 3222 is opposite to the first track groove 321 and is an extension of the first track groove 321 in the second track groove 322, and the rotating section 3223 is configured to avoid the shaft body 311 when the shaft body 311 rotates; the rotation sections 3223 are provided in two, and the two rotation sections 3223 are arranged in central symmetry with the center of the main body section 3222 as a symmetry point.

As shown in fig. 3, the broken line portion indicates an edge of the shaft body 311 after initially entering the second track groove 222, and the second track groove 222 may be divided into a main body section 3222 and a rotation section 3223, and the main body section 3222 is located opposite to the first track groove 321 and may be regarded as an extension portion of the first track groove 321 within the second track groove 322.

After the shaft body 311 slides out of the first track groove 321 as shown in fig. 5, the shaft body 311 moves into the main body section 3222 in the second track groove 322, at this time, the shaft body 311 does not rotate in the second track groove 322, and then, as the door body 2 is further opened, the shaft body 311 rotates in the circumferential direction in the second track groove 322 as shown in fig. 6 to 7, and after the rotation, part of the shaft body 311 is located in the rotating section 3223. After the shaft body rotation limiting portion 312 of the shaft body 311 abuts against the rotation limiting portion 34, the shaft body 311 is finally rotated in place (shown in fig. 8).

The first type of shaft 313, which is flat as a whole, may be limited to resetting when the shaft 313 is closed by limiting the specific structure of the shaft 313. Specifically, as shown in fig. 29, the solid-line shaft body 311 shows a schematic position of the shaft body 311 before the shaft body 311 is not rotated in the second track groove 322, and the broken-line shaft body 311 shows a schematic position of the shaft body 311 when the shaft body 311 is rotated to the maximum position in the second track groove 322.

The arc surface 313 intersects with the cross section of the shaft body 311 to form an arc, and the central angle corresponding to the arc is alpha; the angle β by which the shaft body 311 rotates in the circumferential direction in the second trajectory groove 222 is not greater than the complement angle of α.

Since the shaft body 311 is flat as a whole and the two arc surfaces 313 disposed opposite to each other of the shaft body 311 are arranged in the length direction, the central angle α corresponding to the arc formed by the arc surfaces 313 on the cross section is generally smaller than 90 °, so the complementary angle of the central angle α generally needs to be larger than 90 °, and in this embodiment, if the angle β of the shaft body 311 rotating in the axial direction is larger than the complementary angle α, the angle of the shaft body 311 rotating in the second track groove 322 is indicated to be larger than 90 °.

Since the arcuate surfaces 313 are disposed opposite to each other on the shaft body 311, if the arcuate surfaces 313 can rotate in the second track groove 322 by an angle greater than 90 °, the angle at which the two opposite arcuate surfaces 313 travel in the second track groove 322 exceeds 360 °, which means that the shaft body 311 can freely rotate 360 ° in the second track groove 322, and thus the structural design can cause difficulty in resetting the shaft body 311.

In the present embodiment, the shaft body 311 can be reset and moved from the second track groove 322 to the first track groove 321 in the door closing process by limiting the rotation angle, so that the door body can be closed better.

For the second shaft body 313, as shown in fig. 16 to 19, the shaft body rotation limiting portion 312 is directly disposed on the outer wall of the shaft body 311, the shaft body rotation limiting portion 312 is disposed in parallel with the limiting portion 33, and the shaft body rotation limiting portion 312 and the limiting portion 33 are arranged along the circumferential direction of the shaft body 311.

The shaft body rotation limiting portions 312 and the limiting portions 33 are arranged along the circumferential direction of the shaft body 311, and the shaft body rotation limiting portions 312 and the limiting portions 33 are provided with a pair, the pair of shaft body rotation limiting portions 312 are arranged in a central symmetry manner with the central axis of the shaft body 311 as a symmetry point, and the pair of limiting portions 33 are arranged in a central symmetry manner with the central axis of the shaft body 311 as a symmetry point. The cross section of the shaft body 311 is arranged in a substantially diamond shape.

It will be appreciated that, for the second shaft body 313, the corresponding rotation shaft 31 has different structures when the shaft body 313 is disposed on the door body 2 and when the shaft body 313 is disposed on the box body 1, and fig. 16-19 are schematic structural views of the rotation shaft 31 when the shaft body 313 is disposed on the door body 2, and the specific structure of the rotation shaft 31 when the shaft body 313 is disposed on the box body 1 is also a conventional replacement that is easily considered by those skilled in the art, and will not be described in detail herein.

The second track groove 322 corresponding to the second shaft body 313 may have an irregular shape corresponding to the first shaft body 313, or may have a protrusion on the inner wall of the circular second track groove 322 to limit the shaft body 313. Specific structural arrangements may be referred to the above description and will not be repeated here. Another way of second track groove 322 may also be used for the second shaft body 313. As shown in fig. 19, since the adjacent stopper 33 and the shaft rotation stopper 312 are provided on the outer wall of the shaft 313 at the same time, one protrusion is formed between the stopper 33 and the shaft rotation stopper 312.

As shown in fig. 16, the second track groove 322 includes a main body section 3222 and a rotating section 3223, the main body section 3222 is opposite to the first track groove 321 and is an extension of the first track groove 321 in the second track groove 322, and the rotating section 3223 is configured to provide an avoidance space for the rotation of the shaft body 311 when the shaft body 311 rotates; the rotation sections 3223 are provided in two, and the two rotation sections 3223 are arranged in central symmetry with the center of the main body section 3222 as a symmetry point.

As shown in fig. 16, the broken line position of the drawing indicates the boundary of the shaft body 313 when the shaft body 313 enters into the second track groove 322 without rotation, and the broken line position and part of the inner wall of the second track groove 322 constitute the main body section 3222. The shape of the main body section 3222 is adapted to the first track groove 321, and the width of the main body section 3222 corresponds to the width of the first track groove 321. The rotating section 3223 may be regarded as a groove formed concavely outward from the inner wall of the main body section 3222.

As shown in fig. 16, in the process of sliding the shaft body 313 along the first track groove 321, the limiting part 33 slides against the inner wall of the first track groove 321 so as to prevent the shaft body 313 from rotating in the first track groove 321 along the circumferential direction of the shaft body 313, so that the shaft body 313 can only slide in the first track groove 321.

As shown in fig. 17, when the shaft body 313 slides into the second track groove 321 and does not start to rotate, the protruding portion formed between the limiting portion 33 and the shaft body rotation limiting portion 312 on the outer wall of the shaft body 313 is just located in the rotation section 3223, and the rotation section 3223 is provided to enable the shaft body 313 to rotate.

As shown in fig. 18, when the shaft body 313 rotates to the point that the shaft body rotation limiting portion 312 on the outer wall of the shaft body 313 abuts against the rotation limiting portion 34 formed on the inner wall of the main body section 3222, the limiting of the angular rotation of the shaft body 313 is completed.

As shown in fig. 24, the third shaft body 313 is provided with a rotation groove 314 in the rotation shaft 31, the rotation groove 314 is provided in the shaft body 313 and is provided to open in the radial direction of the shaft body 313, the rotation groove 314 has a fan-shaped cross section as a whole, a pair of rotation groove inner walls provided in opposition to each other in the circumferential direction of the shaft body 311 are provided in the rotation groove 314, and the shaft body rotation limiting portion 312 is provided in the rotation groove inner walls. The rotation limiting portion 34 of the third shaft body 313 is not provided on the outer wall of the shaft body 313, but a groove body is provided on the shaft body 313, and the rotation limiting portion 34 is provided on the inner wall of the groove body.

For the third shaft body 313, a certain requirement is required for the structure of the second track groove 322, and a rotating column is required to be arranged in the second track groove 322, and the rotating column is matched with the corresponding rotating groove 314. In a specific embodiment, as shown in fig. 20-28, the rotation limiting portion 34 includes a rotation post extending from an inner wall of the second track groove 322 and into the second track groove 322.

When the shaft body 311 slides into the second track groove 322, the position of the rotating column is just opposite to that of the rotating groove 314, and the rotating column can be accommodated in the rotating groove 314 and relatively rotate along the circumferential direction of the shaft body 311; the opening size of the spin slot 314 is larger than the size of the spin column, thereby enabling the spin column to rotate relatively within the spin slot 314.

In an embodiment, in order to facilitate the sliding out of the first track groove 321, the rotating groove 314 can be smoothly abutted with the rotating post, and the rotating post extends from the inner wall of the second track groove 322 towards the end of the first track groove 321.

Since the rotary groove 314 has two rotary groove inner walls opposing in the circumferential direction of the shaft body 313, the rotary column can be rotated relatively between the two rotary groove inner walls within the rotary groove 314.

For the third shaft body 313, the corresponding second track groove 322 may have a circular cross section as shown in fig. 21 to 23. But may also be irregular or otherwise shaped.

Similarly, for the third shaft body 313, the corresponding rotation shaft 31 has a different structure when the shaft body 313 is disposed on the door body 2 and when the shaft body 313 is disposed on the box body 1, and the structure of the rotation shaft 31 when the shaft body 313 is disposed on the door body 2 is shown in fig. 24, and the specific structure of the rotation shaft 31 when the shaft body 313 is disposed on the box body 1 is also a conventional replacement that is easily considered by those skilled in the art, and will not be described in detail herein.

As shown in fig. 28, the rotation shaft 31 is provided with a rotation groove 314 similar to the third shaft 313, the rotation groove 314 has a pair of rotation groove inner walls facing each other in the circumferential direction of the shaft 311, and the shaft rotation limiting portion 312 is provided on the rotation groove inner walls. Further, unlike the third shaft body 313, the shaft body rotation limiting portion 312 is provided not only on the inner wall of the rotation groove but also on the outer wall of the shaft body 313. The shaft rotation limiting portion 312 and the limiting portion 33 are arranged along the circumferential direction of the shaft 313.

The shaft body rotation limiting portion 312 and the limiting portion 33 are arranged in parallel, and the shaft body rotation limiting portion 312 and the limiting portion 33 are provided with two, and the two shaft body rotation limiting portions 312 and the two limiting portions 33 are symmetrical with the central axis of the shaft body 312 as a symmetrical point.

The rotation angle of the shaft body 313 can be limited by either one of the shaft body rotation limiting parts 312 at two positions for the fourth shaft body 313, or the rotation angle of the shaft body 313 can be limited by adopting the shaft body rotation limiting parts 312 at two different positions at the same time.

The second track groove 322 corresponding to the third shaft body 313 can be used when the shaft body rotation limiting portion 312 arranged on the inner wall of the rotation groove is used for limiting the rotation angle of the shaft body 313, and the specific structure can be referred to above, and will not be described herein. When the rotation angle of the shaft body 313 is simultaneously limited by the shaft body rotation limiting parts 312 at two different positions, a certain requirement is placed on the structure of the second track groove 322.

As shown in fig. 25 to 27, for the fourth shaft body, since the adjacent limiting portion 33 and the shaft body rotation limiting portion 312 are simultaneously provided on the outer wall of the shaft body 313, a protrusion is formed between the limiting portion 33 and the shaft body rotation limiting portion 312, and during the sliding of the shaft body 313 along the first track groove 321, the limiting portion 33 slides against the inner wall of the first track groove 321 so as to prevent the shaft body 313 from rotating in the first track groove 321 in the circumferential direction of the shaft body 313, so that the shaft body 313 can only slide in the first track groove 321.

When the shaft body 313 slides into the second track groove 321 and does not start to rotate, the protruding portion formed between the limiting portion 33 and the shaft body rotation limiting portion 312 on the outer wall of the shaft body 313 is just located in the rotation section 3223, and it should be noted that at this time, the rotating column in the second track groove 322 is just opposite to the position of the rotating groove 314, and the rotating column is accommodated in the rotating groove 314 and can rotate relatively in the rotating groove 314. The rotation section 3223 is provided to rotate the shaft body 313, and when the shaft body 313 rotates to the position where the shaft body rotation limiting portion 312 on the outer wall of the shaft body 313 abuts against the rotation limiting portion 34 formed on the inner wall of the main body section 3222, the shaft body 313 also rotates to the position where the shaft body rotation limiting portion 312 on the inner wall of the rotation groove 314 abuts against the rotation column.

In a specific embodiment, the movable shaft 31 may be provided on the door body 2 or on the case body 1. As shown in fig. 1 to 8, when the movable shaft 31 is disposed on the case 1, the groove 32 is correspondingly disposed on the door 2; as shown in fig. 9 to 29, when the movable shaft 31 is provided on the door body 2, the groove body 32 is correspondingly provided on the case body 1.

As shown in fig. 1 to 8, when the movable shaft 31 is disposed on the case 1, in order to facilitate the disposition of the movable shaft 31, the hinge assembly 3 further has a hinge plate 35 disposed on the case 1, the movable shaft 31 has a mounting portion 315 fixed to the hinge plate 35, and the shaft body 311 and the mounting portion 315 are arranged in the axial direction of the shaft body 311.

The cell body 32 is directly set up on the door body 2, and the bottom or the top of the door body 2 directly forms up or the groove that opening set up down, and the axis body 311 location is in the groove, and the installation of the door body 2 on box 1 of realization that like this structure is fixed be convenient for the loading or the dismantlement of the door body 2 of more convenient.

As shown in fig. 1, when the door 2 is in the closed state, the shaft 311 is positioned at the start end of the first track groove 321, and the start end of the first track groove 321 is disposed relatively close to the door front wall 21. The end of the first trajectory groove 321 is located closer to the door side wall 22 and the box front wall 12 than the beginning.

As shown in fig. 1, in the closed state of the door body 2, since the start end of the first trajectory groove 321 is located relatively close to the door front wall 21 and relatively far from the door side wall 22, and the start end of the first trajectory groove 321 is located further from the tank front wall 11 and the tank side wall 12 than the end of the first trajectory groove 321. The door body 2 slides from the beginning to the end along the first trajectory groove 321 with respect to the shaft body 311 during the opening. When the door 2 is in the closed state, the first trajectory groove 321 is provided so as to extend in a direction gradually approaching the tank front wall 11 and the tank side wall 12, and the extending direction of the first trajectory groove 321 is the entire direction moving from the start end to the end of the first trajectory groove 321. The first trajectory groove 321 is provided such that the door body 2 as a whole has a movement tendency to move relatively in a direction away from the tank side wall 12 and away from the tank front wall 11 during the opening of the door body 2. Taking the door body 2 as a reference, the shaft body 313 has a motion component that gradually moves relatively toward away from the door front wall 21 and toward the door side wall 22.

In the initial stage of opening the process, the door outer edge 23 and the door inner edge 24 are located at positions far away from the shaft body 311, so that the door outer edge 23 is prevented from being influenced by interference of external environment pieces and the door inner edge 24 is prevented from being influenced by interference of the box body 1, the first track groove 321 is integrally extended towards the position where the door inner edge 24 is located, the door body 2 is obliquely pulled out in the oblique direction in the structure setting in the opening process, and after the door body 2 moves to a position convenient to rotate and open, further subsequent rotation is achieved.

As shown in fig. 2, the first track groove 321 is integrally provided with a curved extending portion, and the first track groove 321 includes a first groove section and a second groove section that are sequentially provided along the extending direction of the first track groove 321, and the second groove section is located between the second track groove 322 and the first groove section.

In the opening process of the door body 2, along with the increase of the opening angle of the door body 2, the shaft body 311 slides along the first groove section and the second groove section in sequence. The first groove section and the second groove section are not clearly defined, and only the sliding process of the shaft body 311 in the first track groove 321 is indicated.

When the first groove section slides, the movement amplitude of the shaft body 311 on the side wall 22 relatively far away from the door front wall 21 is larger than that of the shaft body 311 on the side wall 22 relatively close to the door; the door 2 moves relatively far from the front wall 11 of the box to a greater extent than the door 2 moves relatively far from the side wall 12 of the box.

When the first slot section is moved, the door body 2 is more prone to move in a direction away from the case 1 than to move away from the external environmental member. I.e. the door body 2 is more prone to move forward than to move inward. Here, the front means that the door body 2 moves away from the case 1, and inward movement means that the door body 2 moves away from the external environment.

When the second groove section slides, the movement amplitude of the shaft body 311 on the side wall 22 relatively far away from the door front wall 21 is smaller than that of the shaft body 311 on the side wall 22 relatively close to the door; the extent of movement of the door 2 away from the front wall 11 of the box is less than the extent of movement of the door 2 away from the side wall 12 of the box. I.e. when the second channel section is moved, the door body 2 is more prone to move away from the external environmental element than to move away from the box body 1. I.e. the door body 2 is more prone to move inwards than to move forwards.

The above structure is arranged to enable the door body 2 to move forward more than inward when the shaft body 311 slides along the first groove section before the door body 2 is opened to the first angle; when the door body 2 is opened from the first angle to the second angle, the shaft body 311 slides along the second groove section, and the inward moving distance of the door body 2 is larger than the forward moving distance, wherein the second angle is larger than the first angle.

The arrangement of the structure enables the whole first track groove 321 to be in arc extending arrangement, and the arc formed by the first track groove 321 is arched towards the direction deviating from the door outer edge 23, and the whole first track groove 321 is in extending arrangement towards the direction gradually approaching the door side wall 22 and gradually separating from the door front wall 21.

The slope of the extending direction of the first slot section is larger than that of the second slot section, and the slope of the extending direction of the first track groove 321 is gradually reduced along the extending direction of the first track groove 321, with the door outer edge 23 as the center, the plane of the door front wall 21 is the x direction, and the plane of the door side wall 22 is the y direction. It should be noted that the extending direction of the first track groove 321 is the extending direction of the tangent line of the curve where the first track groove 321 is located.

While the relative movement of the shaft body 311 throughout the first trajectory groove 321 is relatively gradual extending away from the door front wall 21 and toward the door side wall 22, the first groove section is more prone to extend away from the door front wall 21 and the second groove section is more prone to extend beyond the door side wall 22. Since the door inner edge 24 is farther from the shaft body 311 in the initial stage of the door opening, more consideration is required to be given to the interference of the door inner edge 24 with the case 1 in the initial stage, and thus more movement of the door body 2 in a direction away from the case 1, that is, movement of the shaft body in a direction away from the door front wall 21 is required.

After opening to a certain angle, more consideration is required for interference of external environmental members, so that the door body 2 is moved more inward, that is, the shaft body 311 is moved more relatively toward the door sidewall 22. The arrangement of the structure can carry out finer control on the opening process of the door body 2 according to the actual requirement in the opening process of the door body 2, and can better avoid the interference of the door body 2 in the opening process.

In the initial stage of opening the door body 2, the door outer edge 23 is gradually moved toward the plane near the side wall 12 of the box, and then, with further opening of the door body 2, the door outer edge 23 is gradually moved toward the plane far from the side wall 12 of the box.

As shown in fig. 9 to 28, when the movable shaft 31 is disposed on the door 2, the corresponding slot 32 is disposed on the case 1, and for convenience of the disposition of the slot 32 on the case 1, the hinge assembly further has a hinge plate 35 disposed on the case 1, the slot 32 is disposed on the hinge plate 35, the movable shaft 31 has a mounting portion 315 fixedly connected to the door 2, and the shaft 311 and the mounting portion 315 are disposed along an axial direction of the shaft 311.

As shown in fig. 15, 19, 24 and 28, the movable shaft 31 is provided with an upper limiting plate 316 and a lower limiting plate 317, the shaft body 311 is disposed between the upper limiting plate 316 and the lower limiting plate 317, the upper limiting plate 316 is used to abut against the upper side of the hinge plate 35, and the lower limiting plate 317 is used to abut against the lower side of the hinge plate 35.

The movable shaft 31 is mounted and positioned in the axial direction on the hinge plate 35 by the arrangement of the upper limit plate 316 and the lower limit plate 317 in the axial direction.

The slot 32 is directly provided on the hinge plate 35 and penetrates the hinge plate 35 in the vertical direction, and the bottom or top of the door 2 is directly formed with a slot provided upward or downward opening, and the shaft 311 is positioned in the slot.

As shown in fig. 11 and 16, in the closed state of the door 2, the shaft body 311 is positioned at the start end of the first trajectory groove 321, and the start end of the first trajectory groove 321 is positioned closer to the tank side wall 12 and the tank front wall 11 than the end of the first trajectory groove 321.

The door body 2 slides relatively along the first track groove 321 during opening, so that the door body 2 as a whole moves relatively in a direction away from the side wall 12 of the box and away from the front wall 11 of the box, that is, the door body 2 moves inward and moves toward the front side.

As shown in fig. 9 to 11, in the closed state of the door 2, the shaft body 31 is relatively located closer to the tank side wall 12 and to the tank front wall 11, while the shaft body 31 is also located closer to the door side wall 22 and away from the door front wall 21 in the initial stage of closing of the door 2.

In order to avoid the influence of the interference of the external environmental member on the door outer edge 23 and the influence of the interference of the case 1 on the door inner edge 24, the first trajectory groove 321 is provided to extend in a direction away from the case side wall 12 and away from the case front wall 11 as a whole.

As shown in fig. 13 and 14, the first track groove 321 is integrally provided with a curved line, the first track groove 321 includes a first groove section and a second groove section sequentially provided along the extending direction of the first track groove 321, and the second groove section is located between the second track groove 322 and the first groove section. In the opening process of the door body 2, along with the increase of the opening angle of the door body 2, the shaft body 311 slides along the first groove section and the second groove section in sequence. The first groove section and the second groove section are not clearly defined, and only the sliding process of the shaft body 311 in the first track groove 321 is indicated.

The movement of the shaft body 311 relatively far from the tank side wall 12 is greater than the movement of the shaft body 311 relatively far from the tank front wall 11 when sliding along the first tank section, i.e. the door body 2 is more prone to move away from the tank side wall 12 than in the direction away from the tank body 1 when the first tank section is moved, i.e. the door body 2 is more prone to move away from the external environmental member. That means that the door body 2 is more prone to move inwards than to move forward.

The movement of the shaft 311 relatively far from the tank front wall 11 is relatively larger than the movement of the shaft 311 relatively far from the tank side wall 12 when sliding along the second groove section, i.e. the door 2 tends to move further away from the tank front wall 12 than when moving along the second groove section. I.e. the door body 2 is more prone to move forward than to move inward.

Before the door body 2 is opened to the first angle, when the shaft body 311 slides relatively along the first groove section, the distance of the door body 2 moving relatively forward is smaller than the distance of the door body moving inwards; when the door body 2 is opened from the first angle to the second angle, the shaft body 311 slides along the second groove section, and at this time, the inward moving distance of the door body 2 is smaller than the forward moving distance, wherein the second angle is larger than the first angle.

The arrangement of the structure enables the whole first track groove 321 to be in arc extension arrangement, and the arc formed by the first track groove 321 is arched towards the direction deviating from the door outer edge 23, and the whole first track groove 321 is in extension arrangement towards the direction gradually deviating from the box side wall 12 and the box front wall 11.

The coordinate system is established by taking the outer edge 23 of the door as the center, the plane of the front wall 21 of the door as the x direction and the plane of the side wall 22 of the door as the y direction, and the slope of the extending direction of the first groove section is smaller than that of the second groove section. The slope of the extending direction of the first track groove gradually increases with the extending direction of the first track groove 321. It should be noted that, since the first track line 321 is curved as a whole, the extending direction of the first track groove 321 is the extending direction of the tangent line of the curve where the first track groove 321 is located.

In the embodiment in which the shaft body 311 is provided on the door body 2 and the groove body 32 is provided on the case body 1, the door body 2 is further apart from the shaft body 31 than the door inner edge 24 is from the door outer edge 23 in the initial stage of opening. The amplitude of the movement of the door outer edge 23 is thus greater in the initial phase of opening of the door body than in the door inner edge 24, which means that the door outer edge 23 is more susceptible to interference by external environmental elements than in the door inner edge 24.

Thus, when the first channel section is moved, the door body 2 is more prone to move inwardly, i.e. away from the side wall 12 of the box, than the door body 2 is to move away from the front wall 11 of the box, i.e. the door body 2 is more prone to move away from the external environmental element to avoid the door outer edge 23 being affected by interference of the external environmental element.

At the time of the second groove section movement, the door body 2 is more prone to move toward the leading side than the door body 2 is to move toward the direction away from the tank side wall 12, that is, more prone to move toward the direction away from the tank front wall 12, that is, the door body 2 is more prone to move toward the direction away from the tank body 1, so as to avoid the door inner edge 24 from being affected by interference of external environmental pieces. The setting of above-mentioned structure can carry out finer control to the opening process of door body 2 according to the actual need of door body 2 opening in-process, can be better avoid door body 2 to receive the interference in the opening process.

In the initial stage of opening the door body 2, the door outer edge 23 is gradually moved toward the plane near the side wall 12 of the box, and then, with further opening of the door body 2, the door outer edge 23 is gradually moved toward the plane far from the side wall 12 of the box. It should be noted that, in this context, the movement toward or away from the tank side wall 12 refers to the movement toward or away from the plane in which the tank side wall 12 lies. Accordingly, movement elsewhere herein with respect to approaching or moving away from the tank front wall 11 refers to movement closer to or away from the plane in which the tank front wall 11 lies.

It is understood that the refrigeration appliance is a refrigerator and is an embedded refrigerator.

The above list of detailed descriptions is only specific to practical embodiments of the present utility model, and they are not intended to limit the scope of the present utility model, and all equivalent embodiments or modifications that do not depart from the spirit of the present utility model should be included in the scope of the present utility model.

Claims (16)

1. A hinge assembly comprising a movable shaft and a slot; the groove body comprises a first track groove and a second track groove; the movable shaft comprises a shaft body which sequentially moves in the first track groove and the second track groove;

The shaft body is in sliding fit with the first track groove, and the hinge assembly further comprises a limiting part for limiting the shaft body to rotate in the first track groove along the circumferential direction; the shaft body can rotate in the second track groove along the circumferential direction;

the hinge assembly is further provided with a rotation limiting part which is arranged in the second track groove to limit the rotation angle of the shaft body in the second track groove.

2. The hinge assembly of claim 1, wherein the limiting portion is disposed on an outer wall of the shaft body, and the limiting portion includes an abutment surface for abutting against an inner wall of the first track groove to limit rotation of the shaft body in the first track groove.

3. The hinge assembly according to claim 2, wherein the shaft body is provided with a shaft body rotation limiting portion, and the shaft body rotation limiting portion abuts against the rotation limiting portion to limit an angle of circumferential rotation of the shaft body in the second track groove.

4. The hinge assembly of claim 3, wherein the shaft rotation limiting portion is disposed on an outer wall of the shaft, and the rotation limiting portion is disposed on an inner wall of the second track groove;

the shaft body rotation limiting parts and the limiting parts are distributed along the circumferential direction of the shaft body or the rotation limiting parts and the limiting parts are overlapped in position.

5. The hinge assembly of claim 4, wherein the shaft body is generally flat in cross-section and has a length direction and a width direction; the outer wall of the shaft body is also provided with a pair of arc-shaped surfaces, the arc-shaped surfaces and the limiting parts are distributed along the circumferential direction of the shaft body, and the arc-shaped surfaces are oppositely arranged along the length direction.

6. The hinge assembly of claim 5, wherein the second track groove is circular, a diameter of the second track groove is not less than a maximum dimension of the shaft body in a length direction, and the rotation limiting portion includes a protrusion formed at an inner wall of the second track groove.

7. The hinge assembly of claim 5, wherein the inner wall of the second track groove comprises a pair of opposing arcuate inner walls, the centers of the arcuate inner walls of the pair being coincident, the arcuate inner walls being adapted to the arcuate surfaces; the curvature of the arc-shaped inner wall is consistent with the curvature of the arc-shaped surface; the shaft body rotates between a pair of arc-shaped inner walls; the rotation limiting part is arranged at the side of the arc-shaped inner wall.

8. The hinge assembly according to claim 7, wherein two rotation limiting portions are provided, and the two rotation limiting portions are disposed in central symmetry with a center of the second track groove as a symmetry point.

9. The hinge assembly according to claim 5, wherein the rotation limiting portions and the limiting portions are provided with a pair, the pair of rotation limiting portions are provided in central symmetry with respect to a central axis of the shaft body as a symmetry point, and the pair of limiting portions are provided in central symmetry with respect to the central axis of the shaft body as a symmetry point.

10. The hinge assembly of claim 1, wherein the second track groove includes a body section opposite the first track groove and extending within the second track groove, and a rotating section to clear the shaft when the shaft is rotated;

the two rotating sections are arranged in a central symmetry mode by taking the center of the main body section as a symmetry point.

11. A hinge assembly according to claim 3, wherein the rotation limiting portion comprises a rotation post extending from an inner wall of the second track groove toward an end of the first track groove, the shaft body is provided with a rotation groove, the rotation groove is opened in a radial direction of the shaft body, and the rotation post is accommodated in the rotation groove and rotates relatively in a circumferential direction of the shaft body;

The rotary groove is internally provided with a pair of rotary groove inner walls which are oppositely arranged along the circumferential direction of the shaft body, and the shaft body limiting part is arranged on the rotary groove inner walls.

12. The hinge assembly of claim 11, wherein the rotation slot has a generally fan-shaped cross section and the second track slot has a generally circular cross section.

13. A refrigeration apparatus comprising a cabinet having a receiving space, a door, and a hinge assembly according to any one of claims 1 to 12; the door body is pivoted to the box body through the hinge assembly so as to open or close the accommodating space; the box body is provided with a box side wall and a box front wall;

in the process of opening the door body, the shaft body sequentially moves in the first track groove and the second track groove; and the door body moves relatively in a direction away from the front wall of the box and away from the side wall of the box when the shaft body moves along the first track groove.

14. The refrigeration unit as recited in claim 13 wherein said hinge assembly further has a hinge plate disposed on said housing, said slot being disposed on said hinge plate and said shaft being disposed on said door;

the first track groove is integrally arc-shaped and integrally extends towards a direction gradually away from the front wall of the box and away from the side wall of the box.

15. The refrigeration unit as recited in claim 13 wherein said hinge assembly further has a hinge plate disposed on said housing, said shaft being disposed on said hinge plate, said slot being disposed on said door;

in the closed state of the door body, the first track groove is integrally arc-shaped and integrally extends towards the direction gradually approaching the front wall of the box and the side wall of the box.

16. The refrigeration appliance of claim 13 wherein the refrigeration appliance is a refrigerator.