CN115704258A - Embedded hinge device and refrigeration equipment - Google Patents

Abstract

The invention discloses an embedded hinge device and refrigeration equipment, wherein the hinge device comprises a hinge seat, a rotating part, a linkage part and a limiting part, wherein the rotating part comprises a first gear and a rotating body fixedly connected to the axis of the first gear; the linkage part comprises a transmission part and a second gear, the transmission part is simultaneously and rotatably connected with the hinge seat and the second gear, and the second gear is meshed with the first gear; the limiting part comprises a first limiting part and a second limiting part, the first limiting part is simultaneously and rotatably connected with the axis of the first gear and the axis of the second gear, and the second limiting part limits the linkage part and/or the rotating part to reciprocate to a preset track; the embedded hinge device has the advantages that the door body of the refrigeration equipment with the embedded structure is not collided with the box body and the cabinet body on the side surface when being opened, the size is smaller, the occupation of the space reserved for installing the hinge is reduced, and the volume utilization rate of the refrigeration equipment is improved.

Description

Embedded hinge device and refrigeration equipment

Technical Field

The invention relates to an embedded hinge device, in particular to refrigeration equipment with the embedded hinge device.

Background

The embedded hinge device is complex in general structure, large in occupied space, inconvenient to install, poor in use experience, poor in attractiveness, low in volume utilization rate, and high in price, the embedded hinge device is inconvenient to use, and the refrigeration equipment with the embedded hinge device is high in price and the sales volume of the refrigeration equipment is influenced.

Accordingly, there is a need for an improved embedded hinge device to solve the above problems.

Disclosure of Invention

In order to solve the problems in the prior art, an object of the present invention is to provide an embedded hinge device and a refrigeration device having the same.

To achieve the above object, an embodiment of the present invention provides an embedded hinge device, including:

a hinge mount;

the rotating part comprises a first gear and a rotating body fixedly connected to the axle center of the first gear;

the linkage part comprises a transmission part and a second gear, the transmission part is simultaneously and rotatably connected with the hinge seat and the second gear, and the second gear is meshed with the first gear;

the limiting part comprises a first limiting part and a second limiting part, the first limiting part is simultaneously rotatably connected to the axle center of the first gear and the axle center of the second gear, and the second limiting part limits the linkage part and/or the rotating part to reciprocate along a preset track.

As a further improvement of the present invention, the hinge seat includes a support member, the limiting portion includes a sleeve member slidably connected to the support member, and the rotating portion is rotatably connected to the sleeve member at an axis of the first gear.

As a further improvement of the present invention, one of the second limiting member or the supporting member includes a limiting slider, and the other includes a limiting groove, the limiting groove is disposed along a predetermined track, and the limiting slider is inserted into the limiting groove.

As a further improvement of the present invention, the supporting member includes a supporting body and a first limiting groove disposed on the supporting body, the second limiting member includes a second limiting groove and a plurality of limiting rods disposed in the second limiting groove, the first gear has a first limiting position and a second limiting position, when the first gear rotates between the first limiting position and the second limiting position, the supporting body is always at least partially disposed in the second limiting groove, and at least a portion of the limiting rods is always disposed in the first limiting groove.

As a further improvement of the present invention, the first limiting member, the second limiting member and the socket member are integrally formed.

As a further improvement of the present invention, the limiting portion includes a socket plate, a sliding groove surrounded by the socket plate, and a plurality of openings penetrating through the socket plate, the socket plate is sleeved outside the supporting member through the sliding groove, a first coaxial rotating shaft is disposed at an axis of the first gear, a second coaxial rotating shaft is disposed at an axis of the second gear, and the first rotating shaft and the second rotating shaft respectively penetrate through different openings.

As a further improvement of the present invention, the transmission portion includes a third rotating shaft, a fourth rotating shaft and a connecting rod, the connecting rod is rotatably connected to the hinge base through the third rotating shaft, and the connecting rod is rotatably connected to the second gear through the fourth rotating shaft.

As a further improvement of the invention, the preset track extends linearly in a direction away from the hinge seat.

As a further improvement of the present invention, the first gear has a first limit position and a second limit position, in the first limit position, the distance between the first gear and the third rotating shaft is shorter than the second limit position, and when the first gear is located at the first limit position, the extending direction of the connecting rod is perpendicular to the preset track direction.

As a further improvement of the present invention, the radius of the reference circle of the first gear is defined as a first radius, the radius of the reference circle of the second gear is defined as a second radius, and the product of the distance from the fourth rotating shaft to the axis of the second gear and the first radius is greater than the product of the distance from the third rotating shaft to the fourth rotating shaft and the second radius.

In order to achieve one of the above objects, an embodiment of the present invention provides a refrigeration device, which includes the above-mentioned embedded hinge device.

As a further improvement of the present invention, the hinge seat is fixedly connected to the box body, the rotating body is fixedly connected to the door body, the box body includes a side wall, a preset gap is provided on a side of the side wall away from the box body, the door body includes a corner far away from the box body, the corner is provided on a side of the door body close to the side wall, and a distance from an axis of the first gear to the corner is smaller than a sum of a distance from the axis of the first gear to the side wall and a thickness of the preset gap.

Compared with the prior art, the invention has the following beneficial effects: this embedded hinge means linkage portion and spacing cooperation realizes rotating when the portion of rotating moves along predetermineeing the orbit, does not collide with the cabinet body of box and side when having realized the refrigeration plant door body of embedded structure and open, and this embedded hinge means can be more flat for current hinge, and the size is littleer, and the space that occupies is little, and the occupation of the space of reserving for the installation hinge has been reduced when the appearance is pleasing to the eye, has improved refrigeration plant's volume rate of utilization.

Drawings

Fig. 1 is a schematic structural diagram of a refrigeration equipment door body according to an embodiment of the invention when closed;

fig. 2 is a schematic structural diagram of a hinge device when a refrigeration equipment door body according to an embodiment of the invention is closed;

FIG. 3 is an exploded view of a hinge assembly according to one embodiment of the present invention;

FIG. 4 is a cross-sectional view of the hinge assembly when the refrigeration unit door of one embodiment of the present invention is closed;

FIG. 5 is a top view of a refrigeration unit door section according to an embodiment of the present invention as opened;

FIG. 6 is an enlarged view of a portion of FIG. 5 at A;

FIG. 7 is a schematic structural view of a refrigeration device according to an embodiment of the present invention when a door body is fully opened;

FIG. 8 is a cross-sectional view of the hinge assembly with the refrigeration unit door fully open in accordance with one embodiment of the present invention;

100, a hinge device; 200. a box body; 201. a side wall; 202. presetting a gap; 300. a door body; 301. a corner; 400. a cabinet body; 10. a hinge mount; 11. a support body; 12. a first limit groove; 20. a rotating part; 21. a first gear; 22. rotating the body; 23. a first rotating shaft; 30. a second gear; 31. a second rotating shaft; 40. a transmission section; 41. a connecting rod; 42. a third rotating shaft; 43. a fourth rotating shaft; 50. a limiting part; 51. sleeving and connecting plates; 52. a sliding groove; 521. a second limit groove; 522. a limiting rod; 53. and (6) opening holes.

Detailed Description

The present invention will be described in detail below with reference to specific embodiments shown in the drawings. These embodiments are not intended to limit the present invention, and structural, methodological, or functional changes in accordance with the embodiments are within the scope of the present invention.

It will be understood that terms used herein such as "upper," "above," "lower," "below," and the like, refer to relative positions in space and are used for convenience in description to describe one element or feature's relationship to another element or feature as illustrated in the figures. The spatially relative positional terms may be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures.

An embodiment of the present invention provides an embedded hinge device and a refrigeration device having the same, where the embedded hinge device is used to implement embedded installation of a device, and particularly, for embedded installation of a refrigeration device, technical effects of convenience in installation and beautiful appearance are obtained.

The refrigeration equipment of the embodiment can be set into various refrigeration equipment such as a refrigerator, a wine cabinet, a freezer, an ice chest and the like, is particularly suitable for the refrigerator and is more directed at an embedded refrigerator, the side face of the refrigerator can be tightly attached to a wall body or a cabinet body 400, the refrigerator comprises a box body 200, a door body 300 and the embedded hinge device 100 of the embodiment, and the door body 300 of the embedded refrigerator can be flush with the outer surface of the cabinet body 400 on the side face to form an attractive whole. The door 300 is rotatably coupled to the cabinet 200 by the built-in hinge device 100 for opening and closing the cabinet 200.

In addition, the in-line hinge device 100 may be used for other apparatuses as long as the apparatus is provided with a body and a door body 300 openable or closable with respect to the body. The built-in hinge device 100 is used to connect the body of the appliance and the door 300, and enables the door 300 to be opened at a certain angle or closed with respect to the body, while enabling the installation of the appliance in a built-in type, such as a built-in microwave oven, a built-in dishwasher, a built-in oven, and the like.

To clearly express the positions and directions described in this embodiment, the direction in which the door 300 is opened is defined as front, the opposite direction is defined as back, and the direction of gravity is defined as down, the opposite direction is defined as up, the user stands in front of the refrigerator, and the two sides facing the refrigerator are the left and right sides, respectively, in fig. 1, 5, and 7, the process of opening the door 300 on the right side of the refrigerator is taken as an example for explanation.

The recessed hinge assembly 100 includes an upper recessed hinge assembly 100 and a lower recessed hinge assembly 100, the upper recessed hinge assembly 100 is disposed above the door 300 and the cabinet 200, and the lower recessed hinge assembly 100 is disposed below the door 300. The connection structure between the upper and lower hinge devices 100 and the door 300 and the box 200 are symmetrically arranged, and the other difference between the upper and lower hinge devices 100 and 100 is that the lower hinge device 100 simultaneously supports the gravity of the door 300 under a force, but the structure is the same as that of the upper hinge device 100. The above-mentioned embedded hinge device 100 is described in detail as an example, and reference may be made to the installation position of the hinge device 100 and the corresponding relationship between the hinge state and the rotation angle of the door 300 in fig. 1, 5 and 7.

The embedded hinge device 100 of the embodiment comprises a hinge seat 10, a rotating part 20, a linkage part and a limiting part 50, wherein the hinge seat 10 is fixedly connected with a box body 200, a rotating body 22 is fixedly connected with a door body 300, the rotating part 20 controls the opening path and the turning opening movement mode of the door body 300, and the box body 200 is not extruded and the side wall or the cabinet body 400 is not collided in the opening process of the door body 300.

The rotating portion 20 of the embedded hinge device 100 includes a first gear 21 and a rotating body 22 fixedly connected to the axis of the first gear 21, the rotating body 22 is fixedly connected to the axis of the first gear 21, which means that it is different from eccentric motion, the axis of rotation of the rotating body 22 and the axis of rotation of the first gear 21 coincide with each other, and the rotational angular speeds of the rotating body 22 and the first gear 21 are also the same.

The linkage portion includes transmission portion 40 and second gear 30, transmission portion 40 rotates simultaneously and connects in hinge seat 10 and second gear 30, second gear 30 meshes with first gear 21, transmission portion 40's effect lies in increasing a degree of freedom for second gear 30, make second gear 30 in the pivoted, can also move on the plane of perpendicular to second gear 30 axis of rotation, hinge seat 10 plays the fixed effect of support, first gear 21 and second gear 30 can be as shown in fig. 3, all be not a complete gear, through controlling its size and drive ratio, can make its turned angle can not reach 360, the coverage scope of the teeth of a cogwheel on the guarantee gear satisfies the meshing all the time in the turned range can.

The limiting portion 50 includes a first limiting member and a second limiting member, the first limiting member is rotatably connected to the axis of the first gear 21 and the axis of the second gear 30, and the second limiting member limits the linkage portion and/or the rotating portion 20 to reciprocate toward the predetermined track. The first limiting member ensures that the first gear 21 and the second gear 30 are always engaged, and plays a role in tensioning the first gear 21 while being engaged, so as to prevent the first gear 21 from being far away from the second gear 30. The second limiting member is mainly used for guiding the first gear 21 to move along a preset track, so as to achieve the purpose of drawing the second gear 30 to move according to an expected planned path.

In fig. 1, the door 300 is in a closed state, and at this time, the in-laid hinge device 100 is as shown in fig. 2 or 4, and when the door 300 is opened by a certain angle, for example, about 45 °, as shown in fig. 5, the in-laid hinge device 100 is as shown in fig. 6, and when the door 300 is opened by a larger angle, for example, about 90 °, as shown in fig. 7, the hinge device 100 is as shown in fig. 8.

Further, the hinge base 10 includes a supporting member, the limiting portion 50 includes a sleeve member slidably connected to the supporting member, and the rotating portion 20 is rotatably connected to the sleeve member at the axis of the first gear 21. For the lower embedded hinge device 100, the rotating body 22 of the lower embedded hinge device 100 is connected to the door 300, the gravity of the door 300 acts on the rotating portion 20, the rotating portion 20 is rotatably connected to the socket at the axis of the first gear 21, so that the socket bears the gravity of the door 300, the socket is slidably connected to the support, and the support bears the function of supporting the door 300.

In this embodiment, the first limiting member, the second limiting member and the sleeve member are integrally formed, and the three members together form a structure as shown in fig. 2 or 3, in the structure of the limiting portion 50 in the figure, the relative fixing of the first gear 21 and the second gear 30, the support of the door 300 and the movement of the guiding linkage portion and/or the rotating portion 20 along the predetermined track are simultaneously realized.

In one embodiment, one of the second limiting member and the support member includes a limiting slider and the other includes a limiting groove, the limiting groove is disposed along the predetermined track, and the limiting slider is inserted into the limiting groove.

In another embodiment, as shown in fig. 2, 4, 6, and 8, the supporting member includes a supporting body 11 and a first limiting groove 12 disposed on the supporting body 11, and the second limiting member includes a second limiting groove 521 and a plurality of limiting rods 522 disposed in the second limiting groove 521, since the second limiting member can be integrally formed with the first limiting member and the sleeve member, the following discussion will be described with reference to the drawings, in which the second limiting member is an integral limiting portion 50.

The first gear 21 has a first limit position and a second limit position, which correspond to the two limit positions corresponding to the maximum opening angle of the door 300 and the closing angle of the door 300, and a stopper may be installed between the door 300 and the cabinet 200 to limit the maximum rotation angle of the door 300. Between the first extreme position and the second extreme position, the first gearwheel 21 is always in engagement with the second gearwheel 30.

When the first gear 21 rotates between the first limit position and the second limit position, at least a part of the support body 11 is always located in the second limit groove 521, and at least a part of the limit rod 522 is always located in the first limit groove 12, a mutual nested positional relationship is formed between the support member and the limit part 50, the limit rod 522 of the limit part 50 is restrained inside the support member by the first limit groove 12, and the first limit groove 12 restrains the limit rod 522 to move only along the extending path of the groove; the supporting body 11 of the supporting member is limited inside by the second limiting groove 521 of the limiting portion 50, as shown in fig. 4, 6 and 8, the supporting body 11 is limited between two vertical parallel plate bodies of the limiting portion 50, and in turn, the limiting portion 50 is limited to move only along the extending direction of the supporting member, so that on one hand, the moving path is more reliable, the problem of separation is not easy to occur, and a better supporting effect is achieved on the limiting portion 50.

The limiting portion 50 includes a socket plate 51, a sliding groove 52 surrounded by the socket plate 51, and a plurality of holes 53 penetrating through the socket plate 51, the socket plate 51 is sleeved outside the support member through the sliding groove 52, a coaxial first rotating shaft 23 is disposed at an axis of the first gear 21, a coaxial second rotating shaft 31 is disposed at an axis of the second gear 30, and the first rotating shaft 23 and the second rotating shaft 31 respectively pass through different holes 53.

The second limiting groove 521 may be a part of the sliding groove 52, and a partition is further disposed in the sliding groove 52 to separate the second limiting groove 521, as shown in fig. 3, 4, 6, and 8.

The first rotating shaft 23 is coaxially disposed with the axis of the first gear 21, that is, the first rotating shaft 23 and the first gear 21 both rotate along the same axis, the second rotating shaft 31 is coaxially disposed with the axis of the second gear 30, that is, the second rotating shaft 31 and the second gear 30 both rotate along the same axis, the first rotating shaft 23 and the second rotating shaft 31 both rotate relative to the inside of the opening 53 with the socket plate 51 of the limiting portion 50, so that the axes of the first rotating shaft 23 and the second rotating shaft 31 are relatively fixed, and the first gear 21 and the second gear 30 are always engaged with each other.

Further, the transmission portion 40 includes a third rotating shaft 42, a fourth rotating shaft 43 and a connecting rod 41, as shown in fig. 3, the connecting rod 41 is rotatably connected to the hinge base 10 through the third rotating shaft 42, and the connecting rod 41 is rotatably connected to the second gear 30 through the fourth rotating shaft 43, the connecting rod 41 swings around the hinge base 10, and in the swinging process, the second gear 30 is pushed to move forward or backward, the first gear 21 and the door 300 are indirectly pushed to move forward or backward, and the technical effect of pushing the door 300 to rotate and move forward is achieved.

The cabinet 200 includes a side wall 201, and since the embodiment is applied to the embedded hinge device 100, an axis of rotation of the door 300 is an axis of rotation of the first gear 21, that is, an axis of the first gear 21, in order to implement embedded installation, and reduce an amount of the door 300 extending out of a plane where the side wall 201 is located when the door 300 rotates, the axis of the first gear 21 is within a vertical projection plane of the door 300, as shown in fig. 6, but if the door 300 directly rotates, a problem that a door seal of the door 300 is pressed against the cabinet 200 may occur, and in order to avoid interference between the door seal and the cabinet 200, the door 300 moves forward while rotating.

In this embodiment, the predetermined track extends linearly in a direction away from the hinge base 10, specifically, the linear extending direction is parallel to the front-back direction, correspondingly, the socket plate 51 moves along the front-back direction, the second rotating shaft 31 and the first rotating shaft 23 also move along the front-back direction, and the sliding groove 52 and the second limiting groove 521 are also parallel to the front-back direction, so that the door 300 moves linearly forward while rotating.

The first gear 21 has a first limit position and a second limit position, in the first limit position, the distance between the first gear 21 and the third rotating shaft 42 is shorter than the second limit position, in this embodiment, when the first gear 21 is at the first limit position, the door 300 is in a closed state, at which the first gear 21 is closer to the box 200, and when the first gear 21 is at the second limit position, the door 300 is in an open state, at which the first gear 21 is far from the box 200.

When the first gear 21 is located at the first limit position, the extending direction of the link 41 is perpendicular to the preset trajectory direction. Since the predetermined trajectory direction is a front-rear direction, the extending direction of the link 41 is perpendicular to the front-rear direction, that is, parallel to the left-right direction when the door body 300 is in the closed state. In this state, when the door 300 is opened, the link 41 is rotated in a forward direction, and at this time, a forward-backward movement component of the movement of the link 41 is greater than a forward-backward movement component of the movement of the link 41 at another position, particularly greater than a forward-backward movement component of the movement of the link 41 parallel to the forward-backward direction.

More directly, at this time, the connecting rod 41 is parallel to the left-right direction when the door body 300 is closed, so that when the door body 300 is opened, the fourth rotating shaft 43 moves forward faster, correspondingly, the forward movement speed of the door body 300 is faster in the initial stage of opening the door body 300, i.e., in the movement process from fig. 1 to fig. 5, when the door body 300 is in the movement process from fig. 5 to fig. 7, the forward movement speed is slower, and even when the door body 300 is opened by 90 °, the component speed of the movement of the door body 300 in the front-back direction is 0. When the door body 300 is opened, the door body 300 is away from the box body 200 as soon as possible and moves to a position closer to the front, so that the door seal is not extruded, and the door body 300 cannot interfere with the box body 200 in the rotating process.

Further, the radius of the reference circle of the first gear 21 is defined as a first radius, the radius of the reference circle of the second gear 30 is defined as a second radius, and the product of the distance from the fourth rotating shaft 43 to the axial center of the second gear 30 and the first radius is larger than the product of the distance from the third rotating shaft 42 to the fourth rotating shaft 43 and the second radius. Note that the distance from the third rotating shaft 42 to the fourth rotating shaft 43 is L1, the distance from the fourth rotating shaft 43 to the axis of the second gear 30 is L2, the first radius is R1, and the second radius is R2, that is, R1 × L2> R2 × L1.

When the requirement of R1 × L2> R2 × L1 is satisfied, the door 300 can move forward faster in the initial opening stage, and in the later opening stage of the door 300, the movement of the door 300 in the front-back direction is reduced, and more is the rotational movement of the door 300.

Specifically, in one embodiment, since the hinge itself is not large in size, R1 and L1 are similar in size, and the relationship between L2 and R2 is mainly considered, that is, L2> R2, at this time, the linear velocity of the second gear 30 at the fourth rotating shaft 43 is greater than the linear velocity of the teeth at the pitch circle of the second gear 30, since the second gear 30 and the link 41 are connected to the fourth rotating shaft 43 at the same time, the first gear 21 is meshed with the second gear 30, the linear velocity of the end of the link 41 is equal to the linear velocity of the second gear 30 at the fourth rotating shaft 43, the linear velocity of the teeth of the first gear 21 is equal to the linear velocity of the teeth of the second gear 30, that is, the linear velocity of the end of the link 41 is greater than the linear velocity of the end of the first gear 21, and since R1 and L1 are similar in size, the angular velocity of the link 41 is greater than the angular velocity of the first gear 21, that is, that the link 41 rotates at a faster speed than the door 300, and the initial state of the link 41 is parallel to the left-right direction, the door 300 can be pushed out more quickly.

In addition, in combination with the above-mentioned linear velocity of the end of the link 41 being equal to the linear velocity of the second gear 30 at the fourth rotation shaft 43, the product of the distance from the fourth rotation shaft 43 to the axial center of the second gear 30 and the angular velocity of the second gear 30 at the fourth rotation shaft 43 is the same as the product of the distance from the third rotation shaft 42 to the fourth rotation shaft 43 and the angular velocity of the link 41 at the fourth rotation shaft 43. And since the linear velocity at the teeth of the first gear 21 is equal to the linear velocity at the teeth of the second gear 30, the product of the second radius and the angular velocity of the second gear 30 at the pitch circle of the teeth is the same as the product of the first radius and the angular velocity of the first gear 21 at the pitch circle of the teeth. In addition, since the teeth at the reference circle of the fourth rotating shaft 43 and the second gear 30 are located on the second gear 30, the angular velocity of the second gear 30 at the fourth rotating shaft 43 is equal to the angular velocity of the teeth at the reference circle of the second gear 30, and when R1 × L2> R2 × L1 is combined with all the above relations, the angular velocity of the link 41 rotating at the third rotating shaft 42 can be controlled to be greater than the angular velocity of the first gear 21, so that the door 300 can be pushed forward more quickly when rotating.

Further, a preset gap 202 is arranged on one side, away from the box body 200, of the side wall 201, the door body 300 comprises a corner 301, away from the box body 200, the corner 301 is arranged on one side, close to the side wall 201, of the door body 300, and the distance from the axis of the first gear 21 to the corner 301 is smaller than the sum of the distance from the axis of the first gear 21 to the side wall 201 and the thickness of the preset gap 202, as shown in fig. 6, the preset gap 202 is a gap between the refrigeration equipment and the side cabinet body 400, and when the condition is met, the door body 300 can be controlled not to collide with the side cabinet body 400 all the time in the opening process. The embedded refrigerator has different gap sizes between the refrigerator and the side cabinet 400 or the wall body under the requirements of different embedding grades, when the embedding grade is higher, the value of the preset gap 202 is smaller, for example, the maximum of the preset gap 202 of some required side surfaces is 30mm, when the embedding grade is higher, the value can be 20mm, and when the embedding grade is higher, the amount of the door body 300 which can extend outwards is smaller.

Compared with the prior art, the embodiment has the following beneficial effects:

this embedded hinge device 100 linkage portion and spacing 50's cooperation, it rotates when realizing that rotation portion 20 moves along predetermineeing the orbit, refrigeration plant door body 300 that has realized embedded structure does not collide with the cabinet body 400 of box 200 and side when opening, this embedded hinge device 100 can be more flat for current hinge, the size is littleer, the space that occupies is little, the occupation of the space of reserving for the installation hinge has been reduced when the appearance is pleasing to the eye, refrigeration plant's volume rate of utilization has been improved.

It should be understood that although the specification describes embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and it will be appreciated by those skilled in the art that the specification as a whole may be appropriately combined to form other embodiments as will be apparent to those skilled in the art.

The above-listed detailed description is only a specific description of a possible embodiment of the present invention, and they are not intended to limit the scope of the present invention, and equivalent embodiments or modifications made without departing from the technical spirit of the present invention should be included in the scope of the present invention.

Claims (12)

1. An embedded hinge device, comprising:

a hinge mount;

the rotating part comprises a first gear and a rotating body fixedly connected to the axle center of the first gear;

the linkage part comprises a transmission part and a second gear, the transmission part is simultaneously and rotatably connected with the hinge seat and the second gear, and the second gear is meshed with the first gear;

the limiting part comprises a first limiting part and a second limiting part, the first limiting part is simultaneously rotatably connected to the axle center of the first gear and the axle center of the second gear, and the second limiting part limits the linkage part and/or the rotating part to reciprocate along a preset track.

2. The embedded hinge device as claimed in claim 1, wherein the hinge seat comprises a supporting member, the limiting portion comprises a sleeve member slidably connected to the supporting member, and the rotating portion is rotatably connected to the sleeve member at the axis of the first gear.

3. The embedded hinge device as claimed in claim 2, wherein one of the second limiting member or the supporting member comprises a limiting slider, and the other of the second limiting member or the supporting member comprises a limiting groove, the limiting groove is disposed along a predetermined track, and the limiting slider is inserted into the limiting groove.

4. The embedded hinge device as claimed in claim 3, wherein the supporting member comprises a supporting body and a first limiting groove disposed on the supporting body, the second limiting member comprises a second limiting groove and a plurality of limiting rods disposed in the second limiting groove, the first gear has a first limit position and a second limit position, when the first gear rotates between the first limit position and the second limit position, the supporting body is always at least partially disposed in the second limiting groove, and at least a portion of the limiting rods is always disposed in the first limiting groove.

5. The embedded hinge device as claimed in claim 2, wherein the first limiting member, the second limiting member and the socket member are integrally formed.

6. The embedded hinge device as claimed in claim 5, wherein the position-limiting portion comprises a socket plate, a sliding groove surrounded by the socket plate, and a plurality of openings penetrating through the socket plate, the socket plate is sleeved outside the supporting member through the sliding groove, a first coaxial rotating shaft is disposed at an axis of the first gear, a second coaxial rotating shaft is disposed at an axis of the second gear, and the first rotating shaft and the second rotating shaft respectively pass through different openings.

7. The embedded hinge device as claimed in claim 1, wherein the transmission part comprises a third rotating shaft, a fourth rotating shaft and a connecting rod, the connecting rod is rotatably connected with the hinge base through the third rotating shaft, and the connecting rod is rotatably connected with the second gear through the fourth rotating shaft.

8. The embedded hinge device as claimed in claim 7, wherein the predetermined trace extends linearly away from the hinge base.

9. The hinge assembly as claimed in claim 8, wherein the first gear has a first limit position and a second limit position, the first gear is located at a shorter distance from the third shaft than the second limit position, and the extending direction of the connecting rod is perpendicular to the predetermined track direction when the first gear is located at the first limit position.

10. The hinge assembly as claimed in claim 9, wherein the radius of the reference circle of the first gear is defined as a first radius, the radius of the reference circle of the second gear is defined as a second radius, and the product of the distance from the fourth shaft to the center of the second gear and the first radius is greater than the product of the distance from the third shaft to the fourth shaft and the second radius.

11. Refrigeration appliance, characterized in that it comprises an embedded hinge device according to any one of claims 1 to 10.

12. The refrigeration equipment according to claim 11, comprising a box body and a door body for opening and closing the box body, wherein the hinge seat is fixedly connected with the box body, the rotating body is fixedly connected with the door body, the box body comprises a side wall, a preset gap is arranged on one side of the side wall far away from the box body, the door body comprises a corner far away from the box body, the corner is arranged on one side of the door body close to the side wall, and the distance from the axis of the first gear to the corner is smaller than the sum of the distance from the axis of the first gear to the side wall and the thickness of the preset gap.

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