Embedded hinge device and refrigeration equipment

Abstract

This invention discloses an embedded hinge device and a refrigeration device. The hinge device includes a hinge base, a rotating part, a linkage part, and a limiting part. The rotating part includes a first gear and a rotating body fixedly connected to the shaft of the first gear. The linkage part includes a transmission part and a second gear, which are rotatably connected to both the hinge base and the second gear, and the second gear meshes with the first gear. The limiting part includes a first limiting member and a second limiting member, which are rotatably connected to the shafts of both the first and second gears, and the second limiting member restricts the reciprocating motion of the linkage part and / or the rotating part to a preset trajectory. This embedded hinge device prevents the door of the embedded refrigeration device from colliding with the cabinet body and side panels when opened, and it is also smaller in size, reducing the space occupied for hinge installation and improving the volume utilization rate of the refrigeration device.

Description

TECHNICAL FIELD

[0001] The present application relates to an embedded hinge device, in particular to a refrigeration equipment with the embedded hinge device. BACKGROUND

[0002] The embedded hinge device is generally complex in structure, large in space occupation, increases the thickness of the beam, and is inconvenient to install, poor in use experience, poor in appearance, and low in volume utilization rate, many problems restrict the application of the embedded hinge, and also make the refrigeration equipment with the embedded hinge generally high in price, which affects the sales of the refrigeration equipment.

[0003] Therefore, it is necessary to improve the existing embedded hinge device to solve the above problems. SUMMARY

[0004] In order to solve the problems in the prior art, the purpose of the present application is to provide an embedded hinge device and a refrigeration equipment with the embedded hinge device.

[0005] In order to achieve the above-mentioned purpose of the application, an embodiment of the present application provides an embedded hinge device, which comprises:

[0006] a hinge seat;

[0007] a rotating part comprising a first gear and a rotating body fixedly connected to the axis of the first gear;

[0008] a linkage part comprising a transmission part and a second gear, the transmission part being rotatably connected to the hinge seat and the second gear, and the second gear being engaged with the first gear;

[0009] a limiting part comprising a first limiting piece and a second limiting piece, the first limiting piece being rotatably connected to the axis of the first gear and the axis of the second gear, and the second limiting piece limiting the reciprocating movement of the linkage part and / or the rotating part along a preset track.

[0010] As a further improvement of the present application, the hinge seat comprises a supporting piece, the limiting part comprises a sleeve connecting piece slidably connected to the supporting piece, and the rotating part is rotatably connected to the sleeve connecting piece at the axis of the first gear.

[0011] As a further improvement of the present application, one of the second limiting piece or the supporting piece comprises a limiting sliding block, and the other comprises a limiting groove, the limiting groove is arranged along a preset track, and the limiting sliding block is inserted into the limiting groove.

[0012] As a further improvement of the application, the support member comprises a support body and a first limiting groove arranged on the support body, the second limiting member comprises a second limiting groove and a plurality of limiting rods arranged 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 support body is always at least partially located in the second limiting groove, and at least part of the limiting rods are always located in the first limiting groove.

[0013] As a further improvement of the application, the first limiting member, the second limiting member and the sleeve member are integrally formed.

[0014] As a further improvement of the application, the limiting part comprises a sleeve plate, a sliding groove surrounded by the sleeve plate, and a plurality of openings penetrating through the sleeve plate, the sleeve plate is sleeved on the outside of the support member through the sliding groove, a first rotating shaft coaxial with the axis of the first gear is arranged at the axis of the first gear, a second rotating shaft coaxial with the axis of the second gear is arranged at the axis of the second gear, and the first rotating shaft and the second rotating shaft respectively penetrate through different openings.

[0015] As a further improvement of the application, the transmission part comprises a third rotating shaft, a fourth rotating shaft and a connecting rod, the connecting rod is rotationally connected to the hinge seat through the third rotating shaft, and the connecting rod is rotationally connected to the second gear through the fourth rotating shaft.

[0016] As a further improvement of the application, the preset track extends linearly in a direction away from the hinge seat.

[0017] As a further improvement of the application, the first gear has a first limit position and a second limit position, at the first limit position, the distance between the first gear and the third rotating shaft is shorter than at the second limit position, when the first gear is located at the first limit position, the extension direction of the connecting rod is perpendicular to the direction of the preset track.

[0018] As a further improvement of the application, the radius of the pitch circle of the first gear is denoted as a first radius, the radius of the pitch circle of the second gear is denoted as a second radius, 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.

[0019] To achieve one of the above-mentioned purposes, an embodiment of the application provides a refrigeration equipment comprising the embedded hinge device.

[0020] As a further improvement of the present application, it comprises a box body and a door body used to open and close the box body, 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 a side of the box body away from the side wall, the door body comprises a corner away from the box body, and the corner is arranged on a side of the door body close to the side wall, and the distance from the shaft center of the first gear to the corner is less than the sum of the distance from the shaft center of the first gear to the side wall and the thickness of the preset gap.

[0021] Compared with the prior art, the present application has the following beneficial effects: the cooperation of the linkage part and the limiting part of the embedded hinge device realizes the rotation of the rotating part along the preset track, realizes that the door body of the embedded structure refrigeration equipment does not collide with the box body and the side cabinet when being opened, the embedded hinge device can be more flat and smaller in size compared with the existing hinge, occupies less space, is beautiful in appearance, reduces the occupation of the space reserved for the installation of the hinge, and improves the volume utilization rate of the refrigeration equipment. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a structural schematic view of the refrigeration equipment door body when being closed according to an embodiment of the present application;

[0023] Figure 2 is a structural schematic view of the hinge device when the refrigeration equipment door body is closed according to an embodiment of the present application;

[0024] Figure 3 is an exploded view of the hinge device according to an embodiment of the present application;

[0025] Figure 4 is a sectional view of the hinge device when the refrigeration equipment door body is closed according to an embodiment of the present application;

[0026] Figure 5 is a top view when the refrigeration equipment door body is partially opened according to an embodiment of the present application;

[0027] Figure 6 is Figure 5 is a local enlarged view of A in FIG. 6;

[0028] Figure 7 is a structural schematic view of the refrigeration equipment door body when being completely opened according to an embodiment of the present application;

[0029] Figure 8 is a sectional view of the hinge device when the refrigeration equipment door body is completely opened according to an embodiment of the present application;

[0030] Wherein, 100, hinge device; 200, box body; 201, side wall; 202, preset gap; 300, door body; 301, corner; 400, cabinet body; 10, hinge seat; 11, support body; 12, first limiting groove; 20, rotating part; 21, first gear; 22, rotating body; 23, first rotating shaft; 30, second gear; 31, second rotating shaft; 40, transmission part; 41, connecting rod; 42, third rotating shaft; 43, fourth rotating shaft; 50, limiting part; 51, sleeving plate; 52, sliding groove; 521, second limiting groove; 522, limiting rod; 53, opening. DETAILED DESCRIPTION

[0031] The application will be described in detail below with reference to specific embodiments shown in the drawings. However, these embodiments do not limit the application, and the changes made by those skilled in the art in structure, method, or function based on these embodiments are included in the protection scope of the application.

[0032] It should be understood that the terms such as "upper", "above", "lower", "below" and the like used herein to indicate spatial relative positions are for the purpose of facilitating description to describe the relationship of one unit or feature relative to another unit or feature as shown in the drawings. The spatial relative position terms can be intended to include different orientations of the device in use or in operation other than the orientation shown in the drawings.

[0033] An embodiment of the application provides an embedded hinge device and a refrigeration device with the embedded hinge device, which is used to realize embedded installation of the device, especially for embedded installation of the refrigeration device, and achieves the technical effects of convenient installation and beautiful appearance.

[0034] The refrigeration device of the embodiment can be set as various refrigeration devices such as a refrigerator, a wine cabinet, a freezer, a refrigerator cabinet, etc., and is especially suitable for a refrigerator, and more particularly for an embedded refrigerator. The side surface of the refrigerator can be closely attached to a wall or a cabinet body 400. The refrigerator includes a box body 200, a door body 300, and the embedded hinge device 100 of the embodiment. The door body 300 of the embedded refrigerator can be flush with the outer surface of the side cabinet body 400, forming an aesthetically pleasing whole. The door body 300 is rotationally connected to the box body 200 through the embedded hinge device 100, and is used to open and close the box body 200.

[0035] In addition, the embedded hinge device 100 can also be used for other devices, as long as the device is provided with a body and a door body 300 that can be opened or closed relative to the body. The embedded hinge device 100 is used to connect the body and the door body 300 of the device, and to realize that the door body 300 can be opened at a certain angle or closed relative to the body, while making it possible for the device to be installed in an embedded form, such as an embedded microwave oven, an embedded dishwasher, an embedded oven, etc.

[0036] For the sake of clearly expressing the position and direction described in the embodiment, in the embodiment, the direction in which the door body 300 is opened is defined as front, the opposite direction is defined as back, the direction according to gravity is defined as down, the opposite direction is defined as up, the user stands in front of the refrigerator, and the two sides of the refrigerator are respectively defined as left and right, Figure 1 、 Figure 5 、 Figure 7 In the embodiment, the process in which the door body 300 on the right side of the refrigerator is opened is taken as an example for explanation and description.

[0037] The embedded hinge device 100 includes an upper embedded hinge device 100 and a lower embedded hinge device 100. The upper embedded hinge device 100 is arranged above the door body 300 and the cabinet 200, and the lower embedded hinge device 100 is arranged below the door body 300. The connection structures of the upper embedded hinge device 100 and the lower embedded hinge device 100 with the door body 300 and the cabinet 200 are symmetrically arranged. The only difference between the upper embedded hinge device 100 and the lower embedded hinge device 100 is that, in terms of force, the lower embedded hinge device 100 simultaneously plays a role of supporting the gravity of the door body 300, but the structure of the lower embedded hinge device 100 is the same as that of the upper embedded hinge device 100. In the following, the upper embedded hinge device 100 is taken as an example for detailed description. For reference, the mounting position of the hinge device 100 and the corresponding relationship between the hinge state and the rotation angle of the door body 300 can be found in Figure 1 、 Figure 5 、 Figure 7 .

[0038] The embedded hinge device 100 of the embodiment includes a hinge seat 10, a rotating part 20, a linkage part, and a limiting part 50. The hinge seat 10 is fixedly connected to the cabinet 200, the rotating body 22 is fixedly connected to the door body 300, the rotating part 20 controls the opening path and the motion mode of the door body 300 in the process of opening, and guarantees that the door body 300 will not squeeze the cabinet 200 and will not collide with the wall or the cabinet 400 on the side in the process of opening.

[0039] The rotating part 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 coincides with the axis of rotation of the first gear 21, and the rotation angular velocity of the rotating body 22 is consistent with that of the first gear 21.

[0040] The linkage part comprises a transmission part 40 and a second gear 30, the transmission part 40 is rotatably connected to the hinge seat 10 and the second gear 30 at the same time, the second gear 30 is engaged with the first gear 21, the transmission part 40 serves to add a degree of freedom to the second gear 30, so that the second gear 30 can move in a plane perpendicular to the rotation axis of the second gear 30 while rotating, the hinge seat 10 serves to support and fix, the first gear 21 and the second gear 30 can be as shown in Figure 3 , neither of which is a complete gear, by controlling the size and transmission ratio, the rotation angle can not reach 360°, so as to ensure that the coverage range of the gear teeth meets the engagement in the rotation range.

[0041] The limiting part 50 comprises a first limiting member and a second limiting member, the first limiting member is rotatably connected to the shaft center of the first gear 21 and the shaft center of the second gear 30 at the same time, and the second limiting member limits the reciprocating movement of the linkage part and / or the rotating part 20 to the preset track. The first limiting member on the one hand ensures the engagement of the first gear 21 and the second gear 30 at all times, and on the other hand tightens the first gear 21 while engaging, preventing the first gear 21 from moving away from the second gear 30. The second limiting member is mainly used to guide the movement of the first gear 21 along the preset track, so as to realize the purpose of moving the second gear 30 along the expected planning path.

[0042] In Figure 1 , the door body 300 is in a closed state, at this time, the embedded hinge device 100 is as shown in Figure 2 or 4, when the door body 300 is opened to a certain angle, such as about 45°, as shown in Figure 5 , at this time, the embedded hinge device 100 is as shown in Figure 6 , when the door body 300 is opened to a larger angle, such as about 90°, as shown in Figure 7 , at this time, the hinge device 100 is as shown in Figure 8 .

[0043] Further, the hinge seat 10 comprises a supporting member, the limiting part 50 comprises a sleeve member slidingly connected to the supporting member, and the rotating part 20 is rotatably connected to the sleeve member at the shaft center of the first gear 21. For the lower embedded hinge device 100, it needs to bear the gravity and torque of the door body 300, the rotating body 22 of the lower embedded hinge device 100 is connected to the door body 300, the gravity of the door body 300 acts on the rotating part 20, by rotatably connecting the rotating part 20 to the sleeve member at the shaft center of the first gear 21, the sleeve member bears the gravity of the door body 300, the sleeve member is slidingly connected to the supporting member, so that the supporting member bears the role of supporting the door body 300.

[0044] In this embodiment, the first limiting member, the second limiting member and the sleeve member are integrally formed, and the three together form as shown in Figure 2Or 3, in the structure of the limiting part 50, the relative fixation of the first gear 21 and the second gear 30, the support of the door body 300, and the guiding of the linkage and / or rotating part 20 along the preset trajectory are simultaneously achieved.

[0045] The second limiting part and the support part are in sliding connection, in an embodiment thereof, the second limiting part or the support part comprises a limiting sliding block and a limiting slot respectively, the limiting slot is arranged along a preset trajectory, and the limiting sliding block is inserted into the limiting slot.

[0046] In another embodiment, as shown in Figs. Figure 2 、 4 , 6, 8, the support part comprises a support body 11 and a first limiting slot 12 arranged on the support body 11, and the second limiting part comprises a second limiting slot 521 and a plurality of limiting rods 522 arranged in the second limiting slot 521. Since the second limiting part can be integrally formed with the first limiting part and the sleeve part as described above, the following description is made in combination with the drawings, taking the limiting part 50 as a whole.

[0047] The first gear 21 has a first limit position and a second limit position, which correspond to two limit positions of the door body 300 closing and the door body 300 opening to the maximum angle respectively. A stop device can be installed between the door body 300 and the box body 200 to limit the maximum angle of the door body 300 rotating. Between the first limit position and the second limit position, the first gear 21 is always engaged with the second gear 30.

[0048] When the first gear 21 rotates between the first limit position and the second limit position, the support body 11 is always at least partially located in the second limiting slot 521, and at least part of the limiting rod 522 is always located in the first limiting slot 12. The support part and the limiting part 50 form a mutual nesting relationship, the limiting rod 522 of the limiting part 50 is constrained inside the first limiting slot 12 of the support part, and the first limiting slot 12 restricts the limiting rod 522 to move along the extension path of the slot; the support body 11 of the support part is limited inside the second limiting slot 521 of the limiting part 50, as shown in Figs. Figure 4 、 6 , 6, 8, the support body 11 is constrained between the two vertically parallel plate bodies of the limiting part 50, which in turn limits the limiting part 50 to move along the extension direction of the support part, thereby on the one hand the movement path is more reliable and is not easy to produce the problem of disengagement, and on the other hand the limiting part 50 is better supported.

[0049] The limiting part 50 comprises a sleeve plate 51, a sliding groove 52 surrounded by the sleeve plate 51, and a plurality of openings 53 penetrating through the sleeve plate 51, the sleeve plate 51 is sleeved on the outside of the supporting part through the sliding groove 52, a first rotating shaft 23 coaxial with the axis of the first gear 21 is arranged at the axis of the first gear 21, a second rotating shaft 31 coaxial with the axis of the second gear 30 is arranged at the axis of the second gear 30, and the first rotating shaft 23 and the second rotating shaft 31 respectively penetrate through different openings 53.

[0050] The second limiting groove 521 can be a part of the sliding groove 52, and a partition is further arranged in the sliding groove 52 to separate the second limiting groove 521, as shown in Figs. Figure 3 、 4 , 6, 8.

[0051] The first rotating shaft 23 is coaxially arranged with the axis of the first gear 21, that is, the first rotating shaft 23 and the first gear 21 rotate along the same axis, the second rotating shaft 31 is coaxially arranged with the axis of the second gear 30, that is, the second rotating shaft 31 and the second gear 30 rotate along the same axis, and the first rotating shaft 23 and the second rotating shaft 31 are both arranged relative to the openings 53 of the sleeve plate 51 of the limiting part 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.

[0052] Further, the transmission part 40 comprises a third rotating shaft 42, a fourth rotating shaft 43, and a connecting rod 41, as shown in Fig. Figure 3 The connecting rod 41 is rotationally connected with the hinge base 10 through the third rotating shaft 42, and the connecting rod 41 is rotationally connected with the second gear 30 through the fourth rotating shaft 43, the connecting rod 41 swings around the hinge base 10, and in the process of swinging, the second gear 30 is pushed to move forward or backward, and the first gear 21 and the door body 300 are indirectly pushed to move forward or backward, thereby achieving the technical effect that the door body 300 is pushed to rotate and move forward at the same time.

[0053] The box body 200 comprises a side wall 201, since the present embodiment is applied to the embedded hinge device 100, the axis of rotation of the door body 300 is the axis of rotation of the first gear 21, that is, the axis of the first gear 21, in order to realize embedded installation and reduce the amount of the door body 300 extending out of the plane of the side wall 201 when the door body 300 rotates, the axis of the first gear 21 is in the vertical projection plane of the door body 300, as shown in Fig. Figure 6 However, if the door body 300 directly rotates, the door seal of the door body 300 will be pressed against the box body 200, in order to avoid the interference between the door seal and the box body 200, the door body 300 moves forward at the same time of rotating.

[0054] In this embodiment, the preset track extends linearly in a direction away from the hinge base 10, specifically, the linear extension direction is parallel to the front-rear direction, correspondingly, the sleeve plate 51 also moves along the front-rear direction, the second rotating shaft 31 and the first rotating shaft 23 also move along the front-rear direction, and the sliding groove 52 and the second limiting groove 521 are also parallel to the front-rear direction, so that the door body 300 moves linearly forward while rotating.

[0055] The first gear 21 has a first limit position and a second limit position, at the first limit position, the first gear 21 is closer to the third rotating shaft 42 than at the second limit position, in this embodiment, when the first gear 21 is at the first limit position, the door body 300 is in a closed state, at this time, the first gear 21 is closer to the cabinet 200, when the first gear 21 is at the second limit position, the door body 300 is in an open state, at this time, the first gear 21 is away from the cabinet 200.

[0056] When the first gear 21 is at the first limit position, the extension direction of the connecting rod 41 is perpendicular to the direction of the preset track. Since the direction of the preset track is the front-rear direction, when the door body 300 is in the closed state, the extension direction of the connecting rod 41 is perpendicular to the front-rear direction, that is, parallel to the left-right direction. In this state, when the door body 300 is opened, the rotating direction of the connecting rod 41 is forward movement, at this time, the front-rear direction movement component of the connecting rod 41 is greater than the front-rear direction movement component of the connecting rod 41 at other positions, especially greater than the front-rear direction movement component of the connecting rod 41 when it is parallel to the front-rear direction.

[0057] More directly, at this time, the connecting rod 41 is parallel to the left-right direction when closing the door, which can make the fourth rotating shaft 43 move forward faster when the door body 300 is opened, correspondingly, in the initial stage of opening the door body 300, that is, from Figures 1 to 5 to the movement process, the door body 300 moves forward faster, when the door body 300 is in the movement process from Figures 5 to 7 to the movement process, the speed of forward movement slows down, and even when the door body 300 is opened by 90°, the front-rear direction movement component of the door body 300 is 0. So that the door body 300 can move away from the cabinet 200 as soon as possible when opening, and move to a position closer to the front, so as to protect the door seal from being squeezed, and the door body 300 will not interfere with the cabinet 200 during rotation.

[0058] Further, the radius of the circle of division of the first gear 21 is recorded as a first radius, the radius of the circle of division of the second gear 30 is recorded as a second radius, the product of the distance from the fourth rotating shaft 43 to the axis of the second gear 30 and the first radius is greater than the product of the distance from the third rotating shaft 42 to the fourth rotating shaft 43 and the second radius. The distance from the third rotating shaft 42 to the fourth rotating shaft 43 is recorded as L1, the distance from the fourth rotating shaft 43 to the axis of the second gear 30 is recorded as L2, the first radius is recorded as R1, and the second radius is recorded as R2, that is, R1*L2>R2*L1.

[0059] When R1*L2>R2*L1 is satisfied, the door body 300 can be made to move forward more quickly at the initial stage of opening, and the movement of the door body 300 in the front-rear direction is reduced at the later stage of opening of the door body 300, and more rotational movement of the door body 300 is generated.

[0060] Specifically, in an embodiment thereof, since the size of the hinge itself is not large, the sizes of R1 and L1 are similar, at this time, the parts of L2 and R2 are mainly considered, which are embodied in the above relationship, 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 gear teeth of the circle of division of the second gear 30, since the fourth rotating shaft 43 is connected with the second gear 30 and the connecting rod 41 at the same time, and the first gear 21 is engaged with the second gear 30, the linear velocity of the end of the connecting rod 41 is equal to the linear velocity of the second gear 30 at the fourth rotating shaft 43, and the linear velocity of the gear teeth of the first gear 21 is equal to the linear velocity of the gear teeth of the second gear 30, that is, the linear velocity of the end of the connecting rod 41 is greater than the linear velocity of the end of the first gear 21, since the sizes of R1 and L1 are similar, the angular velocity of the connecting rod 41 is greater than the angular velocity of the first gear 21, that is, the rotating speed of the connecting rod 41 is faster than the rotating speed of the door body 300, and since the initial state of the connecting rod 41 is parallel to the left-right direction, the door body 300 can be pushed out more quickly.

[0061] In addition, the linear velocity of the end of the connecting rod 41 is equal to the linear velocity of the second gear 30 at the fourth rotating shaft 43, so the product of the distance from the fourth rotating shaft 43 to the axis of the second gear 30 and the angular velocity of the second gear 30 at the fourth rotating shaft 43 is the same as the product of the distance from the third rotating shaft 42 to the fourth rotating shaft 43 and the angular velocity of the connecting rod 41 at the fourth rotating shaft 43. Since the linear velocity at the gear tooth of the first gear 21 is equal to the linear velocity at the gear tooth 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 gear tooth 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 gear tooth. In addition, since the gear tooth at the pitch circle of the fourth rotating shaft 43 and the second gear 30 is 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 gear tooth at the pitch circle of the second gear 30. In combination with the above-mentioned relationships, when R1*L2>R2*L1, the angular velocity of the connecting rod 41 rotating at the third rotating shaft 42 can be controlled to be greater than the angular velocity of the first gear 21 rotating, so that the door body 300 is pushed out more quickly when rotating.

[0062] Further, a preset gap 202 is arranged on the side of the side wall 201 away from the cabinet 200, the door body 300 comprises a corner 301 away from the cabinet 200, and the corner 301 is arranged on the side of the door body 300 close to the side wall 201. The distance from the axis of the first gear 21 to the corner 301 is less 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 the gap between the refrigeration equipment and the side cabinet 400. When the condition is met, the door body 300 can be controlled to not collide with the side cabinet 400 during the opening process. For the embedded refrigerator, the gap between the refrigerator and the side cabinet 400 or the wall is different under different embedding levels. When the embedding level is higher, the value of the preset gap 202 is smaller. For example, the maximum preset gap 202 on the side is 30 mm. When the embedding level is higher, the preset gap 202 can be 20 mm. The higher the embedding level is, the smaller the amount of the door body 300 extending outwards is. Figure 6

[0063] Compared with the prior art, the embodiment has the following beneficial effects:

[0064] The cooperation of the linkage part and the limiting part 50 of the embedded hinge device 100 realizes the rotation of the rotating part 20 along the preset trajectory, realizes that the door body 300 of the embedded structure refrigeration equipment does not collide with the cabinet 200 and the side cabinet 400 when being opened, and the embedded hinge device 100 can be more flat and smaller in size compared with the prior art, occupies less space, is more beautiful in appearance, reduces the occupation of the space reserved for installing the hinge, and improves the volume utilization rate of the refrigeration equipment. ​

[0065] It should be understood that although the present specification is described in terms of embodiments, not every embodiment exhibits every characteristic or exhibits the described implementation to the full extent. The description herein of any particular embodiment is merely intended to describe the particular embodiment and is not intended to limit the scope of the application. The various embodiments set forth herein are described only for illustrative purposes, and elements of one embodiment can be used in other embodiments to produce other embodiments. Any combination of the described elements in all possible variations thereof is encompassed by the application unless otherwise indicated herein or otherwise clear from the context.

[0066] The above detailed description merely describes preferred embodiments of the application, and is not intended to limit the scope of the application. Such equivalent alterations and modifications that do not depart from the spirit of the application are intended to be within the scope of the application.

Claims

1. An embedded hinge device, characterized by, It comprises: a hinge seat comprising a support; a rotating part comprising a first gear and a rotating body fixedly connected to the axis of the first gear; a linkage part comprising a transmission part and a second gear, the transmission part being rotatably connected to the hinge seat and the second gear at the same time, the second gear being engaged with the first gear, the transmission part comprising a third rotating shaft, a fourth rotating shaft and a connecting rod, the connecting rod being rotatably connected to the hinge seat through the third rotating shaft and rotatably connected to the second gear through the fourth rotating shaft; a limiting part comprising a first limiting member, a second limiting member and a sleeve member, the first limiting member, the second limiting member and the sleeve member being integrally arranged, the sleeve member being slidably connected to the support, the rotating part being rotatably connected to the sleeve member at the axis of the first gear, the first limiting member being rotatably connected to the axis of the first gear and the axis of the second gear at the same time so that the first gear and the second gear are always engaged, the second limiting member limiting the first gear to reciprocate along a preset track extending linearly away from the hinge seat.

2. The flush mount hinge device of claim 1, wherein, The second limiting member or the support comprises a limiting sliding block and a limiting groove respectively, the limiting groove being arranged along the preset track, the limiting sliding block being inserted into the limiting groove.

3. The flush mount hinge device of claim 2, wherein, The support comprises a support body and a first limiting groove arranged on the support body, the second limiting member comprises a second limiting groove and a plurality of limiting rods arranged in the second limiting groove, the first gear having 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 support body is always at least partially located in the second limiting groove, and at least part of the limiting rods are always located in the first limiting groove.

4. The flush mount hinge apparatus of claim 1, wherein, The first limiting member, the second limiting member and the sleeve member are integrally arranged.

5. The flush mount hinge apparatus of claim 4, wherein, The limiting part comprises a sleeve plate, a sliding groove surrounded by the sleeve plate and a plurality of openings penetrating through the sleeve plate, the sleeve plate being sleeved on the outside of the support through the sliding groove, a first rotating shaft coaxial with the axis of the first gear being arranged at the axis of the first gear, a second rotating shaft coaxial with the axis of the second gear being arranged at the axis of the second gear, the first rotating shaft and the second rotating shaft penetrating through different openings respectively.

6. The flush-mounting fitting according to claim 1, characterized in that The first gear has a first limit position and a second limit position, at the first limit position, the distance between the first gear and the third rotating shaft is shorter than that at the second limit position, when the first gear is located at the first limit position, the extension direction of the connecting rod is perpendicular to the direction of the preset track.

7. The flush-fitting hinge device of claim 6, wherein, The radius of the pitch circle of the first gear is denoted as a first radius, the radius of the pitch circle of the second gear is denoted as a second radius, 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.

8. A refrigeration appliance characterized in that, It comprises the embedded hinge device of any one of claims 1-7.

9. The refrigeration appliance of claim 8, wherein, It includes a box body and a door body used to open and close the box body, the hinge seat is fixedly connected with the box body, the rotating body is fixedly connected with the door body, the box body includes a side wall, the side wall is provided with a preset gap away from one side of the box body, the door body includes a corner away from the box body, and the corner is arranged on a side of the door body close to the side wall, and the distance from the shaft center of the first gear to the corner is less than the sum of the distance from the shaft center of the first gear to the side wall and the thickness of the preset gap.

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