CN219197037U - Door hinge for refrigeration equipment and refrigeration equipment - Google Patents

Abstract

The utility model provides a door hinge for refrigeration equipment and the refrigeration equipment. The door hinge comprises a base and a hinge shaft assembly arranged on the base, wherein the base is provided with a mounting hole for the hinge shaft assembly to pass through, and the hinge shaft assembly comprises: the device comprises an inner shaft vertically extending, an outer shaft sleeved on the inner shaft, a base fixed at the bottom end of the inner shaft and a rotary table fixed at the bottom end of the base; the axle center of the inner shaft and the axle center of the outer shaft are arranged eccentrically. Compared with the prior art, the utility model realizes the transverse position adjustment of the door body by the eccentric arrangement between the outer shaft and the inner shaft and the relative rotation between the outer shaft and the inner shaft, and the transverse position adjustment range is larger, the adjustment precision is better, and the utility model is especially suitable for refrigerators with multiple door bodies.

Description

Door body hinge for refrigeration equipment and refrigeration equipment

technical field

The utility model relates to the field of refrigeration equipment, in particular to a door hinge for refrigeration equipment and the refrigeration equipment provided with it.

Background technique

Existing refrigerator doors are all opened and closed by hinges, that is, the hinges are fixed to the cabinet by screws, and the refrigerator door rotates with the hinge axis as the center of a circle, thereby realizing the switch and closure of the door and the cabinet. Therefore, the hinge The installation quality will greatly affect the smoothness and aesthetics of the door opening and closing. For example, when the hinge is fixed to the box, there are deviations in the screw holes, uneven fixing surfaces, and even deviations in the hinge shaft, which will cause The position of the hinge and the cabinet deviates from the design position, resulting in the deflection of the door body, which is commonly referred to as the phenomenon of "uneven door". In addition to affecting the appearance, the uneven door will also affect the smoothness of opening and closing to a certain extent, thus cause quality problems. To solve the problem of uneven doors, the existing hinge can only be adjusted in the vertical direction (set as the Z-axis direction) to change the height of the hinge, so that the hinge axis moves up and down, so as to realize the change of the height of the door body in the Z-axis direction . But this kind of hinge can only solve the deflection in the height direction, and it is powerless for the deflection in the left and right (X axis direction) and front and rear (Y axis direction) directions of the door body, and the door body cannot be adjusted in the horizontal direction (X axis and Y axis direction). axis) to achieve position adjustment.

Utility model content

The technical problem solved by the utility model is to provide a door hinge for refrigeration equipment and a refrigeration equipment equipped with it, so as to improve the problem that the position of the door body cannot be adjusted in multiple directions in the prior art.

In order to solve the above technical problems, the utility model adopts the following technical solution: a door hinge for refrigeration equipment, including a base and a hinge shaft assembly installed on the base, and a hinge shaft assembly is provided on the base Through the installation hole, the hinge shaft assembly includes: a vertically extending inner shaft, an outer shaft set on the inner shaft, a base fixed on the bottom end of the inner shaft, and a base fixed on the bottom end of the base Turntable; the axis center of the inner shaft and the axis center of the outer shaft are set eccentrically.

Further, the axis center of the inner shaft is set eccentrically with the axis center of the base shaft, and the top end of the base shaft is fixedly connected with the bottom end of the inner shaft and arranged in linkage with each other.

Further, the axis center of the inner shaft is arranged concentrically with the axis center of the base shaft, and the base shaft is cylindrical and arranged vertically.

Further, the top end of the inner shaft is provided with a shaft cover exposed to the top end of the outer shaft, the top end of the outer shaft is provided with a supporting surface for supporting the shaft cover, and the bottom surface of the shaft cover is formed with a Concave-convex structure on the support surface.

Further, the outer shaft includes a tubular body accommodating the inner shaft and a bottom cover integrally connected to the bottom of the tubular body, and the bottom cover is polygonal.

Further, the bottom end of the inner shaft is provided with a fixed head protruding downward beyond the bottom cover, and the fixed head is fixedly connected with the base shaft through a bolt; the bottom surface of the bottom cover is formed with a concave-convex structure .

Further, the hinge shaft assembly also includes a set of locking discs arranged on the base shaft, the locking discs are screwed to the base shaft, and the locking discs are screwed to adjust the shaft cover The crimping force against the bearing surface.

Further, a concave-convex structure is formed on the side surface of the locking disc facing the shaft cover.

Further, the hinge shaft assembly also includes a height adjustment seat installed in the installation hole and a height adjustment plate fixed at the bottom of the height adjustment seat, the height adjustment seat is screwed into the installation hole and Sleeved on the periphery of the base shaft, the height adjustment disc drives the height adjustment seat to move up and down in the installation hole through rotation.

Further, the height adjustment seat includes a threaded section protruding downward beyond the mounting hole and a stop pressing edge located on the top of the threaded section, and the stop pressing edge is pressed downwards around the installation hole, so that The stop pressing edge upwardly receives the bottom of the outer shaft.

In order to solve the above-mentioned technical problems, the utility model also provides the following technical solutions: a refrigeration device, which includes a box body formed with a storage room, a door body for opening or closing the storage room, and the above-mentioned method for The door hinge of the refrigeration equipment, the door hinge connects the box body and the door body.

Compared with the prior art, the utility model realizes the lateral position adjustment of the door body through the eccentric setting between the outer shaft and the inner shaft, and uses the relative rotation between them to bring the displacement variable in the horizontal plane to the outer shaft. , and the range of horizontal position adjustment is also larger, and the adjustment accuracy is better, especially suitable for multi-door refrigerators.

Description of drawings

Fig. 1 is a schematic diagram of the refrigeration equipment of the present invention.

Fig. 2 is a three-dimensional combined view of the door hinge used in refrigeration equipment of the present invention.

Fig. 3 is a three-dimensional exploded view of the door hinge of the present invention.

Fig. 4 is a perspective view of the door hinge of the present invention with the base removed.

Fig. 5 is a schematic diagram of the assembly of the outer shaft and the inner shaft of the door hinge of the present invention.

Fig. 6 is a schematic diagram of the assembly of the inner shaft and the base shaft of the door hinge of the present invention.

Fig. 7 is a schematic diagram of the inner shaft and the base shaft of the door hinge of the present invention.

Fig. 8 is a schematic diagram of installation of the door hinge of the present invention.

Fig. 9 is a view of the internal structure of the hinge shaft assembly of the door hinge of the present invention.

FIG. 10 is a schematic diagram of the rotation track of the outer shaft relative to the inner shaft of the hinge shaft assembly shown in FIG. 9 .

Fig. 11 is a view of the internal structure of the hinge shaft assembly of the door hinge of the present invention in another embodiment.

Fig. 12 is a view of the internal structure of the hinge shaft assembly of the door hinge of another embodiment of the present invention.

Fig. 13 is a perspective view when the length of the base shaft of the door hinge of the present invention is extended.

Fig. 14 is a side view when the length of the base shaft of the door hinge of the present invention is extended.

Detailed ways

The utility model will be described in detail below in conjunction with the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present utility model, and the structural, method, or functional changes made by those skilled in the art according to these embodiments are all included in the protection scope of the present utility model.

It should be understood that terms such as "upper", "lower", "outer", "inner", etc. used herein to indicate relative spatial positions are for convenience of description to describe the relative position of a unit or feature as shown in the drawings. A relationship to another element or feature. The terms of spatial relative position may be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures.

Please refer to Figures 1 to 14, the utility model provides a door hinge A for refrigeration equipment, including a base 100 and a hinge shaft assembly 200 installed on the base 100, the base 100 is made of metal material, used to be fixedly installed on the refrigerator, such as the box body of the refrigerator, and the hinge shaft assembly 200 can rotate and shift relative to the base 100, and it is used to be installed and fixed on the door body of the refrigerator, The installation position can be schematically shown in Fig. 1, so that the door body and the box body are fixedly connected to each other. Therefore, the utility model also relates to a refrigeration device, which includes a box body formed with a storage compartment, a door body for opening or closing the storage compartment, and the above-mentioned door hinge A for the refrigeration device. The door body hinge A connects the box body and the door body. The structure of each component will be described in detail below.

The base 100 is provided with a fixing plate 101 fixed to the box body and a mounting plate 102 for installing the hinge shaft, the fixing plate 101 is arranged perpendicular to the mounting plate 102, preferably, the fixing plate 101 Being vertically arranged and extending longitudinally, the surface of the fixing plate 101 is provided with a fixing hole 103 for fixing to the box body. The mounting plate 102 is integrally connected to one side of the fixing plate 101 and extends along the horizontal direction. The mounting plate 102 is provided with a mounting hole 104 for mounting and accommodating the hinge shaft assembly 200. The mounting hole 104 is from The mounting plate 102 passes through from top to bottom, so that the hinge shaft assembly 200 can pass through the mounting hole 104. Preferably, an annular support edge 105 is provided in the mounting hole 104 for supporting the hinge shaft assembly 200. edge, and threads are formed in the mounting hole 104 .

The hinge shaft assembly 200 includes: an inner shaft 10 , an outer shaft 20 , a base shaft 30 , a height adjustment seat 40 , a height adjustment disc 50 , a locking disc 60 , and a turntable 70 . As shown in Figure 3, the above components are assembled to form a whole, and can cooperate with each other to realize vertical height adjustment and lateral distance adjustment, so as to meet the vertical and horizontal adjustment requirements of the door body. in:

The inner shaft 10 extends vertically, and it is provided with a long shaft body 11 and a shaft cover 12 connected to the top of the shaft body 11, as shown in Figures 6 and 7, the shaft body 11 is cylindrical and self-contained. Extending from top to bottom and inserting into the outer shaft 20, and the bottom of the shaft body 11 is provided with a fixed head 13 that cooperates with the base shaft 30, and a pair of straight surfaces and transverse penetrations are formed on both sides of the fixed head 13. The pair of pin holes P on the flat surface, the fixed head 13 is used to insert into the base shaft 30, and use the two flat surfaces to realize the engagement and limit with the base shaft 30. At the same time, with the help of a pin Inserting the shaft 14 into the pin hole P can make the fixed head 13 and the base shaft 30 achieve a more reliable and firm connection. Preferably, the shaft cover 12 is circular, and its bottom surface is crimped on the outer shaft 20, and a concave-convex structure Q (such as a sawtooth structure) is formed on the bottom surface of the shaft cover 12 for locking the shaft cover 12 and the outer shaft 20 prevent the relative rotation of the two.

The outer shaft 20 is provided with a tubular body 21 and a bottom cover 22 integrally connected to the bottom of the body 21 , as shown in FIGS. 4 and 5 . Wherein, the body 21 is a hollow structure, the inside of which is used for the passage of the inner shaft 10, and the top of the body 21 is provided with an annular support surface 23 that supports the shaft cover 12 upwards, and the support surface 23 is in contact with the shaft cover 12. The concave-convex structure Q (such as a sawtooth structure) on the bottom surface of the shaft cover 12 abuts against it. The bottom cover 22 is integrated with the body 21, and the bottom cover 22 is circular. Preferably, the bottom surface of the bottom cover 22 is also formed with a concave-convex structure Q (such as a sawtooth structure), and the concave-convex structure Q ( Such as a sawtooth structure) surrounds the inner shaft 10 around. Preferably, the bottom cover 22 is polygonal (eg, hexagonal), so that it can be rotated with a tool such as a wrench. The outer shaft 20 is sheathed on the periphery of the inner shaft 10, the inner shaft 10 passes through the outer shaft 20 from top to bottom, and the fixed head 13 at the bottom of the inner shaft 10 protrudes downwards out of the outer shaft 10. The bottom cover 22 of the shaft 20 is used for snap-fitting with the base shaft 30 under the bottom cover 22 . The outer shaft 20 is used to connect and cooperate with the door body of the refrigerator, and it is used as a rotating shaft part of the door body to help the door body to open and close around it.

The base shaft 30 is located directly below the outer shaft 20, its top end is provided with a socket 31 for accommodating the fixed head 13, and its bottom end is provided with a turret 32 connected to the turntable 70, as shown in Figure 3 and 7, specifically, the top end of the base shaft 30 is also provided with a pin hole P transversely passing through the insertion hole 31, and the pin hole P corresponds to the pin hole P on the fixed head 13. When the inner After the fixed head 13 of the shaft 10 is inserted into the insertion hole 31, a pin shaft 14 is inserted transversely into the pin hole P on the base shaft 30 and the fixed head 13, thereby fixing the fixed head 13 of the inner shaft 10 to the top end of the base shaft 30 position. Preferably, threads 33 between the top end and the bottom end are distributed on the surface of the base shaft 30 , and the base shaft 30 is cylindrical and vertically arranged.

The height adjustment seat 40 is installed on the mounting plate 102 of the base shaft 30 from top to bottom, and is installed in the installation hole 104 of the installation hole 104, as shown in Figure 3 and Figure 8, and the height adjustment seat 40 is upward It abuts against the bottom cover 22 of the outer shaft 20 and presses against the concave-convex structure Q (such as a sawtooth structure) on the bottom surface of the bottom cover 22 . The height adjustment seat 40 is provided with a threaded section 41 and a circular stopper 42 at the top of the threaded section 41, the threaded section 41 is screwed into the installation hole 104 and fixedly combined with the installation hole 104, And the threaded section 41 protrudes downwards through the installation hole 104 to be fixedly connected with the height adjustment plate 50 below the installation plate 102 . The circular retaining edge 42 is accommodated in the installation hole 104 and is crimped on the annular support edge 105 in the installation hole 104, which can be stopped when the threaded section 41 is screwed down. Preferably, the circular stop pressing edge 42 abuts upward against the concave-convex structure Q (such as a sawtooth structure) on the bottom surface of the bottom cover 22 .

The height adjustment plate 50 is installed below the mounting plate 102 from bottom to top, and is used to be fixedly connected with the bottom end of the height adjustment seat 40, as shown in Figure 3 and Figure 8, preferably, the height adjustment plate 50 is a polygon (such as a hexagon), so that the wrench can screw it, and the height adjustment plate 50 is integrally connected with the bottom end of the threaded section 41 of the height adjustment seat 40, such as: adopt welding, riveting, etc. to fix each other connected so that the rotation of the height adjustment disc 50 can synchronously drive the rotation of the height adjustment seat 40 . Therefore, it is only necessary to use a wrench to rotate and adjust the height adjustment plate 50 below the installation plate 102 , so that the height adjustment seat 40 can realize up and down movement by threading with the installation hole 104 .

The locking disc 60 is located below the height adjusting disc 50, as shown in FIG. The concave-convex structure Q (such as a sawtooth structure) abuts against the bottom surface of the height adjusting plate 50 . Preferably, the locking disc 60 is polygonal (such as hexagonal), so as to facilitate screwing operation by a wrench. A through hole 61 for accommodating the base shaft 30 is defined at the center of the locking disc 60 , the through hole 61 allows the base shaft 30 to pass through and is screwed to the base shaft 30 . During installation, the lock plate 60 needs to be screwed onto the base shaft 30 from bottom to top until it is tightened, and the bottom surface of the height adjustment plate 50 is compressed by using the concave-convex structure Q (such as a sawtooth structure), so that The locking disc 60 and the height adjusting disc 50 are mutually fastened and positioned. It should be noted that, when the locking disc 60 rotates on the base shaft 30, the crimping force of the shaft cover 12 on the top of the inner shaft 10 to the annular support surface 23 on the top of the outer shaft 20 can be adjusted, for example, when rotating clockwise When the disk 60 is locked, the concave-convex structure Q (such as a sawtooth structure) on the bottom surface of the shaft cover 12 presses down on the annular support surface 23, so that the outer shaft 20 and the inner shaft 10 are relatively fixed and locked to each other, and cannot rotate relative to each other; otherwise When the locking disc 60 is rotated counterclockwise, the concave-convex structure Q (such as a sawtooth structure) on the bottom surface of the shaft cover 12 releases the compression on the support surface 23, so that the inner shaft 10 and the outer shaft 20 can rotate relatively. In practice, the locking disc 60 can be flexibly rotated as required, and then the relative rotation of the inner shaft 10 and the outer shaft 20 can be adjusted respectively until the outer shaft 20 is adjusted to the desired position, and then the locking disc 60 can be rotated again to lock That is, this adjustment method can greatly improve the position adjustment accuracy.

The turntable 70 is installed under the locking disk 60, and is sheathed on the bottom end of the base shaft 30, and is fixedly connected with the turret 32 at the bottom end of the base shaft 30, as shown in Fig. 3 and Fig. 8 , Preferably, the turntable 70 is polygonal (such as hexagonal), so as to facilitate the screwing operation of the wrench, and the center of the turntable 70 is provided with an opening for accommodating the turret 32, and the opening is connected with the rotating head 32. The turret 32 can be connected by welding or riveting, so as to maintain a stable and reliable fixed position between the two, so that the rotation of the turntable 70 can drive the rotation of the base shaft 30 .

It can be seen from the above that the height adjustment disc 50, the locking disc 60 and the turntable 70 are all located below the installation plate 102, and are stacked and distributed sequentially from top to bottom for fixing to the height adjustment seat from bottom to top. 40. On the base shaft 30, as shown in Figure 8. The outer shaft 20 is located above the installation plate 102 , while the inner shaft 10 and the height adjustment seat 40 pass through the installation plate 102 from top to bottom in the vertical direction. The base shaft 30 is accommodated in the height adjustment seat 40 , and the bottom end of the base shaft 30 protrudes downward from the height adjustment seat 40 , and passes through the height adjustment disc 50 and the lock from top to bottom. disc 60 to reach the turntable 70 and realize a fixed connection with the turntable 70 . It can be seen that after the door body of the refrigerator is installed on the outer shaft 20, only the height adjustment disc 50 under the installation plate 102 can be rotated to drive the height adjustment seat 40 to move in the installation hole 104 of the installation plate 102. Lifting movement, thereby changing the height position of the height adjustment seat 40, and the height adjustment seat 40 drives the lifting of the outer shaft 20 to achieve the purpose of vertically adjusting the door body.

It should be noted that the hinge shaft assembly 200 of the present invention can also realize the lateral position adjustment of the door body. The method or principle of the lateral position adjustment will be described below as one of the preferred embodiments of the present invention.

The inner shaft 10 and the outer shaft 20 are arranged inside and outside and can rotate relative to each other, especially the outer shaft 20 and the inner shaft 10 are arranged eccentrically, that is, the axes of the two keep a certain distance L, and the axis of the outer shaft 20 is set Center O1, the axis O2 of the inner shaft 10, and the axis O3 of the base shaft 30, as shown in Figure 9 and Figure 10, the utility model adjusts the relative positions between the three axis O1, O2, O3, so that There is a positional deviation between at least two shaft centers (that is, they are eccentrically arranged), and then a positional variable along the horizontal direction is generated during the relative rotation of the two, so that the position of the outer shaft 20 can be adjusted in the horizontal plane, so that it can Displacement in the X direction and the Y direction is realized during the above rotation process, and the purpose of lateral position adjustment is achieved.

Preferably, the outer shaft 20 is set concentrically with the base shaft 30 but eccentrically with the inner shaft 10 as an example, as shown in Fig. 9 and Fig. 10. At this time, keep the base shaft 30 and the inner shaft 10 still, and only need to rotate the outer shaft 20, so that the outer shaft 20 rotates around the axis of the inner shaft 10, the position of the outer shaft 20 in the X direction and the Y direction can be adjusted (refer to the two dotted circles in Figure 10, which are the displacement directions of the outer shaft 20 in F1 and F2 example of the motion trajectory above), to realize the lateral position adjustment of the door body.

As another alternative, the utility model can also adopt the scheme that the inner shaft 10 is concentric with the base shaft 30 but eccentrically arranged with the outer shaft 20, as shown in Figure 11, when the outer shaft 20 is around the base shaft 30 or the inner shaft 10 When the shaft center of the shaft rotates, the outer shaft 20 will generate displacement variables in the X and Y directions.

As yet another alternative, the utility model can also adopt a scheme in which the inner shaft 10, the outer shaft 20, and the base shaft 30 are mutually eccentrically arranged. As shown in Figure 12, when the outer shaft 20 rotates around the axis of the base shaft 30, When the axis 10 rotates around the axis of the base axis 30, the outer axis 20 will produce displacement variables in the X and Y directions; when the outer axis 20 rotates around the axis of the inner axis 10, the outer axis 20 will also produce displacements in the X and Y directions variable; when the outer shaft 20 rotates around the axis of the inner shaft 10, and the inner shaft 10 rotates around the axis of the base shaft 30, that is, when the inner shaft 10 and the outer shaft 20 rotate synchronously, the outer shaft 20 will also produce X and Y directions. displacement variable. In this solution, the lateral position adjustment of the outer shaft 20 can be realized by means of the eccentric arrangement of the outer shaft 20 and the inner shaft 10 , combined with the eccentrically arranged rotatable base shaft 30 , a wider range of lateral position can be provided for the outer shaft 20 position variable, allowing for higher precision lateral position adjustments.

It can be seen that in the above two schemes shown in Figure 11 and Figure 12, no matter which scheme, at least two axes need to be kept eccentrically arranged, and it is precisely because of the existence of eccentricity that the outer shaft 20 is rotated during rotation. Displacement variables in the X and Y directions are generated, thereby satisfying the functional requirements for adjusting the lateral position of the external shaft 20 .

It should be noted that, in practice, the installation direction or usage of the hinge shaft assembly 200 of the present invention depends on its installation location. If it is used as an upper hinge, it is installed on the top of the refrigerator box. The outer shaft 20 is located below the mounting plate 102 and extends downwards; if it is used as an intermediate hinge, it is installed in the middle of the refrigerator cabinet, and the outer shaft 20 can be selected to face up or down as the case may be; When the lower hinge is in use, it is installed on the bottom of the refrigerator box, and the outer shaft 20 is located above the mounting plate 102 and is set upward. The above three specific installation methods can be combined as shown in Figure 1. It is worth mentioning that, when used as an intermediate hinge, it is only necessary to properly extend the length of the base shaft 30 in the hinge shaft assembly 200 described in the present invention, that is, to pass one end of the base shaft 30 downward Continue to extend after the turntable 70, so that it serves as the shaft body of the lower side door body (as shown in Figure 13 and Figure 14), that is, the upper side door body and the base shaft 30 are respectively installed on the upper side door body and In this way, the lower door body can be connected with the upper and lower door bodies at the same time with the same hinge shaft assembly 200, which saves the trouble of installing two hinge shaft assemblies 200, and is especially suitable for installation in the middle of the refrigerator.

In summary, the utility model brings the displacement variable in the horizontal plane to the outer shaft 20 through the eccentric setting among the outer shaft 20, the inner shaft 10 and the base shaft 30, and through the relative rotation between them, and realizes the door-to-door The horizontal position adjustment of the body, compared with the prior art, the utility model can bring a wider range of displacement variables with the help of the axis eccentricity of the three, and the adjustment accuracy is also better, and the overall operation is also more convenient and quick, especially suitable for Multi-door refrigerator.

It should be understood that although this description is described according to implementation modes, not each implementation mode only contains an independent technical solution, and this description in the description is only for clarity, and those skilled in the art should take the description as a whole, and each The technical solutions in the embodiments can also be properly combined to form other embodiments that can be understood by those skilled in the art.

The series of detailed descriptions listed above are only specific descriptions for the feasible implementation modes of the present utility model, and they are not used to limit the protection scope of the present utility model. Embodiments or modifications should be included within the protection scope of the present utility model.

Claims (11)

1. A door hinge for refrigeration equipment, comprising a base and a hinge shaft assembly mounted on the base, the base is provided with a mounting hole for the hinge shaft assembly to pass through, characterized in that: The hinge shaft assembly includes: a vertically extending inner shaft, an outer shaft set on the inner shaft, a base shaft fixed at the bottom end of the inner shaft, and a turntable fixed at the bottom end of the base shaft; the shaft of the inner shaft The center and the axis center of the outer shaft are set eccentrically. 2. The door hinge for refrigeration equipment according to claim 1, characterized in that: the axis center of the inner shaft and the axis center of the base shaft are arranged eccentrically, and the top end of the base shaft is aligned with the bottom of the inner shaft The ends are fixedly connected and set in linkage with each other. 3. The door hinge for refrigeration equipment according to claim 1, characterized in that: the axis of the inner shaft is set concentrically with the axis of the base shaft, and the base shaft is cylindrical and vertical set up. 4. The door hinge for refrigeration equipment according to claim 1, characterized in that: the top end of the inner shaft is provided with a shaft cover exposed to the top end of the outer shaft, and the top end of the outer shaft is provided with a support The supporting surface of the shaft cover, the bottom surface of the shaft cover is formed with a concave-convex structure that is crimped on the supporting surface. 5. The door hinge for refrigeration equipment as claimed in claim 4, wherein the outer shaft comprises a tubular body accommodating the inner shaft and a bottom cover integrally connected to the bottom of the tubular body, the bottom The cover is polygonal. 6. The door hinge for refrigeration equipment according to claim 5, characterized in that: the bottom end of the inner shaft is provided with a fixed head protruding downward beyond the bottom cover, and the fixed head is connected to the bottom cover The base shaft is fixedly connected by a bolt; the bottom surface of the bottom cover is formed with a concave-convex structure. 7. The door hinge for refrigeration equipment according to claim 4, characterized in that: the hinge shaft assembly further comprises a set of locking discs arranged on the base shaft, the locking discs and the base shaft The shaft is connected through threads, and the locking disk is screwed to adjust the crimping force of the shaft cover on the supporting surface. 8 . The door hinge for refrigeration equipment according to claim 7 , wherein a concave-convex structure is formed on a surface of the locking plate facing the shaft cover. 9 . 9. The door hinge for refrigeration equipment according to any one of claims 1 to 8, characterized in that: the hinge shaft assembly further includes a height adjustment seat installed in the installation hole and a The height adjustment disc at the bottom of the height adjustment base, the height adjustment base is screwed into the installation hole and sleeved on the periphery of the base shaft, the height adjustment disc drives the height adjustment base in the installation hole by rotating lift. 10. The door hinge for refrigeration equipment according to claim 9, characterized in that: the height adjustment seat comprises a threaded section protruding downward beyond the installation hole and a stop pressing edge at the top of the threaded section, The stop pressing edge is pressed downwardly around the installation hole, and the stop pressing edge is upwardly connected to the bottom of the outer shaft. 11. A refrigeration device, characterized in that: it includes a box body formed with a storage compartment, and a door body for opening or closing the storage compartment, as described in any one of claims 1 to 10 for refrigeration equipment The door hinge is used to connect the box body and the door body.

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