Rotating shaft assembly, lock catch mechanism and movable refrigerator

Abstract

The utility model relates to the field of refrigerators, in particular to a rotating shaft assembly, a lock catch mechanism and a movable refrigerator, the rotating shaft assembly is used for being matched with a pin shaft of the lock catch mechanism, the rotating shaft assembly comprises a sleeve shaft, a lock hook and a limiting piece, the sleeve shaft is configured to rotate around the rotating axis of the sleeve shaft, and the sleeve shaft is provided with a first limiting part; the lock hook is connected to the sleeve shaft and synchronously rotates along with the sleeve shaft, so that the lock hook is provided with a locking position used for being matched with the pin shaft in a limiting mode and an unlocking position separated from the pin shaft. The limiting piece is located on one side of the sleeve shaft and provided with a second limiting part, and the second limiting part is matched with the first limiting part so as to limit the rotating range of the sleeve shaft and enable the lock hook to move between the locking position and the unlocking position. The use reliability of the lock hook can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of refrigerators, in particular to a rotating shaft assembly, a locking mechanism and a mobile refrigerator. BACKGROUND

[0002] The mobile refrigerator includes a door body and a box body, and the door body and the box body are generally locked and unlocked through cooperation of a locking hook and a pin shaft. In the related art, a limiting structure is arranged on the door body of the mobile refrigerator, and when the locking hook is rotated to a predetermined position, the limiting structure abuts against the locking hook to limit the rotation angle of the locking hook. However, the limiting structure is arranged on only one side of the locking hook, and in the use process of the mobile refrigerator, the locking hook will be repeatedly limited by the limiting structure of the box body, thereby causing the limiting structure and the locking hook to be easily deformed and worn, affecting the service life of the box body, the limiting structure and the locking hook, and making the use of the locking hook unreliable. CONTENT OF THE UTILITY MODEL

[0003] Therefore, the present application provides a rotating shaft assembly, a locking mechanism and a mobile refrigerator, which can improve the reliability of the use of the locking hook.

[0004] In a first aspect, an embodiment of the present application provides a rotating shaft assembly applied to cooperation with a pin shaft. The rotating shaft assembly includes a sleeve shaft, a locking hook and a limiting sheet. The sleeve shaft is configured to be rotatable about a rotation axis thereof, and the sleeve shaft is provided with a first limiting portion. The locking hook is connected to the sleeve shaft and synchronously rotatable with the sleeve shaft, so that the locking hook has a locking position for limiting cooperation with the pin shaft and an unlocking position separated from the pin shaft. The limiting sheet is located on one side of the sleeve shaft, and the limiting sheet has a second limiting portion. The second limiting portion cooperates with the first limiting portion to limit the rotation range of the sleeve shaft and to move the locking hook between the locking position and the unlocking position.

[0005] By arranging the first limiting portion on the sleeve shaft and the second limiting portion on the limiting sheet, the rotation angle of the sleeve shaft is limited through cooperation of the first limiting portion and the second limiting portion, so that when the locking hook is limited, the limiting structure does not have to abut against the locking hook, thereby reducing the wear of the locking hook, improving the service life and the reliability of the use of the locking hook. Furthermore, the cooperation of the first limiting portion and the second limiting portion can move the locking hook between the locking position and the unlocking position, which can improve the problem that the locking hook moves excessively and collides with the pin shaft or other parts of the mobile refrigerator, thereby further improving the reliability of the use of the locking hook.

[0006] In at least one embodiment, the second limiting portion includes a first sub-portion and a second sub-portion spaced apart, and at least part of the first limiting portion is located between the first sub-portion and the second sub-portion. When the locking hook is in the locking position, the first sub-portion is limited in cooperation with the first limiting portion, and when the locking hook is in the unlocking position, the second sub-portion is limited in cooperation with the second limiting portion.

[0007] By setting the first sub-portion and the second sub-portion on the second limiting portion, on the one hand, when the locking hook moves to the locking position, the first sub-portion and the first limiting portion are limited to improve the problem that the locking hook collides with the pin shaft and is scratched due to excessive rotation of the locking hook, thereby reducing the wear between the locking hook and the pin shaft and improving the reliability of the locking hook.

[0008] In at least one embodiment, the limiting sheet is provided with a through hole, the first limiting portion includes a limiting protrusion, the through hole has two limiting hole walls, and the two limiting hole walls are oppositely arranged and are respectively the first sub-portion and the second sub-portion.

[0009] By setting the first sub-portion and the second sub-portion as the two limiting hole walls of the through hole, the stress between the limiting protrusion and the limiting hole walls of the through hole when limited can be applied to the entire limiting sheet, and therefore, the limiting cooperation between the limiting protrusion and the limiting hole walls of the through hole has better structural strength than the limiting cooperation between the two protrusions.

[0010] In at least one embodiment, the limiting protrusion is provided with two limiting protrusions, the through hole includes two limiting hole segments, each limiting hole segment has two limiting hole walls, and the two limiting protrusions and the two limiting hole segments are one-to-one correspondingly arranged; wherein the two limiting protrusions are symmetrically arranged with the rotation axis as the symmetric axis.

[0011] By setting the limiting protrusion as two limiting protrusions and the through hole as two limiting hole segments, compared with one limiting protrusion, the two limiting protrusions and the corresponding limiting hole segments are cooperated to improve the structural strength of the first limiting portion and the second limiting portion, thereby improving the reliability of the first limiting portion and the second limiting portion; and the two limiting protrusions are symmetrically arranged with the rotation axis of the sleeve as the symmetric axis, when the two limiting protrusions are respectively limited with the limiting hole walls of the two limiting hole segments, the two limiting protrusions apply opposite forces to the two limiting hole segments, thereby making the stress of the limiting sheet uniform and the limiting sheet not easy to deform.

[0012] In at least one embodiment, the limiting protrusion is provided with multiple limiting protrusions, the through hole has multiple limiting hole segments, each limiting hole segment has two limiting hole walls, the multiple limiting protrusions and the multiple limiting hole segments are one-to-one correspondingly arranged, and the multiple limiting protrusions are arranged along the circumference of the sleeve.

[0013] During the use of the rotating shaft assembly, the limiting protrusion will engage with the limiting hole wall multiple times for limiting. By setting multiple limiting protrusions, when the wear of one limiting protrusion is more severe, the limiting of the sleeve shaft can be achieved through the engagement between other limiting protrusions and the limiting hole section, thereby improving the reliability of the first limiting part and the second limiting part.

[0014] In at least one embodiment, the sleeve shaft has an end face along the direction of the through hole, a limiting protrusion is provided on the end face, the limiting protrusion passes through the through hole, and the side of the limiting protrusion away from the end face is flush with the side of the limiting piece away from the end face.

[0015] By setting the limiting protrusion flush with the limiting plate, the limiting protrusion will not protrude beyond the limiting plate, thus improving the problem that the protruding limiting protrusion can easily scratch other parts of the moving refrigerator.

[0016] In some embodiments, the end face of the sleeve abuts against the limiting piece.

[0017] By using the sleeve shaft to abut against the limiting piece, the position between the limiting protrusion and the through hole can be positioned, and the length of the limiting protrusion extending into the through hole can be limited, thereby improving the reliability and convenience of the connection between the limiting protrusion and the through hole.

[0018] In at least one embodiment, the sleeve shaft is provided with a third limiting part, and the limiting plate is provided with a fourth limiting part. The third limiting part and the fourth limiting part are rotatably engaged so that the sleeve shaft can rotate relative to the limiting plate.

[0019] The radial position of the sleeve shaft can be restricted by the cooperation of the third and fourth limiting parts, so that the connection between the sleeve shaft and the limiting piece is tight.

[0020] In at least one embodiment, the third limiting part is a limiting boss, and the fourth limiting part is a rotating hole. The limiting boss passes through the rotating hole and can rotate relative to the rotating hole.

[0021] By inserting the limiting boss into the rotating hole, and by limiting the radial position of the limiting boss by the inner wall of the rotating hole, the connection between the sleeve shaft and the limiting piece is made tight.

[0022] In a second aspect, one embodiment of this application provides a locking mechanism, including the aforementioned rotating shaft assembly, pin, and drive shaft assembly. The rotating shaft assembly is used to be disposed on the door of a portable refrigerator; the pin is used to be disposed on the cabinet of the portable refrigerator; the locking hook of the rotating shaft assembly has a locking position that cooperates with the pin and an unlocking position that is separated from the pin; the drive shaft assembly is connected to the rotating shaft assembly and disposed on the door, and the drive shaft assembly is configured to drive the sleeve shaft of the rotating shaft assembly to rotate.

[0023] By applying the aforementioned rotating shaft assembly to the locking mechanism, a first limiting part is provided on the sleeve shaft, and a second limiting part is provided on the limiting plate. The rotation angle of the sleeve shaft is limited by the cooperation of the first and second limiting parts, thereby limiting the rotation angle of the locking hook. Both the first and second limiting parts are provided on the locking mechanism. Compared with the related technology where the limiting structure is provided on the door of the mobile refrigerator, the provision of the first and second limiting parts in this application improves the integration of the limiting structure and the locking mechanism.

[0024] In a third aspect, an embodiment of this application provides a portable refrigerator, including the aforementioned locking mechanism, door, and cabinet. The rotating shaft assembly and transmission shaft assembly of the locking mechanism are disposed on the door; the pin of the locking mechanism is disposed on the cabinet, and the rotating shaft assembly of the locking mechanism is configured to have a locking position that cooperates with the pin and an unlocking position that is separated from the pin.

[0025] By applying the locking mechanism with the aforementioned rotating shaft assembly to a portable refrigerator, the rotation angle of the sleeve shaft is limited by the cooperation of the first and second limiting parts on the locking mechanism. This means that when the locking hook is locked, the limiting structure does not need to abut against the locking hook, thereby reducing wear on the locking hook and improving its service life and reliability. Furthermore, the cooperation of the first and second limiting parts allows the locking hook to move between the locked and unlocked positions, which can improve the problem of excessive movement of the locking hook causing collisions with the pin shaft or other parts of the portable refrigerator, thereby further improving the reliability of the locking hook. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation on the scope.

[0027] Figure 1 A perspective view of a portable refrigerator provided in an embodiment of this application;

[0028] Figure 2 A schematic diagram of the locking hook mechanism of a portable refrigerator installed on the cabinet according to an embodiment of this application;

[0029] Figure 3 for Figure 2 An enlarged schematic diagram of area A of the portable refrigerator;

[0030] Figure 4 A schematic diagram showing the connection between the rotating shaft assembly and the transmission shaft assembly of the locking mechanism provided in an embodiment of this application;

[0031] Figure 5 for Figure 4 An enlarged schematic diagram of area B of the locking mechanism;

[0032] Figure 6 A schematic diagram of the structure of the locking mechanism with the rotating shaft assembly and the limiting piece separated, provided in an embodiment of this application;

[0033] Figure 7 for Figure 6 An enlarged schematic diagram of region C in the locking mechanism;

[0034] Figure 8 This is a cross-sectional view of a portable refrigerator provided in one embodiment of this application.

[0035] Explanation of main component symbols

[0036] 100. Portable refrigerator; 200. Locking mechanism; 300. Door; 400. Cabinet; 201. Rotating shaft assembly; 202. Pin; 203. Drive shaft assembly; 10. Sleeve shaft; 11. First limiting part; 20. Locking hook; 30. Limiting piece; 31. Second limiting part; 311. First sub-part; 312. Second sub-part; 310. Through hole; 3101. Limiting hole wall; 3102. Limiting hole section; 320. Fourth limiting part; 12. Third limiting part; 111. End face; 301. Mounting wall; 110. Limiting protrusion; 40. Handle; 50. Drive shaft; O. Rotation axis. Detailed Implementation

[0037] The technical solutions of the embodiments of this application will be described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0039] In related technologies, portable refrigerators include a door and a cabinet, which are locked and unlocked by a locking mechanism. The locking mechanism includes a hook and a pin. The pin is fixedly installed in the cabinet, while the hook is rotatably mounted to either engage with or disengage from the pin. A limiting structure is provided on the door, located on one side of the hook, to restrict its rotation angle through its engagement with the hook. However, during refrigerator use, this limiting structure repeatedly collides with the hook, causing deformation and wear to both the limiting structure and the hook, affecting the lifespan of the cabinet, limiting structure, and hook, and making the hook unreliable.

[0040] An embodiment of this application provides a pivot assembly for engaging with a pin. The pivot assembly includes a sleeve, a locking hook, and a limiting plate. The sleeve is configured to rotate about its rotation axis and has a first limiting portion. The locking hook is connected to the sleeve and rotates synchronously with the sleeve, so that the locking hook has a locked position for engaging with the pin and an unlocked position for disengaging from the pin. The limiting plate is located on one side of the sleeve and has a second limiting portion. The second limiting portion and the first limiting portion cooperate to limit the rotation range of the sleeve and allow the locking hook to move between the locked position and the unlocked position.

[0041] By setting a first limiting part on the sleeve shaft and a second limiting part on the limiting plate, the rotation angle of the sleeve shaft is limited by the cooperation of the first and second limiting parts. When limiting the lock hook, the limiting structure does not need to abut against the lock hook, thereby reducing wear on the lock hook and improving its service life and reliability. Furthermore, the cooperation of the first and second limiting parts allows the lock hook to move between the locked and unlocked positions, which can improve the problem of excessive movement of the lock hook causing collisions with the pin shaft or other parts of the moving refrigerator, thereby further improving the reliability of the lock hook.

[0042] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0043] Please refer to Figure 1 and Figure 2 One embodiment of this application provides a portable refrigerator 100 and a locking mechanism 200.

[0044] Alternatively, the mobile refrigerator 100 can be a vehicle-mounted refrigerator for installation on a vehicle; or it can be a portable refrigerator with wheels.

[0045] Please see Figure 1 , Figure 2 and Figure 3 In some embodiments, the portable refrigerator 100 includes a door 300 and a cabinet 400. The locking mechanism 200 includes a pivot assembly 201 and a pin 202. The pivot assembly 201 is disposed on the door 300; the pin 202 is disposed on the cabinet 400. The pivot assembly 201 has a locking position that cooperates with the pin 202 and an unlocking position that is separated from the pin 202.

[0046] Please see Figure 3 and Figure 4In some embodiments, the rotating shaft assembly 201 includes a sleeve shaft 10, a locking hook 20, and a limiting piece 30. The sleeve shaft 10 is configured to rotate about its rotation axis O and has a first limiting portion 11. The locking hook 20 is connected to the sleeve shaft 10 and rotates synchronously with the sleeve shaft 10, so that the locking hook 20 has a locking position for engaging with the pin 202 and an unlocking position for disengaging from the pin 202. The limiting piece 30 is located on one side of the sleeve shaft 10 and has a second limiting portion 31. The second limiting portion 31 and the first limiting portion 11 cooperate to limit the rotation range of the sleeve shaft 10 and allow the locking hook 20 to move between the locking position and the unlocking position.

[0047] By providing a first limiting part 11 on the sleeve shaft 10 and a second limiting part 31 on the limiting piece 30, the rotation angle of the sleeve shaft 10 is limited by the cooperation of the first limiting part 11 and the second limiting part 31. When limiting the locking hook 20, the limiting structure does not need to abut against the locking hook 20, thereby reducing wear on the locking hook 20 and improving the service life and reliability of the locking hook 20. Furthermore, the movement of the locking hook 20 between the locked position and the unlocked position can improve the problem of excessive movement of the locking hook 20 causing collision with the pin shaft 202 or the components of the moving refrigerator, thereby further improving the reliability of the locking hook 20.

[0048] Among them, the rotation axis O is the central axis of the sleeve shaft 10.

[0049] Please see Figures 4 to 7 In some embodiments, the second limiting portion 31 includes a first sub-portion 311 and a second sub-portion 312 spaced apart. At least a portion of the first limiting portion 11 is located between the first sub-portion 311 and the second sub-portion 312, so that when the locking hook 20 is in the locked position, the first sub-portion 311 is limited to engage with the first limiting portion 11, and when the locking hook 20 is in the unlocked position, the second sub-portion 312 is limited to engage with the second limiting portion 31.

[0050] By providing a first sub-part 311 and a second sub-part 312 on the second limiting part 31, on the one hand, when the locking hook 20 moves to the locked position, the first sub-part 311 and the first limiting part 11 limit the locking mechanism to improve the problem of collision and scratching between the locking hook 20 and the pin 202 caused by excessive rotation of the locking hook 20, thereby reducing wear between the locking hook 20 and the pin 202 and improving the reliability of the locking hook 20; on the other hand, when the locking hook 20 moves to the unlocked position, the second sub-part 312 and the second limiting part 31 limit the locking mechanism to improve the problem of collision and scratching between the locking hook 20 and other parts of the mobile refrigerator (such as the door 300 of the mobile refrigerator 100) caused by excessive movement of the locking hook 20, thereby further improving the reliability of the locking hook 20.

[0051] In the first embodiment of the first limiting portion 11 and the second limiting portion 31, the first sub-part 311 and the second sub-part 312 are both protrusions. The first sub-part 311 and the second sub-part 312 are disposed on one side surface of the limiting piece 30 in the thickness direction. The first limiting portion 11 includes a limiting protrusion 110, at least a portion of which is disposed between the two protrusions (the first sub-part 311 and the second sub-part 312).

[0052] Please see Figures 4 to 7 In the second embodiment of the first limiting part 11 and the second limiting part 31, the limiting piece 30 is provided with a through hole 310. The first limiting part 11 includes a limiting protrusion 110. The through hole 310 has two limiting hole walls 3101, which are arranged opposite to each other. The two limiting hole walls 3101 are respectively a first sub-part 311 and a second sub-part 312. Through the above arrangement, the locking hook 20 is limited when it is in the locked position and the unlocked position, which improves the reliability of the use of the locking hook 20. Moreover, compared with the first embodiment of the first limiting part 11 and the second limiting part 31, the force during the limiting engagement between the limiting protrusion 110 and the limiting hole wall 3101 of the through hole 310 can be applied to the entire limiting piece 30. Therefore, the limiting engagement between the limiting protrusion 110 and the limiting hole wall 3101 of the through hole 310 has better structural strength than the limiting engagement between the two protrusions.

[0053] Please see Figure 5 and Figure 7 In some embodiments, two limiting protrusions 110 are provided, and the through hole 310 includes two limiting hole segments 3102. Each limiting hole segment 3102 has two limiting hole walls 3101. The two limiting protrusions 110 and the two limiting hole segments 3102 are provided in a one-to-one correspondence. The two limiting protrusions 110 are symmetrically arranged with the rotation axis O of the sleeve shaft 10 as the axis of symmetry.

[0054] By setting two limiting protrusions 110 and providing two limiting hole segments 3102 in the through hole 310, compared to one limiting protrusion 110, the two limiting protrusions 110 respectively cooperate with the corresponding limiting hole segments 3102, which improves the structural strength of the first limiting part 11 and the second limiting part 31, thereby improving the reliability of the first limiting part 11 and the second limiting part 31 in use; and the two limiting protrusions 110 are symmetrically arranged with the rotation axis O of the sleeve shaft 10 as the axis of symmetry. When the two limiting protrusions 110 respectively cooperate with the limiting hole walls 3101 of the two limiting hole segments 3102, the two limiting protrusions 110 apply opposite forces to the two limiting hole segments 3102, thereby making the force on the limiting piece 30 uniform and the limiting piece 30 less prone to deformation.

[0055] In some embodiments, multiple limiting protrusions 110 are provided, and the through hole 310 includes multiple limiting hole segments 3102. Each limiting hole segment 3102 has two limiting hole walls 3101. The multiple limiting protrusions 110 and the multiple limiting hole segments 3102 are provided in a one-to-one correspondence. The multiple limiting protrusions 110 are spaced apart along the circumferential direction of the sleeve shaft 10.

[0056] During the use of the rotating shaft assembly 201, the limiting protrusion 110 will engage with the limiting hole wall 3101 multiple times for limiting. By setting multiple limiting protrusions 110, when the wear of one limiting protrusion 110 is more severe, the limiting of the sleeve shaft 10 can be achieved through the engagement between other limiting protrusions 110 and the limiting hole section 3102, thereby improving the reliability of the first limiting part 11 and the second limiting part 31.

[0057] The number of multiple limiting protrusions 110 and multiple limiting hole segments 3102 is greater than or equal to two.

[0058] Specifically, the cross-section of the sleeve 10 is circular; the limiting hole section 3102 is a fan-shaped hole.

[0059] In the third embodiment of the first limiting part 11 and the second limiting part 31, the first limiting part 11 includes a limiting groove (not shown) disposed on the outer peripheral surface of the sleeve shaft 10. The second limiting part 31 has a mating protrusion. The limiting piece 30 has a through hole (through hole 310) for the sleeve shaft 10 to pass through. The mating protrusion is fixedly connected to the inner wall of the through hole, and at least a portion of the mating protrusion is inserted into the limiting groove. The limiting groove has two oppositely disposed groove sidewalls, and the two groove sidewalls respectively engage with the mating protrusion to limit the rotation angle of the sleeve shaft 10.

[0060] In some embodiments, the sleeve shaft 10 has an end face 111 along the direction of the through hole; a limiting protrusion 110 is provided on the end face 111, the limiting protrusion 110 passes through the through hole 310, and the side of the limiting protrusion 110 away from the end face 111 is flush with the side of the limiting piece 30 away from the end face 111, so that the limiting protrusion 110 will not protrude from the limiting piece 30, thereby improving the problem that the protrusion of the limiting protrusion 110 can easily scratch other parts of the mobile refrigerator.

[0061] In some embodiments, the end face 111 of the sleeve 10 abuts against the limiting piece 30. By having the sleeve 10 abut against the limiting piece 30, the position between the limiting protrusion 110 and the through hole 310 can be positioned, and the length of the limiting protrusion 110 extending into the through hole 310 can be limited, thereby improving the reliability and convenience of the connection between the limiting protrusion 110 and the through hole 310.

[0062] Please see Figures 4 to 7In some embodiments, the sleeve 10 is provided with a third limiting part 12, and the limiting piece 30 is provided with a fourth limiting part 320. The third limiting part 12 and the fourth limiting part 320 are rotatably engaged so that the sleeve 10 can rotate relative to the limiting piece 30.

[0063] The radial position of the sleeve 10 can be restricted by the cooperation of the third limiting part 12 and the fourth limiting part 320, so that the connection between the sleeve 10 and the limiting piece 30 is tight.

[0064] In some embodiments, the third limiting part 12 is a limiting boss, and the fourth limiting part 320 is a rotating hole. The limiting boss passes through the rotating hole and can rotate relative to the rotating hole.

[0065] By inserting the limiting boss into the rotating hole, and by limiting the radial position of the limiting boss by the inner wall of the rotating hole, the connection between the sleeve shaft and the limiting piece is made tight.

[0066] In some embodiments, the rotating hole and the through hole 310 are connected.

[0067] In some embodiments, a plurality of limiting hole segments 3102 of the through hole 310 are arranged at intervals along the circumferential direction of the rotating hole.

[0068] Please see Figure 8 In some embodiments, the door body 300 has a mounting groove with a mounting wall 301, and a limiting piece 30 is disposed in the mounting groove and sandwiched between the mounting wall 301 and the end face 111 of the sleeve shaft 10.

[0069] In some embodiments, the limiting protrusion 110, the sleeve shaft 10, and the limiting boss are formed into an integral structure by cutting, so as to simplify the forming and cutting process of the limiting protrusion 110.

[0070] In some embodiments, the limiting protrusion 110 and the limiting boss are an integral structure, and the limiting boss and the sleeve shaft 10 are detachably connected. This allows for the removal and assembly of the limiting boss and the sleeve shaft 10, making it convenient to replace the limiting protrusion 110 and the limiting boss when the limiting protrusion 110 is severely worn, thereby improving the reliability of the rotating shaft assembly 201.

[0071] In related technologies, a limiting structure is provided on the door body. This limiting structure is a protrusion that protrudes towards the lock hook so that the end of the protrusion can cooperate with the lock hook for limiting. The protrusion and the door body are injection molded as a single structure. Since the protrusion is a plastic part, its molding precision is low, the limiting of the lock hook is not accurate enough, and it is prone to aging after long-term use, making the limiting unreliable.

[0072] In some embodiments, the limiting piece 30 is made of metal material, which has better structural strength than plastic parts and can be used for a long time without aging.

[0073] In some embodiments, the limiting protrusion 110 is made of a metal material, and the limiting boss is made of a metal material.

[0074] In some embodiments, the sleeve 10 is made of a metallic material.

[0075] Please see Figures 1 to 3 In some embodiments, the locking mechanism further includes a drive shaft assembly 203 disposed on the door body 300. The drive shaft assembly 203 is connected to and disposed on the door body 300 and is configured to drive the sleeve shaft 10 of the rotating shaft assembly 201 to rotate.

[0076] Please see Figures 1 to 3 In some embodiments, the drive shaft assembly 203 includes a handle 40 and a drive shaft 50. The drive shaft 50 is fixedly connected to the sleeve shaft 10, and the handle 40 is fixedly connected to the drive shaft 50. The drive shaft 50 is disposed on the door body 300 and rotatably disposed about its central axis. The drive shaft 50 is rotated by operating the handle 40 so that the lock hook 20 has a locked position and an unlocked position.

[0077] In some embodiments, the central axis of the sleeve 10 is coaxial with the central axis of the transmission shaft 50.

[0078] In the specific implementation process, when it is necessary to open the door 300, the handle 40 is pulled, causing the handle 40 to rotate toward the side away from the box. Since the handle 40 is fixedly connected to the drive shaft 50, the drive shaft 50 is fixedly connected to the sleeve shaft 10, and the lock hook 20 is fixedly connected to the sleeve shaft 10, the process of pulling the handle 40 will sequentially drive the drive shaft 50, the sleeve shaft 10 and the lock hook 20 to rotate, thereby driving the lock hook 20 to move to the unlock position.

[0079] In some embodiments, two sleeves 10 and limiting plates 30 are provided. Each sleeve 10 includes a first limiting part 11, and each limiting plate 30 includes a second limiting part 31. The first limiting part 11 of each sleeve 10 cooperates with the second limiting part 31 of a limiting plate 30. The two sleeves 10 are respectively connected to the two ends of the transmission shaft 50 in the length direction.

[0080] Furthermore, those skilled in the art should recognize that the above embodiments are merely illustrative of this application and are not intended to limit this application. Any appropriate changes and variations made to the above embodiments within the essential spirit and scope of this application fall within the scope of this application's disclosure.

Claims

1. A rotating shaft assembly, used in conjunction with a pin, characterized in that, The rotating shaft assembly includes: A sleeve shaft is configured to rotate about its axis of rotation, and the sleeve shaft is provided with a first limiting portion; A locking hook is connected to the sleeve shaft and rotates synchronously with the sleeve shaft, so that the locking hook has a locking position for engaging with the pin shaft and an unlocking position for disengaging from the pin shaft. A limiting piece is located on one side of the sleeve shaft. The limiting piece has a second limiting part, which cooperates with the first limiting part to limit the rotation range of the sleeve shaft and allow the locking hook to move between the locked position and the unlocked position.

2. The rotating shaft assembly according to claim 1, characterized in that, The second limiting portion includes a first sub-portion and a second sub-portion spaced apart, with at least a portion of the first limiting portion located between the first sub-portion and the second sub-portion, such that when the lock hook is in the locked position, the first sub-portion engages with the first limiting portion, and when the lock hook is in the unlocked position, the second sub-portion engages with the second limiting portion.

3. The rotating shaft assembly according to claim 2, characterized in that, The limiting piece is provided with a through hole, the first limiting part includes a limiting protrusion, the through hole has two limiting hole walls, the two limiting hole walls are arranged opposite to each other, and the two limiting hole walls are respectively the first sub-part and the second sub-part.

4. The rotating shaft assembly according to claim 3, characterized in that, Two limiting protrusions are provided, and the through hole includes two limiting hole segments. Each limiting hole segment has the two limiting hole walls. The two limiting protrusions and the two limiting hole segments are provided in a one-to-one correspondence. The two limiting protrusions are symmetrically arranged with the rotation axis as the axis of symmetry.

5. The rotating shaft assembly according to claim 3, characterized in that, The limiting protrusions are provided in multiple ways, and the through hole has multiple limiting hole segments. Each limiting hole segment has two limiting hole walls. The multiple limiting protrusions and the multiple limiting hole segments are provided in a one-to-one correspondence. The multiple limiting protrusions are spaced apart along the circumference of the sleeve shaft.

6. The rotating shaft assembly according to claim 3, characterized in that, The sleeve shaft has an end face along the direction in which the through hole passes; wherein: The limiting protrusion is provided on the end face, the limiting protrusion passes through the through hole, and the side of the limiting protrusion away from the end face is flush with the side of the limiting piece away from the end face; and / or The end face of the sleeve abuts against the limiting piece.

7. The shaft assembly according to any one of claims 1 to 6, characterized in that, The sleeve shaft is provided with a third limiting part, and the limiting plate is provided with a fourth limiting part. The third limiting part and the fourth limiting part are rotatably engaged so that the sleeve shaft can rotate relative to the limiting plate.

8. The rotating shaft assembly according to claim 7, characterized in that, The third limiting part is a limiting boss, and the fourth limiting part is a rotating hole. The limiting boss passes through the rotating hole and can rotate relative to the rotating hole.

9. A locking mechanism, characterized in that, include: The pivot assembly according to any one of claims 1 to 8 is used to be disposed on the door of a mobile refrigerator; A pin is used to be installed in the body of the portable refrigerator. The locking hook of the pivot assembly has a locking position that cooperates with the pin and an unlocking position that is separated from the pin. A drive shaft assembly is connected to the rotating shaft assembly and disposed on the door body, the drive shaft assembly being configured to drive the sleeve shaft of the rotating shaft assembly to rotate.

10. A portable refrigerator, characterized in that, include: The locking mechanism as described in claim 9; The door body, the rotating shaft assembly and the transmission shaft assembly of the locking mechanism are disposed on the door body; The housing, wherein the pin of the locking mechanism is disposed in the housing, and the rotating shaft assembly of the locking mechanism is configured to have a locking position that engages with the pin and an unlocking position that is separated from the pin.

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