Key opening structure of food refrigerating machine

Abstract

The utility model discloses a kind of button opening structure of food refrigeration machine, including refrigeration machine main body and cover body, cover body is hinged on refrigeration machine main body by hinged axle, hinged axle outer sleeve is equipped with torsion spring, torsion spring is connected between cover body and refrigeration machine main body, torsion spring has the elastic tendency of driving cover body towards opening state movement;Refrigeration machine main body is equipped with button in one end away from hinged axle, button side has pivot portion, button is rotatably connected on refrigeration machine main body by pivot portion, button includes pressing portion, reset portion and lock tongue portion, refrigeration machine main body is opened with the hole corresponding button, pressing portion at least part exposes outside the hole, cover body is equipped with locking cooperation portion corresponding lock tongue portion, reset portion is equipped with elastic element between refrigeration machine main body, elastic element and reset portion push cooperation, and drive the lock tongue portion of button and the locking cooperation portion of cover body mutually lock. With cover body opening mode simple and convenient, and cover body and refrigeration machine main body are not easy to be stuck between the effect.

Description

Technical Field

[0001] This utility model relates to the field of refrigeration equipment technology, and in particular to a button-operated structure for a food refrigeration machine. Background Technology

[0002] A Chinese patent with publication number CN210602330U discloses a temperature control box, including an upper cover and a lower base. The top surface of the lower base has a recessed cavity. The upper cover covers the lower base to seal the cavity. The lower base is provided with a semiconductor cooling component, which includes a conductive plate, a silicone sealing gasket, a semiconductor cooling chip, and a heat dissipation device. The conductive plate is placed on the inner surface of the cavity. The conductive plate and the cavity are sealed by the silicone sealing gasket. The bottom surface of the conductive plate abuts against the semiconductor cooling chip, so that the semiconductor cooling chip heats or cools the cavity. The heat dissipation device is placed on the bottom surface of the semiconductor cooling chip, and the lower base has a heat dissipation vent corresponding to the heat dissipation device.

[0003] However, the above-mentioned temperature control box has the following drawbacks: Although the top cover of the temperature control box can be manually opened relative to the bottom seat, the top cover is vertically closed on the top of the bottom seat. When the top cover and the edge of the bottom seat are tightly fitted, it is difficult to separate the top cover from the bottom seat to open the top cover. The operation is not convenient and needs to be improved. Utility Model Content

[0004] The purpose of this utility model is to provide a button opening structure for a food refrigeration machine, which has the effect of making the lid easy to open and preventing the lid from getting stuck with the main body of the refrigeration machine.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a button opening structure for a food refrigeration machine, comprising a refrigeration machine body and a cover, one end of the cover being hinged to the refrigeration machine body via a hinge shaft, and the cover having a closed state and an open state relative to the refrigeration machine body, a torsion spring being sleeved on the hinge shaft, the torsion spring being connected between the cover and the refrigeration machine body, and the torsion spring having an elastic tendency to drive the cover to move toward the open state; A button is provided at one end of the refrigerator body away from the hinge axis. The button has a rotating shaft on both sides. The button is rotatably connected to the refrigerator body through the rotating shaft. The button includes a pressing part, a reset part located on one side of the rotating shaft, and a locking tongue part on the other side. The refrigerator body has a clearance hole corresponding to the button. The pressing part is at least partially exposed outside the clearance hole. The cover has a locking engagement part corresponding to the locking tongue part. An elastic element is provided between the reset part and the refrigerator body. The elastic element pushes and engages with the reset part, driving the locking tongue part of the button and the locking engagement part of the cover to lock each other.

[0006] By adopting the above technical solution, when the cover is closed on the main body of the refrigeration unit, one end of the cover is locked and fixed to the latch by the locking engagement part. When it is necessary to open the cover, the operator only needs to press the pressing part of the button, so that the button rotates around the pivot part, causing the latch and the locking engagement part to separate and unlock. At the same time, the reset part presses the elastic element to compress. After the latch and the locking engagement part are unlocked, the torsion spring drives the cover to automatically flip to the open state relative to the main body of the refrigeration unit by its own elastic reset force. When it is necessary to close the cover, simply flip the cover by hand and overcome the elastic reset force of the torsion spring to flip the cover to the closed state relative to the main body of the refrigeration unit until the locking engagement part of the cover and the latch of the button lock each other. At this time, the elastic element pushes the reset part to reset and drives the latch and the locking engagement part to remain in the locked position. This utility model can automatically open the cover by simply pressing the button, which has the effect of simple cover opening and less likely to jam between the cover and the main body of the refrigeration unit.

[0007] A further feature of this invention is that the main body of the refrigeration unit includes a shell and a bracket, the bracket is fixedly installed on the inner wall of the shell, the bracket is provided with a mounting cavity for installing a button and communicating with the clearance hole, the side wall of the mounting cavity is provided with a pin hole corresponding to the rotating shaft, and the rotating shaft is rotatably connected to the corresponding pin hole.

[0008] By adopting the above technical solution, a separate bracket is set to install the button, so that the bracket acts as an independent load-bearing component for the button, which helps to improve the load-bearing strength of the button and thus extend the service life of this utility model.

[0009] A further feature of this invention is that the bracket is provided with a mounting sleeve for mounting an elastic element within the mounting cavity, one end of the elastic element abuts against the bottom of the mounting sleeve, and the other end of the elastic element abuts against the reset part.

[0010] By adopting the above technical solution, the mounting sleeve can position the elastic element during installation, preventing the elastic element from shifting during button pressing.

[0011] A further feature of this invention is that the outer casing includes an anti-detachment portion located at the edge of the clearance hole opening, the reset portion is anti-detachedly engaged with the anti-detachment portion, and a gap is provided between the reset portion and the mounting sleeve for the reset portion to move.

[0012] By adopting the above technical solution, the addition of the anti-detachment part can improve the anti-detachment and blocking effect of the button, thereby improving the overall operational stability of this utility model.

[0013] A further feature of this invention is that the edge of the cover has a downwardly extending outer ring sealing portion, and the top of the outer shell has an inner ring boss portion corresponding to the outer ring sealing portion. The outer shell has an annular groove formed on the outside of the inner ring boss portion. When the cover is closed on the main body of the refrigeration unit, the outer ring sealing portion is engaged and sealed with the inner ring boss portion through the annular groove.

[0014] By adopting the above technical solution, this utility model can improve the sealing performance when the cover is closed on the main body of the refrigeration unit through the nested design of the outer ring sealing part and the inner ring boss part, thereby improving the cold preservation effect.

[0015] A further feature of this invention is that the clearance hole includes an upper opening region and a side opening region that are interconnected. The upper opening region penetrates the upper surface of the housing and communicates with the annular channel, and the side opening region penetrates the side wall of the housing.

[0016] By adopting the above technical solution, the synergistic effect of the upper opening area and the side opening area can effectively reduce the interference between the locking part and the refrigeration unit body when the cover moves to the closed state relative to the refrigeration unit body. In addition, the upper opening area and the side opening area are interconnected, which is conducive to the smooth mold opening after the shell is injection molded.

[0017] A further feature of this invention is that the button has a limiting portion above both sides of the latch, and a slot is formed between the limiting portions on both sides for the locking engagement portion to be inserted, and the locking engagement portion has a lock hole corresponding to the latch.

[0018] By adopting the above technical solution, the setting of the limiting parts on both sides is conducive to the precise insertion of the locking mating part into the corresponding slot, thereby realizing the precise locking of the lock tongue and the lock hole of the locking mating part.

[0019] A further feature of this invention is that the cover body includes an upper cover shell, a lower cover shell, and a heat insulation layer located between the upper cover shell and the lower cover shell. The top of the outer shell is provided with two lugs, and the hinge shaft is connected between the two lugs. The lower cover shell is provided with a rotating connection part corresponding to the hinge shaft. A mounting cover is detachably fixedly connected to the rotating connection part. A rotating cavity is formed between the rotating connection part and the mounting cover to rotate with the hinge shaft. The torsion spring is located in the rotating cavity.

[0020] By adopting the above technical solution, the insulation layer can improve the cold insulation performance of the cover. The detachable mounting cover is used to cooperate with the rotating connection part to form a rotating cavity for mounting the hinge shaft, which is beneficial for the installation or replacement of the hinge shaft.

[0021] A further feature of this invention is that the mounting cover is provided with a buckle, the rotating connecting part is provided with a buckle groove corresponding to the buckle, the buckle engages with the corresponding buckle groove, and the mounting cover and the rotating connecting part are detachably fixedly connected by screws.

[0022] By adopting the above technical solution, the installation stability of the mounting cover on the rotating connection can be improved through the dual fixation of snap-fit ​​and screws.

[0023] A further feature of this invention is that: a positioning post protrudes from the end face of the lug facing the hinge shaft; anti-rotation grooves are formed on both sides of the positioning post; a positioning hole is formed on the hinge shaft corresponding to the positioning post; anti-rotation blocks are formed on both sides of the positioning hole on the hinge shaft; the positioning post is positioned and engaged with the positioning hole; and the anti-rotation blocks are engaged with the anti-rotation grooves to prevent rotation.

[0024] By adopting the above technical solution, the radial positioning of the positioning pin and positioning hole, and the circumferential locking of the anti-rotation block and anti-rotation groove, the hinge shaft is anti-rotated and installed on the lug sidewall, and is not prone to radial shaking, thus improving the anti-shaking performance when the cover is flipped.

[0025] In summary, this utility model has the following beneficial effects: The refrigerator body is rotatably connected to the cover via a hinge shaft. The refrigerator body has a button, and a torsion spring is installed outside the hinge shaft. An elastic element is also installed between the button and the refrigerator body. When the cover is closed on the refrigerator body, one end of the cover is locked to the latch via a locking mechanism. To open the cover, the operator simply presses the button, causing it to rotate around the hinge shaft. This releases the latch from the locking mechanism, unlocking the cover. Simultaneously, the reset mechanism compresses the elastic element. After the latch is unlocked, the torsion spring... The cover automatically flips to the open position relative to the main body of the refrigeration unit using its own elastic restoring force. When it is necessary to close the cover, simply flip the cover by hand and overcome the elastic restoring force of the torsion spring to flip the cover to the closed position relative to the main body of the refrigeration unit until the locking part of the cover and the locking tongue of the button lock each other. At this time, the elastic element pushes the reset part to reset and drives the locking tongue and the locking part to remain in the locked position. This utility model can automatically open the cover by simply pressing the button. It has the advantages of simple opening method and less likelihood of jamming between the cover and the main body of the refrigeration unit. Attached Figure Description

[0026] Figure 1 This is a view of the cover of this utility model in the open state relative to the main body of the refrigeration unit.

[0027] Figure 2 This is a cross-sectional view of the cover of this utility model in the closed state relative to the main body of the refrigeration unit.

[0028] Figure 3 This is a utility model Figure 2 A magnified view of a portion of region A in the middle.

[0029] Figure 4 This is a utility model Figure 2 A magnified view of a portion of region B in the middle.

[0030] Figure 5 This is an exploded view of this utility model.

[0031] Figure 6 This is a utility model Figure 5 A magnified view of a portion of region C.

[0032] Figure 7 This is another cross-sectional view of the cover of this utility model in the closed state relative to the main body of the refrigeration unit.

[0033] Figure 8 This is a utility model Figure 7 A magnified view of a portion of region D.

[0034] Figure 9 This is a view showing the button and bracket of this utility model separated from each other.

[0035] Figure 10 This is another cross-sectional view of the cover of this utility model in the closed state relative to the main body of the refrigeration unit.

[0036] Figure 11 This is a utility model Figure 10 A magnified view of a portion of region E in the middle.

[0037] In the diagram: 1. Refrigeration unit body; 11. Hinge shaft; 111. Positioning hole; 112. Anti-rotation block; 12. Torsion spring; 2. Outer shell; 21. Clearance hole; 211. Upper opening area; 212. Side opening area; 22. Anti-detachment part; 23. Inner ring boss part; 24. Annular groove; 25. Lug; 251. Positioning pin; 252. Anti-rotation groove; 3. Bracket; 31. Mounting cavity; 32. Pin hole; 33. Mounting sleeve; 4. Button; 40. Rotating shaft part; 4 1. Pressing part; 42. Reset part; 421. Gap; 43. Locking tongue part; 44. Limiting part; 441. Slot; 5. Cover body; 51. Upper cover shell; 52. Lower cover shell; 521. Locking mating part; 5211. Lock hole; 522. Outer ring sealing part; 523. Rotating connection part; 5231. Rotating cavity; 5232. Snap groove; 53. Insulation layer; 54. Mounting cover; 541. Snap buckle; 542. Screw; 6. Elastic element; 7. Power button. Detailed Implementation

[0038] The present invention will be further described below with reference to the accompanying drawings.

[0039] A button-operated opening structure for a food refrigeration machine, such as Figures 1-9 As shown, the device includes a refrigerator body 1 and a cover 5. One end of the cover 5 is hinged to the refrigerator body 1 via a hinge shaft 11, and the cover 5 has a closed state and an open state relative to the refrigerator body 1. A torsion spring 12 is sleeved on the hinge shaft 11, and the torsion spring 12 connects the cover 5 and the refrigerator body 1. The torsion spring 12 has an elastic tendency to drive the cover 5 to move towards the open state. A button 4 is provided at the end of the refrigerator body 1 away from the hinge shaft 11. The button 4 has a rotating shaft portion 40 on both sides, and the button 4 is rotatably connected to the refrigerator body 1 via the rotating shaft portion 40. The button 4 includes a pressing part 41, a reset part 42 located on one side of the rotating shaft portion 40, and a locking tongue part 4 on the other side. 3. The main body 1 of the refrigerator has a clearance hole 21 corresponding to the button 4. The pressing part 41 is at least partially exposed outside the clearance hole 21. The cover 5 has a locking engagement part 521 corresponding to the locking tongue part 43. An elastic element 6 is provided between the reset part 42 and the main body 1 of the refrigerator. In this embodiment, the elastic element 6 is a spring. The elastic element 6 pushes and engages with the reset part 42, and drives the locking tongue part 43 of the button 4 and the locking engagement part 521 of the cover 5 to lock each other. In addition, the front panel of the main body 1 of the refrigerator has an electronic button. The main body 1 of the refrigerator has a control board that is electrically connected to the electronic button. The operator can press the electronic button to start or stop the main body 1 of the refrigerator with one key.

[0040] like Figures 2-9 As shown, the main body 1 of the refrigerator includes a shell 2 and a bracket 3. The bracket 3 is fixedly installed on the inner wall of the shell 2. The bracket 3 has a mounting cavity 31 for mounting the button 4 and communicating with the clearance hole 21. The side wall of the mounting cavity 31 has a pin hole 32 corresponding to the rotating shaft part 40. The rotating shaft part 40 is rotatably connected to the corresponding pin hole 32. The bracket 3 is set separately to mount the button 4, so that the bracket 3 is an independent load-bearing component of the button 4, which is beneficial to improving the load-bearing strength of the button 4 and thus extending the service life of this utility model. The bracket 3 has a mounting sleeve for mounting the elastic element 6 in the mounting cavity 31. 33. One end of the elastic element 6 abuts against the bottom of the mounting sleeve 33, and the other end of the elastic element 6 abuts against the reset part 42. The mounting sleeve 33 can position the installation of the elastic element 6 to prevent the elastic element 6 from shifting during the pressing of the button 4. The outer shell 2 includes an anti-disengagement part 22 located at the edge of the opening of the clearance hole 21. The reset part 42 and the anti-disengagement part 22 are anti-disengaged, and a gap 421 is left between the reset part 42 and the mounting sleeve 33 for the reset part 42 to move. The addition of the anti-disengagement part 22 can improve the anti-disengagement and blocking effect of the button 4, thereby improving the overall operational stability of this utility model.

[0041] like Figures 1-10As shown, the edge of the cover 5 has a downwardly extending outer ring sealing portion 522, and the top of the outer shell 2 has an inner ring boss portion 23 corresponding to the outer ring sealing portion 522. The outer shell 2 forms an annular groove 24 on the outside of the inner ring boss portion 23. When the cover 5 is closed on the refrigerator body 1, the outer ring sealing portion 522 is locked and sealed with the inner ring boss portion 23 through the annular groove 24. This utility model can improve the sealing performance when the cover 5 is closed on the refrigerator body 1 through the nesting design of the outer ring sealing portion 522 and the inner ring boss portion 23, thereby improving the cold preservation effect. The clearance hole 21 includes an upper opening area 211 and a side opening area 212 that are interconnected. The upper opening area 211 penetrates the upper surface of the outer shell 2 and communicates with the annular groove 24. The side opening area 212 penetrates the side wall of the outer shell 2. The synergistic effect of region 211 and side opening region 212 can effectively reduce the interference between the locking part 521 and the refrigeration body 1 when the cover 5 moves to the closed state relative to the refrigeration body 1. Moreover, the upper opening region 211 and side opening region 212 are interconnected, which is conducive to the smooth mold opening after the outer shell 2 is injection molded. The button 4 has a limiting part 44 above both sides of the locking tongue 43. The two limiting parts 44 form a slot 441 for the locking part 521 to be inserted. The locking part 521 has a locking hole 5211 corresponding to the locking tongue 43. The setting of the two limiting parts 44 is conducive to the precise insertion of the locking part 521 into the corresponding slot 441, thereby realizing the precise locking of the locking tongue 43 and the locking hole 5211 of the locking part 521.

[0042] like Figures 1-11As shown, the cover 5 includes an upper cover shell 51, a lower cover shell 52, and an insulation layer 53 located between the upper cover shell 51 and the lower cover shell 52. The top of the outer shell 2 is provided with two lugs 25, and a hinge shaft 11 is connected between the two lugs 25. The lower cover shell 52 is provided with a rotating connection part 523 corresponding to the hinge shaft 11. A mounting cover 54 is detachably fixedly connected to the rotating connection part 523. A rotating cavity 5231 is formed between the rotating connection part 523 and the mounting cover 54, which is rotatably engaged with the hinge shaft 11. A torsion spring 12 is provided in the rotating cavity 5231. In addition, the hinge shaft 11 in this embodiment can be made of plastic or metal, and its outer wall has a certain coefficient of friction, so that a damping force can be generated between the outer wall of the hinge shaft 11 and the inner wall of the rotating cavity 5231 during rotation, thereby achieving the effect of slow opening of the cover 5 relative to the main body of the refrigerator 1. The insulation layer 53 can improve the cold retention performance of the cover 5. The detachable mounting cover 54 is used to cooperate with the rotating connection part 523 to form the rotating cavity 5231 for mounting the hinge shaft 11, which is beneficial for the installation or replacement of the hinge shaft; The cover 54 is provided with a buckle 541, and the rotating connecting part 523 is provided with a buckle groove 5232 corresponding to the buckle 541. The buckle 541 and the corresponding buckle groove 5232 are engaged and fitted together. The cover 54 and the rotating connecting part 523 are detachably fixed together by screws 542. The double fixation of the buckle and the screws 542 can improve the installation stability of the cover 54 on the rotating connecting part 523. The lug 25 has a positioning post 251 protruding from the end face facing the hinge shaft 11. The lug 25 has stop openings on both sides of the positioning post 251. The hinge shaft 11 has a positioning hole 111 corresponding to the positioning post 251 in the rotating groove 252. The hinge shaft 11 has anti-rotation blocks 112 on both sides of the positioning hole 111. The positioning post 251 is positioned and engaged with the positioning hole 111, and the anti-rotation block 112 is engaged with the anti-rotation groove 252. By using the radial positioning of the positioning post 251 and the positioning hole 111, and the circumferential locking of the anti-rotation block 112 and the anti-rotation groove 252, the hinge shaft 11 is mounted on the side wall of the lug 25 without rotation and is not prone to radial shaking, thus improving the anti-shaking performance when the cover 5 is flipped.

[0043] The basic working principle of this utility model is as follows: A cover 5 is rotatably connected to the main body 1 of the refrigerator via a hinge shaft 11. The main body 1 of the refrigerator is equipped with a button 4, and a torsion spring 12 is provided outside the hinge shaft 11. An elastic element 6 is provided between the button 4 and the main body 1 of the refrigerator. When the cover 5 is closed on the main body 1 of the refrigerator, one end of the cover 5 is locked and fixed to the locking tongue 43 through the locking engagement part 521. When it is necessary to open the cover 5, the operator only needs to press the pressing part 41 of the button 4, so that the button 4 rotates around the rotating shaft part 40 as the rotation center, so that the locking tongue 43 is relatively separated from the locking engagement part 521 to achieve unlocking. At the same time, the reset part 42 presses the elastic element 6 to compress it. When the locking tongue 43 is locked and locked, the locking tongue 43 is locked and fixed to the locking engagement part 521. After the mating part 521 is unlocked, the torsion spring 12 drives the cover 5 to automatically flip to the open state relative to the refrigerator body 1 by its own elastic restoring force. When it is necessary to close the cover 5 later, simply flip the cover 5 by hand and overcome the elastic restoring force of the torsion spring 12 to flip the cover 5 to the closed state relative to the refrigerator body 1 until the locking mating part 521 of the cover 5 and the locking tongue part 43 of the button 4 lock each other. At this time, the elastic element 6 pushes the reset part 42 to reset and drives the locking tongue part 43 to remain in the locked position with the locking mating part 521. This utility model can realize the automatic opening of the cover 5 by simply pressing the button 4. It has the effect of simple opening of the cover and the cover and the refrigerator body are not easy to jam.

[0044] The above description is only a preferred embodiment of the present utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A button-operated opening structure for a food refrigeration machine, comprising a refrigeration machine body (1) and a cover (5), characterized in that: One end of the cover (5) is hinged to the refrigerator body (1) via a hinge shaft (11), and the cover (5) has a closed state and an open state relative to the refrigerator body (1). A torsion spring (12) is sleeved on the hinge shaft (11). The torsion spring (12) is connected between the cover (5) and the refrigerator body (1). The torsion spring (12) has an elastic tendency to drive the cover (5) to move toward the open state. A button (4) is provided at one end of the refrigerator body (1) away from the hinge shaft (11). The button (4) has a rotating shaft (40) on both sides. The button (4) is rotatably connected to the refrigerator body (1) through the rotating shaft (40). The button (4) includes a pressing part (41), a reset part (42) located on one side of the rotating shaft (40), and a locking tongue part (43) on the other side. The refrigerator body (1) has a corresponding opening for the button (4). The push part (41) is at least partially exposed outside the clearance hole (21). The cover (5) is provided with a locking engagement part (521) corresponding to the locking tongue part (43). An elastic element (6) is provided between the reset part (42) and the refrigerator body (1). The elastic element (6) pushes and engages with the reset part (42), and drives the locking tongue part (43) of the button (4) and the locking engagement part (521) of the cover (5) to lock each other.

2. The button-operated structure of a food refrigeration machine according to claim 1, characterized in that: The main body (1) of the refrigerator includes a shell (2) and a bracket (3). The bracket (3) is fixedly installed on the inner wall of the shell (2). The bracket (3) is provided with a mounting cavity (31) for installing a button (4) and communicating with the clearance hole (21). The side wall of the mounting cavity (31) is provided with a pin hole (32) corresponding to the rotating shaft (40). The rotating shaft (40) is rotatably connected to the corresponding pin hole (32).

3. The button-operated structure of a food refrigeration machine according to claim 2, characterized in that: The bracket (3) has a mounting sleeve (33) for mounting the elastic member (6) in the mounting cavity (31). One end of the elastic member (6) abuts against the bottom of the mounting sleeve (33), and the other end of the elastic member (6) abuts against the reset part (42).

4. The button-operated structure of a food refrigeration machine according to claim 3, characterized in that: The outer casing (2) includes an anti-detachment part (22) located at the edge of the opening of the clearance hole (21), the reset part (42) is anti-detached from the anti-detachment part (22), and a gap (421) is left between the reset part (42) and the mounting sleeve (33) for the reset part (42) to move.

5. The button-operated structure of a food refrigeration machine according to claim 2, characterized in that: The edge of the cover (5) has a downwardly extending outer ring sealing part (522), and the top of the outer shell (2) is provided with an inner ring boss part (23) corresponding to the outer ring sealing part (522). The outer shell (2) forms an annular groove (24) on the outside of the inner ring boss part (23). When the cover (5) is closed on the refrigerator body (1), the outer ring sealing part (522) is locked and sealed with the inner ring boss part (23) through the annular groove (24).

6. The button-operated structure of a food refrigeration machine according to claim 5, characterized in that: The clearance hole (21) includes an upper opening area (211) and a side opening area (212) that are interconnected. The upper opening area (211) penetrates the upper surface of the outer shell (2) and communicates with the annular channel (24). The side opening area (212) penetrates the side wall of the outer shell (2).

7. The button-operated structure of a food refrigeration machine according to claim 6, characterized in that: The button (4) has a limiting part (44) above both sides of the latch (43), and a slot (441) for the locking engagement part (521) to be inserted is formed between the two limiting parts (44), and the locking engagement part (521) has a lock hole (5211) corresponding to the latch (43).

8. The button-operated structure of a food refrigeration machine according to claim 2, characterized in that: The cover (5) includes an upper cover shell (51), a lower cover shell (52), and a heat insulation layer (53) located between the upper cover shell (51) and the lower cover shell (52). The top of the outer shell (2) is provided with two lugs (25). The hinge shaft (11) is connected between the two lugs (25). The lower cover shell (52) is provided with a rotating connection part (523) corresponding to the hinge shaft (11). The rotating connection part (523) is detachably fixedly connected with an installation cover (54). A rotating cavity (5231) is formed between the rotating connection part (523) and the installation cover (54) to rotate with the hinge shaft (11). The torsion spring (12) is located in the rotating cavity (5231).

9. The button-operated structure of a food refrigeration machine according to claim 8, characterized in that: The mounting cover (54) is provided with a buckle (541), and the rotating connecting part (523) is provided with a buckle groove (5232) corresponding to the buckle (541). The buckle (541) and the corresponding buckle groove (5232) are engaged and fitted together, and the mounting cover (54) and the rotating connecting part (523) are detachably fixedly connected by screws (542).

10. The button-operated structure of a food refrigeration machine according to claim 8, characterized in that: The lug (25) has a positioning post (251) protruding from its end face toward the hinge shaft (11). The lug (25) has anti-rotation grooves (252) on both sides of the positioning post (251). The hinge shaft (11) has a positioning hole (111) corresponding to the positioning post (251). The hinge shaft (11) has anti-rotation blocks (112) on both sides of the positioning hole (111). The positioning post (251) is positioned and engaged with the positioning hole (111), and the anti-rotation block (112) is engaged with the anti-rotation groove (252) to prevent rotation.

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