Door switch device for a refrigeration appliance and refrigeration appliance

Abstract

The application discloses a door switch device for a refrigeration equipment, which comprises a switch box provided with a through hole, a leveling mechanism and a switch assembly arranged in the switch box; the leveling mechanism comprises a leveling knob penetrating through the through hole on the switch box, a knob base movably connected with the leveling knob to adjust the length of the leveling knob extending out of the switch box, and an extension piece movably connected with the knob base; the leveling mechanism moves towards or away from the switch box through the extension and retraction of the extension piece; the switch assembly comprises movable contact pieces and fixed contact pieces which can be butted against each other; the leveling mechanism further comprises a guide block which extrudes the movable contact pieces to separate the movable contact pieces from the fixed contact pieces when moving towards the switch box. The door switch device for controlling the indoor lamp has the door leveling function, the component functionality is improved, and the cost is effectively reduced.

Description

Technical Field

[0001] This invention relates to the field of refrigeration equipment technology, and in particular to a door switch device for refrigeration equipment and refrigeration equipment. Background Technology

[0002] To facilitate users' viewing and retrieval of items inside refrigeration equipment, door switch devices are usually installed on the equipment. These devices control the interior lights by sensing the opening and closing of the door. The common solution is to install door switch protrusions on the upper and lower front beams or hinge boxes of the refrigeration equipment. When the door is opened, the protrusion pops up, the internal wiring is completed, and the interior lights are turned on. When the door is closed, the protrusion is pushed into the switch as the door closes, the internal wiring is broken, and the interior lights are turned off.

[0003] To address the issue of uneven refrigerator doors, the current solution involves installing a leveling knob with a spiral groove on the door. Users can screw it into the groove and adjust the door's closing height by changing the height of the knob protruding from the door. However, the current leveling knob can be easily removed by the user, lacking an anti-fall-off design, making it prone to automatic detachment or accidental removal.

[0004] Furthermore, the door switch and the leveling knob each have relatively simple functions. In order to achieve these two functions at the same time, the door switch and the leveling knob need to be installed at similar positions on the refrigeration equipment, which results in cost waste and affects the aesthetics. Summary of the Invention

[0005] The purpose of this invention is to provide a door switch device for refrigeration equipment and refrigeration equipment, so that the door switch device for controlling indoor lights also has a door leveling function, thereby improving the functionality of the components and effectively reducing costs.

[0006] To achieve the above objectives, the present invention provides a door switch device for refrigeration equipment, comprising a switch box with a through hole, and a leveling mechanism and a switch assembly disposed within the switch box;

[0007] The leveling mechanism includes a leveling knob passing through a through hole in the switch box, a knob base movably connected to the leveling knob to adjust the length of the leveling knob extending out of the switch box, and a telescopic component connected to the knob base; the leveling mechanism moves inward or outward of the switch box through the telescopic movement of the telescopic component.

[0008] The switch assembly includes a movable contact and a fixed contact that can be mated to each other, and the leveling mechanism also includes a guide block that presses the movable contact apart from the fixed contact when moving toward the switch box.

[0009] As one embodiment of the invention, the leveling knob has a slot with an opening facing the inside of the switch box, and the knob base has a longitudinally extending insertion part, which is inserted into the slot. The leveling knob can be rotated to adjust the depth of the insertion part in the slot.

[0010] As one embodiment of the invention, the leveling knob includes a main post passing through the through hole and a pressure edge connected to the outer side of the end of the main post and restricting the axial movement of the main post along the through hole.

[0011] As one embodiment of the invention, the knob base further includes a base connected to one end of the plug-in portion, the base having a cavity with an opening facing away from the plug-in portion, the switch box having a support column coaxial with the knob base and the leveling knob, one end of the telescopic member being sleeved on the support column, and the other end being inserted into the cavity.

[0012] In one embodiment of the invention, the switch box is provided with a first fixing part and a second fixing part for fixing the fixed contact and the movable contact. The fixed contact is provided with a fixed contact point, and the movable contact is provided with a movable contact point that is connected to the fixed contact point.

[0013] In one embodiment of the invention, the movable contact includes a movable side and a fixed side connected to each other, the second fixing part forms a fixing groove, the fixed side is engaged in the fixing groove, and the movable contact is disposed on the movable side.

[0014] In one embodiment of the invention, the movable edge includes a contact edge for engaging with the guide block and an extension edge for fixing the movable contact. The guide block, by squeezing the contact edge, drives the extension edge to move, causing the movable contact on the extension edge to separate from the fixed contact.

[0015] In one embodiment of the invention, the fixed contact includes a first side arranged parallel to the extended side and a second side perpendicularly connected to the first side, the fixed contact point is disposed on the first side, and the first fixing part is provided with a first slot and a second slot for respectively engaging the first side and the second side.

[0016] In one embodiment of the invention, the pressing edge is annularly connected to the outer side of the end of the main column, and the diameter of the outer edge of the pressing edge is larger than the diameter of the through hole.

[0017] To achieve the above objectives, the present invention also provides a refrigeration device, including a housing, a door for closing the housing, and a door opening and closing device as described above.

[0018] In one embodiment of the invention, the door switch device is disposed on the front beam of the housing or on the door.

[0019] The beneficial effects of this invention are as follows: The door switch device for refrigeration equipment provided by this invention, through a leveling mechanism, can move inward or outward towards the switch box in conjunction with the opening and closing of the door, driving a guide block to cooperate with the switch assembly to control the indoor light, achieving automatic control of turning on the light when the door is opened and turning off the light when the door is closed. Simultaneously, through the movable connection between the leveling knob and the knob base, the leveling mechanism can also adjust the distance between the door and the closed housing, thereby achieving door leveling. Therefore, the door switch device controlling the indoor light can simultaneously possess a door leveling function, greatly improving the functionality of the components, helping to save costs and improve aesthetics. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of a refrigeration device provided according to an embodiment of the present invention;

[0021] Figure 2 yes Figure 1 A three-dimensional structural diagram of the switch box for the central door switch device;

[0022] Figure 3 yes Figure 1 A cross-sectional structural diagram of the middle door switch device;

[0023] Figure 4 yes Figure 3 Exploded view of the middle door switch device;

[0024] Figure 5 yes Figure 3 A three-dimensional structural diagram of the knob base of the middle door switch device;

[0025] Figure 6 This is a cross-sectional view of the door opening and closing device when the door of the refrigeration equipment is closed.

[0026] Figure 7 This is a cross-sectional view of the door opening and closing device with the door of the refrigeration equipment open.

[0027] Figure 8 Yes Figure 7 A cross-sectional view of the middle door switch device after adjusting the length of the leveling knob extending outside the switch box;

[0028] Figure 9 This is a schematic diagram of a door opening and closing device provided according to another specific embodiment of the present invention being disposed on the door body; Detailed Implementation

[0029] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Please refer to the following description. Figures 1 to 9 The image shows one embodiment of the present invention.

[0030] It should be understood that, unless otherwise expressly specified and limited, in this application, the terms "upper," "lower," "front," "rear," "left," "right," etc., indicate the orientation or positional relationship based on the orientation shown in the illustration, and are only for the convenience of description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed or operated in a specific orientation.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means two or more, at least two.

[0032] In this invention, unless otherwise explicitly specified and limited, the terms “set up,” “connected,” “linked,” “fixed,” etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part.

[0033] This invention provides a refrigeration device. Figures 1 to 9 An embodiment of the present invention is shown.

[0034] In this embodiment, the refrigeration device 100 is a refrigerator. It should be noted that although the present invention is described using a refrigerator as an example, the present invention is not limited to this and may also be other devices that can provide refrigeration function.

[0035] like Figure 1 As shown, the refrigeration equipment 100 includes a housing 10, a door 20 for closing the housing 10, and a door opening / closing device 1. The housing 10 has an approximately cuboid shape, with an opening facing the user, and an interior storage compartment with storage space. The door 20 is located outside the storage compartment to close the opening of the housing 10.

[0036] The door switch device 1 is installed on the front beam of the housing 10. The door switch device 1 cooperates with the door 20 and changes its structural state by means of the opening or closing process of the door. For example, when the door 20 is closed, the door switch device 1 is squeezed by the door 20, which disconnects the internal circuit and controls the indoor light to turn off. When the door 20 is open, the door switch device 1 is separated from the door 20, the internal circuit is restored to conduction, and controls the indoor light to turn on. This realizes the automatic control of the indoor light to turn on or off by the user's action of opening and closing the door. The structural state of the door switch device will be described in detail below.

[0037] In this embodiment, the refrigerator is a cross-door refrigerator with four doors spaced apart. There are also four door switches corresponding to the four doors, so that opening each door 20 can control the indoor light to be turned on. The switches are respectively located at symmetrical positions on the upper and lower beams of the cabinet 10 to ensure that each door can be adjusted to remain level.

[0038] In some other embodiments, the door switch device 1 may also be disposed on the front beam of the housing 10 corresponding to the door 20 of the actual refrigeration equipment 100.

[0039] Reference Figure 2 and Figure 3 The door switch device 1 includes a switch box 2 with a through hole 21, and a leveling mechanism 3 and a switch assembly 4 disposed in the switch box 2;

[0040] The door switch device 1 integrates the leveling mechanism 3 and the switch assembly 4 into a switch box 2, achieving a high degree of integration. During installation, the assembled switch box 2 is simply fixed to the corresponding position on the housing 10, thus completing the installation of the door switch device 1. This improves the convenience of manufacturing and installation and is also more aesthetically pleasing.

[0041] Reference Figure 2 The switch box 2 includes a bottom box 22 with a receiving cavity and a cover plate 23 that covers the bottom box 22 and seals the receiving cavity. After the leveling mechanism 3 and the switch assembly 4 are installed and fixed in the bottom box 22, the bottom box 22 is closed by the cover plate 23 to complete the assembly step.

[0042] The leveling mechanism 3 and the switch assembly 4 are located inside the switch box 2, which can improve the working stability of the internal structure of the door switch device 1 and prevent related components from automatically falling off the refrigeration equipment 100 or being accidentally disassembled by the user.

[0043] Reference Figure 3 The leveling mechanism 3 includes a leveling knob 31 that passes through a through hole 21 on the switch box 2, a knob base 32 that is movably connected to the leveling knob 31 to adjust the length of the leveling knob 31 extending out of the switch box 2, and a telescopic member 33 that is connected to the knob base 32.

[0044] The leveling knob 31, knob base 32, and telescopic member 33 are connected in sequence. The through hole 21 is located on the top of the switch box 2. The leveling knob 31 protrudes outward from the switch box 2 through the through hole 21. That is, part of the leveling knob 31 is located inside the switch box 2, and the other part extends out of the switch box 2. The knob base 32 and the telescopic member 33 are both built into the switch box 2.

[0045] The leveling knob 31 is movably connected to the knob base 32. By controlling the relative connection position between the leveling knob 31 and the knob base 32, the length of the leveling knob 31 extending out of the switch box 2 can be adjusted. When the door 20 is closed, the leveling knob 31 is partially exposed on the outer surface of the box 10, and the door 20 will directly contact the leveling knob 31. By adjusting the length of the leveling knob 31 extending out of the switch box 2, the closing distance between the door 20 and the box 10 can be adjusted accordingly, so that the door 20 remains flush in the vertical plane.

[0046] In addition, the telescopic member 33 is connected to the knob base 32. The telescopic member 33 is elastic and will change its extension state under the action of mechanical force. When the telescopic member 33 is subjected to pressure, it will contract and be in a tightened state. When the pressure is released, the telescopic member 33 returns to its original position under the action of the reset force. The leveling mechanism 3 moves as a whole toward the inside or outside of the switch box 2 through the extension and retraction movement of the telescopic member 33. In this embodiment, the telescopic member 33 is preferably a spring.

[0047] Reference Figure 6 When the door 20 is closed, the door switch device 1 contacts the door 20, and the leveling knob 31 is directly subjected to the squeezing action of the door 20 when it is closed, driving the telescopic component 33 to retract inward. The leveling mechanism 3 moves as a whole toward the switch box 2; refer to Figure 7 When the door 20 is opened, the door switch device 1 separates from the door 20, the pressure on the telescopic member 33 is released, and it begins to return to its original extended state, driving the overall leveling mechanism 3 to move outward from the switch box 2.

[0048] The switch assembly 4 includes a movable contact 41 and a fixed contact 42 that can be mated together. The leveling mechanism 3 also includes a guide block 34 that squeezes the movable contact 41 to separate it from the fixed contact 42 when it moves toward the switch box 2.

[0049] The guide block 34 moves toward the switch box 2 when the door 20 is closed, and moves toward the switch box 2 when the door 20 is opened, along with the overall leveling mechanism 3.

[0050] When the door 20 is closed, the guide block 34 moves into the switch box 2, contacts the movable contact 41, and further squeezes the movable contact 41 during the movement, causing it to shift and separate from the originally mated fixed contact 42, thus disconnecting the internal circuit and controlling the indoor light to turn off. When the door 20 is opened, the guide block 34 moves out of the switch box 2, disengaging from the movable contact 41. When the movable contact 41 is not subjected to external force, it mats with the fixed contact 42, thus connecting the internal circuit and controlling the indoor light to turn on.

[0051] By incorporating the telescopic component 33, the leveling mechanism 3 can move inward or outward towards the switch box 2 in conjunction with the opening and closing of the door 20, driving the guide block 34 to cooperate with the switch assembly 4 to control the indoor light, achieving automatic control of turning on the light when the door is opened and turning off the light when the door is closed. Simultaneously, through the movable connection between the leveling knob 31 and the knob base 32, the leveling mechanism 3 can also adjust the distance between the closed door 20 and the box 10, thereby achieving the leveling function of the door 20. Therefore, the door switch device 1 controlling the indoor light can simultaneously possess the door 20 leveling function, greatly improving the functionality of the components. This eliminates the need to simultaneously install a door switch device 1 and a leveling device, each with relatively simple functions, at approximately the same location on the refrigeration equipment 100, helping to save costs and improve aesthetics.

[0052] Specifically, such as Figure 4 As shown, the leveling knob 31 has a slot 311 with an opening facing the inside of the switch box 2. The slot 311 has a certain depth and extends longitudinally inside the leveling knob 31. The knob base 32 is correspondingly provided with a longitudinally extending insertion part 321. The insertion part 321 is inserted into the slot 311. The leveling knob 31 can be rotated to adjust the depth of the insertion part 321 in the slot 311.

[0053] In this embodiment, the sidewall of the slot 311 has an internal thread, and the insertion part 321 is a threaded post. The threaded post engages tightly with the internal thread of the slot 311, allowing the insertion part 321 to be screwed into the slot 311. By rotating the leveling knob 31 from the outside, the depth of the insertion part 321 into the slot 311 can be adjusted, causing a change in the overall length of the leveling knob 31 and the knob base 32. Furthermore, the leveling knob 31 is exposed on the outside of the switch box 2, allowing for rotational adjustment by a user.

[0054] The leveling knob 31 is specifically composed of a main body post 312 passing through the through hole 21 and a pressing edge 313 connected to the outer side of the end of the main body post 312 and restricting the axial movement of the main body post 312 along the through hole 21. The slot 311 is provided inside the main body post 312. In this embodiment, the main body post 312 is cylindrical, and the through hole 21 is circular to match the leveling knob 31.

[0055] The pressing edge 313 is annularly connected to the outer side of the end of the main column 312, and the diameter of the outer edge of the pressing edge 313 is larger than the diameter of the through hole 21, such as... Figure 7As shown, when the door 20 is opened, the leveling knob 31 is subjected to the rebound deformation force of the telescopic member 33 and moves outward along the through hole 21 until the pressing edge 313 abuts against the top of the switch box 2. Because its diameter is larger than the diameter of the through hole 21, it cannot pass through the through hole 21, and the leveling knob 31 will stop moving. The pressing edge 313 can restrict the leveling knob 31 from moving further outward, thereby preventing the leveling knob 31 from being unscrewed by the user or falling off for other reasons, increasing the protective capability of the component.

[0056] like Figure 5 As shown, the knob base 32 also includes a base 322 connected to one end of the plug-in portion 321. The base 322 has a cavity 323 with an opening facing away from the plug-in portion 321. The cavity 323 is also cylindrical and is coaxially arranged with the plug-in portion 321.

[0057] The switch box 2 is equipped with a support column 24 coaxial with the knob base 32 and the leveling knob 31. The support column 24 is fixed to the bottom of the switch box 2. One end of the telescopic member 33 is sleeved on the support column 24, and the other end is inserted into the cavity 323. When the telescopic member 33 expands, because the bottom is fixed, the telescopic member 33 will provide an upward deformation force to the connected knob base 32, driving the knob base 32 and the leveling knob 31 to move together to the top of the switch box 2.

[0058] The switch assembly 4 is disposed on one side of the leveling mechanism 3. In this embodiment, the switch assembly 4 and the leveling mechanism 3 are arranged at intervals on the left and right sides in the switch box 2 to make full use of the inner space of the switch box 2, reduce the actual volume of the switch box 2, and control the opening or closing of the switch assembly 4 by the guide block 34 through the movement of the leveling mechanism 3 in or out of the switch box 2.

[0059] The guide block 34 is disposed on the knob base 32 and connected to the base 322 on the side near the switch assembly 4. In this embodiment, the switch assembly 4 is disposed on the right side of the leveling mechanism 3, and the guide block 34 protrudes from the base 322 to the right.

[0060] Of course, the orientation of the switch assembly 4 and the leveling mechanism 3 is not limited. Alternatively, the leveling mechanism 3 can be located on the right side of the switch box 2, and the switch assembly 4 can be located on the left side.

[0061] In addition, such as Figure 3 and Figure 4As shown, the fixed contact 42 and the movable contact 41 are arranged vertically at intervals. The switch box 2 is provided with a first fixing part 25 and a second fixing part 26 for fixing the fixed contact 42 and the movable contact 41. The first fixing part 25 is located at the top of the switch box 2 to fix the fixed contact 42 to the upper part of the switch box 2, and the second fixing part 26 is located at the bottom of the switch box 2 to fix the movable contact 41 to the lower part of the switch box 2. Thus, the fixed contact 42 and the movable contact 41 can engage or disengage within a relatively ample space, unaffected by interference from other components.

[0062] The fixed contact plate 42 is provided with a fixed contact point 421, and the movable contact plate 41 is provided with a movable contact point 411 that is connected to the fixed contact point 421.

[0063] The fixed contact 42 and the movable contact 41 are respectively provided with a fixed contact 421 and a moving contact 411. When the door is open, the movable contact 41 is not under force, and the fixed contact 421 and the moving contact 411 are connected, the circuit is completed, and the indoor light is turned on. When the door is closed, the movable contact 41 is squeezed and displaced, the moving contact 411 separates from the fixed contact 421, and the circuit is broken. By setting the fixed contact 421 and the moving contact 411, the opening or closing control of the switch assembly 4 is made more sensitive, and the state switching is smoother.

[0064] Reference Figure 4 , Figure 6 and Figure 7 The movable contact 41 includes a movable side 412 and a fixed side 413 connected to each other. The second fixing part 26 forms a fixing groove 261. The fixed side 413 is engaged in the fixing groove 261. The movable contact 411 is provided on the movable side 412.

[0065] In this embodiment, the movable edge 412 and the fixed edge 413 are stacked. The movable edge 412 is located above the fixed edge 413 and docks with the fixed contact piece 42, while the fixed edge 413 is located below and engages with the bottom fixing groove 261.

[0066] The fixing groove 261 is composed of a base block 262 located at the bottom corner of the switch box 2 and a first retaining rib 263 and a second retaining rib 264 disposed on the side wall of the switch box 2. The base block 262 has a right-angled trapezoidal cross-section. The first retaining rib 263 extends horizontally and cooperates with the upper end surface of the base block 262 to form a first gap. The second retaining rib 264 is inclined and parallel to the inclined surface of the base block 262. The second retaining rib 264 cooperates with the inclined surface of the base block 262 to form a second gap.

[0067] The fixed edge 413 includes a first snap-fit ​​edge 4131 and a second snap-fit ​​edge 4132 that are bent and connected to each other, and are respectively inserted into the first gap and the second gap so that the fixed edge 413 is held in place and remains stable.

[0068] The movable edge 412 includes a contact edge 4121 for engaging with the guide block 34 and an extension edge 4122 for fixing the movable contact 411. One end of the contact edge 4121 is connected to the second snap-fit ​​edge 4132. The fixed edge 413 provides a lower fulcrum for the contact edge 4121. When the guide block 34 presses the contact edge 4121 downward, this end remains fixed.

[0069] The other end of the contact edge 4121 is connected to the extension edge 4122, which extends horizontally away from the guide block 34 and engages with the fixed contact piece 42. When the guide block 34 presses the contact edge 4121 downward, the extension edge 4122 moves downward and to the right along with the contact edge 4121, causing the moving contact 411 on the extension edge 4122 to separate from the fixed contact 421.

[0070] The contact edge 4121 is inclinedly disposed below the guide block 34, so that the guide block 34 can dock with the contact edge 4121 and apply a squeezing force to it when it moves downward.

[0071] The fixed contact 42 includes a first side 422 that is parallel to the extended side 4122 and a second side 423 that is perpendicular to the first side 422. The fixed contact 421 is provided on the first side 422. The first fixing part 25 is provided with a first slot 251 and a second slot 252 for respectively engaging the first side 422 and the second side 423.

[0072] The first slot 251 is formed by two horizontally extending transverse retaining ribs 253 spaced apart, with the first side 422 engaging between the two transverse retaining ribs 253. The second slot 252 is formed by two vertically extending longitudinal retaining ribs 254 spaced apart, with the second side 423 engaging between the two longitudinal retaining ribs 254. By setting the transverse retaining ribs 253 and longitudinal retaining ribs 254, the fixed contact piece 42 is completely fixed, ensuring that the fixed contact piece 42 remains stable and immobile within the switch box 2.

[0073] In this embodiment, both the fixed contact 42 and the movable contact 41 are metal sheets. When the door 20 is opened, the leveling knob 31 is supported to the top by the deformation force of the spring, and the guide block 34 rises back to above the contact edge 4121. Due to the metal properties, the movable contact will release the tensile potential energy to restore its original shape and rebound, and the movable contact 411 will re-contact the fixed contact 421.

[0074] The assembly process of the door opening and closing device 1 for the refrigeration equipment 100 described above will be explained in detail below:

[0075] Reference Figure 3 and Figure 4 First, open the bottom box 22 of the switch box 2, and attach one end of the telescopic member 33 to the support column 24 fixed at the bottom of the switch box 2. Insert its upper end into the cavity 323 inside the knob base 32. Then, place the leveling knob 31 above the knob base 32 and rotate the leveling knob 31 so that the threaded part of the insertion part 321 enters the slot 311 of the leveling knob 31 to form a whole.

[0076] Next, the fixed contact 42 and movable contact 41 of the switch assembly 4 are connected to the first fixing part 25 and the second fixing part 26 inside the switch box 2. The fixed edge 413 of the movable contact 41 is engaged in the fixing groove 261, and the first edge 422 and the second edge 423 of the fixed contact 42 are engaged in the first slot 251 and the second slot 252, respectively. After being placed, the fixed contact 42 and the movable contact 41 are in contact. Finally, the switch box 2 is closed, so that the leveling knob 31 passes through the through hole 21 at the top of the switch box 2, and the assembly is completed.

[0077] The following is a detailed explanation of the leveling process of the door switch device 1 used in the refrigeration equipment 100: (Refer to...) Figure 6 In the current state, the insertion part 321 of the knob base 32 is fully inserted into the slot 311 of the leveling knob 31. When the door 20 is closed, the length of the leveling knob 31 extending out of the switch box 2 is Δ1. If the door is not closed properly at this time, the user can open the door to adjust it. The leveling knob 31 is driven by the deformation force of the telescopic member 33 to move out of the switch box 2. The main column part of the leveling knob 31 will pop out to the outside of the switch box 2 to facilitate the user to perform rotation adjustment.

[0078] By rotating the leveling knob 31 from the outside, the user adjusts the depth of the insertion part 321 into the slot 311. This changes the overall length of the leveling knob 31 and the knob base 32. When the door is closed again, refer to... Figure 8 The length of the leveling knob 31 extending out of the switch box 2 is changed to Δ2, that is, the closing distance between the door 20 and the box 10 is adjusted. The door is judged by visual inspection to see if it is level. If it is not level, the above steps can be repeated to finally achieve door leveling.

[0079] Alternatively, the door switch device 1 may be installed on the front beam of the housing 10, or the door switch device 1 may be installed on the door 20.

[0080] As another embodiment of the invention, such as Figure 9 As shown, the door switch can also be installed on the door body 20. When the door body 20 is opened or closed, the door switch device 1 on it can cooperate with the front beam of the housing 10. When the door body 20 is closed, the door switch device 1 abuts against the front beam of the housing 10. The pressure from the front beam of the housing 10 causes the door switch device 1 to disconnect the internal circuitry, turning off the indoor lights. When the door body 20 is open, the door switch device 1 separates from the housing 10, restoring the internal circuitry and turning on the indoor lights.

[0081] In this embodiment, the refrigerator is a cross-door refrigerator with four doors spaced apart. There are also four door switches, which are respectively installed on the four doors. When the doors are closed, the door switches abut against the front beam of the refrigerator body 10.

[0082] Of course, in some other embodiments, the door switch device 1 can also be configured according to the door body 20 of the actual refrigeration equipment 100.

[0083] In summary, the refrigeration equipment provided by this invention, through a leveling mechanism, can move inward or outward in coordination with the opening and closing of the door, driving the guide block to control the indoor light in conjunction with the switch assembly, achieving automatic control of the light turning on when the door is opened and turning off when the door is closed. Simultaneously, through the movable connection between the leveling knob and the knob base, the leveling mechanism can also adjust the distance between the door and the closed housing, thereby achieving door leveling. Therefore, the door switch device controlling the indoor light can simultaneously possess door leveling functionality, greatly improving component functionality, helping to save costs, and enhancing aesthetics.

[0084] In the embodiments provided by the present invention, it should be understood that the above-described implementation of the structure is merely illustrative. For example, the division of the modules is merely a logical functional division. In actual implementation, there may be other division methods. For example, multiple modules or components may be combined or integrated into another device, or some features may be ignored or not executed.

[0085] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A door opening and closing device for refrigeration equipment, characterized in that, It includes a switch box with a through hole, and a leveling mechanism and a switch assembly disposed within the switch box; The leveling mechanism includes a leveling knob passing through a through hole in the switch box, a knob base movably connected to the leveling knob to adjust the length of the leveling knob extending out of the switch box, and a telescopic component connected to the knob base; the leveling mechanism moves inward or outward of the switch box through the telescopic movement of the telescopic component. The switch assembly includes a movable contact and a fixed contact that can be mated to each other, and the leveling mechanism also includes a guide block that presses the movable contact apart from the fixed contact when moving toward the switch box.

2. The door opening and closing device for refrigeration equipment according to claim 1, characterized in that, The leveling knob has a slot with an opening facing the inside of the switch box. The knob base has a longitudinally extending insertion part, which is inserted into the slot. The leveling knob can be rotated to adjust the depth of the insertion part in the slot.

3. The door opening and closing device for refrigeration equipment according to claim 2, characterized in that, The leveling knob includes a main post passing through the through hole and a pressure edge connected to the outside of the end of the main post and restricting the axial movement of the main post along the through hole.

4. The door opening and closing device for refrigeration equipment according to claim 2, characterized in that, The knob base also includes a base connected to one end of the plug-in portion. The base has a cavity with an opening facing away from the plug-in portion. The switch box has a support column coaxial with the knob base and the leveling knob. One end of the telescopic member is sleeved on the support column, and the other end is inserted into the cavity.

5. The door opening and closing device for refrigeration equipment according to claim 1, characterized in that, The switch box is provided with a first fixing part and a second fixing part for fixing the fixed contact and the movable contact. The fixed contact is provided with a fixed contact point, and the movable contact is provided with a movable contact point that is connected to the fixed contact point.

6. The door opening and closing device for refrigeration equipment according to claim 5, characterized in that, The movable contact includes a movable side and a fixed side that are connected to each other. The second fixed part has a fixed groove. The fixed side is engaged in the fixed groove. The movable contact is located on the movable side.

7. The door opening and closing device for refrigeration equipment according to claim 6, characterized in that, The movable edge includes a contact edge for engaging with the guide block and an extension edge for fixing the movable contact. The guide block, by squeezing the contact edge, drives the extension edge to move, causing the movable contact on the extension edge to separate from the fixed contact.

8. The door opening and closing device for refrigeration equipment according to claim 5, characterized in that, The fixed contact includes a first side parallel to the extended side and a second side perpendicularly connected to the first side. The fixed contact point is located on the first side. The first fixing part is provided with a first slot and a second slot for engaging the first side and the second side, respectively.

9. The door opening and closing device for refrigeration equipment according to claim 3, characterized in that, The pressure edge is a ring that surrounds and connects to the outside of the end of the main column, and the diameter of the outer edge of the pressure edge is larger than the diameter of the through hole.

10. A refrigeration device, comprising a housing and a door for closing the housing, characterized in that, It also has a door switch device as described in any one of claims 1-9.

11. The refrigeration equipment according to claim 10, characterized in that, The door switch device is located on the front beam of the enclosure or on the door.

Images