Refrigerator

Abstract

The embodiment of the utility model belongs to the technical field of household appliances, and particularly provides a refrigerator. The refrigerator comprises a refrigerator body, a low-pressure storage structure, an air extractor and a trigger switch, the low-pressure storage structure is installed in a storage chamber formed by the refrigerator body, a low-pressure storage chamber is formed by the low-pressure storage structure, and the air extractor is used for extracting air in the low-pressure storage chamber; the trigger switch is used for triggering the air extractor to start, and automatic control over air extraction of the low-pressure storage chamber is achieved. A mounting seat is arranged on the low-pressure storage structure and is used for mounting a trigger switch; an accommodating groove and a vent hole for communicating the accommodating groove with the low-pressure storage chamber are formed in the mounting seat; the trigger switch comprises a first sealing piece and a second sealing piece, the first sealing piece seals the end of the mounting base, the second sealing piece is used for sealing the vent hole, the trigger switch and the low-pressure storage structure are subjected to double sealing, the sealing performance of the trigger switch to the low-pressure storage chamber is guaranteed, air leakage of the low-pressure storage chamber is avoided, and the storage quality of the low-pressure storage chamber is improved.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of household appliances, and in particular to a refrigerator. Background Art

[0002] As a refrigeration device, a refrigerator can keep the food or other items placed inside it at a low temperature. As the requirements for the storage quality of refrigerators increase, vacuum chambers are set up on refrigerators, and the vacuum chambers are evacuated by a vacuum pumping device to improve the storage quality.

[0003] In the related art, a trigger switch is provided on the vacuum chamber. When the pressure in the vacuum chamber does not meet the conditions, the trigger switch triggers a control signal to enable the vacuum pumping device to evacuate the vacuum chamber; when the pressure in the vacuum chamber meets the conditions, the trigger switch seals the vacuum chamber. However, the existing trigger switch has poor sealing performance and there is a technical problem of air leakage in the vacuum chamber. Utility Model Content

[0004] The embodiment of the present application provides a refrigerator to solve the technical problems of poor sealing performance of the trigger switch of the existing refrigerator and air leakage in the vacuum chamber.

[0005] In a first aspect, an embodiment of the present application provides a refrigerator, comprising:

[0006] A box body is constructed to form a storage compartment;

[0007] A low-pressure storage structure is installed in the storage room and is structured to form a low-pressure storage chamber; the low-pressure storage chamber can be evacuated to form an air pressure lower than the atmospheric pressure outside the box; a mounting seat is formed on the low-pressure storage structure, and the mounting seat is formed with a receiving groove, and the bottom wall of the receiving groove is provided with a vent hole connecting the receiving groove and the low-pressure storage chamber;

[0008] an air extraction device, connected to the low-pressure storage chamber, and used to extract the air in the low-pressure storage chamber;

[0009] A trigger switch is installed on the low-pressure storage structure; the trigger switch includes:

[0010] a first sealing member configured to seal an end of the mounting seat away from the low-pressure storage structure;

[0011] A second sealing member is located in the receiving groove and opposite to the vent hole;

[0012] An elastic structure is located in the accommodating groove, and two ends of the elastic structure are respectively connected to the first sealing member and the second sealing member;

[0013] a switch member, located on a side of the first sealing member away from the mounting seat and electrically connected to the air extraction device;

[0014] The trigger switch has a trigger state and a sealing state. When the trigger switch is in the sealing state, the first sealing member is constructed to elastically deform toward the accommodating groove, and push the second sealing member to seal the vent hole through the elastic structure; when the trigger switch is in the trigger state, the second sealing member is separated from the vent hole, and the elastic structure drives the first sealing member to abut against the switch member, so that the switch member sends a control signal to the vacuum device, and the vacuum device vacuums the low-pressure storage chamber.

[0015] The refrigerator of the embodiment of the present application includes a box body, a low-pressure storage structure, an air extraction device and a trigger switch, wherein the low-pressure storage structure is installed in the storage room formed by the box body, and the low-pressure storage structure forms a low-pressure storage room, and the air extraction device is used to extract the air in the low-pressure storage room; the trigger switch is used to trigger the start of the air extraction device to realize automatic control of air extraction in the low-pressure storage room. A mounting seat is provided on the low-pressure storage structure to install the trigger switch; a receiving groove and an air vent connecting the receiving groove and the low-pressure storage room are formed on the mounting seat; the trigger switch includes a first sealing member, a second sealing member, an elastic structure and a switch member, the first sealing member seals the end of the mounting seat away from the low-pressure storage structure, the second sealing member and the elastic structure are located in the receiving groove, the elastic structure elastically connects the first sealing member and the second sealing member, and the switch member is electrically connected to the air extraction device. When the trigger switch is in the trigger state, the second sealing member is separated from the vent hole, and the elastic structure drives the first sealing member to abut against the switch member, so that the switch member sends a control signal to the air extraction device, thereby causing the air extraction device to extract air from the low-pressure storage chamber; when the trigger switch is in the sealed state, the first sealing member elastically deforms toward the receiving groove, and pushes the second sealing member to seal the vent hole through the elastic structure. In this way, the trigger switch and the low-pressure storage structure are double-sealed, ensuring the sealing of the trigger switch to the low-pressure storage chamber, avoiding air leakage in the low-pressure storage chamber, and improving the storage quality of the low-pressure storage chamber.

[0016] In some embodiments of the present application, the elastic structure includes a guide member and an elastic member, the first end of the guide member is connected to the first sealing member, and the second end of the guide member is connected to the second sealing member; the elastic member is elastically connected between the guide member and the bottom wall of the accommodating groove.

[0017] The elastic structure of the embodiment of the present application provides directional guidance for the deformation of the first seal and the movement of the second seal by setting a guide member, and provides elasticity between the first seal and the second seal by setting an elastic member, thereby ensuring that the first seal and the second seal can stably switch between the trigger state and the sealing state, thereby ensuring the sealing of the trigger switch.

[0018] In some embodiments of the present application, the guide member includes an inner guide portion and an outer connecting portion; the outer connecting portion is sleeved on the outside of the inner guide portion with a gap therebetween, the first end of the outer connecting portion is connected to the first end of the inner guide portion and is connected to the first sealing member, and the second end of the outer connecting portion is connected to the second sealing member; the elastic member is located between the inner guide portion and the outer connecting portion, and the two ends of the elastic member are compressed between the guide member and the bottom wall of the accommodating groove; the inner guide portion is slidably connected to the bottom wall of the accommodating groove.

[0019] The guide member of the embodiment of the present application is connected to the second seal member by providing an outer layer connection part; and by providing an inner layer guide part, the first end of the inner layer guide part is connected to the first end of the outer layer connection part, and is connected to the first seal member; the two ends of the elastic member are compressed between the guide member and the bottom wall of the receiving groove, so as to realize the elastic connection between the first seal member and the second seal member. The inner layer guide part is slidably connected to the bottom wall of the receiving groove, providing a guide function for the position movement of the first seal member part structure and the movement of the second seal member.

[0020] In some embodiments of the present application, a guide portion is provided on the bottom wall of the accommodating groove, the second end of the inner guide portion is slidably connected to the guide portion, and the elastic member is sleeved on the inner guide portion and the outer side of the guide portion.

[0021] In the embodiment of the present application, a guiding portion is provided on the bottom wall of the accommodating groove to achieve a sliding connection with the inner layer guiding portion, thereby providing a guiding function for the deformation and movement of the first sealing member and the movement of the second sealing member.

[0022] In some embodiments of the present application, a through hole is provided on the outer layer connecting portion, and the through hole connects the space between the outer layer connecting portion and the inner layer guiding portion with the accommodating groove.

[0023] The embodiment of the present application arranges a through hole on the outer layer connecting part to connect the interval and the receiving groove between the outer layer connecting part and the inner layer guiding part, thereby ensuring the consistency of the air pressure inside and outside the outer layer connecting part, avoiding the pressure difference between the inner and outer layers of the outer layer connecting part, and affecting the structural stability of the outer layer connecting part.

[0024] In some embodiments of the present application, a first sealing groove is provided on the bottom wall of the accommodating groove, and the vent hole is provided in the first sealing groove; when the trigger switch is in the sealed state, the second sealing member is sealed with the bottom wall of the accommodating groove, and at least a portion of the second sealing member extends into the first sealing groove and seals the first sealing groove.

[0025] The embodiment of the present application arranges a first sealing groove on the bottom wall of the groove, and arranges the vent hole in the first sealing groove, which is beneficial to ensure the sealing of the vent hole; and the second seal is sealed with the first sealing groove and the bottom wall of the groove at the same time, and a three-dimensional sealing surface is formed between the second seal and the low-pressure storage structure, which is beneficial to improve the sealing effect of the second seal.

[0026] In some embodiments of the present application, the first sealing member includes a main body portion, a deformation portion and a sealing portion, the deformation portion connects the main body portion and the sealing portion, and the deformation portion is arranged on the outside of the main body portion, and the sealing portion is arranged on the outside of the deformation portion; one side of the main body portion is connected to the elastic structure, and the other side of the main body portion is opposite to the switch element; the deformation portion is opposite to the accommodating groove, and when the trigger switch is in the sealing state, the deformation portion is constructed to elastically deform toward the inside of the accommodating groove; the sealing portion is constructed to seal the end of the mounting seat away from the low-pressure storage chamber.

[0027] The first sealing member of the embodiment of the present application is connected to the guide member and triggers the switch member by providing a main body, and a deformation portion is provided on the outer side of the main body. When the trigger switch is in a sealed state, the deformation portion elastically deforms toward the inside of the accommodating groove, so as to drive the second sealing member to move toward the bottom wall of the accommodating groove through the elastic structure, thereby allowing the second sealing member to seal the vent hole; by providing a sealing portion on the outer side of the deformation portion, the sealing mounting seat is away from the end of the low-pressure storage chamber.

[0028] In some embodiments of the present application, the trigger switch also includes a sealing cover, which is fixedly connected to the mounting seat, the sealing portion is located between the sealing cover and the end of the mounting seat, and the switch element is installed on the sealing cover; the sealing portion has a first side surface and a second side surface opposite to each other, a sealing protrusion is formed on the first side surface of the sealing portion, and a second sealing groove is provided at the end of the mounting seat away from the low-pressure storage chamber, and the sealing protrusion is sealed with the second sealing groove; and an elastic rib is formed on the second side surface of the sealing portion.

[0029] The embodiment of the present application provides a mounting position for the switch member by providing a sealing cover, and the sealing cover is fixedly connected to the mounting seat, and the sealing portion of the first sealing member is sandwiched between the sealing cover and the mounting seat to ensure the sealing performance of the connection between the sealing cover and the mounting seat. In addition, the first sealing member is provided with a sealing protrusion to seal with the second sealing groove on the mounting seat to improve the reliability of the sealing performance, and the provision of elastic convex ribs can not only improve the structural strength of the sealing portion, but also improve the sealing performance between the sealing portion and the sealing cover, thereby improving the sealing performance between the sealing cover and the mounting seat.

[0030] In some embodiments of the present application, one end of the sealing portion that is away from the deformation portion is bent and extended away from the sealing cover to form a sealing flange, the sealing flange is sleeved on the outer side of the mounting seat, and the sealing cover forms a sealing side surface, and the sealing flange is sealed between the sealing side surface and the mounting seat.

[0031] The first sealing member of the embodiment of the present application can not only improve the structural strength of the first sealing member by setting a sealing flange, but also increase the sealing position between the sealing cover and the mounting seat, increase the sealing area between the sealing cover and the mounting seat, and form a three-dimensional sealing structure between the sealing cover and the mounting seat, thereby ensuring the sealing between the sealing cover and the mounting seat, and further ensuring the sealing of the low-pressure storage chamber to avoid air leakage.

[0032] In a second aspect, an embodiment of the present application provides a refrigerator, comprising: a box body, a low-pressure storage structure, an exhaust device and a trigger switch, wherein the box body is structured to form a storage compartment; the low-pressure storage structure is installed in the storage compartment and is structured to form a low-pressure storage compartment; a mounting seat is formed on the low-pressure storage structure, the mounting seat is formed with a receiving groove, and the bottom wall of the receiving groove is provided with an air vent connecting the receiving groove and the low-pressure storage compartment; the exhaust device is connected to the low-pressure storage compartment and is used to extract the air in the low-pressure storage compartment; the trigger switch comprises two seals, which are respectively used to seal the end of the mounting seat and the air vent.

[0033] The refrigerator of the embodiment of the present application includes a box body, a low-pressure storage structure, an air extraction device and a trigger switch, wherein the low-pressure storage structure is installed in the storage room formed by the box body, and the low-pressure storage structure forms a low-pressure storage room, and the air extraction device is used to extract the air in the low-pressure storage room; the trigger switch is used to trigger the start of the air extraction device to realize automatic control of the air extraction of the low-pressure storage room. A mounting seat is provided on the low-pressure storage structure to install the trigger switch; a receiving groove and an air vent connecting the receiving groove and the low-pressure storage room are formed on the mounting seat; the trigger switch includes two sealing members, which are respectively used to seal the ends of the mounting seat and the air vent to realize double sealing, ensure the sealing of the trigger switch to the low-pressure storage room, avoid air leakage in the low-pressure storage room, and improve the storage quality of the low-pressure storage room. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the implementation methods in the embodiments of the present application or the related technologies, the following is a brief introduction to the drawings required for use in the embodiments or the related technology descriptions. Obviously, the drawings described below are some embodiments of the present application, and a person skilled in the art can also obtain other drawings based on these drawings.

[0035] Figure 1 A schematic diagram of the structure of a refrigerator provided in an embodiment of the present application;

[0036] Figure 2 A schematic diagram of the structure of the low-pressure storage structure and the trigger switch provided in the embodiment of the present application;

[0037] Figure 3 An exploded view of a low-pressure storage structure and a trigger switch provided in an embodiment of the present application;

[0038] Figure 4 A front view of the low-pressure storage structure and the trigger switch provided in the embodiment of the present application in the triggered state;

[0039] Figure 5 for Figure 4 AA section view in;

[0040] Figure 6 for Figure 5 An enlarged schematic diagram of the P region in FIG.

[0041] Figure 7 A front view of the low-pressure storage structure and the trigger switch provided in the embodiment of the present application in a sealed state;

[0042] Figure 8 for Figure 7 BB section view in;

[0043] Fig. 9 for Figure 5 An enlarged schematic diagram of the Q region in FIG.

[0044] Fig.10 A schematic cross-sectional view of a guide member according to an embodiment of the present application;

[0045] Fig.11 is a cross-sectional schematic diagram of a first sealing member according to an embodiment of the present application;

[0046] Fig.12 is a cross-sectional schematic diagram of a second sealing member according to an embodiment of the present application;

[0047] Fig.13 This is a schematic diagram of the structure of the mounting base of an embodiment of the present application;

[0048] Fig.14 An exploded schematic diagram of a switch member and a sealing cover provided in an embodiment of the present application.

[0049] Description of reference numerals:

[0050] 10: box body; 11: storage compartment; 20: low-pressure storage structure; 21: low-pressure storage chamber; 22: air extraction port; 30: trigger switch; 40: elastic structure; 100: mounting seat; 101: receiving groove; 102: vent hole; 103: first sealing groove; 104: second sealing groove; 110: groove bottom wall; 120: groove side wall; 130: guide part; 140: first lug; 150: screw; 200: first sealing member; 210: body; 211: connecting column; 220: deformation part; 230: sealing part; 231: sealing protrusion; 232: elastic convex rib; 240 : Sealing flange; 250: Extension part; 300: Second sealing member; 310: Sealing body; 311: Bayonet; 320: Sealing ring; 400: Switch member; 500: Guide member; 501: Annular cavity; 510: Inner guide part; 511: Connecting groove; 512: Sliding part; 520: Outer connecting part; 521: Through hole; 522: Card foot; 600: Elastic member; 700: Sealing cover; 701: Opening; 702: Sealing slope; 703: Sealing side; 710: Cover body; 720: Second lug; 730: Limiting wall; 740: Buckle; 750: Positioning structure. DETAILED DESCRIPTION

[0051] In order to make the purpose, implementation mode and advantages of the present application clearer, the exemplary implementation mode of the present application will be clearly and completely described below in conjunction with the drawings in the exemplary embodiments of the present application. Obviously, the described exemplary embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0052] It should be noted that the brief description of terms in this application is only for the convenience of understanding the embodiments described below, and is not intended to limit the embodiments of this application. Unless otherwise specified, these terms should be understood according to their ordinary and common meanings.

[0053] In addition, the terms "include" and "have" and any variations thereof are intended to cover but not exclude inclusion, for example, a product or device comprising a list of components is not necessarily limited to those components expressly listed but may include other components not expressly listed or inherent to such products or devices.

[0054] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0055] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0056] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0057] In some refrigerators, a vacuum chamber is provided to improve the storage quality of items. Some vacuum chambers are timed or user-operated to perform vacuuming operations, so the environment of the vacuum chamber is unstable, affecting the storage quality. A vacuum chamber with a trigger switch came into being. When the pressure in the vacuum chamber meets the conditions, the trigger switch seals the vacuum chamber; when the pressure in the vacuum chamber does not meet the conditions, the trigger switch is triggered and sends a control signal to enable the vacuum pump to evacuate the vacuum chamber, self-regulate the pressure in the vacuum chamber, and improve the storage quality.

[0058] However, the existing trigger switch is a single-layer sealing structure with poor sealing performance and air leakage, which affects the storage quality of the vacuum chamber.

[0059] In view of this, an embodiment of the present application provides a refrigerator equipped with a low-pressure storage chamber; a double-layer seal is used between the trigger switch and the low-pressure storage chamber to improve the sealing performance of the trigger switch, ensure the pressure environment of the low-pressure storage chamber, and further ensure the storage quality.

[0060] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0061] Combination Figure 1 The embodiment of the present application provides a refrigerator, which includes a box body 10, and the box body 10 is structured to form a storage compartment 11, and the storage compartment 11 is used to store food and other items. There can be multiple storage compartments 11. The multiple storage compartments 11 can be divided into a refrigeration compartment, a freezing compartment, a temperature-changing compartment, etc. according to the storage temperature.

[0062] The box body 10 may include a box shell and a box liner installed in the box shell, the box liner forms a storage compartment 11 with an opening at the front side, and an insulation layer is filled between the box shell and the box liner to keep the storage compartment 11 warm.

[0063] The refrigerator of the embodiment of the present application further includes a door body, which is used to open or close the storage compartment 11. The door body may be hinged on the box body 10 and may rotate relative to the box body 10 to open or close the storage compartment 11. The door body may be slidably installed in the box body 10 and may be pulled relative to the box body 10 to open or close the storage compartment 11.

[0064] The refrigerator may be provided with a plurality of door bodies, and each storage compartment 11 may correspond to a door body; or, a plurality of storage compartments 11 may share one door body.

[0065] The refrigerator of the embodiment of the present application also includes a refrigeration system to keep the storage compartment 11 at a low temperature. The refrigeration system can be an evaporative refrigeration system, which at least includes a compressor, an evaporator, a condenser, and a throttling element, etc. The working principle of the refrigeration system is omitted in the embodiment of the present application. Of course, the refrigerator can also use other forms of refrigeration systems, such as an absorption refrigeration system, a thermoelectric refrigeration system, etc.

[0066] Continue to refer to Figure 1 The refrigerator of the embodiment of the present application further includes a low-pressure storage structure 20, which is installed in the storage compartment 11, and the low-pressure storage structure 20 is constructed to form a low-pressure storage chamber.

[0067] The refrigerator of the embodiment of the present application further includes an air extraction device and a pipeline connected between the air extraction device and the low-pressure storage structure 20. Exemplarily, the air extraction device may be a vacuum pump.

[0068] The vacuum device evacuates the low-pressure storage chamber through the pipeline to make the low-pressure storage chamber in a low-pressure state. The pressure in the low-pressure storage chamber is between a standard atmospheric pressure and an absolute vacuum. Since the air pressure in the low-pressure storage chamber is lower than the standard atmospheric pressure, technicians in this field also commonly call it a "vacuum chamber".

[0069] In some embodiments, an air suction port 22 is formed on the low-pressure storage structure 20, and the air suction port 22 is connected to an air suction device through a pipeline, so that the air suction device can exhaust air from the low-pressure storage chamber.

[0070] In some embodiments, the refrigerator further includes a control device, which is electrically connected to the vacuum device to achieve automatic control of the vacuuming of the low-pressure storage chamber.

[0071] In the embodiment of the present application, the low-pressure storage structure 20 is disposed in the refrigerated room. It should be understood that in other embodiments, the low-pressure storage structure 20 can be disposed in other storage compartments 11, for example, the low-pressure storage structure 20 can be disposed in the variable temperature room.

[0072] Combination Figure 1 and Figure 2 In some embodiments, the low-pressure storage structure 20 is roughly in the shape of a flat rectangular parallelepiped to better fit the space in the refrigerator and have a larger storage space.

[0073] Combination Figures 3 to 5 The low-pressure storage structure 20 is constructed to form a low-pressure storage chamber 21, and the air extraction device is connected to the low-pressure storage structure 20 so that the air extraction device is in communication with the low-pressure storage chamber 21. Exemplarily, the low-pressure storage structure 20 is provided with an air extraction port 22, and the air extraction port 22 is connected to and communicates with the air extraction device to extract the air in the low-pressure storage chamber 21. The low-pressure storage chamber 21 can be evacuated by the air extraction device to form an air pressure lower than the atmospheric pressure outside the box body 10, so as to improve the quality of the stored items in the low-pressure storage chamber 21.

[0074] The refrigerator of the embodiment of the present application also includes a trigger switch 30 installed on the low-pressure storage structure 20. The trigger switch 30 can sense the air pressure in the low-pressure storage chamber 21 and send a control signal to control the working state of the exhaust device.

[0075] In some embodiments, when the air pressure in the low-pressure storage chamber 21 is higher than a preset air pressure, the trigger switch 30 sends a control signal to start the vacuum device, thereby vacuuming the low-pressure storage chamber 21 to ensure a low-pressure storage environment in the low-pressure storage chamber 21.

[0076] Exemplarily, the trigger switch 30 is directly electrically connected to the air extraction device, and the air extraction device starts the air extraction operation of the low-pressure storage chamber 21 according to the control signal of the trigger switch 30. Alternatively, the trigger switch 30 and the air extraction device are electrically connected to the control device of the refrigerator respectively, the trigger switch 30 sends a control signal to the control device, and the control device controls the air extraction device to start the air extraction operation according to the control signal.

[0077] Furthermore, the trigger switch 30 is configured to seal the low-pressure storage chamber 21 to ensure a low-pressure storage environment when the air pressure in the low-pressure storage chamber 21 meets a preset storage air pressure. Therefore, the sealing performance of the trigger switch 30 is very important.

[0078] Combination Figure 2 and Figure 3 A mounting seat 100 is formed on the low-pressure storage structure 20 for mounting the trigger switch 30. Figures 4 to 6The mounting base 100 is formed with a receiving groove 101 for receiving at least a portion of the trigger switch 30 , for example, a sealing structure of the trigger switch 30 .

[0079] In some embodiments, the mounting base 100 and the low-pressure storage structure 20 are integrally formed as one piece, which helps to ensure the sealing of the low-pressure storage chamber 21.

[0080] In some embodiments, the mounting seat 100 is an annular body arranged on the side wall of the low-pressure storage structure 20, the annular body forms the groove side wall 120 of the accommodating groove 101, and the side wall portion of the low-pressure storage structure 20 enclosed by the groove side wall 120 forms the groove bottom wall 110 of the accommodating groove 101.

[0081] The receiving groove 101 has a large receiving space. When the receiving groove 101 is directly sealed, the sealing reliability is low. Therefore, in the embodiment of the present application, a vent hole 102 is provided on the groove bottom wall 110 of the receiving groove 101 to connect the receiving groove 101 and the low-pressure storage chamber 21. In this way, at least part of the sealing structure of the trigger switch 30 seals the low-pressure storage chamber 21 by sealing the vent hole 102, so as to improve the sealing performance of the trigger switch 30.

[0082] In some embodiments, the side wall 120 of the receiving groove 101 is a circular side wall, which facilitates the setting and sealing of the sealing structure of the trigger switch 30. The vent hole 102 can be a circular hole, an elliptical hole, a polygonal hole, etc. The vent hole 102 can be set one or more.

[0083] The trigger switch 30 of the embodiment of the present application includes two seals, one of which is used to seal the end of the mounting seat 100, specifically, the end of the mounting seat 100 away from the low-pressure storage structure 20; the other seal is used to seal the vent hole 102. In other words, the two seals of the trigger switch 30 are used to seal one end of the slot opening of the receiving slot 101 and one end of the slot bottom wall 110, respectively.

[0084] Therefore, the trigger switch 30 of the embodiment of the present application is provided with two seals, which are respectively used to seal the end of the mounting base 100 and the vent hole 102, so as to improve the sealing performance of the trigger switch 30, ensure the low-pressure storage environment of the low-pressure storage chamber 21, and avoid the problem of air leakage.

[0085] The trigger switch 30 of the embodiment of the present application has a trigger state and a sealing state. When the trigger switch 30 is in the sealing device, the two seals of the trigger switch 30 respectively seal the end of the mounting seat 100 and the vent 102; when the trigger switch 30 is in the trigger state, the vent 102 is constructed to be connected to the accommodating groove 101, and the trigger switch 30 is triggered to send a control signal to the vacuum device, so that the vacuum device performs an air extraction operation on the low-pressure storage chamber 21.

[0086] in, Figures 4 to 6 The figure shows the positional relationship of the various components of the trigger switch in the trigger state of the embodiment of the present application; Figures 7 to 9 The figure shows the positional relationship of the various components of the trigger switch of the embodiment of the present application when it is in a sealed state.

[0087] Combine the following Figures 3 to 9 , the specific structure and function of the trigger switch 30 in the embodiment of the present application are described in detail.

[0088] In some embodiments, the trigger switch 30 includes a first seal 200, which is configured to seal the end of the mounting seat 100 away from the low-pressure storage structure 20. The first seal 200 is an elastic seal, for example, a rubber member, a silicone member, etc.

[0089] In some embodiments, the trigger switch 30 includes a second sealing member 300, which is located in the receiving groove 101 and opposite to the vent hole 102. When the second sealing member 300 is in a sealed state, the vent hole 102 is sealed; when in a triggered state, the second sealing member 300 is separated from the vent hole 102, so that the low-pressure storage chamber 21 is connected to the receiving groove 101 through the vent hole 102.

[0090] In some embodiments, the trigger switch 30 includes an elastic structure 40, which is located in the receiving groove 101, and the two ends of the elastic structure 40 are respectively connected to the first seal 200 and the second seal 300. The elastic structure 40 has a compressive elastic force to achieve an elastic connection between the first seal 200 and the second seal 300.

[0091] In some embodiments, the trigger switch 30 includes a switch 400, which is an electrical component, and can be a pressure switch, a proximity switch, a micro switch, etc. The switch 400 is located on the side of the first sealing member 200 away from the mounting seat 100, and is electrically connected to the air extraction device. When the first sealing member 200 abuts against the switch 400, the switch 400 is triggered to send a control signal, as described in detail in Figure 5 and Figure 6 When the first sealing member 200 is opposite to the switch member 400 and has a gap, the switch member 400 is disconnected, specifically referring to Figure 8 and Fig. 9 .

[0092] Combination Figures 7 to 9When the trigger switch 30 is in a sealed state, the air pressure in the low-pressure storage chamber 21 is lower than the atmospheric pressure outside the box 10. The first sealing member 200 is elastically deformed toward the receiving groove 101 under the action of the atmospheric pressure, and the second sealing member 300 is pushed to seal the vent hole 102 through the elastic structure 40, so that the trigger switch 30 is double sealed. In the sealed state, the first sealing member 200 is deformed toward the receiving groove 101 by the pressure difference between the air pressure in the receiving groove 101 and the atmospheric pressure. Compared with the pressure difference between the atmospheric pressure and the low-pressure storage chamber 21, the pressure difference between the atmospheric pressure and the receiving groove 101 is smaller, and the pressure on the first sealing member 200 is smaller, which is conducive to ensuring the stability of the seal and the service life of the first sealing member 200.

[0093] Combination Figures 4 to 6 When the trigger switch 30 is in the trigger state, under the action of the air pressure in the low-pressure storage chamber 21 and the elastic force of the elastic structure 40, the second sealing member 300 is separated from the vent hole 102, and the elastic structure 40 drives the first sealing member 200 to abut against the switch member 400, so that the switch member 400 sends a control signal to the exhaust device, and the exhaust device exhausts the low-pressure storage chamber 21.

[0094] Through the above arrangement, the trigger switch 30 of the embodiment of the present application realizes double sealing of the low-pressure storage chamber 21 by setting the first sealing member 200 to seal the end of the mounting seat 100 away from the low-pressure storage structure 20, and by setting the second sealing member 300 to seal the vent 102, thereby improving the sealing performance of the trigger switch 30, avoiding air leakage in the low-pressure storage chamber 21, and ensuring its low-pressure storage environment. The trigger switch 30 of the embodiment of the present application elastically connects the first sealing member 200 and the second sealing member 300 by setting the elastic structure 40. When the trigger switch 30 is in the trigger state, the second sealing member 300 is separated from the vent 102 under the action of the air pressure in the low-pressure storage chamber 21; and under the action of the elastic structure 40, the first sealing member 200 is driven to abut against the switch member 400, so that the switch member 400 sends a control signal to the air extraction device, and the air extraction device extracts air from the low-pressure storage chamber 21, thereby realizing automatic control of the air extraction of the low-pressure storage chamber 21, and ensuring the storage quality of the low-pressure storage chamber 21.

[0095] Combination Figure 3 , Figure 6 as well as Fig. 9 In some embodiments, at least a portion of the elastic structure 40 is elastic to achieve an elastic seal between the first sealing member 200 and the second sealing member 300 .

[0096] In some embodiments, the elastic structure 40 includes an elastic member 600, and the elastic member 600 is located between the first sealing member 200 and the bottom wall 110 of the accommodating groove 101. The compression elastic force of the elastic member 600 when the vacuum device starts to pump air is less than or equal to the pressure of the design air pressure of the low-pressure storage chamber 21 acting on the first sealing member 200. As the vacuum device continues to pump air, the air pressure in the low-pressure storage chamber 21 gradually decreases. Under the action of the external atmospheric pressure, the first sealing member 200 is deformed, and the elastic force of the elastic member 600 is matched, and the second sealing member 300 seals the vent 102. The elastic member 600 can be a spring, and the elastic member 600 can also be an elastic rubber member, a silicone member, etc.

[0097] In some embodiments, the elastic structure 40 includes a guide member 500, which is used to guide the deformation direction of the first seal 200 and the movement direction of the second seal 300. The guide member 500 has a first end and a second end opposite to each other, the first end of the guide member 500 is connected to the first seal 200, and the second end of the guide member 500 is connected to the second seal 300; the elastic member 600 is elastically connected between the guide member 500 and the bottom wall 110 of the accommodating groove 101, so that the first seal 200 and the second seal 300 are elastically connected.

[0098] The second sealing member 300 is sleeved on the outer side of the elastic member 600 , so the second sealing member 300 is an annular sealing gasket.

[0099] The elastic structure 40 of the embodiment of the present application provides directional guidance for the deformation of the first seal 200 and the movement of the second seal 300 by setting a guide member 500, and provides elasticity between the first seal 200 and the second seal 300 by setting an elastic member 600, thereby ensuring that the first seal 200 and the second seal 300 can stably switch between the trigger state and the sealing state, thereby ensuring the sealing of the trigger switch 30.

[0100] Combination Fig.10 The guide member 500 of the embodiment of the present application includes an inner guide portion 510 and an outer connecting portion 520; the outer connecting portion 520 is sleeved on the outer side of the inner guide portion 510, and there is a gap between the two, so that an annular cavity 501 is formed between the inner guide portion 510 and the outer connecting portion 520.

[0101] The outer connecting portion 520 has a first end and a second end opposite to each other, and the inner guiding portion 510 has a first end and a second end opposite to each other, and the first end of the outer connecting portion 520 is connected to the first end of the inner guiding portion 510, so that the first end of the annular cavity 501 is closed. It can also be understood that the guide member 500 further includes an end wall, and the end wall connects the first end of the outer connecting portion 520 and the first end of the inner guiding portion 510.

[0102] The first end of the outer layer connection part 520 and the first end of the inner layer guide part 510 form the first end of the guide member 500 and are connected to the first sealing member 200. Fig.10 , the first end of the inner layer guide portion 510 is provided with a connecting groove 511; Fig.11 , a connecting column 211 is provided on the first sealing member 200; Figure 6 and Fig. 9 , the connecting column 211 is accommodated in the connecting groove 511 and connected, for example, the connecting column 211 is connected with the connecting groove 511 by interference fit; for another example, the connecting column 211 is bonded with the connecting groove 511, thereby realizing the connection between the first sealing member 200 and the guide member 500. In this embodiment, the guide member 500 and the first sealing member 200 are connected by a concave-convex fit, which not only has a stable connection, but also does not need to provide an open-shaped connection structure on the first sealing member 200, which is conducive to ensuring the sealing performance of the first sealing member 200.

[0103] Alternatively, the first end of the guide member 500 is bonded to the first sealing member 200 .

[0104] The second end of the outer layer connection part 520 is connected to the second sealing member 300, and the connection method includes but is not limited to interference connection, bonding, etc. In some embodiments, the second end of the outer layer connection part 520 is snap-fitted to the second sealing member 300. Fig.10 The second end of the outer connecting portion 520 is bent away from the inner guiding portion 510 to extend to form a clamping foot 522; Fig.12 The second sealing member 300 is provided with a bayonet 311 , which is engaged with the clamping foot 522 to realize the connection between the outer layer connecting portion 520 and the second sealing member 300 .

[0105] Combination Figure 6 and Fig. 9 The elastic member 600 of the embodiment of the present application is located between the inner layer guide portion 510 and the outer layer connection portion 520, that is, at least part of the elastic member 600 is located in the annular cavity 501; and the two ends of the elastic member 600 are compressed between the guide member 500 and the bottom wall 110 of the receiving groove 101. The elastic member 600 is sleeved on the outer side of the inner layer guide portion 510, one end of the elastic member 600 abuts against the connection between the inner layer guide portion 510 and the outer layer connection portion 520, and the other end of the elastic member 600 abuts against the bottom wall 110 of the receiving groove 101.

[0106] In some embodiments, the outer connecting portion 520 is roughly conical in shape, and the outer diameter of the first end of the outer connecting portion 520 is smaller than the outer diameter of the second end thereof. Such a configuration can not only provide space for the installation of the second sealing member 300 and the elastic member 600, but also when the trigger switch 30 is in a sealed state, the outer connecting portion 520 is roughly conical in shape, which is beneficial to improve the sealing of the second sealing member 300 to the vent hole 102.

[0107] In some of the possible embodiments, combined with Fig.10 A through hole 521 is provided on the outer connecting part 520, and the through hole 521 connects the interval between the outer connecting part 520 and the inner guiding part 510 with the receiving groove 101. That is to say, the through hole 521 connects the annular cavity 501 and the receiving groove 101. Such a configuration ensures the consistency of the air pressure between the annular cavity 501 and the receiving groove 101, and avoids the pressure difference between the annular cavity 501 and the receiving groove 101, which affects the structural stability of the outer connecting part 520.

[0108] Optionally, a plurality of through holes 521 are provided, for example, two, three, etc., and the plurality of through holes are arranged at intervals along the circumference of the outer layer connecting portion 520. The through holes 521 may be circular holes, elliptical holes, polygonal holes, etc.

[0109] In some embodiments, the inner guide portion 510 is slidably connected to the bottom wall 110 of the accommodating groove 101 so that the guide member 500 can move relative to the bottom wall 110 of the accommodating groove 101, thereby providing a guide for the position movement of the partial structure of the first seal 200 and the movement of the second seal 300.

[0110] The guide member 500 of the embodiment of the present application is connected to the second seal member 300 by providing an outer layer connection portion 520; and by providing an inner layer guide portion 510, the first end of the inner layer guide portion 510 is connected to the first end of the outer layer connection portion 520, and is connected to the first seal member 200; the two ends of the elastic member 600 are compressed between the guide member 500 and the groove bottom wall 110 of the receiving groove 101, so as to realize the elastic connection between the first seal member 200 and the second seal member 300. The inner layer guide portion 510 is slidably connected to the groove bottom wall 110 of the receiving groove 101, providing a guiding function for the position movement of the partial structure of the first seal member 200 and the movement of the second seal member 300.

[0111] In some implementations, combining Figure 6 , Fig. 9 as well as Fig.13The bottom wall 110 of the receiving groove 101 is provided with a guide portion 130, and the second end of the inner layer guide portion 510 is slidably connected to the guide portion 130, and the inner layer guide portion 510 moves toward the bottom wall 110 of the receiving groove 101, or moves away from the bottom wall 110 of the receiving groove 101. In addition, the elastic member 600 is sleeved on the outer sides of the inner layer guide portion 510 and the guide portion 130.

[0112] Exemplarily, the guide portion 130 is arranged to protrude from the bottom wall 110 of the receiving groove 101, and a groove is arranged on the guide portion 130. The second end of the inner layer guide portion 510 can be slidably accommodated in the groove of the guide portion 130, that is, the guide portion 130 is sleeved on the outer side of the inner layer guide portion 510, so that the inner layer guide portion 510 can move relative to the guide portion 130. Such an arrangement makes the structure of the guide member 500 relatively compact.

[0113] In some embodiments, the inner layer guide portion 510 includes a connecting section and a sliding portion 512 connected to each other, the end of the connecting section away from the sliding portion 512 is connected to the outer layer connecting portion 520, the sliding portion 512 is slidably connected to the guide portion 130, and the diameter of the sliding portion 512 is smaller than the diameter of the connecting section. The outer diameter of the guide portion 130 is equal to the diameter of the connecting section, so that the elastic member 600 is sleeved on the outer side of the connecting section and the guide portion 130, and the interval between the elastic member 600 and the connecting section is equal to the interval between the elastic member 600 and the guide portion 130, which is conducive to ensuring the stability of the deformation of the elastic member 600 and avoiding the skew of the elastic member 600.

[0114] Alternatively, the second end of the inner layer guide portion 510 is formed with a groove structure or a hole structure so that the guide portion 130 can be accommodated therein. That is, the inner layer guide portion 510 is sleeved on the outer side of the guide portion 130 .

[0115] Continue to refer to Fig. 9 as well as Fig.13 In some embodiments, a first sealing groove 103 is provided on the groove bottom wall 110 of the receiving groove 101, and the vent hole 102 is provided in the first sealing groove 103. The first sealing groove 103 is an annular groove. Optionally, a plurality of vent holes 102 are provided, and the plurality of vent holes 102 are arranged at intervals along the circumference of the first sealing groove 103.

[0116] When the trigger switch 30 is in a sealed state, the second sealing member 300 is sealed with the bottom wall 110 of the receiving groove 101, and at least a portion of the second sealing member 300 extends into the first sealing groove 103 and seals the first sealing groove 103. In this way, a three-dimensional sealing surface is formed to improve the sealing effect.

[0117] Combination Fig.12The second sealing member 300 includes an integrally formed sealing body 310 and a sealing ring 320. The sealing body 310 has a first side surface and a second side surface that are opposite to each other. The first side surface of the sealing body 310 is provided with a bayonet 311 for achieving a bayonet connection with the guide member 500. The sealing ring 320 is provided on the second side surface of the sealing body 310, and the sealing ring 320 can be matched and accommodated in the first sealing groove 103 to seal the vent hole 102.

[0118] Furthermore, the sealing ring 320 covers a portion of the second side surface of the sealing body 310, and another portion of the second side surface of the sealing body 310 is sealed with the bottom wall 110 of the receiving groove 101. In this way, a three-dimensional sealing surface is formed between the second sealing member 300 and the bottom wall 110 of the receiving groove 101, thereby improving the sealing effect of the second sealing member 300.

[0119] Combination Figure 6 , Fig. 9 as well as Fig.11 In some embodiments, the first sealing member 200 includes a body portion 210, one side of the body portion 210 is connected to the elastic structure 40, and the other side of the body portion 210 is opposite to the switch member 400. Exemplarily, a connecting column 211 is provided on one side of the body portion 210, and the connecting column 211 is used to connect with the guide member 500 of the elastic structure 40.

[0120] The first sealing member 200 further includes a deformation portion 220, which is connected to the main body 210 and is disposed around the outside of the main body 210. The thickness of the deformation portion 220 is smaller than that of the main body 210, and the thickness of the deformation portion 220 is small, which is convenient for deformation; the thickness of the main body 210 is large, which is convenient for connection with the guide member 500, and abuts against the switch member 400 in the triggered state.

[0121] The deformation portion 220 is opposite to the accommodating groove 101, and when the trigger switch 30 is in a sealed state, the deformation portion 220 is constructed to elastically deform toward the accommodating groove 101, so as to drive the second sealing member 300 to move toward the bottom wall 110 of the accommodating groove 101 through the elastic structure 40, thereby allowing the second sealing member 300 to seal the vent hole 102.

[0122] In some embodiments, the deformation portion 220 is trumpet-shaped, and the side of the deformation portion 220 with a smaller diameter is connected to the main body 210, so that the deformation portion 220 has a longer inclined wall, which is not only conducive to deformation, but also conducive to sealing.

[0123] The first sealing member 200 includes a sealing portion 230 , which is connected to the deformation portion 220 and is disposed around the outer side of the deformation portion 220 . The sealing portion 230 is configured to seal the end of the mounting seat 100 away from the low-pressure storage chamber 21 .

[0124] In some embodiments, the first sealing member 200 is an integrally formed one-piece member to ensure the sealing performance of the first sealing member 200 .

[0125] The first sealing member 200 of the embodiment of the present application is connected to the guide member 500 and triggers the switch member 400 by providing a main body 210. By providing a deformation portion 220 on the outer side of the main body 210, when the trigger switch 30 is in a sealed state, the deformation portion 220 elastically deforms toward the inside of the accommodating groove 101, so as to drive the second sealing member 300 to move toward the groove bottom wall 110 of the accommodating groove 101 through the elastic structure 40, thereby allowing the second sealing member 300 to seal the vent hole 102; by providing a sealing portion 230 on the outer side of the deformation portion 220, the sealing mounting seat 100 is away from the end of the low-pressure storage chamber 21.

[0126] Reference Figure 6 , Fig. 9 , Fig.13 as well as Fig.14 In some embodiments, the trigger switch 30 further includes a sealing cover 700 , which is fixedly connected to the mounting base 100 , and the sealing portion 230 is located between the sealing cover 700 and the end of the mounting base 100 to achieve sealing of the end of the mounting base 100 .

[0127] In some embodiments, the outer side of the mounting base 100 is provided with a first lug 140, and the outer side of the sealing cover 700 is provided with a second lug 720. The first lug 140 and the second lug 720 are connected by a connecting member, and the connecting member includes but is not limited to screws, bolts, etc., and the connection method is stable and reliable. Figure 3 The first lug 140 and the second lug 720 are connected by a screw 150, and the connection is stable and reliable.

[0128] In some embodiments, the switch element 400 is mounted on the sealing cover 700 , and an opening 701 is provided on the sealing cover 700 , so that the switch element 400 is directly opposite to the first sealing element 200 , and is triggered by the first sealing element 200 .

[0129] Exemplarily, the switch member 400 is snap-connected to the sealing cover 700; or, the switch member 400 is fixed to the sealing cover 700 by screws.

[0130] In some embodiments, the sealing cover 700 includes a cover body 710 having an opening 701. The cover body 710 is opposite to the end of the mounting seat 100, and the sealing portion 230 is located between the cover body 710 and the end of the mounting seat 100. The second lug 720 is disposed at the edge of the cover body 710.

[0131] The sealing cover 700 includes a limiting wall 730, which is annular and arranged around the outside of the opening 701. The limiting wall 730 is located on the side of the cover body 710 away from the first sealing member 200. A buckle 740 is formed on the limiting wall 730, and the buckle 740 is engaged with the switch member 400 to fix the switch member 400 on the sealing cover 700.

[0132] A positioning structure 750 is also formed on the limiting wall 730 , and the positioning structure 750 is connected with the switch component 400 to provide positioning for the installation of the switch component 400 , thereby improving the convenience of installing the switch component 400 .

[0133] Exemplarily, the positioning structure 750 can be a positioning column arranged on the limiting wall 730, and the switch component 400 is provided with a positioning hole that cooperates with the positioning column; or, the positioning structure 750 is a groove structure arranged on the limiting wall 730, and the switch component 400 is provided with a protrusion structure that cooperates with the groove structure.

[0134] Recombination Figure 6 , Fig. 9 , Fig.11 as well as Fig.13 The sealing portion 230 has a first side surface and a second side surface facing each other. A sealing protrusion 231 is formed on the first side surface of the sealing portion 230. A second sealing groove 104 is provided at the end of the mounting seat 100 away from the low-pressure storage chamber 21. The sealing protrusion 231 is sealed with the second sealing groove 104. The second sealing groove 104 is provided at one end of the groove side wall 120 of the receiving groove 101 away from the groove bottom wall 110. The sealing protrusion 231 cooperates with the second sealing groove 104 to improve the sealing performance between the sealing portion 230 and the mounting seat 100, thereby improving the sealing performance between the sealing cover 700 and the mounting seat 100.

[0135] In some embodiments, an elastic rib 232 is formed on the second side of the sealing portion 230, which can not only improve the structural strength of the sealing portion 230, but also improve the sealing between the sealing portion 230 and the sealing cover 700, thereby improving the sealing performance between the sealing cover 700 and the mounting seat 100.

[0136] Optionally, a plurality of elastic convex ribs 232 are provided, which are sequentially sleeved along the radial direction of the sealing portion 230 to further improve the structural strength and sealing performance of the sealing portion 230 .

[0137] Combination Fig. 9 In some embodiments, a sealing slope 702 is formed on the side of the sealing cover 700 facing the mounting seat 100 , and the sealing slope 702 abuts against the obliquely arranged deformation portion 220 of the first sealing member 200 to improve the sealing performance of the first sealing member 200 .

[0138] Continue to refer to Fig. 9 as well as Fig.11 One end of the sealing portion 230 that is away from the deformation portion 220 is bent and extended away from the sealing cover 700 to form a sealing flange 240. The sealing flange 240 is sleeved on the outer side of the mounting seat 100, and the sealing cover 700 is formed with a sealing side surface 703. The sealing flange 240 is sealed between the sealing side surface 703 and the mounting seat 100.

[0139] Such a configuration can not only improve the structural strength of the first sealing member 200, but also increase the sealing position between the sealing cover 700 and the mounting seat 100, increase the sealing area between the sealing cover 700 and the mounting seat 100, so that a three-dimensional sealing structure is formed between the sealing cover 700 and the mounting seat 100, thereby ensuring the sealing between the sealing cover 700 and the mounting seat 100, and further ensuring the sealing of the low-pressure storage chamber 21 to avoid air leakage. By setting the sealing flange, it can be ensured that the first sealing member is not assembled in place during the assembly process and wrinkles are generated, affecting the sealing.

[0140] In some embodiments, one end of the sealing flange 240 away from the sealing portion 230 extends away from the center of the first sealing member 200 to form an extension portion 250 , which helps to improve the structural strength of the first sealing member 200 .

[0141] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

[0142] For the convenience of explanation, the above description has been made in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or limit the embodiments to the specific forms disclosed above. Based on the above teachings, various modifications and variations can be obtained. The selection and description of the above embodiments are to better explain the principles and practical applications, so that those skilled in the art can better use the embodiments and various different variations of the embodiments suitable for specific use considerations.

Claims

1. A refrigerator, characterized in that: include: A box body is constructed to form a storage compartment; A low-pressure storage structure is installed in the storage room and is constructed to form a low-pressure storage room; The low-pressure storage chamber can be evacuated to form an air pressure lower than the atmospheric pressure outside the box; The low-pressure storage structure is provided with a mounting seat, the mounting seat is provided with a receiving groove, and the bottom wall of the receiving groove is provided with a vent hole connecting the receiving groove and the low-pressure storage chamber; an air extraction device, connected to the low-pressure storage chamber, and used to extract the air in the low-pressure storage chamber; A trigger switch is installed on the low-pressure storage structure; The trigger switch comprises: a first sealing member configured to seal an end of the mounting seat away from the low-pressure storage structure; A second sealing member is located in the receiving groove and opposite to the vent hole; An elastic structure is located in the accommodating groove, and two ends of the elastic structure are respectively connected to the first sealing member and the second sealing member; a switch member, located on a side of the first sealing member away from the mounting seat and electrically connected to the air extraction device; The trigger switch has a trigger state and a sealing state. When the trigger switch is in the sealing state, the first sealing member is constructed to elastically deform toward the accommodating groove, and push the second sealing member to seal the vent hole through the elastic structure; when the trigger switch is in the trigger state, the second sealing member is separated from the vent hole, and the elastic structure drives the first sealing member to abut against the switch member, so that the switch member sends a control signal to the vacuum device, and the vacuum device vacuums the low-pressure storage chamber.

2. The refrigerator according to claim 1, characterized in that: The elastic structure includes a guide member and an elastic member, the first end of the guide member is connected to the first sealing member, and the second end of the guide member is connected to the second sealing member; the elastic member is elastically connected between the guide member and the bottom wall of the accommodating groove.

3. The refrigerator according to claim 2, characterized in that: The guide member includes an inner guide portion and an outer connecting portion; the outer connecting portion is sleeved on the outer side of the inner guide portion with a gap therebetween, the first end of the outer connecting portion is connected to the first end of the inner guide portion and is connected to the first sealing member, and the second end of the outer connecting portion is connected to the second sealing member; the elastic member is located between the inner guide portion and the outer connecting portion, and the two ends of the elastic member are compressed between the guide member and the bottom wall of the accommodating groove; the inner guide portion is slidably connected to the bottom wall of the accommodating groove.

4. The refrigerator according to claim 3, characterized in that: A guiding part is arranged on the bottom wall of the accommodating groove, the second end of the inner layer guiding part is slidably connected to the guiding part, and the elastic member is sleeved on the inner layer guiding part and the outer side of the guiding part.

5. The refrigerator according to claim 3, characterized in that: The outer layer connection part is provided with a through hole, and the through hole connects the interval between the outer layer connection part and the inner layer guide part with the accommodating groove.

6. The refrigerator according to any one of claims 1 to 5, characterized in that: A first sealing groove is arranged on the bottom wall of the accommodating groove, and the vent hole is arranged in the first sealing groove; when the trigger switch is in the sealing state, the second sealing member is sealed with the bottom wall of the accommodating groove, and at least a part of the second sealing member extends into the first sealing groove and seals the first sealing groove.

7. The refrigerator according to any one of claims 1 to 5, characterized in that: The first sealing member includes a main body, a deformation part and a sealing part, wherein the deformation part connects the main body and the sealing part, and the deformation part is arranged outside the main body, and the sealing part is arranged outside the deformation part; One side of the main body is connected to the elastic structure, and the other side of the main body is opposite to the switch element; The deformation portion is opposite to the receiving groove, and when the trigger switch is in the sealed state, the deformation portion is configured to elastically deform toward the inside of the receiving groove; The sealing portion is configured to seal an end portion of the mounting seat facing away from the low-pressure storage chamber.

8. The refrigerator according to claim 7, characterized in that: The trigger switch further comprises a sealing cover, the sealing cover is fixedly connected to the mounting seat, the sealing portion is located between the sealing cover and the end of the mounting seat, and the switch element is mounted on the sealing cover; The sealing portion has a first side surface and a second side surface that are opposite to each other. A sealing protrusion is formed on the first side surface of the sealing portion. A second sealing groove is provided on the end of the mounting seat that is away from the low-pressure storage chamber. The sealing protrusion is sealed with the second sealing groove. An elastic rib is formed on the second side surface of the sealing portion.

9. The refrigerator according to claim 8, characterized in that: One end of the sealing portion away from the deformation portion is bent and extended away from the sealing cover to form a sealing flange, the sealing flange is sleeved on the outer side of the mounting seat, and the sealing cover is formed with a sealing side surface, and the sealing flange is sealed between the sealing side surface and the mounting seat.

10. A refrigerator, characterized in that: include: A box body, a low-pressure storage structure, an air extraction device and a trigger switch, wherein the box body structure forms a storage compartment; The low-pressure storage structure is installed in the storage room and is constructed to form a low-pressure storage room; A mounting seat is formed on the low-pressure storage structure, and a receiving groove is formed on the mounting seat. The bottom wall of the receiving groove is provided with a vent hole connecting the receiving groove and the low-pressure storage chamber; the exhaust device is connected to the low-pressure storage chamber and is used to extract the air in the low-pressure storage chamber; the trigger switch includes two sealing members, which are respectively used to seal the end of the mounting seat and the vent hole.

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