Locking structure and filtering device

Abstract

The utility model provides a locking structure and a filtering device. The locking structure comprises a mounting base body; the locking piece is rotatably arranged on the mounting base body, the locking piece is provided with a first locking part, the first locking part is provided with a first station used for being matched with a second locking part on the filter element so as to limit the filter element on the mounting base body, and the first locking part is further provided with a second station separated from the second locking part so as to limit the filter element on the mounting base body; the locking piece rotates upwards to enable the first locking part to be switched to the first station from the second station, and the locking piece rotates downwards to enable the first locking part to be switched to the second station from the first station. According to the technical scheme, the filter element can be unlocked by shifting the locking piece to rotate upwards relative to the mounting base body, the filter element can be locked by shifting the locking piece to rotate downwards relative to the mounting base body, unlocking and locking can be achieved only by shifting the locking piece to rotate, unlocking and locking operation is simple, and the unlocking and locking efficiency can be improved.

Description

Technical Field

[0001] This application relates to the field of water purification technology, and particularly to a locking structure and a filtering device. Background Art

[0002] A filtering device is a device that filters and purifies raw water through a filter element to meet the drinking water standard. Among them, the filter element in the filtering device generally has a certain service life, and users need to regularly replace the filter element that has reached the service life. Therefore, it is required that the installation structure of the filter element is convenient to disassemble on the one hand and firmly and reliably installed on the other hand.

[0003] Currently, the filtering devices on the market generally lock the filter element in the following way: The casing is provided with an installation cavity, a lock catch and a push rod on one side of the top opening of the installation cavity. The lock catch is movably arranged, and an elastic reset device is arranged between the lock catch and the casing. The lock catch is provided with a lock catch driving part. The push rod is movably arranged. The lock catch driving part can be lifted under the drive of the push rod. The filter element is detachably arranged in the installation cavity. The filter element is hinged with a handle. The handle is provided with a limiting groove. The limiting groove is engaged with the lock catch to limit the filter element in the installation groove. The handle can rotate between a retracted position and a pulling position. Among them, when the handle is in the pulling position, a pulling force parallel to the insertion direction of the filter element can be applied. The handle contacts the force receiving end of the push rod, and the contact surfaces in contact with each other are wedge-shaped inclined surfaces that cooperate with each other. So that when the handle is in the retracted position, the wedge-shaped inclined surfaces contact each other. When rotating towards the pulling position, the push rod is driven to move along the length direction of the lock catch through the cooperation of the wedge-shaped inclined surfaces to lift the lock catch driving part, so that the lock catch is disengaged from the limiting groove, and the restriction on the filter element is released. Then the filter element is pulled out of the casing. However, when unlocking the filter element, it is necessary to first drive the push rod to move through the handle, and then lift the lock catch driving part through the push rod to unlock the filter element. The unlocking operation is relatively cumbersome and the unlocking efficiency is low. Summary of the Utility Model

[0004] The embodiments of this application provide a locking structure and a filtering device to solve the problem of relatively cumbersome unlocking operation in the related art. The technical solutions are as follows:

[0005] In the first aspect, the embodiments of this application provide a locking structure, including:

[0006] An installation base;

[0007] A locking member, which is rotatably arranged on the mounting base body. The locking member is provided with a first locking portion. The first locking portion has a first working position for cooperating with a second locking portion on the filter element to restrict the filter element on the mounting base body. The first locking portion further has a second working position for disengaging from the second locking portion, so that the filter element can be disengaged from the mounting base body. The locking member rotates upward to switch the first locking portion from the second working position to the first working position, and the locking member rotates downward to switch the first locking portion from the first working position to the second working position.

[0008] In one embodiment, the locking structure further includes:

[0009] An elastic reset member, one end of the elastic reset member is connected to the mounting base body, and the other end of the elastic reset member is connected to the locking member. The elastic reset member is used to provide a driving force to the locking member to restrict the first locking portion in the first working position.

[0010] In one embodiment, the first locking portion has a locking groove, and the second locking portion is provided with a locking protrusion. The locking protrusion cooperates with the locking groove to restrict the first locking portion in the first working position.

[0011] In one embodiment, the second locking portion is further provided with a limiting protrusion, and the limiting protrusion abuts against the first locking portion to restrict the locking protrusion in the locking groove.

[0012] In one embodiment, a guiding inclined surface is provided at the top of the first locking portion. The guiding inclined surface is used to cooperate with the second locking portion to guide the second locking portion to cooperate with the first locking portion.

[0013] In one embodiment, the mounting base body is provided with a first positioning inclined surface, and the locking member is provided with a second positioning inclined surface. The second positioning inclined surface abuts against the first positioning inclined surface to restrict the first locking portion in the first working position.

[0014] In one embodiment, the locking member is further provided with an arc surface. The arc surface is connected to the second positioning inclined surface and is arranged around the rotation center line of the locking member. The arc surface is movably matched with the first positioning inclined surface to guide the rotation of the locking member.

[0015] In one embodiment, the mounting base body is provided with a first connecting protrusion;

[0016] The locking member has a first connecting hole, and the first connecting hole is rotatably matched with the first connecting protrusion, so that the locking member can rotate relative to the mounting base body.

[0017] In one embodiment, the mounting base is further provided with a second connecting protrusion, and the second connecting protrusion is arranged around the first connecting protrusion;

[0018] The locking member further has a second connecting hole, which is arranged around the first connecting hole, and the second connecting hole is rotatably matched with the second connecting protrusion.

[0019] In one embodiment, the mounting base comprises:

[0020] An installation body, wherein the installation body has a receiving groove and a mounting opening, the receiving groove receives the locking member, the mounting opening is arranged opposite to the bottom wall of the receiving groove, the mounting opening is connected to the receiving groove, the mounting opening allows the locking member to enter and exit the receiving groove, and the inner end of the first connecting protrusion is connected to the bottom wall of the receiving groove;

[0021] A cover plate is arranged on the installation body, the cover plate covers the installation opening to limit the locking member in the accommodating groove, and the cover plate has a positioning hole, and the positioning hole cooperates with the outer end of the first connecting protrusion.

[0022] In a second aspect, an embodiment of the present application provides a filtering device, comprising the above-mentioned locking structure.

[0023] The advantages or beneficial effects of the above technical solution include at least:

[0024] The locking structure of the utility model has a locking piece that is rotatably arranged on the mounting base, and the locking piece is provided with a first locking portion, and the first locking portion has a first position that can cooperate with the second locking portion on the filter element to lock the filter element to restrict the filter element to the mounting base. The first locking portion also has a second position that is disengaged from the second locking portion to unlock the filter element so that the filter element can be separated from the mounting base. The locking piece is rotated upward to switch the first locking portion from the second position to the first position, and the locking piece is rotated downward to switch the first locking portion from the first position to the second position. That is to say, the filter element can be unlocked by rotating the locking piece upward relative to the mounting base, and the filter element can be locked by rotating the locking piece downward relative to the mounting base. Whether it is unlocking or locking, it only needs to rotate the locking piece. The unlocking and locking operations are simple, and the unlocking and locking efficiency can be improved.

[0025] The above summary is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present application will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the several views denote the same or similar components or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings merely depict some embodiments disclosed in the present application and should not be regarded as limiting the scope of the present application.

[0027] Figure 1 It is a schematic perspective view of the locking structure of the present utility model from the first perspective;

[0028] Figure 2 It is a schematic perspective view of the locking structure of the present utility model from the second perspective;

[0029] Figure 3 It is a schematic perspective view of the locking structure of the present utility model from the third perspective;

[0030] Figure 4 It is an exploded view of the locking structure of the present utility model;

[0031] Figure 5 It is a schematic partial view of the mounting body in the present utility model;

[0032] Figure 6 It is a schematic perspective view of the elastic reset member in the present utility model;

[0033] Figure 7 It is a schematic perspective view of the locking member in the present utility model.

[0034] Reference Numerals

[0035] 1. Mounting base; 11. Mounting body; 111. First hanging portion; 1111. Hanging main body; 1112. Limiting main body; 112. First positioning inclined surface; 113. First connecting protrusion; 114. Second connecting protrusion; 115. Accommodating groove; 116. Threaded hole; 12. Cover plate; 121. Positioning hole; 122. Third connecting hole; 2. Locking member; 21. First locking portion; 211. Locking groove; 22. Second hanging portion; 221. Hanging hole; 23. Second positioning inclined surface; 24. Arc surface; 25. First connecting hole; 3. Elastic reset member; 31. First hook; 32. Second hook; 33. Spring; 4. Filter element; 41. Second locking portion; 411. Locking protrusion; 412. Limiting protrusion; 42. Handle. Detailed Embodiments

[0036] In the following, only some exemplary embodiments are briefly described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present application. Therefore, the drawings and the description are regarded as being exemplary in nature rather than restrictive.

[0037] See also Figures 1 - 7 , shows a locking structure of a preferred embodiment of the utility model, comprising:

[0038] Mounting base 1;

[0039] The locking member 2 is rotatably disposed on the mounting base 1. The locking member 2 is provided with a first locking portion 21. The first locking portion 21 has a first position for cooperating with the second locking portion 41 on the filter element 4 to restrict the filter element 4 to the mounting base 1. The first locking portion 21 also has a second position that is disengaged from the second locking portion 41 so that the filter element 4 can be separated from the mounting base 1. The locking member 2 is rotated upward to switch the first locking portion 21 from the second position to the first position. The locking member 2 is rotated downward to switch the first locking portion 21 from the first position to the second position.

[0040] The locking structure of the utility model has the following advantages: since the locking member 2 is rotatably arranged on the mounting base 1, the locking member 2 is provided with a first locking portion 21, and the first locking portion 21 has a first position that can cooperate with the second locking portion 41 on the filter element 4, so as to lock the filter element 4 and restrict the filter element 4 to the mounting base 1; the first locking portion 21 also has a second position that is disengaged from the second locking portion 41, so as to unlock the filter element 4 so that the filter element 4 can be separated from the mounting base 1; the locking member 2 is rotated upward to switch the first locking portion 21 from the second position to the first position; the locking member 2 is rotated downward to switch the first locking portion 21 from the first position to the second position; that is, the filter element 4 can be unlocked by rotating the locking member 2 upward relative to the mounting base 1, and the filter element 4 can be locked by rotating the locking member 2 downward relative to the mounting base 1; whether it is unlocking or locking, it is only necessary to rotate the locking member 2; the unlocking and locking operations are simple, and the unlocking and locking efficiency can be improved.

[0041] See also Figures 2 - 4 In one embodiment, the locking structure further comprises:

[0042] The elastic reset member 3, one end of the elastic reset member 3 is connected to the mounting base 1, and the other end of the elastic reset member 3 is connected to the locking member 2. The elastic reset member 3 is used to provide a driving force to the locking member 2 to limit the first locking portion 21 to the first working position. Thus, in use, by applying a rotational force to the locking member 2 in the direction of stretching the elastic reset member 3, the locking member 2 can be disconnected from the filter element 4 to unlock the filter element 4. After releasing the locking member 2, the locking member 2 can automatically reset to the state of cooperating with the filter element 4 under the action of the driving force to lock the filter element 4, thereby fixing the filter element 4 on the mounting base 1. The disassembly and assembly operation of the filter element 4 is simple and convenient, the disassembly and assembly efficiency is high, and it is convenient to replace the filter element 4. In addition, the elastic reset member 3 only deforms when the locking member 2 needs to rotate and does not deform when the locking member 2 does not rotate, so the service life is longer.

[0043] See Figures 4 - 5 , in an embodiment, the mounting base 1 is provided with a first hanging portion 111, the locking member 2 is provided with a second hanging portion 22, one end of the elastic reset member 3 is provided with a first hook 31, and the other end of the elastic reset member 3 is provided with a second hook 32. The first hook 31 is hung on the first hanging portion 111 to connect the elastic reset member 3 with the mounting base 1, restricting the elastic reset member 3 from detaching from the mounting base 1 during the rotation of the locking member 2, improving the connection stability and reliability between the elastic reset member 3 and the mounting base 1. The second hook 32 is hung on the second hanging portion 22 to connect the elastic reset member 3 with the locking member 2, restricting the elastic reset member 3 from detaching from the locking member 2 during the rotation of the locking member 2, improving the connection stability and reliability between the elastic reset member 3 and the locking member 2. In addition, during installation, directly hanging the first hook 31 on the first hanging portion 111 and hanging the second hook 32 on the second hanging portion 22 can realize mounting the elastic reset member 3 at the set position. The installation operation is simple and the installation efficiency is high.

[0044] See Figures 4 - 5, in one embodiment, the first hanging portion 111 is provided with a hanging main body 1111 and a limiting main body 1112. The inner end of the hanging main body 1111 is connected to the mounting base 1. The first hook 31 is disposed around the hanging main body 1111 so that the first hook 31 can be hung on the first hanging portion 111. The limiting main body 1112 is disposed at the outer end of the hanging main body 1111. The limiting main body 1112 protrudes relative to the surface of the hanging main body 1111 where it is connected to the first hook 31. The limiting main body 1112 can abut against the first hook 31 to limit the first hook 31 on the hanging main body 1111. In this way, during installation, by hanging the first hook 31 on the hanging main body 1111, the elastic reset member 3 can be connected to the mounting base 1. The installation operation is simple and more convenient. At the same time, since the inner end of the hanging main body 1111 is connected to the mounting base 1 and the outer end of the hanging main body 1111 is connected to the limiting main body 1112, the mounting base 1 and the limiting main body 1112 can be used to limit the first hook 31 to prevent the first hook 31 from detaching from the hanging main body 1111, so that the elastic reset member 3 and the mounting base 1 are reliably connected together, and the connection stability is higher.

[0045] In other embodiments, the first hanging portion 111 may also be provided with a through hole for the first hook 31 to pass through, so that the first hook 31 can be hung on the first hanging portion 111, and the elastic reset member 3 and the mounting base 1 can also be reliably connected together.

[0046] See Figure 4 and Figure 7 , in one embodiment, the second hanging portion 22 has a hanging hole 221 for the second hook 32 to pass through so that the second hook 32 can be hung on the second hanging portion 22. In this way, by passing the second hook 32 through the hanging hole 221 and hanging it on the second hanging portion 22, the elastic reset member 3 and the locking member 2 can be reliably connected together, and the installation operation is simple and more convenient.

[0047] Specifically, both ends in the length direction of the second hanging portion 22 are connected to the locking member 2, and the second hanging portion 22 and the locking member 2 enclose the hanging hole 221.

[0048] In other embodiments, the second hanging portion 22 may specifically be provided with a hanging main body 1111 and a limiting main body 1112. The inner end of the hanging main body 1111 is connected to the locking member 2, and the outer end of the hanging main body 1111 is connected to the limiting main body 1112. The second hook 32 is hung on the hanging main body 1111, and the second hook 32 is limited by the locking member 2 and the limiting main body 1112 to be restricted on the hanging main body 1111, ensuring that the elastic reset member 3 and the locking member 2 are reliably connected together.

[0049] SeeFigure 4 and Figure 6 In one embodiment, the elastic reset member 3 is further provided with a spring 33. One end of the spring 33 extends outwardly and bends to form a first hook 31, and the other end of the spring 33 extends outwardly and bends to form a second hook 32. The spring 33 has better elastic performance, which can enable the elastic reset member 3 to reliably maintain the state of applying a driving force to the locking member 2, so that the locking member 2 can be reset smoothly and durably.

[0050] In other embodiments, a shrapnel can be used to replace the above-mentioned spring 33, which can also apply a driving force to the locking member 2 to ensure that the locking member 2 can be reset.

[0051] In other embodiments, one end of the elastic reset member 3 can also be abutted against the mounting base 1, and the other end of the elastic reset member 3 can also be abutted against the locking member 2.

[0052] In other embodiments, one end of the elastic reset member 3 can also be welded to the mounting base 1, and the other end of the elastic reset member 3 can also be welded to the locking member 2.

[0053] In other embodiments, an electric drive structure can be used to replace the elastic reset member 3. The electric drive structure can specifically be any one of an electric push rod, a cylinder, etc.

[0054] See Figure 5 and Figure 7 In one embodiment, the first locking portion 21 has a locking groove 211, and the second locking portion 41 is provided with a locking projection 411. The locking projection 411 cooperates with the locking groove 211 to limit the first locking portion 21 to the first working position. By the cooperation of the locking groove 211 and the locking projection 411, the contact area between the first locking portion 21 and the second locking portion 41 can be increased, the connection stability and reliability between the locking member 2 and the filter element 4 can be improved, and further the filter element 4 can be reliably locked to the mounting base 1.

[0055] See Figure 5 In one embodiment, the second locking portion 41 is further provided with a limiting projection 412. The limiting projection 412 abuts against the first locking portion 21 to limit the locking projection 411 in the locking groove 211, so that the first locking portion 21 and the second locking portion 41 cooperate reliably, and the locking reliability of the filter element 4 can be improved.

[0056] In other embodiments, the first locking portion 21 can be provided with the above-mentioned locking projection 411, while the second locking portion 41 can be provided with the above-mentioned locking groove 211.

[0057] In other embodiments, among the first locking portion 21 and the second locking portion 41, one is provided with a first locking protrusion, and the other is provided with a second locking protrusion. The second locking protrusion cooperates with the first locking protrusion, and the filter element 4 can also be locked.

[0058] Refer to Figure 2 , in one embodiment, the mounting base 1 is provided with a first positioning inclined surface 112, and the locking member 2 is provided with a second positioning inclined surface 23. The second positioning inclined surface 23 abuts against the first positioning inclined surface 112 to limit the rotation of the locking member 2, so as to limit the first locking portion 21 to the first working position, thereby realizing reliable locking of the filter element 4 and improving the structural stability and reliability.

[0059] Refer to Figure 3 , in one embodiment, the locking member 2 is further provided with an arc surface 24. The arc surface 24 is connected to the second positioning inclined surface 23, and the arc surface 24 is arranged around the rotation center line of the locking member 2. The arc surface 24 is movably matched with the first positioning inclined surface 112 to guide the rotation of the locking member 2. In this way, during the rotation of the locking member 2, the first positioning inclined surface 112 is disconnected from the second positioning inclined surface 23 as the locking member 2 rotates. At the same time, the arc surface 24 is movably matched with the second positioning inclined surface 23 to guide the locking member 2 to rotate in the direction of the tensile elastic reset member 3 or in the direction of the elastic reset member 3 to reset, playing a role of rotation guiding, making the rotation of the locking member 2 smoother, and thus improving the smoothness of the locking and unlocking operations of the filter element 4.

[0060] Refer to Figures 4 - 5 and Figure 7 , in one embodiment, the mounting base 1 is provided with a first connecting protrusion 113;

[0061] The locking member 2 has a first connecting hole 25. The first connecting hole 25 is rotatably matched with the first connecting protrusion 113, so that the locking member 2 can rotate relative to the mounting base 1. In this way, during installation, by matching the first connecting hole 25 with the first connecting protrusion 113, the locking member 2 can be rotatably installed on the mounting base 1. The installation operation is simple, the installation efficiency is high, and the rotation connection structure composed of the first connecting protrusion 113 and the first connecting hole 25 is simple and practical, with low cost.

[0062] In one embodiment, the mounting base 1 is further provided with a second connecting protrusion 114. The second connecting protrusion 114 is arranged around the first connecting protrusion 113;

[0063] The locking member 2 further has a second connecting hole. The second connecting hole is arranged around the first connecting hole 25. The second connecting hole is rotatably matched with the second connecting protrusion 114. By matching the second connecting hole with the second connecting protrusion 114, the rotation stability of the locking member 2 can be improved, making the rotation of the locking member 2 smoother.

[0064] See Figures 4 - 5 , in one embodiment, the mounting base 1 includes:

[0065] A mounting body 11, the mounting body 11 has a receiving groove 115 and a mounting opening. The receiving groove 115 receives the locking member 2. The mounting opening is disposed opposite to the bottom wall of the receiving groove 115. The mounting opening communicates with the receiving groove 115 for the locking member 2 to enter and exit the receiving groove 115. The inner end of the first connecting protrusion 113 is connected to the bottom wall of the receiving groove 115;

[0066] A cover plate 12, the cover plate 12 is disposed on the mounting body 11. The cover plate 12 covers the mounting opening to limit the locking member 2 in the receiving groove 115. The cover plate 12 has a positioning hole 121, and the positioning hole 121 cooperates with the outer end of the first connecting protrusion 113. Thus, during installation, the second hook 32 is hooked to the second hooking portion 22. By disposing the locking member 2 in the receiving groove 115 and connecting it to the first connecting protrusion 113, and at the same time hooking the first hook 31 to the first hooking portion 111, and then mounting the cover plate 12 on the mounting body 11, the installation of the locking member 2 and the elastic reset member 3 can be completed. The cover plate 12 and the bottom wall of the receiving groove 115 jointly limit the locking member 2 and the elastic reset member 3, and limit the locking member 2 and at least part of the elastic reset member 3 in the receiving groove 115, improving the connection stability and reliability between the locking member 2 and the mounting base 1. At the same time, it also improves the connection stability and reliability between the elastic reset member 3 and the locking member 2 and between the elastic reset member 3 and the mounting base 1. In addition, during installation, by the cooperation of the positioning hole 121 and the outer end of the first connecting protrusion 113, the installation positioning of the cover plate 12 can be realized, facilitating the quick and correct installation of the cover plate 12 on the mounting body 11 and improving the installation efficiency.

[0067] In one embodiment, the mounting body 11 has a mounting cavity, and the mounting cavity penetrates through the top of the mounting body 11 and forms an opening;

[0068] The filter element 4 is detachably disposed in the mounting cavity, and the filter element 4 vertically enters and exits the mounting cavity through the opening;

[0069] Both the locking member 2 and the elastic reset member 3 are located on the side close to the opening. The locking member 2 cooperates with the top of the filter element 4 to reliably lock the filter element 4 in the mounting cavity, so that the filter element 4 and the mounting base 1 are reliably fixed together, and the structural stability and reliability are higher.

[0070] In one embodiment, the mounting body 11 is provided with a plurality of threaded holes 116, and the plurality of threaded holes 116 are arranged around the receiving groove 115;

[0071] The cover body is provided with a plurality of third connection holes 122 , and each of the third connection holes 122 is connected to a threaded hole 116 through a screw in a one-to-one correspondence, so as to reliably connect the installation body 11 and the cover plate 12 together.

[0072] In other embodiments, the mounting body 11 and the cover plate 12 may also be connected together by any one or a combination of a snap-on method, a magnetic fit method, etc.

[0073] See also Figures 1 - 4 , shows a filtering device of a preferred embodiment of the utility model, including the above-mentioned locking structure.

[0074] The filtering device of the present invention adopts the above-mentioned locking structure, and the filter element 4 can be unlocked by turning the locking piece 2 upward relative to the mounting base 1, and the filter element 4 can be locked by turning the locking piece 2 downward relative to the mounting base 1. Whether unlocking or locking, it is only necessary to turn the locking piece 2, and the unlocking and locking operations are simple, which can improve the unlocking and locking efficiency.

[0075] In one embodiment, a handle 42 is rotatably provided on the top of the filter element 4. The handle 42 has a first position vertically placed on the top of the filter element 4, so that the user can pull the filter element 4 out of the installation cavity by carrying the handle 42. The handle 42 also has a second position horizontally placed on the top of the filter element 4, so that the handle 42 can be stored and placed on the filter element 4. The handle 42 is rotated to switch between the first position and the second position. The handle 42 is provided with a locking portion. When the filter element 4 is arranged in the installation cavity and the handle 42 is in the second position, the locking portion cooperates with the locking groove 211 to lock the filter element 4 in the installation cavity.

[0076] The locking member 2 is rotated by the locking portion, so that when the filter element 4 is inserted into the installation cavity, the locking portion and the locking member 2 can be abutted against each other to push the locking member 2 to rotate in the direction of stretching the elastic reset member 3 until the locking portion is engaged with the locking groove 211. In the process of pulling the filter element 4 out of the installation cavity, the filter element 4 is lifted by the carrying handle 42, and the locking portion pushes up the locking member 2 until the locking portion is disengaged from the locking groove 211. The filter element 4 can be unlocked and removed by lifting the handle 42 with one hand, which saves more effort. At the same time, the locking member 2 can be driven to rotate by the handle 42, so that the locking member 2 can be rotated during the process of installing the filter element 4 to make the locking member 2 avoid the locking portion, and the locking member 2 can be rotated to unlock the filter element 4 during the process of pulling out the filter element 4, thereby improving the utilization rate of the handle 42 and making the replacement of the filter element 4 more convenient.

[0077] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0078] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, "a plurality" means two or more unless otherwise specifically defined.

[0079] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application can easily think of various changes or substitutions, and these should all be covered within the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. The locking structure is characterized in that: include: Install the substrate; A locking member, wherein the locking member is rotatably disposed on the mounting base, the locking member is provided with a first locking portion, the first locking portion having a first position for cooperating with a second locking portion on a filter element to restrict the filter element to the mounting base, the first locking portion also having a second position for disengaging from the second locking portion to enable the filter element to be detached from the mounting base, the locking member is rotated upward to switch the first locking portion from the second position to the first position, and the locking member is rotated downward to switch the first locking portion from the first position to the second position.

2. The locking structure according to claim 1, characterized in that: The locking structure also includes: An elastic return member, one end of which is connected to the mounting base, and the other end of which is connected to the locking member, and the elastic return member is used to provide a driving force to the locking member to limit the first locking portion to the first station.

3. The locking structure according to claim 1, characterized in that: The first locking portion has a locking groove, and the second locking portion is provided with a locking protrusion, and the locking protrusion cooperates with the locking groove to restrict the first locking portion to the first station.

4. The locking structure according to claim 3, characterized in that: The second locking portion is further provided with a limiting protrusion, and the limiting protrusion abuts against the first locking portion to limit the locking protrusion in the locking groove.

5. The locking structure according to claim 1, characterized in that: The mounting base is provided with a first positioning inclined surface, and the locking member is provided with a second positioning inclined surface, and the second positioning inclined surface abuts against the first positioning inclined surface to limit the first locking portion to the first station.

6. The locking structure according to claim 5, characterized in that: The locking member is further provided with an arcuate surface, which is connected to the second positioning inclined surface and is arranged around the rotation center line of the locking member. The arcuate surface and the first positioning inclined surface can be movably matched to guide the rotation of the locking member.

7. The locking structure according to claim 1, characterized in that: The mounting base is provided with a first connecting protrusion; The locking member has a first connecting hole, and the first connecting hole is rotatably matched with the first connecting protrusion so that the locking member can rotate relative to the installation base.

8. The locking structure according to claim 7, characterized in that: The mounting base is further provided with a second connecting protrusion, and the second connecting protrusion is arranged around the first connecting protrusion; The locking member further has a second connecting hole, which is arranged around the first connecting hole, and the second connecting hole is rotatably matched with the second connecting protrusion.

9. The locking structure according to claim 7, characterized in that: The mounting base comprises: An installation body, wherein the installation body has a receiving groove and a mounting opening, the receiving groove receives the locking member, the mounting opening is arranged opposite to the bottom wall of the receiving groove, the mounting opening is connected to the receiving groove, the mounting opening allows the locking member to enter and exit the receiving groove, and the inner end of the first connecting protrusion is connected to the bottom wall of the receiving groove; A cover plate is arranged on the installation body, the cover plate covers the installation opening to limit the locking member in the accommodating groove, and the cover plate has a positioning hole, and the positioning hole cooperates with the outer end of the first connecting protrusion.

10. A filtering device, characterized in that: The invention comprises the locking structure according to any one of claims 1 to 9.

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