CN111841129A

CN111841129A - Capping device of water purifier with upper control module and lower filter container bin

Info

Publication number: CN111841129A
Application number: CN201910529899.9A
Authority: CN
Inventors: 不公告发明人
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-04-28
Filing date: 2019-06-19
Publication date: 2020-10-30
Anticipated expiration: 2039-06-19
Also published as: CN111841129B

Abstract

The invention relates to the water treatment industry, in particular to drinking water filtration. The invention discloses a capping device of a water purifier provided with an upper control module and a lower filter liner bin. Comprises a filter liner, a water passing pipeline, a control component, a lower filter liner bin, an upper control module and a loose joint device; the water passing pipeline is connected with a plurality of filter liners and a water passing control component to form a filter channel; the upper control module and the lower filter liner bin are connected into a whole through a loose joint device; the device also comprises a plurality of plugboards with same-direction plugtongues and draw bars, a sealing cover device with a plugboard interlayer arranged inside, a coupling with a swing rod, a swing shaft, a rear connecting structure and a radial swing rod, a swing handle mechanism with an inclined guide structure, and a downward pressing structure which is in splicing fit with the plugtongues and is arranged on an upper matching part and a lower matching part of the sealing cover device; the swing rod drives the swing shaft and the coupler to swing, the radial swing rod drives the inserting plate to move axially under the action of the inclined guide rail, and the inserting tongue is inserted below the downward pressing structure to insert the cover sealing device and the parts matched with the cover sealing device up and down.

Description

Capping device of water purifier with upper control module and lower filter container bin

Prior application title: capping device of water purifier with upper control module and lower filter container bin

Prior application No.: 201910381928.1

Technical Field

The invention relates to the water treatment industry, in particular to the aspects of deep filtration and purification of drinking water.

Background

As a consumable of the water purifier, the filter liner needs to be replaced after being used for a period of time. However, with the popularization of water purifiers, the defects and shortcomings of the water purifiers in application are gradually exposed: the middle and low-price water purifiers mostly adopt an open type inner container configuration bare machine mode. The shell with the built-in liner is hung on the machine structure below the base, and although the shell can be reused, the cost of replacing the filter liner by a consumer is correspondingly reduced by 10-20%, the problems of single product structure, difficult liner replacement, difficult cleaning of a filter cavity and the like are correspondingly generated. Generally, a water purifier with an open filter cartridge arranged at the bottom is directly placed in a kitchen cabinet through a shell with an internal liner, the water purifier needs to be taken out and erected when the internal liner is replaced, then the special filter liner is pulled to be sleeved on the shell from bottom to top, and the shell can be detached by forcibly rotating the special filter liner to loosen the threaded connection between the shell and a machine base. After the new inner container is replaced, the shell with the inner container is screwed down below the machine base by force, and the whole operation process is very laborious. Since the water purifier filled with water is heavy and the built-in filter liner in the open type filter cartridge is poured out together with water after the filter cartridge is detached, the water pollution treatment is very troublesome, and a case of cleaning the inner cavity of the filter cartridge is very rare at present. Moreover, because the inner container is placed in the filter cartridge, water leakage is easy to occur carelessly during replacement. As for the horizontal water purifier, the use is very convenient: can be placed on the table-board of a kitchen cabinet and can also be placed in the cabinet; the machine is directly placed on the use position without punching and hanging the machine. Because the filter liner is positioned above the machine base, the filter liner is convenient to replace, and time and labor are saved relatively. But the biggest difficult problem of adopting seat formula water purifier structure lies in that the machine operation face is little, and display element and operation control device can only set up on the machine side facade, and the top surface is used for changing the filter liner, and the water control part has no place to put moreover. Since the water purifier has limited length and width dimensions, generally less than 500 mm × 200 mm × 450 mm, the installation of the display control device on the side vertical surface of the machine affects the number of the filter cartridges. When the closed filter container is used, the water port of the filter container faces downwards, so that water in the filter container can flow out from the water port of the filter container to pollute the surrounding environment during replacement. The water in the front and back filter containers is discharged from the inlet and outlet pipes of the base until the water level in the water purifier is balanced, so that the water purifier with the base has the advantages of easy extraction of filter containers, but the mode is rarely adopted. When the internal filter container of the open type filter cartridge is used, the internal filter container in the existing open type filter cartridge is poured out together with water after the filter cartridge is detached, the operation is very troublesome, and a case of cleaning the inner cavity of the filter cartridge is very rare. Because the environment for placing the water purifier is usually poor, the water flow speed leaking in the process of replacing the filter liner is too fast and is not easy to remove, thus not only causing inconvenient operation, but also causing the cabinet to be soaked and even damaging the cabinet plate. In view of the fact that the replacement of the filter cartridge is always accompanied by the entire process of use of the water purifier, the problems associated with the replacement of the filter cartridge and the cleaning of the filter passage are often repeated. In addition, the scaling phenomenon of the filter cartridge and the inner wall of the pipeline of the water purifier is very serious after the water purifier is used for a long time, and the water purifying treatment environment of the water purifier is increasingly poor. Especially, the problems of cleaning the inner cavity of the U-shaped open type filter cylinder, discharging sewage containing a large amount of impurities and extracting the built-in filter liner are not solved, so that a machine type with a lower machine base is rarely adopted. On the other hand, the replacement of the filter liner and the cleaning maintenance of the water purifier require professional personnel to go to the home, which is labor-consuming and time-consuming, but the charging is not high, and the professional personnel are reluctant to provide the home cleaning service due to lack of cleaning means, so that the problem of machine cleaning is rarely mentioned to users. So that most users only know to replace the filter cartridge, but few know to regularly clean the machine. The above-mentioned drawbacks and disadvantages make it difficult to widely popularize the water purifier.

Disclosure of Invention

The invention mainly solves the technical problem of providing a simple and practical capping device of a water purifier provided with an upper control module and a lower filter container cabin, so as to overcome the defects and shortcomings.

A capping device of a water purifier provided with an upper control module and a lower filter liner bin comprises a filter liner, a water passing pipeline, a control component, a lower filter liner bin provided with an upper bin port and used for placing and fixing the filter liner, an upper control module used for placing the control component and a loose joint device; the control part is a water passing control part or an electric control part or a combined device of the water passing control part and the electric control part; the water passing pipeline is connected with a plurality of filter liners and a water passing control component to form a filter channel; an upper control module integrated with the lower filter container bin by upper and lower insertion matching and connecting the lower filter container bin through a loose joint device, or a U-shaped control module provided with a U-shaped base, or a plate-shaped control module arranged in the lower filter container bin and positioned above the filter container, or a U-shaped control module arranged in the lower filter container bin and positioned above the filter container, and is characterized by also comprising a plurality of insertion tongues and insertion rods arranged in the insertion space and in the same insertion direction, a cover sealing device formed by connecting a top cover and a cover plate at a fixed distance into a whole through screws to form an interlayer of the built-in insertion plate, a swinging rod and a shaft seat provided with a swinging shaft, a shaft coupling provided with a driving part, a rear connecting structure and a radial swinging rod, a swinging mechanism formed by an inclined guide structure for controlling the axial movement of the shaft coupling, and a vertical side wall arranged on the U-shaped control module or the vicinity of the upper end bin opening of the lower filter container bin, and the pressing structure is arranged above the corresponding inserting tongue and is in inserting fit with the inserting tongue; arrange the driving medium of shaft coupling input on the axle bed in or directly or through the drive mechanism of establishing in addition with the swing arm linkage cooperation to two parts keep the swing linkage in the within range that the shaft coupling produced axial displacement, the draw structure swing joint cooperation that hookup structure and picture peg set up afterwards: the coupler swings along with the swing rod and is in contact fit with the inclined guide rail of the inclined guide structure through a radial swing rod of the coupler and drives the plugboards to be axially linked; the cover sealing device is matched with the U-shaped control module or the lower filter liner bin up and down, the oscillating rod drives the coupler to oscillate in the forward direction, the radial oscillating rod generates axial component force under the guiding action of the forward inclined guide rail in front of the oscillation in the oscillating process along with the coupler to drive the coupler and the inserting plate to move in the forward direction in the axial direction, the inserting tongue is inserted into the position below the lower pressing structure, namely, the inserting position is located, the upper end surface of the inserting tongue is in contact fit with the lower end surface of the lower pressing structure, and the cover sealing device is connected with the U-shaped control module or the lower filter liner bin into a whole; the swing control end swings reversely to force the radial swing rod to generate opposite axial component force under the guiding action of the reverse inclined guide rail in front of swing in the process of swinging reversely along with the coupler to drive the coupler and the inserting plate to move reversely in the axial direction, the inserting tongue moves back to a position which is not inserted below the downward pressing structure, namely, is positioned in the inserting vacant position, and then the cover sealing device is separated from the U-shaped control module or the lower filter liner bin up and down.

A capping device of a water purifier provided with an upper control module and a lower filter liner bin comprises a filter liner, a water passing pipeline, a control component, a lower filter liner bin provided with an upper bin port and used for placing and fixing the filter liner, an upper control module used for placing the control component and a loose joint device; the control part is a water passing control part or an electric control part or a combined device of the water passing control part and the electric control part; the water passing pipeline is connected with a plurality of filter liners and a water passing control component to form a filter channel; an upper control module which is matched with the lower filter container bin in an up-and-down inserting way and is connected with the lower filter container bin through a loose joint device to form an integral body, or a U-shaped control module provided with a U-shaped base, or a plate-shaped control module which is arranged in the lower filter container bin and is positioned above the filter container, or a U-shaped control module which is arranged in the lower filter container bin and is positioned above the filter container, and is characterized by also comprising a plurality of inserting tongues and inserting rods which are arranged in an inserting space and in the same inserting direction, a cover sealing device which is formed by connecting a top cover and a cover plate at a fixed distance into a whole through screws to form an interlayer of the built-in inserting plate, a swinging rod and a shaft seat which are provided with a swinging shaft, a coupling which is provided with a driving part and a rear connecting structure, a radial swinging rod and a return spring, a swinging mechanism which is formed by an inclined guide structure for controlling the axial movement of the coupling, and a vertical side wall which is arranged near, and the pressing structure is arranged above the corresponding inserting tongue and is in inserting fit with the inserting tongue; the transmission part of the input end of the shaft coupling arranged on the shaft seat is in linkage fit with the swing rod directly or through an additionally arranged transmission mechanism, the two parts keep swing linkage in the range of the axial displacement generated by the shaft coupling, and the rear connecting structure is in movable connection fit with the traction structure arranged on the inserting plate: the coupler swings along with the swing rod and is in contact fit with the inclined guide rail of the inclined guide structure through a radial swing rod of the coupler and drives the plugboards to be axially linked; two ends of the reset spring respectively act between the coupler and the sealing cover device; the cover sealing device is matched with the U-shaped control module or the lower filter liner bin up and down, and the radial swing rod is positioned at one end of the inclined guide rail under the action of the resilience force of the return spring; the oscillating rod drives the coupler to oscillate, so that the radial oscillating rod generates axial component force under the guiding action of the inclined guide rail in front of the oscillation in the oscillating process along with the coupler, and overcomes the resilience force of the return spring to move to the other end of the inclined guide rail; the plug board moves axially between two positions corresponding to the radial swing rod along with the coupler, the insertion tongue on the plug board or the position inserted below the downward pressing structure is located at the insertion position, the upper end face of the insertion tongue is in contact fit with the lower end face of the downward pressing structure, the sealing device and the U-shaped control module or the downward filter container bin are connected into a whole, or the sealing device is retreated to the position which is not inserted below the downward pressing structure and is located at the insertion vacancy, and then the sealing device and the U-shaped control module or the downward filter container bin are separated up and down.

The sealing device is either an internal sealing device or an external sealing device, wherein for the internal sealing device, the internal sealing device is matched with the side wall of the U-shaped control module inside and outside or matched with the side wall of the lower filter container cabin inside and outside; for the external sealing device, the external sealing device is matched with the side wall of the U-shaped control module in an outer way or an inner way, or is matched with the side wall of the lower filter container cabin in an outer way or an inner way.

The inclined guide structure is provided with a swing clamping structure at one end of the one-way inclined guide rail corresponding to the reset spring with larger compression distance, and the radial swing rod clamp swings into the clamping structure to form in-situ swing without axial displacement (the reset spring cannot reset), so that the plug tongue stays at the corresponding position.

The side wall of the U-shaped control module or the side wall of the lower filter liner bin is provided with a corresponding gap supporting structure aiming at the downward pressing structure, and the height difference between the upper end surface of the gap supporting structure and the lower end surface of the downward pressing structure corresponds to the thickness of the inserting tongue on the inserting plate; the notch supporting structure and the pressing structure are in a mode corresponding to the lower vertical homothetic position and the upper vertical homothetic position or in a mode corresponding to the lower vertical malposition and the upper vertical malposition, wherein for the mode corresponding to the lower vertical homothetic position and the upper vertical homothetic position of the notch supporting structure and the pressing structure, the notch supporting structure is positioned right below the pressing structure, and the vertical side wall where the two structures are positioned vertically shields the splicing position formed between the notch supporting structure and the pressing structure; for the mode corresponding to the lower and upper vertical dislocation of the notch supporting structure and the downward pressing structure, the vertical side wall where the notch supporting structure and the downward pressing structure are located vertically exposes the splicing vacancy and the splicing position; when the cover sealing device is matched with the U-shaped control module or the lower filter liner bin up and down, the inserting tongue of the inserting plate corresponds to the notch supporting structure; the swing mechanism drives the inserting plate to move transversely so that the inserting tongue is inserted into the lower position of the pressing structure and is positioned at the inserting position; the swing mechanism drives the plug board to move reversely so that the plug tongue returns to the plug vacant position.

The cover sealing device is an external cover sealing device; a boss structure is arranged on the outer side of the side wall of the U-shaped control module or the lower filter liner bin, and a mode that a notch supporting structure and a lower pressing structure are staggered and correspond to each other in the lower direction and the upper direction is adopted; the boss structure corresponds to the notch supporting structure on the upper part, and the side wall of the external sealing cover device shields the boss structure in a corresponding inserting position state.

The U-shaped base set up the interior handle structure of taking vertical lateral wall and upper end cover in left and right both sides to set up and push down structure and breach bearing structure in the combination department of the vertical lateral wall of interior handle structure and upper end cover structure, so that the below position that the tongue of inserting of picture peg transversely inserted upper end cover structure is in the grafting position promptly, and the up end of inserting the tongue and the terminal surface contact cooperation under the upper end cover.

Set up left and right swing mechanism and two picture peg that plug in opposite direction: a left insert plate and a right insert plate; aiming at each plugging position of the same U-shaped control module or the side wall of the lower filter tank bin, the left and right plug boards move in opposite plugging directions to enable plug tongues on the plug boards to move and plug into the plugging positions; the left and right plug boards respectively move reversely to make the plug tongues return to the plug vacant positions; the swing rods of the left swing mechanism and the right swing mechanism are respectively connected with another transverse handle to form a U-shaped swing handle; this U type swing handle drives two sets of balance staff and shaft coupling swings through left and right both ends swing arm (swinging arms) simultaneously to two slope guide structure control left and right picture pegs that set up through the mirror image move with opposite grafting direction: the inserting tongues on the left inserting plate and the right inserting plate are inserted into the inserting positions or withdrawn to the inserting vacant positions at the same time.

The swing rod is a U-shaped swing handle; the sealing device is provided with a step platform structure matched with the U-shaped swing handle; the step platform structure is arranged at the outer edge of the top cover of the sealing device or at the central position of the top cover of the sealing device; the shaft seat is hinged and matched with the swing shaft of the U-shaped swing handle, or is arranged on the vertical side walls of the steps at the left and right outer sides of the step platform structure at the outer edge position of the top cover of the sealing device, or is arranged on the vertical side walls of the steps at the left and right inner sides of the step platform structure at the central position of the top cover, and the U-shaped swing handle is subjected to swing limit by an additionally arranged swing limit structure; the interlayer is arranged below the step platform structure.

The inclined guide structure is provided with three control positions corresponding to the swinging of the U-shaped swinging handle and a related inclined guide rail for controlling the radial swing rod to swing among the three swinging control positions and move axially; the three control positions are, respectively, a first control position: the U-shaped swing handle is positioned at a horizontal position and the inserting tongue is positioned at a position corresponding to the inserting position; the second control position: the U-shaped swing handle is positioned at the inclined lifting position and the inserting tongue is positioned at the inserting vacant position; third control position: the U-shaped swing handle is positioned at a vertical position and the inserting tongue is positioned at a position corresponding to the inserting position; the U-shaped swing handle is linked with the coupler through a swing shaft connected with the U-shaped swing handle or linked with the coupler through a transition swing shaft arranged additionally or linked with the coupler through a linked swing shaft.

The clamping mechanism corresponds to the first control position and the second control position; the clamping mechanism is provided with two same convex structures or concave structures corresponding to the first and second control positions on the vertical side wall where the shaft seat is located, and is provided with a corresponding concave structure or convex structure at the side relevant position where the U-shaped swing handle is in swing fit with the vertical side wall, or is provided with a convex structure or concave structure on the vertical side wall where the shaft seat is located, and is provided with two same concave structures or convex structures corresponding to the first and second control positions at the side relevant position where the U-shaped swing handle is in swing fit with the vertical side wall; in the process that the U-shaped swinging handle without axial displacement drives the swinging shaft to swing in situ, concave structures or convex structures are arranged on the side faces of the swinging arms on the two sides of the U-shaped swinging handle and convex structures or concave structures are arranged on the vertical side walls of the U-shaped swinging handle and are respectively clamped and matched at the positions corresponding to the first control position and the second control position.

Compared with the existing water purifier, the invention has the following advantages: the machine has simple structure, stable assembly quality of control components and high efficiency; the disassembly and the assembly are easy and labor-saving; the machine has a double-layer structure, so that in a limited size space, an upper operation surface and an operation and maintenance window with a larger area are formed; meanwhile, the requirements of display control, part maintenance, filter liner replacement and respective functions are met, and the manufacturing requirements of a machine with simple structure and low cost are met; the user can open the upper cover by oneself and change the filter core, avoids inconvenience and service expenditure that the service arouses of going to the door by professional reservation, has correspondingly reduced the use cost of filter core, has also made things convenient for remote user simultaneously.

Description of the drawings:

FIG. 1 is a schematic structural view of a top cover adopting a step platform structure, a shaft hole with a notch, a step internal thread boss and an internal thread boss.

FIG. 2 is a schematic diagram of a plug board structure of the present invention, which adopts a plurality of plug tongues, control ends, moving channels and reinforcing ribs with plug spaces and the same plug direction.

FIG. 3 is a schematic view of a U-shaped base structure with an outer edge and a pressing structure, a notch supporting structure, a boss structure and an inner handle structure.

FIG. 4 is a schematic sectional view of the vertical surface of the U-shaped base with the outer edge and the pressing structure, the notch supporting structure, the boss structure and the inner handle structure.

FIG. 5 is a schematic diagram of the principle of the invention using a U-shaped swing handle with an inner side wall swing shaft, a coupler with a front and rear connection structure and a radial swing link, an inclined guide structure with an inclined guide rail, and a swing handle mechanism with a board inserting of a traction rod.

FIG. 6 is a schematic diagram of the principle of the invention using a U-shaped swing handle with a swing shaft on the outer side wall, a coupler with a front and a rear connection structure and a radial swing link, an inclined guide structure with an inclined guide rail, and a swing handle mechanism with a board inserting of a draw bar.

Detailed Description

Generally, the filtering channels connecting the filtering bladders and the water passing control component are respectively connected with the water inlet and outlet pipelines of the machine base to form the filtering channels. And selecting relevant water passing control components to control relevant water passing pipelines in the filtering channel of the machine base. The water passing control part is at least one of a waterway switcher, a water passing control valve, a water pressure control switch, a flow sensor, a water pump, a membrane concentrated water discharge flow control device, a TDS probe and a water level monitoring device.

The water flow control components are conventional in the prior art, and it is not described that all of the water flow control components are necessarily adopted in the present application. As to which water passing control components need to be configured in a water purifier provided with a microfiltration membrane, an ultrafiltration membrane, a reverse osmosis membrane filter liner or a nanofiltration membrane filter liner, the water passing control components need to be configured according to specific needs of various machine types and connected with corresponding water passing pipelines, and the water passing control components belong to common knowledge in the field except for special description. The function and principle of the common water passing control part and the connected water passing pipeline are not repeated in the scheme.

Example 1. A capping device of a water purifier provided with an upper control module and a lower filter liner bin comprises a filter liner, a water passing pipeline, a control component, a lower filter liner bin provided with an upper bin port and used for placing and fixing the filter liner, an upper control module used for placing the control component and a loose joint device; the control part is a water passing control part or an electric control part or a combined device of the water passing control part and the electric control part; the water passing pipeline is connected with a plurality of filter liners and the water passing control component to form a filter channel.

The upper control module is integrated with the lower filter container cabin by being inserted and matched up and down and is connected with the lower filter container cabin through a loose joint device, can be a U-shaped control module with a U-shaped base, can also be a plate-shaped control module which is arranged in the lower filter container cabin and is positioned above the filter container, and can also be a U-shaped control module which is arranged in the lower filter container cabin, is positioned above the filter container and is provided with a U-shaped base.

The water purifier also comprises a plug board provided with a plug space, a plurality of plug tongues and traction rods in the same plug direction, a sealing device which is formed by integrally connecting a top cover and a cover plate at a certain distance through screws to form a built-in plug board interlayer, a swing rod and a shaft seat which are provided with swing shafts, a shaft coupling with a transmission part, a rear connecting structure and a radial swing rod, a swing mechanism which is formed by an inclined guide structure for controlling the axial movement of the shaft coupling, and a pressing structure which is arranged on the vertical side wall near the upper end bin opening of the U-shaped control module or the lower filter liner bin, corresponds to the upper part of the plug tongues and is in plug fit with the plug tongues; the transmission part of the input end of the shaft coupling arranged on the shaft seat is in linkage fit with the swing rod directly or through an additionally arranged transmission mechanism, the two parts keep swing linkage in the range of the axial displacement generated by the shaft coupling, and the rear connecting structure is in movable connection fit with the traction structure arranged on the inserting plate: the coupler swings along with the swing rod and is in contact fit with the inclined guide rail of the inclined guide structure through a radial swing rod of the coupler and drives the plugboards to be axially linked; the cover sealing device is matched with the U-shaped control module or the lower filter liner bin up and down, the oscillating rod drives the coupler to oscillate in the forward direction, the radial oscillating rod generates axial component force under the guiding action of the forward inclined guide rail in front of the oscillation in the oscillating process along with the coupler to drive the coupler and the inserting plate to move in the forward direction in the axial direction, the inserting tongue is inserted into the position below the lower pressing structure, namely, the inserting position is located, the upper end surface of the inserting tongue is in contact fit with the lower end surface of the lower pressing structure, and the cover sealing device is connected with the U-shaped control module or the lower filter liner bin into a whole; the swing control end swings reversely to force the radial swing rod to generate opposite axial component force under the guiding action of the reverse inclined guide rail in front of swing in the process of swinging reversely along with the coupler to drive the coupler and the inserting plate to move reversely in the axial direction, the inserting tongue moves back to a position which is not inserted below the downward pressing structure, namely, is positioned in the inserting vacant position, and then the cover sealing device is separated from the U-shaped control module or the lower filter liner bin up and down.

The shaft coupling can be directly in linkage fit with the swing rod (the shaft coupling axis is overlapped with the swing axis of the swing rod), and can also be in linkage fit with the swing rod through an additional transmission mechanism (the shaft coupling axis is overlapped with or parallel to the swing axis of the swing rod) such as a shaft transition mechanism or a gear transition mechanism.

In the scheme, the coupling refers to a device which can rotate and can move along the axial direction of the rotating shaft. The coupler and the inclined guide structure can be located on the cover lifting device (in a preferred mode), can also be located on the U-shaped module, and can also be located on the cover lifting device and the U-shaped module respectively (in the same mode).

The swing rod is linked with the transmission part of the coupling through a swing shaft or a shaft transition mechanism or a gear transition mechanism, and the coupling can move axially. The swing rod and the coupler keep swing linkage in the range of axial displacement of the coupler.

As a special example, the coupling is provided with a fixed structural part and a movable structural part, and the movable structural part is axially movable along a transmission (shaft or sleeve) on the fixed structure. At this time, even when the swing lever is directly placed on the transmission shaft on the coupler fixing structure, the transmission shaft is regarded as a swing shaft (i.e., the swing shaft and the transmission shaft of the coupler). In addition, the swing shaft of the swing rod can also be an input end transmission shaft of the shaft transition mechanism. Or an input end transmission shaft of the gear transition mechanism (the same below).

In the above-mentioned oscillating lever, the "oscillating lever with oscillating shaft" is considered to be present in the coupling with the transmission member of the coupling through the oscillating shaft or through the shaft transition mechanism or the gear transition mechanism (the same applies hereinafter).

The shaft seat for supporting the limit pendulum shaft can be an independent structure for supporting the pendulum shaft, and can also be a support limit structure for supporting and limiting other transmission shafts such as a transmission shaft of a coupler or a transmission shaft sleeve or a transmission shaft of a shaft transition mechanism or a gear transmission shaft. Therefore, the axle seat is determined to exist as long as the swing axle or the transmission axle rotates on the fixed support limit (the same below).

The back draw structure of shaft coupling and the draw structure swing joint cooperation that the picture peg set up constitute sound linkage mode: the front and rear connecting structures can rotate and axially move, and the rear flashboard traction structure can only move forwards and backwards along the shaft coupling shaft after the rear flashboard traction structure. Generally, the rear connecting structure and the traction structure are axially connected and linked through a pin shaft structure mode or a shaft sleeve structure mode which does not affect the rotation of the rear connecting structure, and the traction structure is limited by a corresponding limiting structure to only move along the axial direction (the same below).

Example 2. A capping device of a water purifier provided with an upper control module and a lower filter liner bin comprises a filter liner, a water passing pipeline, a control component, a lower filter liner bin provided with an upper bin port and used for placing and fixing the filter liner, an upper control module used for placing the control component and a loose joint device; the control part is a water passing control part or an electric control part or a combined device of the water passing control part and the electric control part; the water passing pipeline is connected with a plurality of filter liners and the water passing control component to form a filter channel.

The water purifier also comprises a plug board provided with a plug space, a plurality of plug tongues and traction rods in the same plug direction, a sealing cover device which is formed by integrally connecting a top cover and a cover plate at a certain distance through screws to form a built-in plug board interlayer, a swinging rod and a shaft seat which are provided with swinging shafts, a coupling which is provided with a transmission part and a rear connecting structure, a radial swinging rod and a reset spring, a swinging mechanism which is formed by an inclined guide structure for controlling the axial movement of the coupling, and a pressing structure which is arranged on the vertical side wall near the bin opening at the upper end of the U-shaped control module or the lower filter liner bin, corresponds to the upper part of the plug tongues and is in plug fit with the plug; the transmission part of the input end of the shaft coupling arranged on the shaft seat is in linkage fit with the swing rod directly or through an additionally arranged transmission mechanism, the two parts keep swing linkage in the range of the axial displacement generated by the shaft coupling, and the rear connecting structure is in movable connection fit with the traction structure arranged on the inserting plate: the coupler swings along with the swing rod and is in contact fit with the inclined guide rail of the inclined guide structure through a radial swing rod of the coupler and drives the plugboards to be axially linked; two ends of the reset spring respectively act between the coupler (or the inserting plate) and the sealing cover device; the cover sealing device is matched with the U-shaped control module or the lower filter liner bin up and down, and the radial swing rod is positioned at one end of the inclined guide rail under the action of the resilience force of the return spring; the oscillating rod drives the coupler to oscillate, so that the radial oscillating rod generates axial component force under the guiding action of the inclined guide rail in front of the oscillation in the oscillating process along with the coupler, and overcomes the resilience force of the return spring to move to the other end of the inclined guide rail; the plug board moves axially between two positions corresponding to the radial swing rod along with the coupler, the insertion tongue on the plug board or the position inserted below the downward pressing structure is located at the insertion position, the upper end face of the insertion tongue is in contact fit with the lower end face of the downward pressing structure, the sealing device and the U-shaped control module or the downward filter container bin are connected into a whole, or the sealing device is retreated to the position which is not inserted below the downward pressing structure and is located at the insertion vacancy, and then the sealing device and the U-shaped control module or the downward filter container bin are separated up and down.

The inclined guide structure can be provided with a positive inclined guide rail: the inserting tongue is inserted into the inserting position along with the movement of the radial swing rod along the front inclined guide rail, and the corresponding sealing cover device is in a normally open mode. The inclined guide structure can also be provided with reverse inclined guide rails: and the inserting tongue moves back to the inserting vacant position along with the movement of the radial swing rod along the front inclined guide rail, and the corresponding cover sealing device is in a normally closed mode (a preferred mode).

In the above embodiments 1 and 2, the U-shaped base is adopted as the external upper control module, i.e., the U-shaped control module. The built-in upper control module is regarded as a part of the lower filter container cabin, so that the pressing structure arranged on the lower filter container cabin can also be arranged on the built-in upper control module.

The built-in upper control module is provided with a plate-shaped base, a U-shaped base and a base with a structure derived from two types of structures, namely the plate-shaped base or the U-shaped base. In the present case, the square base, the L-shaped base, the H-shaped base, the side F-shaped base, the side T-shaped base, and the inverted T-shaped base are all regarded as derived structures of two major structures, i.e., the plate-shaped base or the U-shaped base, and therefore, the derived bases are regarded as the plate-shaped base or the U-shaped base.

The sealing device is either an internal sealing device or an external sealing device, wherein for the internal sealing device, when the internal sealing device is matched with the U-shaped control module or the lower filter container bin in an up-and-down inserting manner, the internal sealing device is matched with the side wall of the U-shaped control module in an inside-and-outside manner or is matched with the side wall of the lower filter container bin in an inside-and-outside manner.

For the external sealing device, when the external sealing device is matched with the U-shaped control module or the lower filter container bin in an up-and-down inserting mode, the external sealing device is matched with the side wall of the U-shaped control module in an outward-and-inward mode or matched with the side wall of the lower filter container bin in an outward-and-inward mode.

For injection moulding and showing the degree of difficulty and the cost that reduce injection moulding, can give priority to setting the below projection scope of pushing down the structure to the structure of leaving a blank of visual lower terminal surface of pushing down the structure.

Additionally, the hold-down structure may be laterally convex to the vertical sidewall. Or may be secured to the vertical side walls by fastening standard members such as screws.

Example 3. On the basis of the embodiment 2, the inclined guide structure is provided with the swing clamping structure at one end of the inclined guide rail corresponding to the reset spring with a larger compression distance, the radial swing rod clamp swings into the clamping structure to form in-situ swing without axial displacement (the reset spring cannot reset), and then the insertion tongue stays at the corresponding position. Preferably, a clamping structure is arranged at one end of the inclined guide rail corresponding to the insertion tongue and positioned in the insertion vacant position.

Example 4. On the basis of the embodiments 1, 2 and 3, the side wall of the U-shaped control module or the side wall of the lower filter chamber is provided with a corresponding notch supporting structure aiming at the downward pressing structure, and the height difference between the upper end surface of the notch supporting structure and the lower end surface of the downward pressing structure corresponds to the thickness of the inserting tongue on the inserting plate; breach bearing structure with push down the structure or adopt down, go up the mode that vertical apposition corresponds, or adopt down, go up the mode that vertical dislocation corresponds, wherein:

And for the mode corresponding to the lower vertical homothety and the upper vertical homothety of the notch supporting structure and the pressing structure, the vertical side wall where the notch supporting structure and the pressing structure are located vertically shields the inserting position formed between the notch supporting structure and the pressing structure.

For the mode corresponding to the lower and upper vertical dislocation of the notch supporting structure and the downward pressing structure, the vertical side wall where the notch supporting structure and the downward pressing structure are located vertically exposes the splicing vacancy and the splicing position; when the cover sealing device is matched with the U-shaped control module or the lower filter liner bin up and down, the inserting tongue of the inserting plate corresponds to the notch supporting structure; the swing mechanism drives the inserting plate to move transversely so that the inserting tongue is inserted into the lower position of the pressing structure and is positioned at the inserting position; the swing mechanism drives the plug board to move reversely so that the plug tongue returns to the plug vacant position. This mode is preferred because it facilitates injection molding of the hold-down structure and the notched support structure and significantly reduces the difficulty and cost of injection molding.

As a first mode of embodiment 4, when the hold-down structure is sandwiched between the top cover and the insert plate (tongue) of the capping device and is fitted in contact with the upper and lower parts of the two parts, the part where the hold-down structure is located is longitudinally linked with the capping device where the insert plate (tongue) is located. At this time, the height difference between the upper end surface of the notch supporting structure and the lower end surface of the pressing structure can be equal to or larger than the thickness of the inserting plate or the inserting tongue.

As a second mode of embodiment 4, when the component where the push-down structure is located is only fitted with the top cover of the capping device but not in upper and lower contact (a space is left), the height difference between the upper end surface of the notched support structure and the lower end surface of the push-down structure is equal to the thickness of the insert plate or the insert tongue, and then the insert tongue on the insert plate is sandwiched between the push-down structure and the notched support structure and is fitted in upper and lower contact with the two components.

For the notch supporting structure and the pressing structure which are arranged in the direction perpendicular to the inserting direction of the inserting tongue, the mode that the notch supporting structure and the pressing structure correspond to the vertical position of the lower part and the upper part can be adopted, and the unidirectional dislocation mode that the vertical dislocation of the lower part and the upper part (front part and back part) corresponds to the unidirectional dislocation mode can be adopted.

For the notch supporting structure and the pressing structure which are arranged in parallel to the inserting direction of the inserting tongue, the notch supporting structure and the pressing structure can adopt a one-way dislocation mode corresponding to the vertical dislocation of the lower part and the upper part (the front and the back along the inserting direction of the inserting tongue) and also can adopt a two-way dislocation mode corresponding to the vertical dislocation of the lower part and the upper part in two directions (the front and the back along the inserting direction of the inserting tongue and the inside and the outside along the inserting direction of the inserting tongue perpendicular to the inserting direction of the inserting tongue)

Example 5. On the basis of the

above embodiments

1, 2, 3 and 4, the capping device is an external capping device; a boss structure is arranged on the outer side of the side wall of the U-shaped control module or the lower filter liner bin, and a mode that a notch supporting structure and a lower pressing structure are staggered and correspond to each other in the lower direction and the upper direction is adopted; the boss structure corresponds to the notch supporting structure on the upper part, and the side wall of the external sealing cover device shields the boss structure in a corresponding inserting position state. For the U-shaped control module, the lower end face of the side wall of the cover sealing device and the lower end face of the boss structure are preferably in the same plane.

Example 6. On the basis of the

above embodiments

1, 2, 3, 4 and 5, the U-shaped base is provided with the inner handle structure with the upper end cover structure at the left side and the right side for lifting the U-shaped control module or lifting the lower filter chamber, and the combination of the vertical side wall of the inner handle structure and the upper end cover structure is provided with the downward pressing structure and the notch supporting structure, so that the inserting tongue of the inserting plate is transversely inserted into the lower position of the upper end cover structure, namely, is positioned at the inserting position, and the upper end surface of the inserting tongue is in contact fit with the lower end surface of the upper end cover.

In the present case, set up the interior handle structure (being equivalent to vertical lateral wall) of pushing down structure and breach bearing structure with left and right both sides and also regard as the U type module that sets up U type base.

To the interior handle structure that sets up inside and outside vertical lateral wall, both can set up breach bearing structure in the inside wall and the upper end cover of handle structure combination department including, then make the upper end cover that corresponds this breach constitute and push down structure and breach bearing structure, also can set up recessed structure (being equivalent to breach bearing structure) in the lateral wall and the upper end cover combination department that are used for portable interior handle structure to and as the outer edge of pushing down the structure, then make the upper end cover that corresponds this bearing structure constitute and push down structure and breach bearing structure.

The inner handle structure can be integrally injection-molded with the U-shaped module. On this basis, in order to facilitate injection moulding, set up below the interior handle structure and keep somewhere the empty structure.

The inner handle structure can be connected with the U-shaped module through a fastening standard part to form a whole after being independently injection molded, so that the structure and the manufacturing requirements of the inner handle structure are met, and the filter container bin can be arranged below the U-shaped module sealing cover.

In this embodiment, a lower and upper vertical dislocation mode (forward and backward along the insertion direction of the insertion tongue) is preferably adopted, so that the insertion tongue of the insertion plate is conveniently inserted into the lower position of the downward pressing structure on the upper end cover, that is, the insertion position is located, and the upper end surface of the insertion tongue is in contact fit with the lower end surface of the downward pressing structure (also the lower end surface of the upper end cover structure).

As the improvement, when the cover lifting device adopts the external cover lifting device and is connected with the U-shaped module through the inserting tongue inserted and pressed structure into a whole, the external cover lifting device can completely shield the inner handle structure (without lifting space) of the U-shaped module, and then the inner handle structure can not be lifted through the side wall of the external cover lifting device.

In addition, the external cover lifting device can also be provided with a lifting opening structure corresponding to the lifting handle structure in the U-shaped module, so that the internal lifting handle structure can be lifted through the side wall of the external cover lifting device, and the U-shaped module can also be lifted after the external cover lifting device is removed.

To carrying the device of covering and inserting with putting down and strain the courage storehouse to when placing the U type module in putting down and strain the courage storehouse in and adopting U type base, this U type base also can set up the interior handle structure of upper end cover in left and right both sides and be used for carrying and carry U type module, and set up breach bearing structure and push down the structure on it. The U-shaped base is connected with the lower filter container bin into a whole through the inserted link inserting mechanism, so that the side wall of the U-shaped base is regarded as the side wall of the lower filter container bin.

On the basis of the structure, reinforcing rib structures can be arranged on the outer side wall of the inner handle structure for carrying by hand and the outer edge arranged at the joint of the outer side wall and the upper end cover.

In the present case, the notch supporting structure and the pressing structure disposed on the inner handle structure may adopt a unidirectional dislocation mode (such as a front-back direction or a left-right direction) along one direction, or may adopt a bidirectional dislocation mode (such as a front-back direction and a left-right direction) along two directions.

Example 7. On the basis of the

above embodiments

1, 2, 3, 4, 5, and 6, the left and right swing mechanisms and two insertion boards with opposite insertion directions are provided: a left insert plate and a right insert plate; aiming at each plugging position of the same U-shaped control module or the side wall of the lower filter tank bin, the left and right plug boards move in opposite plugging directions to enable plug tongues on the plug boards to move and plug into the plugging positions; the left and right plug boards respectively move reversely to make the plug tongues return to the plug vacant positions; the swing rods of the left swing mechanism and the right swing mechanism are respectively connected with another transverse handle to form a U-shaped swing handle; this U type swing handle drives two sets of balance staff and shaft coupling swings through left and right both ends swing arm (swinging arms) simultaneously to two slope guide structure control left and right picture pegs that set up through the mirror image move with opposite grafting direction: the inserting tongues on the left inserting plate and the right inserting plate are inserted into the inserting positions or withdrawn to the inserting vacant positions at the same time.

Example 8. On the basis of the

embodiments

1, 2, 3, 4, 5, 6 and 7, the swing rod is a U-shaped swing handle; the sealing device is provided with a step platform structure matched with the U-shaped swing handle.

The step platform structure can be arranged on the outer edge of the top cover of the cover sealing device. The swing shaft seat structure which is in hinged fit with the swing shaft of the U-shaped swing handle is arranged on the vertical side walls of the steps on the left and right outer sides of the step platform structure at the position of the outer edge of the top cover of the sealing device, and the U-shaped swing handle is subjected to swing limit by an additionally arranged swing limit structure; the interlayer is arranged below the step platform structure. This mode is preferred in this embodiment.

The step platform structure can also be arranged at the central position of the top cover of the cover sealing device; the swing shaft seat structure which is hinged and matched with the swing shaft of the U-shaped swing handle is arranged on the vertical side walls of the steps on the left inner side and the right inner side of the step platform structure positioned in the center of the top cover, and the U-shaped swing handle is subjected to swing limit by an additionally arranged swing limit structure; the interlayer is arranged below the step platform structure.

In the accompanying fig. 1-4:

in fig. 1, the top cover 1 of the external capping device is provided with a vertical sidewall 12, and a step platform structure having high and low planes 1a and 1b and a step vertical sidewall 12 a. The high and low planes 1a and 1b of the step platform structure are respectively provided with a step internal thread boss 11 and an internal thread boss 11a at the inner sides, and then a matching surface is arranged for the inserting plate 2 provided with the moving channel 23. And a shaft hole 13 with a notch is arranged on the vertical side wall 12a of the step and used as a shaft seat. The U-shaped swing handle 14 is transversely inserted into the shaft hole 13 of the vertical side wall 12a of the step through a swing shaft 14a with a radial boss 14b, and the U-shaped swing handle 14 is limited in swing through the low plane 1a and a swing limiting structure 12b parallel to the axis of the shaft hole 13. In the process that the U-shaped swing handle 14 swings around the shaft hole 13, the vertical side wall 12a of the step where the shaft hole 13 is located is arranged between the U-shaped swing handle 14 and the radial boss 14b, and the U-shaped swing handle 14 is axially limited.

In fig. 2, the board 2 is provided with a plug-in space 22 and a plurality of plug tongues 21 in the same plug-in direction, a displacement channel 23, a traction bar 27 with a traction head 27a, as well as board ribs 24 and plug tongue lead-in structures 26. The tongue guide-in structure 26 is provided to facilitate the insertion and mating of the tongue with the hold-down structure.

The top cover 1 and the cover plate (not shown) with intervals are connected into a whole through screws to form a sealing device with a built-in inserting plate 2 interlayer. The distance between the top cover 1 and the cover plate is kept through the stepped internal thread boss 11 and the internal thread boss 11a, the transverse movement of the inserting plate is facilitated, and the longitudinal (up and down) movement of the inserting plate 2 is limited.

In fig. 3, the vertical sidewall 32 near the top bin mouth of the U-shaped base 3 of the U-shaped control module, which is in up-and-down insertion fit with the external capping device, is provided with an outer edge 33, and a notch supporting structure 31 and a pressing structure 33 a.

On the basis, an inner handle structure 34, a boss structure 35 and a pressing structure reinforcing rib 36 can be further arranged.

Similarly, an outer edge 33, a notch supporting structure 31 and a downward pressing structure 33a can be arranged on the vertical side wall near the upper end bin opening of the lower filter container bin which is in up-and-down inserting fit with the external sealing cover device, and the outer edge 33, the notch supporting structure 31 and the downward pressing structure 33a can also be arranged with reference to the attached drawing 3. And may also be provided with an inner handle structure 34, a boss structure 35, and hold-down structure ribs 36.

In fig. 4, when the cover device is completely engaged with the U-shaped base 3, the tongue 21 of the insert board 2 is positioned at the position of the notch support structure 31 and below the pressing structure 33 a. A notch 31a is formed at the joint of the inner side wall 32a of the inner handle structure 34 and the upper end cover, so that the upper end cover corresponding to the notch 31a forms a pressing structure 33 a. The upper end of the outer side wall of the inner handle structure 34 for carrying by hand may also be provided with a conventional outer rim 33 of a non-corresponding insert tongue as a reinforcement for the U-shaped base 3, and the vertical reinforcement 35a of the inner handle structure and its lower end is aligned with the lower end of the boss structure 35. To facilitate injection molding, a clearance structure 37 is provided below the inner handle structure 34.

The U-shaped swing handle positioned on the step platform structure can drive the two sets of swing shafts and the coupler to swing at the same time, and controls the insertion tongues on the left and right insertion plates to be inserted into the insertion positions or retreat to the insertion vacant positions at the same time.

The U-shaped swing handle positioned on the step platform structure can only drive one set of swing shaft and the coupler to swing, and controls the insertion tongue on one corresponding insertion plate to be inserted into the insertion position or retreat to the insertion vacancy.

Example 9. This embodiment is the most preferred embodiment. On the basis of the

embodiments

1, 2, 3, 4, 5, 6, 7 and 8, the inclined guide structure is provided with three control positions corresponding to the swinging of the U-shaped swinging handle and a related inclined guide rail for controlling the axial movement of the shaft coupling along with the swinging of the radial swing rod among the three swinging control positions; the three control positions are, respectively, a first control position: the U-shaped swing handle is positioned at a horizontal position and the inserting tongue is positioned at a position corresponding to the inserting position; the second control position: the U-shaped swing handle is positioned at the inclined lifting position and the inserting tongue is positioned at the inserting vacant position; third control position: the U-shaped swing handle is positioned at a vertical position and the inserting tongue is positioned at a position corresponding to the inserting position; the U-shaped swing handle is linked with the coupler through a swing shaft connected with the U-shaped swing handle or linked with the coupler through a transition swing shaft arranged additionally or linked with the coupler through a linked swing shaft.

The first connection and matching mode (preferred mode) of the U-shaped swing handle, the coupler and the inclined guide structure is as follows:

in fig. 1 and 5, the step platform structure of the capping device for placing the U-shaped swing handle 14 is arranged at the outer edge of the top cover 1. A swing shaft seat structure (a shaft hole 13) which is in hinged fit with a swing shaft of the U-shaped swing handle 14 is arranged on the vertical side wall 12a of the step on the left and right outer sides of the step platform structure at the outer edge of the top cover 1 of the sealing device, and the U-shaped swing handle is subjected to swing limit by an additionally arranged swing limit structure 12 b; the interlayer is arranged below the step platform structure.

The front connecting structure 41 of the coupler 4 is in insertion fit and rotary linkage with the swing shaft 14a provided with the matching structure 14b, and the front connecting structure 41 can also axially move in the rotary linkage process with the swing shaft 14a, and the axial movement range of the front connecting structure corresponds to the movement of the plug tongue between the insertion position and the insertion vacant position.

The inclined guide structure is provided with two opposite

inclined guide rails

43 and 43b, and the corresponding plug tongue 21 is retracted to the plug vacant position from the position corresponding to the plug position (including being arranged below the pressing structure or being arranged above the pressing structure).

The inclined guide structure is provided with two positively inclined guide rails 43a, 43c, which correspond to the positions of the plug tongue 21 which are moved (inserted) from the plug-in empty space to the corresponding plug-in position.

While the radial swing rod 42 on the coupler 4 arranged at the first control position swings along with the coupler 4, the radial swing rod moves to the second control position (the radial swing rod 42a) along the reverse inclined guide rail 43 in the axial direction and moves back to the splicing vacancy corresponding to the insertion tongue, the cover sealing device is in a cover opening position state, and the U-shaped swing handle 14 is in an inclined suspension position state.

Thereafter, if the closure is to be closed, the U-shaped swing handle 14 is swung back to the horizontal position, and the radial swing link 42 is moved axially along the forward inclined guide rail 43a to the first control position (radial swing link 42) while being swung back with the coupling 4. If the machine is lifted upwards, the U-shaped swing handle 14 is continuously swung to the vertical position (limited by the swing limiting structure 12 b), and the radial swing link 42 continuously swings along the coupler 4 and simultaneously axially moves to the third control position (the radial swing link 42b) along the positive inclined guide rail 43 c. The inserting tongue is inserted into the inserting position to enable the sealing device and the lower filter container cabin to be inserted into a whole and lifted together.

When the U-shaped swing handle 14 at the vertical position swings back to the horizontal position, the radial swing link 42b correspondingly positioned at the third control position swings back along the coupler, and moves along the reverse inclined guide rail 43b and the forward inclined guide rail 43a to drive the insertion tongue to return to the first control position (the radial swing link 42).

The connection and matching mode of the U-shaped swing handle, the coupler and the inclined guide structure is as follows:

the step platform structure of the capping device is arranged at the central position of the top cover; a swing shaft seat structure (shaft hole) which is hinged and matched with a swing shaft of the U-shaped swing handle 14 is arranged on the vertical side walls of the steps on the left and right inner sides of the step platform structure positioned in the center of the top cover, and the U-shaped swing handle is subjected to swing limit by an additionally arranged swing limit structure; the interlayer is arranged below the step platform structure.

In fig. 6, the mode of the swing handle mechanism formed by the connection and cooperation of the U-shaped swing handle 14 and the coupling 4 and the four

inclined guide rails

43, 43a, 43b, 43 of the inclined guide structure is the same as the control principle of the mode of the swing handle mechanism shown in fig. 5 (see the relevant content of fig. 5). The two modes of swinging handle mechanism differ in that: the U-shaped swing handle 14 and the coupler in the swing handle mechanism mode shown in the attached drawing 5 are inserted into the inserting position and retracted to the inserting vacancy corresponding to the inserting tongue, a mode of 'forward pulling and backward pushing' of the inner side wall swing shaft and the coupler of the U-shaped swing handle 14 is adopted, a mode of 'backward pulling and forward pulling' of the coupler is adopted, a mode of 'forward pulling and backward pushing' of the coupler is adopted, a mode of 'backward pushing and forward pulling' of the outer side wall swing shaft 14 and the coupler is adopted, and a mode of 'forward pulling' of the coupler and the inserting position corresponding to the inserting tongue is.

The principle modes of the two swing handle mechanisms shown in fig. 5 and 6 are applicable to the embodiments represented by embodiments 1 and 2 (whether or not a step platform structure is provided). When the two modes of the swing handle mechanism shown in fig. 5 and 6 are respectively combined with the mechanism described in the embodiment 2, the return spring is used for replacing the two unidirectional inclined guide rails.

Example 10. On the basis of the above embodiments 8 and 9, the device further comprises a clamping mechanism corresponding to the first control position and the second control position; the clamping mechanism is provided with two same convex structures or concave structures corresponding to the first and second control positions on the vertical side wall where the shaft seat is located, and is provided with a corresponding concave structure or convex structure at the side relevant position where the U-shaped swing handle is in swing fit with the vertical side wall, or is provided with a convex structure or concave structure on the vertical side wall where the shaft seat is located, and is provided with two same concave structures or convex structures corresponding to the first and second control positions at the side relevant position where the U-shaped swing handle is in swing fit with the vertical side wall; the U-shaped swing handle without axial displacement drives the swing shaft to swing in situ, the side faces of swing arms on two sides of the U-shaped swing handle are provided with concave structures or convex structures, and the side faces of the swing arms on two sides of the U-shaped swing handle are provided with convex structures or concave structures which are respectively clamped and matched with the corresponding first control position and the corresponding second control position by the convex structures or the concave structures, so that the position of the U-shaped swing handle is controlled and prompted. Especially, can also offset the action of gravity of U type swing handle through the cooperation degree of tightness of card joining in marriage the mechanism, make the unsettled stop of U type swing handle in second control position department, then correspond the position state of uncapping of closing cap device.

The convex structure of the clamping mechanism can be a rigid round head structure and is in rigid interference fit with the concave structure, namely the convex structure and the concave structure are mutually matched with each other in the positions corresponding to the first control position and the second control position by interference fit tightness.

The convex structure of the clamping mechanism can also be a rigid round head structure and can be matched with a concave structure on an elastic side wall capable of generating an elastic position in an elastic contact mode, namely the rigid round head structure is matched with the concave structure capable of generating the elastic position in an elastic contact mode at the corresponding first control position and the corresponding second control position. Such as a recess structure disposed on a cantilevered structure or a movable recess structure that can be displaced.

The convex structure of the blocking mechanism can also be a movable rigid round head structure which is arranged on an elastic body (such as a spring or an elastic deformation body) and is matched with the concave structure in an elastic contact mode (a preferred mode), namely, the movable rigid round head structure which is arranged on the elastic body and is movable is matched with the concave structure arranged on the rigid side wall in an elastic contact mode.

The movable rigid round head structure can be a ball or a round head roller. As an improvement, the round-head roller can be further provided with an outer edge used for preventing falling and limiting.

In addition, the locking mechanism can be extended, that is, the locking mechanism can be added to the

embodiments

1, 2, 3, 4, 5, 6, and 7.

In each of the above embodiments 1-10, the coupling may be placed on the shaft seat directly, or may be placed on the shaft seat through the swing shaft, or may be placed on the shaft seat through the transition swing shaft or the gear shaft, and therefore, the above four modes are all regarded as "couplings placed on the shaft seat".

In each of the above examples 1-10, the term "in situ" refers to the theoretical "no axial displacement" (regardless of process manufacturing tolerances). The U-shaped swing handle without axial displacement drives the swing shaft to swing in situ, the vertical side wall where the shaft seat is located is used for axially limiting the swing shaft linked with the U-shaped swing handle, and then the U-shaped swing handle linked with the swing shaft or connected with the swing shaft to form a whole is ensured to have no axial displacement.

The U-shaped swing handle can also be formed by arranging radial bosses and connected injection molding parts on the circumferential surface of a (cantilever) swing shaft which is connected with the left side and the right side of the U-shaped swing handle and is oppositely arranged. The vertical side wall where the shaft seat is located is provided with a shaft hole with a notch, and the size of the notch corresponds to the radial boss of the swing shaft. The pendulum shaft provided with the radial boss is inserted into the shaft hole (namely the shaft seat) with the notch on the side wall of the top cover through the elastic deformation of the U-shaped swinging handle, so that the pendulum shaft cannot be overlong. In the swinging process of the U-shaped swinging handle, the vertical side wall with the notch shaft hole, the radial bosses of the swinging shaft positioned on the inner side and the outer side of the vertical side wall and the U-shaped swinging handle are mutually axially limited, so that the U-shaped swinging handle linked with the swinging shaft or connected with the swinging shaft into a whole is ensured to have no axial displacement (theoretically). On the basis, the corresponding shaft or shaft sleeve with the notch is arranged to be matched with the radial boss of the pendulum shaft in an axial insertion manner and rotationally linked to form the transition structure.

In order to avoid the swinging shaft of the U-shaped swinging handle connection body to be separated from the shaft hole formed on the vertical side wall as much as possible, the opening of the shaft hole faces to avoid three control positions as much as possible: the gap of the shaft hole is oriented to correspond to the swing interval between the first and second control positions or the swing interval between the second and third control positions, wherein the latter is preferred.

Aiming at the condition that the length of a pendulum shaft formed by linkage or connection of U-shaped swing handles is short due to structural design or assembly environment limitation and the like, and the situation that the pendulum shaft is difficult to keep rotary linkage in the range (the movement distance of an inserting tongue) of axial displacement generated by a coupler is difficult to ensure, through arranging a front-back butt-joint transition pendulum shaft between the pendulum shaft and the coupler, the structural design and the assembly requirements of the U-shaped swing handles are facilitated, and the pendulum shaft and the coupler are kept in rotary (swing) linkage in the range of axial displacement generated by the coupler.

In the scheme, the swing shaft can be an independent swing shaft or a swing shaft and a transition swing shaft assembly linked with the swing shaft. In addition, the swing angle range of the U-shaped swing handle is not limited to 0-90 degrees, for example, the swing angle range can be 0-180 degrees, and a corresponding swing limiting structure is arranged when the swing range is required to be limited.

In the above embodiments, the movable connection device is at least one of a swing locking device, a locking hook device, an elastic buckling device, a screwing structure or a screw structure, which are conventional technologies.

When the movable joint device adopts a swinging locking device, a locking piece of the swinging locking device is arranged on the lower filter container cabin through a swinging shaft, and a buckle on the locking piece is contacted and matched with a clamping seat structure arranged on the upper control module through swinging and elastic deformation of the locking piece, so that the upper part and the lower part are fixedly connected together. The buckle of the lock catch piece can be opened to release the connection and matching between the upper component and the lower component, and the filter liner is replaced.

In addition to the above-mentioned single-axis swing latch, the loose joint device may also adopt a double-axis swing latch:

when the loose joint device adopts a double-shaft swinging locking device, the loose joint device is provided with a locking piece and a connecting rod structure, the locking piece is matched with the clamping seat structure, the other end of the connecting rod structure which is matched with the swing shaft in a hinged mode is hinged with the other end of the connecting rod structure through a non-fixed swing shaft to form a double-shaft swinging locking device with a middle non-fixed swing shaft, the upper control module and the lower filter container bin can be connected into a whole, and the functions of simultaneously sealing and butting a plurality of downward upper butting water gaps of a water passing pipeline of the upper control module and upward lower butting water gaps of filter containers corresponding to the lower filter container bin or the lower filter container bin when the water passing pipeline spans between the two parts are realized.

And the front end of the swing hook is in contact fit with the clamping seat structure on the second component or the lock column serving as the clamping seat structure under the action of the elastic reset mechanism. In addition, the locking hook device can also adopt that one of the two components is provided with a moving hook part which is in contact fit with a clamping seat structure on the second component or a locking column serving as the clamping seat structure under the action of a spring, the upper control module and the lower filter liner bin (or the filter liner) are connected into a whole, and a plurality of upper butt joint water gaps of the water passing pipeline of the upper control module are simultaneously in sealing butt joint with the lower butt joint water gaps of the corresponding self-supporting filter liner.

In addition, when the loose joint device is an elastic buckle device, a first part of the upper control module and a second part of the lower filter container bin are provided with a rigid crease connecting structure and a lock catch piece and are in elastic locking fit with a clamping seat structure on the second part, wherein the rigid crease connecting structure is a rigid body made of the same material and provided with thicker materials at two ends, and the middle part of the rigid crease connecting structure is provided with a thinner material and an elastic buckle device connected into a whole by the crease structure. The lower end of a locking piece of the elastic buckling device is connected to a first component through a rigid crease connecting structure, and the upper end buckle of the locking piece is in locking fit or disengagement with a second component through self swinging and elastic deformation of the locking piece.

As a preferable loose joint mode, the loose joint device can also be a device with one of two connection modes of a rotary clamping structure and a thread structure.

1. When the upper control module is connected with the lower filter container cabin in a threaded connection mode, the lower filter container cabin can be of a bolt structure which is connected and matched with the nut piece. The bolt structure arranged on the lower filter container cabin penetrates through the through hole structure of the upper control module to be connected and matched with the nut piece, so that the upper control module and the lower filter container cabin are connected into a whole. In addition, the bolt structure of the lower filter container cabin can be set into a screw to be connected and matched with a nut member which is acted on the upper control module and penetrates through the through hole structure and is provided with a limiting boss, so that the upper control module and the lower filter container cabin are connected into a whole.

2. The lower filter container cabin can also be a nut structure which is connected and matched with the bolt piece. The upper control module and the lower filter container bin are connected into a whole through a nut structure of the lower filter container bin and a bolt piece which acts on the upper control module and penetrates through a through hole structure.

On the basis, the nut structure of the lower filter container bin can be set into a boss structure and penetrates through the through hole structure of the upper control module, and the nut structure is connected and matched with a bolt (screw) acting on the upper control module to connect the upper control module and the lower filter container bin into a whole.

As a derived simple device of the thread structure, a fastening standard piece can be adopted to be connected and matched with the corresponding thread structure of the lower filter liner bin.

3. When the upper control module is connected with the lower filter container cabin in a rotary clamping connection mode, the lower filter container cabin can also be provided with a circular arc radial fixing tooth buckle structure which is in rotary connection and matching with the circular arc radial tooth buckle, a gap is arranged between the two circular arc radial fixing tooth buckle structures and used for inserting and swinging the circular arc radial tooth buckle arranged on the upper control module, the circular arc radial fixing tooth buckle structures are in mutual rotary connection and matching with the circular arc radial fixing tooth buckle structures to form inner buckle type tooth buckle connection and matching, and the upper control module and the lower filter container cabin are connected into a whole.

In addition, the positions of the arc-shaped radial tooth buckles, the arc-shaped radial fixing tooth buckles and the gaps among the arc-shaped radial fixing tooth buckles in the third screwing mode can be interchanged to form a fourth mode, and the upper control module and the lower filter liner bin can be screwed and integrated through the two-component tooth buckle connecting structure.

The fourth mode: when the upper control module is connected with the lower filter container cabin in a screwing and clamping connection mode, the lower filter container cabin can also be provided with a circular arc radial tooth buckle structure which is screwed and matched with the circular arc radial fixed tooth buckle, a gap is arranged between the two circular arc radial tooth buckle structures and used for inserting and swinging the circular arc radial fixed tooth buckle structure, the circular arc radial tooth buckle structure is mutually screwed and matched to form a screwing and clamping connection matching mode, and the upper control module and the lower filter container cabin are connected into a whole.

In view of the fact that the matching between the circular arc radial tooth fastener and the circular arc radial fixed tooth fastener structure related to the screwing and clamping connection mode is mutually corresponding, and therefore, no intrinsic difference exists between the circular arc radial tooth fastener and the circular arc radial fixed tooth fastener structure (only the connection structure is different), the scheme provides that in the screwing and clamping connection mode that the upper control module and the lower filter liner bin are mutually inserted and screwed and clamped, the structure arranged on the lower filter liner bin is uniformly determined to be the circular arc radial fixed tooth fastener structure; the matched part is determined as a circular arc radial tooth fastener, namely, the fourth screwing and clamping connection mode is regarded as a derivative mode of the third screwing and clamping connection mode.

In the above two connection modes of the screwing and clamping structure and the thread structure, the rotating fastener arranged on the upper control module, such as the bolt piece, the nut piece, the circular arc radial tooth fastener, is either an independent part separated from the upper control module or a movable part movably connected with the upper control module to form a whole and only limited to rotate on the upper control module.

Generally, the two connection modes of the screwing and clamping structure and the thread structure for the movable connection between the upper control module and the lower filter container cabin adopt a concealed mode, namely the connection mode is arranged below the inner side of the cover sealing device.

The movable connection device can be used on one water purifier in five modes of a swinging locking device, a locking hook device, an elastic buckling device, a rotating and clamping structure or a threaded structure, and can also be used on one water purifier in two to five movable connection modes.

Because the filter container is fixed in the lower filter container bin and connected into a whole, the filter container becomes a part of the lower filter container bin. In the present case, the structure or mechanism that the clear loose joint device set up the filter container storehouse under, including setting up on the filter container, can connect the cooperation through the loose joint device between the filter container in overhead control module and the filter container storehouse of putting down promptly, constitute an organic whole with overhead control module and the connection of putting down the filter container storehouse subsequently.

In the above embodiments, a displacement detection switch may be further provided to detect the position of the board or the tongue, and display or sound prompt the user when necessary. The displacement detection switch is either a mechanical microswitch or a photoelectric switch.

In the scheme, the electric control component can be arranged on the U-shaped module and can also be arranged on the cover lifting device. The cover lifting device is connected with the U-shaped module into a whole through the inserting plate. Therefore, the above-described mounting modes of the electronic control components are all regarded as "being placed on the U-shaped module".

In the present case, the boss structure can be a structure from top to bottom, and then plays a role of reinforcing ribs on the vertical side wall of the U-shaped module.

In the above embodiments, the plate-shaped control modules with the downward pressing structures and the notch supporting structures on the front and rear vertical side walls, or the plate-shaped control modules with the downward pressing structures and the notch supporting structures on the left and right vertical side walls, or the plate-shaped control modules with the downward pressing structures and the notch supporting structures on the front, rear, left and right vertical side walls are all regarded as the U-shaped control modules with the U-shaped base. In other words, if there is a plate-shaped control module with vertical sidewall structures corresponding to two sides, the control module also belongs to a U-shaped control module with a U-shaped base (including a derived base).

In the above embodiments, in order to increase or decrease the aesthetic feeling, four corners of the upper control module (U-shaped control module) and the lower filter chamber are set to be circular arc structures, and 1 to 4 closed decoration belt combination structures with certain width and height are arranged on the periphery of the upper end surface of the top cover. In order to enhance the rigidity of the top cover, one or two or all of the 1-4 decorative strip combined structures can be arranged into a decorative groove structure. For example, two inclined decorative strips are arranged in a triangular and vertical right-angle side combined structure at the inner side so as to form two parallel reinforcing ribs. In addition, the 1-4 decorative strip combined structures can be provided with inclined or U-shaped or n-shaped decorative strip combined structures. On the basis, for the structure provided with the U-shaped swing handle, the structure of the U-shaped swing handle and the top cover can be considered as a whole, and similarly, 1-4 closed decorative strip structures with certain width and height can be arranged to increase the rigidity and the integral aesthetic feeling of the top cover.

Claims

1. A capping device of a water purifier provided with an upper control module and a lower filter liner bin comprises a filter liner, a water passing pipeline, a control component, a lower filter liner bin provided with an upper bin port and used for placing and fixing the filter liner, an upper control module used for placing the control component and a loose joint device; the control part is a water passing control part or an electric control part or a combined device of the water passing control part and the electric control part; the water passing pipeline is connected with a plurality of filter liners and a water passing control component to form a filter channel; an upper control module integrated with the lower filter container bin by upper and lower insertion matching and connecting the lower filter container bin through a loose joint device, or a U-shaped control module provided with a U-shaped base, or a plate-shaped control module arranged in the lower filter container bin and positioned above the filter container, or a U-shaped control module arranged in the lower filter container bin and positioned above the filter container, and is characterized by also comprising a plurality of insertion tongues and insertion rods arranged in the insertion space and in the same insertion direction, a cover sealing device formed by connecting a top cover and a cover plate at a fixed distance into a whole through screws to form an interlayer of the built-in insertion plate, a swinging rod and a shaft seat provided with a swinging shaft, a shaft coupling provided with a driving part, a rear connecting structure and a radial swinging rod, a swinging mechanism formed by an inclined guide structure for controlling the axial movement of the shaft coupling, and a vertical side wall arranged on the U-shaped control module or the vicinity of the upper end bin opening of the lower filter container bin, and the pressing structure is arranged above the corresponding inserting tongue and is in inserting fit with the inserting tongue; arrange the driving medium of shaft coupling input on the axle bed in or directly or through the drive mechanism of establishing in addition with the swing arm linkage cooperation to two parts keep the swing linkage in the within range that the shaft coupling produced axial displacement, the draw structure swing joint cooperation that hookup structure and picture peg set up afterwards: the coupler swings along with the swing rod and is in contact fit with the inclined guide rail of the inclined guide structure through a radial swing rod of the coupler and drives the plugboards to be axially linked; the cover sealing device is matched with the U-shaped control module or the lower filter liner bin up and down, the oscillating rod drives the coupler to oscillate in the forward direction, the radial oscillating rod generates axial component force under the guiding action of the forward inclined guide rail in front of the oscillation in the oscillating process along with the coupler to drive the coupler and the inserting plate to move in the forward direction in the axial direction, the inserting tongue is inserted into the position below the lower pressing structure, namely, the inserting position is located, the upper end surface of the inserting tongue is in contact fit with the lower end surface of the lower pressing structure, and the cover sealing device is connected with the U-shaped control module or the lower filter liner bin into a whole; the swing control end swings reversely to force the radial swing rod to generate opposite axial component force under the guiding action of the reverse inclined guide rail in front of swing in the process of swinging reversely along with the coupler to drive the coupler and the inserting plate to move reversely in the axial direction, the inserting tongue moves back to a position which is not inserted below the downward pressing structure, namely, is positioned in the inserting vacant position, and then the cover sealing device is separated from the U-shaped control module or the lower filter liner bin up and down.

2. A capping device of a water purifier provided with an upper control module and a lower filter liner bin comprises a filter liner, a water passing pipeline, a control component, a lower filter liner bin provided with an upper bin port and used for placing and fixing the filter liner, an upper control module used for placing the control component and a loose joint device; the control part is a water passing control part or an electric control part or a combined device of the water passing control part and the electric control part; the water passing pipeline is connected with a plurality of filter liners and a water passing control component to form a filter channel; an upper control module which is matched with the lower filter container bin in an up-and-down inserting way and is connected with the lower filter container bin through a loose joint device to form an integral body, or a U-shaped control module provided with a U-shaped base, or a plate-shaped control module which is arranged in the lower filter container bin and is positioned above the filter container, or a U-shaped control module which is arranged in the lower filter container bin and is positioned above the filter container, and is characterized by also comprising a plurality of inserting tongues and inserting rods which are arranged in an inserting space and in the same inserting direction, a cover sealing device which is formed by connecting a top cover and a cover plate at a fixed distance into a whole through screws to form an interlayer of the built-in inserting plate, a swinging rod and a shaft seat which are provided with a swinging shaft, a coupling which is provided with a driving part and a rear connecting structure, a radial swinging rod and a return spring, a swinging mechanism which is formed by an inclined guide structure for controlling the axial movement of the coupling, and a vertical side wall which is arranged near, and the pressing structure is arranged above the corresponding inserting tongue and is in inserting fit with the inserting tongue; the transmission part of the input end of the shaft coupling arranged on the shaft seat is in linkage fit with the swing rod directly or through an additionally arranged transmission mechanism, the two parts keep swing linkage in the range of the axial displacement generated by the shaft coupling, and the rear connecting structure is in movable connection fit with the traction structure arranged on the inserting plate: the coupler swings along with the swing rod and is in contact fit with the inclined guide rail of the inclined guide structure through a radial swing rod of the coupler and drives the plugboards to be axially linked; two ends of the reset spring respectively act between the coupler and the sealing cover device; the cover sealing device is matched with the U-shaped control module or the lower filter liner bin up and down, and the radial swing rod is positioned at one end of the inclined guide rail under the action of the resilience force of the return spring; the oscillating rod drives the coupler to oscillate, so that the radial oscillating rod generates axial component force under the guiding action of the inclined guide rail in front of the oscillation in the oscillating process along with the coupler, and overcomes the resilience force of the return spring to move to the other end of the inclined guide rail; the plug board moves axially between two positions corresponding to the radial swing rod along with the coupler, the insertion tongue on the plug board or the position inserted below the downward pressing structure is located at the insertion position, the upper end face of the insertion tongue is in contact fit with the lower end face of the downward pressing structure, the sealing cover device and the U-shaped control module or the downward filter container bin are connected into a whole, or the plug board retreats to the position which is not inserted below the downward pressing structure and is located at the insertion vacant position, and the sealing cover device and the U-shaped control module or the downward filter container bin are separated up and down.

3. The cover closing device for a water purifier with an upper control module and a lower filter cartridge as claimed in claim 2, wherein the inclined guide structure is provided with a swing locking structure at a position corresponding to one end of the one-way inclined guide rail with a larger compression distance of the return spring, and the radial swing link is locked and swung into the locking structure to form an in-situ swing without axial displacement, so that the insertion tongue is stopped at the corresponding position.

4. The cover sealing device of a water purifier with an upper control module and a lower filter cartridge according to claim 1, 2 or 3, wherein the side wall of the U-shaped control module or the side wall of the lower filter cartridge is provided with a corresponding gap supporting structure for the lower pressing structure, and the height difference between the upper end surface of the gap supporting structure and the lower end surface of the lower pressing structure corresponds to the thickness of the inserting tongue on the inserting plate; the notch supporting structure and the pressing structure are in a mode corresponding to the lower vertical homothetic position and the upper vertical homothetic position or in a mode corresponding to the lower vertical malposition and the upper vertical malposition, wherein for the mode corresponding to the lower vertical homothetic position and the upper vertical homothetic position of the notch supporting structure and the pressing structure, the notch supporting structure is positioned right below the pressing structure, and the vertical side wall where the two structures are positioned vertically shields the splicing position formed between the notch supporting structure and the pressing structure; for the mode corresponding to the lower and upper vertical dislocation of the notch supporting structure and the downward pressing structure, the vertical side wall where the notch supporting structure and the downward pressing structure are located vertically exposes the splicing vacancy and the splicing position; when the cover sealing device is matched with the U-shaped control module or the lower filter liner bin up and down, the inserting tongue of the inserting plate corresponds to the notch supporting structure; the swing mechanism drives the inserting plate to move transversely so that the inserting tongue is inserted into the lower position of the pressing structure and is positioned at the inserting position; the swing mechanism drives the plug board to move reversely so that the plug tongue returns to the plug vacant position.

5. The cover sealing device for a water purifier with an upper control module and a lower filter cartridge as claimed in claim 4, wherein the cover sealing device is an external cover sealing device; a boss structure is arranged on the outer side of the side wall of the U-shaped control module or the lower filter liner bin, and a mode that a notch supporting structure and a lower pressing structure are staggered and correspond to each other in the lower direction and the upper direction is adopted; the boss structure corresponds to the notch supporting structure on the upper part, and the side wall of the external sealing cover device shields the boss structure in a corresponding inserting position state.

6. The cover closing device for a water purifying machine with an upper control module and a lower filter chamber as claimed in claim 4, wherein said U-shaped base has an inner handle structure with vertical side walls and an upper end cover at left and right sides, and a hold-down structure and a gap support structure are provided at the junction of the vertical side walls and the upper end cover structure of the inner handle structure, so that the insertion tongue of the insertion plate is inserted into the lower position of the upper end cover structure in a transverse direction, i.e. at the insertion position, and the upper end surface of the insertion tongue is in contact fit with the lower end surface of the upper end cover.

7. The cover closing device for a water purifier with an upper control module and a lower filter cartridge according to claim 4, wherein the left and right swing mechanisms and the two insertion plates with opposite insertion directions are arranged: a left insert plate and a right insert plate; aiming at each plugging position of the same U-shaped control module or the side wall of the lower filter tank bin, the left and right plug boards move in opposite plugging directions to enable plug tongues on the plug boards to move and plug into the plugging positions; the left and right plug boards respectively move reversely to make the plug tongues return to the plug vacant positions; the swing rods of the left swing mechanism and the right swing mechanism are respectively connected with another transverse handle to form a U-shaped swing handle; this U type swing handle drives two sets of balance staff and shaft coupling swing simultaneously through left and right both ends swing arm to two slope guide structure control left and right picture pegs that set up through the mirror image move with opposite grafting direction: the inserting tongues on the left inserting plate and the right inserting plate are inserted into the inserting positions or withdrawn to the inserting vacant positions at the same time.

8. The cover sealing device for a water purifier with an upper control module and a lower filter cartridge as claimed in claim 7, wherein the swing lever is a U-shaped swing handle; the sealing device is provided with a step platform structure matched with the U-shaped swing handle; the step platform structure is arranged at the outer edge of the top cover of the sealing device or at the central position of the top cover of the sealing device; the shaft seat is hinged and matched with the swing shaft of the U-shaped swing handle, or is arranged on the vertical side walls of the steps at the left and right outer sides of the step platform structure at the outer edge position of the top cover of the sealing device, or is arranged on the vertical side walls of the steps at the left and right inner sides of the step platform structure at the central position of the top cover, and the U-shaped swing handle is subjected to swing limit by an additionally arranged swing limit structure; the interlayer is arranged below the step platform structure.

9. The cover closing device for water purifier with upper control module and lower filter cartridge as claimed in claim 1, 2, 3, 5, 6, 7 or 8, wherein said inclined guiding structure has three control positions corresponding to the swinging of the U-shaped swing handle, and an associated inclined guide rail for controlling the radial swing link to swing between the three control positions for axial movement; the three control positions are, respectively, a first control position: the U-shaped swing handle is positioned at a horizontal position and the inserting tongue is positioned at a position corresponding to the inserting position; the second control position: the U-shaped swing handle is positioned at the inclined lifting position and the inserting tongue is positioned at the inserting vacant position; third control position: the U-shaped swing handle is positioned at a vertical position and the inserting tongue is positioned at a position corresponding to the inserting position; the U-shaped swing is carried out by swinging and linking the coupling through the swing shaft connected with the U-shaped swing, or swinging and linking the coupling through the connected swing shaft and the additionally arranged transition swing shaft, or swinging and linking the coupling through the linked swing shaft.

10. The cover sealing device for a water purifier with an upper control module and a lower filter cartridge as claimed in claim 9, further comprising a locking mechanism corresponding to the first and second control positions; the clamping mechanism is provided with two same convex structures or concave structures corresponding to the first and second control positions on the vertical side wall where the shaft seat is located, and is provided with a corresponding concave structure or convex structure at the side relevant position where the U-shaped swing handle is in swing fit with the vertical side wall, or is provided with a convex structure or concave structure on the vertical side wall where the shaft seat is located, and is provided with two same concave structures or convex structures corresponding to the first and second control positions at the side relevant position where the U-shaped swing handle is in swing fit with the vertical side wall; the convex structure or the rigid round head structure of the clamping mechanism is in rigid interference fit with the concave structure, or the rigid round head structure is in elastic contact fit with the concave structure arranged on the elastic base, or the movable rigid round head structure arranged on the elastic body is in elastic contact fit with the concave structure; in the process that the U-shaped swinging handle without axial displacement drives the swinging shaft to swing in situ, concave structures or convex structures are arranged on the side faces of the swinging arms on the two sides of the U-shaped swinging handle and convex structures or concave structures are arranged on the vertical side walls of the U-shaped swinging handle and are respectively clamped and matched at the positions corresponding to the first control position and the second control position.