Water purifier

Abstract

The present invention relates to a water purifier, which includes a whole machine housing assembly, a filter element assembly and a handle. The whole machine housing assembly is provided with an installation cavity and a limiting portion. The filter element assembly is detachably installed in the installation cavity. The handle is rotatably connected to the filter element assembly. The handle is provided with a locking portion and a disassembly portion. When the handle rotates forward relative to the filter element assembly, the locking portion presses against the limiting portion so that the filter element assembly is pressed tightly in the installation cavity. When the handle rotates reversely relative to the filter element assembly, the disassembly portion presses against the limiting portion so that the filter element assembly is loosened from the installation cavity. By means of a single handle, the operation requirements of both the locking and disassembly processes can be achieved simultaneously, simplifying the overall structure of the water purifier, thereby reducing the manufacturing cost and failure rate.

Description

Technical Field

[0001] The present invention relates to the technical field of water purification equipment, and particularly to a water purifier. Background Art

[0002] In the technical field of water purification equipment, considering the convenience of replacing the filter element and the convenience of assembly, generally, the filter element and the whole machine are in a detachable state. Sealing elements such as sealing rings are provided between the detachable filter element and the whole machine to ensure high sealing reliability when the filter element joint communicates with the water inlet on the whole machine. However, at the same time, the sealing element will also increase the resistance during the disassembly and assembly processes, so that a relatively large force needs to be provided during the disassembly process. Therefore, generally, different structures are respectively provided to reduce the force required in the two processes of disassembly and assembly, and improve the operation convenience. However, this will result in a relatively complex structure of the overall water purifier. On the one hand, the manufacturing cost of the whole machine is high, and on the other hand, the failure rate is relatively high. Summary of the Invention

[0003] Aiming at the problems of high manufacturing cost and high failure rate caused by the complex structure of the whole machine, the present invention provides a water purifier, which can reduce the force required in the disassembly and assembly processes with a more concise structure, thereby reducing the manufacturing cost and the failure rate.

[0004] A water purifier includes a whole machine housing assembly, a filter element assembly and a handle. The whole machine housing assembly is provided with an installation cavity and a limiting portion. The filter element assembly is detachably installed in the installation cavity. The handle is rotatably connected to the filter element assembly. The handle is provided with a locking portion and a disassembly portion. When the handle rotates forward relative to the filter element assembly, the locking portion presses against the limiting portion to press the filter element assembly tightly in the installation cavity. When the handle rotates backward relative to the filter element assembly, the disassembly portion presses against the limiting portion to loosen the filter element assembly from the installation cavity.

[0005] The above solution provides a water purifier, which can lock the filter element assembly in the installation cavity by arranging the locking portion and the disassembly portion on the handle, and at the same time, can utilize the relative pressure between the disassembly portion and the limiting portion to loosen the filter element assembly from the installation cavity during the disassembly process. With the help of a single handle, the operational requirements of both the locking and disassembly processes can be achieved simultaneously, simplifying the overall structure of the water purifier, thereby reducing manufacturing costs and failure rates. Specifically, during the assembly process, after the filter element assembly is initially placed in the installation cavity, the handle is rotated forward, and the locking portion gradually contacts and presses against the limiting portion. At this time, the limiting portion applies a force to the handle to lock the filter element assembly in the installation cavity, ultimately causing the filter element assembly to be pressed into the installation cavity. During the disassembly process, the handle is reversed, and the disassembly portion gradually contacts and presses against the limiting portion. The limiting portion of the handle provides a force to exit the installation cavity, ultimately causing the filter element assembly to loosen from the installation cavity.

[0006] In one embodiment, the handle is provided with a gripping portion, the position on the handle that is rotatably connected to the filter element assembly is a transfer point, the gripping portion, transfer point and locking portion on the handle constitute a first labor-saving lever, and the gripping portion, transfer point and disassembly portion on the handle constitute a second labor-saving lever.

[0007] In one embodiment, the handle includes a middle gripping section and connecting sections located at both ends of the middle gripping section, the gripping portion is located on the middle gripping section, the two connecting sections are clamped on both sides of the filter element assembly, the two connecting sections are provided with the transfer point, the two connecting sections include the locking portion and the disassembly portion, and the whole machine housing assembly is provided with two limiting portions, the limiting portions are arranged in a one-to-one correspondence with the locking portions, and the limiting portions are arranged in a one-to-one correspondence with the disassembly portions.

[0008] In one embodiment, a clearance groove is provided between the locking portion and the disassembly portion. When the handle rotates forward, the limiting portion gradually enters the clearance groove from the opening of the clearance groove until the locking portion is pressed against the side of the limiting portion close to the bottom wall of the installation cavity.

[0009] In one embodiment, the connecting section also includes a main body connecting the locking portion and the disassembly portion, the main body, the locking portion and the disassembly portion form the give way groove, the main body is connected to the middle gripping section, the position on the main body where the connection with the middle gripping section is closer to the disassembly portion relative to the locking portion, the transition point is located on the disassembly portion, and a reinforcing rib is provided at the connection between the main body and the locking portion.

[0010] In one embodiment, the end of the filter element assembly is provided with a snap-on assembly with elastic reset capability, and the middle grip section is provided with a bayonet matching the snap-on assembly. When the locking portion is pressed against the limiting portion so that the filter element assembly is pressed tightly in the installation cavity, the snap-on assembly can cooperate with the bayonet to lock.

[0011] In one embodiment, a button is provided on the filter element assembly, and the pressing direction of the button is along the axial direction of the installation cavity. The button and the snap assembly contact each other through an inclined surface, and the pressing movement of the button is converted into the radial movement of the snap assembly along the installation cavity, so that the snap assembly exits the bayonet.

[0012] In one embodiment, a slide buckle is provided at the end of the filter element assembly, and a socket matching the slide buckle is provided on the middle grip section. When the locking portion is pressed against the limiting portion so that the filter element assembly is pressed tightly in the installation cavity, the slide buckle can be slidably inserted into the socket.

[0013] In one embodiment, one of the slider and the middle grip section is provided with a buckle, and the other is provided with a mating piece that cooperates with the buckle. When the slider slides into the socket, the buckle is connected with the mating piece by a buckle.

[0014] In one embodiment, one of the connecting section and the filter element assembly is provided with a rotating shaft, and the other is provided with a slot, the rotating shaft is inserted into the slot, the side wall of the slot is provided with a recess, the rotating shaft is provided with a stop protrusion, and the stop protrusion is located in the recess, which is used to limit the rotatable angle of the handle relative to the filter element assembly.

[0015] In one embodiment, the surface of the limiting portion that presses against the locking portion is a first mating surface, and the surface perpendicular to the axis of the mounting cavity is a reference surface. The first mating surface is inclined relative to the reference surface. When the handle rotates forward, the position on the first mating surface that first contacts the locking portion is the starting locking position, and the position on the first mating surface that last contacts the locking portion is the ending locking position. The distance between the ending locking position and the bottom wall of the mounting cavity is greater than the distance between the starting locking position and the bottom wall of the mounting cavity.

[0016] In one embodiment, the surface of the limiting portion that presses against the disassembly portion is a second mating surface. When the filter element assembly is pressed tightly in the installation cavity, the disassembly portion and the second mating surface are spaced apart. After the handle is reversed at a preset angle, the disassembly portion contacts the second mating surface.

[0017] In one embodiment, the filter element assembly is provided with a connector, the connector is provided with a sealing ring, the connector is suspended outside the filter element assembly, the whole machine housing assembly is provided with an interface matching the connector, the opening direction of the interface is the same as the direction of the installation cavity, the filter element assembly is inserted into the installation cavity along the axial direction of the installation cavity. When the handle is rotated forward, the locking portion gradually presses against one side of the limiting portion close to the bottom wall of the installation cavity. When the handle is rotated backward, the disassembly portion gradually presses against one side of the limiting portion close to the opening of the installation cavity.

[0018] In one embodiment, one end of the filter element assembly where the connector is provided is the head end. A plurality of the connectors are arranged side by side at intervals at the head end. There are a plurality of the interfaces, and the interfaces are arranged in one-to-one correspondence with the connectors. The filter element assembly is provided with two support points for rotatably connecting with the handle. The support points are located at the head end, and the two support points are respectively located on both sides of the connector group. The longitudinal section passing through the central axis of the filter element assembly and parallel to the arrangement direction of the plurality of connectors arranged side by side is the first reference plane. The longitudinal section passing through the support point and parallel to the first reference plane is the second reference plane. The vertical distance between the connector group and the second reference plane is less than the vertical distance between the connector group and the first reference plane.

[0019] In one embodiment, the whole machine housing assembly includes a support shell and a water circuit board connected to each other. The installation cavity is formed in the support shell. The limiting portion is arranged on the water circuit board. The limiting portions are arranged on both the left and right sides of the water circuit board. The interface is formed on the water circuit board.

[0020] In one embodiment, the water circuit board is provided with two auxiliary boards. The two auxiliary boards are located on the left and right sides of the water circuit board. The auxiliary boards are suspended on the front surface of the water circuit board. The front surface of the water circuit board faces the outer peripheral surface of the support shell. The limiting portion includes a protrusion located on the side of the auxiliary board facing away from the support shell. The outer peripheral surface of the support shell is provided with a limiting rib, and the limiting rib limits the side of the auxiliary board close to the bottom wall of the installation cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention.

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0023] Figure 1 is a schematic structural diagram of the water purifier described in this embodiment;

[0024] Figure 2 is Figure 1 an exploded view of the water purifier shown;

[0025] Figure 3 is a cross-sectional view of the water purifier in the locked state;

[0026] Figure 4 is Figure 3 a partial enlarged view of part A in

[0027] Figure 5 and Figure 6 a cross-sectional view of the water purifier during the disassembly process;

[0028] Figure 7 is a schematic structural diagram of the filter element assembly in the water purifier described in this embodiment;

[0029] Figure 8 is a schematic structural diagram of the handle described in this embodiment;

[0030] Figure 9 is a schematic structural diagram of the water circuit board described in this embodiment;

[0031] Figure 10 is a schematic structural diagram of the water circuit board from another perspective;

[0032] Figure 11 is a cross-sectional view of the water purifier when the handle rotates relative to the filter element assembly to the limit position;

[0033] Figure 12 is Figure 11 a partial enlarged view of part B in

[0034] Figure 13 is a cross-sectional view of the snap component in the water purifier described in this embodiment;

[0035] Figure 14 is a schematic structural diagram of the snap component described in this embodiment;

[0036] Figure 15 is a schematic structural diagram of the water purifier described in another embodiment;

[0037] Figure 16 is a schematic structural diagram of the sliding buckle described in this embodiment.

[0038] Explanation of reference numerals:

[0039] 10. Water purifier; 11. Filter element assembly; 111. Slot; 1111. Depression; 112. Connector; 12. Handle; 121. Intermediate holding section; 1211. Holding portion; 1212. Bayonet; 122. Connecting section; 1221. Locking portion; 1222. Dismantling portion; 1223. Main body portion; 123. Relief groove; 124. Rotating shaft; 1241. Anti-rotation projection; 125. Reinforcing rib; 13. Whole machine housing assembly; 131. Support shell; 132. Water circuit board; 1321. Limiting portion; 1322. First mating surface; 1323. Second mating surface; 1324. Interface; 1325. Auxiliary board; 14. Outer shell cover; 15. Snap component; 151. First slider; 1511. First inclined surface; 152. Elastic reset member; 16. Button; 17. Slide fastener; 171. Snap. Detailed implementation manner

[0040] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the following will describe the detailed implementation manner of the present invention with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0041] As Figure 1 and Figure 2 shown, in one embodiment, a water purifier 10 is provided, which includes a filter element assembly 11 and a handle 12, and the handle 12 is rotatably connected to the filter element assembly 11. The position on the handle 12 where it is rotatably connected to the filter element assembly 11 is the transfer point, and the position on the filter element assembly 11 where it is rotatably connected to the handle 12 is the support point.

[0042] Furthermore, the water purifier 10 further includes a whole machine housing assembly 13. The whole machine housing assembly 13 is provided with an installation cavity, and the filter element assembly 11 is detachably installed in the installation cavity. Specifically, as Figures 1 to 6 shown, the filter element assembly 11 can be inserted into the installation cavity, and during the disassembly and assembly process, the handle 12 provides an axial force along the installation cavity for the filter element assembly 11, so that the filter element assembly 11 can be inserted into or pulled out of the installation cavity.

[0043] Furthermore, the whole machine housing assembly 13 is provided with a limiting portion 1321, and the handle 12 is provided with a locking portion 1221 and a dismantling portion 1222. As Figure 1 and Figure 3As shown, when the handle 12 rotates clockwise relative to the filter element assembly 11, the locking portion 1221 presses against the limiting portion 1321 to press the filter element assembly 11 tightly in the installation cavity. Specifically, the clockwise rotation mentioned here can refer to the counterclockwise rotation of the handle 12 at an angle as shown in Figure 1 and Figure 3 As shown in the figure, when the handle 12 rotates counterclockwise, the state when the locking portion 1221 just starts to contact the limiting portion 1321 is shown in Figure 1 As shown, and the state when the filter element assembly 11 is completely pressed tightly in the installation cavity and the locking portion 1221 is completely pressed below the limiting portion 1321 is shown in Figure 3 When the filter element assembly 11 is completely pressed tightly in the installation cavity and the locking portion 1221 is completely pressed below the limiting portion 1321.

[0044] As shown in Figure 5 and Figure 6 When the handle 12 rotates counterclockwise relative to the filter element assembly 11, the disassembly portion 1222 presses against the limiting portion 1321 to loosen the filter element assembly 11 from the installation cavity. Specifically, the counterclockwise rotation mentioned here can refer to the clockwise rotation of the handle 12 at an angle as shown in Figure 5 and Figure 6 As shown in the figure, when the handle 12 rotates clockwise, the state when the disassembly portion 1222 on the handle 12 initially contacts the limiting portion 1321 during counterclockwise rotation is shown in Figure 5 And the state when the handle 12 rotates to the point where the filter element assembly 11 is initially loosened is shown in Figure 6 When the handle 12 rotates to the point where the filter element assembly 11 is initially loosened.

[0045] By providing the locking portion 1221 and the disassembly portion 1222 on the handle 12, the filter element assembly 11 can be locked in the installation cavity, and during the disassembly process, the relative pressing between the disassembly portion 1222 and the limiting portion 1321 can be utilized to loosen the filter element assembly 11 from the installation cavity. With the help of a single handle 12, the operation requirements for both the locking and disassembly processes can be achieved simultaneously, simplifying the overall structure of the water purifier 10, thereby reducing the manufacturing cost and failure rate.

[0046] Specifically, in one embodiment, as shown in Figure 1 and Figure 3 During the assembly process, the locking portion 1221 presses against the side of the limiting portion 1321 close to the bottom wall of the installation cavity; during the disassembly process, as shown in Figure 5 and Figure 6 During the disassembly process, the disassembly portion 1222 presses against the side of the limiting portion 1321 away from the bottom wall of the installation cavity.

[0047] During the assembly process, after the filter element assembly 11 is initially placed in the installation cavity, rotate the handle 12 clockwise, as shown in Figure 1 and Figure 3As shown, the locking portion 1221 gradually contacts and presses against the limiting portion 1321. At this time, the limiting portion 1321 applies a force to the handle 12 to lock the filter element assembly 11 in the installation cavity, and finally the filter element assembly 11 is pressed tightly in the installation cavity. During disassembly, the handle 12 is reversed. As Figure 5 and Figure 6 shown, the disassembly portion 1222 gradually contacts and presses against the limiting portion 1321. The limiting portion 1321 provides a force for the handle 12 to withdraw from the installation cavity, and finally the filter element assembly 11 is loosened from the installation cavity.

[0048] As Figure 8 shown, in one embodiment, the handle 12 is provided with a gripping portion 1211. The gripping portion 1211, the transfer point, and the locking portion 1221 on the handle 12 form a first force-saving lever. Specifically, the surface of the locking portion 1221 that presses against the limiting portion 1321 is located on the side of the transfer point away from the gripping portion 1211. During assembly, as Figure 1 and Figure 3 shown, after applying a downward force to the gripping portion 1211, with the aid of the first force-saving lever, the limiting portion 1321 provides support for the locking portion 1221. The handle 12 rotates with the point where the locking portion 1221 presses against the limiting portion 1321 as the fulcrum, and the transfer point moves towards the direction close to the bottom wall of the installation cavity, synchronously driving the filter element assembly 11 connected to the handle 12 to be pressed into the installation cavity.

[0049] Optionally, in one embodiment, the surface of the locking portion 1221 that presses against the limiting portion 1321 can also be located between the gripping portion 1211 and the transfer point, as long as the gripping portion 1211, the transfer point, and the locking portion 1221 on the handle 12 form a first force-saving lever. For example, the transfer point is located at one end of the handle 12. When the filter element assembly 11 is initially placed in the installation cavity, the handle 12 can be adjusted to a position where the gripping portion 1211 is closer to the bottom wall of the installation cavity relative to the transfer point, so that the locking portion 1221 is located on the side of the limiting portion 1321 close to the bottom wall of the installation cavity. Then, a force in the direction away from the bottom wall of the installation cavity is applied to the gripping portion 1211. As the handle 12 rotates, the limiting portion 1321 provides a downward pressing force for the locking portion 1221, causing the transfer point to move towards the direction close to the bottom wall of the installation cavity, and then the filter element assembly 11 is installed and locked in the installation cavity.

[0050] Furthermore, as Figure 8As shown, the holding part 1211, the transfer point and the disassembly part 1222 on the handle 12 form a second labor-saving lever. Specifically, the surface of the disassembly part 1222 that presses against the limiting part 1321 is located on the side of the transfer point away from the holding part 1211. As Figure 3 shown is the state when the filter element assembly 11 is installed and pressed tightly in the installation cavity. At this time, the limiting part 1321 is in tight contact with the locking part 1221. When disassembly is required, as Figure 5 and Figure 6 shown, an upward lifting force is applied to the holding part 1211 of the handle 12. With the help of the second labor-saving lever, the disassembly part 1222 gradually presses against the limiting part 1321. During the reverse rotation of the handle 12, the limiting part 1321 provides support for the disassembly part 1222, so that the handle 12 rotates with the point where the disassembly part 1222 presses against the limiting part 1321 as the fulcrum, and the transfer point moves away from the bottom wall of the installation cavity, synchronously driving the filter element assembly 11 to be pulled out of the installation cavity.

[0051] Similarly, optionally, the surface of the disassembly part 1222 that presses against the limiting part 1321 can also be located between the transfer point and the holding part 1211. This is similar to the solution described above where the surface of the disassembly part 1222 that presses against the limiting part 1321 can also be located between the holding part 1211 and the transfer point. When the filter element assembly 11 is locked in the installation cavity, the disassembly part 1222 is located on the side of the limiting part 1321 away from the bottom wall of the installation cavity. At this time, a downward pressure is provided to the holding part 1211 in the direction close to the bottom wall of the installation cavity. The disassembly part 1222 presses against the limiting part 1321, and the transfer point moves away from the bottom wall of the installation cavity, and then the filter element assembly 11 is pulled out of the installation cavity.

[0052] Furthermore, in one embodiment, as Figure 1 and Figure 2 shown, the whole machine housing assembly 13 includes a support shell 131 and a water circuit board 132 that are connected to each other, and the installation cavity is formed in the support shell 131. Specifically, the limiting part 1321 can be located on the water circuit board 132, or the limiting part 1321 is located on the support shell 131.

[0053] More specifically, in one embodiment, as Figure 8As shown, the handle 12 includes an intermediate gripping section 121 and connecting sections 122 located at both ends of the intermediate gripping section 121. The gripping portion 1211 is located on the intermediate gripping section 121. The two connecting sections 122 are sandwiched on both sides of the filter element assembly 11. Transfer points are provided on both of the two connecting sections 122. Both of the two connecting sections 122 include a locking portion 1221 and a disassembly portion 1222. In other words, the handle 12 includes two first force-saving levers and two second force-saving levers. The gripping portion 1211, the transfer point, and the locking portion 1221 located on the same connecting section 122 form a first force-saving lever, and the gripping portion 1211, the transfer point, and the disassembly portion 1222 located on the same connecting section 122 form a second force-saving lever. Two of the limiting portions 1321 are provided on the whole machine housing assembly 13. The limiting portions 1321 are arranged in one-to-one correspondence with the locking portions 1221, and the limiting portions 1321 are arranged in one-to-one correspondence with the disassembly portions 1222.

[0054] The handle 12 is rotatably connected to the support points on the filter element assembly 11 through the transfer points on the connecting sections 122 at both ends. During the assembly process, the locking portions 1221 at both ends of the handle 12 come into contact with the two limiting portions 1321 synchronously. During the disassembly process, the disassembly portions 1222 at both ends of the handle 12 come into contact with the two limiting portions 1321 synchronously.

[0055] Further, in one embodiment, the limiting portion 1321 includes a limiting protrusion, as Figure 8 shown, a relief groove 123 is provided between the locking portion 1221 and the disassembly portion 1222, as Figure 1 and Figure 3 shown. When the handle 12 rotates forward, the limiting portion 1321 gradually enters the relief groove 123 from the opening of the relief groove 123 until the locking portion 1221 presses against one side of the limiting portion 1321 close to the bottom wall of the installation cavity. At this time, the disassembly portion 1222 is located on the side of the limiting portion 1321 away from the bottom wall of the installation cavity. When the handle 12 is rotated backward, as Figure 5 and Figure 6 shown, as the limiting portion 1321 exits the relief groove 123, the disassembly portion 1222 gradually presses against the limiting portion 1321.

[0056] Specifically, as Figure 8 shown, the opening of the relief groove 123 is located at the end faces of both ends of the handle 12. The relief groove 123 penetrates the inner side face and the outer side face of the handle 12, so that the locking portion 1221 and the disassembly portion 1222 are arranged at intervals. As Figure 3As shown, when the limiting part 1321 is located in the relief groove 123, the disassembly part 1222 and the locking part 1221 are respectively located on the upper and lower sides of the limiting part 1321. Here, the upper side of the limiting part 1321 refers to the side away from the bottom wall of the installation cavity, and the lower side refers to the side close to the bottom wall of the installation cavity.

[0057] Further, in one embodiment, as Figure 8 shown, the connecting section 122 further includes a main body section 1223 connecting the locking part 1221 and the disassembly part 1222. The main body section 1223 and the locking part 1221 and the disassembly part 1222 enclose the relief groove 123. The main body section 1223 is connected to the middle holding section 121. The position on the main body section 1223 where it is connected to the middle holding section 121 is closer to the disassembly part 1222 than the locking part 1221, and the transfer point is located on the disassembly part 1222. The middle holding section 121 is an arc section. The disassembly part 1222 is generally located on the extension lines of both ends of the middle holding section 121, while the cantilever formed by the main body section 1223 and the locking part 1221 is suspended outside the middle holding section 121.

[0058] As Figures 1 to 6 shown, the two connecting sections 122 in the shape of plate are located on both sides of the filter element assembly 11 and are respectively rotatably connected to the filter element assembly 11. Based on the fact that the position on the main body section 1223 where it is connected to the middle holding section 121 is closer to the disassembly part 1222 than the locking part 1221, and the transfer point is located on the disassembly part 1222. Therefore, as Figure 1 and Figure 3 shown, the locking part 1221 and the middle holding section 121 are arranged in a dislocation manner, and the cantilever formed by the connection of the locking part 1221 and the main body section 1223 is suspended outside the middle holding section 121. During the locking process, when the locking part 1221 presses against the limiting part 1321, the stress at the connection between the locking part 1221 and the main body section 1223 is relatively large and is prone to fracture. Based on this, further, as Figure 8 shown, a reinforcing rib 125 is provided at the connection between the main body section 1223 and the locking part 1221 to enhance the strength of the cantilever.

[0059] Further, in one embodiment, as Figure 8 shown, the thickness of the connection between the main body section 1223 and the locking part 1221 can also be set to be greater than the thickness of other parts on the locking part 1221, so as to increase the stress-bearing capacity at the connection between the locking part 1221 and the main body section 1223 and enhance the strength of the cantilever.

[0060] Furthermore, in one embodiment, one of the connecting section 122 and the filter element assembly 11 is provided with a rotating shaft 124, and the other is provided with a slot 111. Figure 8 As shown, the connecting section 122 is provided with a rotating shaft 124. Figure 11 and Figure 12 As shown, the filter element assembly 11 is provided with a slot 111. The rotating shaft 124 is inserted into the slot 111. The sidewall of the slot 111 is provided with a recess 1111. The rotating shaft 124 is provided with a rotation-stopping protrusion 1241. The rotation-stopping protrusion 1241 is located in the recess 1111 and is used to limit the rotation angle of the handle 12 relative to the filter element assembly 11. Specifically in this embodiment, the transfer point is located at the location of the rotating shaft 124, and the support point is located at the location of the slot 111.

[0061] During use, the handle 12 can only be rotated within a certain range, and the filter element assembly 11 can be disassembled and assembled within this range, further improving the convenience of operation. Figure 11 and Figure 12 As shown, during the disassembly process, when the handle 12 is reversed to the extreme position, the anti-rotation protrusion 1241 contacts the wall of the recess 1111 and cannot continue to rotate in the reverse direction. At this time, the handle 12 is roughly in a state of being distributed axially along the installation cavity, and the limiting protrusion has exited the clearance groove 123, which is convenient for the user to act on the middle grip section 121 to pull out the filter element assembly 11.

[0062] Furthermore, in one embodiment, Figures 1 to 7 As shown, the filter element assembly 11 is provided with an outer shell cover 14. When the filter element assembly 11 is installed in the installation cavity, the outer shell cover 14 covers the opening of the installation cavity.

[0063] Further, if Figure 13 As shown, the end of the filter element assembly 11 is provided with a snap assembly 15 with elastic reset capability. Figure 8 As shown, the middle grip section 121 is provided with a bayonet 1212 that matches the snap assembly 15. Figure 3 As shown, when the locking portion 1221 presses against the limiting portion 1321 so that the filter element assembly 11 is pressed tightly in the installation cavity, the snap assembly 15 can cooperate with the bayonet 1212 to lock.

[0064] After the snap assembly 15 is locked with the bayonet 1212, the handle 12 cannot rotate relative to the filter element assembly 11, so that the locking portion 1221 on the handle 12 is always pressed against the limiting portion 1321, ensuring that the filter element assembly 11 is reliably installed in the installation cavity.

[0065] Specifically, in one embodiment, as Figures 1 to 7 shown, the handle 12 is provided at the head end of the filter element assembly 11, the outer shell cover 14 is disposed on the end face of the head end of the filter element assembly 11, and the outer shell cover 14 covers the snap component 15 on the filter element assembly 11.

[0066] As Figure 13 shown, in one embodiment, when the filter element assembly 11 is locked in the installation cavity, the middle grip section 121 of the handle 12 just rotates to a position where it fits against the end of the filter element assembly 11. The snap component 15 is located inside the middle grip section 121, and the bayonet 1212 is located on the inner side face of the middle grip section 121 facing the snap component 15.

[0067] Further, in one embodiment, as Figure 13 shown, a button 16 is provided on the filter element assembly 11, and the pressing direction of the button 16 is along the axial direction of the installation cavity. As Figure 14 shown, the button 16 and the snap component 15 are in mutual contact through an inclined surface, converting the pressing movement of the button 16 into the movement of the snap component 15 in the radial direction of the installation cavity, so that the snap component 15 withdraws from the bayonet 1212.

[0068] When it is necessary to remove the filter element assembly 11, press the button 16, the snap component 15 moves radially along the installation cavity and withdraws from the bayonet 1212, and then reverse the handle 12, and then take out the filter element assembly 11.

[0069] Specifically, as Figure 14 shown, the snap component 15 is provided with a first inclined surface 1511, the first inclined surface 1511 is inclined with respect to the cross-section of the installation cavity, and the distance between the part of the first inclined surface 1511 far from the bottom wall of the installation cavity and the bayonet 1212 is greater than the distance between the part of the first inclined surface 1511 close to the bottom wall of the installation cavity and the bayonet 1212. The button 16 is located on one side of the first inclined surface 1511 facing the bayonet 1212. When pressing the button 16 in the direction close to the bottom wall of the installation cavity, the button 16 applies a downward force to the first inclined surface 1511, so that the snap component 15 moves in the direction of withdrawing from the bayonet 1212.

[0070] The outer shell 14 is provided with a first perforation and a second perforation. When the outer shell 14 covers the filter element assembly 11, the button 16 can be exposed outside the outer shell 14 through the first perforation, enabling the user to press the button 16, and the snap component 15 can pass through the second perforation and insert into the bayonet 1212.

[0071] Further, in one embodiment, as Figure 14 shown, the snap component 15 includes a first slider 151 and an elastic reset member 152. As Figure 13 shown, the first slider 151 is slidably disposed relative to the filter element assembly 11, and the sliding direction is parallel to the cross-section of the filter element assembly 11. The elastic reset member 152 is located between the first slider 151 and the filter element assembly 11, and is used to provide a reset force for the first slider 151 to slide in the direction close to the bayonet 1212. Specifically, the elastic reset member 152 can be a compression spring, and the axis of the compression spring is parallel to the cross-section of the filter element assembly 11.

[0072] Further, in another embodiment, as Figure 15 shown, the end of the filter element assembly 11 is provided with a sliding buckle 17, and the middle holding section 121 is provided with a socket matching the sliding buckle 17. When the locking portion 1221 presses against the limiting portion 1321 to press the filter element assembly 11 in the installation cavity, the sliding buckle 17 can slide into the socket.

[0073] When the handle 12 is rotated forward to lock the filter element assembly 11 in the installation cavity, the socket and the sliding buckle 17 are opposite. Manually push the sliding buckle 17 so that the sliding buckle 17 slides into the socket, so that the handle 12 cannot rotate relative to the filter element assembly 11, making the filter element assembly 11 reliably in the locked state.

[0074] Further, in one embodiment, one of the sliding buckle 17 and the middle holding section 121 is provided with a buckle 171, and the other is provided with a mating member cooperating with the buckle 171. When the sliding buckle 17 slides into the socket, the buckle 171 is buckled and connected with the mating member.

[0075] Specifically, as Figure 16 shown, the sliding buckle 17 is provided with the buckle 171. The middle holding portion 1211 is provided with a mating member. When the sliding buckle 17 is manually pushed to slide into the socket, the buckle 171 cooperates with the mating member. Without actively releasing the mating state of the buckle 171 and the mating member, the sliding buckle 17 cannot withdraw from the socket, and the handle 12 cannot rotate relative to the filter element assembly 11.

[0076] Further, in one embodiment, as Figures 1 to 6 and Figure 10 shown, the surface of the limiting portion 1321 that abuts against the locking portion 1221 is the first mating surface 1322. The surface perpendicular to the axis of the installation cavity is the reference surface, and the first mating surface 1322 is inclined with respect to the reference surface. When the handle 12 rotates forward, the position on the first mating surface 1322 that first contacts the locking portion 1221 is the starting locking position, and the position on the first mating surface 1322 that finally contacts the locking portion 1221 is the ending locking position. The distance between the ending locking position and the bottom wall of the installation cavity is greater than the distance between the starting locking position and the bottom wall of the installation cavity.

[0077] When the locking portion 1221 abuts against the first mating surface 1322 to lock the filter element assembly 11, as Figure 3 shown, the force provided by the first mating surface 1322 to the locking portion 1221 can be decomposed into a first component force F1 along the axial direction of the installation cavity and a second component force F2 parallel to the reference surface, effectively preventing the locking portion 1221 from separating from the limiting portion 1321. Specifically, as Figure 3 shown, the direction of the second component force F2 is generally distributed along the opening direction of the relief groove 123, so that the locking portion 1221 can block the limiting portion 1321 from exiting the relief groove 123.

[0078] Further, in one embodiment, as Figures 1 to 7 and Figure 9 shown, the surface of the limiting portion 1321 that abuts against the disassembly portion 1222 is the second mating surface 1323. As Figure 3 shown, when the filter element assembly 11 is pressed in the installation cavity, there is a spaced arrangement between the disassembly portion 1222 and the second mating surface 1323. In other words, at the initial stage of the reverse rotation of the handle 12, the disassembly portion 1222 and the second mating surface 1323 do not contact each other, and there is a certain virtual space between them, and the limiting portion 1321 does not hinder the reverse rotation of the handle 12. When the handle 12 rotates a preset angle, as Figure 4 shown, the disassembly portion 1222 just contacts the second mating surface 1323, and then the transfer point starts to move in the direction of exiting the installation cavity, improving the operation feel.

[0079] Specifically, in order to further improve the operation feel and avoid the situation of suddenly large or small resistance, as Figures 3 to 6As shown, the surface of the disassembly part 1222 that presses against the second mating surface 1323 is an arc convex surface. Thus, during the process of reversing the handle 12, the length of the resistance arm of the second force-saving lever gradually increases. When the disassembly part 1222 starts to press against the second mating surface 1323, the filter element assembly 11 just begins to disengage from the whole machine housing assembly 13. At this time, the force required for the filter element assembly 11 is relatively large, and the ratio of the power arm to the resistance arm is relatively large, so the force-saving ratio is relatively large. As the handle 12 continues to reverse, the force required to disassemble the filter element assembly 11 becomes smaller, while the ratio of the power arm to the resistance arm is smaller, and the force-saving ratio becomes smaller. Therefore, the force that the user needs to apply to the handle 12 changes less during the whole process, improving the operation feel.

[0080] Further, in one embodiment, as Figure 7 shown, a connector 112 is provided on the filter element assembly 11. The connector 112 is provided with a sealing ring, and the connector 112 is suspended outside the filter element assembly 11. The whole machine housing assembly 13 is provided with an interface 1324 that matches the connector 112, and the opening direction of the interface 1324 is the same as the orientation of the installation cavity.

[0081] Based on the fact that the connector 112 is provided with a sealing ring, during the process of assembling and disassembling the filter element assembly 11, the sealing ring will prevent relative movement between the connector 112 and the interface 1324. Thus, the force required for assembly and disassembly is relatively large, and further, it is necessary to rely on the first force-saving lever and the second force-saving lever, so that the force required to be applied to the handle 12 is smaller, improving the operation convenience.

[0082] Specifically, in one embodiment, when the handle 12 is rotated forward, the distance that the transfer point can move along the direction away from the bottom wall of the installation cavity is not less than the distance that the connector 112 is pulled out from the interface 1324; when the handle 12 is rotated backward, the distance that the transfer point can move along the direction close to the bottom wall of the installation cavity is not less than the distance that the connector 112 is inserted into the interface 1324.

[0083] Specifically, in one embodiment, as Figure 9 and Figure 10 shown, the interface 1324 is formed on the water circuit board 132. Compared with the force required for the filter element assembly 11 to be inserted into the installation cavity, the force required for the connector 112 to be inserted into the interface 1324 is relatively large. Therefore, in order to further improve the force-saving effect, the limiting part 1321 is arranged on the water circuit board 132. Moreover, it can effectively reduce the length of the intermediate dimension chain and reduce the requirement for manufacturing precision.

[0084] Further, in one embodiment, as Figures 1 to 7As shown, the front side of the water channel plate 132 faces the outer peripheral surface of the support shell 131. The limiting part 1321 is provided on the water channel plate 132, and the limiting part 1321 is provided on both the left and right sides of the water channel plate 132.

[0085] The two locking parts 1221 on the handle 12 respectively correspond to the two limiting parts 1321 one by one, and the two disassembly parts 1222 on the handle 12 respectively correspond to the two limiting parts 1321 one by one.

[0086] Further specifically, as Figure 9 and Figure 10 shown, the interface 1324 is formed on the top surface of the water channel plate 132.

[0087] Further, in one embodiment, as Figure 7 shown, one end of the joint 112 provided on the filter element assembly 11 is the head end, and a plurality of the joints 112 are arranged side by side at intervals. There are a plurality of the interfaces 1324, and the interfaces 1324 are arranged in one-to-one correspondence with the joints 112. The filter element assembly 11 is provided with two support points for rotatably connecting with the handle 12, and the support points are located at the head end. The two support points are respectively located on both sides of the joint group. The longitudinal section passing through the central axis of the filter element assembly 11 and parallel to the arrangement direction of the plurality of joints 112 side by side is the first reference plane, and the longitudinal section passing through the support points and parallel to the first reference plane is the second reference plane. The vertical distance h1 between the joint group and the second reference plane is less than the vertical distance h2 between the joint group and the first reference plane.

[0088] In other words, the support points are arranged closer to the joint group relative to the first reference plane, further strengthening the effect of the force on the handle 12 on the joint 112. Specifically, when the front side of the water channel plate 132 faces the support shell 131, the two support points are located on the filter element assembly 11 close to the water channel plate 132.

[0089] Further, in one embodiment, as Figure 9 and Figure 10 shown, the water channel plate 132 is provided with two auxiliary plates 1325, and the two auxiliary plates 1325 are located on the left and right sides of the water channel plate 132. The auxiliary plates 1325 are suspended on the front side of the water channel plate 132, and the limiting part 1321 includes a protrusion located on the side surface of the auxiliary plate 1325 facing away from the support shell 131.

[0090] When the water channel plate 132 is assembled on the support shell 131, the two auxiliary plates 1325 are located on both sides of the support shell 131. The two connecting sections 122 on the handle 12 are respectively located on both sides of the auxiliary plate 1325. The locking parts 1221 included in the connecting section 122 correspond to the limiting parts 1321 one by one. Similarly, the disassembling parts 1222 included in the connecting section 122 correspond to the limiting parts 1321 one by one.

[0091] Further, in one embodiment, as Figure 3 shown, the first mating surface 1322 of the limiting part 1321 is inclined with respect to the water channel plate 132. The distance between the part of the first mating surface 1322 far from the water channel plate 132 and the bottom wall of the installation cavity is greater than the distance between the part of the first mating surface 1322 close to the water channel plate 132 and the bottom wall of the installation cavity.

[0092] Further, a limiting rib is provided on the outer peripheral surface of the support shell 131. The limiting rib is limited to the side of the auxiliary plate 1325 close to the bottom wall of the installation cavity. Thus, when the disassembling part 1222 presses against the surface of the limiting part 1321 facing away from the bottom wall of the installation cavity, the limiting part 1321 and the auxiliary plate 1325 will not move towards the direction close to the bottom wall of the installation cavity, thereby providing a reaction force for the disassembling part 1222 to remove the filter element assembly 11 from the installation cavity, and at the same time making the joint 112 loose from the interface 1324.

[0093] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0094] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0095] In the present invention, unless otherwise clearly defined or limited, terms such as "installed", "connected", "linked", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0096] In the present invention, unless otherwise clearly defined or limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0097] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation.

[0098] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as falling within the scope described in this specification.

[0099] The above-described embodiments merely represent several implementation manners of the present invention, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the invention patent shall be subject to the appended claims.

Claims

1. A water purifier, characterized in that, It includes a whole-machine housing assembly, a filter element assembly and a handle. The whole-machine housing assembly is provided with an installation cavity and a limiting portion. The filter element assembly is detachably installed in the installation cavity. The handle is rotatably connected to the filter element assembly. The handle is provided with a locking portion and a disassembly portion. When the handle rotates forward relative to the filter element assembly, the locking portion presses against the limiting portion to press the filter element assembly tightly in the installation cavity. When the handle rotates backward relative to the filter element assembly, the disassembly portion presses against the limiting portion to loosen the filter element assembly from the installation cavity; The handle is provided with a holding portion. The position where the handle is rotatably connected to the filter element assembly is a transfer point. The holding portion, the transfer point and the locking portion on the handle form a first labor-saving lever. The holding portion, the transfer point and the disassembly portion on the handle form a second labor-saving lever; The surface of the limiting portion that presses against the locking portion is a first mating surface, and the surface perpendicular to the axis of the installation cavity is a reference surface. The first mating surface is inclined relative to the reference surface. When the handle rotates forward, the position on the first mating surface that first contacts the locking portion is the starting locking position, and the position on the first mating surface that last contacts the locking portion is the ending locking position. The distance between the ending locking position and the bottom wall of the installation cavity is greater than the distance between the starting locking position and the bottom wall of the installation cavity.

2. The water purifier according to claim 1, wherein The handle includes an intermediate holding section and connecting sections at both ends of the intermediate holding section. The holding portion is located on the intermediate holding section. The two connecting sections are clamped on both sides of the filter element assembly. The two connecting sections are both provided with the transfer points. The two connecting sections both include the locking portion and the disassembly portion. The whole-machine housing assembly is provided with two of the limiting portions. The limiting portions are arranged in one-to-one correspondence with the locking portions. The limiting portions are arranged in one-to-one correspondence with the disassembly portions.

3. The water purifier according to claim 2, characterized in that, A relief groove is provided between the locking portion and the disassembly portion. When the handle rotates forward, the limiting portion gradually enters the relief groove from the opening of the relief groove until the locking portion presses against the side of the limiting portion close to the bottom wall of the installation cavity.

4. The water purifier according to claim 3, characterized in that, The connecting section further includes a main body portion connecting the locking portion and the disassembly portion. The locking portion and the disassembly portion are arranged at intervals. The main body portion and the locking portion and the disassembly portion enclose the relief groove. The main body portion is connected to the intermediate holding section. The position where the main body portion is connected to the intermediate holding section is closer to the disassembly portion than to the locking portion. The transfer point is located on the disassembly portion. A reinforcing rib is provided at the connection between the main body portion and the locking portion.

5. The water purifier according to claim 2, wherein, The end of the filter element assembly is provided with a snap component having elastic reset ability. A bayonet matching the snap component is provided on the intermediate holding section. When the locking portion presses against the limiting portion to press the filter element assembly tightly in the installation cavity, the snap component can cooperate with the bayonet to lock.

6. The water purifier according to claim 5, characterized in that, A button is provided on the filter element assembly, and the pressing direction of the button is along the axial direction of the installation cavity. The button and the snap assembly contact each other through an inclined surface, converting the pressing movement of the button into the radial movement of the snap assembly along the installation cavity, so that the snap assembly exits the bayonet.

7. The water purifier according to claim 2, wherein A sliding buckle is provided at the end of the filter element assembly, and a socket matching the sliding buckle is provided on the middle grip section. When the locking portion is pressed against the limiting portion so that the filter element assembly is pressed tightly in the installation cavity, the sliding buckle can be slidably inserted into the socket.

8. The water purifier according to claim 7, characterized in that, One of the slide buckle and the middle grip section is provided with a buckle, and the other is provided with a matching piece that matches the buckle. When the slide buckle slides into the socket, the buckle is buckled and connected with the matching piece.

9. The water purifier according to claim 2, characterized in that, One of the connecting section and the filter element assembly is provided with a rotating shaft, and the other is provided with a slot, the rotating shaft is inserted into the slot, the side wall of the slot is provided with a recess, the rotating shaft is provided with a stop protrusion, and the stop protrusion is located in the recess, which is used to limit the rotatable angle of the handle relative to the filter element assembly.

10. The water purifier according to any one of claims 1 to 9, characterized in that, The surface on the limiting portion that presses against the disassembly portion is a second mating surface. When the filter element assembly is pressed tightly in the installation cavity, the disassembly portion and the second mating surface are spaced apart. After the handle is reversed by a preset angle, the disassembly portion contacts the second mating surface.

11. The water purifier according to any one of claims 1 to 9, characterized in that, The filter element assembly is provided with a joint, and the joint is provided with a sealing ring. The joint is suspended outside the filter element assembly, and the entire machine housing assembly is provided with an interface matching the joint. The opening direction of the interface is consistent with the direction of the installation cavity. The filter element assembly is inserted into the installation cavity along the axial direction of the installation cavity. When the handle rotates forward, the locking part gradually presses against the side of the limiting part close to the bottom wall of the installation cavity. When the handle is reversed, the disassembly part gradually presses against the side of the limiting part close to the opening of the installation cavity.

12. The water purifier according to claim 11, characterized in that, The end of the filter element assembly on which the connector is provided is the head end, and the head end is provided with multiple connectors spaced side by side, and there are multiple interfaces, and the interfaces are arranged in a one-to-one correspondence with the connectors. The filter element assembly is provided with two support points for rotationally connecting with the handle, and the support point is located at the head end. Multiple connectors form a connector group, and two support points are respectively located on both sides of the connector group. The longitudinal section passing through the central axis of the filter element assembly and parallel to the direction in which multiple connectors are arranged side by side is the first reference plane, and the longitudinal section passing through the support point and parallel to the first reference plane is the second reference plane. The vertical distance between the connector group and the second reference plane is smaller than the vertical distance between the connector group and the first reference plane.

13. The water purifier according to claim 11, wherein, The entire housing assembly includes a supporting shell and a waterway plate connected to each other. The installation cavity is formed in the supporting shell. The limiting portion is provided on the waterway plate. The limiting portion is provided on both the left and right sides of the waterway plate. The interface is formed on the waterway plate.

14. The water purifier according to claim 13, characterized in that, The waterway plate is provided with two auxiliary plates, which are located on the left and right sides of the waterway plate. The front of the waterway plate faces the outer peripheral surface of the supporting shell, and the auxiliary plate is suspended on the front of the waterway plate. The limiting portion includes a protrusion located on the side of the auxiliary plate facing away from the supporting shell, and the outer peripheral surface of the supporting shell is provided with a limiting rib, which is limited to the side of the auxiliary plate close to the bottom wall of the installation cavity.

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