A water inlet assembly and a washing machine

Abstract

This invention belongs to the field of washing machine technology and discloses a water inlet assembly and a washing machine. The water inlet assembly includes: a water inlet shaft with a hollow water inlet channel and a recessed groove on its outer wall; a water inlet end cap with a sleeve portion fitted onto the water outlet end of the water inlet shaft; a limiting member, which is radially movable relative to the sleeve portion and can be engaged / disengaged from the groove; and a locking mechanism for maintaining the limiting member in the groove. In the water inlet assembly of this invention, the locking mechanism keeps the limiting member engaged in the groove on the water inlet shaft, thereby fixing the water inlet end cap on the water inlet shaft and preventing it from falling off. By operating the locking mechanism to release the locking effect on the limiting member, the limiting member is disengaged from the groove, and the water inlet end cap can be removed. The operation is simple and convenient.

Description

Technical Field

[0001] This invention belongs to the field of washing machines, specifically, it relates to a water inlet component and a washing machine. Background Technology

[0002] Existing washing machines generally consist of a fixed outer drum and a rotating inner drum. The inner drum has multiple drainage holes on its wall, allowing it to connect with the outer drum. However, during the washing process, the washing water between the inner and outer drums is not utilized, resulting in waste. Simultaneously, some dirt generated during the washing process remains between the inner and outer drums, making it difficult to clean. Over time, this accumulation can contaminate the washing water and affect washing performance.

[0003] To address the aforementioned issues, existing technology proposes a washing machine without a drain hole on the inner drum. This creates a sealed space inside the inner drum during the washing process, allowing it to independently hold the washing water. This avoids water accumulation between the inner and outer drums, saving water consumption and significantly reducing dirt buildup. However, because the inner drum is enclosed during washing, the traditional method of introducing water into the inner drum by introducing water into the outer drum is no longer applicable.

[0004] To achieve water inlet in the aforementioned holeless drum washing machine, existing technologies propose a hollow drive shaft connected to the drum, through which water enters the drum. To further increase the water inlet coverage area and improve the inlet effect, a water inlet end cap is installed at the end of the drive shaft that extends into the drum, causing the water flow to be blocked and splashed. However, since the water inlet end cap is located inside the drum, it may rub against and collide with the load inside the drum during washing machine operation. To prevent the water inlet end cap from detaching from the drive shaft, the connection structure between the water inlet end cap and the drive shaft must be robust and reliable. A simple plug-in structure may not achieve the desired level of strength, but installing the water inlet end cap using screws or other connectors is complex and cumbersome, making it inconvenient to inspect and replace parts of the washing machine's water inlet components.

[0005] In view of this, the present invention is hereby proposed. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a water inlet assembly and a washing machine, wherein the water inlet end cover and the water inlet shaft have a quick-connect structure, which can realize the quick installation and disassembly of the water inlet end cover. After the water inlet end cover and the water inlet shaft are connected, they can achieve self-locking, so that the installation of the water inlet end cover is firm and reliable, and the installation and disassembly operation is simple.

[0007] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by the present invention is as follows:

[0008] A water inlet assembly, comprising:

[0009] The water inlet shaft has a hollow water inlet channel and a recessed groove on its outer wall;

[0010] The inlet end cap has a sleeve portion that is fitted onto the outlet end of the inlet shaft;

[0011] The limiting member is mounted on the sleeve portion and can move relative to it radially, and can be engaged / disengaged from the slot.

[0012] A locking mechanism is used to keep the limiting member in a limited position when it is engaged in the slot.

[0013] Furthermore, the locking mechanism includes:

[0014] A locking sleeve, which is axially movable along the water inlet shaft, is fitted onto the sleeve portion and has a locking portion that abuts against the limiting member, keeping the limiting member in a limited position where it is engaged in the slot.

[0015] The elastic element has one end abutting against the water inlet end cap and the other end abutting against the locking sleeve, maintaining the relative position of the locking sleeve and the sleeve part, so that the locking part and the limiting element are kept in abutting state;

[0016] Preferably, the lock sleeve is at least partially made of a material that can be attracted by a magnet.

[0017] Furthermore, the locking sleeve extends a certain length along the axial direction, and the middle region of the inner wall of the locking sleeve protrudes to form the locking part, and a clearance space is formed between the locking part and one end of the locking sleeve;

[0018] The locking sleeve moves until the locking part and the limiting member intersect axially, and the limiting member moves radially outward along the sleeve part to disengage from the slot and at least partially enter the clearance space.

[0019] Furthermore, the socket includes a small-diameter section for installing a limiting member and a large-diameter section disposed at one end of the small-diameter section, wherein the clearance space and the large-diameter section are respectively located at both ends of the small-diameter section;

[0020] The connection between the small diameter section and the large diameter section forms a limiting surface. The elastic element is a spring sleeved on the small diameter section. One end of the spring abuts against the limiting surface, and the other end abuts against the surface of the locking part facing the limiting surface.

[0021] Furthermore, a limiting mechanism protruding from its outer wall is provided on the small diameter section, and the surface of the locking part facing away from the limiting surface abuts against the limiting mechanism;

[0022] Preferably, a recessed retaining ring groove is provided on the outer wall of the small diameter section, and the limiting mechanism includes a retaining ring disposed in the retaining ring groove, the retaining ring protruding from the outer wall of the small diameter section.

[0023] Furthermore, the water inlet cap includes a bottom wall and a side wall surrounding the bottom wall, and the sleeve and the locking sleeve fitted on the sleeve are located in the hollow cavity formed by the bottom wall and the side wall; the side wall has a disassembly hole that connects the hollow cavity with the external space.

[0024] Preferably, the surface of the lock sleeve is provided with a convex / concave disassembly portion;

[0025] More preferably, the disassembly / assembly part is a recessed disassembly / assembly groove provided on the outer side wall of the lock sleeve.

[0026] Furthermore, the sleeve portion is provided with at least one ball hole, and the limiting member is a ball installed in the ball hole;

[0027] Preferably, the inner diameter of the ball bearing hole on the inner wall of the sleeve is smaller than the diameter of the ball bearing.

[0028] Furthermore, a sealing element is provided between the inner wall of the sleeve and the outer wall of the water inlet shaft;

[0029] Preferably, the sealing element is sleeved on the water inlet shaft and located between the slot and the water outlet end of the water inlet shaft.

[0030] Another object of the present invention is to provide a washing machine, including an inner drum and the water inlet assembly described above; an installation hole is provided at the center of the bottom of the inner drum, and the water outlet end of the water inlet shaft passes through the installation hole and is installed inside the inner drum and connected to the water inlet end cover.

[0031] Furthermore, the diameter of the mounting hole is larger than the outer diameter of the sleeve part near the bottom of the cylinder, and the outer periphery of the mounting hole extends into the inner cylinder along the axial direction of the water inlet shaft to form a flange surrounding the sleeve part; there is a certain gap between the inner side of the flange and the outer wall of the sleeve part.

[0032] Preferably, the locking mechanism includes a locking sleeve fitted on the sleeve portion, the locking sleeve having a locking portion that abuts against the limiting member, the locking portion protruding from the inner wall of the locking sleeve, forming a clearance space between the locking portion and the end of the locking sleeve near the bottom of the cylinder;

[0033] The flange extends into the clearance space, and there is a certain distance between the surface of the locking part facing the bottom of the cylinder and the extended end of the flange, as well as between the outer side of the flange and the inner wall of the lock sleeve.

[0034] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art.

[0035] In this invention, the water inlet cap is fixed to the water inlet shaft by a limiting member engaging with a groove on the water inlet shaft. A locking mechanism keeps the limiting member engaged in the groove, ensuring the water inlet cap is securely connected to the end of the water inlet shaft. To remove the water inlet cap, simply operate the locking mechanism to release the limiting member from the groove, allowing the cap to be removed. The operation is simple and easy.

[0036] In this invention, the locking mechanism consists of a locking sleeve and an elastic element. The user can move the locking sleeve to change the relative position of the locking part and the limiting part, thereby releasing the locking part's restraining effect on the limiting part and allowing the limiting part to move radially outward, thus enabling the installation and removal of the water inlet cap. When the user releases the locking sleeve, the sleeve moves under the action of the elastic element, pushing the limiting part into the groove on the water inlet shaft, thereby achieving automatic locking between the water inlet cap and the water inlet shaft.

[0037] In this invention, the structure of the lock sleeve is designed to form a clearance space on one side of the locking part. When the limiting member is dislodged from the slot, it at least partially enters the clearance space. Thus, the locking sleeve itself can block the limiting member and prevent it from falling off the sleeve part.

[0038] In this invention, a flange is provided around the bottom mounting hole of the inner cylinder, and the flange extends into the clearance space formed between the locking sleeve and the sleeve, thereby forming a complex flow path around the mounting hole, so that water in the inner cylinder will not easily leak out from the mounting hole.

[0039] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0040] The accompanying drawings, as part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention, but do not constitute an undue limitation of the invention. Obviously, the drawings described below are merely some embodiments, and those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings:

[0041] Figure 1 This is a schematic diagram of the water inlet assembly installed on the inner cylinder in an embodiment of the present invention;

[0042] Figure 2 This is the present invention. Figure 1 A partial schematic diagram of section AA;

[0043] Figure 3 This is the present invention. Figure 1 A partial schematic diagram of the BB section;

[0044] Figure 4This is a schematic diagram of the water inlet shaft and the bottom of the inner cylinder after installation in an embodiment of the present invention;

[0045] Figure 5 This is an exploded view of the water inlet component structure in an embodiment of the present invention;

[0046] Figure 6 This is an exploded view of the water inlet component structure from another perspective in an embodiment of the present invention;

[0047] Figure 7 This is a schematic diagram of one side of the bottom wall of the water inlet end cap in an embodiment of the present invention;

[0048] Figure 8 This is the present invention. Figure 7 A schematic diagram of the CC section.

[0049] In the diagram: 100, Water inlet cap; 101, Main water inlet; 102, First water inlet; 103, Second water inlet; 104, Air vent; 105, Disassembly / removal hole; 111, Bottom wall; 112, Side wall; 113, Transition surface; 121, Water inlet cavity; 122, Air vent; 131, Protrusion; 132, Rib; 140, Connecting part; 141, Limiting surface; 142, Clip. 143. Spring groove; 144. Sealing groove; 145. Ball bearing hole; 146. Small diameter section; 150. Large diameter section; 160. Ball bearing; 170. Snap ring; 200. Seal; 201. Locking sleeve; 202. Locking part; 202. Disassembly groove; 210. Elastic element; 300. Water inlet shaft; 301. Snap groove; 400. Inner cylinder; 410. Cylinder bottom; 411. Flanged edge; 420. Tripod.

[0050] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the invention in any way, but rather to illustrate the concept of the invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0051] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0052] In the description of this invention, it should be noted that the terms "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0053] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0054] Example 1

[0055] like Figures 1 to 8 As shown, this embodiment provides a water inlet assembly and a washing machine including the water inlet assembly.

[0056] The water inlet assembly in this embodiment includes:

[0057] The water inlet shaft 300 has a hollow water inlet channel and a recessed groove 301 on its outer wall;

[0058] The inlet end cap 100 has a sleeve portion 140 that is fitted onto the outlet end of the inlet shaft 300;

[0059] The limiting member is mounted on the sleeve 140 in a radial direction and can move relative to it, and can be engaged / disengaged from the slot 301;

[0060] A locking mechanism is used to keep the limiting member in the limiting state of being engaged in the slot 301.

[0061] In the above scheme, a movable limiting member is provided on the sleeve part 140. The limiting member and the sleeve part 140 can move relative to each other, thereby realizing the insertion into or removal from the slot 301. The locking structure can keep the limiting member in the slot 301, thus ensuring that the water inlet cap 100 is securely connected to the water outlet end of the water inlet shaft 300 and will not fall off. When it is necessary to remove the water inlet cap 100, simply operate the locking mechanism to release its effect on the limiting member, and the limiting member can be removed from the slot 301. At this time, the water inlet cap 100 can be removed from the water inlet shaft 300.

[0062] In a further embodiment of this invention, the locking mechanism includes:

[0063] The locking sleeve 200 is axially movable along the water inlet shaft 300 and is fitted onto the sleeve portion 140. It has a locking portion 201 that abuts against the limiting member, keeping the limiting member in a limited position where it is engaged in the slot 301.

[0064] The elastic element 210 abuts against the water inlet end cap 100 at one end and against the locking sleeve 200 at the other end, maintaining the relative position of the locking sleeve 200 and the sleeve portion 140, so that the locking portion 201 and the limiting element remain in abutting state.

[0065] In the specific solution of this embodiment, at least one ball hole 144 is provided on the sleeve portion 140, and the limiting member is a ball 150 installed in the ball hole 144.

[0066] Preferably, the inner diameter of the ball hole 144 on the inner wall of the sleeve portion 140 is smaller than the diameter of the ball 150, so as to prevent the ball 150 from coming out of the inside of the sleeve portion 140 after the water inlet cap 100 is removed.

[0067] In this embodiment, the ball bearing 150 is axially confined within the ball bearing hole 144 of the sleeve portion 140, and the locking sleeve 200 can move left and right on the sleeve portion 140. When installing the water inlet end cap 100, the locking sleeve 200 is moved to the right, so that the locking part 201 is axially intersected with the ball bearing hole 144. At this time, the ball bearing 150 can move freely in the radial direction, thereby allowing the water inlet shaft 300 to be inserted into the sleeve portion 140. After installation, the locking sleeve 200 is released, and the locking sleeve 200 moves to the left to reset under the elastic force of the elastic member 210. The locking part 201 gradually approaches the ball bearing hole 144, pushing the ball bearing 150 inside to move inward until the ball bearing 150 is engaged in the slot 301.

[0068] If the inlet cap 100 is pulled directly to the right at this time, the ball bearing 150 cannot move outward because it is abutting against the locking part 201. It is thus stuck in the groove 301 on the inlet shaft 300, preventing the sleeve part 140 from moving axially. Therefore, the inlet cap 100 cannot be directly removed, and the connection is secure. By moving the locking sleeve 200 appropriately to the right, the locking part 201 moves to the right to open the ball bearing hole 144, and the ball bearing 150 is no longer limited. Then, by pulling the inlet cap 100 to the right again, the ball bearing 150 can be dislodged from the groove 301, allowing the inlet cap 100 to be removed from the inlet shaft 300 as a whole.

[0069] In a preferred embodiment, the lock sleeve 200 is at least partially made of a material that can be attracted by a magnet.

[0070] In this embodiment, the water inlet cap 100 has a bowl-shaped structure. When installed on the inner drum 400 of the washing machine, the water inlet cap 100 is inverted on the bottom 410 of the inner drum 400, and the locking sleeve 200 is covered inside the water inlet cap 100. The locking sleeve 200 is made of a material that can be attracted by a magnet, so that the locking sleeve 200 can be moved by a magnet outside the water inlet cap 100, which solves the problem of not being able to directly move the locking sleeve 200.

[0071] Specifically, the water inlet end cap 100 includes a bottom wall 111 and a side wall 112 surrounding the bottom wall 111. The socket 140 and the locking sleeve 200 fitted on the socket 140 are located in the hollow cavity formed by the bottom wall 111 and the side wall 112.

[0072] Another solution for moving the lock sleeve 200 in this embodiment is to open a disassembly hole 105 on the side wall 112 to connect the hollow cavity with the external space, insert a tool into the hollow cavity through the disassembly hole 105, and move the lock sleeve 200 by using the tool.

[0073] Preferably, the surface of the lock sleeve 200 is provided with a protruding or recessed disassembly part, which can be moved by using a tool to move the lock sleeve 200. Since the disassembly part protrudes or recesses from the surface of the lock sleeve 200, it is easier to apply force to the lock sleeve 200 with a tool, thereby realizing the movement of the lock sleeve 200.

[0074] More preferably, the disassembly / assembly part is a disassembly / assembly groove 202 recessed on the outer side wall of the lock sleeve 200. A tool is inserted through the disassembly / assembly hole 105 and its end is inserted into the disassembly / assembly groove 202, thereby actuating the lock sleeve 200. This operation is simple and easy to implement.

[0075] In a further embodiment, the locking sleeve 200 extends a certain length along the axial direction, and a locking part 201 is formed by a protrusion in the middle region of the inner wall of the locking sleeve 200. An avoidance space is formed between the locking part 201 and the left end of the locking sleeve 200.

[0076] When the locking sleeve 200 moves to the point where the locking part 201 and the ball 150 are axially intersected, and the ball 150 moves radially outward along the sleeve part 140 to disengage from the slot 301, it at least partially enters the clearance space.

[0077] In the above scheme, the inner surface of the locking part 201 is in close contact with the outer wall of the sleeve part 140. When the locking part 201 and the ball hole 144 are axially opposite each other, the inner surface of the locking part 201 abuts against the ball 150. When the locking part 201 moves to the right with the locking sleeve 200, the axial positions of the locking part 201 and the ball hole 144 are staggered, and the ball 150 can move radially outward along the sleeve part 140, so that the ball 150 protrudes from the outside of the sleeve part 140.

[0078] The left end of the locking sleeve 200 has a clearance space to allow the ball 150 to protrude from the sleeve portion 140. At the same time, the distance between the inner wall of the left end of the locking sleeve 200 and the outer wall of the sleeve portion 140 is smaller than the diameter of the ball 150, which can form a circumferential barrier on the outside of the sleeve portion 140 to prevent the ball 150 from completely dislodging from the ball hole 144 and falling out of the gap between the locking sleeve 200 and the sleeve portion 140.

[0079] Specifically, the inner diameter of the ball hole 144 on the outer wall of the sleeve 140 is also smaller than the diameter of the ball 150. Within a certain range along the radial direction of the sleeve 140, the inner diameter of the ball hole 144 is greater than or equal to the diameter of the ball 150. This allows the ball 150 to have a certain range of free movement within the ball hole 144 along the radial direction of the sleeve 140, enabling it to engage with and disengage from the slot 301. At the same time, because the inner diameters at both ends of the ball hole 144 are relatively small, the ball 150 can be confined within the ball hole 144 and will not fall out.

[0080] In a further embodiment, the socket 140 includes a mounting limiting member, namely a small-diameter section 145 of the ball bearing 150, and a large-diameter section 146 disposed at one end of the small-diameter section 145. Specifically, the clearance space is located at the left end of the small-diameter section 145, and the large-diameter section 146 is disposed at the right end of the small-diameter section 145.

[0081] A limiting surface 141 is formed at the connection between the small diameter section 145 and the large diameter section 146. The elastic element 210 is a spring sleeved on the small diameter section 145. One end of the spring abuts against the limiting surface 141, and the other end abuts against the surface of the locking part 201 facing the limiting surface 141.

[0082] Specifically, the inner diameter of the left end of the lock sleeve 200 is larger than the outer diameter of the large diameter section 146 on the sleeve portion 140, forming an accommodating space between the inner side of the left end region of the lock sleeve 200 and the outer side of the small diameter section 145 of the sleeve portion 140. The elastic element 210 is spring-loaded on the small diameter section 145 and located inside the accommodating space, applying a leftward elastic force to the lock sleeve 200.

[0083] Furthermore, a limiting mechanism protruding from its outer wall is provided on the small diameter section 145, and the surface of the locking part 201 facing away from the limiting surface 141 abuts against the limiting mechanism.

[0084] Preferably, a recessed retaining ring groove 142 is provided on the outer wall of the small diameter section 145, and the limiting mechanism includes a retaining ring 160 disposed in the retaining ring groove 142, the retaining ring 160 protruding from the outer wall of the small diameter section 145.

[0085] The limiting mechanism, namely the snap ring 160, is set at the left end of the sleeve 140 to limit the locking sleeve 200 and prevent the locking sleeve 200 from falling off the sleeve 140.

[0086] In this embodiment, a sealing element 170 is provided between the inner wall of the sleeve portion 140 and the outer wall of the water inlet shaft 300.

[0087] Preferably, the sealing element 170 is sleeved on the water inlet shaft 300 and located between the slot 301 and the water outlet end of the water inlet shaft 300.

[0088] Specifically, a recessed sealing groove 143 is provided on the inner wall of the sleeve portion 140, and the sealing element 170 is installed in the sealing groove 143. The inner wall of the sealing element 170 is interference-fitted with the water inlet shaft 300, and when the sleeve portion 140 is sleeved onto the water outlet end of the water inlet shaft 300, the inner wall of the sealing element 170 fits and seals against the outer wall of the water inlet shaft 300.

[0089] In detail, the inlet end cap 100 is provided with at least a main inlet 101 connecting the hollow cavity to the external space, and a plurality of first inlets 102 arranged around the main inlet 101. The water flows into the hollow cavity of the inlet end cap 100 from the outlet end of the inlet shaft 300, and then flows out into the inner cylinder 400 through the main inlet 101 and the first inlets 102. Since the inlet shaft 300 is installed by passing through the bottom 410 of the cylinder from the outside of the inner cylinder 400, there is inevitably a gap between the bottom 410 of the cylinder and the inlet shaft 300. The sealing element 170 prevents the water flowing out of the outlet end of the inlet shaft 300 from flowing to the left through the gap between the inlet shaft 300 and the sleeve part 140, and thus leaking out from the bottom 410 of the cylinder.

[0090] The washing machine provided in this embodiment includes an inner drum 400 and the water inlet assembly described above. An installation hole is provided at the center of the bottom 410 of the inner drum 400. The water outlet end of the water inlet shaft 300 passes through the installation hole and is installed inside the inner drum 400 and connected to the water inlet end cover 100.

[0091] Specifically, a tripod 420 is fixedly connected to the outside of the bottom 410 of the cylinder, and the water inlet shaft 300 is connected to the tripod 420. The water inlet shaft 300 is driven to rotate by the drive device, and thus the inner cylinder 400 can be rotated through the tripod 420.

[0092] In this embodiment, the inner drum 400 can independently hold water during washing and rinsing. Specifically, the inner drum 400 does not have dewatering holes, but only several drain outlets, each equipped with a centrifugal sealing device. During washing and rinsing, the centrifugal sealing device blocks the drain outlets, and the inner drum 400 also has a sealing door at its opening, thus creating a sealed chamber structure inside the inner drum 400. During drainage, the inner drum 400 is driven to rotate at a certain speed, causing the centrifugal sealing device to open the drain outlets under centrifugal force, allowing the water inside the drum to be discharged through the drain outlets.

[0093] In a further embodiment, the diameter of the mounting hole is larger than the outer diameter of the end of the sleeve portion 140 near the bottom 410 of the cylinder. The outer periphery of the mounting hole extends into the inner cylinder 400 along the axial direction of the water inlet shaft 300, forming a flange 411 surrounding the sleeve portion 140. There is a certain gap between the inner side of the flange 411 and the outer wall of the sleeve portion 140.

[0094] Since the inner cylinder 400 holds water independently, a relatively sealed space is formed inside the inner cylinder 400 during the water intake process. To ensure smooth water flow into the inner cylinder 400, a gap is needed on the inner cylinder 400 to connect with the outside. This gap allows air to escape from the inner cylinder 400 as water flows in, achieving pressure balance within the inner cylinder 400. In the above design, there is a gap between the mounting hole and the sleeve 140, connecting the interior and exterior spaces of the inner cylinder 400. This gap serves as an outlet for air to escape from the inner cylinder 400.

[0095] However, at the same time, it is also necessary to ensure that the water in the inner cylinder 400 does not overflow from the gap between the mounting hole and the sleeve part 140. To this end, a flange 411 extending to the right is provided on the outer periphery of the mounting hole. The water flow must pass over the flange 411 to flow out from this gap, which is quite difficult and to a certain extent avoids water leakage from the inner cylinder 400.

[0096] In a preferred embodiment, the flange 411 extends into the clearance space formed between the left end of the locking sleeve 200 and the sleeve portion 140. There is a certain distance between the surface of the locking portion 201 facing the bottom of the cylinder 410 and the extended end of the flange 411, as well as between the outer side of the flange 411 and the inner wall of the locking sleeve 200.

[0097] In the above scheme, for water to overflow from the gap between the mounting hole and the sleeve 140, it must first pass through the gap between the left end of the locking sleeve 200 and the bottom of the cylinder 410 into the clearance space. Within the clearance space, it flows first to the right, then past the flange 411, and finally to the left, before flowing out of the inner cylinder 400. The flow path (e.g.) Figure 2 (As indicated by the middle arrow) is more complex and more difficult to overflow, thus making it more effective in preventing leakage of the inner cylinder 400.

[0098] In this embodiment, the water inlet end cap 100 comprises a quick-connect structure consisting of a sleeve 140, a ball bearing 150, a locking sleeve 200, and an elastic element 210. Moving the locking sleeve 200 to the right allows the water inlet end cap 100 to be installed onto the end of the water inlet shaft 300. After releasing the locking sleeve 200, the quick-connect structure self-locks with the water inlet shaft 300, preventing the water inlet end cap 100 from being pulled off directly, ensuring a secure installation. To remove the water inlet end cap 100, moving the locking sleeve 200 to the right unlocks the quick-connect structure, and then pulling the water inlet end cap 100 to the right removes it. The installation and removal of the water inlet end cap 100 are simple and easy, facilitating the maintenance and replacement of parts for the water inlet assembly. Furthermore, the water inlet end cap 100 is securely installed and will not easily fall off, making the structure more reliable.

[0099] Meanwhile, a flange 411 extending inside the inner cylinder 400 is provided at the center of the bottom 410 of the inner cylinder 400. This flange cooperates with the structure of the water inlet cap 100 and the locking sleeve 200, forming a complex connecting path near the mounting hole in the bottom 410 to connect the inner and outer spaces of the inner cylinder 400. During water intake, air inside the cylinder can overflow through this connecting path, balancing the air pressure inside the cylinder. However, water overflow is difficult, thus preventing leakage of the inner cylinder 400 due to the existence of this connecting path.

[0100] Example 2

[0101] like Figures 1 to 8 As shown, this embodiment is a further limitation of the above embodiment one. The main water inlet 101 is located at the center of the bottom wall 111 of the water inlet end cover 100, and a protruding structure is provided on the outer surface of the bottom wall 111 around the main water inlet 101.

[0102] Since both the inlet cap 100 and the load to be washed are located inside the inner drum 400, during the water intake process, the load may cover the outer surface of the inlet cap 100, affecting the flow of water from the main inlet 101. When the load in the inner drum 400 is large, it may even cause the main inlet 101 to be blocked by the load, preventing the water from flowing out, resulting in an increase in water pressure in the water intake circuit, which may lead to leakage.

[0103] In this embodiment, by providing a raised structure around the main inlet 101, even if a load covers the inlet end cap 100, the raised structure can support a certain gap around the main inlet 101, preventing the load from completely adhering to the outer periphery of the main inlet 101. Because the load can be supported by the raised structure, a certain water outlet space is left around the main inlet 101, avoiding the problem of poor water intake caused by the load directly covering the main inlet 101.

[0104] In a further embodiment, the protruding structure is arranged around the outer periphery of the main inlet 101, supporting a certain gap in all directions around the main inlet 101, thereby more effectively preventing the load inside the cylinder from sticking to the bottom wall 111 where the main inlet 101 is located, and preventing the main inlet 101 from being blocked.

[0105] Preferably, the protrusion structure includes a plurality of protrusions 131. More preferably, the plurality of protrusions 131 are evenly distributed along the outer periphery of the main inlet 101.

[0106] In this embodiment, a plurality of first water inlets 102 are also provided on the bottom wall 111 around the main water inlet 101. Water flows out from the main water inlet 101 and the plurality of first water inlets 102 simultaneously, increasing the water outlet area, thereby achieving a faster water intake speed and shortening the water intake time. On the other hand, the simultaneous outflow of water from the main water inlet 101 and the plurality of first water inlets 102 also increases the coverage area of ​​the water flow within the inner drum 400, which is beneficial for wetting the load inside the drum more quickly, ensuring that the load is fully soaked during the washing process and improving the washing effect.

[0107] Both the first water inlet 102 and the protrusion 131 are arranged around the main water inlet 101, and preferably the two are arranged alternately along the outer periphery of the main water inlet 101.

[0108] In the above scheme, protrusions 131 are provided on both sides of each first water inlet 102, so that the protrusions 131 can also support a certain gap around the first water inlet 102. While ensuring that the main water inlet 101 is not covered by the load, the first water inlet 102 can also be prevented from being covered or blocked.

[0109] In this embodiment, both the main water inlet 101 and the first water inlet 102 are circular, and the diameter of the main water inlet 101 is larger than the diameter of the first water inlet 102. The incoming water mainly flows out from the main water inlet 101, and the first water inlet 102 is used to disperse the incoming water flow, thereby forming a certain spray water effect, and thus wetting the load more evenly.

[0110] In a further embodiment, the width of the protrusion 131 on the side closer to the main inlet 101 is greater than the width on the side farther from the main inlet 101, and a gap is formed between two adjacent protrusions 131, with the width gradually increasing in the direction away from the main inlet 101. The first inlet 102 is disposed in the gap.

[0111] In the above scheme, through the structural design of the protrusion 131, the outer periphery of the main water inlet 101 is basically completely surrounded by one side of the protrusion 131, providing good support for the area around the main water inlet 101. Adjacent protrusions 131 form a certain angle on the bottom wall 111, with the first water inlet 102 located within this angle. This provides more complete enclosure of the first water inlet 102, thus better preventing it from being covered by the load.

[0112] In detail, the protrusion 131 in this embodiment has an icicle-like structure, and its cross-sectional area parallel to the bottom wall 111 gradually decreases in the direction away from the bottom wall 111. A gap with gradually increasing width is formed between two adjacent protrusions 131 in the direction perpendicular to the bottom wall 111. After the load is supported by the protrusions 131, a gap is formed between two adjacent protrusions 131 that allows water to flow through, which better prevents the water from being blocked.

[0113] In a further embodiment, the water inlet end cap 100 is also provided with a plurality of second water inlets 103, which are distributed circumferentially along the main water inlet 101 and are located outside the area enclosed by the plurality of first water inlets 102.

[0114] In the above scheme, the second inlet 103 further increases the outlet area of ​​the inlet end cap 100, thereby achieving higher water intake efficiency and a larger water flow coverage area. The second inlet 103 is also circular, with a diameter smaller than that of the main inlet 101 and approximately the same as that of the first inlet 102. The main inlet 101, the first inlet 102, and the second inlet 103 work together to create a better spray water intake effect.

[0115] Preferably, the orientation of the first inlet 102 is parallel to that of the main inlet 101, and the orientation of the second inlet 103 is perpendicular to that of the main inlet 101.

[0116] Specifically, the main water inlet 101 and the first water inlet 102 are oriented parallel to the axial direction of the water inlet shaft 300, and the second water inlet 103 is oriented radially parallel to the water inlet shaft 300. The water inlet end cover 100 has a circular bottom wall 111, and the center of the bottom wall 111 coincides with the axis of the water inlet shaft 300. There is a transition surface 113 between the bottom wall 111 and the side wall 112 of the water inlet end cover 100, and the outlet end of the second water inlet 103 is located on the transition surface 113. When the load in the inner drum 400 is large, such as when the washing machine is fully loaded, even if the load covers the bottom wall 111 of the water inlet end cover 100, the second water inlet 103 can still discharge water normally without significantly affecting the water inlet process.

[0117] The orientation of the second inlet 103 is perpendicular to that of the main inlet 101 and the first inlet 102, so that the water outlet direction of the second inlet 103 is perpendicular to the water outlet direction of the main inlet 101 and the first inlet 102, which is conducive to forming a more diffuse water flow and further increasing the coverage area of ​​the water flow.

[0118] In a further embodiment, a rib 132 is provided on the side wall 112 of the water inlet cap 100, and the rib 132 extends circumferentially along the side wall 112. The second water inlet 103 is located between the outer periphery of the main water inlet 101 and the rib 132.

[0119] Preferably, the rib 132 extends circumferentially around the sidewall 112.

[0120] In this embodiment, the bottom wall 111 and side wall 112 of the water inlet cap 100 form a hollow cavity with one open side. The open side is installed facing the bottom 410 of the inner cylinder 400. By providing a rib 132 on the side wall 112, the water flow can be blocked from flowing along the surface of the side wall 112 towards the open side. The blocked water flow gathers at the rib 132 and is more likely to drip into the inner cylinder 400.

[0121] Furthermore, the sleeve portion 140 divides the hollow chamber inside the water inlet end cap 100 into a water inlet chamber 121 and an overflow chamber 122. The water inlet chamber 121 is connected to the water outlet end of the water inlet shaft 300, and the main water inlet 101, the first water inlet 102, and the second water inlet 103 are all connected to the water inlet chamber 121. The overflow chamber 122 is connected to the mounting hole at the bottom of the cylinder 410, thereby connecting to the space outside the inner cylinder 400. Several overflow holes 104 are also provided on the side wall 112, connecting the overflow chamber 122 to the external space. The second water inlet 103 and the overflow holes 104 are located on opposite sides of the raised rib 132.

[0122] In this embodiment, a sealing ring is provided on the side wall 112 of the water inlet end cap 100 at one end of the opening. The water inlet end cap 100 is installed on the water inlet shaft 300. The sealing ring is sealed and fitted to the inner surface of the cylinder bottom 410. At this time, the internal space of the inner cylinder 400 is connected to the air overflow chamber 122 through the air overflow hole 104 of the side wall 112, and then connected to the outside of the inner cylinder 400. This allows the air inside the cylinder to be discharged outward during the water intake process, which plays a role in balancing the air pressure and allows the water to flow smoothly into the inner cylinder 400.

[0123] By setting the rib 132 to separate the overflow hole 104 from the main water inlet 101, the first water inlet 102 and the second water inlet 103, the water flowing out of the water inlet end cover 100 can be blocked from flowing along the outer surface of the water inlet end cover 100 to the overflow hole 104, thus preventing water from entering the overflow hole 104 and causing the overflow path to be blocked.

[0124] In a further embodiment, at least two ribs 132 are spaced apart on the side wall 112, and an vent hole 104 is disposed between two adjacent ribs 132.

[0125] Preferably, at least three ribs 132 are provided at intervals on the side wall 112, and the vent 104 is provided between two adjacent ribs 132 on the open side near the hollow cavity.

[0126] In the above scheme, the vent 104 is positioned between two ribs 132, which helps prevent the vent 104 from being covered by the load, thus blocking the venting path. The vent 104 is positioned on the side closest to the opening, so the water flowing along the surface of the inlet end cap 100 needs to pass over two or more ribs 132 to reach the area where the vent 104 is located, thereby maximizing the protection that the water flow will not enter the vent 104.

[0127] In this embodiment, the vent hole 104 and the disassembly hole 105 are the same through hole structure provided on the side wall 112 of the water inlet end cover 100. The same structure realizes two different functions, which is beneficial to the simplification of the structure of the water inlet end cover 100.

[0128] In this embodiment, by providing protrusions 131 and ribs 132 on the outer surface of the water inlet cap 100, a raised structure is formed that can support a certain gap between the load and the surface of the water inlet cap 100. This prevents the load inside the cylinder from adhering to the outer periphery of the main water inlet 101, the first water inlet 102, and the second water inlet 103, which could lead to poor water intake or even blockage of the water flow. The relative positional relationship between the vent hole 104, the second water inlet 103, and the ribs 132 also prevents the water flow from flowing along the surface of the water inlet cap 100 into the vent hole 104, ensuring the effective function of the vent hole 104.

[0129] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A washing machine, comprising an inner drum and a water inlet assembly, characterized in that, An installation hole is provided at the center of the bottom of the inner cylinder, and the water inlet assembly includes: The water inlet shaft has a hollow water inlet channel and a recessed groove on its outer wall. The water outlet end of the water inlet shaft passes through the mounting hole and is installed inside the inner cylinder. The inlet end cap is connected to the outlet end cap of the inlet shaft and has a sleeve portion fitted onto the outlet end of the inlet shaft. The limiting member is mounted on the sleeve portion and can move relative to it radially, and can be engaged / disengaged from the slot. A locking mechanism for maintaining the limiting member in a limited position when it is engaged in a slot includes a locking sleeve fitted on the sleeve portion. The locking sleeve has a locking portion that abuts against the limiting member. The locking portion protrudes from the inner wall of the locking sleeve, and a clearance space is formed between the locking portion and the end of the locking sleeve near the bottom of the cylinder. The diameter of the mounting hole is larger than the outer diameter of the sleeve part near the bottom of the cylinder. The outer periphery of the mounting hole extends into the inner cylinder along the axial direction of the water inlet shaft, forming a flange that extends into the clearance space and surrounds the sleeve part. There is a certain distance between the inner side of the flange and the outer wall of the sleeve part, between the surface of the locking part facing the bottom of the cylinder and the extended end of the flange, and between the outer side of the flange and the inner wall of the locking sleeve.

2. The washing machine according to claim 1, characterized in that, The locking sleeve is axially movable along the water inlet shaft and is fitted onto the sleeve portion; The locking mechanism also includes an elastic element, one end of which abuts against the water inlet end cap, and the other end abuts against the locking sleeve, maintaining the relative position of the locking sleeve and the sleeve portion, so that the locking portion and the limiting element remain in abutting state.

3. The washing machine according to claim 2, characterized in that, The lock is at least partially made of a material that can be attracted by a magnet.

4. The washing machine according to claim 2, characterized in that, The locking sleeve extends a certain length along the axial direction, and the locking part is formed by a protrusion in the middle area of ​​the inner wall of the locking sleeve. The locking sleeve moves until the locking part and the limiting member intersect axially, and the limiting member moves radially outward along the sleeve part to disengage from the slot and at least partially enter the clearance space.

5. The washing machine according to claim 4, characterized in that, The socket includes a small-diameter section for installing a limiting member and a large-diameter section disposed at one end of the small-diameter section, wherein the clearance space and the large-diameter section are respectively located at both ends of the small-diameter section; The connection between the small diameter section and the large diameter section forms a limiting surface. The elastic element is a spring sleeved on the small diameter section. One end of the spring abuts against the limiting surface, and the other end abuts against the surface of the locking part facing the limiting surface.

6. The washing machine according to claim 5, characterized in that, A limiting mechanism protruding from its outer wall is provided on the narrow section, and the surface of the locking part facing away from the limiting surface abuts against the limiting mechanism.

7. The washing machine according to claim 6, characterized in that, The outer wall of the small diameter section is provided with a recessed retaining spring groove, and the limiting mechanism includes a retaining spring disposed in the retaining spring groove, the retaining spring protruding from the outer wall of the small diameter section.

8. The washing machine according to claim 2, characterized in that, The water inlet cap includes a bottom wall and a side wall surrounding the bottom wall. The sleeve and the locking sleeve fitted on the sleeve are located in the hollow cavity formed by the bottom wall and the side wall. The side wall has a disassembly hole that connects the hollow cavity to the external space.

9. The washing machine according to claim 8, characterized in that, The surface of the lock sleeve is provided with convex / concave disassembly parts.

10. The washing machine according to claim 9, characterized in that, The disassembly / assembly part is a recessed groove on the outer side wall of the lock sleeve.

11. The washing machine according to any one of claims 1-10, characterized in that, The sleeve portion is provided with at least one ball hole, and the limiting member is a ball installed in the ball hole.

12. The washing machine according to claim 11, characterized in that, The inner diameter of the ball bearing hole on the inner wall of the sleeve is smaller than the diameter of the ball bearing.

13. The washing machine according to any one of claims 1-10, characterized in that, A sealing element is provided between the inner wall of the sleeve and the outer wall of the water inlet shaft.

14. The washing machine according to claim 13, characterized in that, The sealing element is sleeved on the water inlet shaft and located between the slot and the water outlet end of the water inlet shaft.

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