A pusher and cartridge assembly

Abstract

This invention discloses a push-spring structure and a detergent dispenser assembly. The push-spring structure includes at least two coaxially arranged push rods, with the upper and lower push rods connected by an elastic element, and the last push rod connected to an elastic element. The invention also provides a detergent dispenser assembly, including a water tank and a detergent dispenser installed within the water tank. The detergent dispenser can be pulled out of and pushed into the water tank. The assembly also includes a push-spring structure, with the telescopic end of the first-stage push rod abutting against the detergent dispenser, and the elastic element of the last-stage push rod connected to the rear side wall of the water tank. By connecting the upper and lower push rods with an elastic element, and connecting the last push rod to an elastic element, multiple elastic elements provide damping, preventing the detergent dispenser from being ejected instantly and rapidly due to excessive force. This ensures the detergent dispenser is ejected at a certain speed, improving the user experience.

Description

Technical Field

[0001] This invention belongs to the field of household appliance technology, specifically, it relates to a push-spring structure and a detergent dispenser assembly. Background Technology

[0002] Current front-loading washing machines use a manual pull-out mechanism for the detergent dispenser to open and close. To facilitate this, a handle groove is typically designed for easy gripping. However, this handle groove affects the overall appearance of the washing machine and easily accumulates dust. Furthermore, the opening and closing of the detergent dispenser relies on a locking mechanism, requiring manual operation, which can lead to inconsistent feel and discomfort for users. A new push-to-open detergent dispenser has emerged, comprising a water tank mounted on the washing machine casing, within which a pull-out and push-in detergent dispenser is installed. A spring-loaded component connects the water tank and the detergent dispenser to provide the force for pushing the detergent dispenser out. By incorporating a spring-loaded component between the detergent dispenser and the water tank, a pushing force is applied to the detergent dispenser, driving it to move outward from the water tank. After the push-release lock on the dispenser is unlocked, the detergent dispenser is automatically ejected from the water tank by the pushing force applied by the spring-loaded component, thus achieving the purpose of automatically opening the detergent dispenser. The spring-loaded component includes a push rod sleeve, a push rod inserted into the sleeve and capable of sliding axially, one end of the push rod being connected to the sleeve via a compressed spring, and the other end extending and retracting through the corresponding opening of the sleeve. Because one end of the push rod is directly connected to the sleeve via a compressed spring, the detergent dispenser may be ejected instantly and rapidly due to excessive spring force, reducing the user experience. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a push-spring structure and detergent box assembly. By connecting the upper-level push rod and the lower-level push rod with elastic elements, and connecting the last-level push rod with elastic elements, multiple elastic elements provide a certain amount of damping, which can prevent the release of elastic force, so that the detergent box will not be popped out instantly and quickly due to excessive elastic force, so that the detergent box is popped out at a certain speed, thereby improving the user experience.

[0004] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by the present invention is as follows:

[0005] The present invention provides a pusher structure, including at least two stages of coaxially arranged push rods, wherein the upper stage push rod and the lower stage push rod are connected by an elastic element, and the last stage push rod is connected to an elastic element.

[0006] Furthermore, each stage of the push rod has a sleeve-like structure, and all push rods are nested sequentially from the inside out;

[0007] Preferably, one end of the sleeve-shaped push rod is an open end and the other end is a closed end, and the upper-level push rod is inserted into the lower-level push rod through the open end of the lower-level push rod.

[0008] Furthermore, the upper-level push rod and the lower-level push rod are connected by a compression spring. The compression spring is located inside the lower-level push rod and is connected to the closed end of the upper-level push rod and the closed end of the lower-level push rod, respectively.

[0009] Preferably, the compression spring is coaxially arranged with each stage of the push rod.

[0010] Furthermore, a sealed damping chamber is formed between the outer wall of the upper stage push rod and the inner wall of the lower stage push rod, and the damping chamber is filled with damping fluid.

[0011] Furthermore, the open end of the second-stage push rod is fitted with a first rod cap that closes the open end, and a through hole is provided in the middle of the first rod cap, through which the first-stage push rod is inserted into the second-stage push rod;

[0012] Preferably, the outer wall of the closed end of the first-stage push rod extends radially to form a ring of bosses. The outer periphery of the ring of bosses fits against the inner peripheral wall of the second-stage push rod. The bosses divide the damping chamber into two independent damping chambers. A through hole is provided on the bosses along the axial direction, and the two chambers are connected through the through hole.

[0013] Preferably, the first-stage push rod is a solid rod.

[0014] Furthermore, an oil sealing ring is fitted on the outer peripheral wall of the first-stage push rod, and the outer periphery of the oil sealing ring is in contact with and sealed to the inner peripheral wall of the second-stage push rod.

[0015] Preferably, a positioning groove is provided on the outer wall of the first-stage push rod, and the inner circumference of the oil sealing ring is embedded in the positioning groove.

[0016] Furthermore, both ends of the last stage push rod are open ends. One end of the last stage push rod is fitted with a second rod cap that seals the open end. The second rod cap serves as the closed end of the last stage push rod. The inner and outer sides of the bottom of the second rod cap are respectively provided with guide blocks that protrude axially. A compression spring is sleeved on the guide block.

[0017] Furthermore, each push rod has a radially protruding slider on its outer wall and a radially recessed groove on its inner wall. Both the slider and the groove extend axially, and the push rod of the next stage slides and connects with the push rod of the next stage through the slider sliding in the groove.

[0018] Furthermore, a push rod sleeve is nested outside the last stage push rod. One end of the push rod sleeve is open, and the other end is closed. The last stage push rod is inserted into the push rod sleeve through the open end of the push rod sleeve, and the elastic element on the last stage push rod is connected to the closed end of the push rod sleeve.

[0019] The present invention also provides a detergent box assembly, including a water box and a detergent box installed in the water box. The detergent box can be pulled out of the water box and pushed into the water box. It also includes a push-spring structure, wherein the telescopic end of the first-stage push rod abuts against the detergent box, and the elastic element of the last-stage push rod is connected to the rear side wall of the water box.

[0020] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art.

[0021] By connecting the upper and lower push rods with elastic elements, and connecting the last push rod with elastic elements, multiple elastic elements provide a certain amount of damping, which can prevent the release of elastic force, so that the detergent box will not be popped out instantly and quickly due to excessive elastic force. This allows the detergent box to pop out at a certain speed, thereby improving the user experience.

[0022] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0023] The accompanying drawings, as part of this invention, are provided to further illustrate the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention, but do not constitute an undue limitation thereof. Clearly, the drawings described below are merely some embodiments, and those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of a detergent dispenser assembly provided in one embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of the structure of a detergent dispenser assembly provided in another embodiment of the present invention;

[0026] Figure 3 This is a schematic diagram of the ejector structure provided in an embodiment of the present invention;

[0027] Figure 4 This is an exploded view of the projectile pushing structure provided in an embodiment of the present invention;

[0028] Figure 5 This is a cross-sectional view of the projectile pushing structure provided in an embodiment of the present invention.

[0029] In the diagram: 1-Push-spring structure; 2-Push rod; 21-Inner push rod; 211-Boss; 2111-Through hole; 22-Middle push rod; 221-First protrusion; 23-Outer push rod; 231-Second protrusion; 3-First compression spring; 4-Second compression spring; 5-Third compression spring; 6-Push rod sleeve; 7-Slider; 71-First slider; 72-Second slider; 8-Slide groove; 81-First slide groove; 82-Second slide groove; 9-Damping chamber; 10-Flow channel; 11-Oil sealing ring; 12-Positioning groove; 13-First rod cap; 131-First opening; 14-Second rod cap; 141-Second opening; 142-First guide block; 143-Second guide block; 15-Water box; 16-Detergent box.

[0030] 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

[0031] 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.

[0032] In the description of this invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "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 limiting this invention.

[0033] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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 mechanical connection or an electrical 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.

[0034] like Figure 5 As shown, the present invention provides a pusher structure, including at least two stages of coaxially arranged push rods 2, with the upper stage push rod and the lower stage push rod connected by an elastic element, and the last stage push rod is connected to an elastic element.

[0035] In the embodiments of the present invention, by connecting the upper-level push rod and the lower-level push rod through an elastic element, and connecting the last-level push rod to an elastic element, multiple elastic elements provide a certain damping, which can prevent the release of elastic force, so that the detergent box 16 will not be popped out instantly and quickly due to excessive elastic force, so that the detergent box 16 is popped out at a certain speed, thereby improving the user experience.

[0036] like Figure 1 and Figure 2 As shown, the push-spring structure 1 is used in a washing machine, which can be a drum washing machine or a top-loading washing machine. The detergent water tank assembly includes a water tank and a detergent box 16 installed inside the water tank. The detergent box 16 can be pulled out of the water tank and pushed into the water tank. The telescopic end of the first-stage push rod abuts against the detergent box 16, and the elastic element of the last-stage push rod is connected to the rear side wall of the water tank. When the push-spring structure 1 includes two push rods, an elastic element is provided between the two push rods, and an elastic element is provided between one push rod and the inner wall of the water tank. All push rods can telescopically move in the axial direction and in the same direction.

[0037] like Figure 3 and Figure 5 As shown, in the embodiments of the present invention, all push rods 2 are hollow push rods, and the push rods are sleeve structures; or one push rod 2 is a solid push rod, and the rest of the push rods 2 are hollow push rods, and the rest of the push rods are sleeve structures; all push rods 2 are nested sequentially from the inside out.

[0038] In embodiments of the present invention, all push rods 2 are hollow push rods, and all push rods 2 are nested sequentially from the inside out, with the innermost push rod being a hollow push rod; or, one of all push rods 2 is a solid push rod, and the rest are hollow push rods, and all push rods 2 are nested sequentially from the inside out, with the innermost push rod being a solid push rod, which is the first-stage push rod;

[0039] Specifically, one end of the hollow push rod is open, and the other end is closed. In the two nested push rods, the upper-level push rod is inserted into the lower-level push rod through the open end of the lower-level push rod, and the remaining part of the upper-level push rod is exposed outside the lower-level push rod, which is used to abut against the outside of the detergent box 16. When each push rod is compressed, the detergent box 16 gradually abuts against the telescopic ends of multiple push rods, which improves the stability of the detergent box 16 being pushed into the water box. When each push rod is extended, the telescopic ends of multiple push rods gradually extend one after another, slowly releasing the elastic force and reducing the speed at which the detergent box 16 pops out.

[0040] like Figure 3 and Figure 5 As shown, in an embodiment of the present invention, a push rod sleeve 6 is nested outside the last stage push rod, and an elastic element is provided between the last stage push rod and the push rod sleeve 6.

[0041] In this embodiment of the invention, in order to achieve the stability of the extension and retraction of several push rods and the stability of the push rods within the water box, a push rod sleeve 6 is nested outside the last stage push rod. One end of the push rod sleeve 6 is an open end, and the other end is a closed end. At least a portion of the last stage push rod is inserted into the push rod sleeve 6 through the open end of the push rod sleeve 6. The water box is square, and the push rod sleeve 6 is fixed to the inner wall of the water box. Specifically, the outer periphery of the push rod sleeve 6 is provided with a first protrusion and a second protrusion parallel to the bottom wall of the water box. The first protrusion and the second protrusion are arranged opposite to each other on both sides of the push rod sleeve 6. The first protrusion and the second protrusion are provided with mounting holes for connecting to the bottom wall of the water box.

[0042] Both ends of the push rod sleeve 6 are open ends, and one end of the push rod is in contact with the rear side wall of the water box, while the rear side wall of the water box serves as the closed end of the push rod sleeve 6.

[0043] like Figure 4 and Figure 5 As shown, specifically, the pusher structure 1 includes an inner pusher 21, a middle pusher 22, and an outer pusher 23. The inner pusher 21 is a solid rod and is the first-stage pusher. The middle pusher 22 and the outer pusher 23 are hollow inside, and each has an open end and a closed end. The middle pusher 22 is the second-stage pusher, and the outer pusher 23 is the last-stage pusher. The inner pusher 21 is inserted into the middle pusher 22 through the open end portion of the middle pusher 22, and the middle pusher 22 is inserted into the outer pusher 23 through the open end portion of the outer pusher 23. The outer pusher 23 is inserted into the pusher sleeve 6 through the open end portion of the pusher sleeve 6.

[0044] like Figure 5 As shown in the embodiment of the present invention, the upper-level push rod and the lower-level push rod are connected by a compression spring. The compression spring is located inside the lower-level push rod and is connected to the closed end of the upper-level push rod and the closed end of the lower-level push rod, respectively.

[0045] In an embodiment of the present invention, a compression spring is disposed inside the next-stage push rod, one end of the compression spring is connected to the inner wall of the closed end of the next-stage push rod, and the other end of the compression spring is connected to the outer wall of the closed end of the previous-stage push rod.

[0046] Furthermore, a compression spring is provided between the last stage push rod and the push rod sleeve 6. The compression spring is located inside the push rod sleeve 6 and is connected to both the closed end of the last stage push rod and the closed end of the push rod sleeve 6. One end of the compression spring is connected to the inner wall of the closed end of the push rod sleeve 6, and the other end is connected to the outer wall of the closed end of the last stage push rod. It should be noted that if the push rod sleeve 6 is closed at one end and open at the other end, the compression spring is connected to the push rod sleeve 6. If the rear wall of the water box is the closed end of the push rod sleeve 6, the compression spring is connected to the rear wall of the water box.

[0047] Specifically, one end of the inner push rod 21 is connected to the inner side of the closed end of the middle push rod 22 via the first compression spring 3; the outer side of the closed end of the middle push rod 22 is connected to the inner side of the closed end of the outer push rod 23 via the second compression spring 4; and the outer side of the closed end of the outer push rod 23 is connected to the inner side of the closed end of the push rod sleeve 6 via the third compression spring 5.

[0048] During compression, the telescopic end of the inner push rod 21 abuts against the detergent box 16, pushing the detergent box 16 and moving the inner push rod 21 backward, compressing the first compression spring 3. Subsequently, the telescopic end of the middle push rod 22 abuts against the detergent box 16, and the middle push rod 22 moves backward along with the inner push rod 21, compressing the second compression spring 4. Subsequently, the telescopic end of the outer push rod 23 abuts against the detergent box 16, and the outer push rod 23 moves backward along with the middle and inner push rods 21, compressing the third compression spring 5. The multiple compression springs compress in sequence, buffering the speed at which the detergent box 16 is pushed in and improving the stability of pushing the detergent box 16 in.

[0049] When released, the first compression spring 5, the second compression spring 4, and the third compression spring 5 are gradually released. The multiple compression springs provide a certain amount of damping, which can hinder the release of the elastic force of the push-out structure 1, so that the detergent box 16 will not be popped out instantly and quickly due to excessive elastic force, and the detergent box 16 will be popped out at a certain speed, thus improving the user experience.

[0050] Specifically, the first compression spring 3, the second compression spring 4, and the third compression spring 5 extend axially and are coaxially arranged.

[0051] like Figure 4 As shown in the embodiment of the present invention, each push rod has a radially protruding slider 7 on its outer wall and a radially recessed groove 8 on its inner wall. Both the slider 7 and the groove 8 extend axially, and the push rod of the next stage is slidably connected to the push rod of the next stage by sliding the slider 7 in the groove 8.

[0052] In embodiments of the present invention, two nested push rods are slidably connected, making the push rods move more smoothly when they extend or retract.

[0053] The inner wall of the push rod sleeve 6 is provided with a groove that extends axially and is radially recessed. The last stage push rod is connected to the push rod sleeve 6 by sliding the slider 7 in the groove 8.

[0054] For example, the outer wall of the middle push rod 22 is provided with a first slider 71 that extends axially and protrudes radially, and the inner wall of the outer push rod 23 is provided with a first groove 81 that extends axially and is recessed radially. The first slider 71 slides in the first groove 81. The outer wall of the outer push rod 23 is provided with a second slider 72 that extends axially and protrudes radially, and the inner wall of the push rod sleeve 6 is provided with a second groove 82 that extends axially and is recessed radially. The second slider 72 slides in the first groove 81. The first groove 81 guides the sliding of the first slider 71, and the second groove 82 guides the sliding of the second slider 72. The first slider 71 extends from one end of the middle push rod 22 to the other end, and the second slider 72 extends from one end of the outer push rod 23 to the other end.

[0055] like Figure 4 and Figure 5 As shown, in an embodiment of the present invention, the outer wall of the closed end of the first-stage push rod extends radially to form a ring of bosses 211. The outer periphery of the ring of bosses 211 fits against the inner peripheral wall of the second-stage push rod and slides axially on the inner peripheral wall of the second-stage push rod.

[0056] In an embodiment of the present invention, the boss 211 slides on the inner peripheral wall of the second-stage push rod, and the outer periphery of the boss 211 is in contact with the inner peripheral wall of the second-stage push rod, so that the first-stage push rod slides relatively smoothly in the second-stage push rod. For example, a ring of bosses 211 is formed on the inner push rod 21, and the outer periphery of the ring of bosses 211 is in contact with the inner peripheral wall of the middle push rod 22.

[0057] like Figure 5 As shown, the boss divides the damping chamber into two independent damping cavities. Specifically, a damping cavity 9 filled with damping fluid is formed between the inner peripheral wall of the second-stage push rod and the boss 211. The boss 211 has a through hole 2111. The outer peripheral wall of the first-stage push rod, the inner peripheral wall of the second-stage push rod, and the boss 211 form another damping cavity filled with damping fluid. This damping cavity serves as a flow channel 10. One end of the flow channel 10 is sealed, and the other end is connected to the damping cavity 9 through the through hole 2111. For example, the boss 211 divides the middle push rod... The interior of 22 is divided into two damping cavities. One damping cavity is formed by the inner peripheral wall of the middle push rod 22 and the boss 211. This damping cavity is called damping cavity 9 and is filled with damping fluid. The other damping cavity is formed by the outer peripheral wall of the inner push rod 21, the inner peripheral wall of the middle push rod 22 and the boss 211. This damping cavity is called flow channel 10. Since the boss 211 is provided with a through hole 2111, the damping fluid can flow between the damping cavity 9 and the flow channel 10, thereby hindering the compression and extension of the push rod and further hindering the release of the elastic force of the push spring structure 1.

[0058] like Figure 4 and Figure 5As shown, in an embodiment of the present invention, an oil sealing ring 11 is fitted on the outer peripheral wall of the first-stage push rod, and the outer periphery of the oil sealing ring 11 is in contact with and sealed to the inner peripheral wall of the second-stage push rod.

[0059] In an embodiment of the present invention, in order to increase the sealing performance of the damping cavity 9 and the flow channel 10, an oil sealing ring 11 is provided at the end of the flow channel 10 away from the damping cavity 9. The oil sealing ring 11 is sleeved on the outer peripheral wall of the first-stage push rod and is tightly fitted with the inner peripheral wall of the second-stage push rod to achieve a seal. For example, an oil sealing ring 11 is sleeved on the outer peripheral wall of the inner push rod 21, and the outer periphery of the oil sealing ring 11 is fitted and sealed with the inner peripheral wall of the middle push rod 22.

[0060] Specifically, a positioning groove 12 is provided on the outer peripheral wall of the second-stage push rod, and the inner peripheral of the oil sealing ring 11 is embedded in the positioning groove 12. The positioning groove 12 is used to position the oil sealing ring 11 to prevent the oil sealing ring 11 from being misaligned when the push rod moves, which would result in poor sealing effect.

[0061] like Figure 4 and Figure 5 As shown, in an embodiment of the present invention, the open end of the second-stage push rod is fitted with a first rod cap 13 that covers the open end. The first rod cap 13 has a through hole in the middle that allows the first-stage push rod to pass through. The first-stage push rod is inserted into the second-stage push rod through the through hole.

[0062] In embodiments of the present invention, the inner push rod 21 is a cylindrical rod, and the middle push rod 22, the outer push rod 23, and the push rod sleeve 6 are cylindrical. For example, the first-stage push rod is the inner push rod 21, the second-stage push rod is the middle push rod 22, and the first rod cap 13 is provided at the telescopic end of the middle push rod 22. Specifically, the telescopic end of the middle push rod 22 includes a first part and a second part. The radial dimension of the second part is smaller than that of the first part. The first rod cap 13 is grooved, with the groove of the first rod cap 13 facing the second part and fastened to the second part, abutting against the front end of the first part. The first rod cap 13 guides the telescopic movement of the inner push rod 21.

[0063] The second part has several first protrusions 221 along the circumferential direction on the outer peripheral wall. The radial dimension of the first protrusions 221 gradually increases from front to back. The bottom and wall of the first rod cap 13 are provided with first openings 131. The inner push rod 21 is inserted into the middle push rod 22 through the first opening 131 at the bottom of the groove, and the first protrusions 221 are inserted into the first opening 131 at the wall of the groove.

[0064] In an embodiment of the present invention, both ends of the last stage push rod are open ends, and a second rod cap 14 covering the open end is fastened to one end of the last stage push rod. The second rod cap 14 forms the closed end of the last stage push rod. Guide blocks protruding axially are respectively provided in the middle part inside and outside the second rod cap 14, and compression springs are sleeved on the guide blocks.

[0065] In an embodiment of the present invention, the last stage push rod is an outer push rod 23. The outer peripheral wall of the closed end of the outer push rod 23 is provided with several second protrusions 231 along the circumferential direction. The radial dimension of the second protrusions 231 gradually increases from back to front. The closed end of the outer push rod 23 is fitted with a groove-shaped second rod cap 14. The groove of the second rod cap 14 faces the outer push rod 23 and is fastened to the outer wall of the outer push rod 23. The groove wall of the second rod cap 14 is provided with a second opening 141, and the second protrusions 231 are inserted into the second opening 141 of the groove wall. The inner and outer sides of the bottom of the groove of the second rod cap 14 are respectively provided with axially protruding guide blocks, namely a first guide block 142 and a second guide block 143. The guide blocks are used to compress springs sleeved on them. Specifically, the second compression spring 4 is sleeved on the first guide block 142, and the third compression spring 5 is sleeved on the second guide block 143, so as to guide the extension and retraction of the second compression spring 4 and the third compression spring 5 and avoid misalignment during the extension and retraction of the compression springs.

[0066] 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 detergent box assembly comprising a water box and a detergent box mounted in the water box, the detergent box being pullable out of the water box and pushable into the water box; characterized in that, It also includes a push-spring structure, comprising at least two coaxially arranged push rods, with the upper and lower push rods connected by an elastic element, and the last push rod also having an elastic element connected to it; the telescopic end of the first-stage push rod abuts against the detergent box, and the elastic element of the last-stage push rod is connected to the rear side wall of the water box; each push rod is a sleeve-shaped structure, and all push rods are nested sequentially from the inside out; a sealed damping chamber is formed between the outer wall of the upper-stage push rod and the inner wall of the lower-stage push rod, and the damping chamber is filled with damping fluid; the outer wall of the closed end of the first-stage push rod extends radially to form a ring of bosses, and the outer periphery of the ring of bosses fits against the inner peripheral wall of the second-stage push rod, the bosses dividing the damping chamber into two independent damping cavities, and through holes are provided on the bosses along the axial direction, the two cavities being connected through the through holes.

2. The detergent pod assembly of claim 1, wherein, The sleeve-shaped push rod has an open end and a closed end. The upper-level push rod is inserted into the lower-level push rod through the open end of the lower-level push rod.

3. The detergent pod assembly of claim 2, wherein, The upper-level push rod and the lower-level push rod are connected by a compression spring. The compression spring is located inside the lower-level push rod and is connected to the closed end of both the upper-level push rod and the lower-level push rod.

4. The detergent pod assembly of claim 3, wherein, The compression spring is coaxially arranged with each stage of the push rod.

5. The detergent pack assembly according to any one of claims 1 to 4, wherein The open end of the second-stage push rod is fitted with a first rod cap that closes the open end. The first rod cap has a through hole in the middle, through which the first-stage push rod is inserted into the second-stage push rod.

6. The detergent pod assembly of claim 5, wherein, The first-stage putter is a solid putter.

7. The detergent pod assembly of claim 5, wherein, An oil sealing ring is fitted on the outer peripheral wall of the first-stage push rod, and the outer periphery of the oil sealing ring is in contact with and sealed to the inner peripheral wall of the second-stage push rod.

8. The detergent pod assembly of claim 7, wherein, A positioning groove is provided on the outer wall of the first-stage push rod, and the inner circumference of the oil sealing ring is embedded in the positioning groove.

9. The detergent pod assembly of any one of claims 1-4, wherein, Both ends of the last stage push rod are open. One end of the last stage push rod is fitted with a second rod cap that seals the open end. The second rod cap serves as the closed end of the last stage push rod. The inner and outer sides of the bottom of the second rod cap are respectively provided with guide blocks that protrude axially. A compression spring is sleeved on the guide block.

10. The detergent pack assembly according to any one of claims 1-4, wherein, Each push rod has a radially protruding slider on its outer wall and a radially recessed groove on its inner wall. Both the slider and the groove extend axially. The push rod of the previous stage slides in the groove through the slider and is slidably connected to the push rod of the next stage.

11. The detergent pod assembly of any one of claims 1-4, wherein, The final stage push rod is nested inside a push rod sleeve. One end of the push rod sleeve is open, and the other end is closed. The final stage push rod is inserted into the push rod sleeve through the open end of the push rod sleeve, and the elastic element on the final stage push rod is connected to the closed end of the push rod sleeve.

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