A cartridge, pump assembly, and method of assembling a cartridge

Abstract

The application provides a cartridge, a pump assembly and a cartridge assembling method. The cartridge comprises: a pump assembly, the pump assembly comprising a cartridge pump and a pump plunger arranged in the cartridge pump, and a side wall end of the cartridge pump is provided with an undercut structure; and a cartridge body, a side wall of the cartridge body is provided with a through hole, the through hole is matched with the undercut structure of the cartridge pump, so that the undercut structure of the pump assembly is clamped on the side wall of the cartridge body. The cartridge in the application is a detachable structure, and molds corresponding to the pump assembly and the cartridge body are easy to form, so that the cartridge is easy to produce.

Description

Technical Field

[0001] This application relates to the field of gene sequencing device technology, and in particular to a cartridge, a pump assembly, and a cartridge assembly method. Background Technology

[0002] Reagents can be pipetted into cartridges within gene sequencing library preparation instruments or nucleic acid extraction instruments. However, existing cartridges often integrate the cartridge pump with the cartridge body, making cartridge molding difficult and cartridge production challenging.

[0003] Therefore, there is an urgent need to provide a card box that is easy to form on a mold, making the card box easy to produce. Summary of the Invention

[0004] In view of this, the present application provides a card box whose corresponding mold is easy to form, making the card box easy to produce.

[0005] To address the above problems, this application provides the following technical solutions:

[0006] This application provides a card holder, including:

[0007] A pump assembly, comprising a cartridge pump and a pump plunger for insertion into the cartridge pump, wherein the side wall end of the cartridge pump is provided with an undercut structure;

[0008] The card holder body has a through hole on its side wall, which is used to match the inverted structure of the card holder pump so that the inverted structure of the pump assembly is engaged with the side wall of the card holder body.

[0009] Optionally, the pump plunger includes a plunger lug for advancing the pump plunger into the cartridge pump;

[0010] The cartridge pump has a first slot and a second slot on its side wall that match the plunger lug. The first slot and the second slot extend along the extension direction of the cartridge pump. A communication port is provided between the first slot and the second slot. The first slot extends to and through the undercut structure of the cartridge pump. The second slot extends to the communication port so that the plunger lug is inserted into the cartridge pump along the first slot and twisted into the second slot through the communication port.

[0011] Optionally, when the pump plunger and the cartridge pump are in the inserted state, the plunger lugs protrude from the first slot and the second slot;

[0012] The side wall of the card holder body is also provided with a first through hole that matches the plunger lug, and the first through hole is connected to the through hole.

[0013] Optionally, the cartridge body includes a support member and a damping member for supporting the pump assembly; wherein, the support member is used to support one end of the pump assembly away from the inverted structure; the damping member is disposed between the support member and the through hole, and is used to provide damping to the plunger lug towards the through hole.

[0014] Optionally, the cartridge body further includes a fixture located between the through hole and the damping member. The fixture is detachable and is used to fix the damping member between the support member and the through hole before the pump assembly is assembled to the cartridge body, and to remove it after the pump assembly is assembled to the cartridge body.

[0015] Optionally, the inverted structure includes a pressing limiting ring fixedly connected to the side wall of the cartridge pump, and a limiting groove located on the side wall of the cartridge pump, wherein the pressing limiting ring is adjacent to the limiting groove, and the inner diameter of the limiting groove matches the inner diameter of the through hole.

[0016] Optionally, the outer diameter of the pressing limiting ring is larger than the outer diameter of the plunger ear, and the pressing limiting ring is provided with a second through hole, the second through hole is connected to the first slot, and the outer diameter of the second through hole is larger than the outer diameter of the plunger ear.

[0017] This application also provides a pump assembly, including:

[0018] A cartridge pump and a pump plunger for insertion into the cartridge pump, wherein the side wall end of the cartridge pump is provided with an undercut structure; the undercut structure matches the through hole of the side wall of the cartridge body and is used to lock the pump assembly into the through hole of the side wall of the cartridge body.

[0019] Optionally, the pump plunger includes a plunger lug for advancing the pump plunger into the cartridge pump;

[0020] The cartridge pump has a first slot and a second slot on its side wall that match the plunger lug. The first slot and the second slot extend along the extension direction of the cartridge pump. A communication port is provided between the first slot and the second slot. The first slot extends to and through the undercut structure of the cartridge pump. The second slot extends to the communication port so that the plunger lug is inserted into the cartridge pump along the first slot and twisted into the second slot through the communication port.

[0021] Optionally, when the pump plunger and the cartridge pump are in the inserted state, the plunger lugs protrude from the first slot and the second slot.

[0022] Optionally, the inverted structure includes a pressing limiting ring fixedly connected to the side wall of the cartridge pump, and a limiting groove located on the side wall of the cartridge pump, wherein the pressing limiting ring is adjacent to the limiting groove, and the inner diameter of the limiting groove matches the inner diameter of the through hole.

[0023] Optionally, the outer diameter of the pressing limiting ring is larger than the outer diameter of the plunger ear, and the pressing limiting ring is provided with a second through hole, the second through hole is connected to the first slot, and the outer diameter of the second through hole is larger than the outer diameter of the plunger ear.

[0024] This application also provides a card box assembly method, including:

[0025] A pump plunger is inserted into the inside of a cartridge pump to form a pump assembly, wherein the side wall end of the cartridge pump is provided with an inverted structure;

[0026] The pump assembly is assembled into the through hole on the side wall of the cartridge body, wherein the snap-fit ​​structure of the pump assembly engages with the through hole.

[0027] Optionally, the pump plunger includes at least a plunger lug, and the side wall of the cartridge pump has a first slot and a second slot that match the plunger lug. A communication port is provided between the first slot and the second slot. The step of inserting the pump plunger into the cartridge pump to form a pump assembly includes:

[0028] Insert the plunger lug of the pump plunger along the first slot of the cartridge pump;

[0029] In the communication port, the plunger lug of the pump plunger is twisted into the second slot.

[0030] Optionally, the cartridge body includes a support member and a damping member for supporting the pump assembly, and a fixture located between the through hole and the damping member, wherein the fixture abuts against the damping member, and the through hole for assembling the pump assembly to the side wall of the cartridge body includes:

[0031] The pump assembly is inserted into the cartridge body, wherein the plunger lug is inserted into the cartridge body along the through hole, and the pump assembly passes through the damping member and connects to the support member;

[0032] Remove the fixture that opposes the damping element, so that the damping element provides damping in the pump assembly in the direction of pushing towards the side wall of the cartridge body.

[0033] Optionally, the plunger lug protrudes from the first and second slots, and after inserting the pump assembly into the cartridge body and before removing the fixture that abuts the damping element, the method further includes:

[0034] Rotate the pump assembly to separate the second slot of the pump assembly from the through hole.

[0035] The card holder, pump assembly, and card holder assembly method provided in this application embodiment include a card holder comprising a pump assembly and a card holder body. The pump assembly includes a card holder pump and a pump plunger for insertion within the pump. The pump's side wall has an undercut structure. The card holder body has a through hole on its side wall, which matches the undercut structure of the pump, allowing the undercut structure of the pump assembly to engage with the side wall of the card holder. Since the card holder provided in this application embodiment is a detachable structure formed by assembling the pump assembly and the card holder body, the pump assembly and the card holder body can be manufactured separately and then assembled into a card holder. As can be seen from the above, the molds for the individual pump assembly or the individual card holder body are simple to form, making the card holder easy to manufacture. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0037] Figure 1 This is a cross-sectional view of the left side of the card holder body, which is fixed to the card holder body based on the inverted structure in the embodiment of this application;

[0038] Figure 2 This is a right-side sectional view of the card holder body fixed by an inverted structure in an embodiment of this application;

[0039] Figure 3 This is a flowchart illustrating the assembly method of the card box in an embodiment of this application;

[0040] Figure 4 This is a schematic diagram of the pump assembly in an embodiment of this application;

[0041] Figure 5 This is a flowchart illustrating the assembly method of the pump assembly in an embodiment of this application;

[0042] Figure 6 This is a schematic diagram illustrating the steps of assembling the pump assembly in an embodiment of this application;

[0043] Figure 7 This is a schematic diagram of the card holder body in an embodiment of this application;

[0044] Figure 8 This is a flowchart illustrating the assembly method of the pump assembly and the cartridge body in an embodiment of this application.

[0045] Figure 9This is a flowchart illustrating another assembly method of the pump assembly and the cartridge body in this application embodiment;

[0046] Figure 10 This is a schematic diagram illustrating the steps of assembling the card box in an embodiment of this application. Detailed Implementation

[0047] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0048] As can be seen from the background technology, existing card boxes and card box pumps are often integrated with the card box body, which makes it difficult to form card box molds and makes card boxes difficult to produce.

[0049] Based on the above, this application provides a new solution by disassembling the structure of the card box into components such as the pump assembly and the card box body, and producing the scattered components separately. Therefore, the molds corresponding to the scattered components are simple to form, making the card box easy to produce.

[0050] Specifically, in combination Figure 1 and Figure 2 The card holder described in this application is shown. Figure 1 and Figure 2 Cross-sectional views of the card holder body based on the inverted structure in the embodiments of this application are shown from different angles.

[0051] Combination Figure 1 and Figure 2 Pump assembly 11 includes a cartridge pump 110 and a pump plunger 120 for insertion into the cartridge pump 110. The side wall of the cartridge pump 110 is provided with an undercut structure 112.

[0052] Card holder body 20, the side wall of the card holder body 20 is provided with a through hole, the through hole is used to match the inverted structure 112 of the card holder pump 110 so that the inverted structure 112 of the pump assembly is locked in the side wall of the card holder body 20.

[0053] The inverted locking structure is used to engage the pump assembly with the cartridge body. In one embodiment, the inverted locking structure can be a separate pressing and limiting ring, which engages the pump assembly against the side wall of the cartridge body 20. In another embodiment, the inverted locking structure can be a separate limiting groove located on the side wall of the cartridge pump, which engages the pump assembly against the side wall of the cartridge body 20. In a further embodiment, it can be a combination of a pressing and limiting ring and a limiting groove. Specifically, a pressing and limiting ring fixedly connected to the side wall of the cartridge pump and a limiting groove located on the side wall of the cartridge pump are adjacent to each other, and the combination of the pressing and limiting ring and the limiting groove engages the pump assembly against the side wall of the cartridge body. The above are only examples of optional implementations of the inverted locking structure, and will not be elaborated further here.

[0054] Based on the above, it can be seen that the pump assembly and the cartridge body are detachable structures. Specifically, the cartridge pump in the pump assembly can be molded separately. Compared to the cartridge pump and cartridge body being molded as a single unit, it is easier to produce each component using simpler molds. After production, multiple components are assembled together to form a detachable cartridge structure. The molds for the multiple components are simple to form, making cartridge production easier.

[0055] Figure 3 This is a flowchart of the card box assembly method in an embodiment of this application. (In conjunction with...) Figure 3 As shown, the assembly method of the card box specifically includes:

[0056] Step S31: Insert the pump plunger into the inside of the cartridge pump to form a pump assembly, wherein the side wall end of the cartridge pump is provided with an undercut structure;

[0057] Step S32: Assemble the pump assembly into the through hole on the side wall of the cartridge body, wherein the inverted structure of the pump assembly engages with the through hole.

[0058] In this embodiment, a pump plunger is inserted inside the cartridge pump to form a pump assembly, which is then assembled into a through hole on the side wall of the cartridge body to form a cartridge. This embodiment, by combining the pump assembly into the cartridge body, forms a detachable cartridge structure. Furthermore, the cartridge molds for the multiple components are simple to form, facilitating cartridge production.

[0059] In an optional example, Figure 4 This is a schematic diagram of the pump assembly in an embodiment of this application. Specifically, refer to... Figure 4 As shown, the pump assembly includes a cartridge pump 110 and a pump plunger 120 for insertion into the cartridge pump. The cartridge pump 110 has a snap-fit ​​structure 112 at the end of its side wall. The snap-fit ​​structure 112 matches the through hole of the side wall of the cartridge body and is used to snap the pump assembly into the through hole of the side wall of the cartridge body.

[0060] This embodiment of the application allows the cartridge pump to be snapped into the side wall of the cartridge body. The installation steps are simple, allowing users to quickly understand the assembly process of the pump assembly, and the assembled cartridge is quite secure. It should also be noted that since the pump assembly and cartridge body are assembled together to form the cartridge, the cartridge is actually a detachable structure. The disassembly process is also relatively simple, and the disassembled parts can be stored separately, helping to save space. Furthermore, if either the pump assembly or the cartridge body is damaged, only the damaged part can be replaced, and a new cartridge can be assembled according to the aforementioned method. This approach effectively reduces the cost of using the cartridge.

[0061] In a more specific embodiment, referring to reference 1, Figure 2 and Figure 4 As shown, the cartridge pump 110 has multiple slots on its side wall. At least two slots are included, namely a first slot 111a and a second slot 111b. The first and second slots extend along the extension direction of the cartridge pump. A communication port is provided between the first and second slots. The first slot extends to and through the undercut structure 112 of the cartridge pump, and the second slot extends to the communication port 113.

[0062] The first slot can be one or two. The number of the first slots matches the number of plunger ears. In this example, we will take two plunger ears as an example. Correspondingly, the number of the first slot and the second slot are also two.

[0063] Pump plunger 120 includes plunger lugs 122 for advancing the pump plunger into the cartridge pump. (Continue to reference) Figure 4 The first slot 111a on the cartridge pump 110 is used for the plunger lug of the pump plunger to be inserted along the first slot 111a, and the second slot 111b is used to limit the plunger lug of the pump plunger to its position. The first slot and the second slot are located in different positions, and a communication port 113 is provided between the first slot and the second slot. The first slot 111a extends to and through the undercut structure 112 of the cartridge pump, and the second slot 111b extends to the communication port 113.

[0064] The pump plunger 120 includes a pump plunger body 121 and a plunger lug 122, the plunger lug 122 being used to push the pump plunger 120 into the cartridge pump 110.

[0065] Optionally, a silicone layer is provided on the side of the pump plunger 120 away from the plunger lug, the silicone layer being used to achieve a seal with the pump plunger and the internal space of the cartridge pump.

[0066] In some alternative embodiments, the pump plunger body 121 may be made of hard plastic.

[0067] Based on the above, Figure 5 and Figure 6 A schematic diagram of the pump assembly assembly is shown. (The diagram shows the assembly of the pump assembly.) Figure 5 This is a flowchart illustrating the assembly method of the pump assembly in an embodiment of this application; Figure 6 This is a schematic diagram of the assembly steps of the pump assembly in an embodiment of this application.

[0068] refer to Figure 5 The specific assembly method of the pump assembly includes:

[0069] Step S51: Insert the plunger lug of the pump plunger along the first slot of the cartridge pump.

[0070] Step S52: In the connecting port, twist the plunger lug of the pump plunger to the second slot.

[0071] A more detailed diagram, combined with Figure 6 As shown, the plunger ear 122 is inserted into the first slot 111a of the cartridge pump 110. During the insertion process, when the plunger ear 122 is located in the communication port 113 connecting the first slot 111a and the second slot 111b, the plunger ear 122 is twisted to align with the second slot 111b, and the insertion continues along the extension direction indicated by the second slot 111b, so that the pump plunger and the cartridge pump 110 are in the installed state.

[0072] It should be noted that, in an optional example, when the pump plunger and cartridge pump are in the inserted state, the plunger lug 122 may protrude from the first slot 111a and the second slot 111b (e.g., Figure 6 (As shown). At this time, the outer diameter of the plunger lug is larger than the outer diameter of the side wall of the cartridge pump. Specifically, when the pump plunger is assembled into the cartridge pump, the plunger lug protrudes from the first slot when it is in the first slot; when the plunger lug of the pump plunger is twisted, the plunger lug protrudes from the second slot when it is in the second slot.

[0073] In other alternative embodiments, the plunger lug 122 may not protrude from the first slot 111a and the second slot 111b. Specifically, it is sufficient to insert the pump plunger into the cartridge pump, which will not be described in detail here.

[0074] In other alternative embodiments, after forming the pump assembly, the method further includes fixing the pump assembly to the cartridge body to assemble it into a cartridge.

[0075] Figure 7This is a schematic diagram of the card holder body in an embodiment of this application. The side wall of the card holder body 20 is provided with a through hole 200. The card holder body includes a support member 220 and a damping member 230 for supporting the pump assembly. The support member 220 is used to support the end of the pump assembly away from the inverted structure. The damping member 230 is disposed between the support member and the through hole and is used to provide damping to the plunger lug facing the through hole.

[0076] In some embodiments, the cartridge body 20 may further include a fixture 210 located between the through hole 200 and the damper 220. The fixture is detachable and is used to fix the damper between the support and the through hole before the pump assembly is assembled to the cartridge body, and to be removed after the pump assembly is assembled to the cartridge body.

[0077] Based on the above description, combined with Figure 7 The present application discloses a card holder body 20, which may specifically include a jig 210 supporting the pump assembly, a support member 220 and a damping member 230.

[0078] Before the pump assembly is assembled to the cartridge body, the jig 210 is used to hold the end of the damper 220 facing the through hole 200, and the support 230 fixes the other end of the damper so that it cannot move. That is, the end of the damper 220 facing the through hole abuts against the jig 210, and the other end facing away from the through hole abuts against the support 230.

[0079] When the jig, damper, and support are in contact or abut each other, the jig and support compress the damper. When the damper is compressed, it generates resistance to both the jig and the support. When the jig that is in contact with the damper is removed, the support remains in a state where the damper is fixed. The damper deforms according to the size of the space, generating resistance towards the through-hole side of the cartridge.

[0080] In one alternative embodiment, the damping element can be a spring. When the fixture is removed, the spring changes from a compressed state to a free state, and the spring bounces to generate resistance toward the card slot side.

[0081] Continue to refer to Figure 7 The side wall of the cartridge body is also provided with a first through hole 201 that matches the plunger lug, and the first through hole 201 is connected to the through hole 200. When the outer diameter of the plunger lug is larger than the outer diameter of the side wall of the cartridge pump, the plunger lug will protrude from the first slot and the second slot. When the pump assembly is assembled with the cartridge body, a matching first through hole is provided for the plunger lug of the pump assembly, so that the plunger lug in the pump assembly is inserted through the hole formed by the connection between the first through hole and the through hole.

[0082] Based on the above-mentioned cartridge body and pump assembly, this application embodiment further provides a step of assembling the pump assembly to the cartridge body to form a cartridge.

[0083] Figure 8 and Figure 10 This is a schematic diagram illustrating the steps of assembling the card box in an embodiment of this application. Wherein, Figure 8 This is a flowchart illustrating the assembly method of the pump assembly and the cartridge body in an embodiment of this application. Figure 10 This is a schematic diagram illustrating the steps of assembling the card box in an embodiment of this application.

[0084] refer to Figure 8 The assembly method of the pump assembly and the cartridge body can specifically include:

[0085] Step S81: Insert the pump assembly into the cartridge body, wherein the plunger lug is inserted into the cartridge body along the through hole, and the pump assembly passes through the damping member and connects with the support member.

[0086] Step S83: Remove the fixture that abuts the damping element, so that the damping element provides damping in the pump assembly in the direction of pushing towards the side wall of the cartridge body.

[0087] The above assembly method allows the pump assembly to be assembled with the cartridge body. The assembly process is convenient and easy to complete, and the assembled cartridge is quite sturdy.

[0088] In another embodiment, the plunger lug may also protrude from the first and second slots. (See reference) Figure 9 Step S82 can also be set between step S81, where the pump assembly is inserted into the cartridge body, and step S83, where the fixture that abuts the damping component is removed.

[0089] Step S82: Rotate the pump assembly to separate the second slot of the pump assembly from the through hole.

[0090] When the plunger lug protrudes from the first and second retaining slots, during assembly, the damping element provides resistance to the plunger lug in the pump assembly, pushing it towards the side wall of the cartridge body, thereby securing the plunger lug against the side wall of the cartridge body (see reference). Figure 2 (Perspective).

[0091] For more specific details, please refer to Figure 10 As shown, the pump assembly 11 is inserted into the through hole of the cartridge body 20. The front end of the pump assembly 11 extends into the interior of the damping member 220. When the front end of the pump assembly 11 is in contact with the support member 230, the pressing and limiting ring and the limiting groove on the side wall of the pump assembly 11 hold the cartridge pump on the side wall of the cartridge body. At this time, the pump assembly is rotated to separate the second slot of the pump assembly from the through hole, that is, to make the direction of the second slot offset from the through hole of the cartridge body. The jig 210 that abuts against the damping member 220 is removed. The damping member 220 deforms, providing damping to drive the pump assembly to move and make it close to the through hole on the side wall of the cartridge body.

[0092] In other optional embodiments of this application, combined with Figure 10 As shown, when the plunger lug protrudes from the first and second slots, the side wall of the cartridge body has a structure connecting the through hole and the first through hole, which is referred to as the hole. The plunger lug is inserted along the hole connecting the through hole and the first through hole, and the front end of the pump assembly 11 extends into the damping member 220. When the front end of the pump assembly 11 connects with the support member 230, the pressing and limiting ring and the limiting groove on the side wall of the pump assembly 11 hold the cartridge pump against the side wall of the cartridge body. At this time, rotating the plunger lug of the pump assembly separates the second slot where the plunger lug is located from the hole, that is, it shifts the direction of the second slot away from the hole of the cartridge body. The fixture 210 that abuts against the damping member 220 is removed, causing the damping member 220 to deform and provide damping to move the plunger lug of the pump assembly closer to the through hole on the side wall of the cartridge body, thus holding the plunger lug against the side wall of the cartridge body.

[0093] In some embodiments, combined with Figure 2 and Figure 10 As shown, the inverted structure may specifically include a pressing limiting ring 114 fixedly connected to the side wall of the cartridge pump, and a limiting groove 115 located between the pressing limiting ring 114 and the side wall of the cartridge pump 110. The pressing limiting ring 114 and the limiting groove 115 are adjacent to each other, and the inner diameter of the limiting groove matches the inner diameter of the through hole.

[0094] The direction in which the cartridge pump extends is considered the head, and the direction opposite to the direction of extension is considered the tail. In one optional embodiment, the inverted structure is preferably disposed on the side wall of the cartridge pump at the tail end. In other optional embodiments, the inverted structure may also be disposed on the side wall of the cartridge pump at a predetermined distance from the tail end.

[0095] In one embodiment, a second through hole 1140 is provided on the pressing limit ring 114. The second through hole 1140 is connected to the first slot. The second through hole is used for the plunger pump to be inserted from the inverted structure of the cartridge pump.

[0096] In one alternative embodiment, the outer diameter of the second through hole is larger than the outer diameter of the plunger lug, so that the plunger lug of the plunger pump can pass through the second through hole of the pressing limit ring, realizing the connection between the plunger pump and the cartridge pump, and then assembling the plunger pump and the cartridge pump into a cartridge.

[0097] In one embodiment, the card holder has a length of less than 120mm, a width of less than 100mm, and a height of less than 75mm. The card holder has a miniaturized structural design, which can effectively save space.

[0098] In this embodiment, the cartridge body and pump assembly are detachable. The cartridge body and pump assembly are separately molded and then assembled into a cartridge. The molds for the individual pump assembly or cartridge body are simple to produce, making the cartridge easy to manufacture. Furthermore, the cartridge pump in the pump assembly has an inverted snap-fit ​​structure, reducing the difficulty of fixing the pump assembly to the cartridge body and making the connection between the pump assembly and the cartridge body more stable.

[0099] Furthermore, since the pump assembly and cartridge body are assembled to form the cartridge, the cartridge is actually a detachable structure. The disassembly process is relatively simple, and the disassembled parts can be stored separately, which helps save space. In addition, if either the pump assembly or the cartridge body is damaged, only the damaged part can be replaced, and a new cartridge can be assembled according to the aforementioned method. This approach can effectively reduce the cost of using the cartridge.

[0100] The foregoing describes multiple embodiment schemes provided by the embodiments of this application. The optional methods described in each embodiment scheme can be combined and cross-referenced with each other without conflict, thereby extending to a variety of possible embodiment schemes. These can all be considered as the embodiment schemes disclosed and published by the embodiments of this application.

[0101] While the embodiments disclosed above are described in this application, this application is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of this application; therefore, the scope of protection of this application should be determined by the scope defined in the claims.

Claims

1. A cartridge, characterized by, The application relates to a pump assembly and a cartridge body. The pump assembly comprises a cartridge pump and a pump plunger for being inserted into the cartridge pump, and a side wall end of the cartridge pump is provided with an undercut structure. The cartridge body is provided with a through hole in a side wall thereof, and the through hole is matched with the undercut structure of the cartridge pump to enable the undercut structure of the pump assembly to be clamped in the side wall of the cartridge body. The pump plunger comprises a plunger ear for pushing the pump plunger into the cartridge pump. The side wall of the cartridge pump is provided with a first clamping groove and a second clamping groove matched with the plunger ear, and the first clamping groove and the second clamping groove extend along the extension direction of the cartridge pump. The first clamping groove extends to the undercut structure of the cartridge pump and penetrates through the undercut structure, and the second clamping groove extends to the communication port to enable the plunger ear to be inserted into the cartridge pump along the first clamping groove and twisted into the second clamping groove through the communication port.

2. The cartridge of claim 1, wherein, When the pump plunger is in the inserted state with the cartridge pump, the plunger ear protrudes from the first clamping groove and the second clamping groove.

3. The cartridge of claim 1, wherein, The side wall of the cartridge body is further provided with a first through hole matched with the plunger ear, and the first through hole is communicated with the through hole.

4. The cartridge of claim 3, wherein, The cartridge body comprises a supporting member and a damping member for supporting the pump assembly.

5. A pump assembly characterized by, The supporting member is used for supporting one end of the pump assembly away from the undercut structure. The damping member is arranged between the supporting member and the through hole and is used for providing damping to the plunger ear towards one side of the through hole. The cartridge body further comprises a jig between the through hole and the damping member. The jig is detachable and is used for fixing the damping member between the supporting member and the through hole before the pump assembly is assembled into the cartridge body and is removed after the pump assembly is assembled into the cartridge body. The undercut structure comprises a pressing limiting ring fixedly connected with the side wall of the cartridge pump and a limiting groove on the side wall of the cartridge pump. The outer diameter of the pressing limiting ring is greater than the outer diameter of the plunger ear, and the pressing limiting ring is provided with a second through hole connected with the first clamping groove. The outer diameter of the second through hole is greater than the outer diameter of the plunger ear. The application relates to a pump assembly and a cartridge body. The pump assembly comprises a cartridge pump and a pump plunger for being inserted into the cartridge pump, and a side wall end of the cartridge pump is provided with an undercut structure. The undercut structure is matched with a through hole in a side wall of a cartridge body and is used for clamping the pump assembly in the through hole in the side wall of the cartridge body. The pump plunger comprises a plunger ear for pushing the pump plunger into the cartridge pump. The cartridge pump has a first slot and a second slot on its side wall that match the plunger lug. The first slot and the second slot extend along the extension direction of the cartridge pump. A communication port is provided between the first slot and the second slot. The first slot extends to and through the undercut structure of the cartridge pump. The second slot extends to the communication port so that the plunger lug is inserted into the cartridge pump along the first slot and twisted into the second slot through the communication port. When the pump plunger is in the inserted state with the cartridge pump, the plunger lug protrudes from the first slot and the second slot.

6. The pump assembly of claim 5, wherein, The inverted structure includes a pressing limiting ring fixedly connected to the side wall of the cartridge pump, and a limiting groove located on the side wall of the cartridge pump, wherein the pressing limiting ring and the limiting groove are adjacent to each other, and the inner diameter of the limiting groove matches the inner diameter of the through hole.

7. The pump assembly of claim 6, wherein, The outer diameter of the pressing limiting ring is larger than the outer diameter of the plunger ear, and the pressing limiting ring is provided with a second through hole, the second through hole is connected to the first slot, and the outer diameter of the second through hole is larger than the outer diameter of the plunger ear.

8. A method of assembling a cartridge, characterized by, Applied to the card holder as described in any one of claims 1-4, comprising: A pump plunger is inserted into the inside of a cartridge pump to form a pump assembly, wherein the side wall end of the cartridge pump is provided with an inverted structure; The pump assembly is assembled into the through hole on the side wall of the cartridge body, wherein the snap-fit ​​structure of the pump assembly engages with the through hole; The pump plunger includes at least a plunger lug, and the side wall of the cartridge pump has a first slot and a second slot that match the plunger lug. A communication port is provided between the first slot and the second slot. The step of inserting the pump plunger into the cartridge pump to form a pump assembly includes: Insert the plunger lug of the pump plunger along the first slot of the cartridge pump; In the communication port, the plunger lug of the pump plunger is twisted into the second slot.

9. The cartridge assembly method of claim 8, wherein, The cartridge body includes a support member and a damping member for supporting the pump assembly, and a fixture located between the through hole and the damping member, wherein the fixture abuts against the damping member, and the through hole for assembling the pump assembly to the side wall of the cartridge body includes: The pump assembly is inserted into the cartridge body, wherein the plunger lug is inserted into the cartridge body along the through hole, and the pump assembly passes through the damping member and connects to the support member; Remove the fixture that opposes the damping element, so that the damping element provides damping in the pump assembly in the direction of pushing towards the side wall of the cartridge body.

10. The cartridge assembly method of claim 9, wherein, The plunger lug protrudes from the first and second slots. After inserting the pump assembly into the cartridge body and before removing the fixture that abuts the damping element, the procedure further includes: Rotate the pump assembly to separate the second slot of the pump assembly from the through hole.

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