reservoir assembly

Abstract

The application relates to the technical field of electronic cigarettes, and discloses a liquid storage bin assembly, which comprises a main body and a child lock shell. The main body comprises a first locking portion, a storage cavity for storing aerosol generating substrate and a lead-out channel for leading out the aerosol generating substrate, and the child lock shell is removably connected to the main body to shield the lead-out channel. The child lock shell comprises a movable plate extending in the circumferential direction and elastically deformable in the radial direction and a second locking portion arranged on the movable plate, so that when the child lock shell is connected to the main body, the movable plate can be elastically deformed in the radial direction, and the second locking portion is removably locked with the first locking portion. Therefore, the child lock shell can be prevented from being broken when connected to the main body, the child lock shell can shield the lead-out channel, and the cost of mold opening can be reduced.

Description

Technical Field

[0001] This application relates to the field of electronic cigarette technology, and in particular to a liquid storage tank assembly. Background Technology

[0002] An aerosol generator is a device that heats a liquid aerosol-generating matrix to form an atomized aerosol for users to inhale. Aerosol generators are typically designed as separate units, including a main unit and a storage tank. The main unit integrates a power supply, heating unit, and control unit, while the storage tank contains the liquid aerosol-generating matrix. The storage tank is detachable from the main unit. When the aerosol-generating matrix in the storage tank is depleted, the old storage tank can be removed and replaced with a new one, reducing operating costs.

[0003] Since the storage tank can be stored independently, the outlet port of the storage tank needs to be protected during independent storage to prevent unauthorized personnel from damaging the seal of the outlet port and causing leakage of the aerosol generation matrix in the storage tank. In the prior art, a removable disposable end cap is used on the storage tank to cover the outlet port. However, in order to prevent the disposable end cap from breaking when connected to the housing of the storage tank, a relatively complex guide trajectory is required to guide the disposable end cap to connect to the housing of the storage tank and to guide the disposable end cap to be removed from the housing, resulting in high costs. Utility Model Content

[0004] This application provides a liquid storage tank assembly that enables the child lock housing to block the outlet channel at a lower cost.

[0005] In a first aspect, one technical solution adopted in the embodiments of this application is: providing a liquid storage tank assembly, including a main body and a child lock housing. The main body includes a first locking part, a storage cavity, and a discharge channel; the child lock housing is removably connected to the main body to block the discharge channel. The child lock housing includes a base shell and a movable plate extending axially. A first end of the movable plate is connected to the base shell, and a second end of the movable plate is a free end facing the main body. The movable plate is provided with a second locking part, and the movable plate is configured to elastically deform in the radial direction of the base shell, so that when the child lock housing is connected to the main body, the second locking part and the first locking part are removably locked together.

[0006] In some embodiments, the second locking portion is configured to removably engage with the first locking portion when the child lock housing is attached to the body.

[0007] In some embodiments, the first locking portion includes at least a first engaging portion and a second engaging portion; the second locking portion includes at least a third engaging portion and a fourth engaging portion, wherein the third engaging portion is closer to the first end of the movable plate than the fourth engaging portion, or only the third engaging portion is disposed at the first end; the first engaging portion is removably locked to the third engaging portion, and the second engaging portion is removably locked to the fourth engaging portion.

[0008] In some embodiments, the fourth latching portion is configured to not engage with the first latching portion during the removal of the child lock housing from the body.

[0009] In some embodiments, the number of the first fastening portions is at least two, wherein the two first fastening portions are located on opposite sides of the central axis of the second fastening portion; and / or, the first fastening portions and the second fastening portions have different shapes or different sizes.

[0010] In some embodiments, the fourth fastening portion is disposed at the second end of the movable plate.

[0011] In some embodiments, the first locking part includes a latching groove; the second locking part includes a hook, which engages with the latching groove.

[0012] In some embodiments, the second locking part has a first guide slope on the side opposite to the bottom wall of the base shell, the first guide slope being configured to guide the second locking part to engage with the first locking part during the connection of the child lock housing to the body; and / or, the second locking part has a second guide slope on the side near the bottom wall of the base shell, the second guide slope being configured to guide the second locking part to separate from the first locking part during the removal of the child lock housing from the body.

[0013] In some embodiments, the child lock housing has a first strip groove and a second strip groove spaced apart in the circumferential direction, the first strip groove and the second strip groove extending axially, and the movable plate located between the first strip groove and the second strip groove.

[0014] In some embodiments, along the axial direction, the length L1 of the first strip groove satisfies: L1≥9mm; the length L2 of the second strip groove satisfies: L2≥9mm.

[0015] In some embodiments, the body includes a liquid guide column, at least partially defining the outlet channel within the liquid guide column; the reservoir assembly further includes a seal having a mating groove for receiving the liquid guide column; when the body is connected to the child lock housing, the seal seals the outlet channel, and the seal is axially compressed between the child lock housing and the body to elastically deform.

[0016] In some embodiments, the number of movable plates is at least two, and the at least two movable plates are arranged opposite each other in the radial direction of the child lock housing, or arranged in an array in the circumferential direction of the child lock housing.

[0017] The beneficial effects of this application embodiment are as follows: The main body of the liquid storage tank assembly of this application embodiment includes a first locking part, a storage cavity for storing the aerosol generation matrix, and an outlet channel for discharging the aerosol generation matrix. The child lock housing is removably connected to the main body to block the outlet channel. The child lock housing includes a movable plate extending circumferentially and elastically deformable in the radial direction, and a second locking part disposed on the movable plate. Thus, when the child lock housing is connected to the main body, the movable plate can undergo radial elastic deformation, thereby removably locking the second locking part with the first locking part. Therefore, it can prevent the child lock housing from breaking when connected to the main body, ensure that the child lock housing blocks the outlet channel, and reduce mold opening costs. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the specific embodiments of this application, the accompanying drawings used in the description of the specific embodiments will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0019] Figure 1 This is an exploded view of the liquid storage tank assembly according to an embodiment of this application;

[0020] Figure 2 This is an exploded view of the liquid storage tank assembly according to an embodiment of this application;

[0021] Figure 3 yes Figure 1 A magnified view of part A in the middle;

[0022] Figure 4 This is an assembly diagram of the liquid storage tank assembly according to an embodiment of this application;

[0023] Figure 5 The liquid storage tank assembly in this application embodiment is along Figure 4 Sectional view of BB;

[0024] Figure 6 yes Figure 5A magnified view of part C in the middle.

[0025] The reference numerals in the detailed embodiments are as follows:

[0026] 100. Liquid storage tank assembly; 10. Main body; 11. First locking part; 111. First fastening part; 112. Second fastening part; 12. Storage cavity; 13. Liquid guide column; 131. Outlet channel; 14. Settling tank section; 15. Non-settling tank section; 16. Suction nozzle; 20. Child lock housing; 21. Base shell; 211. First strip groove; 212. Second strip groove; 22. Movable plate; 22a. First end; 22b. Second end; 221. Second locking part; 2211. Third fastening part; 2212. Fourth fastening part; 2213. First guide slope; 2214. Second guide slope; 30. Sealing element; 31. Connecting groove. Detailed Implementation

[0027] To facilitate understanding of this application, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as "connected" to another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "upper," "lower," "inner," "outer," "vertical," "horizontal," etc., used in this specification indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the application. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0029] Furthermore, the technical features involved in the different embodiments of this application described below can be combined with each other as long as they do not conflict with each other.

[0030] In some embodiments, the aerosol generating device includes a main unit and a liquid storage tank assembly 100. The main unit integrates a power supply component, a heating component, etc. The liquid storage tank assembly 100 includes a body 10 internally storing a liquid aerosol generating matrix. The body 10 can be mounted on the main unit. The body 10 can replenish the aerosol generating matrix in the storage chamber of the main unit, or it can directly supply the aerosol generating matrix to the heating component in the main unit. The heating component is configured to atomize the aerosol generating matrix to generate aerosols based on the electrical energy provided by the power supply component. In some embodiments of this application, the body 10 can be non-detachably mounted on the main unit, so that the two cannot be separated after the body 10 is connected to the main unit. Of course, in some embodiments of this application, the body 10 can be configured to be removably mounted on the main unit, so that when the aerosol generating matrix in the body 10 is exhausted, the old body 10 can be removed and replaced with a new body 10 to reduce the cost of use.

[0031] In some embodiments, please refer to Figure 1 and Figure 2 The liquid storage tank assembly 100 includes a child lock housing 20. The main body 10 includes a first locking part 11 and a storage cavity 12 for storing the aerosol generation matrix (e.g., Figure 5 (as shown) and an export channel 131 for exporting the aerosol generation matrix.

[0032] The child lock housing 20 is removably attached to the main body 10 to cover the outlet channel 131. When the child lock housing 20 is attached to the main body 10, the main body 10 can be stored independently of the main unit, and the child lock housing 20 covers the outlet channel 131, thereby helping to keep the outlet channel 131 sealed; the main body 10 can be assembled onto the main unit after the child lock housing 20 is removed.

[0033] The child lock housing 20 includes a base housing 21 and a movable plate 22 extending axially. A first end 22a of the movable plate 22 is connected to the base housing 21, and a second end 22b of the movable plate 22 is a free end facing the main body 10. The movable plate 22 is provided with a second locking portion 221, and the movable plate 22 is configured to elastically deform in the radial direction of the base housing 21, so that when the child lock housing 20 is connected to the main body 10, the second locking portion 221 removably locks into contact with the first locking portion 11.

[0034] In some embodiments, the first locking part 11 on the main body 10 is configured to lock into the main unit of the aerosol generating device, thereby holding the main body 10 on the main unit. Thus, the first locking part 11 can lock into both the main unit and the second locking part 221 on the child lock housing 20, thereby simplifying the structure of the main body 10 and helping to reduce costs. More specifically, the main unit is provided with a third locking part. When the liquid storage tank assembly 100 is assembled with the main unit, the first locking part 11 and the third locking part are locked together. The second locking part 221 has the same structural features as the third locking part.

[0035] In some embodiments, the child lock housing 20 is configured to be connected to the body 10 along the axial direction. The movable plate 22 can be elastically deformed in the radial direction so that during the connection process, the movable plate 22 can expand outward in the radial direction. This not only reduces the difficulty of connecting the child lock housing 20 and the body 10, allowing the child lock housing 20 to be quickly and securely connected to the body 10, but also prevents the child lock housing 20 from breaking. At the same time, the movable plate 22 can also provide elasticity to keep the first locking part 11 and the second locking part 221 in a stable locking engagement.

[0036] In some embodiments, please refer to Figure 1 and Figure 2 The main body 10 is generally cylindrical and has a proximal end and a distal end. The proximal end of the main body 10 gradually narrows towards the center to form a suction nozzle 16 for the user's mouth to contact. The distal end of the main body 10 is used to connect with the child lock housing 20. The main body 10 also has a liquid guide column 13, in which at least a portion of the outlet channel 131 is defined. The child lock housing 20 is connected to the distal end of the main body 10 and can shield the liquid guide column 13, helping to keep the liquid guide column 13 sealed and preventing leakage of the aerosol generation matrix in the storage cavity 12. In some examples, a first locking part 11 on the main body 10 is located near the distal end to facilitate connection with the child lock housing 20.

[0037] In some embodiments, please refer to Figure 1 and Figure 4 The main body 10 includes a submerged section 14 and a non-submerged section 15 connected to each other. The outer diameter of the submerged section 14 is smaller than the outer diameter of the non-submerged section 15. The proximal end of the main body 10 is located in the non-submerged section 15, and the distal end is located in the submerged section 14. A first locking part 11 is disposed in the submerged section 14. A child lock housing 20 is connected to the submerged section 14. Along the radial direction of the main body 10, the outer surface of the child lock housing 20 is flush with the outer surface of the non-submerged section 15, or the outer surface of the child lock housing 20 is lower than the outer surface of the non-submerged section 15, so as to prevent the outer surface of the child lock housing 20 from protruding from the main body 10 in the radial direction, which would make it easy for external objects to hit the child lock housing 20 and cause it to separate and fall off from the main body 10.

[0038] In some embodiments, please refer to Figure 1 and Figure 3 When the child lock housing 20 is attached to the main body 10, the base housing 21 blocks the outlet channel 131. Furthermore, the base housing 21 includes a bottom wall and an annular sidewall attached to the bottom wall, so that a portion of the main body 10 can be surrounded by the annular sidewall when the child lock housing 20 is attached to the main body 10.

[0039] The movable plate 22 is attached to the annular sidewall. As an example, the movable plate 22 is seamlessly connected to the annular sidewall, with no obvious dividing line between them. As an example, the movable plate 22 can be integrally injection molded with the base shell 21.

[0040] In some embodiments, the child lock housing 20 has a first strip groove 211 and a second strip groove 212 spaced apart in the circumferential direction. The first strip groove 211 and the second strip groove 212 extend axially, and the movable plate 22 is located between the first strip groove 211 and the second strip groove 212, thereby defining a portion of the boundary of the first strip groove 211 and a portion of the boundary of the second strip groove 212.

[0041] Furthermore, the annular sidewall includes a base and a protrusion, the movable plate 22 is connected to the base, and the movable plate 22 has a first strip groove 211 between itself and the protrusion on one side, and a second strip groove 212 between itself and the protrusion on the other side.

[0042] In some embodiments, such as Figure 4 As shown, along the axial direction, the length L1 of the first strip groove 211 satisfies: L1≥9mm; the length L2 of the second strip groove 212 satisfies: L2≥9mm.

[0043] In some embodiments, the movable plate 22 is configured to be more elastically deformable than the protrusion. For example, the elastic modulus of the movable plate 22 is less than that of the protrusion. Alternatively, the circumferential extension length of the protrusion is greater than the circumferential extension length of the movable plate 22, or the central angle corresponding to the protrusion is greater than the central angle corresponding to the movable plate 22, preferably the central angle corresponding to the movable plate 22 is less than or equal to 90°. Alternatively, the thickness of the protrusion is greater than the thickness of the movable plate 22. Alternatively, the axial length of the protrusion is less than the axial length of the movable plate 22.

[0044] It should be noted that in other embodiments, the base shell 21 includes a bottom wall and a protrusion connected to the bottom wall. The movable plate 22 is connected to the bottom wall. The movable plate 22 has a first strip groove 211 between itself and the protrusion on one side, and a second strip groove 212 between itself and the protrusion on the other side.

[0045] In some embodiments, the number of movable plates 22 on the child lock housing 20 can be one, two, or more than three. When the number of movable plates 22 is at least two, at least two movable plates 22 are arranged opposite each other in the radial direction of the child lock housing 20, or arranged in an array in the circumferential direction of the child lock housing 20. Each movable plate 22 is provided with a second locking part 221, and the main body 10 is provided with a corresponding number and position of first locking parts 11, so that the main body 10 and the child lock housing 20 form multiple locking structures, thereby improving the connection between the two.

[0046] In some embodiments, the second locking portion 221 on the movable plate 22 is configured to removably engage with the first locking portion 11 when the child lock housing 20 is connected to the main body 10. When the child lock housing 20 is connected to the main body 10, the movable plate 22 provides elasticity, allowing the first locking portion 11 to stably engage with the second locking portion 221. Furthermore, the engagement between the first locking portion 11 and the second locking portion 221 can be released by deforming the movable plate 22, thereby allowing the child lock housing 20 to be removed from the main body 10. Further, during the connection process, simply pushing the child lock housing 20 axially completes the engagement with the main body 10, simplifying the operation.

[0047] As an example, please refer to Figure 1 The first locking part 11 includes at least a first engaging part 111 and a second engaging part 112; the first engaging part 111 and the second engaging part 112 are spaced apart in the axial direction of the main body 10. The second locking part 221 includes at least a third engaging part 2211 and a fourth engaging part 2212, the third engaging part 2211 being closer to the first end 22a of the movable plate 22 than the fourth engaging part 2212, the first engaging part 111 being removably locked to the third engaging part 2211, and the second engaging part 112 being removably locked to the fourth engaging part 2212.

[0048] In some embodiments, the first fastening part 111 and the third fastening part 2211 are fastened together, and the second fastening part 112 and the fourth fastening part 2212 are fastened together. Firstly, compared to having only one set of fastening structures, the above structure can form two sets of fastening structures in the axial direction, thereby improving the locking effect between the child lock housing 20 and the main body 10. Secondly, since the first end 22a of the movable plate 22 is connected to the base shell 21, and the second end 22b of the movable plate 22 is a free end, and the deformation is greater the closer to the second end 22b of the movable plate 22, if the fastening part is only provided at the second end 22b of the movable plate 22, it is easy for the child lock housing 20 and the main body 10 to not be fastened tightly, and the second end 22b of the movable plate 22 is easy to deform, causing the child lock housing 20 to detach from the main body 10. Therefore, by setting the third fastening part 2211 to be closer to the first end 22a of the movable plate 22 than the fourth fastening part 2212, the deformation at the third fastening part 2211 is reduced, thereby improving the firmness of the third fastening part 2211 when it is fastened to the first fastening part 111 and preventing the child lock shell 20 from falling off the main body 10.

[0049] In some embodiments, only the third fastening portion 2211 is disposed at the first end 22a of the movable plate 22; the fourth fastening portion 2212 is disposed in the region between the first end 22a and the second end 22b of the movable plate 22. In a further embodiment, the third fastening portion 2211 is disposed at the first end 22a of the movable plate 22, and the fourth fastening portion 2212 is disposed at the second end 22b of the movable plate 22. Of course, in other embodiments, both the third fastening portion 2211 and the fourth fastening portion 2212 may be disposed in the region between the first end 22a and the second end 22b of the movable plate 22.

[0050] In some embodiments, the fourth latching part 2212 is configured not to lock with the first latching part 111 during the removal of the child lock housing 20 from the body 10. This allows the child lock housing 20 to be directly separated from the body 10, preventing the child lock housing 20 from being latched and locked onto the body 10 again during disassembly, thus affecting the disassembly process.

[0051] As an example, during the process of the fourth engaging part 2212 moving along the body 10 to engage with the second engaging part 112, the movement trajectory of the fourth engaging part 2212 is offset from the position of the first engaging part 111 to prevent the fourth engaging part 2212 from engaging with the first engaging part 111. Similarly, during the process of the fourth engaging part 2212 moving along the body 10 to disengage from the body 10, because the movement trajectory is offset from the position of the first engaging part 111, it is possible to prevent the fourth engaging part 2212 from engaging with the first engaging part 111 again after disengaging from the second engaging part 112.

[0052] For further details, please refer to Figure 1 and Figure 3 The number of first fastening parts 111 is at least two, with the two first fastening parts 111 located on opposite sides of the central axis of the second fastening part 112, so that the fourth fastening part 2212 can be prevented from fastening and connecting with the first fastening part 111 during the movement of the fourth fastening part 2212 along the main body 10.

[0053] As an example, the shape and size of the fourth engaging portion 2212 are adapted to the shape and size of the second engaging portion 112, so that the fourth engaging portion 2212 can be engaged with the second engaging portion 112. Similarly, the shape and size of the third engaging portion 2211 are adapted to the shape and size of the first engaging portion 111, so that the third engaging portion 2211 can be engaged with the first engaging portion 111. Wherein, the first engaging portion 111 and the second engaging portion 112 have different shapes and / or sizes, or the third engaging portion 2211 and the fourth engaging portion 2212 have different shapes and / or sizes, to prevent the fourth engaging portion 2212 from being engaged with the first engaging portion 111 and to prevent the third engaging portion 2211 from being engaged with the second engaging portion 112.

[0054] In some embodiments, the number of third fastening portions 2211 is the same as the number of first fastening portions 111, and the plurality of third fastening portions 2211 can be fastened to the plurality of first fastening portions 111 in a one-to-one correspondence. The number of second fastening portions 112 is one or different from the number of first fastening portions 111, and the number of fourth fastening portions 2212 is the same as the number of second fastening portions 112. During the separation of the child lock housing 20 from the main body 10, an external force acts on the child lock housing 20, causing the third fastening portions 2211 to separate from the first fastening portions 111, and the fourth fastening portions 2212 to separate from the second fastening portions 112. Furthermore, during the axial movement of the child lock housing 20 relative to the main body 10, when the fourth fastening portion 2212 moves to a position corresponding to the first fastening portion 111, since the fourth fastening portion 2212 cannot be fastened to the first fastening portion 111, the child lock housing 20 can continue to move axially to detach from the main body 10.

[0055] In some embodiments, the first locking part 11 includes a latching groove, and the second locking part 221 includes a hook, the hook being able to engage with the latching groove. In other embodiments, the first locking part 11 includes a hook, and the second locking part 221 includes a latching groove.

[0056] As an example, the first engaging part 111 and the second engaging part 112 in the first locking part 11 are both fastening grooves, and the third engaging part 2211 and the fourth engaging part 2212 in the second locking part 221 are both hooks.

[0057] Please see Figure 3 and Figure 6 The second locking part 221 has a first guide slope 2213 on the side opposite to the bottom wall of the base shell 21. The first guide slope 2213 is configured to guide the second locking part 221 to engage with the first locking part 11 during the connection between the child lock housing 20 and the main body 10. With the first guide slope 2213 on the second locking part 221, when the child lock housing 20 is connected to the main body 10, the second locking part 221 first abuts against the end of the main body 10. Under the guidance of the first guide slope 2213, the end of the main body 10 exerts a radial compression on the second locking part 221, causing the second end 22b of the movable plate 22 to deform radially outward. This continues to apply force to the child lock housing 20, pushing it to move until the second locking part 221 and the first locking part 11 lock into place, thus fixing the child lock housing 20 to the main body 10.

[0058] The surface of the second locking part 221 near the bottom wall of the base shell 21 is perpendicular to the axis of the base shell 21. This allows the surface of the second locking part 221 to abut and lock against the side wall of the first locking part 11, securely locking the child lock housing 20 to the main body 10. When it is necessary to separate the child lock housing 20 from the main body 10, a force is applied to the child lock housing 20 away from the main body 10 until the second locking part 221 disengages from the first locking part 11. The child lock housing 20 can then move relative to the main body 10 to achieve separation.

[0059] In some embodiments, the second locking part 221 is provided with a second guide slope 2214 on the side near the bottom wall of the base shell 21. The second guide slope 2214 is configured to guide the second locking part 221 to separate from the first locking part 11 during the removal of the child lock housing 20 from the main body 10. By providing the second guide slope 2214 on the second locking part 221, the force driving the child lock housing 20 to separate from the main body 10 can be appropriately reduced, while also preventing the first locking part 11 and the second locking part 221 from failing to separate.

[0060] In some embodiments, please refer to Figure 1 and Figure 5 The liquid storage tank assembly 100 also includes a seal 30, which has a mating groove 31 for receiving the liquid guide column 13. The seal 30 is disposed at the distal end of the main body 10, or disposed in the child lock housing 20. When the main body 10 is connected to the child lock housing 20, the seal 30 seals the outlet channel 131. Furthermore, the seal 30 is axially compressed between the child lock housing 20 and the main body 10 to elastically deform, thereby applying an axial force to the child lock housing 20, causing the child lock housing 20 to have a tendency to move away from the main body 10. Under the locking action of the first locking part 11 and the second locking part 221, the child lock housing 20 remains locked to the main body 10, reducing the relative shaking between the two, and ensuring the sealing effect of the seal 30 on the liquid guide channel.

[0061] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A liquid storage tank assembly, characterized in that, include: The main body includes a first locking part, a storage cavity for storing the aerosol generation matrix, and an export channel for exporting the aerosol generation matrix; and A child lock housing is removably attached to the body to cover the outlet channel. The child lock housing includes a base shell and an axially extending movable plate. A first end of the movable plate is connected to the base shell, and a second end of the movable plate is a free end facing the body. The movable plate is provided with a second locking part, and the movable plate is configured to be elastically deformable in the radial direction, so that when the child lock housing is connected to the main body, the second locking part is removably locked in place with the first locking part.

2. The liquid storage tank assembly according to claim 1, characterized in that, The second locking part is configured to removably engage with the first locking part when the child lock housing is attached to the body.

3. The liquid storage tank assembly according to claim 2, characterized in that, The first locking part includes at least a first engaging part and a second engaging part; The second locking part includes at least a third engaging part and a fourth engaging part, wherein the third engaging part is closer to the first end of the movable plate than the fourth engaging part, or only the third engaging part is provided at the first end; The first fastening part and the third fastening part are removably locked together, and the second fastening part and the fourth fastening part are removably locked together.

4. The liquid storage tank assembly according to claim 3, characterized in that, The fourth fastening part is configured to not engage with the first fastening part during the removal of the child lock housing from the body.

5. The liquid storage tank assembly according to claim 4, characterized in that, The number of the first engaging portions is at least two, wherein the two first engaging portions are located on opposite sides of the central axis of the second engaging portion; and / or The first fastening part and the second fastening part have different shapes or different sizes.

6. The liquid storage tank assembly according to claim 3, characterized in that, The fourth fastening part is located at the second end of the movable plate.

7. The liquid storage tank assembly according to claim 2, characterized in that, The first locking part includes a buckle groove; the second locking part includes a hook, which engages with the buckle groove.

8. The liquid storage tank assembly according to claim 2, characterized in that, The second locking part has a first guide slope on the side opposite to the bottom wall of the base shell. The first guide slope is configured to guide the second locking part to engage with the first locking part during the connection between the child lock housing and the main body; and / or, The second locking part has a second guide ramp on the side near the bottom wall of the base shell. The second guide ramp is configured to guide the second locking part to separate from the first locking part during the removal of the child lock housing from the main body.

9. The liquid storage tank assembly according to claim 1, characterized in that, The child lock housing has a first strip groove and a second strip groove spaced apart in the circumferential direction. The first strip groove and the second strip groove extend axially, and the movable plate is located between the first strip groove and the second strip groove.

10. The liquid storage tank assembly according to claim 9, characterized in that, Along the axial direction, the length L1 of the first strip groove satisfies: L1≥9mm; the length L2 of the second strip groove satisfies: L2≥9mm.

11. The liquid storage tank assembly according to any one of claims 1-10, characterized in that, The main body includes a liquid guiding column, and the outlet channel is at least partially defined in the liquid guiding column; The liquid storage tank assembly also includes a seal having a docking groove for receiving the liquid guide column; When the body is connected to the child lock housing, the seal seals the outlet channel, and the seal is axially compressed between the child lock housing and the body to elastically deform.

12. The liquid storage tank assembly according to claim 1, characterized in that, The number of movable plates is at least two, and the at least two movable plates are arranged opposite each other in the radial direction of the child lock housing, or arranged in an array in the circumferential direction of the child lock housing.

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