Liquid injection device

Abstract

The application discloses a liquid injection device. The liquid injection device comprises a shell assembly, a containing assembly and a pump liquid assembly. The shell assembly has a liquid storage cavity for storing flavor liquid. The containing assembly is arranged on the shell assembly and comprises a support and a liquid injection needle arranged on the support. The liquid injection needle does not extend out of the support. The support is used for containing an aerosol base. When at least part of the aerosol base is placed in the support, the liquid injection needle is inserted into the aerosol base and extends to a position of 1 / 4-3 / 4 of the aerosol base. The diameter of the liquid injection needle is 0.1-5 mm. The pump liquid assembly is connected to the shell assembly and is used for pumping the flavor liquid in the liquid storage cavity into the aerosol base through the liquid injection needle. According to the technical scheme, users can match the liquid injection device with different flavors according to their own needs, can control the injection amount of the flavor liquid and accurately inject the flavor liquid into a proper position of the aerosol base, avoid loss of the flavor liquid and enable users to obtain better taste experience.

Description

Technical Field

[0001] This application relates to the field of cigarette liquid injection technology, and in particular to a liquid injection device. Background Technology

[0002] Traditional aerosol matrix structures consist of a filter section and a tobacco section. Smokers inhale the aerosol produced by the tobacco section through the aerosol filter section. Some aerosol matrices have a flavor capsule inside the filter section. Before inhaling the aerosol, the capsule is popped, exposing the liquid inside to the filter section. This allows the aerosol to pass through the filter section while smoking, bringing out the flavor of the flavor capsule liquid for the user to inhale. However, the flavor capsule liquid is a customized product and is pre-installed inside the filter section before the aerosol matrix leaves the factory. Users cannot freely choose the flavor and amount of flavor capsule liquid. In addition, when the user pops the capsule, some flavor capsule liquid splashes out from the end of the filter section, reducing the satisfying experience from the flavor concentration, resulting in a poor user experience. Utility Model Content

[0003] This application provides a liquid injection device, which aims to solve the problems in the prior art where the bursting liquid is already installed in the cigarette during the manufacturing process, which prevents users from freely choosing the flavor and amount of bursting liquid, and the bursting liquid splashes out of the aerosol matrix, reducing the flavor concentration and resulting in a poor user experience.

[0004] To achieve the above objectives, this application proposes a liquid injection device, comprising: a housing assembly having a storage chamber for storing flavor liquid; a receiving assembly disposed on the housing assembly, the receiving assembly including a support and an injection needle disposed on the support, the injection needle not extending out of the support, the support for receiving an aerosol matrix, wherein when at least a portion of the aerosol matrix is ​​placed into the support, the injection needle is inserted into the aerosol matrix and extends to 1 / 4 to 3 / 4 of the aerosol matrix; the diameter of the injection needle is 0.1 to 5 mm; and a pumping assembly connected to the housing assembly for pumping the flavor liquid in the storage chamber into the aerosol matrix through the injection needle.

[0005] In some embodiments, the aerosol matrix includes an aerosol generating section and an aerosol filtering section connected to the aerosol generating section, and the injection needle is inserted to 1 / 4 to 3 / 4 of the position of the aerosol filtering section.

[0006] In some embodiments, the support is provided with a cavity, and the aerosol filter section is at least partially inserted into the cavity so that the injection needle is inserted into the aerosol filter section along the center position of the aerosol filter section.

[0007] In some embodiments, the receiving assembly further includes an adjustment block that matches the shape of the cavity. The adjustment block is disposed between the aerosol substrate and the inner wall of the cavity. The adjustment block is used to adjust the tightness of the fit between the aerosol substrate and the inner wall of the cavity. The bottom end of the adjustment block is provided with a mesh hole, and the bottom end of the cavity is provided with a liquid suction element.

[0008] In some embodiments, the receiving component is provided with a snap-fit ​​structure, and the adjusting block is snapped into the cavity through the snap-fit ​​structure; a chamber is formed inside the adjusting block, one end of the chamber is provided with an insertion hole for inserting the aerosol matrix, and the other end is provided with a needle hole for the injection needle to pass through, and the insertion hole and the needle hole are coaxially arranged.

[0009] In some embodiments, the snap-fit ​​structure includes a first limiting step formed at the top edge of the cavity and a blocking block protruding from the inner wall of the cavity; the snap-fit ​​structure also includes a second limiting step that matches the first limiting step at the top of the adjusting block, and a snap bone protruding from the outer wall of the adjusting block, a relief groove formed between the head and tail ends of the snap bone, and the tail end of the snap bone bent toward the insertion hole to form a limiting claw; wherein, the adjusting block is installed in the cavity, the second limiting step abuts against the first limiting step, and the blocking block enters between the snap bone and the second limiting step through the relief groove and can be limited and stopped by the limiting claw.

[0010] In some embodiments, the housing assembly includes: Oil tank shell, which has liquid storage space; An oil tank cover is installed on the top of the oil tank shell, forming the liquid storage cavity together with the oil tank shell; a first mounting cavity and a second mounting cavity are formed on the oil tank cover, the first mounting cavity is connected to the top of the oil tank cover, the second mounting cavity is connected to the liquid storage cavity, and the top of the second mounting cavity is provided with a first through hole that communicates with the first mounting cavity; The receiving component is disposed in the first mounting cavity, the pumping component is disposed in the second mounting cavity, and the pumping component is connected to the injection needle through the first through hole.

[0011] In some embodiments, the pump assembly includes: The pump outer tube has its top end snapped into the second mounting cavity and its bottom end extending toward the bottom of the liquid storage cavity; the bottom end of the pump outer tube has a liquid inlet hole and the top end has a second through hole that matches the first through hole. A piston is movably disposed in the outer tube of the pump. The piston has a liquid outlet channel connected to the injection needle. The piston and the outer tube of the pump together form a transfer chamber for transferring flavor liquid. A sealing ball is disposed at the liquid inlet hole; When the piston moves toward the inlet port, it squeezes the flavor liquid in the transfer chamber and discharges it from the outlet channel; and when the piston moves away from the inlet port, a negative pressure is formed in the transfer chamber, and the sealing ball opens the inlet port to draw flavor liquid from the storage chamber into the transfer chamber.

[0012] In some embodiments, the piston member includes: A drive tube is movably disposed inside the external tube of the pump, and the top end of the drive tube is connected to the injection needle; A compression seat is connected to the bottom end of the drive tube to move with the drive tube, and a flow guide channel is provided between the compression seat and the drive tube; A sealing seat is movably configured corresponding to the compression seat, used to block or open the flow channel; When the piston moves toward the liquid inlet, the sealing seat opens the flow channel to connect the drive tube and the transfer chamber to form the liquid outlet channel; and when the piston moves away from the liquid inlet, the sealing seat blocks the flow channel, and the sealing seat moves synchronously with the compression seat.

[0013] In some embodiments, a first elastic element abuts between the bottom end of the compression seat and the inner wall of the pump outer tube, the sealing seat is sleeved on the drive tube, a limiting ring is formed on the outer side wall of the drive tube near its top end, and a second elastic element abuts between the top end of the sealing seat and the limiting ring. Wherein, when the drive tube is not driven, the top end of the limiting ring abuts against the upper end of the pump outer tube; and a third limiting step is provided inside the pump outer tube, the third limiting step being used to limit the movement of the compression seat toward the liquid inlet side.

[0014] In some embodiments, an air inlet is provided on the side wall of the pump outer pipe. The air inlet is positioned higher than the liquid level of the flavor liquid in the storage chamber. When the sealing seat is not driven, the sealing seat blocks the air inlet. When the sealing seat is driven, the air inlet can be unsealed, so that the storage chamber can exchange air with the outside through the air inlet.

[0015] In some embodiments, the compression seat includes: The main body is shaped to match the shape of the inner cavity of the pump outer pipe, and the top end of the main body and the bottom end of the drive pipe are spaced apart. A protruding bone is connected to the main body and extends into the drive tube. The protruding bone and the drive tube are in a transition fit, and multiple guide grooves are spaced apart along the length direction on the periphery of the protruding bone. When the main body disengages from the sealing seat, the flow channel is opened; when the main body makes contact with the sealing seat, the flow channel is blocked.

[0016] In some embodiments, a button is also included. The button is disposed in the first mounting cavity and is used to drive the drive tube to slide toward the liquid inlet. The button is provided with a pump connection and a second pipe connection. The pump connection and the second pipe connection are in a communication state. The pump connection is sleeved on the top end of the drive tube, and the second pipe connection is connected to the injection needle through a flexible tube.

[0017] In some embodiments, the housing assembly further includes: The lower cover is fitted onto the oil tank shell; The upper cover is hinged to the short side of the lower cover; and, A flexible pressure-resistant structure is provided between the upper cover and the oil tank cover, which is used to keep the upper cover in an open or closed state.

[0018] In some embodiments, the flexible pressure-resistant structure includes: A spring clip, the spring clip being connected to the oil tank cover; The abutment block has one end rotatably mounted on the oil tank cover and the other end is a free end. The abutment block has a first pressing point and a second pressing point on both sides of its rotation center, which are respectively in contact with the spring sheet. The upper cover has an internal pressure plate that is opposite to the side wall of the hinge side. When the spring piece presses against the first pressure point, the free end of the abutment block presses against the pressure plate to keep the upper cover closed. When the spring piece presses against the second pressure point, the free end of the abutment block presses against the side wall of the upper cover near the hinge side to keep the upper cover open.

[0019] This application provides a liquid injection device, which includes a housing assembly, a receiving assembly, and a pumping assembly. The housing assembly has a storage chamber for storing flavor liquid. The receiving assembly includes a support and an injection needle mounted on the support. The support is used to receive an aerosol matrix. When at least a portion of the aerosol matrix is ​​placed into the support, the injection needle is inserted into the aerosol matrix and extends to 1 / 4 to 3 / 4 of the aerosol matrix. The diameter of the injection needle is 0.1 to 5 mm. The pumping assembly is connected to the housing assembly and is used to pump the flavor liquid from the storage chamber out through the injection needle. The technical solution of this application aims to address the issue of adding additional flavors to an aerosol matrix. The aerosol matrix is ​​placed into a receiving component, with the injection needle inserted into the matrix at 1 / 4 to 3 / 4 of its length. The user then activates a pumping component to pump the flavor liquid from the reservoir into the aerosol matrix via the injection needle. The injection needle diameter is 0.1–5 mm to prevent excessively rapid pumping and potential damage to the aerosol matrix. This allows for precise control of the flavor liquid injection volume and accurate placement into the appropriate location within the aerosol matrix, minimizing flavor liquid loss and maximizing the timely delivery of flavor and taste, resulting in a superior taste experience for the user. Attached Figure Description

[0020] 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 some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein: Figure 1 This is a cross-sectional view of the injection device in Scheme 1 of this application; Figure 2 This is a schematic diagram of the exploded structure of the injection device in Scheme 1 of this application; Figure 3 for Figure 1 Schematic diagram of the operating status of the liquid injection device; Figure 4 In the figure, (a) is a cross-sectional view of the oil tank cover, and (b) is an axial view of the oil tank cover. Figure 5 This is a schematic diagram of the structure of a spring sheet according to an embodiment of this application; Figure 6 In the diagram, (a) is a schematic diagram of the axial structure of the support, and (b) is a schematic diagram of the cross-sectional structure of the support. Figure 7 In the diagram, (a) is a schematic diagram of the axial structure of the adjustment block, and (b) is a schematic diagram of the cross-sectional structure of the adjustment block. Figure 8In the diagram, (a) is a cross-sectional view of the button, and (b) is an axial view of the button. Figure 9 for Figure 1 Schematic diagram of the structure of the pump fluid assembly; Figure 10 for Figure 1 Exploded view of the liquid assembly of the intermediate pump; Figure 11 for Figure 9 Schematic diagram of the structure of the intermediate compression seat; Figure 12 In the diagram, (a) is a schematic diagram of the liquid injection device in its initial state; (b) is a schematic diagram of the liquid injection device in its first pressing state; and (c) is a schematic diagram of the liquid injection device in its second pressing state. Figure 13 for Figure 1 A schematic diagram of the electrically driven hydraulic pump assembly; Figure 14 This is a schematic diagram of the liquid injection device in Scheme 2 of this application; Figure 15 This is a schematic diagram of the liquid injection device in Scheme 3 of this application. Detailed Implementation

[0021] 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 a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0022] It should be noted that, unless otherwise stated or limited, all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0023] It should also be noted that, unless otherwise stated or limited, when an element is referred to as "fixed to" or "set on" another element, it may be directly on the other element or there may be an intervening element present. When an element is referred to as "connected to" another element, it may be directly connected to the other element or there may be an intervening element present.

[0024] Furthermore, unless otherwise stated or limited, the descriptions involving "first," "second," etc., in this application are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0025] See Figures 1-3 As shown, this application proposes a liquid injection device 100, which includes a housing assembly 10, a receiving assembly 20, and a pumping assembly 30. The housing assembly 10 has a storage chamber 11 for storing flavor liquid. The receiving assembly 20 is disposed on the housing assembly 10 and includes an injection needle 21, which communicates with the storage chamber 11 and is used to insert into an aerosol matrix 200. The pumping assembly 30 is connected to the housing assembly 10 and is used to pump the flavor liquid in the storage chamber 11 out through the injection needle 21.

[0026] The technical solution of this application aims to enhance the flavor of the aerosol matrix 200 when it is aspirated. The aerosol matrix 200 is placed in the receiving component 20, and the injection needle 21 in the receiving component 20 is inserted into the aerosol matrix 200. Then, the user drives the pumping component 30 to pump the flavor liquid in the storage chamber 11 into the aerosol matrix 200 through the injection needle 21.

[0027] The different injection devices 100 can store flavor liquids with different flavors, such as flavor liquids with nutty aromas like almonds and hazelnuts, flavor liquids with fruity aromas like oranges, blueberries, mangoes, and peaches, and flavor liquids with herbal flavors like mint, licorice, and green tea. Therefore, users can inject flavor liquids with corresponding flavors into the aerosol matrix 200 according to their own preferences. Furthermore, users can select the injection volume of flavor liquid according to their needs. That is, the volume of flavor liquid pumped out by the pumping unit 30 in a single operation is 1 to 300 microliters. In other words, the volume of flavor liquid that can be pumped out in a single operation is: 1 microliter, 5 microliter, 8 microliter, 10 microliter, 12 microliter, 15 microliter, 18 microliter, 20 microliter, 22 microliter, 25 microliter, 28 microliter, 30 microliter, 35 microliter, 40 microliter, 45 microliter, 50 microliter, 55 microliter, 60 microliter, 65 microliter, 70 microliter, 75 microliter, 80 microliter, 85 microliter, 90 microliter, 100 microliter, 150 microliter, 180 microliter, 200 microliter, 250 microliter, or 300 microliter, etc.

[0028] For example, during a complete pumping operation of the pump assembly 30, 30 microliters of flavor liquid can be pumped into the aerosol matrix 200 via the injection needle 21. By adjusting the number of pumping operations of the pump assembly 30, the amount of flavor liquid injected into the aerosol matrix 200 can be accumulated, allowing the user to precisely control the amount of flavor liquid injected. Alternatively, the pump assembly 30 can be configured to pump 30 microliters of flavor liquid into the aerosol matrix 200 via the injection needle 21 during a complete operation. The user can precisely adjust the amount of flavor liquid injected by controlling the driving stroke of the pump assembly 30, such as driving the pump assembly 30 to travel 1 / 3, 2 / 3, or the full stroke.

[0029] Thus, through the technical solution of this application, users can inject flavor liquid of corresponding flavor and corresponding injection amount into the aerosol matrix 200 according to their own needs, which not only meets personalized needs, but also enhances the vaping experience, and realizes the diversification and customization of the flavor of the aerosol matrix 200.

[0030] Preferably, the pump volume of flavor liquid in a single operation of the pump liquid assembly 30 is 10 to 100 microliters, specifically 10 microliters, 12 microliters, 15 microliters, 18 microliters, 20 microliters, 22 microliters, 25 microliters, 28 microliters, 30 microliters, 35 microliters, 40 microliters, 45 microliters, 50 microliters, 55 microliters, 60 microliters, 65 microliters, 70 microliters, 75 microliters, 80 microliters, 85 microliters, 90 microliters, or 100 microliters. This range of single pump volume is more suitable for the aerosol filtration section of the existing aerosol matrix 200, allowing users to fully experience the flavor substances.

[0031] It should also be noted that with this solution, users only need to purchase the aerosol matrix 200 and then match it with the liquid injection device 100 according to actual needs. This not only enables flexible switching of the flavor of the aerosol matrix 200, avoiding the limitations of the traditional single aerosol matrix 200, but also reduces the user's purchase cost of the aerosol matrix 200.

[0032] The following are different configuration schemes for the injection device: Option 1 See Figure 1-5 As shown, in some embodiments, the housing assembly 10 includes an oil tank shell 12 and an oil tank cover 13; the oil tank shell 12 has a liquid storage space; the oil tank cover 13 is disposed on the top of the oil tank shell 12 and together with the oil tank shell 12 forms a liquid storage cavity 11.

[0033] In this embodiment, the oil tank shell 12 and the oil tank cover 13 are detachably connected, facilitating user cleaning and replacement of the flavor liquid, ensuring the hygiene and ease of use of the device. In one specific configuration, the lower end of the oil tank cover 13 can be partially embedded in the oil tank shell 12, and the embedded part is connected to the oil tank shell 12 by a snap-fit ​​connection (a snap groove is provided on the inner wall of the oil tank shell 12, and the snap-fit ​​on the side wall of the oil tank cover 13 fits tightly with the snap groove), screw locking, or other detachable connection methods; and, the lower end of the oil tank cover 13 has an embedding groove 136 around its periphery, and a sealing ring is placed in the embedding groove 136 to ensure the sealing between the oil tank cover 13 and the oil tank shell 12 and prevent flavor liquid leakage. Multiple sets of embedding grooves 136 and sealing rings can be provided.

[0034] Optionally, the oil tank cover 13 is provided with a first mounting cavity 131 and a second mounting cavity 132 to further provide space for the installation of the housing assembly 20 and the pumping assembly 30, ensuring that the components are stable and easy to maintain. Specifically, the first mounting cavity 131 communicates with the top of the oil tank cover 13, the second mounting cavity 132 communicates with the liquid storage cavity 11, and the top of the second mounting cavity 132 is provided with a first through hole 133 communicating with the first mounting cavity 131. The housing assembly 20 is disposed in the first mounting cavity 131, which facilitates the operation of the components in the first mounting cavity 131 from the outside, such as the installation and adjustment of the housing assembly 20, and facilitates the insertion and removal of the aerosol substrate 200 by the user. The pump assembly 30 is disposed in the second mounting cavity 132, so that the pump assembly 30 can directly draw flavor liquid from the storage cavity 11; and based on the first through hole 133, the pump assembly 30 is connected to the injection needle 21 through the first through hole 133, so that the flavor liquid drawn by the pump assembly 30 can be delivered into the injection needle 21, thereby realizing the function of delivering flavor liquid to the aerosol matrix 200.

[0035] See Figure 1 and Figure 2 As shown, in some embodiments, the housing assembly 10 further includes a lower cover 14 and an upper cover 15. The lower cover 14 is fitted onto the oil tank housing 12 and can be fastened by means of clips or screws, etc., which will not be described in detail. The upper cover 15 is hinged to the short side of the lower cover 14, so that the upper cover 15 and the lower cover 14 can form protection for the internal components such as the oil tank housing 12, the oil tank cover 13, and the housing assembly 20, etc., while facilitating operation. A flexible pressing structure 16 is provided between the upper cover 15 and the oil tank cover 13. The flexible pressing structure 16 is used to keep the upper cover 15 in an open or closed state to ensure convenient operation and safety.

[0036] Specifically, the flexible pressure-resistant structure 16 includes a spring piece 161 and a stop block 162. The spring piece 161 is connected to the oil tank cover 13. One end of the stop block 162 is rotatably mounted on the oil tank cover 13, and the other end is a free end. A first pressure point and a second pressure point are respectively provided on both sides of the rotation center of one end of the stop block 162, which are in contact with the spring piece 161. A pressure plate 151 is provided inside the upper cover 15, opposite to the side wall of the hinge side. When the spring piece 161 contacts the first pressure point, the free end of the stop block 162 presses against the pressure plate 151, keeping the upper cover 15 closed. When the spring piece 161 contacts the second pressure point, the free end of the stop block 162 presses against the side wall of the hinge side of the upper cover 15, keeping the upper cover 15 open. When the upper cover 15 is open, it is convenient to insert the aerosol matrix into the receiving assembly 20 and pump liquid into the aerosol matrix. Figure 3 The diagram shown illustrates the operational status of the liquid injection device.

[0037] Understandably, the free end of the abutment block 162 is typically located between the hinged sidewall of the upper cover 15 and the pressure plate 151. Thus, during the rotational opening of the upper cover 15, the pressure plate 151 abuts against the free end of the abutment block 162, driving the abutment block 162 to rotate in the first direction. During this process, one end of the abutment block 162 overcomes the elastic pressure of the spring piece 161, turning from the first pressure point to the second pressure point, achieving stable opening of the upper cover 15. Similarly, during the rotational closing of the upper cover 15, the hinged sidewall abuts against the free end of the abutment block 162, driving the abutment block 162 to rotate in the second direction. During this process, one end of the abutment block 162 also overcomes the elastic pressure of the spring piece 161, turning from the second pressure point to the first pressure point. The first and second directions are opposite directions. To ensure smooth rotation, reduce friction, and extend service life, the shape design of the abutment block 162 includes multiple curved angles.

[0038] More specifically, the oil tank cover 13 has a deformation space 134 formed from top to bottom near the hinge side. The bottom of the deformation space 134 is hollowed out towards the side walls to form clamping grooves 135. The deformation space 134 and clamping grooves 135 are in a conductive state with the side of the oil tank cover 13 to facilitate the installation of the spring clip 161. The spring clip 161 includes a platform 163, lugs 164 connected to the platform 163, and a deformation portion 165. The lugs 164 are arranged opposite each other on the same side of the platform 163, and the deformation portion 165 is disposed between the two opposite lugs 164. This design allows the spring clip 161 to be installed as follows: The lugs 164 on both sides of the platform 163 correspond to the clamping grooves 135 on both sides of the bottom of the deformation space 134, and the deformation part 165 corresponds to the deformation space 134. Pushing the spring piece 161 causes the lugs 164 to embed into the clamping grooves 135 and the deformation part 165 to enter the deformation space 134, until the entire spring piece 161 is completely inserted into the oil tank cover 13. The overall embedding depth of the spring piece 161 should match the depth of the clamping groove 135, and the thickness of the platform 163 and the lugs 164 should match the width of the clamping groove 135 to ensure the spring piece 161 is securely embedded. In this way, the clamping of the oil tank cover 13 onto the platform 163 and the lug 164 achieves stable positioning of the spring piece 161 in the Z-axis direction. Furthermore, after the spring piece 161 is installed in place, a lower cover 14 can be fitted around the oil tank shell 12, sealing the spring piece 161. This, in conjunction with the oil tank cover 13, achieves positioning of the spring piece 161 in the X and Y axes. This design achieves multi-dimensional stable positioning of the spring piece 161 within the oil tank cover 13, and simplifies parts assembly, reducing production costs.

[0039] See Figure 1 As shown, in some embodiments, a plurality of partition plates 121 are provided between the oil tank shell 12 and the oil tank cover 13 to divide the liquid storage chamber 11 into a plurality of sub-liquid storage chambers 11; wherein, each partition plate 121 has a connecting hole at its bottom to connect each sub-liquid storage chamber 11.

[0040] In this embodiment, after forming multiple sub-liquid storage chambers 11, the installed pump assembly 30 is typically located in the outermost sub-liquid storage chamber 11. When the pump assembly 30 draws liquid, it first obtains flavor liquid from the sub-liquid storage chamber 11 at its location or from a connected sub-liquid storage chamber 11. As the flavor liquid is consumed, flavor liquid from other sub-liquid storage chambers 11 is replenished through connecting holes, ensuring that the pump assembly 30 operates continuously and stably. The design of multiple sub-liquid storage chambers 11 disperses the sloshing of liquid into each sub-liquid storage chamber 11, reducing drastic fluctuations in the overall liquid level and enabling the pump assembly 30 to draw liquid more stably.

[0041] Furthermore, in a further shell design, the surfaces of the upper cover 15 and the lower cover 14 can be patterned, with the pattern protruding from the cover surface. This enhances the product's aesthetics, increases visual depth, strengthens the user's tactile experience, effectively prevents slippage, and makes operation more convenient and comfortable.

[0042] See Figure 6 As shown, in some embodiments, the receiving component 20 further includes a support 22 disposed within the first mounting cavity 131, the support 22 being used to receive the aerosol substrate 200. The support 22 and the oil tank cover 13 are also designed to be detachable, preferably with a snap-fit ​​engagement between a buckle and a groove.

[0043] The support 22 includes a support body 221 and a first pipe connection 222. A cavity 220 is formed within the support body 221, with an open top. The injection needle 21 is positioned within the cavity 220, preferably centrally located, with one end inserted into the bottom of the cavity 220 and the other end extending towards the open end of the cavity 220 without protruding beyond it. The cavity 220 is a hollow space conforming to the shape of the aerosol substrate 200, effectively guiding and fixing the insertion of the aerosol substrate 200, ensuring precise alignment between the aerosol substrate 200 and the injection needle 21. The first pipe connection 222 is located at the bottom of the support body 221, corresponding to and communicating with the injection needle 21. The free end of the first pipe connection 222 is used to connect to the pump assembly 30; this further establishes a communication channel between the injection needle 21 and the pump assembly 30, facilitating the delivery of flavor liquid within the storage chamber 11.

[0044] In some embodiments, the cavity 220 is shaped as an inverted cone from top to bottom; or the cavity 220 is shaped as a cylinder.

[0045] In this embodiment, two configuration shapes for the cavity 220 are proposed: cylindrical and inverted conical. The inverted conical shape indicates that the inner wall of the cavity 220 tapers in a tapered manner, with different diameters at different elevations, thus adapting to the insertion requirements of aerosol substrates 200 of different diameters. The cylindrical cavity 220, on the other hand, is more suitable for the insertion of a single aerosol substrate 200.

[0046] In a further preferred embodiment, regardless of how the cavity 220 is set, after at least part of the aerosol matrix 200 is placed into the support 22, the injection needle 21 is inserted into the aerosol matrix 200, and the injection needle 21 extends to 1 / 4 to 3 / 4 of the aerosol matrix.

[0047] The aerosol matrix 200 can be a product without an aerosol filter section, such as a cigar or a hand-rolled cigarette.

[0048] In this embodiment, the aerosol matrix 200 includes an aerosol generation section, and the injection needle 21 is inserted to the position of 1 / 4 to 3 / 4 of the aerosol generation section.

[0049] The aerosol matrix 200 can be a product with an aerosol filter section, such as a cigar, tobacco, or hand-rolled cigarette.

[0050] In this embodiment, the aerosol matrix 200 includes an aerosol generating section and an aerosol filtering section connected to the aerosol generating section. The injection needle 21 is inserted to the 1 / 4 to 3 / 4 position of the aerosol filtering section, specifically, to the 1 / 4 to 3 / 4 position of the aerosol filtering section of the aerosol matrix 200. For example, the injection needle 21 can be inserted to 1 / 4, 1 / 2, or 3 / 4 of the aerosol filtering section, allowing the flavor liquid to be released at this position. This position is closest to the user's mouth, making it easier for the user to perceive the flavor and providing a stronger sense of satisfaction. It also prevents the loss of flavor components. Furthermore, during smoking, the aerosol carries away the flavor components as it passes through this section. Therefore, when smoking, the user can first inhale the flavor of the product, followed by the aerosol mixed with the flavor components, enhancing the layering of flavors and improving the user experience, thus satisfying user needs. Simultaneously, it prevents the user from inhaling the flavor liquid in this section, further enhancing the user's smoking experience.

[0051] Specifically, the aerosol filter segment is at least partially inserted into the cavity 220 so that the injection needle 21 is inserted into the aerosol filter segment along its center position. In other words, the cavity 220 can be used alone to accommodate the aerosol filter segment and correct the positional relationship between the aerosol filter segment and the injection needle 21, so that the insertion position formed by the aerosol filter segment and the injection needle 21 of each aerosol matrix 200 is consistent, thereby ensuring that the flavor perceived by the user when using the aerosol matrix remains stable.

[0052] In some embodiments, the insertion end of the injection needle 21 is a spike, and the aerosol filter section of the aerosol matrix 200 is provided with a guide slit. The diameter of the injection needle 21 is 0.1–5 mm, preferably 0.3–1.5 mm, for example, the diameter of the injection needle 21 is 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1.0 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, or 1.5 mm. This structure and size setting allows for easy insertion into the aerosol filter section of the aerosol matrix 200, avoiding compression deformation of the aerosol filter section or causing the filling material of the aerosol filter section to clump together, thus affecting the smoking experience. Furthermore, the finer size of the injection needle 21 allows for control of the liquid pumping speed, preventing liquid impact from deflecting to other parts of the aerosol filter section or puncturing the aerosol matrix 200, causing liquid leakage to the outside of the aerosol filter section and affecting the smoking experience.

[0053] Furthermore, the receiving component 20 also includes an adjustment block 23 that matches the shape of the cavity 220. The adjustment block 23 is disposed between the aerosol substrate 200 and the inner wall of the cavity 220. The adjustment block 23 is used to adjust the tightness of the fit between the aerosol substrate and the inner wall of the cavity 220.

[0054] The adjusting block 23 is replaceable. By replacing the adjusting block 23 with different specifications, different specifications of aerosol substrate 200 can be firmly inserted into the cavity 220, thereby improving the compatibility of the liquid injection device 100 with aerosol substrate 200 of various specifications.

[0055] The receiving component 20 is equipped with a snap-fit ​​structure, through which the adjusting block 23 snaps into the cavity 220. For example... Figure 7 As shown, the adjusting block 23 has a chamber 231. One end of the chamber 231 has an insertion hole 232 for inserting the aerosol substrate 200, and the other end has a needle hole 233 for the injection needle 21 to pass through. The insertion hole 232 and the needle hole are coaxially arranged. It is understood that the inner diameter of the adjusting block 23 is smaller than the inner diameter of the cavity 220. When it is necessary to adapt to a smaller diameter aerosol substrate 200, the adjusting block 23 is inserted into the cavity 220 through a snap-fit ​​structure. At this time, the aerosol substrate 200 is inserted into the chamber 231 of the adjusting block 23, which is equivalent to fixing it in a space with a smaller inner diameter. This achieves fine adjustment of the inner diameter of the cavity 220, allowing the aerosol substrate 200 to fit into the cavity of that diameter. Furthermore, the injection needle 21 can pass through the needle hole 233 of the adjusting block 23 to continue injecting liquid into the aerosol substrate 200 without affecting the basic function of the device. Preferably, the adjusting block 23 also has different inner diameter specifications, so as to select the appropriate adjusting block 23 according to the diameter of different aerosol substrates 200, and ensure the precise docking of the aerosol substrate 200 and the injection needle 21.

[0056] Furthermore, a liquid-absorbing element 223 can be provided at the bottom of the cavity 220, and a mesh hole 238 is provided at the bottom of the adjusting block 23. In this way, the flavor liquid leaking through the injection needle 21 can flow further into the bottom of the cavity 220 through the mesh hole 238 and be absorbed by the liquid-absorbing element 223, preventing the flavor liquid from accumulating in the receiving cavity and contaminating the aerosol filter section of the aerosol matrix 200, thus affecting the user experience. The liquid-absorbing element 223 can be absorbent cotton, which has good liquid absorption performance.

[0057] See Figure 6 and Figure 7As shown, in some embodiments, the snap-fit ​​structure includes a first limiting step 225 formed on the support body 221 around the top edge of the cavity 220, and a blocking block 226 protruding from the inner wall of the cavity 220; the snap-fit ​​structure also includes a second limiting step 236 provided on the adjusting block 23 to match the first limiting step 225, and a ring of snap bones 234 protruding from the outer wall of the adjusting block 23, with a relief groove 235 formed between the head and tail ends of the snap bones 234, and the tail end of the snap bones 234 bent toward the insertion hole 232 to form a limiting claw 2341; wherein, the adjusting block 23 is installed in the cavity 220, the second limiting step 236 abuts against the first limiting step 225, and the blocking block 226 enters between the snap bones 234 and the second limiting step 236 through the relief groove 235 and can be limited and stopped by the limiting claw 2341.

[0058] In this embodiment, the principle process of installing the adjusting block 23 onto the support 22 is as follows: Align the adjusting block 23 with the cavity 220, and align the clearance groove 235 on the adjusting block 23 with the blocking block 226. Then, push the adjusting block 23 into the cavity 220. During this process, the blocking block 226 will pass through the clearance groove 235 and enter the side of the retainer 234 near the insertion hole 232, until the second limiting step 236 and the first limiting step 225 abut and limit each other. Then, rotate the adjusting block 23 so that the blocking block 226 enters the angle formed by the retainer 234 and the limiting claw 2341. In this way, the blocking block 226 can press against the inside of the retainer 234, preventing the adjusting block 23 from detaching from the support 22, thus achieving stable engagement of the adjusting block 23.

[0059] To further facilitate the rotation of the adjustment block 23, a friction texture 237 is provided at the top of the adjustment block 23. The design of the friction texture 237 increases the friction between the finger and the adjustment block 23. A rotation indicator can also be provided at the top of the adjustment block 23 to help users quickly identify the rotation direction of the adjustment block 23, ensuring simple and efficient operation. The rotation indicator can be an arrow, a color block, etc.

[0060] Optionally, after the adjusting block 23 is assembled into the cavity 220, the second limiting step 236 abuts against the first limiting step 225, and the blocking block 226 is located above the retaining bone 234 with a gap between it and the retaining bone 234. That is, after the adjusting block 23 is installed, the adjusting block 23 has a displacement distance toward the opening end of the cavity 220. This displacement distance is set so that when the aerosol substrate 200 is pulled out, the aerosol substrate 200 first moves relative to the injection needle 21, and then moves relative to the adjusting block 23. This sequential control during the pulling process can prevent the injection needle 21 from being damaged by friction or impact.

[0061] See Figure 9 and Figure 10As shown, in some embodiments, the pump assembly 30 includes an outer pump tube 31, a piston 32, and a sealing ball 33. The aim is to achieve the extraction and discharge of the flavor liquid through the reciprocating motion of the piston 32 and the automatic opening and closing of the sealing ball 33.

[0062] The pump outer tube 31 has its top end snapped into the second mounting cavity 132 and its bottom end extending towards the bottom of the liquid storage cavity 11. This allows the pumping assembly 30 to easily connect its top end to the receiving assembly 20 in the first mounting cavity 131, and to be mostly immersed in the flavor liquid in the liquid storage cavity 11. Furthermore, the presence of an inlet hole 311 at the bottom end of the pump outer tube 31 further ensures sufficient pumping of the flavor liquid from the liquid storage cavity 11. The top end of the pump outer tube 31 has a second through hole 361 that matches the first through hole 133. The piston 32 is movably disposed within the pump outer tube 31. Near the inlet hole 311, the piston 32 and the pump outer tube 31 enclose a transfer cavity 312 for transferring the flavor liquid. The piston 32 can slide axially back and forth within the pump outer tube 31. This back-and-forth stroke is fixed, forming a quantitative change in the volume of the transfer chamber 312. A liquid outlet channel is provided on the piston 32, which is connected to the injection needle 21. The piston 32 moves along its fixed stroke to squeeze out a quantitative amount of flavor liquid, which is then pumped into the aerosol matrix 200. The sealing ball 33 is located at the liquid inlet 311. It can disengage from the liquid inlet 311 under negative pressure in the transfer chamber 312 to draw flavor liquid from the storage chamber 11, and under positive pressure, it presses the liquid inlet 311 to prevent backflow.

[0063] The working process and principle of a pump assembly 30 are as follows: During the discharge stage, the piston 32 moves towards the inlet hole 311 (presses down), the volume of the transfer chamber 312 decreases, and the pressure inside the chamber increases. At this time, the positive pressure pushes the sealing ball 33 to press tightly against the inlet hole 311, blocking the liquid in the transfer chamber 312 from entering the storage chamber 11; the liquid is discharged through the outlet channel and flows to the injection needle 21, completing the pumping process. During the suction stage, the piston 32 moves away from the inlet hole 311 (pulls up), the volume inside the transfer chamber 312 increases, and the pressure decreases to negative pressure. The negative pressure draws open the sealing ball 33, and the liquid in the storage chamber 11 enters the transfer chamber 312 through the inlet hole 311. This continues until the pressure inside the transfer chamber 312 returns to normal, and the sealing ball 33 closes again, completing one suction cycle.

[0064] There is a direct relationship between the stroke of the piston 32 and the pumping volume of the flavor liquid. When the stroke is fixed, the pumping volume of the flavor liquid in the transfer chamber 312 remains constant. Therefore, the correspondence between the stroke of the piston 32 and the pumping volume of the flavor liquid can be set during the assembly and shipment of the pumping assembly 30. This ensures that a fixed amount of flavor liquid is pumped out during a single operation of the pumping assembly 30, facilitating user operation according to actual needs. The pumping volume of the flavor liquid during a single cycle is 10–100 microliters, preferably 15–70 microliters.

[0065] Understandably, during the upward pulling of the piston 32, air needs to enter the liquid storage chamber 11 to balance the negative pressure and prevent the flavor liquid from being unable to be drawn in due to the negative pressure. Typically, a corresponding air-injection structure can be installed on the side wall of the liquid storage chamber 11, such as a diaphragm-type one-way air inlet valve, which automatically opens the air inlet channel under negative pressure and closes it under positive or normal pressure to prevent backflow.

[0066] Optional, such as Figure 9 As shown, the piston component 32 includes a drive tube 321, a compression seat 322, and a sealing seat 323. The drive tube 321 is movably disposed inside the pump outer tube 31, and its top end communicates with the injection needle 21. The compression seat 322 is connected to the bottom end of the drive tube 321 to move with the drive tube 321, and a flow channel is provided between the compression seat 322 and the drive tube 321. The sealing seat 323 is movably disposed corresponding to the compression seat 322 and is used to block or open the flow channel. Specifically, when the piston component 32 moves toward the inlet hole 311, the sealing seat 323 opens the flow channel to connect the drive tube 321 and the transfer chamber 312 through the flow channel to form an outlet channel; and when the piston component 32 moves away from the inlet hole 311, the sealing seat 323 blocks the flow channel, and the sealing seat 323 moves synchronously with the compression seat 322.

[0067] In this embodiment, as one driving method, the driving pipe 321 and the sealing seat 323 can be driven by different driving components. The driving pipe 321 drives the compression seat 322 to move axially synchronously. Specifically, the driving pipe 321 is connected to the first driving component, and the sealing seat 323 is connected to the second driving component. During the downward pressing process, the first driving component first drives the driving pipe 321 to press down. At this time, the sealing seat 323 remains stationary to form a gap between the sealing seat 323 and the compression seat 322 to open the flow channel. Then, the second driving component drives the sealing seat 323 to press down. In this way, the liquid outlet channel can always be kept open during the pressing process. After the compression seat 322 is pressed into place, the sealing seat 323 continues to press down and move to re-form a seal with the compression seat 322, blocking the liquid storage channel. During the upward pulling process, the sealing seat 323 and the compression seat 322 move synchronously to always maintain a sealed state and fulfill the negative pressure requirement.

[0068] In another embodiment, a first elastic element 34 abuts between the bottom end of the compression seat 322 and the inner wall of the pump outer tube 31, a sealing seat 323 is sleeved on the drive tube 321, a limiting ring 324 is formed protruding on the outer side wall of the drive tube 321 near its top end, and a second elastic element 35 abuts between the top end of the sealing seat 323 and the limiting ring 324; wherein, when the drive tube 321 is not driven by an external force, the top end of the limiting ring 324 abuts against the upper end of the pump outer tube 31, and a third limiting step 314 is provided inside the pump outer tube 31, the third limiting step 314 being used to limit the compression seat 322 when it moves toward the liquid inlet 311.

[0069] In this embodiment, the aim of this structural design is to simultaneously drive the sealing seat 323 when the drive tube 321 is pressed down, and to automatically reset the sealing seat 323, the compression seat 322, and the drive tube 321. The principle process for achieving the above actions based on the above structural design is as follows: When a force is applied to drive the drive tube 321 downward, the rigid connection directly drives the compression seat 322 to overcome the elastic force of the first elastic member 34 and move downward. Due to the elastic delay of the sealing seat 323, a gap is generated between the compression seat 322 and the sealing seat 323 to open the flow channel. Thus, during the downward movement of the compression seat 322, the flavor liquid in the transfer chamber 312 is squeezed, allowing the flavor liquid to enter the drive tube 321 from the flow channel and continue through the connection between the drive tube 321 and the first pipe joint 222, so that the flavor liquid is finally pumped out through the injection needle 21. At the same time, as the compression seat 322 is pressed into place, the sealing seat 323 is pressed against the top of the compression seat 322 by the elastic force of the second elastic member 35, and a seal is formed again with the compression seat 322. Then, after the force applied to the drive pipe 321 is removed, the first elastic element 34 elastically recovers, driving the compression seat 322 and the sealing seat 323 to move upward synchronously in a sealed state until the top of the limiting ring 324 abuts against the upper end of the pump outer pipe 31, achieving dynamic balance.

[0070] With this elastic component structure, the air replenishment structure can have an air replenishment hole 315 on the side wall of the pump outer pipe 31. The air replenishment hole 315 is positioned higher than the liquid level of the flavor liquid in the storage chamber 11. When the sealing seat 323 is not driven by external force, the sealing seat 323 blocks the air replenishment hole 315. When the sealing seat 323 is driven, the air replenishment hole 315 can be unsealed, allowing the storage chamber 11 to exchange air with the outside through the air replenishment hole 315. Furthermore, when the sealing seat 323 is pressed down to expose the air replenishment hole 315, an air replenishment channel can be established from the outside - the second through hole - the air replenishment hole 315 - the storage chamber 11. This structural arrangement makes the interrelationship between components stronger.

[0071] Furthermore, a sealing ring 325 is provided at the top of the limiting ring 324 to improve the sealing performance when the limiting ring 324 presses against the pump outer pipe 31; and the pump outer pipe 31 includes a pipe cover 36 provided at the top, which is removable to facilitate the assembly of the internal components of the pump outer pipe 31. A second through hole 361 is formed on the pipe cover 36, and the limiting ring 324 presses against the pipe cover 36.

[0072] See Figure 11 As shown, in some embodiments, the compression seat 322 includes a main seat body 3221 and a rib 3222. The shape of the main seat body 3221 is adapted to the shape of the inner cavity of the pump outer pipe 31, and the top end of the main seat body 3221 is spaced apart from the bottom end of the drive pipe 321; the rib 3222 is connected to the main seat body 3221 and extends into the drive pipe 321, and the rib 3222 and the drive pipe 321 are in a transition fit, and a plurality of guide grooves 3223 are spaced apart along the length direction on the periphery of the rib 3222; wherein, when the main seat body 3221 is disengaged from the sealing seat 323, the guide channel is opened; when the main seat body 3221 is in contact with the sealing seat 323, the guide channel is blocked.

[0073] In this embodiment, the shape of the main seat 3221 is adapted to the shape of the inner cavity of the pump outer tube 31, so as to set a sufficiently large volume and reserve a sufficiently large compression space in the pump outer tube 31, so as to achieve a sufficient pumping volume through this balance. It is also understood that the total stroke distance of the compression seat 322 from its initial position to its lower limiting position is the total stroke distance of the compression seat 322. Figure 9 As shown, the total stroke distance is the distance of segment L2. The amount of flavor liquid that can be pumped out at this distance is the maximum amount of flavor liquid that can be pumped out in a single stroke. By setting the pumping volume in this stroke, the quantitative control of the flavor liquid in the device can be achieved. The top of the main seat 3221 and the bottom of the drive tube 321 are spaced apart to ensure that after the compression seat 322 is submerged below the surface of the flavor liquid, there is sufficient flavor liquid in contact with the guide channel 3223, ensuring that the flavor liquid can smoothly pass through the guide channel 3223 into the drive tube 321 for pumping out.

[0074] In this embodiment, the reciprocating stroke of the piston 32 within the pump outer tube 31 is 2~15mm. In other words, the stroke distance of the L2 segment is 2~15mm, which can be 2mm, 3mm, 5mm, 7mm, 8mm, 10mm, 12mm, 13mm or 15mm. This stroke range can sensitively link with the pump liquid volume and also facilitates user pressing operation to quantitatively pump liquid into the aerosol matrix 200.

[0075] Furthermore, the sealing structure can be a pressure seal between the sealing seat 323 and the compression seat 322. Specifically, it can be a pressure ring provided at the bottom of the sealing seat 323 to press against the main seat 3221. Preferably, the sealing seat 323 is made of soft rubber material with a certain degree of hardness, and its sidewalls and ends can be deformable to promote sealing. For example, the material of the sealing seat 323 includes PP material, as well as composite PA, PC materials, etc.

[0076] Optionally, the first elastic element 34 and the second elastic element 35 are both telescopic springs. The top of the sealing seat 323 is provided with an annular limiting groove. The second elastic element 35 is sleeved on the drive tube 321 and its bottom end is embedded in the limiting groove. The bottom end of the compression seat 322 is also provided with a sleeve part 3224. The first elastic element 34 is sleeved on the sleeve part 3224 and its two ends abut against the inner wall of the main seat body 3221 and the pump outer tube 31, respectively.

[0077] In this embodiment, the synergistic effect of the telescopic spring and the structural limit ensures the assembly stability of the telescopic spring and the precise movement of each component during the pumping process, thereby improving the efficiency and stability of the pumping process.

[0078] Understandably, the wire diameter of the first telescopic spring should be relatively large so that when the first telescopic spring is against the inner wall of the outer tube 31 of the pressure pump, its edge can be exposed relative to the ball groove 313 below, so as to form a block above the ball groove 313, so that the sealing ball 33 can only move within the setting depth L1 of the ball groove 313, and avoid the sealing ball 33 from shifting after being sucked up and being unable to return to the sealing position.

[0079] In some embodiments, a liquid collection groove 122 is formed in the bottom recess of the liquid storage cavity 11, such as... Figure 1 As shown, the bottom end of the pump external pipe 31 extends below the surface of the liquid collection tank 122.

[0080] In this embodiment, the collection tank 122 can effectively collect residual flavor liquid. Since the bottom end of the pump outer pipe 31 extends below the surface of the collection tank 122, the residual flavor liquid can be fully absorbed, avoiding waste. Typically, the collection tank 122 is positioned directly opposite the inlet 311 at the bottom end of the pump outer pipe 31, and its diameter is slightly larger than the bottom end of the pump outer pipe 31. Preferably, the distance between the bottom end of the pump outer pipe 31 and the bottom of the collection tank 122 is between 0.1 and 3 mm, specifically selected based on the depth of the collection tank 122.

[0081] See Figure 1 and Figure 8As shown, in some embodiments, the injection device 100 further includes a button 40, which is disposed in the first mounting cavity 131 and is used to drive the drive tube 321 to slide toward the inlet hole 311. The button 40 includes a pump connection 41 and a second tube connection 42 disposed at the bottom end. The pump connection 41 and the second tube connection 42 are connected through a flow channel. The pump connection 41 is sleeved on the top end of the drive tube 321. The second tube connection 42 is connected to the first tube connection 222 through a hose 50.

[0082] In this embodiment, the pumping operation is performed manually by setting a button 40. The pump connector 41 at the bottom of the button 40 is tightly fitted to the top of the drive tube 321, so that when the user presses the button 40, it actuates the drive tube 321 to realize the pumping function. Furthermore, the second tube connector 42 of the button 40 is connected to the pump connector 41 through a flow channel, and the second tube connector 42 is connected to the first tube connector 222 through a flexible hose 50, thus completely constructing a communication channel between the pumping assembly 30 and the receiving assembly 20. The flexible hose 50 facilitates assembly and prevents leakage caused by squeezing and detachment during pressing.

[0083] In a further detailed installation structure of the button 40, the button 40 is positioned adjacent to the receiving component 20, ensuring a compact structure while facilitating user operation. The support 22 has a button limiting groove 224 extending downwards on its side near the button 40, and the button 40 has a locking protrusion 43 that matches the button 40 groove. The button 40 is enclosed and confined within the first mounting cavity 131 by the support 22 and the oil reservoir cover 13, and one side of the button 40 is engaged within the button limiting groove 224 via the locking protrusion 43. Therefore, the assembly process of the button 40 can be as follows: First, the button 40 is placed into the first mounting cavity 131, and then the support 22 is installed. When the support 22 is installed, the button limiting groove 224 and the locking protrusion 43 are precisely aligned. While the support 22 is fixed, the support 22 and the oil tank cover 13 cooperate to form a semi-closed cavity, which restricts the movement of the button 40 in the X and Y axis directions. The button 40 can be limited, and based on the cooperation between the limiting groove and the locking protrusion 43, on the one hand, the button 40 is prevented from moving upward and leaving the first mounting cavity 131, and on the other hand, the downward pressing or return action of the button 40 is limited and guided, ensuring that the button 40 is stable and reliable during operation.

[0084] With button 40 installed, the pumping process can be fully realized based on the device structure. (See also...) Figure 12The diagram shows the structure of the injection device 100 in its initial state. In this state, the components inside the pump outer pipe 31 are balanced under the action of the elastic element. The limiting ring 324 on the drive pipe 321 presses against the upper pipe cap 36. The sealing seat 323 and the compression seat 322 are sealed to block the flow channel, and the sealing seat 323 simultaneously seals the air inlet 315. In the pressed state, the sealing seat 323 and the compression seat 322 are unsealed, and the flow channel is opened to form a continuous pump. The pumping route of the liquid channel and the pumping liquid channel is shown in the figure. During the pressing process of the lower compression seat 322, the flavor liquid in the transfer chamber 312 is pumped out from the pumping liquid channel; (c) is a schematic diagram of the structure of the injection device 100 in the second pressing state. At this time, the compression seat 322 is driven to the bottom, the sealing seat 323 and the compression seat 322 are resealed, and the air replenishment hole 315 is opened, so that air is replenished to the liquid storage chamber 11 according to the air replenishment route shown in the figure. During the return process of the piston in this state, the flavor liquid can be drawn from the liquid storage chamber 11 to the transfer chamber 312.

[0085] It is understood that the above-described method of driving the pump assembly 30 via button 40 is only one embodiment of the technical solution in this application. In some other embodiments, an electric drive method can also be used when a button 40 structure is provided. For example... Figure 13 As shown, exemplarily, the device also includes a sensor 310, a controller (not shown), a power supply 320, and a power transmission assembly 340 for a micro motor 330, all mounted on the oil tank cover 13. The controller is connected to the sensor 310, the power supply 320, and the micro motor 330, respectively. The output of the micro motor 330 is connected to the drive tube 321 in the pumping assembly 30 via the power transmission assembly 340. The sensor 310 is further mounted on the receiving assembly 20, such as on the side or bottom wall of the support 22. When an aerosol substrate 200 is inserted, the sensor 310 detects its presence. Upon receiving the signal, the controller activates the micro motor 330, which then drives the pumping assembly 30 via the power transmission assembly 340, achieving automatic pumping. This electric drive method improves operational convenience while ensuring accurate and efficient pumping.

[0086] The sensors 310 include pressure sensors 310, strain gauge sensors 310, microswitches, infrared sensors 310, and ultrasonic sensors 310. The various types of sensors 310 allow for flexible selection based on actual needs, ensuring accurate detection of the aerosol matrix 200. The controller features optimized built-in algorithms for rapid response, a highly efficient and low-power micro-motor 330, and a precisely designed power transmission component 340, ensuring stable and reliable pumping processes.

[0087] Option 2 See Figure 14 As shown, as a simplified version of Scheme 1, the housing assembly 10 of the injection device in Scheme 2 includes a receiving shell 110, a pump assembly 30, a button 40, and an injection needle 21. A liquid storage chamber 11 is formed inside the receiving shell 110. The pump assembly 30 is the same as the pump assembly in Scheme 1 and is fixed to the receiving shell 110. The bottom end of the pump outer tube also extends into the liquid storage chamber 11, and the top end of the drive tube is exposed outside the receiving shell 110. The button 40 is then set on the receiving shell, covering the pump assembly 30, and is movable between the button 40 and the receiving shell 110. The receiving shell 110 can guide the up and down movement of the button 40. The pump connection in the button 40 is also connected to the top end of the drive tube. However, unlike the structural arrangement of Scheme 1, the injection needle 21 is directly fixed to the button 40, centrally located at the top end of the button 40, and the injection needle 21 is directly connected to the pump connection.

[0088] In this way, the user aligns the aerosol substrate 200 with the injection needle 21, so that the injection needle 21 is directly inserted into the aerosol substrate 200. After the aerosol substrate 200 is inserted, the user presses the button 40. The aerosol substrate 200 moves with the injection needle. At the same time, the button 40 drives the pump assembly 30 to pump the flavor liquid in the storage chamber 11 into the aerosol substrate 200.

[0089] Option 3 See Figure 15 As shown, this solution provides another liquid injection device, whose housing assembly 10 includes a receiving shell 110, with an injection needle 21 fixed to the top of the receiving shell 110. The pump assembly includes a push block 420, a push rod 430, and a threaded sleeve 410. The bottom of the receiving shell 110 is open-ended. The push block 420 is inserted into the receiving shell 110 from the bottom, with its periphery tightly against the inner wall of the receiving shell 110. The space between the top of the push block 420 and the receiving shell 110 is the liquid storage chamber 11, which stores the flavor liquid. The injection needle 21 at the top communicates with the liquid storage chamber 11. The threaded sleeve 410 is fitted onto the outside of the bottom of the receiving shell 110, and the receiving shell 110 provides a limit on the threaded sleeve 410 in the Z-axis direction to prevent it from falling off. The push block 420 is connected to the push rod 430 and is threadedly connected to the threaded sleeve 410 via the push rod 430.

[0090] Furthermore, by rotating the threaded sleeve 410, the push block 420 can be gradually pushed upwards, thereby compressing the space in the liquid storage chamber 11, and thus allowing the liquid to be pumped out from the injection needle 21. With this structural configuration, the pumping volume can be precisely controlled by setting the rotation angle of the threaded sleeve and the displacement of the push block accordingly.

Claims

1. A liquid injection device, characterized in that, include: The housing assembly has a reservoir for storing the flavor liquid; A receiving component is disposed on the housing assembly. The receiving component includes a support and an injection needle disposed on the support. The injection needle does not protrude from the support. The support is used to receive an aerosol matrix. When at least a portion of the aerosol matrix is ​​placed into the support, the injection needle is inserted into the aerosol matrix and extends to 1 / 4 to 3 / 4 of the aerosol matrix. The diameter of the injection needle is 0.1 to 5 mm. A pump assembly, connected to the housing assembly, is used to pump the flavor liquid in the storage chamber into the aerosol matrix through the injection needle.

2. The liquid injection device according to claim 1, characterized in that, The aerosol matrix includes an aerosol generation section and an aerosol filtration section connected to the aerosol generation section, and the injection needle is inserted to 1 / 4 to 3 / 4 of the position of the aerosol filtration section.

3. The liquid injection device according to claim 2, characterized in that, The support is provided with a cavity, and the aerosol filter section is at least partially inserted into the cavity so that the injection needle is inserted into the aerosol filter section along the center position of the aerosol filter section.

4. The liquid injection device according to claim 3, characterized in that, The receiving component further includes an adjustment block that matches the shape of the cavity. The adjustment block is disposed between the aerosol substrate and the inner wall of the cavity. The adjustment block is used to adjust the tightness of the fit between the aerosol substrate and the inner wall of the cavity. The bottom end of the adjustment block is provided with a mesh hole, and the bottom end of the cavity is provided with a liquid suction element.

5. The liquid injection device according to claim 4, characterized in that, The receiving component is provided with a snap-fit ​​structure, and the adjusting block is snapped into the cavity through the snap-fit ​​structure; a chamber is formed inside the adjusting block, one end of the chamber is provided with an insertion hole for inserting the aerosol matrix, and the other end is provided with a needle hole for the injection needle to pass through, and the insertion hole and the needle hole are coaxially arranged.

6. The liquid injection device according to claim 5, characterized in that, The snap-fit ​​structure includes a first limiting step formed at the top edge of the cavity and a blocking block protruding from the inner wall of the cavity; the snap-fit ​​structure also includes a second limiting step matching the first limiting step at the top of the adjusting block, and a snap bone protruding from the outer wall of the adjusting block, with a clearance groove formed between the head and tail ends of the snap bone, and the tail end of the snap bone bent towards the insertion hole to form a limiting claw; wherein, the adjusting block is installed in the cavity, the second limiting step abuts against the first limiting step, and the blocking block enters between the snap bone and the second limiting step through the clearance groove and can be limited and stopped by the limiting claw.

7. The liquid injection device according to any one of claims 1-6, characterized in that, The housing assembly includes: Oil tank shell, which has liquid storage space; An oil tank cover is installed on the top of the oil tank shell, forming the liquid storage cavity together with the oil tank shell; a first mounting cavity and a second mounting cavity are formed on the oil tank cover, the first mounting cavity is connected to the top of the oil tank cover, the second mounting cavity is connected to the liquid storage cavity, and the top of the second mounting cavity is provided with a first through hole that communicates with the first mounting cavity; The receiving component is disposed in the first mounting cavity, the pumping component is disposed in the second mounting cavity, and the pumping component is connected to the injection needle through the first through hole.

8. The liquid injection device according to claim 7, characterized in that, The pump assembly includes: The pump outer tube has its top end snapped into the second mounting cavity and its bottom end extending toward the bottom of the liquid storage cavity; the bottom end of the pump outer tube has a liquid inlet hole and the top end has a second through hole that matches the first through hole. A piston is movably disposed in the outer tube of the pump. The piston has a liquid outlet channel connected to the injection needle. The piston and the outer tube of the pump together form a transfer chamber for transferring flavor liquid. A sealing ball is disposed at the liquid inlet hole; The piston reciprocates within the pump's outer tube to squeeze the flavor liquid in the transfer chamber out of the outlet channel when the piston moves toward the inlet port; and when the piston moves away from the inlet port, a negative pressure is formed in the transfer chamber, and the sealing ball opens the inlet port to draw flavor liquid from the storage chamber into the transfer chamber.

9. The liquid injection device according to claim 8, characterized in that, The piston component includes: A drive tube is movably disposed inside the external tube of the pump, and the top end of the drive tube is connected to the injection needle; A compression seat is connected to the bottom end of the drive tube to move with the drive tube, and a flow guide channel is provided between the compression seat and the drive tube; A sealing seat is movably configured corresponding to the compression seat, used to block or open the flow channel; When the piston moves toward the liquid inlet, the sealing seat opens the flow channel to connect the drive tube and the transfer chamber to form the liquid outlet channel; and when the piston moves away from the liquid inlet, the sealing seat blocks the flow channel, and the sealing seat moves synchronously with the compression seat.

10. The liquid injection device according to claim 9, characterized in that, A first elastic element abuts between the bottom end of the compression seat and the inner wall of the pump outer pipe. The sealing seat is sleeved on the drive pipe. A limiting ring is formed on the outer side wall of the drive pipe near its top end. A second elastic element abuts between the top end of the sealing seat and the limiting ring. Wherein, when the drive tube is not driven, the top end of the limiting ring abuts against the upper end of the pump outer tube; and a third limiting step is provided inside the pump outer tube, the third limiting step being used to limit the movement of the compression seat toward the liquid inlet side.

11. The liquid injection device according to claim 10, characterized in that, An air inlet is provided on the side wall of the pump's outer pipe. The air inlet is positioned higher than the liquid level of the flavor liquid in the storage chamber. When the sealing seat is not driven, it blocks the air inlet. When the sealing seat is driven, it can unseal the air inlet, allowing the storage chamber to exchange air with the outside through the air inlet.

12. The liquid injection device according to claim 10, characterized in that, The compression seat includes: The main body is shaped to match the shape of the inner cavity of the pump outer pipe, and the top end of the main body and the bottom end of the drive pipe are spaced apart. A protruding rib is connected to the main body and extends into the drive tube. The protruding rib and the drive tube are in a transition fit, and multiple guide grooves are spaced apart along the length direction on the periphery of the protruding rib. When the main body disengages from the sealing seat, the flow channel is opened; when the main body makes contact with the sealing seat, the flow channel is blocked.

13. The liquid injection device according to claim 9, characterized in that, It also includes a button, which is disposed in the first mounting cavity and is used to drive the drive tube to slide toward the liquid inlet. The button is provided with a pump connection and a second pipe connection. The pump connection and the second pipe connection are in a communication state. The pump connection is sleeved on the top end of the drive tube, and the second pipe connection is connected to the injection needle through a hose.

14. The liquid injection device according to claim 7, characterized in that, The housing assembly also includes: The lower cover is fitted onto the oil tank shell; The upper cover is hinged to the short side of the lower cover; and, A flexible pressure-resistant structure is provided between the upper cover and the oil tank cover, which is used to keep the upper cover in an open or closed state.

15. The liquid injection device according to claim 14, characterized in that, The flexible pressure-resistant structure includes: A spring clip, the spring clip being connected to the oil tank cover; The abutment block has one end rotatably mounted on the oil tank cover and the other end is a free end. The abutment block has a first pressing point and a second pressing point on both sides of its rotation center, which are respectively in contact with the spring sheet. The upper cover has an internal pressure plate that is opposite to the side wall of the hinge side. When the spring piece presses against the first pressure point, the free end of the abutment block presses against the pressure plate to keep the upper cover closed. When the spring piece presses against the second pressure point, the free end of the abutment block presses against the side wall of the upper cover near the hinge side to keep the upper cover open.

Images