A spray device and actuation method thereof

Abstract

The present invention discloses a spray device, comprising an upper shell, an inner cylinder, a container frame, and a transmission mechanism. The upper shell is provided with a spray mechanism; the inner cylinder is slidably disposed within the upper shell along the axial direction of the device; the container frame is slidably disposed within the inner cylinder along the axial direction of the device, and the container frame is used to mount a liquid storage container; the transmission mechanism is respectively connected to the inner cylinder and the container frame, and is used to drive the two to move synchronously in opposite directions; wherein, upward movement of the inner cylinder can cause the transmission mechanism to drive the container frame downward, and the device is in a first state; downward movement of the inner cylinder can cause the transmission mechanism to drive the container frame upward, and the device is in a second state. The transmission mechanism changes the two-handed rotation actuation to a single-handed press actuation, making the operation quick and convenient, and convenient for patients to use, and the device's actuation method is compatible with all types of people.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and in particular to a spray device and an actuation method thereof. Background Art

[0002] Spray devices for pulmonary inhalation mainly convert liquid preparations such as drugs, nutrients or nicotine liquids into tiny particles that can be inhaled into the human body through breathing, thereby achieving the purpose of painless, rapid and effective treatment.

[0003] When using existing nebulizers, patients hold the upper housing with one hand and rotate the rotating element with the other to activate the nebulizer and release the spray. Because this requires two hands to operate, the nebulizer is relatively cumbersome and inconvenient to operate, especially for people with hand disabilities, and its activation mechanism is not rational.

[0004] Based on the above problems, the applicant proposed a spray device that can be activated by pressing with one hand, which is more convenient to operate and compatible with all kinds of groups of people. Summary of the Invention

[0005] The object of the present invention is to provide a spray device and an actuation method thereof, which facilitates operation and use by patients by changing the two-handed rotation actuation to a single-handed pressing actuation.

[0006] The purpose of the present invention is achieved by the following technical solutions:

[0007] A spray device, comprising:

[0008] an upper shell, wherein a spray mechanism is provided in the upper shell;

[0009] An inner cylinder is slidably arranged in the upper shell along the axial direction of the device;

[0010] A container rack is slidably arranged in the inner cylinder along the axial direction of the device, and is used to install a liquid storage container;

[0011] A transmission mechanism, connected to the inner cylinder and the container frame, respectively, for driving the two to move synchronously in opposite directions;

[0012] The upward movement of the inner cylinder can prompt the transmission mechanism to drive the container rack to move downward, and the device is in a first state; the downward movement of the inner cylinder can prompt the transmission mechanism to drive the container rack to move upward, and the device is in a second state.

[0013] In some embodiments, the transmission mechanism includes:

[0014] a first rack portion, arranged on the top of the inner cylinder along the axial direction of the device;

[0015] a second rack portion, arranged on the top of the container rack along the axial direction of the device;

[0016] A gear is rotatably disposed in the upper housing, and two sides of the gear are respectively engaged with the first rack portion and the second rack portion.

[0017] In some embodiments, the upper housing is provided with beams disposed on both sides of the gear;

[0018] The crossbeam is used to support the rotating shaft on which the gear is mounted, and is also used to guide the first rack portion and limit the maximum upward movement stroke of the inner cylinder, thereby controlling the ejection volume of the device.

[0019] In some embodiments, a first guide unit is provided between the upper shell and the inner cylinder, and a second guide unit is provided between the inner cylinder and the container rack.

[0020] In some embodiments, a spring is further included, and the spring is disposed on the inner side of the container rack to provide elastic force for resetting the container rack.

[0021] In some embodiments, a support seat is provided below the spring, and a plurality of avoidance openings are evenly spaced around the outer periphery of the inner cylinder;

[0022] Part of the support seat passes through the avoidance opening and is fixedly connected to the upper shell.

[0023] In some embodiments, the liquid storage container is made of a transparent material;

[0024] In the second state, the avoidance opening can be used to observe the remaining liquid in the liquid storage container.

[0025] In some embodiments, a lower shell is further included, which is arranged below the upper shell and is detachably fixedly connected to the inner cylinder.

[0026] In some embodiments, a plurality of protrusions are evenly distributed on the outer circumference of the bottom of the inner cylinder;

[0027] The protrusion is used to interfere with and fix with the inner wall of the lower shell, and is also used to abut against the lower end of the upper shell to limit the maximum upward movement of the inner cylinder, thereby controlling the spray volume of the device.

[0028] In some embodiments, a locking mechanism is provided between the inner cylinder and the container frame, and the locking mechanism comprises:

[0029] a first locking hook, arranged on the inner wall of the inner cylinder;

[0030] an elastic arm, arranged on the top of the container frame along the axial direction of the device, and provided with a second locking hook above and below the first locking hook;

[0031] An operating key is arranged on the side wall of the upper shell, and the operating key has a pressing shaft portion that contacts the elastic arm and an anti-slip portion that is buckled with the upper shell.

[0032] In some embodiments, an anti-accidental-touch member is provided between the operation key and the upper housing, and the anti-accidental-touch member is used to provide a force opposite to the pressing direction.

[0033] In some embodiments, the inner top of the upper shell is provided with a tubular cavity, and the spray mechanism includes:

[0034] a flow-guiding member, disposed in the lumen;

[0035] a liquid infusion tube, one end of which is disposed in the liquid storage container and the other end of which is disposed in the flow guide member, and the liquid infusion tube is fixedly connected to the container frame;

[0036] a sealing unit, disposed at the bottom of the flow-guiding member and configured to seal the liquid infusion tube extending into the flow-guiding member;

[0037] The atomizing unit is arranged on the top of the flow-guiding component and is used for converting the liquid into mist droplets and releasing them outwards.

[0038] In some embodiments, a plurality of fixed wings are evenly spaced around the outer periphery of the flow-guiding component, and a lap ring is provided above the fixed wings;

[0039] The flow-guiding member is inserted into the lumen from top to bottom until the lap ring abuts against the upper end of the lumen, and the fixing wings interfere and fix with the inner wall of the lumen.

[0040] In some embodiments, a nozzle is provided on the periphery of the atomization unit, air inlet holes are provided on both sides of the nozzle, and a plurality of ventilation grooves are evenly spaced on the inner wall of the nozzle.

[0041] A method for actuating a spray device comprises the following steps:

[0042] S1, upper shell of the one-handed grip device;

[0043] S2, the inner cylinder of the pressing device drives it to move upward to the first predetermined position, and the container rack is driven to move downward to the second predetermined position synchronously through the transmission mechanism, so that the device is in the first state;

[0044] S3. Release the pressure, so that the inner cylinder and the container frame of the device are reset to their initial positions, and the device quickly switches from the first state to the second state and releases the spray outward;

[0045] S4. Repeat steps S2 to S3, and the device realizes the continuous spraying function.

[0046] In some embodiments, in step S2, the pressing method is: pressing the inner cylinder with fingers or pressing the inner cylinder onto a table / wall.

[0047] In some embodiments, in step S3, after the pressing is released, the device can be temporarily maintained in the first state by the locking mechanism, and quickly switched to the second state after being unlocked.

[0048] Compared with the prior art, the beneficial effects of the present invention include at least: changing the two-handed rotation actuation to one-handed pressing actuation through the transmission mechanism, which is quick and easy to operate, convenient for patients to use, and the actuation mode of the device is compatible with all kinds of people. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 It is a perspective view of the spray device of the present invention.

[0050] Figure 2 It is a bottom view of the spray device of the present invention.

[0051] Figure 3 4 is a cross-sectional view of the spray device of the present invention taken along the AA direction in the first state.

[0052] Figure 4 4 is a cross-sectional view taken along the BB direction of the spray device of the present invention in the first state.

[0053] Figure 5 4 is a cross-sectional view taken along the AA direction of the spray device of the present invention in the second state.

[0054] Figure 6 4 is a cross-sectional view taken along the BB direction of the spray device of the present invention in the second state.

[0055] Figure 7 It is a structural schematic diagram of the transmission mechanism of the spray device of the present invention.

[0056] Figure 8 It is a structural schematic diagram of the locking mechanism of the spray device of the present invention.

[0057] Figure 9 It is a structural schematic diagram of the spray mechanism of the spray device of the present invention.

[0058] Figure 10 It is a schematic structural diagram of the first guide unit and the second guide unit of the spray device of the present invention.

[0059] In the figure: 1, upper shell; 101, tube cavity; 2, inner cylinder; 201, avoidance port; 202, protrusion 3, container frame; 4, transmission mechanism; 401, first rack portion; 402, second rack portion; 403, gear; 404, beam; 405, rotating shaft; 5, spray mechanism; 501, flow guide member; 5011, fixed wing; 5012, lap ring; 502, infusion tube; 503, sealing unit; 50 4. Atomization unit; 6. Spring; 7. Support seat; 8. Lower shell; 9. Locking mechanism; 901. First lock hook; 902. Elastic arm; 903. Second lock hook; 904. Operation key; 9041. Pressing shaft part; 9042. Anti-slip part; 10. Anti-accidental touch part; 11. First guide unit; 12. Second guide unit; 13. Liquid storage container; 14. Nozzle; 1401. Air inlet; 1402. Vent groove;. DETAILED DESCRIPTION

[0060] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concepts of the example embodiments to those skilled in the art. Identical reference numerals in the drawings represent identical or similar structures, and thus repeated descriptions thereof will be omitted.

[0061] The words expressing positions and directions described in the present invention are all explained with reference to the accompanying drawings as examples, but can be modified as needed, and all such modifications are within the scope of protection of the present invention.

[0062] See also Figures 1 to 10 As shown, the present invention discloses a spray device, which includes an upper shell 1, an inner cylinder 2, a container frame 3 and a transmission mechanism 4.

[0063] Among them, Figure 1 As shown, the upper housing 1 serves as the grip portion of the device and is generally cylindrical in shape, making it convenient for the patient to hold with one hand. In some embodiments, the surface of the upper housing 1 can be provided with special functional layers (not shown), such as an anti-slip layer, a waterproof layer, and a conductive layer, to meet additional requirements such as anti-slip, waterproof, and static conductive properties.

[0064] like Figures 3 to 6 As shown, a spray mechanism 5 is provided in the upper shell 1. When the device is activated, the spray mechanism 5 can release spray outwards to achieve the function of atomization treatment.

[0065] See also Figure 9As shown, in this application, the spray mechanism 5 includes a flow-guiding member 501, a liquid infusion tube 502, a sealing unit 503, and an atomizing unit 504. The flow-guiding member 501 is disposed within the tubular cavity 101 at the inner top of the upper housing 1. The flow-guiding member 501 has an elongated channel that, in conjunction with the upward and downward movement of the liquid infusion tube 502, creates positive / negative pressure. One end (the lower end) of the liquid infusion tube 502 pierces the liquid storage container 13 and contacts the liquid therein, while the other end (the upper end) extends into the flow-guiding member 501. A one-way valve is provided at this port to allow the liquid in the liquid storage container 13 to be drawn unidirectionally into the spray mechanism 5 and pumped outward. The sealing unit 503 is disposed at the bottom of the flow-guiding member 501 and is used to seal the liquid infusion tube 502 extending into the flow-guiding member 501, ensuring a sealed environment within the channel. The atomizing unit 504 is disposed at the top of the flow-guiding member 501 and is used to convert the liquid into mist droplets for external release.

[0066] Still like Figures 3 to 6 As shown, the inner cylinder 2 serves as the active component for actuating the device. It is slidably arranged in the upper shell 1 along the axial direction of the device. The device can be actuated by controlling the inner cylinder 2 to slide up and down.

[0067] In this application, the inner cylinder 2 has an exposed portion extending from the lower end of the upper housing 1. The patient can press this exposed portion with one hand to cause the inner cylinder 2 to slide upward. If downward sliding is required, it can be combined with an elastic return member, such as spring 6 (described in detail below). Of course, in other embodiments, a sliding key (not shown) connected to the inner cylinder 2 can also be provided on the upper housing 1. By moving the sliding key up and down with one hand, the device can also be actuated.

[0068] The container rack 3 serves as an actuated follower of the device and is slidably arranged in the inner cylinder 2 along the axial direction of the device. The container rack 3 is used to install the liquid storage container 13 and also to drive the infusion tube 502 to move synchronously.

[0069] In this application, the container holder 3 can be injection molded in the middle of the infusion tube 502, thereby achieving a fixed connection between the container holder 3 and the infusion tube 502. In addition, the container holder 3 has a snap-fit ​​portion that can be detachably fixed to the liquid storage container 13, making it convenient to replace a new liquid storage container 13 after medication is completed, thereby reducing treatment costs.

[0070] The transmission mechanism 4 is connected to the inner cylinder 2 and the container frame 3 respectively, and is used to drive the two to move synchronously in opposite directions.

[0071] See also Figure 7As shown, in the present application, the transmission mechanism 4 includes a first rack portion 401, a second rack portion 402 and a gear 403. The first rack portion 401 is arranged at the top of the inner cylinder 2 along the axial direction of the device, and the second rack portion 402 is arranged at the top of the container rack 3 along the axial direction of the device. The gear 403 is rotatably arranged in the upper shell 1, and its two sides are respectively engaged with the first rack portion 401 and the second rack portion 402. When the first rack portion 401 is driven upward by the inner cylinder 2, the gear 403 will drive the second rack portion 402 downward, thereby causing the container rack 3 to move downward; conversely, when the second rack portion 402 is driven upward by the container rack 3, the gear 403 will drive the first rack portion 401 downward, thereby causing the inner cylinder 2 to move downward.

[0072] Preferably, the transmission mechanisms 4 are two in number, arranged symmetrically about the infusion tube 502 to enhance actuation stability. Furthermore, the first rack portion 401 can be integrally formed with the inner cylinder 2, and the second rack portion 402 can be integrally formed with the container holder 3. It is worth noting that the second rack portions 402 of the two transmission mechanisms 4 can be combined into one, with a hole reserved in the center for the infusion tube 502 to pass through. This further enhances the coupling strength between the infusion tube 502 and the container holder 3 and eliminates the problem of deformation of an excessively long infusion tube 502 during long-term use.

[0073] The actuating principle of the spray device of the present application is as follows: pressing the inner cylinder 2 with one hand drives it to move upward to the first predetermined position, and at the same time, the container rack 3 is driven to move downward to the second predetermined position through the transmission mechanism 4. During this period, negative pressure is formed in the spray mechanism 5 (the channel of the guide component 501), and the liquid in the liquid storage container 13 is sucked into the spray mechanism 5. At this time, the device is in the first state, that is, the liquid absorption state; after the pressing is released, the container rack 3 moves upward and returns to the initial position under the action of elastic force, and at the same time, the inner cylinder 2 is driven to move downward and return to the initial position through the transmission mechanism 4. During this period, high pressure is formed in the spray mechanism 5 (the channel of the guide component 501), and the liquid in the spray mechanism 5 is pumped out. At this time, the device is in the second state, that is, the liquid spraying state.

[0074] Compared with the actuation mode of the existing spray device, the spray device changes the two-handed rotation actuation to a single-handed pressing actuation through the transmission mechanism 4, which is quick and easy to operate and convenient for patients to use. The actuation mode of the device is compatible with all kinds of people.

[0075] See also Figure 3 、 Figure 5 and Figure 7 As shown, in some embodiments, a crossbeam 404 is provided in the upper shell 1 and is disposed on both sides of the gear 403, wherein an axis groove is provided on the crossbeam 404 for supporting a rotating shaft 405 for installing the gear 403, so that the gear 403 is rotatably installed in the upper shell 1.

[0076] Furthermore, the crossbeam 404 is also used to guide the first rack portion 401 and limit the maximum upward movement of the inner cylinder 2. Specifically, the spacing between the two crossbeams 404 is equal to the width of the first rack portion 401, so that both sides of the first rack portion 401 are always constrained by the crossbeams 404 in the sliding direction, thereby improving its stability during the transmission process. In addition, when the inner cylinder 2 moves up to the highest point, the lower end of the crossbeam 404 can contact the upper end of the inner cylinder 2, preventing the infusion tube 502 or the atomization unit 504 from being damaged by the impact due to excessive upward movement, thus playing a primary limiting role and limiting the spray volume of the device, so that the atomization dose remains consistent each time.

[0077] The beam is fully conducive to its own layout design in a limited space, achieving the effect of multiple uses, effectively simplifying the device structure and reducing space occupancy.

[0078] See also Figures 3 to 6 As shown, the spray device also includes a spring 6, which is disposed inside the container frame 3 and provides elastic force to reset the container frame 3. Simply put, when the patient presses the inner cylinder 2 upward, the container frame 3 moves downward, placing the device in the first state, while the spring 6 compresses and accumulates force. When the patient releases the pressure, the spring 6 forces the container frame 3 upward, placing the device in the second state, while the inner cylinder 2 moves downward, returning the device to its initial state.

[0079] Combine Figure 7 As shown, in some embodiments, a support seat 7 is provided below the spring 6, and the support seat 7 is also located in the inner cylinder 2, and a plurality of avoidance openings 201 are evenly spaced on the outer periphery of the inner cylinder 2. Part of the support seat 7 passes through the avoidance opening 201 and is fixedly connected to the upper shell 1, avoiding the impact of the sliding of the inner cylinder 2 while completing the installation.

[0080] Furthermore, the escape port 201 is located on the exposed portion of the inner cylinder 2, and is also used to observe the remaining liquid in the liquid storage container 13. Figure 1 and Figure 3 As shown, in the second state (initial state), the avoidance opening 201 is equivalent to a window, and the patient can observe the liquid storage container 13 through the avoidance opening 201. In this application, the liquid storage container 13 is made of a transparent material, for example, it can be a transparent, non-toxic plastic material such as TPE, PVC, PP, etc.

[0081] The avoidance opening 201 not only avoids the position but also serves as a window. In a limited space, it is fully beneficial to its own layout design, and also achieves the effect of multiple uses, and effectively reduces the adverse effects on the strength of the inner cylinder 2.

[0082] See also Figures 1 to 6As shown, in some embodiments, the spray device further includes a lower shell 8, which is disposed below the upper shell 1 and is detachably fixedly connected to the inner cylinder 2. In the present application, the lower shell 8 can protect the liquid storage container 13 to prevent it from being contaminated or damaged; on the other hand, the lower shell 8 transfers the pressing force application portion from the inner cylinder 2 to itself, thereby increasing the pressure area and making operation more convenient. In the first state of the device, the distance between the upper shell 1 and the lower shell 8 is approximately 8mm-12mm, and in the second state of the device, the upper shell 1 and the lower shell 8 are in contact with each other.

[0083] Specifically, a plurality of protrusions 202 are evenly distributed around the outer periphery of the bottom of the inner cylinder 2. The protrusions 202 are used to interfere with and fix with the inner wall of the lower shell 8, thereby achieving a detachable fixed connection between the lower shell 8 and the inner cylinder 2, making it convenient for the patient to replace a new liquid storage container 13. In addition, the protrusions 202 are also used to limit the maximum upward movement of the inner cylinder 2. Specifically, the protrusions 202 are between the inner diameter and the outer diameter of the inner cylinder 2. When the inner cylinder 2 moves upward to the highest point, the protrusions 202 can contact the lower end of the outer shell, preventing the infusion tube 502 or the atomization unit 504 from being damaged by the impact due to excessive upward movement. This serves as a secondary limiter and simultaneously limits the spray volume of the device, so that the atomized dose remains consistent each time.

[0084] It should be noted that the crossbeam 404 and the protrusion 202 can limit the maximum upward movement of the inner cylinder 2 independently, or can be combined to jointly limit the maximum upward movement of the inner cylinder 2.

[0085] See also Figure 3 、 Figure 5 and 8 As shown, in some embodiments, a locking mechanism 9 is provided between the inner cylinder 2 and the container frame 3. The locking mechanism 9 is used to lock the device in a first state and enter a second state instantly after being unlocked, thereby facilitating patient operation.

[0086] In the present application, the locking mechanism 9 includes a first lock hook 901, an elastic arm 902, a second lock hook 903 and an operating key 904. The first lock hook 901 is arranged on the inner wall of the inner cylinder 2, the elastic arm 902 is arranged on the top of the container frame 3 along the axial direction of the device, the elastic arm 902 is provided with a second lock hook 903 opposite to the first lock hook 901, and the operating key 904 is arranged on the side wall of the upper shell 1. The operating key 904 has a pressing shaft portion 9041 that contacts the elastic arm 902 and an anti-slip portion 9042 that is buckled with the upper shell 1. In the initial state, the first lock hook 901 is located below the second lock hook 903, and the pressing shaft portion 9041 of the operating key 904 is kept fixed by the elastic arm 902 and the anti-slip portion 9042. When the device enters the first state, the inner cylinder 2 drives the first lock hook 901 to jump over the second lock hook 903, and then engages and locks it with the spring 6; when the user touches the operation key 904, the elastic arm 902 is squeezed inward by the pressing shaft part 9041, causing the second lock hook 903 to separate from the first lock hook 901. Under the action of the spring 6, the container rack 3 drives the infusion tube 502 to move up quickly, and the device enters the second state.

[0087] Furthermore, an anti-accidental touch member 10 is provided between the operation key 904 and the upper shell 1. In this application, due to the limited installation space, the anti-accidental touch member 10 can be a relatively small elastic member such as an elastic sheet or a disc spring. The anti-accidental touch member 10 is used to provide a force opposite to the pressing direction. Only after the patient overcomes the reaction force of the anti-accidental touch member 10 can the pressure shaft portion 9041 be driven toward the elastic arm 902 to avoid accidental spraying caused by accidental touch. On the other hand, the reaction force of the anti-accidental touch member 10 can also cause the anti-detachment portion 9042 to be tightly attached to the inner wall of the upper shell 1. This dual action further improves the stability of the operation key 904 and prevents the problem of the operation key 904 becoming loose due to the decrease in elasticity of the elastic arm 902.

[0088] See also Figure 10 As shown, in some embodiments, a first guide unit 11 is provided between the upper shell 1 and the inner cylinder 2 to guide the inner cylinder 2 and improve its sliding stability. In the present application, the first guide unit 11 includes a guide groove and a slider, which slide together. The guide groove is provided on the inner wall of the upper shell 1, and the slider is provided on the outer periphery of the inner cylinder 2; alternatively, the guide groove is provided on the outer periphery of the inner cylinder 2, and the slider is provided on the inner wall of the upper shell 1.

[0089] Similarly, a second guide unit 12 is provided between the inner cylinder 2 and the container rack 3 to guide the container rack 3 and improve its sliding stability. The structure of the second guide unit 12 is similar to that of the first guide unit 11 and will not be repeated here.

[0090] See also Figure 9As shown, in some embodiments, a plurality of fixed wings 5011 are evenly spaced at intervals on the outer periphery of the flow-guiding member 501, and a lap ring 5012 is provided above the fixed wings 5011. During installation, the flow-guiding member 501 is inserted into the tubular cavity 101 from top to bottom until the lap ring 5012 abuts against the upper end of the tubular cavity 101. In the present application, there are four fixed wings 5011, and the fixed wings 5011 can form a line interference with the inner wall of the tubular cavity 101. Compared with conventional surface interference fixation, it can effectively reduce assembly resistance and ensure the force balance of the flow-guiding member 501. The lap ring 5012 is used to limit the insertion depth of the flow-guiding member 501 and has an anti-falling effect, so that the sealing environment formed by the channel of the flow-guiding structure and the infusion tube 502 is not affected, thereby realizing a precise quantitative spray function.

[0091] See also Figure 4 and Figure 6 As shown, in some embodiments, a nozzle 14 is provided on the periphery of the atomizing unit 504, and air inlet holes 1401 are provided on both sides of the nozzle 14. The air inhaled from the air inlet holes 1401 can come into contact with the mist droplets released by the atomizing unit 504, while further breaking up the mist droplets and providing a certain auxiliary power, thereby improving the depth of spray delivery.

[0092] In addition, a plurality of ventilation grooves 1402 are evenly spaced on the inner wall of the nozzle 14, which allows the air inhaled from the air inlet 1401 to flow smoothly to the atomization unit 504, avoiding the air path blockage caused by tolerance problems during the assembly of the atomization unit 504 and the nozzle 14, and ensuring that the air path from the air inlet 1401 to the nozzle of the atomization unit 504 is unobstructed.

[0093] The present invention also discloses a method for actuating a spray device, comprising steps S1 to S4, wherein:

[0094] S1, upper shell 1 of the one-hand holding device;

[0095] S2, the inner cylinder 2 of the pressing device drives it to move upward to the first predetermined position, and the container rack 3 is driven to move downward to the second predetermined position synchronously through the transmission mechanism 4, so that the device is in the first state;

[0096] S3, cancel the pressing, so that the inner cylinder 2 and the container frame 3 of the device are respectively reset to the initial position, and the device quickly switches from the first state to the second state and releases the spray outward;

[0097] S4. Repeat steps S2 to S3, and the device realizes the continuous spraying function.

[0098] In some embodiments, in step S2 , the pressing method is: pressing the inner cylinder 2 with a finger or pressing the inner cylinder 2 onto a table or wall, thereby achieving a single-handed quick actuation function.

[0099] In some embodiments, in step S3, after the pressing is canceled, the device can be temporarily maintained in the first state through the locking mechanism 9, and quickly switched to the second state after unlocking. By adding a temporary locking function, the patient can independently choose the spraying time after the device completes the liquid aspiration, which further facilitates the patient's use.

[0100] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limiting the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the invention without departing from the principles and purpose of the present invention. All such changes shall fall within the scope of protection of the claims of the present invention.

Claims

1. A spray device, characterized in that: include: An upper shell (1), wherein a spray mechanism (5) is provided in the upper shell (1); An inner cylinder (2) is slidably arranged in the upper shell (1) along the axial direction of the device; A container rack (3) is slidably arranged in the inner cylinder (2) along the axial direction of the device, and the container rack (3) is used to install a liquid storage container (13); A transmission mechanism (4) is connected to the inner cylinder (2) and the container frame (3) respectively, and is used to drive the two to move synchronously in opposite directions; The spray mechanism (5) comprises a flow-guiding member (501) arranged in the upper housing (1), a liquid infusion tube (502) arranged in a channel of the flow-guiding member (501), and an atomizing unit (504) arranged on the top of the flow-guiding member (501); a one-way valve is built into the upper end of the liquid infusion tube (502) and can slide up and down along the channel to form positive pressure / negative pressure, thereby atomizing the liquid in the liquid storage container (13) through the atomizing unit (504) and releasing it outward; The upward movement of the inner cylinder (2) can prompt the transmission mechanism (4) to drive the container rack (3) to move downward, and the device is in a first state; the downward movement of the inner cylinder (2) can prompt the transmission mechanism (4) to drive the container rack (3) to move upward, and the device is in a second state.

2. The spray device according to claim 1, characterized in that The transmission mechanism (4) comprises: A first rack portion (401) is arranged at the top of the inner cylinder (2) along the axial direction of the device; A second rack portion (402) is arranged on the top of the container rack (3) along the axial direction of the device; A gear (403) is rotatably disposed in the upper housing (1), and two sides of the gear (403) are respectively engaged with the first rack portion (401) and the second rack portion (402).

3. The spray device according to claim 2, characterized in that The upper housing (1) is provided with crossbeams (404) disposed on both sides of the gear (403); The crossbeam (404) is used to support the rotating shaft (405) on which the gear (403) is mounted, and is also used to guide the first rack portion (401) and limit the maximum upward travel of the inner cylinder (2), thereby controlling the ejection volume of the device.

4. The spray device according to claim 1, characterized in that A first guide unit (11) is provided between the upper shell (1) and the inner cylinder (2), and a second guide unit (12) is provided between the inner cylinder (2) and the container rack (3).

5. The spray device according to claim 1, characterized in that It also includes a spring (6), which is arranged on the inner side of the container rack (3) and is used to provide elastic force for resetting the container rack (3).

6. The spray device according to claim 5, characterized in that A support seat (7) is provided below the spring (6), and a plurality of avoidance openings (201) are evenly spaced on the outer circumference of the inner cylinder (2); Part of the support seat (7) passes through the avoidance opening (201) and is fixedly connected to the upper shell (1).

7. The spray device according to claim 6, characterized in that The liquid storage container is made of transparent material; In the second state, the avoidance opening (201) can be used to observe the remaining liquid in the liquid storage container.

8. The spray device according to claim 1, characterized in that It also includes a lower shell (8), which is arranged below the upper shell (1) and is detachably fixedly connected to the inner cylinder (2).

9. The spray device according to claim 8, characterized in that The outer periphery of the bottom of the inner cylinder (2) is evenly distributed with a plurality of protrusions (202); The protrusion (202) is used to interfere with and fix with the inner wall of the lower shell (8), and is also used to abut against the lower end of the upper shell (1) to limit the maximum upward movement of the inner cylinder (2), thereby controlling the ejection volume of the device.

10. The spray device according to claim 5, characterized in that A locking mechanism (9) is provided between the inner cylinder (2) and the container frame (3), and the locking mechanism (9) comprises: A first locking hook (901) is provided on the inner wall of the inner cylinder (2); An elastic arm (902) is arranged at the top of the container frame (3) along the axial direction of the device, and a second locking hook (903) is provided on the elastic arm (902) and is opposite to the first locking hook (901) in the upper and lower directions; An operating key (904) is provided on a side wall of the upper shell (1), and the operating key (904) comprises a pressing shaft portion (9041) that contacts the elastic arm (902) and an anti-slip portion (9042) that is buckled with the upper shell (1).

11. The spray device according to claim 10, characterized in that An anti-mistaken-touch component (10) is provided between the operation key (904) and the upper housing (1), and the anti-mistaken-touch component (10) is used to provide an action force opposite to the pressing direction.

12. A spray device according to claim 1, characterized in that The actuation method of the spray device comprises the following steps: S1, upper housing (1) of the one-handed holding device; S2, the inner cylinder (2) of the pressing device drives it to move upward to a first predetermined position, and the container rack (3) is driven to move downward to a second predetermined position synchronously through the transmission mechanism (4), so that the device is in the first state; S3, canceling the pressing, causing the inner cylinder (2) and the container frame (3) of the device to return to their initial positions, and the device quickly switches from the first state to the second state, and releases the spray outward; S4. Repeat steps S2 to S3, and the device realizes the continuous spraying function.

13. The spray device according to claim 12, characterized in that In step S2, the pressing method is: pressing the inner cylinder (2) with fingers or pressing the inner cylinder (2) onto a table / wall.

14. The spray device according to claim 12, characterized in that In step S3, after the pressing is canceled, the device can be temporarily maintained in the first state by the locking mechanism (9), and quickly switched to the second state after unlocking.

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