Elastic protection piece, nozzle assembly and atomizing device

Abstract

The present application relates to a kind of for elastic protection, nozzle assembly and atomizing device.In the present application, elastic protection has first through hole, first axial part and second axial part, first transition wall surface is provided at the junction of first through hole and first axial part, and, first empty area is formed between the extension of first transition wall surface and the hole wall surface of first through hole, when elastic protection is extruded, part of elastic protection can enter first empty area;Second transition wall surface is provided at the junction of first through hole and second axial part, and, second empty area is formed between the extension of second transition wall surface and the hole wall surface of first through hole.The present application can effectively avoid producing chippings at the injection port by setting first empty area at one end of elastic protection, to further finally avoid the influence on the atomizing effect of atomizing device.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to an elastic protective member, a nozzle assembly and an atomizing device. Background Art

[0002] A nebulizer is a medical product that allows patients to administer medications by inhalation and is currently widely used.

[0003] The patent with the publication number "CN108057150B" discloses a high-pressure liquid transmission device (atomizer). According to the disclosure of the patent, Figure 1 As shown, the nebulizer includes a container 204, an elastic ring 206, a nozzle 208 and a cover 210. The nozzle 208 is accommodated in the elastic ring 206. The combination of the nozzle 208 and the elastic ring is integrally arranged in the container 204. The container 204 has an outlet opening 2046. The nozzle 208 has a hole 2082. The liquid medicine can flow through the hole 2082 and be sprayed out from the outlet opening 2046. There is a gap between the nozzle 208 and the cover 210 in the flow direction of the fluid.

[0004] Due to the gap between the nozzle 208 and the cover 210, the nozzle 208 will move a small distance when the atomizer is working. The movement of the nozzle 208 causes the elastic ring 206 to deform, and the lower end surface of the elastic ring 206 is very likely to run out from between the lower end surface of the nozzle 208 and the upper end surface of the container 204. This will cause debris to be generated at the outlet opening 2046 of the container 204, thereby making the mist shape and angle produced by the atomizer unstable, for example, bifurcated or tilted, and the amount of residual liquid medicine increases, which ultimately affects the atomization effect. Summary of the Invention

[0005] Problems to be solved by the invention

[0006] When conventional atomizers are assembled and in operation, the nozzle's elastic protective member is easily squeezed and protrudes above the nozzle, forming a protrusion. When the nozzle sprays atomized liquid, the protrusion not only affects the atomization effect of the liquid, but also reacts to the impact of the atomized liquid to form debris, which can be inhaled along with the spray, affecting the user's health. Furthermore, the debris can easily enter the flow channel and become stuck there, affecting the nozzle's atomization effect. Furthermore, the presence of debris in the flow channel can impact the nozzle body, increasing the risk of nozzle breakage.

[0007] Solutions for solving problems

[0008] The present invention provides an elastic protective member, which comprises a first through hole, a first axial portion and a second axial portion.

[0009] A first transition wall is provided at the connection between the first through hole and the first axial portion.

[0010] Furthermore, a first clearance zone is formed between the first transition wall surface and an extension surface of the hole wall surface of the first through hole;

[0011] A second transition wall is provided at the connection between the first through hole and the second axial portion.

[0012] A second clearance zone is formed between the second transition wall surface and the extended surface of the hole wall surface of the first through hole.

[0013] When the elastic protection member is squeezed, a portion of the elastic protection member may enter the first escape zone and / or the second escape zone.

[0014] In at least one embodiment, the first transition wall includes a second wall, one side of the second wall is connected to the first through hole, and the other side is connected to the first axial portion, and the first air avoidance zone is formed between the second wall and the extension surface of the hole wall of the first through hole.

[0015] In at least one embodiment, the first transition wall includes a first wall and a second wall.

[0016] The first axial portion and the first wall are spaced apart from each other in the axial direction of the elastic protective member.

[0017] One end of the second wall surface is connected to the first axial portion, the other end of the second wall surface is connected to one end of the first wall surface, and the other end of the first wall surface is connected to the hole wall surface of the first through hole. The first wall surface, the second wall surface and the extended surface of the hole wall surface of the first through hole form the first air avoidance area.

[0018] In at least one embodiment, at least one wall is provided between the first wall and the second wall, and two ends of the wall are connected to the first wall and the second wall respectively.

[0019] In at least one embodiment, the first axial portion is an outwardly protruding support portion, an edge of the support portion is connected to the first transition wall surface, and an inner side of the first transition wall surface is connected to the first through hole.

[0020] In at least one embodiment, the first axial portion is a continuous protrusion.

[0021] In at least one embodiment, the first transition wall surface is a plane, a curved surface, a surface formed by combining two planes, a surface formed by combining two curved surfaces, or a surface formed by a plane and a curved surface.

[0022] The present invention also discloses a nozzle assembly comprising the elastic protective member described in any one of the above embodiments, wherein the nozzle assembly further comprises a nozzle cover and a nozzle body.

[0023] The nozzle cover has a spray port;

[0024] The nozzle body has a flow channel communicating with the injection port;

[0025] The nozzle body is inserted into the first through hole along the axial direction of the nozzle assembly.

[0026] When the nozzle body is displaced substantially along the axial direction and the elastic protection member is deformed, a portion of the elastic protection member enters the first escape zone and / or the second escape zone.

[0027] In at least one embodiment, the nozzle assembly further includes a first fixing member and a first elastic element.

[0028] The nozzle body, the first elastic element and the first fixing member are sequentially arranged in the axial direction, and the first elastic element abuts against the nozzle body and the first fixing member at both sides in the axial direction to limit the axial movement of the nozzle body.

[0029] In at least one embodiment, the first elastic element does not block any portion of the inlet of the flow channel.

[0030] In at least one embodiment, the first fixing member has a second through hole, and the second through hole is connected to the flow channel.

[0031] The nozzle assembly further includes a filter element, which is disposed in the second through hole and is used to filter liquid that is about to enter the flow channel.

[0032] In at least one embodiment, the nozzle assembly further includes a second elastic element, which is arranged between the nozzle cover and the nozzle body in the axial direction.

[0033] Furthermore, the second elastic element abuts against the nozzle body and the nozzle cover at both sides in the axial direction respectively.

[0034] In at least one embodiment, the nozzle assembly further includes a spray body, an upper cover, a first elastic seal, a lower cover, a second fixing member and a second elastic seal.

[0035] The upper cover is threadedly connected to one end of the spray body, the nozzle cover, the nozzle body, the elastic protective member and the first fixing member are all located between the upper cover and the spray body in the axial direction, the first elastic sealing member is disposed between the first fixing member and the spray body, and the first elastic sealing member is in a compressed state to apply an axial force to the upper cover;

[0036] The lower cover is threadedly connected to the other end of the injection body, the second fixing piece is arranged between the lower cover and the injection body in the axial direction, the second elastic seal is arranged between the second fixing piece and the injection body, and the second elastic seal is in a compressed state to apply an axial force to the lower cover.

[0037] In at least one embodiment, the nozzle cover is connected to the first fixing member by interference fit, the first fixing member is connected to the spray body by interference fit, and the second fixing member is connected to the spray body by interference fit.

[0038] In at least one embodiment, the first fixing member and the filter element are connected by interference fit.

[0039] The present invention also discloses an atomizing device, which includes the elastic protective member described in any one of the above embodiments.

[0040] The present invention also discloses an atomizing device, which includes the nozzle assembly described in any one of the above embodiments.

[0041] Effects of the Invention

[0042] 1. According to the elastic protective member of the present invention, by providing a first avoidance area on the elastic protective member to accommodate undesirable deformation of the elastic protective member when the nozzle assembly is in operation, it is possible to effectively prevent the elastic protective member from protruding from the upper end surface of the nozzle body due to deformation, thereby reducing the direct impact of the spray on the elastic protective member, so that the elastic protective member produces less or even no debris, which is conducive to ensuring the stability of the mist shape and angle and good atomization effect; accordingly, there will be less debris entering the flow channel of the nozzle body, avoiding blockage of the flow channel, effectively ensuring the spray effect of the nozzle body, and extending the service life of the nozzle body; at the same time, the reduction of debris will reduce the impact on the nozzle body, reduce the risk of the nozzle body breaking, and further increase the service life of the nozzle body.

[0043] 2. According to the nozzle assembly of the present invention, by providing the first elastic element, the proportion of effective particle size sprayed from the atomizing device can be increased, thereby improving the atomization effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 A structural schematic diagram of an existing nozzle assembly is shown.

[0045] Figure 2 FIG. 1 shows a structural exploded view of a nozzle assembly according to the present invention.

[0046] Figure 3 A partial cross-sectional view of an upper portion of a nozzle assembly according to the present invention is shown (the first elastic element is omitted).

[0047] Figure 4 A three-dimensional structural diagram of a nozzle cover according to the present invention is shown.

[0048] Figure 5 A three-dimensional structural diagram of a nozzle body according to the present invention is shown.

[0049] Figure 6 A three-dimensional structural diagram of an elastic protective member according to the present invention is shown.

[0050] Figure 7a Shown Figure 6 sectional view of .

[0051] Figure 7b A schematic structural diagram of the first air avoidance zone of the second form is shown.

[0052] Figure 7c A schematic structural diagram of the first air avoidance zone of the third form is shown.

[0053] Figure 7d A schematic structural diagram of the first air avoidance zone of the fourth form is shown.

[0054] Figure 7e A schematic structural diagram of the first air avoidance zone of the fifth form is shown.

[0055] Figure 7f A schematic structural diagram of the first air avoidance zone of the sixth form is shown.

[0056] Figure 7g A schematic diagram of a structure in which the second air avoidance zone is not provided is shown.

[0057] Figure 7h A schematic structural diagram of the first air avoidance zone of the seventh form is shown.

[0058] Figure 7i A schematic structural diagram of the first air avoidance zone of the eighth form is shown.

[0059] Figure 7j A schematic structural diagram of the first air avoidance zone of the ninth form is shown.

[0060] Figure 8a Shown Figure 6 Top view of .

[0061] Figure 8b A top view of a second first axial portion is shown.

[0062] Figure 8c A top view of a third first axial portion is shown.

[0063] Figure 8d A cross-sectional view of the top of the first axial portion of the first type is shown.

[0064] Figure 8e A cross-sectional view of the top of the second first axial portion is shown.

[0065] Figure 8f A cross-sectional view of the top of the third first axial portion is shown.

[0066] Figure 9 Another partial schematic diagram of the upper structure of the nozzle assembly according to the present invention is shown.

[0067] Figure 10 A schematic projection diagram of the first elastic element and the nozzle body along the axial direction according to the present invention is shown.

[0068] Figure 11 A partial cross-sectional view of the lower portion of a nozzle assembly according to the present invention is shown.

[0069] Figure 12 1 shows a cross-sectional view of a nozzle assembly according to the present invention (the nozzle body and the elastic protective member are omitted.

[0070] Figure 13 The figure shows a schematic diagram of the injection port when the atomizing device sprays 50 times when the first air avoidance zone is not set.

[0071] Figure 14 The figure shows a schematic diagram of the injection port when the atomizing device sprays 50 times when the first air avoidance zone is set according to the present invention.

[0072] Figure 15 A schematic diagram showing the bifurcation of the mist shape and angle formed by the spraying of the existing nozzle assembly is shown.

[0073] Figure 16 A schematic diagram showing the mist shape and angle formed by the spraying of the nozzle assembly according to the present invention is shown.

[0074] Description of Reference Numerals

[0075] 204 container; 2046 outlet opening; 206 elastic ring; 208 nozzle; 2082 hole; 210 cover;

[0076] 1 nozzle cover; 11 injection port; 12 receiving recess;

[0077] 2 nozzle body; 21 flow channel;

[0078] 3 Elastic protective member; 31 First through hole; 311 Hole wall; 32 First axial portion; 33 Second axial portion; 34 First transition wall; 341 First wall; 342 Second wall; 35 Second transition wall; 36 First escape zone; 37 Second escape zone;

[0079] 4 first fixing member; 41 second through hole; 42 annular connecting portion;

[0080] 5 first elastic element; 6 filter element; 7 second elastic element; 8 spray body; 81 liquid storage area;

[0081] 9 Upper cover; 10 First elastic sealing member; 20 Lower cover; 30 Second fixing member; 40 Second elastic sealing member. DETAILED DESCRIPTION

[0082] To make the technical solutions and beneficial effects of the present invention more clearly understood, the following detailed description is given by way of specific embodiments. The accompanying drawings are not necessarily drawn to scale, and local features may be enlarged or reduced to more clearly illustrate the details of the local features. Unless otherwise defined, the technical and scientific terms used herein have the same meanings as those in the technical field to which this application belongs.

[0083] In the description of the present invention, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "height", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of simplifying the description of the present invention, and do not indicate that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and should not be understood as a limitation to the present invention.

[0084] In this disclosure, the terms "first" and "second" are used solely for descriptive purposes and should not be construed as indicating the relative importance of the features indicated or the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly include at least one such feature. In the description of this disclosure, "plurality" means at least two, such as two or three, and "several" means at least one, such as one, two, or three, unless otherwise specifically defined.

[0085] In the present invention, unless otherwise expressly defined, the terms "installed," "connected," "connect," "fixed," and "disposed" should be understood broadly. For example, "connection" can mean fixed, removable, or integrated; it can mean mechanical or electrical; it can mean direct or indirect connection through an intermediary; it can also mean internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of these terms in the present invention based on specific circumstances.

[0086] In the present invention, unless otherwise clearly defined, when a first feature is “on,” “above,” “above,” “above,” “below,” “below,” or “below” a second feature, the first feature and the second feature may be in direct contact, or the first feature and the second feature may be in indirect contact via an intermediate medium. Moreover, when a first feature is “on,” “above,” or “above” a second feature, it may mean that the first feature is directly above or obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than the horizontal height of the second feature. When a first feature is “below,” “below,” or “below” a second feature, it may mean that the first feature is directly below or obliquely below the second feature, or simply means that the horizontal height of the first feature is lower than the horizontal height of the second feature.

[0087] In the present invention, “axial direction” refers to the axial direction of the nozzle assembly or a direction parallel to the axial direction of the nozzle assembly, and “radial direction” refers to any direction perpendicular to the “axial direction”.

[0088] The following is based on Figures 2 to 16 Specific embodiments according to the present invention are described in detail.

[0089] In this embodiment, if Figure 2 As shown, the nozzle assembly includes a nozzle cover 1, a nozzle body 2, an elastic protective member 3, a first fixing member 4, a first elastic element 5, a filter element 6, a second elastic element 7, a spray body 8, an upper cover 9, a first elastic seal 10, a lower cover 20, a second fixing member 30 and a second elastic seal 40. Among them, the nozzle cover 1, the nozzle body 2, the elastic protective member 3, the first fixing member 4, the first elastic element 5, the filter element 6, the second elastic element 7, the upper cover 9 and the first elastic seal 10 are installed at the upper end of the spray body 8, and the lower cover 20, the second fixing member 30 and the second elastic seal 40 are installed at the lower end of the spray body 8.

[0090] like Figures 2 to 4 As shown, the nozzle cover 1 includes an injection port 11 and an accommodating recess 12. The injection port 11 is located approximately in the center of the nozzle cover 1 and is used to allow liquid (e.g., liquid medicine) to be ejected. The accommodating recess 12 is formed by axially upward depression from the lower end surface of the nozzle cover 1 and is used to accommodate the nozzle body 2 and the elastic protective member 3.

[0091] like Figure 3 and Figure 5 As shown, the nozzle body 2 is roughly cuboid-shaped and is made of silicon and glass bonded together. It has at least one micrometer-scale flow channel 21 that connects to the injection port 11. When the nozzle assembly is in operation, liquid passes through the flow channel 21 and the injection port 11 in sequence, and is ejected from the injection port 11.

[0092] like Figure 3 、 Figure 6 As shown in Figure 7, the elastic protective member 3 includes a first through hole 31, a first axial portion 32, a second axial portion 33, a first transition wall 34, and a second transition wall 35. The first transition wall 34 includes a first wall 341 and a second wall 342. The first through hole 31 is axially disposed through the elastic protective member 3. One end of the first transition wall 34 is connected to the first axial portion 32, and the other end is connected to the hole wall 311 of the first through hole 31. The second transition wall 35 is connected to the second axial portion 33 at one end, and to the hole wall 311 of the first through hole 31 at the other end.

[0093] It should be noted that the specific size of the second transition wall 35 can be the same as the structure of the first transition wall 34, but should not be limited to the structure of the first transition wall 34. As long as the setting of the second transition wall 35 is reasonable, it can also be set as shown in the background technology, but is not limited to the above structure.

[0094] like Figure 3 and Figure 6 As shown, the nozzle body 2 is inserted into the first through hole 31 of the elastic protective member 3, and the elastic protective member 3 is in a compressed state so as to be able to provide buffering protection for the nozzle body 2. After the nozzle body 2 is inserted into the elastic protective member 3, the integral body formed is embedded in the accommodating recess 12 of the nozzle cover 1. At this time, the first wall 341, the second wall 342 and the outer peripheral surface of the nozzle body 2 enclose a first avoidance zone 36. In this way, when the nozzle body 2 vibrates roughly along the axial direction and causes the elastic protective member 3 to deform, a part of the upper end of the elastic protective member 3 can enter the first avoidance zone 36, thereby avoiding running out from the upper end surface of the nozzle body 2, and further avoiding the generation of debris at the injection port 11. Accordingly, the mist shape and fog angle generated by the atomizing device are stable (such as Figure 16 As shown), the atomization effect of the atomization device is good.

[0095] In this embodiment, if Figure 6 、 Figure 7a and Figure 8aAs shown, the first transition wall 34 includes a first wall 341 and a second wall 342. The first wall 341 and the first axial portion 32 are spaced apart in the axial direction. One end of the second wall 342 is connected to the first axial portion 32, and the other end is connected to the first wall 341. The end of the first wall 341 away from the second wall 342 is connected to the hole wall 311 of the first through hole 31. The first wall 341, the second wall 342, and the outer circumference of the nozzle body 2 together form a first clearance zone 36.

[0096] In this embodiment, the second wall 342 or the cross-section of the second wall 342 at its connection with the first axial portion 32 is 90-170°, preferably 90-150°, and preferably 120-135°, to the first axial portion 32. The first wall 341 or the cross-section of the first wall 341 at its connection with the first through hole 31 is 90-170°, preferably 120-150°, and preferably 120-135° to the hole wall 311. By providing the first wall 341 and the second wall 342, a first escape zone 36 is formed between the nozzle body 2, the first wall 341, and the second wall 342. After the elastic protective member 3 is squeezed, the first escape zone 36 can accommodate the deformed portion of the elastic protective member 3. When designing the actual angle, technicians in this field can reasonably adjust the angle between the second wall 342 or the cross-section of the second wall 342 at the connection with the first axial portion 32 and the first axial portion 32, as well as the angle between the first wall 341 or the cross-section of the first wall 341 at the connection with the first through hole 31 and the hole wall 311 as needed.

[0097] It should be noted that if Figure 7a 、 7b As shown in Figures 7c and 7d, the first wall 341 and the second wall 342 can be not only planar, but also curved or other irregular structures. In other words, the first transition wall 34 can be formed by combining regular planes, irregular curved surfaces, or a combination of planes and curved surfaces.

[0098] It should be understood that although the above content describes in detail the configuration of the first escape zone 36, the present invention is not limited thereto, and the first escape zone 36 may also have other configurations. For example, at least one wall surface may be provided between the first wall surface 341 and the second wall surface 342, and the shape of the wall surface includes but is not limited to a plane or a curved surface, thereby forming a first escape zone 36, such as Figure 7e and 7f shown.

[0099] It should be understood that the first transition wall 34 may also be just a complete second wall 342, such as Figure 7h and 7iSpecifically, the second wall surface 342 or the tangent plane of the second wall surface 342 at the connection with the first axial portion 32 forms an angle of 90 to 170 degrees, preferably 120 to 150 degrees, and preferably 120 to 135 degrees with the first axial portion 32, and the second wall surface 342 or the tangent plane of the second wall surface 342 at the connection with the first through hole 31 forms an angle of 90 to 170 degrees, preferably 120 to 150 degrees, and preferably 120 to 135 degrees with the hole wall surface 311. In actual design, those skilled in the art can reasonably set the angle between the second wall surface 342 or the tangent plane of the second wall surface 342 at the connection with the first axial portion 32 and the first axial portion 32, and the angle between the second wall surface 342 or the tangent plane of the second wall surface 342 at the connection with the first through hole 31 and the hole wall surface 311 according to actual circumstances.

[0100] It should be noted that the second wall surface 342 can be constructed as a flat surface, a curved surface or other irregular wall surfaces, such as Figure 7h and 7i shown.

[0101] In general, the structure of the first avoidance zone 36 only requires the formation of a space area to accommodate the deformation of the elastic protective member 3 caused by the roughly axial movement of the nozzle body 2, thereby preventing the upper end of the elastic protective member 3 from running out from the upper end surface of the nozzle body 2.

[0102] It should be noted that after setting the first avoidance zone 36, the installation direction of the nozzle body 2 is also restricted, that is, the outlet of the flow channel 21 of the nozzle body 2 must be at the same end of the elastic protective member 3 as the first avoidance zone 36, and be close to the end of the nozzle cover 1.

[0103] In this embodiment, the first axial portion 32 is a support portion protruding outward, and its cross section is generally fan-shaped, and the edge of the first axial portion 32 is connected to one side of the first transition wall 34, and the other side of the first transition wall 34 is connected to the first through hole 31, as shown in FIG. Figure 7j This allows the first axial portion 32 to be in close contact with the nozzle cover 1 while forming a first escape zone 36 with the first transition wall 34 , thereby accommodating the deformed portion of the elastic protective member 3 .

[0104] It should be noted that the first axial portion 32 may be a concentric continuous arc-shaped protrusion (such as Figure 8b ), or it can be a continuous serpentine protrusion (such as Figure 8c It should be noted that the first axial portion 32 may be not only regularly arranged but also irregularly arranged, and the first axial portion 32 itself may be a regular protrusion or an irregular protrusion, or a combination of the two, and its shape and structure are not limited to the shapes shown in the embodiments of the present invention.

[0105] The top of the first axial portion 32 may be in an arc shape, a flat surface, or other regular or irregular shapes, such as Figure 8d 、 8e and 8f.

[0106] In this embodiment, if Figure 8a As shown, the first wall surface 341 is a plane whose projection in the axial direction is roughly rectangular, and the maximum width W of the first wall surface 341 in the radial direction ranges from 2.1 mm to 2.5 mm, preferably from 1.3 mm to 1.8 mm; the maximum length L of the first wall surface 341 in the radial direction ranges from 2.4 mm to 3.8 mm, preferably from 2.5 mm to 3.3 mm.

[0107] like Figure 7a As shown, the first axial portion 32 is a plane perpendicular to the axial direction. The shortest axial distance D between the first axial portion 32 and the bottom of the first clearance zone 36 ranges from 0.03 mm to 0.5 mm, preferably from 0.05 mm to 0.3 mm. Furthermore, the outer edge of the upper end surface of the elastic protective member 3 has a chamfered angle, with the angle ranging from 0.01 mm to 0.5 mm, preferably from 0.05 mm to 0.2 mm.

[0108] It should be noted that the above-mentioned shape and size limitations are merely preferred embodiments. The first wall surface 341 may be a flat surface, a curved surface, or an irregular surface. The axial projection of the first wall surface 341 is not limited to a rectangle and may also be an ellipse or other shape. Accordingly, the dimensions are not limited to those in the above-mentioned embodiment.

[0109] In this embodiment, if Figure 3 and Figure 7a As shown, one end of the second transition wall 35 is connected to the second axial portion 33, and the other end is connected to the hole wall 311 of the first through hole 31. The second transition wall 35 and the outer peripheral surface of the nozzle body 2 enclose a second escape zone 37. The second escape zone 37 and the first escape zone 36 are respectively located on opposite axial sides of the elastic protector 3. The provision of the second escape zone 37 can accommodate a portion of the elastic protector 3 in the event of undesirable deformation, preventing the lower end surface of the elastic protector 3 from escaping from the lower end surface of the nozzle body 2 and affecting the horizontality of the bottom of the nozzle body 2.

[0110] It is understood that the second air-avoidance area 37 is not limited to Figure 7aIn the specific embodiment shown in FIG, the structure of the second escape zone 37 can be the same or similar to that of the first escape zone 36, or it can be completely different. Generally speaking, the structure of the second escape zone 37 only needs to form a space area to accommodate a portion of the elastic protection member 3 in the event of undesirable deformation, thereby preventing the lower end of the elastic protection member 3 from escaping from the lower end surface of the nozzle body 2.

[0111] It should be noted that the second air-avoidance zone 37 is not necessarily provided. Figure 7g When the second avoidance zone 37 is not provided, the second transition wall 35 does not exist accordingly. For example, when the second transition wall 35 is not provided, the second axial portion 33 is directly connected to the hole wall 311 .

[0112] In this embodiment, the elastic protective member 3 may be made of silicone, rubber or other soft materials, and its function is to effectively provide a buffer for the nozzle body 2 when the nozzle body 2 is working.

[0113] In this embodiment, if Figure 4 and Figure 9 As shown, the first fixing member 4 includes a second through-hole 41 and an annular connecting portion 42. The second through-hole 41 axially extends through the first fixing member 4, and the annular connecting portion 42 extends axially away from the upper end surface of the first fixing member 4. The annular connecting portion 42 is inserted into the receiving recess 12 of the nozzle cover 1 and is connected to the nozzle cover 1 through an interference fit. The upper end of the annular connecting portion 42 abuts the lower end of the elastic protective member 3. The interference fit connection between the nozzle cover 1 and the first fixing member 4 achieves better coaxiality after assembly, while also preventing deformation of the elastic protective member 3 from entering the gap between the two, which could degrade or even render the original sealing function ineffective.

[0114] In this embodiment, if Figure 9 As shown, there is an axial gap between the nozzle body 2 and the first fixing member 4 to prevent damage to the lower end surface of the nozzle body 2 due to impact. The axial size of the gap ranges from 0.01 mm to 1 mm, preferably from 0.03 mm to 0.3 mm, and more preferably from 0.05 mm to 0.25 mm.

[0115] Furthermore, a first elastic element 5 is provided in the above-mentioned gap, and the axial sides of the first elastic element 5 respectively abut against the nozzle body 2 and the first fixing member 4. In this way, by providing the first elastic element 5 to limit the axial displacement of the nozzle body 2, it is possible to effectively avoid the generation of burrs (such as Figure 14 As shown), it is beneficial to improve the stability of the fog shape and angle of the atomizing device (as shown Figure 16As shown), the effective particle size ratio is significantly increased. Wherein, the first elastic element 5 can be an annular gasket. Figure 10 As shown, the annular gasket has a circular inner hole, the diameter of which is not less than the length of the inlet of the flow channel 21. This prevents the annular gasket from adversely affecting the flow of liquid into the flow channel 21. At the same time, the outer diameter of the annular gasket can be greater than the length of the nozzle body 2, which can better provide axial support for the nozzle body 2.

[0116] The effect of setting the annular gasket was tested through experiments, and the test results are shown in Table 1.

[0117] In the experiment, the number of test samples was: 30 sets of atomization devices with and without annular gaskets;

[0118] Test conditions: flow rate 28.3 L / min, humidity in the instrument spray collection chamber not less than 98%.

[0119] Table 1 Atomization effect test data with and without annular gasket

[0120]

[0121] Table 1 clearly shows that the average effective particle size (particle size no larger than 5.8 microns) produced by the atomizer without the annular gasket assembly was 72.28%, while the average effective particle size (particle size no larger than 5.8 microns) produced by the atomizer with the annular gasket assembly was 81.62%. This shows that adding an annular gasket can effectively increase the proportion of effective particle size and improve the atomization effect of the atomizer.

[0122] It can be understood that the inner hole of the annular gasket can also be square or irregular. Generally speaking, the shape of the inner hole of the annular gasket needs to be configured at least so that the annular gasket does not block the entrance of the flow channel 21, so as to avoid the annular gasket from having an adverse effect on the liquid flowing into the flow channel 21.

[0123] It is further understood that the first elastic element 5 is not limited to the aforementioned annular gasket, but may also be other types of elastic elements capable of elastically supporting the nozzle body 2, such as a plurality of separately provided elastic pads, each of which may be disposed at the four corners of the nozzle body 2 to provide axial support for the nozzle body 2. It should be understood that the first elastic element 5 must not obstruct the inlet of the flow channel 21.

[0124] It should be further explained that when the nozzle assembly is working, the first elastic element 5 will also undergo a certain degree of deformation, and a part of the first elastic element 5 will enter the above-mentioned second avoidance zone 37. That is, the setting of the second avoidance zone 37 also effectively avoids the influence of the undesirable deformation of the first elastic element 5 on the horizontality of the lower end of the nozzle body 2, thereby effectively avoiding the change in the angle of the flow channel 21 and affecting the final atomization effect.

[0125] In this embodiment, if Figure 3 and Figure 9 As shown, the filter element 6 is disposed in the second through hole 41 of the first fixing member 4 and is used to filter the liquid about to enter the nozzle body 2. The filter element 6 has a pore size ranging from 2 microns to 20 microns, preferably from 2 microns to 10 microns, so as to effectively filter particulate matter in the liquid and prevent the particulate matter from entering the flow channel 21 of the nozzle body 2 and affecting the stability of the atomizing device or even causing the atomizing device to fail.

[0126] Furthermore, the filter element 6 is connected to the first fixing member 4 through an interference fit, which prevents liquid from flowing through the clearance between the filter element 6 and the first fixing member 4, ensuring that all liquid entering the flow channel 21 is filtered by the filter element 6. The interference fit between the filter element 6 and the first fixing member 4 has an interference fit value ranging from 0.01 mm to 0.5 mm, preferably from 0.01 mm to 0.25 mm, and more preferably from 0.03 mm to 0.15 mm.

[0127] In this embodiment, the filter element 6 is made of polyethylene or polypropylene.

[0128] In this embodiment, if Figure 2 and Figure 3 As shown, the second elastic element 7 is arranged in the accommodating recess 12 of the nozzle cover 1, and is axially arranged between the nozzle cover 1 and the nozzle body 2, and the axial sides of the second elastic element 7 respectively abut the nozzle cover 1 and the nozzle body 2. In this way, the second elastic element 7 can buffer and protect the nozzle body 2 above the nozzle body 2, reducing the risk of the nozzle body 2 breaking. Among them, the second elastic element 7 can be an elastic gasket. It can be understood that the elastic gasket has an opening for liquid to pass through, and the opening needs to be larger than the injection port 11 to avoid adverse effects on the liquid entering the injection port 11. Furthermore, the thickness of the elastic gasket ranges from 0.01 mm to 1 mm, preferably from 0.01 mm to 0.3 mm, and more preferably from 0.01 mm to 0.1 mm. The material of the elastic gasket can be plastic, silicone or rubber.

[0129] The second elastic element 7 offers numerous advantages, including excellent chemical resistance, toughness, roughness, flatness, and minimal thickness tolerance. It easily creates a small buffer between rigid metal components and fragile glass and silicon chips, preventing damage from direct contact between brittle and rigid materials. Furthermore, the second elastic element's smoothness ensures uniform stress distribution across the elastic protective element during continuous high and low pressure shocks, preventing minor tears that could cause unnecessary damage due to poor sealing, further extending the product's service life.

[0130] In this embodiment, if Figure 2 and Figure 3 As shown, the upper cover 9 and the spray body 8 are threadedly connected, the nozzle cover 1, the nozzle body 2, the elastic protective member 3 and the first fixing member 4 are all axially arranged between the upper cover 9 and the spray body 8, and the first elastic sealing member 10 is axially arranged between the first fixing member 4 and the spray body 8 to seal the gap between the first fixing member 4 and the spray body 8. At the same time, during the installation of the upper cover 9 on the spray body 8, the upper cover 9 indirectly applies a force to the first elastic sealing member 10 through the nozzle cover 1 and the first fixing member 4, so that the first elastic sealing member 10 is in a compressed state. Accordingly, the first elastic sealing member 10 indirectly applies an axial reaction force to the upper cover 9, which can effectively prevent the upper cover 9 from loosening during transportation and use.

[0131] In this embodiment, the upper cover 9 has an opening for the atomized liquid to pass through, and the first elastic sealing member 10 can be an O-ring.

[0132] In this embodiment, if Figure 2 and Figure 11 As shown, the lower cover 20 is threadedly connected to the spray body 8. The second fixing member 30 is axially disposed between the lower cover 20 and the spray body 8. The second elastic seal 40 is disposed between the second fixing member 30 and the spray body 8 to seal the gap between the second fixing member 30 and the spray body. Simultaneously, during installation of the lower cover 20 on the spray body 8, the lower cover 20 indirectly applies force to the second elastic seal 40 via the second fixing member 30, causing the second elastic seal 40 to be compressed. Accordingly, the second elastic seal 40 indirectly applies an axial reaction force to the lower cover 20, effectively preventing the lower cover 20 from loosening during transportation and use.

[0133] In this embodiment, if Figure 12 As shown, both the lower cover 20 and the second fixing member 30 have openings for liquid to flow in, and the inflowing liquid enters the liquid storage area 81 of the spray body 8. The second elastic sealing member 40 can be an O-ring.

[0134] In this embodiment, the upper cover 9 and the lower cover 20 may be made of metal. The first elastic sealing member 10 and the second elastic sealing member 40 may be made of silicone or rubber.

[0135] In this embodiment, the first fixing member 4 and the spray body 8 are connected by an interference fit, and the second fixing member 30 and the spray body 8 are connected by an interference fit. The interference fit ranges from 0.01 mm to 0.3 mm, preferably from 0.01 mm to 0.15 mm, and more preferably from 0.01 mm to 0.1 mm. This interference fit ensures better coaxiality after component assembly and prevents the first and second elastic seals 10, 40 from compressing and deforming into the fitting gap, which could degrade or even render the original sealing function ineffective.

[0136] In addition, the present invention also provides an atomizing device, which includes the elastic protective member in any of the above embodiments or the nozzle assembly in any of the above implementation modes.

[0137] Then, two atomizing devices including two elastic protective members without and with the first escape zone 36 were tested, and the condition of the injection port 11 was checked after the atomizing device sprayed 50 times. Figure 13 、 Figure 14 、 Figure 15 and Figure 16 It can be seen that Figure 13 In the injection port 11, a ridge of the elastic protective member 3 is generated, and the following is generated: Figure 15 The atomization effect shows that the spray shape and angle have changed, and the corresponding amount of liquid medicine retained at the injection port 11 is also relatively large. Figure 14 In the figure, it can be clearly seen that no ridges are formed in the injection port 11, so it will not affect the atomization effect of the atomizer. The corresponding atomization effect diagram is shown in Figure 16. It can be seen that when the spray is ejected from the injection port 11, the mist shape is normal, and the corresponding liquid medicine is less retained in the injection port 11.

[0138] It should be understood that the above embodiments are exemplary and are not intended to encompass all possible implementations of the claims. Various modifications and variations may be made to the above embodiments without departing from the scope of this disclosure. Similarly, the various technical features of the above embodiments may be arbitrarily combined to form additional embodiments of the present invention that may not be explicitly described. Therefore, the above embodiments merely illustrate several implementations of the present invention and do not limit the scope of protection of the patent of this invention.

Claims

1. An elastic protective member, characterized in that: The elastic protective member has a first through hole, a first axial portion and a second axial portion, A first transition wall is provided at the connection between the first through hole and the first axial portion. Furthermore, a first clearance zone is formed between the first transition wall surface and an extension surface of the hole wall surface of the first through hole; A second transition wall is provided at the connection between the first through hole and the second axial portion. A second clearance zone is formed between the second transition wall surface and the extended surface of the hole wall surface of the first through hole. When the elastic protective member is squeezed, a portion of the elastic protective member may enter the first escape zone and / or the second escape zone to prevent the elastic protective member from protruding from the end surface of the nozzle body due to deformation.

2. The elastic protective member according to claim 1, characterized in that: The first transition wall surface includes a second wall surface, one side of the second wall surface is connected to the first through hole, and the other side is connected to the first axial portion, and the first clearance zone is formed between the second wall surface and the extension surface of the hole wall surface of the first through hole.

3. The elastic protective member according to claim 1, wherein: The first transition wall includes a first wall and a second wall, The first axial portion and the first wall are spaced apart from each other in the axial direction of the elastic protective member. One end of the second wall surface is connected to the first axial portion, the other end of the second wall surface is connected to one end of the first wall surface, and the other end of the first wall surface is connected to the hole wall surface of the first through hole. The first wall surface, the second wall surface and the extended surface of the hole wall surface of the first through hole form the first air avoidance area.

4. The elastic protective member according to claim 3, characterized in that: At least one wall is provided between the first wall and the second wall, and two ends of the wall are connected to the first wall and the second wall respectively.

5. The elastic protective member according to claim 1, wherein: The first axial portion is a support portion protruding outward, and an edge of the support portion is connected to the first transition wall surface, and an inner side of the first transition wall surface is connected to the first through hole.

6. The elastic protective member according to claim 5, characterized in that: The first axial portion is a continuous protrusion.

7. The elastic protective member according to claim 1, wherein: The first transition wall surface is a plane, a curved surface, a surface formed by combining two planes, a surface formed by combining two curved surfaces, or a surface formed by a plane and a curved surface.

8. A nozzle assembly comprising the elastic protective member according to any one of claims 1 to 7, characterized in that: The nozzle assembly further comprises a nozzle cover and a nozzle body, The nozzle cover has a spray port; The nozzle body has a flow channel communicating with the injection port; The nozzle body is inserted into the first through hole along the axial direction of the nozzle assembly. When the nozzle body is displaced substantially along the axial direction and the elastic protection member is deformed, a portion of the elastic protection member enters the first escape zone and / or the second escape zone.

9. The nozzle assembly according to claim 8, wherein: The nozzle assembly further includes a first fixing member and a first elastic element, The nozzle body, the first elastic element and the first fixing member are sequentially arranged in the axial direction, and the first elastic element abuts against the nozzle body and the first fixing member at both sides in the axial direction to limit the axial movement of the nozzle body.

10. The nozzle assembly according to claim 9, wherein The first elastic element does not block any portion of the inlet of the flow channel.

11. The nozzle assembly according to claim 9, wherein The first fixing member has a second through hole, and the second through hole is connected to the flow channel. The nozzle assembly further includes a filter element, which is disposed in the second through hole and is used to filter liquid that is about to enter the flow channel.

12. The nozzle assembly according to claim 8, wherein The nozzle assembly further includes a second elastic element, which is arranged between the nozzle cover and the nozzle body in the axial direction. Furthermore, the second elastic element abuts against the nozzle body and the nozzle cover at both sides in the axial direction respectively.

13. The nozzle assembly according to claim 9, wherein The nozzle assembly further includes a spray body, an upper cover, a first elastic seal, a lower cover, a second fixing member and a second elastic seal. The upper cover is threadedly connected to one end of the spray body, the nozzle cover, the nozzle body, the elastic protective member and the first fixing member are all located between the upper cover and the spray body in the axial direction, the first elastic sealing member is disposed between the first fixing member and the spray body, and the first elastic sealing member is in a compressed state to apply an axial force to the upper cover; The lower cover is threadedly connected to the other end of the injection body, the second fixing piece is arranged between the lower cover and the injection body in the axial direction, the second elastic seal is arranged between the second fixing piece and the injection body, and the second elastic seal is in a compressed state to apply an axial force to the lower cover.

14. The nozzle assembly according to claim 13, wherein: The nozzle cover is connected to the first fixing member by interference fit, the first fixing member is connected to the spray body by interference fit, and the second fixing member is connected to the spray body by interference fit.

15. The nozzle assembly according to claim 11, wherein The first fixing member and the filter element are connected by interference fit.

16. An atomizing device, characterized in that: The atomizing device comprises the elastic protective member according to any one of claims 1 to 7.

17. An atomizing device, characterized in that: The atomizing device comprises the nozzle assembly according to any one of claims 8 to 15.

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