Elastic protection piece, nozzle assembly and atomization device

Abstract

The invention relates to an elastic protection piece, a nozzle assembly and an atomization device. The elastic protection piece is provided with the first through hole, the first axial portion and the second axial portion, the first transition wall face is arranged at the connecting position of the first through hole and the first axial portion, the first receding area is formed between the first transition wall face and the extending face of the hole wall face of the first through hole, and when the elastic protection piece is extruded, the first receding area is located between the first transition wall face and the extending face of the hole wall face of the first through hole. One part of the elastic protection piece can enter the first clearance area; a second transition wall face is arranged at the connecting position of the first through hole and the second axial part, and a second clearance area is formed between the second transition wall face and the extending face of the hole wall face of the first through hole. According to the atomization device, the first receding area is arranged at one end of the elastic protection part, so that scraps can be effectively prevented from being generated at the spraying opening, and the atomization effect of the atomization device is finally prevented from being affected.

Description

Technical Field

[0001] The present invention relates to the technical field of medical equipment, 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 announcement number "CN108057150B" discloses a high-pressure liquid transmission device (atomizer). According to the content disclosed in the patent, Figure 1 As shown, the atomizer 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 formed by 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. The nozzle 208 and the cover 210 have a gap in the flow direction of the fluid.

[0004] Since there is a gap between the nozzle 208 and the cover body 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, which will cause debris to be generated at the outlet opening 2046 of the container 204, thereby making the fog shape and fog angle produced by the atomizer unstable, such as bifurcation or tilt, and the amount of residual liquid medicine increases, which ultimately affects the atomization effect. Summary of the invention

[0005] Problem that the invention aims to solve

[0006] When the existing atomizer is assembled and working, the elastic protective part of the nozzle is easily squeezed and protrudes above the nozzle, thereby forming a protrusion. When the nozzle sprays atomized liquid, the protrusion not only affects the atomization effect of the liquid, but also forms debris under the impact of the atomized liquid, and is inhaled by the human body along with the spray, affecting the health of the user; at the same time, the debris is easy to enter the flow channel and get stuck in the flow channel, thereby affecting the atomization effect of the nozzle; in addition, the existence of debris in the flow channel will impact the nozzle body, increasing the risk of nozzle breakage.

[0007] Solutions for solving problems

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

[0009] A first transition wall is provided at a location where the first through hole and the first axial portion are connected.

[0010] Furthermore, a first avoidance 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 a location where the first through hole and the second axial portion are connected.

[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 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.

[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 surface 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, the other end of the first wall surface is connected to the hole wall surface of the first through hole, and 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 disposed between the first wall and the second wall, and two ends of the wall are respectively connected to the first wall and the second wall.

[0019] In at least one embodiment, 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.

[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 so that 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 arranged in sequence in the axial direction, and the first elastic element abuts against the nozzle body and the first fixing member at two sides in the axial direction respectively 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 communicated with the flow channel.

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

[0032] In at least one embodiment, the nozzle assembly further comprises a second elastic element, wherein the second elastic element is disposed 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 two 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 arranged 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 member is arranged between the lower cover and the injection body in the axial direction, the second elastic sealing member is arranged between the second fixing member and the injection body, and the second elastic sealing member 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 the undesired deformation of the elastic protective member when the nozzle assembly is working, it is possible to effectively avoid the elastic protective member 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 beneficial to ensuring the stability of the fog shape and fog 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 injection 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 diameters sprayed from the atomizing device can be increased, thereby improving the atomization effect. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0045] Figure 2 A structural exploded view of a nozzle assembly according to the present invention is shown.

[0046] Figure 3 A partial cross-sectional view of the 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 Shows 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 the structure without setting the second air avoidance zone 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 Shows Figure 6 Top view of the .

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

[0067] Fig.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] Fig.11 A partial cross-sectional view of the lower portion of a nozzle assembly according to the present invention is shown.

[0069] Fig.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] Fig.13 A schematic diagram of the injection port when the atomizing device sprays 50 times when the first air avoidance zone is not provided is shown.

[0071] Fig.14 The schematic diagram of the injection port when the atomizing device sprays 50 times when the first air avoidance zone is set in the present invention is shown.

[0072] Fig.15 A schematic diagram showing the bifurcation of the mist angle formed by the spraying of the existing nozzle assembly.

[0073] Fig.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 protection 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] In order to make the technical solutions and beneficial effects of the present invention more clearly understandable, the following is a detailed description by listing specific embodiments. The drawings are not necessarily drawn to scale, and local features may be enlarged or reduced to more clearly show 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, terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "height", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of simplified description of the present invention, and do not indicate that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and should not be understood as a limitation to the present invention.

[0084] In the present invention, the terms "first" and "second" are only used for the purpose of clear description and cannot be understood as the relative importance of the indicated features or the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly include at least one of the features. In the description of the present invention, "multiple" means at least two, such as two, three, etc.; "several" means at least one, such as one, two, three, etc., unless otherwise clearly and specifically defined.

[0085] In the present invention, unless otherwise clearly defined, the terms "install", "connect", "connect", "fix", "set", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0086] In the present invention, unless otherwise clearly defined, a first feature being “on”, “above”, “above”, “below”, “below”, “below” or “below” a second feature may mean that the first feature is in direct contact with the second feature, or the first feature and the second feature are in indirect contact with each other through an intermediate medium. Moreover, a first feature being “on”, “above” or “above” a second feature 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. A first feature being “below”, “below” or “below” a second feature 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] According to the following 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. 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 a receiving recess 12. The injection port 11 is located approximately at the center of the nozzle cover 1 and is used for liquid (e.g., liquid medicine) to be ejected. The receiving recess 12 is formed by being recessed upward along the axial direction from the lower end surface of the nozzle cover 1 and is used for receiving 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 in the shape of a cuboid, and is made of silicon and glass bonded together. The nozzle body 2 has at least one flow channel 21, which is a micron-level flow channel and is connected to the injection port 11. When the nozzle assembly is working, the liquid can pass through the flow channel 21 and the injection port 11 in sequence and be ejected from the injection port 11.

[0092] like Figure 3 , Figure 6 As shown in FIG. 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 surface 34, and a second transition wall surface 35. The first transition wall surface 34 includes a first wall surface 341 and a second wall surface 342. The first through hole 31 is arranged to penetrate the elastic protective member 3 in the axial direction, one end of the first transition wall surface 34 is connected to the first axial portion 32, and the other end is connected to the hole wall surface 311 of the first through hole 31, and one end of the second transition wall surface 35 is connected to the second axial portion 33, and the other end is connected to the hole wall surface 311 of the first through hole 31.

[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 second transition wall 35 is reasonably set, 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 buffer protection for the nozzle body 2. The nozzle body 2 is inserted into the elastic protective member 3 to form a whole which is embedded in the accommodating recess 12 of the nozzle cover 1. At this time, the first wall surface 341, the second wall surface 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 in the axial direction and the elastic protective member 3 is deformed, 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 fog shape and fog angle generated by the atomization device are stable (such as Fig.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 surface 34 includes a first wall surface 341 and a second wall surface 342. The first wall surface 341 and the first axial portion 32 are spaced apart in the axial direction, one end of the second wall surface 342 is connected to the first axial portion 32, and the other end is connected to the first wall surface 341, and the end of the first wall surface 341 away from the second wall surface 342 is connected to the hole wall surface 311 of the first through hole 31. At this time, the first wall surface 341, the second wall surface 342 and the outer peripheral surface of the nozzle body 2 enclose a first clearance area 36.

[0096] In this embodiment, the second wall 342 or the section of the second wall 342 at the connection with the first axial portion 32 is 90-170°, preferably 90-150°, preferably 120-135° with the first axial portion 32, and the first wall 341 or the section of the first wall 341 at the connection with the first through hole 31 is 90-170°, preferably 120-150°, preferably 120-135° with the hole wall 311. By setting the first wall 341 and the second wall 342, a first clearance 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 clearance 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 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 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 FIGS. 7c and 7d, the first wall surface 341 and the second wall surface 342 may be not only planes, but also curved surfaces or other irregular structures. In other words, the first transition wall surface 34 may be formed by combining regular planes with planes, irregular curved surfaces with curved surfaces, or a combination of a plane and a curved surface.

[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 surface and a curved surface, so as to form 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 only a complete second wall 342, such as Figure 7h and 7iSpecifically, the second wall surface 342 or the tangent surface of the second wall surface 342 at the connection with the first axial portion 32 is 90-170°, preferably 120-150°, preferably 120-135° with the first axial portion 32, and the second wall surface 342 or the tangent surface of the second wall surface 342 at the connection with the first through hole 31 is 90-170°, preferably 120-150°, preferably 120-135° 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 surface 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 surface of the second wall surface 342 at the connection with the first through hole 31 and the hole wall surface 311 according to actual conditions.

[0100] It should be noted that the second wall surface 342 can be constructed as a plane, 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 to form a space area to accommodate the deformation of the elastic protective member 3 caused by the 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 the first avoidance zone 36 is provided, the installation direction of the nozzle body 2 is 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 at the end close to 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, such as 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 surface 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 shape shown in the embodiment of the present invention.

[0105] The top of the first axial portion 32 may be in an arc shape, a plane shape, 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 a rectangle, 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, and 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. In addition, the outer edge of the upper end surface of the elastic protective member 3 has a chamfer, and the size of the chamfer ranges 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 are only a preferred embodiment. The first wall surface 341 can be a plane, a curved surface or an irregular surface. The projection of the first wall surface 341 along the axial direction is not limited to a rectangle, but can also be an ellipse or other shapes. Accordingly, the sizes 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 both sides of the axial direction of the elastic protective member 3. By providing the second escape zone 37, a part of the elastic protective member 3 can be accommodated when the elastic protective member 3 undergoes undesirable deformation, so as to prevent the lower end surface of the elastic protective member 3 from running out 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 manner shown in FIG. 1 , 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. In general, the structure of the second escape zone 37 only requires that a space area can be formed to accommodate a part of the elastic protection member 3 when an undesirable deformation occurs, thereby preventing the lower end of the elastic protection member 3 from running out of 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 area 37 is not provided, the second transition wall surface 35 does not exist accordingly. For example, when the second transition wall surface 35 is not provided, the second axial portion 33 is directly connected to the hole wall surface 311 .

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

[0113] In this embodiment, if Figure 4 and Fig. 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 is arranged to penetrate the first fixing member 4 in the axial direction, and the annular connecting portion 42 is extended from the upper end face of the first fixing member 4 in the axial direction away from the upper end face. The annular connecting portion 42 is inserted into the accommodating recess 12 of the nozzle cover 1 and is connected with the nozzle cover 1 by interference fit, and the upper end of the annular connecting portion 42 abuts against the lower end of the elastic protective member 3. By making the nozzle cover 1 and the first fixing member 4 connected by interference fit, better coaxiality can be obtained after the two are assembled, and at the same time, it can prevent the elastic protective element 3 from entering the fitting gap between the two when it is deformed, causing the original sealing function to decrease or fail.

[0114] In this embodiment, if Fig. 9 As shown, there is a gap between the nozzle body 2 and the first fixing member 4 in the axial direction to prevent the lower end surface of the nozzle body 2 from being damaged by 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 abut against the nozzle body 2 and the first fixing member 4 respectively. In this way, by providing the first elastic element 5 to limit the axial displacement of the nozzle body 2, burrs (such as Fig.14 As shown), it is beneficial to improve the stability of the fog shape and angle of the atomization device (as shown Fig.16As shown), the effective particle size ratio is significantly increased. Wherein, the first elastic element 5 can be an annular gasket. Fig.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, so that the annular gasket can avoid adverse effects on the liquid flowing 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, so that the nozzle body 2 can be better supported axially.

[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 groups of atomization devices with and without annular gaskets;

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

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

[0120]

[0121]

[0122] It can be clearly seen from Table 1 that the effective particle size (particle size not greater than 5.8 microns) produced by the atomizer without the annular gasket group accounts for an average of 72.28%; the effective particle size (particle size not greater than 5.8 microns) produced by the atomizer with the annular gasket group accounts for an average of 81.62%. It can be seen that adding annular gaskets can effectively increase the proportion of effective particle size and improve the atomization effect of the atomizer.

[0123] It is understandable 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.

[0124] It can be further understood that the first elastic element 5 is not limited to the above-mentioned annular gasket, and can also be other forms of elastic elements that can elastically support the nozzle body 2, for example, it can be a plurality of separately arranged elastic pads, and the plurality of elastic pads can be respectively arranged at the four corners of the nozzle body 2 to axially support the nozzle body 2. It should be understood that the arrangement of the first elastic element 5 cannot cover the inlet of the flow channel 21.

[0125] 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 portion 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.

[0126] In this embodiment, if Figure 3 and Fig. 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 that is about to enter the nozzle body 2. The filter pore size of the filter element 6 has a numerical range of 2 microns to 20 microns, preferably 2 microns to 10 microns, so as to effectively filter the particles in the liquid and prevent the particles from entering the flow channel 21 of the nozzle body 2 and affecting the stability of the atomizing device and even causing the atomizing device to fail.

[0127] Furthermore, the filter element 6 is connected to the first fixing member 4 by interference fit, which can prevent the liquid from flowing through the fitting gap between the filter element 6 and the first fixing member 4, and ensure that all liquids entering the flow channel 21 are filtered by the filter element 6. The interference amount of the interference fit connection between the filter element 6 and the first fixing member 4 ranges 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.

[0128] In this embodiment, the filter element 6 is made of polyethylene or polypropylene.

[0129] In this embodiment, if Figure 2 and Figure 3 As shown, the second elastic element 7 is arranged in the receiving 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 abut the nozzle cover 1 and the nozzle body 2 respectively. 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, and 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. Further, 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.

[0130] The second elastic element 7 has many advantages such as good chemical resistance, good toughness, good roughness, flatness, small thickness tolerance variation, etc. It can easily form a small buffer between the relatively rigid metal parts and the relatively brittle glass and silicon chips, which can prevent the brittle material and the rigid material from being damaged by direct contact. In addition, the second elastic element 7 has good smoothness, which allows the elastic protective part to be evenly stressed when subjected to continuous alternating high and low pressure shocks without causing damage caused by minor tears and unnecessary poor sealing, further ensuring the service life of the product.

[0131] In this embodiment, if Figure 2 and Figure 3 As shown, the upper cover 9 is threadedly connected to the spray body 8, the nozzle cover 1, the nozzle body 2, the elastic protective member 3 and the first fixing member 4 are all arranged between the upper cover 9 and the spray body 8 in the axial direction, and the first elastic sealing member 10 is arranged between the first fixing member 4 and the spray body 8 in the axial direction, and is used 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 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.

[0132] In this embodiment, the upper cover 9 has an opening for the atomized liquid to pass through, and the first elastic sealing member 10 may be an O-ring.

[0133] In this embodiment, if Figure 2 and Fig.11 As shown, the lower cover 20 is threadedly connected to the spray body 8, the second fixing member 30 is axially arranged between the lower cover 20 and the spray body 8, and the second elastic sealing member 40 is arranged 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. At the same time, during the installation of the lower cover 20 on the spray body 8, the lower cover 20 indirectly applies force to the second elastic sealing member 40 through the second fixing member 30, so that the second elastic sealing member 40 is in a compressed state. Accordingly, the second elastic sealing member 40 indirectly applies an axial reaction force to the lower cover 20, which can effectively prevent the lower cover 20 from being loosened during transportation and use.

[0134] In this embodiment, if Fig.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 may be an O-ring.

[0135] 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.

[0136] In this embodiment, the first fixing member 4 and the injection body 8 are connected by interference fit, and the second fixing member 30 and the injection body 8 are connected by interference fit. The interference amount 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. Through the above-mentioned interference fit connection, better coaxiality of the components after assembly can be obtained, and at the same time, the first elastic seal 10 and the second elastic seal 30 can be prevented from entering the fitting gap when being compressed and deformed, thereby causing the original sealing function to decrease or fail.

[0137] In addition, the present invention also provides an atomizing device, which includes the elastic protective member in any of the above embodiments or includes the nozzle assembly in any of the above embodiments.

[0138] Then, two atomizing devices including two elastic protective members without the first escape zone 36 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. Fig.13 , Fig.14 , Fig.15 and Fig.16 It can be seen that Fig.13 In the injection port 11, a ridge of the elastic protective member 3 is formed, and the following is produced: Fig.15 The atomization effect shows that the spray shape and angle have changed, and the corresponding amount of liquid medicine retained at the nozzle 11 is relatively large. Fig.14 It can be clearly seen that no ridge is 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 sprayed out from the injection port 11, the mist shape is normal and the corresponding liquid medicine is less retained in the nozzle port 11.

[0139] It should be understood that the above embodiments are exemplary and are not intended to include all possible implementations included in the claims. Various modifications and changes may be made on the basis of the above embodiments without departing from the scope of the present disclosure. Similarly, the various technical features of the above embodiments may be arbitrarily combined to form other embodiments of the present invention that may not be explicitly described. Therefore, the above embodiments only express several implementations of the present invention and do not limit the scope of protection of the patent of the present 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 a location where the first through hole and the first axial portion are connected. Furthermore, a first avoidance 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 a location where the first through hole and the second axial portion are connected. 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 protection member is squeezed, a portion of the elastic protection member may enter the first escape zone and / or the second escape zone.

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 an extension surface of the hole wall surface of the first through hole.

3. The elastic protective member according to claim 1, characterized in that: The first transition wall surface includes a first wall surface and a second wall surface, The first axial portion and the first wall surface 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, the other end of the first wall surface is connected to the hole wall surface of the first through hole, and 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 disposed 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, characterized in that: 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 projection.

7. The elastic protective member according to claim 1, characterized in that: The first transition wall surface is a plane, a curved surface, a surface formed by a combination of planes, a surface formed by a combination of 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 also includes 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 so that 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, characterized in that 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 arranged in sequence in the axial direction, and the first elastic element abuts against the nozzle body and the first fixing member at two sides in the axial direction respectively to limit the axial movement of the nozzle body.

10. The nozzle assembly according to claim 9, characterized in that The first elastic element does not block any part of the inlet of the flow channel.

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

12. The nozzle assembly according to claim 8, characterized in that 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 two sides in the axial direction respectively.

13. The nozzle assembly according to claim 9, characterized in that The nozzle assembly also 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 arranged 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 member is arranged between the lower cover and the injection body in the axial direction, the second elastic sealing member is arranged between the second fixing member and the injection body, and the second elastic sealing member is in a compressed state to apply an axial force to the lower cover.

14. The nozzle assembly according to claim 13, characterized in that 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, characterized in that 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 spray assembly according to any one of claims 8 to 15.

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