A nozzle retention mechanism

Abstract

The utility model discloses a kind of nozzle holding mechanisms, including matching piece, press solid and elastic piece;The outer edge of the matching piece is provided with protrusion, the inner side of the protrusion is provided with downwardly inclined inclined surface;The press solid is set on the protrusion and is enclosed with the matching piece one nozzle space;The elastic piece is set in the nozzle space, the bottom of the elastic piece is interference fit with the inclined surface and sealing, and the elastic piece is used to hold nozzle.This nozzle holding mechanism is by protrusion outer migration to edge position and change and use inclined surface and elastic piece interference fit, while guaranteeing airtightness, avoid nozzle assembly damage, improve product yield rate.Inclined surface can prevent the bottom of elastic piece from turning outwards, leading to a decline in sealing performance or failure, further improving the reliability of sealing.The protrusion of outer migration can play the role of pre-positioning, facilitating subsequent assembly.

Description

[0001] This application is a divisional application of Chinese Patent Application No. 2024212743790, filed on June 5, 2024, entitled "A Nozzle Holding Mechanism". Technical Field

[0002] This utility model relates to the field of medical devices, and in particular to a nozzle holding mechanism. Background Technology

[0003] In existing nozzle structures, the elastic element used to fix the nozzle (nozzle) usually contacts the matching element to form a chamber that contains the medium. The quality of the sealing of this chamber directly affects the atomization effect of the nozzle.

[0004] To prevent damage to the high-pressure environment of the chamber caused by media leakage, a common method is to enhance sealing by setting an interference structure. For example, in Chinese patent CN 220917888 U, a protrusion is set in the middle of the mating part, and the chamber's sealing is improved by the interference fit between the protrusion and the lower end of the elastic element. However, this also raises a new problem: because the lower end of the elastic element is close to the nozzle, and the nozzle is a vulnerable part, it often collides with the protrusion during assembly and is damaged, resulting in adverse effects on the product's performance. Utility Model Content

[0005] The purpose of this invention is to provide a nozzle holding mechanism that improves the sealing structure of the chamber, ensuring airtightness while preventing damage to the nozzle assembly and improving product yield.

[0006] The purpose of this utility model is achieved by the following technical solution: a nozzle holding mechanism, including a matching part, a clamping part and an elastic part;

[0007] The outer edge of the matching part is provided with a protrusion, and the inner side of the protrusion is provided with a downwardly inclined slope; the clamping member is provided on the protrusion and forms a nozzle space with the matching part; the elastic member is provided in the nozzle space, and the bottom of the elastic member interferes with and seals the inclined surface, and the elastic member is used to hold the nozzle.

[0008] The aforementioned nozzle holding mechanism improves product yield by moving the protrusion to the edge and using a beveled surface to interfere with the elastic element, thus preventing damage during nozzle assembly. Furthermore, the beveled surface prevents the bottom of the elastic element from turning outward, which could lead to a decrease or failure in sealing performance, further enhancing sealing reliability. The outwardly moved protrusion also serves as a pre-positioning element, facilitating subsequent assembly.

[0009] In some embodiments, the angle between the inclined plane and the horizontal plane is 5°-45°.

[0010] In the above scheme, the inclined plane within this included angle range can better restrict the bottom of the elastic element from turning outward, while also increasing the amount of interference between the two, thus achieving a better sealing effect.

[0011] In some embodiments, the interference between the bottom of the elastic member and the inclined surface is 0.05mm-0.5mm.

[0012] In the above scheme, within this interference range, the bottom of the elastic element can be fully compacted with the inclined surface, ensuring the effectiveness and reliability of the seal.

[0013] In some embodiments, the protrusion has an inclined inner surface, the angle between the inner surface and the vertical plane being 0°-3°.

[0014] In the above scheme, within this included angle range, after the fitting is installed, the protruding inner side of the clamping fastener can be tightly attached to the outer side of the concave angle, thereby temporarily fixing the clamping fastener.

[0015] In some embodiments, the bottom outer periphery of the clamping member is provided with a concave corner;

[0016] When the concave angle is provided on the protrusion, the position of the clamping member is defined by the matching member, and there is a gap between the lower end of the nozzle and the inner bottom of the nozzle space.

[0017] In the above solution, the combination of concave and convex angles allows the clamping element to be pre-positioned at the top of the mating part, facilitating subsequent assembly. Furthermore, the reserved spacing design prevents the nozzle bottom from being squeezed and damaged during assembly. On the other hand, this spacing also serves as a buffer mechanism for each pressurized medium application, preventing instantaneous high pressure from damaging the nozzle's internal microstructure.

[0018] In some embodiments, the clamping member is welded to the mating member; or, the clamping member is provided with fasteners for securing it to the mating member.

[0019] In some embodiments, the matching member is provided with a channel communicating with the nozzle space, and a pre-filter is provided in the channel.

[0020] In the above solution, the pre-filter is used to intercept and cut off large particulate impurities, prevent nozzle clogging, and thus ensure the normal operation of the atomization function.

[0021] In some embodiments, the nozzle holding mechanism further includes a flow guiding member, the distal end of which is provided with a groove;

[0022] The matching component is disposed within the groove, and a sealing ring is provided between the matching component and the groove.

[0023] In some embodiments, a plane is provided between the protrusion and the inclined surface, and the plane and the inclined surface form a step at the connection point, thereby limiting the outward turning of the bottom of the elastic member.

[0024] In the above scheme, the step can further restrict the bottom of the elastic element from turning outward, improve the interference fit between the bottom of the elastic element and the inclined surface, and at the same time, the step can also form a new seal with the bottom of the elastic element, further enhancing the airtightness of the nozzle space.

[0025] In some embodiments, the bottom of the elastic element has an arc-shaped protrusion, which can form a surface seal and a line seal with the inclined surface and the step, respectively.

[0026] In the above scheme, the inclined surface and the step form a surface seal and a line seal. The two work together to effectively improve the sealing performance between the elastic element and the mating element.

[0027] This utility model also provides a nozzle structure, including the above-mentioned nozzle holding mechanism.

[0028] Compared with the prior art, the beneficial effects of this utility model include at least the following:

[0029] 1. This nozzle holding mechanism, by moving the protrusion to the edge and using an inclined surface to interfere with the elastic element, ensures airtightness while avoiding damage to the nozzle assembly and improving product yield.

[0030] 2. The bevel can prevent the bottom of the elastic element from turning outward, which would cause a decrease or failure in sealing performance and further improve the reliability of the seal.

[0031] 3. The outward-moving protrusions can serve as pre-positioning, facilitating subsequent assembly. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of a nozzle holding mechanism according to the present invention.

[0033] Figure 2 yes Figure 2 A schematic diagram of the local structural decomposition.

[0034] Figure 3 This is another structural schematic diagram of the nozzle holding mechanism of this utility model.

[0035] Figure 4 yes Figure 3 A schematic diagram of the local structural decomposition.

[0036] Figure 5 This is a three-dimensional schematic diagram of the nozzle structure of this utility model.

[0037] In the diagram: 1. Matching component; 11. Protrusion; 12. Inclined surface; 13. Channel; 14. Plane; 15. Step; 2. Pressing component; 21. Concave corner; 3. Elastic component; 31. Protrusion; 4. Nozzle; 5. Fastener; 6. Pre-filter; 7. Flow guide component; 71. Groove; 8. Sealing ring. Detailed Implementation

[0038] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided to make the present invention more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore repeated descriptions of them will be omitted.

[0039] The terms used to describe position and direction in this utility model are illustrated with the accompanying drawings, but changes can be made as needed, and all such changes are included within the scope of protection of this utility model.

[0040] This utility model discloses a nozzle holding mechanism, which can be installed in the flow guiding member 7 to form such a nozzle holding mechanism. Figure 5 The nozzle structure shown in this application is primarily used for nebulization therapy. For example, by atomizing medication and delivering it deep into the respiratory tract, it improves drug absorption efficiency, reduces drug degradation in the digestive system, and thus achieves better therapeutic effects. Furthermore, the nozzle structure can also be used in other fields such as cosmetics, humidification, and dust removal, without limitation.

[0041] See Figures 1 to 4 As shown, the nozzle holding mechanism includes a matching component 1, a clamping component 2, and an elastic component 3. The matching component 1, the elastic component 3, and the clamping component 2 are arranged sequentially from bottom to top, and the elastic component 3 is disposed within the nozzle space enclosed by the clamping component 2 and the matching component 1, serving to seal the nozzle space and hold the nozzle 4.

[0042] Specifically, the mating member 1 is configured to fit the shape of the flow guide member 7. For example, the mating member 1 can be a circular structure, thereby facilitating installation within the distal groove 71 of the flow guide member 7. Figure 2 or Figure 4 As shown, the outer edge of the matching part 1 is provided with a protrusion 11, which can be integrally formed with the matching part 1 and extends continuously in the circumferential direction.

[0043] In this application, the protrusion 11 is used to cooperate with the clamping fastener 2, serving a pre-positioning function during assembly. As an example, in Figure 1 or Figure 3In this design, a concave corner 21 is provided on the outer periphery of the bottom of the clamping member 2. When the concave corner 21 is located on the protrusion 11, the inner top of the concave corner 21 abuts against the upper end of the protrusion 11, and the outer side of the concave corner 21 abuts against the inner side of the protrusion 11. This allows the clamping member 2 to be pre-positioned at the top of the mating member 1, facilitating subsequent assembly. Furthermore, through the cooperation of the concave corner 21 and the protrusion 11, the clamping member 2 and the mating member 1 together enclose the nozzle space for containing the medium.

[0044] Furthermore, the inner side of the protrusion 11 is provided with a downwardly inclined surface 12, which is used to interfere with the elastic element 3 to ensure the airtightness of the nozzle space. As an example, in Figure 1 or Figure 3 In this design, the elastic element 3 is disposed within the nozzle space. The outer periphery of the elastic element 3 is fixed by the clamping fastener 2, while its bottom can interfere with and seal against the inclined surface 12. This ensures that the nozzle space can meet the high-pressure environment required for the operation of the nozzle 4, guaranteeing the normal operation of the nozzle 4 housed within the elastic element 3. Furthermore, since the inclined surface 12 on the matching element 1 slopes from the outside inward, this design can prevent the nozzle 4 from being damaged by collision during assembly and limit the reduction or failure of sealing performance caused by the outward folding of the bottom of the elastic element 3, thereby further improving the reliability of the seal.

[0045] In summary, this nozzle holding mechanism improves product yield by moving the protrusion 11 to the edge and using an inclined surface 12 to interfere with the elastic element 3, thus preventing damage during nozzle assembly. Furthermore, the inclined surface 12 prevents the bottom of the elastic element 3 from turning outward, which could lead to a decrease or failure in sealing performance, further improving sealing reliability. The moved protrusion 11 also serves as a pre-positioning element, facilitating subsequent assembly.

[0046] See Figure 2 and Figure 4 As shown, in some embodiments, the angle between the inclined plane 12 and the horizontal plane 14 is 5°-45°. Within this range, the inclined plane 12 can better restrict the outward turning of the bottom of the elastic element 3, while increasing the interference between the two, thus achieving a better sealing effect. Preferably, the angle between the inclined plane 12 and the horizontal plane 14 is 10°-30°, such as 20°, 22°, 24°, 30°, etc.

[0047] In some embodiments, the interference between the bottom of the elastic element 3 and the inclined surface 12 is 0.05mm-0.5mm. Within this range, the bottom of the elastic element 3 can be fully compacted with the inclined surface 12, ensuring the effectiveness and reliability of the seal. Preferably, the interference between the bottom of the elastic element 3 and the inclined surface 12 is 0.1mm-0.4mm, such as 0.2mm, 0.3mm, 0.4mm, etc.

[0048] In some embodiments, the protrusion 11 has an inclined inner side surface 111, the angle between the inner side surface 111 and the vertical plane being 0°-3°. This allows the inner side surface 111 of the protrusion 11 to fit tightly against the outer side surface of the concave corner 21 after the clamping fastener 2 is installed in the fitting, thereby temporarily fixing the clamping fastener 2. Preferably, the angle between the inner side surface 111 and the vertical plane is 1°-3°, for example, it can be 2° or 3°, etc.

[0049] See Figure 1 and Figure 3 As shown, in some embodiments, when the concave angle 21 is provided on the protrusion 11, there is a gap between the lower end of the nozzle 4 and the inner bottom of the nozzle space. By reserving a certain gap, the bottom of the nozzle 4 can be prevented from being squeezed and damaged during assembly. On the other hand, this gap can also serve as a buffer mechanism for each pressurized medium, preventing instantaneous high pressure from damaging the microstructure inside the nozzle 4.

[0050] In some embodiments, the clamping member 2 is welded to the mating member 1 (not shown). For example, the gap at the outer periphery where the clamping member 2 contacts the mating member 1 is fully welded to further improve the sealing of the nozzle space. Or, as... Figure 1 or Figure 3 As shown, the clamping member 2 is provided with a fastener 5 that secures it to the matching member 1. For example, the fastener 5 can be a threaded sleeve. The fastener 5 can be locked to the far end of the guide member 7 in a threaded connection, thereby securing the clamping member 2. By adjusting the fastener 5, the interference tightness between the elastic member 3 and the inclined surface 12 can be adjusted to ensure the best sealing effect.

[0051] In some embodiments, the matching component 1 is provided with a channel 13 communicating with the nozzle space. The channel 13 is coaxially arranged with the flow guide component 7 and is used to input the internal medium into the nozzle space. Under high pressure, the medium is atomized and released through the nozzle 4. Furthermore, a pre-filter 6 is provided in the channel 13, with a particle size range of less than or equal to 0.1 mm, to intercept and block large particulate impurities, prevent clogging of the nozzle 4, and thus ensure the normal operation of the atomization function.

[0052] Furthermore, a sealing ring 8 is provided between the matching part 1 and the groove 71. The sealing ring 8 can be an O-ring to improve the sealing between the two and prevent the media from leaking out and affecting the pre-filtration effect and the high-pressure environment in the nozzle space.

[0053] See Figure 3 and Figure 4As shown, in some embodiments, a plane 14 is provided between the protrusion 11 and the inclined surface 12. The plane 14 and the inclined surface 12 form a step 15 at the connection. Compared with the single inclined surface 12 restriction mechanism, the upward protruding step 15 can further restrict the bottom of the elastic member 3 from turning outward, improve the interference fit effect between the bottom of the elastic member 3 and the inclined surface 12, and at the same time, the step 15 can also form a new seal with the bottom of the elastic member 3, further enhancing the airtightness of the nozzle space.

[0054] Preferably, the bottom of the elastic element 3 has an arc-shaped protrusion 31, which can form a surface seal and a line seal with the inclined surface 12 and the step 15, respectively. The surface seal is the main seal, and the line seal is the secondary seal. The two work together to effectively improve the sealing performance between the elastic element 3 and the mating element 1.

[0055] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and alterations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention, and all such changes should fall within the protection scope of the claims of the present invention.

Claims

1. A nozzle retention mechanism characterized by, include: Matching part (1), which has an inclined surface (12) that slopes downward from the outside to the inside. A clamping element (2) is disposed on the matching element (1) and encloses it to form a nozzle space; An elastic element (3) is disposed within the nozzle space and its bottom interferes with and seals the inclined surface (12). The elastic element (3) is used to hold the nozzle (4).

2. The nozzle holding mechanism according to claim 1, characterized in that, The outer ring of the inclined surface (12) is provided with a step (15), which is used to limit the bottom of the elastic member (3) from turning outward.

3. The nozzle holding mechanism according to claim 2, characterized in that, The bottom of the elastic element (3) is provided with an arc-shaped protrusion (31), which can form a surface seal and a line seal with the inclined surface (12) and the step (15) respectively.

4. The nozzle holding mechanism according to claim 1, characterized in that, The angle between the inclined plane (12) and the horizontal plane is 5°-45°.

5. The nozzle holding mechanism according to claim 1, characterized in that, The angle between the inclined plane (12) and the horizontal plane is 10°-30°.

6. The nozzle holding mechanism according to claim 1, characterized in that, The interference between the bottom of the elastic element (3) and the inclined surface (12) is 0.05mm-0.5mm.

7. The nozzle holding mechanism according to claim 1, characterized in that, The interference between the bottom of the elastic element (3) and the inclined surface (12) is 0.1mm-0.4mm.

8. The nozzle holding mechanism according to claim 1, characterized in that, The clamping component (2) is welded and fixed to the matching component (1).

9. The nozzle holding mechanism according to claim 1, characterized in that, The clamping member (2) is provided with a fastener (5) for fastening it to the matching member (1).

10. The nozzle holding mechanism according to claim 8 or 9, characterized in that, It also includes a flow guide member (7), the distal end of which is provided with a groove (71). The matching part (1) is disposed in the groove (71), and a sealing ring (8) is disposed between the two.

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