A nebulizer
Patent Information
- Application Number
- CN202521956860.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-11
- Publication Date
- 2026-09-22
- Estimated Expiration
- 2035-09-11
AI Technical Summary
[0003]本申请的目的是提供一种喷雾器，解决下壳易脱落，喷雾器结构稳定性差的问题
[0006]本申请喷雾器采用将内壳的下端插装于下壳的内部的装配方式，并通过限位凸筋与限位凹槽的嵌合设计形成刚性配合，使得内壳和下壳在喷雾器的周向（转动方向）形成可靠约束。相较于相关技术依赖弹性卡接部传递驱动力，弹性卡接部可能因长时间承受周向扭矩发生变形甚至断裂，本申请喷雾器通过限位凸筋与限位凹槽的刚性配合优化驱动力传递路径，使得喷雾器壳体能够长期稳定承受转动时的作用力，显著提升喷雾器壳体的耐久性和结构稳定性，并且确保下壳转动时能精准带动内壳同步转动，避免卡接部断裂导致的触发失效，提高动力传递可靠性，确保喷雾器在长期使用中仍能稳定工作，显著优化喷雾器性能。
Smart Images
Figure CN224778368U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of sprayer technology, and specifically provides a sprayer. Background Technology
[0002] The related sprayer technology includes an inner shell and a lower shell, which are fixed together by an elastic locking part. When an external force is applied to the lower shell, causing it to rotate, the lower shell can drive the inner shell to rotate, thus triggering the sprayer to work. However, the driving force in this type of sprayer is transmitted through the elastic locking part between the inner and lower shells. After prolonged use, the elastic locking part may deform or even break, increasing the risk of the lower shell falling off, resulting in poor structural stability of the sprayer shell. Utility Model Content
[0003] The purpose of this application is to provide a sprayer that solves the problems of easy detachment of the lower shell and poor structural stability of the sprayer.
[0004] To solve the above-mentioned technical problems, this application provides a sprayer, including an inner shell and a lower shell, wherein the lower end of the inner shell is inserted into the interior of the lower shell, and the lower shell is configured to drive the inner shell to rotate, thereby triggering the sprayer to work;
[0005] The outer peripheral wall of the inner shell and the inner peripheral wall of the lower shell are provided with at least one limiting rib and at least one limiting groove, respectively. The limiting rib and the limiting groove extend along the axial direction of the sprayer, and the limiting rib is inserted into the corresponding limiting groove.
[0006] This application's sprayer employs an assembly method where the lower end of the inner shell is inserted into the interior of the lower shell. A rigid fit is formed through the interlocking design of the limiting ribs and limiting grooves, ensuring reliable constraint between the inner and lower shells in the circumferential (rotational) direction of the sprayer. Compared to related technologies that rely on elastic locking parts to transmit driving force, which may deform or even break due to prolonged circumferential torque, this application's sprayer optimizes the driving force transmission path through the rigid fit of the limiting ribs and limiting grooves. This allows the sprayer shell to stably withstand the forces during rotation over a long period, significantly improving the durability and structural stability of the sprayer shell. Furthermore, it ensures that the rotation of the lower shell precisely drives the synchronous rotation of the inner shell, preventing triggering failures caused by locking part breakage, improving power transmission reliability, ensuring stable operation of the sprayer during long-term use, and significantly optimizing sprayer performance.
[0007] Optionally, the inner shell and the lower shell are snapped together by an elastic snap-fit part, and the limiting rib and the limiting groove are disposed near the elastic snap-fit part and located on at least one side of the elastic snap-fit part.
[0008] Optionally, there may be multiple elastic snap-fit portions, which are distributed circumferentially along the sprayer.
[0009] Optionally, the elastic snap-fit portion includes an elastic snap-fit arm disposed on the inner shell, the outer wall of the elastic snap-fit arm having a snap-fit protrusion and a pressing portion; the elastic snap-fit portion also includes a snap-fit groove disposed on the lower shell, and a notch portion penetrating the inner and outer side walls of the lower shell, the notch portion penetrating the open end wall of the lower shell;
[0010] In the installed state, the snap-fit protrusion snaps into the snap-fit groove, and the pressing part protrudes from the inside of the notch outwards.
[0011] Optionally, the sprayer further includes a middle shell, which is fitted around the outer periphery of the inner shell, and the opposite end walls of the middle shell and the lower shell are in contact with each other;
[0012] The lateral width of the snap-fit protrusion that snaps into the snap-fit groove is d1, the maximum lateral width of the pressing part that extends out of the lower shell is d2, at least one of the outer wall of the lower shell and the outer wall of the middle shell is provided with a protrusion on the side of the pressing part, the maximum lateral width of the protrusion is d3, and d2-d3≤d1.
[0013] Optionally, the outer wall of the pressing part and the outer wall of the protrusion are in the same plane.
[0014] Optionally, the sprayer further includes a spring bracket installed inside the inner shell, the upper end wall of which is provided with an annular protrusion;
[0015] The sprayer also includes a spring, the lower axial end of which is fitted with the annular protrusion and abuts against the upper end wall of the spring bracket.
[0016] Optionally, the spring bracket further includes an annular portion, and the annular protrusion is disposed on the upper end wall of the annular portion;
[0017] The spring bracket also includes multiple connecting arms that are connected to the annular portion and extend upward. The connecting arms are engaged with the wall of the inner shell, and the inner wall of the connecting arms is provided with reinforcing ribs.
[0018] Optionally, the inner wall of the inner shell has one of a limiting protrusion and a limiting groove, and the outer wall of the annular portion has the other of the limiting protrusion and the limiting groove. The limiting protrusion and the limiting groove extend along the axial direction of the sprayer, and the limiting protrusion is circumferentially limited and installed in the limiting groove.
[0019] Optionally, the inner wall of the lower shell has a limiting boss, and the lower end wall of the inner shell and the lower end wall of the spring bracket both abut against the upper end wall of the limiting boss. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the shell structure in a specific embodiment of the sprayer provided in this application;
[0021] Figure 2 for Figure 1 A schematic diagram of the inner shell of a sprayer;
[0022] Figure 3 for Figure 1 Schematic diagram of the lower casing of the sprayer;
[0023] Figure 4 This is an axial sectional view of a specific embodiment of the sprayer provided in this application;
[0024] Figure 5 for Figure 1 A schematic diagram of the structure of region S1 in the sprayer;
[0025] Figure 6 for Figure 4 A schematic diagram of the S2 region in the sprayer;
[0026] Figure 7 for Figure 1 A schematic diagram of the spring bracket in a sprayer;
[0027] Figure 8 for Figure 1 A schematic diagram of the inner shell and spring bracket in a sprayer;
[0028] Figure 9 for Figure 1 A schematic diagram of the spring and spring bracket in a sprayer;
[0029] in, Figures 1-9 The accompanying figure labels are as follows:
[0030] 1-Inner shell; 11-Limiting rib; 12-Elastic snap-fit arm; 121-Snap-fit protrusion; 122-Pressing part; 13-Assembly hole; 14-Limiting protrusion; 15-Stepped wall;
[0031] 2-Lower shell; 21-Limiting groove; 22-Snap-fit groove; 23-Notch; 24-Limiting boss; 241-Upper wall of the limiting boss;
[0032] 3-Middle shell;
[0033] 4-Spring bracket; 41-Annular protrusion; 42-Annular part; 42a-Limiting groove; 43-Connecting arm; 431-Limiting buckle; 44-Reinforcing rib;
[0034] 5-Spring;
[0035] A - Flexible snap-fit part; B - Protrusion part. Detailed Implementation
[0036] To enable those skilled in the art to better understand the technical solutions of this application, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0037] Please refer to Figures 1-4 , Figure 1 This is a schematic diagram of the shell structure in a specific embodiment of the sprayer provided in this application; Figure 2 for Figure 1 A schematic diagram of the inner shell of a sprayer; Figure 3 for Figure 1 Schematic diagram of the lower casing of the sprayer; Figure 4 This is an axial cross-sectional view of a specific embodiment of the sprayer provided in this application.
[0038] This application provides a sprayer, including an inner shell 1 and a lower shell 2. The lower end of the inner shell 1 is inserted into the interior of the lower shell 2. The lower shell 2 is configured to drive the inner shell 1 to rotate, thereby triggering the sprayer to work.
[0039] The outer peripheral wall of the inner shell 1 and the inner peripheral wall of the lower shell 2 are provided with at least one limiting rib 11 and at least one limiting groove 21, respectively. The limiting rib 11 and the limiting groove 21 extend along the axial direction of the sprayer, and the limiting rib 11 is inserted into the corresponding limiting groove 21.
[0040] This application's embodiment of the sprayer employs an assembly method in which the lower end of the inner shell 1 is inserted into the interior of the lower shell 2. A rigid fit is formed through the interlocking design of the limiting rib 11 and the limiting groove 21, ensuring reliable constraint between the inner shell 1 and the lower shell 2 in the circumferential (rotational) direction of the sprayer. Compared to related technologies that rely on elastic locking parts to transmit driving force, which may deform or even break due to prolonged circumferential torque, this application's embodiment optimizes the driving force transmission path through the rigid fit of the limiting rib 11 and the limiting groove 21. This allows the sprayer shell to stably withstand the force during rotation over a long period, significantly improving the durability and structural stability of the sprayer shell. Furthermore, it ensures that the lower shell 2 can precisely drive the inner shell 1 to rotate synchronously, avoiding trigger failure caused by locking part breakage, improving power transmission reliability, ensuring stable operation of the sprayer during long-term use, and significantly optimizing sprayer performance.
[0041] Please continue to refer to this. Figures 2-4 In this embodiment of the application, the inner shell 1 and the lower shell 2 are fixed by the elastic snap-fit part A. The limiting rib 11 and the limiting groove 21 are disposed near the elastic snap-fit part A and are located on at least one side of the elastic snap-fit part A.
[0042] As described above, the limiting rib 11 and the limiting groove 21 are located close to the elastic snap-fit part A and at least on one side of the elastic snap-fit part A, so that the power transmission structure and the fixing structure are highly concentrated in the circumferential direction of the sprayer. This helps to reduce the number of parts in the injection mold, simplify the structure of the injection mold, reduce the manufacturing cost of the injection mold, and improve the stability of injection molding production.
[0043] Depend on Figure 2 and Figure 3 As can be seen, in this embodiment of the application, there are multiple elastic snap-fit parts A, and the multiple elastic snap-fit parts A are distributed along the circumference of the sprayer.
[0044] As described above, the multiple elastic locking parts A distributed circumferentially along the sprayer can evenly distribute the locking force between the inner shell 1 and the lower shell 2 to the entire circumference, improving the connection reliability between the inner shell 1 and the lower shell 2 and reducing the risk of the lower shell 2 falling off under drop test or collision compression conditions.
[0045] In some embodiments of this application, the number of elastic locking portions A is two, and the two elastic locking portions A are arranged opposite each other along the radial direction of the sprayer. In other embodiments of this application, the number of elastic locking portions A can be more than two.
[0046] Depend on Figure 2 and Figure 3 As can be seen, in this embodiment, each elastic snap-fit part A is provided with a power transmission structure with limiting ribs 11 and limiting grooves 21 on both sides. That is, this embodiment provides a power transmission structure with four limiting ribs 11 and limiting grooves 21, which evenly distributes the circumferential torque generated when the lower shell 2 rotates to multiple power transmission structures, reduces the force borne by a single power transmission structure, reduces the wear of each power transmission structure, and ensures the reliability of power transmission between the inner shell 1 and the lower shell 2.
[0047] Please continue to refer to this. Figure 2 and Figure 3 In this embodiment of the application, the elastic snap-fit part A includes an elastic snap-fit arm 12 disposed on the inner shell 1, the outer wall of the elastic snap-fit arm 12 having a snap-fit protrusion 121 and a pressing part 122; the elastic snap-fit part A also includes a snap-fit groove 22 disposed on the lower shell 2, and a notch 23 penetrating the inner and outer side walls of the lower shell 2, the notch 23 penetrating the open end wall of the lower shell 2.
[0048] In the installed state, the snap-fit protrusion 121 snaps into the snap-fit groove 22, and the pressing part 122 protrudes from the inside out through the inside of the notch 23.
[0049] As set above, in this embodiment of the application, the inner shell 1 and the lower shell 2 are fixed by the snap-fit of the snap-fit protrusion 121 and the snap-fit groove 22, ensuring that the connection between the inner shell 1 and the lower shell 2 along the axial direction is reliable; the pressing part 122 extends out from the inside of the notch 23 from the inside out, and the user can directly drive the elastic snap-fit arm 12 to deform inward by external pressing operation, so as to cause the snap-fit protrusion 121 to disengage from the snap-fit groove 22, quickly release the snap-fit fixation of the inner shell 1 and the lower shell 2, and improve the ease of loading and unloading the lower shell 2.
[0050] Depend on Figure 4 As can be seen, in this embodiment, there are two elastic snap-fit parts A, which are arranged opposite each other along the radial direction of the sprayer. When it is necessary to detach the lower shell 2, the user can easily press the two pressing parts 122 with one hand to detach the lower shell 2, which improves the ease of disassembly of the lower shell 2 while ensuring the reliable connection between the inner shell 1 and the lower shell 2.
[0051] Please refer to Figure 1 , Figure 5 and Figure 6 , Figure 5 for Figure 1 A schematic diagram of the structure of region S1 in the sprayer; Figure 6 for Figure 1 A schematic diagram of the structure of region S2 in the sprayer.
[0052] In this embodiment of the application, the sprayer also includes a middle shell 3, which is fitted around the outer periphery of the inner shell 1. The opposite end walls of the middle shell 3 and the lower shell 2 are in contact with each other. When the lower shell 2 drives the inner shell 1 to rotate, the middle shell 3 is in a relatively stationary state.
[0053] The lateral width of the snap-fit protrusion 121 that snaps into the snap-fit groove 22 is d1. The maximum lateral width of the pressing part 122 extending out of the lower shell 2 is d2. At least one of the outer wall of the lower shell 2 and the outer wall of the middle shell 3 has a protrusion B on the side of the pressing part 122. The maximum lateral width of the protrusion B is d3, and d2-d3≤d1.
[0054] In this embodiment, the pressing part 122 is used to release the snap-fit between the inner shell 1 and the lower shell 2. If it is accidentally touched or squeezed, the snap-fit protrusion 121 may disengage from the snap-fit groove 22, causing the connection between the inner shell 1 and the lower shell 2 to loosen or even separate. The protrusion B is located on the side of the pressing part 122. If the maximum lateral width d3 of the protrusion B is not less than the maximum lateral width d2 of the pressing part 122 extending out of the lower shell 2 (i.e., d2-d3≤0), when the sprayer is accidentally dropped and squeezed, the impact force will preferentially act on the protrusion B, preventing the impact force from being directly transmitted to the pressing part 122, thus avoiding the pressing part 122 being accidentally pressed and causing the locking protrusion 121 to disengage from the locking groove 22. If the maximum lateral width d3 of the protrusion B is less than the maximum lateral width d2 of the pressing part 122 extending out of the lower shell 2, when the sprayer is accidentally dropped and squeezed, the impact force will preferentially act on the pressing part 122, causing the elastic locking arm 12 to deform inward. When the outer wall of the pressing part 122 is flush with the outer wall of the protrusion B, the elastic locking arm 12... The deformation of the elastic snap-fit arm 12 is d2-d3. Since d2-d3≤d1, the snap-fit protrusion 121 has not yet disengaged from the snap-fit groove 22, thus preventing the lower shell 2 from accidentally disengaging and ensuring a reliable connection between the inner shell 1 and the lower shell 2.
[0055] Therefore, the addition of the protrusion B in this embodiment forms a false triggering structure, which effectively prevents the lower shell 2 from accidentally falling off, and significantly improves the safety and reliability of the sprayer.
[0056] Depend on Figure 1 As can be seen, in this embodiment of the application, the outer wall of the pressing part 122 and the outer wall of the protrusion B are in the same plane.
[0057] The coplanar design of the outer wall of the pressing part 122 and the outer wall of the protrusion B can avoid the formation of angular or stepped structures between the pressing part 122 and the protrusion B due to the height difference between them, thus optimizing the tactile feel when the user operates the pressing part 122 and improving the comfort during use.
[0058] like Figure 1 As shown in the embodiment of this application, the outer wall of the pressing part 122 and the outer wall of the protrusion B form a smooth and continuous curved surface, which is beneficial to further optimize the tactile sensation when the user operates the pressing part 122 and further improve the comfort during use.
[0059] like Figure 1 As shown in the embodiment of this application, both the outer wall of the lower shell 2 and the outer wall of the middle shell 3 are provided with protrusions B, and the two protrusions B are respectively located on both sides of the pressing part 122.
[0060] As described above, the two protrusions B can protect the pressing part 122 from both axial sides of the pressing part 122, further reducing the possibility of the pressing part 122 being triggered when the sprayer is accidentally dropped; at the same time, the two protrusions B are located on both axial sides of the pressing part 122, so when it is necessary to remove the lower shell 2, the user can easily remove the lower shell 2 by pressing the two pressing parts 122 with one hand, avoiding interference of the protrusions B with the pressing operation of the pressing part 122.
[0061] Please continue to refer to this. Figure 4 , Figures 7-9 , Figure 7 for Figure 1 A schematic diagram of the spring bracket in a sprayer; Figure 8 for Figure 1 A schematic diagram of the inner shell and spring bracket in a sprayer; Figure 9 for Figure 1 A schematic diagram of the spring and spring bracket in a sprayer.
[0062] In this embodiment of the application, the sprayer also includes a spring bracket 4 installed inside the inner shell 1, and the upper end wall of the spring bracket 4 is provided with an annular protrusion 41.
[0063] The sprayer also includes a spring 5, the lower axial end of which is fitted with an annular protrusion 41 and abuts against the upper end wall of the spring bracket 4.
[0064] As set up above, during the assembly of spring 5, the annular protrusion 41 can play a guiding role, improving the ease of assembly of spring 5; after assembly, the annular protrusion 41 can also play a limiting role for spring 5, reducing the risk of deformation of spring 5.
[0065] Please continue to refer to this. Figures 7-9 In this embodiment of the application, the spring bracket 4 further includes an annular portion 42, and an annular protrusion 41 is disposed on the upper end wall of the annular portion 42;
[0066] The spring bracket 4 also includes a plurality of connecting arms 43 connected to the annular portion 42 and extending upward. The connecting arms 43 are engaged with the wall of the inner shell 1, and the inner wall of the connecting arms 43 is provided with reinforcing ribs 44.
[0067] Depend on Figure 8 As can be seen, the inner shell 1 has multiple mounting holes 13 on its wall, and the outer wall of the connecting arm 42 has a limiting buckle 431 that protrudes outward in the transverse direction. The limiting buckle 431 is engaged with the corresponding mounting hole 13 to achieve the snap-fit fixation between the connecting arm 43 and the wall of the inner shell 1. Since the spring bracket 4 needs to continuously bear the spring force, this application provides a reinforcing rib 44 on the inner wall of the connecting arm 43, which is beneficial to improve the structural strength of the connecting arm 43 and reduce the risk of deformation or breakage caused by the spring force on the connecting arm 43.
[0068] Please continue to refer to this. Figure 9 In this embodiment of the application, the inner wall of the reinforcing rib 44 includes a planar wall portion and an inclined wall portion. The inclined wall portion is connected to the upper end of the planar wall portion and extends outwardly in a direction away from the planar wall portion.
[0069] As set up above, the inclined wall can play a guiding role during the assembly of spring 5, improving the assembly convenience of spring 5; after assembly, the reinforcing rib 44 can also play a limiting role on the outer periphery of spring 5, reducing the risk of deformation of spring 5.
[0070] Please continue to refer to this. Figure 2 and Figure 7 In this embodiment of the application, the inner wall of the inner shell 1 has one of a limiting protrusion 14 and a limiting groove 42a, and the outer wall of the annular portion 42 has the other of a limiting protrusion 14 and a limiting groove 42a. The limiting protrusion 14 and the limiting groove 42a extend along the axial direction of the sprayer, and the limiting protrusion 14 is circumferentially limited and installed in the limiting groove 42a.
[0071] As configured above, during the installation of the spring bracket 4 onto the inner shell 1, the limiting protrusion 14 and the limiting groove 42a can play a positioning role for the spring bracket 4, ensuring that the limiting buckle 431 of the connecting arm 43 and the assembly hole 13 can be smoothly engaged, improving the assembly convenience of the spring bracket 4. After assembly, the rigid fit of the limiting protrusion 14 and the limiting groove 42a makes the inner shell 1 and the spring bracket 4 reliably constrained in the circumference of the sprayer. When the inner shell 1 is subjected to force and rotates, the connecting arm 43 does not need to bear the circumferential torque. Instead, the rigid fit of the limiting protrusion 14 and the limiting groove 42a transmits the circumferential torque, reducing the possibility of deformation or even breakage of the connecting arm 43, improving the structural stability of the spring bracket 4, and improving the limiting reliability of the spring 5.
[0072] Depend on Figure 2 As can be seen from this embodiment, the inner wall of the inner shell 1 has a stepped wall 15 facing downwards, and a limiting protrusion 14 is disposed on the inner wall of the inner shell 1 and extends from the stepped wall 15 to the lower end wall of the inner shell 1; a limiting groove 42a is disposed on the outer wall of the annular portion 42 and penetrates the upper and lower end walls of the annular portion 42. In the installed state, the upper end wall of the annular portion 42 abuts against the stepped wall 15, and the stepped wall 15 can play a positioning role for the annular portion 42 during the installation of the spring bracket 4.
[0073] Please continue to refer to this. Figure 3 and Figure 4 In this embodiment of the application, the inner wall of the lower shell 2 has a limiting boss 24, and the lower end wall of the inner shell 1 and the lower end wall of the spring bracket 4 abut against the upper end wall 241 of the limiting boss 24.
[0074] As set above, the limiting boss 24 can limit the assembled spring bracket 4 and inner shell 1, improving the installation position accuracy of the spring bracket 4 and inner shell 1; at the same time, the limiting boss 24 can also help the spring bracket 4 bear the spring force of the spring 5, reducing the risk of deformation or breakage caused by the spring force on the spring bracket 4.
[0075] The above are merely preferred embodiments of this application. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this application, and these improvements and modifications should also be considered within the scope of protection of this application.
Claims
1. A sprayer, characterized in that, It includes an inner shell (1) and a lower shell (2), the lower end of the inner shell (1) is inserted into the interior of the lower shell (2), and the lower shell (2) is configured to drive the inner shell (1) to rotate in order to trigger the sprayer to work; The outer peripheral wall of the inner shell (1) and the inner peripheral wall of the lower shell (2) are provided with at least one limiting rib (11) and at least one limiting groove (21). The limiting rib (11) and the limiting groove (21) extend along the axial direction of the sprayer, and the limiting rib (11) is inserted into the corresponding limiting groove (21).
2. The sprayer according to claim 1, characterized in that, The inner shell (1) and the lower shell (2) are fixed by the elastic snap-fit part (A). The limiting rib (11) and the limiting groove (21) are arranged close to the elastic snap-fit part (A) and located on at least one side of the elastic snap-fit part (A).
3. The sprayer according to claim 2, characterized in that, The number of the elastic snap-fit parts (A) is multiple, and the multiple elastic snap-fit parts (A) are distributed circumferentially along the sprayer.
4. The sprayer according to claim 2, characterized in that, The elastic snap-fit part (A) includes an elastic snap-fit arm (12) disposed on the inner shell (1), the outer wall of the elastic snap-fit arm (12) having a snap-fit protrusion (121) and a pressing part (122); the elastic snap-fit part (A) also includes a snap-fit groove (22) disposed on the lower shell (2), and a notch (23) penetrating the inner and outer side walls of the lower shell (2), the notch (23) penetrating the open end wall of the lower shell (2); In the installed state, the snap-fit protrusion (121) snaps into the snap-fit groove (22), and the pressing part (122) protrudes from the inside of the notch (23) from the inside out.
5. The sprayer according to claim 4, characterized in that, The sprayer also includes a middle shell (3), which is fitted around the outer periphery of the inner shell (1), and the opposite end walls of the middle shell (3) and the lower shell (2) are in contact with each other; The lateral width of the snap-fit protrusion (121) that snaps into the snap-fit groove (22) is d1, the maximum lateral width of the pressing part (122) that extends out of the lower shell (2) is d2, at least one of the outer wall of the lower shell (2) and the outer wall of the middle shell (3) is provided with a protrusion (B) on the side of the pressing part (122), the maximum lateral width of the protrusion (B) is d3, and d2-d3≤d1.
6. The sprayer according to claim 5, characterized in that, The outer wall of the pressing part (122) and the outer wall of the protrusion (B) are in the same plane.
7. The sprayer according to any one of claims 1-6, characterized in that, The sprayer also includes a spring bracket (4) installed inside the inner shell (1), and the upper end wall of the spring bracket (4) is provided with an annular protrusion (41). The sprayer also includes a spring (5), the lower axial end of which is fitted with the annular protrusion (41) and abuts against the upper wall of the spring bracket (4).
8. The sprayer according to claim 7, characterized in that, The spring bracket (4) also includes an annular portion (42), and the annular protrusion (41) is disposed on the upper end wall of the annular portion (42); The spring bracket (4) also includes a plurality of connecting arms (43) that are connected to the annular portion (42) and extend upward. The connecting arms (43) are engaged with the wall of the inner shell (1), and the inner wall of the connecting arms (43) is provided with reinforcing ribs (44).
9. The sprayer according to claim 8, characterized in that, The inner wall of the inner shell (1) has one of a limiting protrusion (14) and a limiting groove (42a), and the outer wall of the annular portion (42) has the other of the limiting protrusion (14) and the limiting groove (42a). The limiting protrusion (14) and the limiting groove (42a) extend along the axial direction of the sprayer, and the limiting protrusion (14) is circumferentially limited and installed in the limiting groove (42a).
10. The sprayer according to claim 7, characterized in that, The inner wall of the lower shell (2) has a limiting boss (24), and the lower end wall of the inner shell (1) and the lower end wall of the spring bracket (4) abut against the upper end wall (241) of the limiting boss (24).