A spray pump core protection device, a spray pump core and a spray pump
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN BONA MEDICINAL PACKAGING MATERIAL CO LTD
- Filing Date
- 2025-09-19
- Publication Date
- 2026-08-07
AI Technical Summary
[0003]为解决现有技术中喷雾泵的泵芯保护罩易脱落、使用寿命短的问题，本发明提出一种装配在螺丝盖上起保护喷雾泵芯的防护装置，通过新增结构来加强装配固定，有效防止脱落；通过在外筋上添加两条凸起的扣线，加强与内螺纹的配合，防止脱落；在螺丝盖非螺纹面设置外筋的尾台筋，尾台筋和非螺纹面形成过盈配合，增加受力接触面积，再次加强与螺丝盖的整体配合固定，达到加强防脱落的目的；
[0019] 1. This application overcomes the defect of easy loosening of existing protective covers due to single-point locking by using the structural feature of interference fit between double snap line and inner thread surface of screw cover, and achieves the technical effect of stable assembly and prevention of falling off;
Smart Images
Figure CN224599622U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of medical device technology, specifically relating to a spray pump core protection device, a spray pump core, and a spray pump. Background Technology
[0002] The existing protective cover for the pump core of the spray pump is prone to falling off during long-distance transportation when the spray pump inside the box is bumped and squeezed, thus failing to protect the pump core. In addition, the mating surfaces of the product assembly are simple, and it is easy to wear after repeated use, resulting in a short service life. Utility Model Content
[0003] To address the issues of easy detachment and short service life of the pump core protective cover in existing spray pump technologies, this invention proposes a protective device mounted on a screw cap to protect the spray pump core. This device strengthens the assembly and fixation through added structures, effectively preventing detachment. Two raised buckles are added to the outer rib to enhance the fit with the internal thread, preventing detachment. A tail rib is provided on the non-threaded surface of the screw cap, forming an interference fit with the non-threaded surface, increasing the contact area and further strengthening the overall fit and fixation with the screw cap, thus enhancing the anti-detachment effect.
[0004] This application provides a spray pump core protection device for surrounding and protecting the pump core, including a snap-fit head, a surrounding protective cylinder, and a snap-fit cover plate. The snap-fit cover plate is disposed between the snap-fit head and the surrounding protective cylinder. The outer wall of the snap-fit head is provided with an outer rib, and the upper part of the outer rib is provided with a double snap line. The double snap line is used to form an interference fit with the inner thread surface of the screw cap.
[0005] The lower end of the outer rib is connected to the cover plate and a tail rib is provided. The tail rib is used to abut against the non-threaded surface of the screw cover to form an interference fit.
[0006] This technical solution utilizes multi-point, multi-faceted contact and interference fit mechanisms to improve assembly stability and wear resistance; it significantly enhances the fixing strength of the pump core protective cover and screw cap, delaying the loosening problem caused by friction and wear, thereby solving the technical problems of easy detachment and short lifespan of the protective cover in the prior art, and achieving reliable protection for the spray pump under transportation and long-term use conditions.
[0007] The technical solution provided in this application also has the following technical features:
[0008] Preferably, in one embodiment of this application, the outer ribs are arranged in a ring array along the outer wall of the snap-fit cylinder head.
[0009] Preferably, in one embodiment of this application, the inner wall of the snap-fit head is provided with inner ribs for contacting the pump core.
[0010] Preferably, in one embodiment of this application, the surrounding protective cylinder is used to protect the liquid suction pipe of the pump core, and the surrounding protective cylinder includes a cylindrical section, a conical section I, and a conical section II connected in sequence.
[0011] Preferably, in one embodiment of this application, the cylindrical section surrounding the protective tube is provided with anti-slip texture.
[0012] Preferably, in one embodiment of this application, the double buckle wires radiate outward from the outer ribs towards the buckle head, and the cross-section of the double buckle wires is triangular, trapezoidal, or semi-circular.
[0013] Preferably, in one embodiment of this application, micro-protrusions or anti-slip textures are provided on the outward contact working surface of the outer rib to increase the friction with the non-threaded surface of the screw cap.
[0014] Preferably, in one embodiment of this application, the outer and inner ribs are provided with guide slopes to guide the pump core smoothly into the assembly process and avoid jamming.
[0015] Preferably, in one embodiment of this application, a spray pump core includes a pump core on which the above-mentioned spray pump core protective device is disposed.
[0016] Preferably, in one embodiment of this application, a spray pump includes a container, and the container is fitted with the aforementioned spray pump core.
[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
[0018] This application proposes a protective device mounted on a screw cap to protect the spray pump core, which has the following technical advantages:
[0019] 1. This application overcomes the defect of easy loosening of existing protective covers due to single-point locking by using the structural feature of interference fit between double snap line and inner thread surface of screw cover, and achieves the technical effect of stable assembly and prevention of falling off;
[0020] 2. This application overcomes the shortcomings of traditional protective covers in terms of small force-bearing area and weak impact resistance by adding a tail rib at the lower end of the outer rib and interfering with the non-threaded surface of the screw cover. It achieves the technical effect of enhancing overall fixation and impact resistance.
[0021] 3. This application overcomes the defects of easy jamming and insufficient friction during assembly by setting guide slopes and anti-slip textures on the outer and inner ribs, and achieves the technical effect of smooth assembly and tight bonding.
[0022] 4. This application overcomes the shortcomings of traditional protective covers in terms of insufficient protection for pump core suction pipes and short service life by using the segmented structure of the surrounding protective cylinder and the anti-slip texture design, and achieves the technical effect of improving the comprehensiveness and durability of protection. Attached Figure Description
[0023] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:
[0024] Figure 1 This is a perspective view of a spray pump core protection device according to this application;
[0025] Figure 2 This is a front view of a spray pump core protection device according to this application;
[0026] Figure 3 This is a top view of a spray pump core protection device according to this application;
[0027] Figure 4 This is a cross-sectional view of a spray pump core protection device according to this application;
[0028] Figure 5 This is a schematic diagram of the installation of a spray pump core protection device according to this application. Figure 1 ;
[0029] Figure 6 This is a schematic diagram of the installation of a spray pump core protection device according to this application. Figure 2 ;
[0030] Figure 7 This is a schematic diagram of the installation of a spray pump core protection device according to this application. Figure 3 ;
[0031] Figure 8 This is a schematic diagram of the installation of a spray pump core protection device according to this application. Figure 4 ;
[0032] Figure 9 This is a schematic diagram of a double-clamp interference fit for a spray pump core protection device according to this application;
[0033] Figure 10 This is a schematic diagram of the interference fit of the tail support rib of a spray pump core protection device according to this application;
[0034] Components in the diagram:
[0035] 100. Fastening the cylinder head
[0036] 101. External ribs
[0037] 1011, Double-buttoned thread
[0038] 1012. Weotaijiang
[0039] 102. Inner ribs
[0040] 200. Enclosed Protective Shell
[0041] 300. Cover the plate. Detailed Implementation
[0042] The specific embodiments of this application will be further described in detail below with reference to the accompanying drawings. These embodiments are only for illustrating this application and are not intended to limit the scope of this utility model.
[0043] In the description of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0044] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0045] Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0046] like Figure 1-4 A spray pump core protection device for surrounding and protecting the pump core includes a snap-fit head 100, a surrounding protective cylinder 200, and a snap-fit cover plate 300. The snap-fit cover plate 300 is disposed between the snap-fit head 100 and the surrounding protective cylinder 200. The outer wall of the snap-fit head 100 is provided with an outer rib 101, and the upper part of the outer rib 101 is provided with a double snap line 1011. The double snap line 1011 is used to form an interference fit with the inner thread surface of the screw cap.
[0047] The lower end of the outer rib 101 is connected to the cover plate 300 and a tail rib 1012 is provided. The tail rib 1012 is used to abut against the non-threaded surface of the screw cover to form an interference fit.
[0048] The key points of implementation of this application are as follows: During the manufacturing process, the snap-fit head 100, the surrounding protective cylinder 200, and the snap-fit cover plate 300 are integrally injection molded or separately assembled to ensure structural strength and assembly accuracy; the outer wall of the snap-fit head 100 is uniformly provided with outer ribs 101, and the upper part of the outer ribs 101 is provided with double snap lines 1011 to achieve a tight fit with the inner threaded surface of the screw cover; a tail rib 1012 is formed at the connection between the outer ribs 101 and the snap-fit cover plate 300, so that it is press-fitted with the non-threaded surface of the screw cover during assembly; the surrounding protective cylinder 200 is designed as a segmented cylinder according to the shape of the pump core to ensure that the pump core and the suction pipe are in a state of all-round protection, and anti-slip textures are added to the outer wall to facilitate manual operation and assembly.
[0049] The working principle or process of this application is as follows: During the assembly of the spray pump core and the screw cap, the snap-fit head 100 is inserted along the outer circumference of the pump core and enters the inner cavity of the screw cap. The double snap line 1011 on the outer rib 101 forms the first interference fit structure with the inner thread surface of the screw cap, thereby achieving axial locking. As the snap-fit head 100 is further advanced, the tail rib 1012 abuts against the non-threaded surface of the screw cap and generates radial pressure, forming the second interference fixing structure. Through the double locking of the double snap line and the tail rib, the vibration and impact during transportation and use can be effectively resisted, preventing the protective device from loosening. At the same time, the snap-fit head 100 protects the head of the pump core, i.e., the compression chamber, and the surrounding protective cylinder 200 surrounds and protects the liquid suction pipe of the pump core. While ensuring the normal operation of the pump core, it improves the stability and durability of the protective cover, and finally achieves long-term protection of the spray pump core in complex operating environments.
[0050] Specifically, in one embodiment of this application, the outer ribs 101 are arranged in a ring array along the outer wall of the snap-fit head 100; the inner wall of the snap-fit head 100 is provided with inner ribs 102 for contacting the pump core; the surrounding protective cylinder 200 is used to protect the suction pipe of the pump core, and the surrounding protective cylinder 200 includes a cylindrical section, a conical section I, and a conical section II connected in sequence; the cylindrical section of the surrounding protective cylinder 200 is provided with anti-slip textures; the double snap lines 1011 radiate outward from the snap-fit head 100 along the outer ribs 101, and the cross-section of the double snap lines 1011 is triangular, trapezoidal, or semi-circular; the outward contact working surface of the outer ribs 101 is provided with micro-protrusions or anti-slip textures to increase the friction with the non-threaded surface of the screw cap; the outer ribs 101 and the inner ribs 102 are provided with guide slopes to guide the pump core smoothly into the assembly process and avoid jamming;
[0051] The outer ribs 101 are distributed in a ring array on the outer wall of the snap-fit head 100, so that they form a uniform force contact with the inner wall of the screw cap during assembly, ensuring assembly stability. The inner ribs 102 set on the inner wall of the snap-fit head 100 form radial support and positioning with the outer surface of the pump core during the assembly process, preventing the pump core from shaking and improving the reliability of protection. The surrounding protective cylinder 200 adopts a segmented connection design of cylindrical section, conical section I and conical section II, which can balance structural strength and assembly smoothness, and is realized according to the volume space to reduce material usage. Anti-slip texture is added to the outer wall of the cylindrical section to facilitate the operator's grip during manual assembly or disassembly. The double snap lines of the outer ribs 101 1011 features radially outward protrusions, and its triangular, trapezoidal, or semi-circular cross-section design enhances the engagement stability with the threaded surface, thereby further improving the locking effect. Adding micro-protrusions or anti-slip textures to the working surface of the outer rib 101 significantly increases friction with the non-threaded surface of the screw cap, thus improving impact resistance and anti-loosening performance. Furthermore, the guide slopes of the outer rib 101 and inner rib 102 act as automatic guides during assembly, allowing the pump core to enter smoothly without jamming or damage caused by misalignment. This achieves a fast and reliable assembly process, ultimately enhancing the expected technical effects of increased fixing strength, improved durability, and ensured reliable pump core protection.
[0052] Specifically, in one embodiment of this application, a spray pump core includes a pump core on which the aforementioned spray pump core protective device is provided; a stable locking is formed by the snap-fit cylinder head 100 and the inner wall of the screw cap, so that the pump core is reliably positioned when installed at the container opening; at the same time, the inner rib 102 radially abuts against the outer surface of the pump core, so that the pump core remains stable during long-term use or transportation, and avoids loosening or displacement; the surrounding protective cylinder 200 provides all-round protection for the pump core's liquid suction pipe, preventing it from deforming or breaking under handling, collision or external pressure, thereby ensuring the continuity and stability of the spray function; in addition, the multiple interference fit structure provided by the outer rib 101 and the double snap-fit line 1011 significantly improves the bonding strength between the protective device and the screw cap, and can still maintain a good fixing effect under repeated opening and closing, vibration and long-term friction environment, thereby achieving the expected technical effect of long-term protection and stable spray output of the pump core under complex application conditions.
[0053] Specifically, in one embodiment of this application, a spray pump includes a container with the aforementioned spray pump core mounted thereon. The container's opening is fitted with a screw cap, and the spray pump core is mounted inside the screw cap. A protective device is fitted around the spray pump core. During use, the protective device achieves a secure lock on the pump core through an interference fit between the locking head 100 and the threaded surface of the screw cap (double locking line 1011), and a pressing contact between the tail rib 1012 and the non-threaded surface of the screw cap, ensuring the sealing and stability between the pump core and the container. Simultaneously, the surrounding protective sleeve 200 reliably protects the pump core's suction pipe, preventing damage caused by impact or compression during transportation and storage. This ensures that the spray pump maintains normal spray performance and durability even after long-term use, achieving the expected technical effect of improving the overall reliability and service life of the product.
[0054] Specifically, in one embodiment of this application, a double buckle line 1011 is provided on the outer rib 101 to strengthen the fit with the inner thread of the screw cover; a tail rib 1012 is provided on the non-threaded surface of the screw cover to make an interference fit with the non-threaded surface inside the screw cover, thereby increasing the contact area for force and further enhancing the overall fit and fixation with the screw cover.
[0055] like Figure 5-10 When in use, the pump core protective cover is snapped into the outside of the pump core from the bottom end of the spray pump tube, so that the double snap line 1011 of the protective cover is interference-fitted with the inner thread of the screw cover, and the tail rib 1012 is interference-fitted with the non-threaded surface inside the screw cover. When the end face of the protective cover is in contact with the end face of the screw cover, the assembly is completed, thereby achieving effective protection of the spray pump core.
[0056] In summary, this invention aims to solve the problems of easy detachment of the pump core protective cover, poor assembly stability, and short service life in existing spray pump technology. By setting an annular outer rib on the outer wall of the snap-fit cylinder head and forming a double snap line and a tail rib, an interference fit is achieved with the inner threaded surface and non-threaded surface of the screw cover. At the same time, guide slopes, anti-slip textures, and segmented protective structures are added to the inner rib and the surrounding protective cylinder, so that the pump core maintains a stable position and all-round protection during assembly, transportation, and long-term use. This significantly improves the fixing strength, impact resistance, and overall durability of the spray pump core, and achieves the technical effect of long-term reliable spray output of the spray pump.
[0057] By setting an annular outer rib on the outer wall of the snap-fit cylinder head and forming a double snap line 1011 and a tail rib 1012, the defects of the existing spray pump core protective cover being easy to loosen and having insufficient fixing force are overcome, and the technical effect of stable locking of the pump core and preventing it from falling off is achieved.
[0058] By using the structural feature of the inner rib 102 radially contacting the outer surface of the pump core, the defects of the pump core being prone to shaking and displacement during transportation and use are overcome, and the technical effect of reliable pump core positioning and stable assembly is achieved.
[0059] By using the structural features of a 200-segment connection and anti-slip texture design surrounding the protective sleeve, the defects of the pump core suction pipe being easily squeezed or damaged by external forces are overcome, achieving the technical effect of all-round protection and extended service life.
[0060] By using the guide slope design of the outer rib 101 and the inner rib 102, the problem of easy jamming of the pump core during assembly is overcome, and the technical effect of smooth assembly and convenient operation is achieved.
[0061] By employing a double interference fit and friction enhancement design, the shortcomings of traditional single-point fits in terms of weak impact resistance are overcome, achieving the technical effect that the spray pump can maintain stable spray output under long-term use and transportation conditions.
[0062] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.
Claims
1. A spray pump core protection device for surrounding and protecting the pump core, comprising a snap-fit head (100), a surrounding protective cylinder (200), and a cover plate (300), wherein the cover plate (300) is disposed between the snap-fit head (100) and the surrounding protective cylinder (200), characterized in that, The outer wall of the snap-fit head (100) is provided with an outer rib (101), and the upper part of the outer rib (101) is provided with a double snap line (1011). The double snap line (1011) is used to form an interference fit with the inner thread surface of the screw cap. The lower end of the outer rib (101) is connected to the cover plate (300) and a tail rib (1012) is provided. The tail rib (1012) is used to abut against the non-threaded surface of the screw cover to form an interference fit.
2. The spray pump core protection device as described in claim 1, characterized in that, The outer ribs (101) are arranged in a ring array along the outer wall of the snap-fit cylinder head (100).
3. The spray pump core protection device as described in claim 1, characterized in that, The inner wall of the snap-fit head (100) is provided with an inner rib (102) for contacting the pump core.
4. The spray pump core protection device as described in claim 1, characterized in that, The surrounding protective sleeve (200) is used to protect the suction pipe of the pump core. The surrounding protective sleeve (200) includes a cylindrical section, a conical section I, and a conical section II connected in sequence.
5. A spray pump core protection device as described in claim 1, characterized in that, The cylindrical section surrounding the protective sleeve (200) is provided with anti-slip texture.
6. A spray pump core protection device as described in claim 1, characterized in that, The double buckle line (1011) radiates outward from the outer reinforcing bar (101) towards the buckle head (100), and the cross-section of the double buckle line (1011) is triangular, trapezoidal or semi-circular.
7. A spray pump core protection device as described in claim 1, characterized in that, Micro-protrusions or anti-slip textures are provided on the outward contact working surface of the outer rib (101) to increase the friction with the non-threaded surface of the screw cap.
8. A spray pump core protection device as described in claim 1, characterized in that, The outer rib (101) and inner rib (102) are provided with guide slopes to guide the pump core smoothly into the assembly process and avoid jamming.
9. A spray pump core, characterized in that, It includes a pump core, and the pump core is provided with the spray pump core protection device according to any one of claims 1-8.
10. A spray pump, comprising a container, characterized in that, The container is equipped with the spray pump core as described in claim 9.