Novel aerosol valve counter

Abstract

The utility model provides a novel aerosol valve counter which comprises a push button, an actuating rod, a worm, a ratchet wheel, a counting disc and an outer cover, a first unit is arranged on one side face of the push button, a second unit matched with the first unit is arranged on the outer cover, and a supporting assembly used for supporting the worm is formed. According to the utility model, the problems of displacement and falling caused by unstable rotation of the worm in the use process are prevented through the supporting assembly, and the counting accuracy is ensured to a certain extent; and meanwhile, an anti-rotation piece is arranged on the outer cover, so that the ratchet wheel is prevented from being driven to rotate when the actuating rod is reset, and the reliability of the counter is further ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to the packaging field especially is related to a novel aerosol valve counter. BACKGROUND

[0002] The aerosol valve counter is an aerosol dispenser with a counting function, which can display the total number of uses and the remaining number of uses of the dispenser to the user, facilitating the user to master the use of the liquid medicine.

[0003] The Chinese patent application with the publication number CN111860750A discloses an aerosol valve counting indicator. Each time the drug is administered, the pawl drives the ratchet wheel to rotate one tooth position, and then the worm meshing with the ratchet wheel drives the counting disc to rotate an angle, thereby changing the reading display of the counting disc on the shell window, that is, a mechanical counting structure is adopted to realize reliable and accurate counting function. However, the worm rotation is arranged on a C-shaped support frame, and since the ratchet wheel is arranged at one end of the worm, that is, the pawl acts on one end of the worm, the worm may be displaced or rotated during rotation, or even fall off, resulting in counting errors and part damage. SUMMARY

[0004] To solve the above problems, the utility model provides a novel aerosol valve counter.

[0005] The main content of the utility model comprises:

[0006] A novel aerosol valve counter, comprising a push button, an actuating rod, a worm, a ratchet wheel, a counting disc and an outer cover, wherein one side of the push button is provided with a sliding groove; the actuating rod has a cantilever extending towards the push button and an actuating pawl extending outward; the cantilever is arranged in the sliding groove; a sleeve is protruded on one side of the push button; the counting disc is rotatably arranged on the sleeve; the actuating pawl is clamped between the ratchet wheels; the ratchet wheels drive the counting disc to rotate through the worm; the two ends of the worm are rotatably arranged on a support assembly; the support frame comprises a first unit arranged on one side of the push button and a second unit arranged on the opposite side of the outer cover; the first unit and the second unit have a C-shaped support frame matched with each other.

[0007] Preferably, an anti-rotation member is arranged on the inner surface of the outer cover, which is used to prevent the ratchet wheel from rotating.

[0008] Preferably, the outer cover comprises a shell and a protective cover, the protective cover is arranged on the inner side of the shell, and the second unit is formed on the protective cover.

[0009] Preferably, the protective cover comprises a cover body and a mounting body extending inward along both sides of the inner surface of the cover body, and the second unit is formed on the mounting body.

[0010] Preferably, a window is formed on the cover body, and the ratchet wheel and the worm are located in the window when the cover body is arranged on the side of the push button.

[0011] Preferably, at least one protective rib is arranged in the window.

[0012] Preferably, a mounting window is formed on the cover body, and the cover body is sleeved on the sleeve through the mounting window.

[0013] Preferably, a protective wall is arranged on the edge of the inner surface of the cover body.

[0014] Preferably, a plurality of limiting ribs are arranged inwardly on the inner surface of the cover body.

[0015] Preferably, the shell is buckled with the push button.

[0016] The beneficial effects of the utility model lie in that the utility model provides a novel aerosol valve counter, a second unit matched with a first unit is arranged on an outer cover to form a supporting assembly for supporting a worm, prevents displacement and falling of the worm due to unstable rotation in use, and guarantees the accuracy of counting to a certain extent; meanwhile, an anti-rotation piece is arranged on the outer cover to avoid rotation of a ratchet wheel when a driving rod is reset, and further guarantees the reliability of the counter. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is Figure 1 It is a schematic diagram of the structure after removing the shell;

[0019] Figure 3 It is a schematic diagram of the structure of the protective cover;

[0020] REFERENCE SIGNS:

[0021] 1-push button; 11-sliding groove; 12-sleeve; 2-driving rod; 21-cantilever; 22-driving claw; 3-worm; 4-ratchet wheel; 5-counting disc; 6-outer shell; 60-observation window; 7-protective cover; 70-anti-rotation piece; 71-cover body; 710-window;

[0022] 711-Protective rib; 712-Installation window; 72-Installation body; 73-Limiting rib; 74-Protective wall; 8-Supporting component; 81-First unit; 82-Second unit. Detailed Implementation

[0023] The technical solution protected by this utility model will be described in detail below with reference to the accompanying drawings.

[0024] This utility model proposes a novel aerosol valve counter, which further ensures the reliability and accuracy of counting compared to existing counters. Specifically, as shown... Figure 1 As shown, the counter includes a push button 1, an actuating rod 2, a worm gear 3, a ratchet 4, a counting disk 5, and an outer cover. The push button 1 has a groove 11 on one side and a sleeve 12 protruding from that side. The actuating rod 2 has a cantilever 21 extending towards the push button 1 and an actuating claw 22 extending outwards. The actuating rod 2 slides up and down along the groove 11 via the cantilever 21. The counting disk 5 is fitted onto the sleeve 12 and can rotate around it. The ratchet 4 is connected to one end of the worm gear 3, which meshes with the counting disk 5. The outer surface of the counting disk 5 has graduations. An observation window 60 is provided on the outer cover at a position corresponding to the graduations on the counting disk 5, allowing the user to see the number of times the counter has been used and / or the total number of uses.

[0025] More specifically, the actuating pawl 22 engages with the ratchet 4. When the user presses the aerosol can or push button 1, causing relative movement between the two, the actuating rod 2 moves downward along the slide groove 11. The actuating pawl 22 pushes the ratchet 4 to rotate one tooth position, causing the ratchet 4 to drive the worm gear 3 to rotate, which in turn drives the counting disk 5 to rotate one scale.

[0026] To ensure the stability of the worm gear during rotation, this invention rotatably mounts both ends of the worm gear on a support assembly. The support assembly includes a first unit 81 located on one side of the push button and a second unit 82 located on the opposite side of the outer cover. Specifically, the first unit 81 is located below the sleeve 12 and has a C-shaped support frame. The second unit 82 is protruding from the inner surface of the outer cover and also has a C-shaped support frame that cooperates with the C-shaped support frame of the first unit 81. This allows both ends of the worm gear 3 to be positioned within the structure of the two C-shaped support frames, thereby preventing the worm gear 3 from shifting or even falling off during rotation.

[0027] More specifically, the outer cover includes an outer shell 6 and a protective cover 7. The protective cover 7 is disposed inside the outer shell 6. The outer cover can be assembled by molding the second unit 2 onto the protective cover 7 and then snapping the outer shell 6 onto the side of the push button 1. The outer cover is divided into two parts, the outer shell 6 and the protective cover 7, which makes installation easy. However, in order to ensure the stability of the protective cover 7, an installation window 712 is provided on the protective cover 7 so that the protective cover 7 can be placed on the sleeve 12 to achieve a certain positioning function.

[0028] Further, please refer to Figure 3 The protective cover 7 includes a cover body 71 and a mounting body 72 extending inward along both sides of the inner surface of the cover body 71, and the second unit 82 is formed on the mounting body 72. Meanwhile, the cover body 71 has a clearance window 710. When the cover body 71 is positioned on one side of the push button 1, the ratchet 4 and the worm gear 3 are located within the clearance window 710.

[0029] To ensure the overall strength of the protective cover 7, especially the supporting strength of the second unit 82, at least one protective rib 711 is provided inside the clearance window 710, such as... Figure 3 As shown, the protective reinforcement can be a longitudinally extending connecting reinforcement.

[0030] In one embodiment, in order to further avoid damage to internal components that may be caused by squeezing the outer cover during assembly, a plurality of limiting ribs 73 extend inward from the inner surface of the cover body 71 of the protective cover 7, so that when the outer shell 6 is closed, the protective cover 7 can resist the squeezing of other internal components by the outer shell 6 under the support of the limiting ribs 73.

[0031] In one embodiment, an anti-rotation component 70 is provided on the inner surface of the outer cover. Specifically, the anti-rotation component 70 is formed on the cover body 71. When the cover body 71 is assembled, the anti-rotation component is located below one tooth of the ratchet 4 to prevent the ratchet 4 from rotating.

[0032] In addition, a protective wall 74 is provided extending inward from the inner surface edge of the cover body 71, which can also play a protective role to a certain extent.

[0033] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A novel aerosol valve counter, comprising a push button, an actuating rod, a worm gear, a ratchet, a counting disc, and an outer cover, wherein the push button has a groove on one side; the actuating rod has a cantilever extending toward the push button and an actuating pawl extending outward, the cantilever being disposed within the groove; a sleeve protrudes from one side of the push button; the counting disc is rotatably mounted on the sleeve, the actuating pawl engaging with the ratchet, and the ratchet driving the counting disc to rotate via the worm gear; the outer cover is disposed outside the counting disc and has an observation window; characterized in that, The two ends of the worm gear are rotatably mounted on the support assembly. The support assembly includes a first unit disposed on one side of the push button and a second unit disposed on the opposite side of the outer cover. The first unit and the second unit have a cooperating C-shaped support frame.

2. The novel aerosol valve counter according to claim 1, characterized in that, The inner surface of the outer cover is provided with an anti-rotation component, which is used to prevent the ratchet from rotating.

3. A novel aerosol valve counter according to claim 1 or 2, characterized in that, The outer cover includes an outer shell and a protective cover, the protective cover being disposed inside the outer shell, and the second unit being formed on the protective cover.

4. A novel aerosol valve counter according to claim 3, characterized in that, The protective cover includes a cover body and a mounting body extending inward along both sides of the inner surface of the cover body, and the second unit is formed on the mounting body.

5. A novel aerosol valve counter according to claim 4, characterized in that, The cover body has a clearance window. When the cover body is positioned on one side of the push button, the ratchet and the worm gear are located within the clearance window.

6. A novel aerosol valve counter according to claim 5, characterized in that, The clearance window is provided with at least one protective rib.

7. A novel aerosol valve counter according to claim 4, characterized in that, The cover body has an installation window, and the cover body is fitted onto the sleeve through the installation window.

8. A novel aerosol valve counter according to claim 4, characterized in that, The inner surface edge of the cover body is provided with a protective wall extending inward.

9. A novel aerosol valve counter according to claim 4, characterized in that, The inner surface of the cover body has several limiting ribs extending inward.

10. A novel aerosol valve counter according to claim 3, characterized in that, The outer casing is connected to the push button buckle.

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