Aerosol bottom cover

Abstract

The utility model discloses an aerial fog bottom cover, which belongs to the field of bottom covers and comprises a bottom cover body, an arranged reinforcing mechanism is matched with the upper bottom cover body for use, and when a reinforcing plate is pressed into the bottom of the bottom cover body through a flaring arranged at the bottom of the bottom cover body, the bottom of the bottom cover body can be expanded to deform by utilizing a pressing and embedding ring on the outer wall. The pressing and embedding ring can enter the bottom cover body and then is embedded into the annular pressing and embedding groove, so that the reinforcing mechanism is installed on the bottom cover body to be used in cooperation with the bottom cover body in the aerosol can production process, and the reinforcing mechanism can serve as a part of the bottom cover body in cooperation with a structure formed by staggering of the upper top face rib ring and the rib plate; according to the bottom cover, a continuous supporting structure can be formed, the overall stability of the bottom cover body is enhanced, external pressure is effectively dispersed and resisted, deformation or breakage of the bottom cover body is prevented, the phenomenon of local stress concentration is reduced, and therefore the bearing capacity and the use strength of the bottom cover body can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of bottom cover, especially a kind of aerosol bottom cover. BACKGROUND

[0002] Aerosol cans are widely used in packaging various liquids, gases and their mixtures. According to the material classification, it is usually divided into aluminum aerosol cans and iron aerosol cans, which are common metal packaging containers in people's daily life. For iron aerosol cans, especially iron two-piece cans without weld seams, the can body is punched from a single continuous thin steel sheet, and the can body has high strength and is not easy to break.

[0003] The aerosol bottom cover is an important part of aerosol packaging, which is usually made of metal sheet through stamping forming technology, with specific shape and size. This bottom cover is generally designed to seal the bottom of the aerosol can, to ensure the stability and safety of the aerosol product in the can.

[0004] In the prior art, during transportation, storage and use of the aerosol can, the bottom cover is subjected to various external impacts and extrusions. Due to the lack of reinforcement measures for the bottom cover and the low strength of the bottom cover itself, the bottom cover is easily deformed, broken or even detached when resisting these external forces, which not only affects the sealing performance of the aerosol can, but also causes the leakage of the contents in the can, resulting in safety hazards. At the same time, during the use of the aerosol can, due to the lack of appropriate pressure relief measures for the bottom cover, the aerosol can may explode when the pressure is too high due to incorrect use, heat or other reasons, which not only damages the aerosol can itself, but also causes harm to the surrounding or users, thereby reducing the safety of the aerosol can during use. SUMMARY

[0005] The main purpose of the utility model is to provide an aerosol bottom cover, which can effectively solve the problems in the background art.

[0006] To achieve the above-mentioned purpose, the technical scheme adopted by the utility model is as follows:

[0007] An aerosol bottom cover, comprising a bottom cover body, a curled edge for riveting with the lower end of the can body of an aerosol can is arranged on the outer wall of the bottom cover body, a pressure relief mechanism is arranged on the bottom of the bottom cover body, and the pressure relief mechanism comprises a pressure relief pipe, an inner plate, a pressure relief piston and a compression spring, the pressure relief pipe is fixedly connected to the inner top surface of the bottom cover body, the inner plate is fixedly connected to the inside of the pressure relief pipe, the pressure relief piston is movably connected above the inner plate through a guide rod on the bottom, and the compression spring is sleeved outside the guide rod, an enhancing mechanism is further arranged in the bottom of the bottom cover body, and the enhancing mechanism comprises a reinforcing plate, a ring and a plate, the reinforcing plate is fixedly connected in the bottom surface of the bottom cover body through a press-in ring on the outer wall, a plurality of rings are fixedly connected to the top surface of the reinforcing plate, and a plurality of plates are fixedly connected between the rings in a staggered manner.

[0008] Further technical solutions, the inner top surface of the bottom cover body is fixedly installed with a communicating pressure relief pipe, and pressure relief holes are formed in the two sides of the outer wall of the pressure relief pipe.

[0009] Further technical solutions, the inner plate is fixedly installed below the inside of the pressure relief pipe, and a guide hole is formed in the top surface of the inner plate, a guide rod is fixedly installed on the bottom surface of the pressure relief piston, and the guide rod is inserted into the guide hole, a limiting disc is fixedly installed on the bottom end of the guide rod, and a compression spring is sleeved on the outside of the guide rod, the two ends of the compression spring are fixedly installed between the opposite surfaces of the pressure relief piston and the inner plate, and the pressure relief piston is tightly attached to the inner wall of the pressure relief pipe.

[0010] Further technical solutions, an arc-shaped flared portion is formed in the recessed portion of the bottom surface of the bottom cover body, and an annular pressing groove is further formed in the inner wall of the bottom portion of the bottom cover body and above the flared portion.

[0011] Further technical solutions, a pressing ring is fixedly installed on the outer wall of the reinforcing plate, and the pressing ring is embedded in the annular pressing groove in a pressing manner, a through hole is formed in the center of the top surface of the reinforcing plate, and the bottom end portion of the pressure relief pipe is inserted into the through hole, and a plurality of air release holes are further formed in the top surface of the reinforcing plate and outside the through hole.

[0012] Further technical solutions, a reinforcing ring is fixedly installed on the top surface of the reinforcing plate in a nested manner, and the diameter of the reinforcing ring gradually decreases from the outside to the inside, a plurality of reinforcing plates are further fixedly installed on the top surface of the reinforcing plate in an annular array manner and staggered with the reinforcing ring, and the curved top surface formed by the connection of the reinforcing ring and the reinforcing plate is tightly attached to the inner top surface of the bottom cover body.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] In the utility model, the reinforcing mechanism is set to cooperate with the use of the upper bottom cover body, the flared portion formed in the bottom portion of the bottom cover body is used to expand the bottom portion of the bottom cover body and deform when the reinforcing plate is pressed and installed in the bottom portion of the bottom cover body, the pressing ring on the outer wall can enter the inside of the bottom cover body and be embedded in the annular pressing groove, the reinforcing mechanism is installed in the bottom cover body during the production of the aerosol can to cooperate with the use of the bottom cover body, the structure formed by the staggered top surface reinforcing ring and reinforcing plate can be part of the bottom cover body and form a continuous supporting structure, the overall stability of the bottom cover body is enhanced to effectively disperse and resist external pressure, deformation or rupture is prevented, and local stress concentration is reduced, so that the bearing capacity and use strength of the bottom cover body are improved.

[0015] The pressure relief mechanism is matched with the use of the bottom cover body, when the pressure inside the can body of the aerosol can is too high, because the pressure relief piston is sealed in the pressure relief pipe, the pressure relief piston will move downwards under the extrusion of the pressure inside the can body, the guide rod on the bottom surface of the pressure relief piston will pass through the guide hole on the top surface of the inner plate, and force the compression spring between the pressure relief piston and the inner plate to make a contraction operation, as the pressure continues to increase, the sealing piston will continue to move downwards, until the sealing piston no longer blocks the pressure relief hole, the excess pressure inside the can body of the aerosol can will be discharged from the pressure relief hole and discharged to the outside through the air vent hole opened on the top surface of the reinforcing plate, so as to achieve the purpose of pressure relief, after the pressure decreases, the compression spring makes a recovery stretching operation and pushes the pressure relief piston to move upwards to reseal the pressure relief hole, so that the can body can be sealed, so that the bottom cover body has the function of pressure relief protection, avoiding the problem that the aerosol can explodes due to excessive pressure and causes damage and harm to personnel, thereby improving the safety of the aerosol can during use. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a whole structure schematic view of the utility model;

[0017] Figure 2 It is a whole structure sectional view schematic view of the utility model;

[0018] Figure 3 It is a sectional view schematic view of the bottom cover body of the utility model;

[0019] Figure 4 It is a structure split schematic view of the pressure relief mechanism of the utility model;

[0020] Figure 5 It is a whole structure schematic view of the reinforcing mechanism of the utility model.

[0021] In the drawing: 1, bottom cover body; 2, hem; 3, pressure relief mechanism; 4, reinforcing mechanism; 5, pressure relief pipe; 6, pressure relief hole; 7, flared; 8, annular pressure embedding groove; 9, inner plate; 10, guide hole; 11, pressure relief piston; 12, guide rod; 13, limit disc; 14, compression spring; 15, reinforcing plate; 16, pressure embedding ring; 17, through hole; 18, air vent hole; 19, ring; 20, rib plate. DETAILED DESCRIPTION

[0022] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model, obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the scope of protection of the utility model.

[0023] As Figure 1- Figure 5 As shown, an aerosol can bottom cover includes a bottom cover body 1. The outer wall of the bottom cover body 1 is provided with a rolled edge 2 for riveting to the lower end of the aerosol can body. The bottom of the bottom cover body 1 is provided with a pressure relief mechanism 3, which includes a pressure relief pipe 5, an inner plate 9, a pressure relief piston 11, and a compression spring 14. The pressure relief pipe 5 is fixedly connected to the inner top surface of the bottom cover body 1, and the inner plate 9 is fixedly connected to the inside of the pressure relief pipe 5. The pressure relief piston 11 is movably connected to the upper part of the inner plate 9 through a guide rod 12 on the bottom surface, and the compression spring 14 is sleeved on the outside of the guide rod 12. The bottom of the bottom cover body 1 is also provided with a reinforcing mechanism 4, which includes a reinforcing plate 15, rib rings 19, and rib plates 20. The reinforcing plate 15 is fixedly connected to the bottom surface of the bottom cover body 1 through a pressing ring 16 on the outer wall, and a number of rib rings 19 are fixedly connected to the top surface of the reinforcing plate 15. A number of rib plates 20 are fixedly connected to the rib rings 19 in an alternating manner.

[0024] like Figure 3 As shown, a pressure relief pipe 5 is fixedly installed on the inner top surface of the bottom cover body 1, and pressure relief holes 6 are respectively opened on both sides of the outer wall of the pressure relief pipe 5. Excess pressure in the aerosol can can be discharged through the pressure relief holes 6 opened on the pressure relief pipe 5.

[0025] like Figure 4 As shown, the inner plate 9 is fixedly installed inside the pressure relief pipe 5 at its lower part, and a guide hole 10 is provided on the top surface of the inner plate 9. A guide rod 12 is fixedly installed on the bottom surface of the pressure relief piston 11, and the guide rod 12 is inserted into the guide hole 10. A limit plate 13 is fixedly installed at the bottom end of the guide rod 12, and a compression spring 14 is sleeved on the outside of the guide rod 12. The two ends of the compression spring 14 are respectively fixedly installed between the pressure relief piston 11 and the opposing walls of the inner plate 9, and the pressure relief piston 11 is in close contact with the inner wall of the pressure relief pipe 5. When the pressure inside the aerosol can increases, the pressure relief piston 11 will move downward in the pressure relief pipe 5 under the influence of pressure. The guide rod 12 on the bottom surface of the pressure relief piston 11 will move along the guide hole 10 on the top surface of the inner plate 9, and the limiting plate 13 can prevent the guide rod 12 from moving out of the guide hole 10, thus playing a limiting role. At the same time, the pressure relief piston 11 will force the compression spring 14 to tighten until the pressure relief piston 11 no longer blocks the pressure relief hole 6. Then the gas in the aerosol can will be discharged through the pressure relief hole 6, and the internal pressure of the aerosol can will be reduced until the pressure inside the can can no longer push the pressure relief piston 11. Then the compression spring 14 will extend, pushing the pressure relief piston 11 to move upward and re-seal the pressure relief hole 6, so as to achieve the sealing of the gas inside the can.

[0026] like Figure 3 As shown, the bottom recess of the bottom cover body 1 is provided with an arc-shaped flared opening 7, and the bottom inner wall of the bottom cover body 1 and above the flared opening 7 is also provided with an annular pressing groove 8. The flared opening 7 and the annular pressing groove 8 are used to cooperate with the reinforcing plate 15 to achieve embedded pressing.

[0027] As Figure 5 shown, the outer wall of the reinforcing plate 15 is fixedly provided with a press-fit ring 16, and the press-fit ring 16 is press-fitted and installed in the annular press-fit groove 8. After the press-fit ring 16 is press-fitted into the annular press-fit groove 8, the reinforcing plate 15 can be press-fitted inside the bottom cover body 1. A through hole 17 is formed in the center of the top surface of the reinforcing plate 15, and the bottom end of the pressure relief pipe 5 is inserted and installed in the through hole 17, so that the reinforcing plate 15 can be smoothly installed and will not be blocked by the pressure relief pipe 5. A plurality of air vents 18 are formed in the top surface of the reinforcing plate 15 and outside the through hole 17, and the air vents 18 are used to discharge the gas discharged through the pressure relief hole 6 from the reinforcing mechanism 4.

[0028] As Figure 5 shown, the top surface of the reinforcing plate 15 is fixedly provided with a ring 19 in a nested manner, and the diameter of the ring 19 gradually decreases from outside to inside. The ring 19 is part of the bottom cover body 1 and can form a continuous support structure to enhance the overall stability of the bottom cover body 1. This structure is similar to a load-bearing wall in a building and can effectively disperse and resist external pressure. The top surface of the reinforcing plate 15 is also fixedly provided with a plurality of rib plates 20 in an annular array, which are staggered with the ring 19. The curved top surface formed after the connection of the ring 19 and the rib plate 20 is tightly abutted with the inner top surface of the bottom cover body 1. The structure formed by the staggered ring 19 and rib plate 20 can increase the rigidity and anti-deformation ability of the bottom cover body 1. When the bottom cover body 1 is subjected to external force, the ring 19 and the rib plate 20 can support the bottom cover body 1 like a skeleton to prevent it from deforming or breaking. At the same time, when subjected to external force, these structures can disperse stress to a larger area, thereby reducing the phenomenon of local stress concentration and improving the load-bearing capacity of the bottom cover body 1.

[0029] The specific use principle of the pressure relief mechanism 3 and the reinforcing mechanism 4 in cooperation with the bottom cover body 1 is as follows:

[0030] During the production process of the aerosol can, after the bottom cover body 1 is fixed to the bottom of the can body by the flange 2, the reinforcing plate 15 can be installed inside the bottom cover body 1. When the reinforcing plate 15 is press-fitted into the bottom of the bottom cover body 1 through the flared opening at the bottom of the bottom cover body 1, the press-fit ring 16 on the outer wall can cause the bottom of the bottom cover body 1 to expand and deform, so that the press-fit ring 16 can enter the inside of the bottom cover body 1 and be press-fitted into the annular press-fit groove 8 formed on the inner wall thereof. This facilitates the installation of the reinforcing mechanism 4 in the bottom of the bottom cover body 1 during the production process of the aerosol can.

[0031] When the aerosol can is in actual use, the curved top surface formed by the staggered connection of the top surface muscle ring 19 and the muscle plate 20 of the pressure-embedding ring 16 is tightly closed with the inner top surface of the bottom cover body 1, the muscle ring 19 can be used as a part of the bottom cover body 1 to form a continuous support structure, thereby enhancing the overall stability of the bottom cover body 1. This structure is similar to the load-bearing wall in the building, which can effectively disperse and resist external pressure. Meanwhile, the structure composed of the staggered muscle ring 19 and muscle plate 20 can increase the rigidity and anti-deformation ability of the bottom cover body 1. When the bottom cover body 1 is subjected to external force, the muscle ring 19 and muscle plate 20 can support the bottom cover like a framework to prevent it from deforming or rupturing. Meanwhile, when subjected to external force, these structures can disperse stress to a larger area to reduce the phenomenon of local stress concentration, thereby improving the carrying capacity and use strength of the bottom cover body 1.

[0032] Further, when the aerosol can is in actual use, the pressure relief piston 11 installed in the pressure relief pipe 5 will be pushed due to the influence of pressure caused by incorrect use, heating or other reasons. The pressure relief piston 11 will move downward in the inside of the pressure relief pipe 5. When moving, the guide rod 12 installed at the bottom surface of the pressure relief piston 11 will pass through the guide hole 10 opened at the top surface of the inner plate 9, and the pressure relief piston 11 will force the compression spring 14 externally sleeved with the guide rod 12 to perform a contraction operation. When the pressure relief piston 11 continuously moves downward under the influence of pressure and no longer covers the pressure relief hole 6 opened on the outer wall of the pressure relief pipe 5, the gas in the can body will be discharged through the pressure relief hole 6, enter the muscle ring 19 with the smallest diameter at the top surface of the reinforcing plate 15, and then be discharged to the outside through the air hole 18, so that the pressure in the can body gradually decreases. When the pressure in the can body decreases to a certain extent and cannot apply downward pressure to the pressure relief piston 11, the compression spring 14 will perform an elastic recovery and extension operation and push the pressure relief piston 11 to move upward until the pressure relief piston 11 reseals the pressure relief hole 6 to seal the gas in the can body, thereby enabling the bottom cover body 1 to have the pressure relief protection function, avoiding the problem that the aerosol can explodes due to excessive pressure and causes damage and harm to personnel, and further improving the safety of the aerosol can in use.

[0033] The basic principle and main features of the present application and the advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principle of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. An aerosol can bottom cover, comprising a bottom cover body (1), wherein the outer wall of the bottom cover body (1) is provided with a rolled edge (2) for riveting to the lower end of the body of an aerosol can, characterized in that: The bottom of the cover body (1) is provided with a pressure relief mechanism (3), and the pressure relief mechanism (3) includes a pressure relief pipe (5), an inner plate (9), a pressure relief piston (11), and a compression spring (14). The pressure relief pipe (5) is fixedly connected to the inner top surface of the cover body (1), and the inner plate (9) is fixedly connected to the inside of the pressure relief pipe (5). The pressure relief piston (11) is movably connected to the top of the inner plate (9) through a guide rod (12) on the bottom surface, and the compression spring (14) is sleeved on the inner plate (9). Outside the guide rod (12), a reinforcing mechanism (4) is also provided inside the bottom of the bottom cover body (1). The reinforcing mechanism (4) includes a reinforcing plate (15), a rib ring (19), and a rib plate (20). The reinforcing plate (15) is fixedly connected to the bottom surface of the bottom cover body (1) by a pressing ring (16) on the outer wall. Several rib rings (19) are fixedly connected to the top surface of the reinforcing plate (15). Several rib plates (20) are fixedly connected to the rib rings (19) in an alternating manner.

2. The aerosol bottom cover according to claim 1, characterized in that: The bottom cover body (1) has a pressure relief pipe (5) fixedly installed on the inner top surface, and pressure relief holes (6) are respectively opened on both sides of the outer wall of the pressure relief pipe (5).

3. The aerosol bottom cover according to claim 2, characterized in that: The inner plate (9) is fixedly installed inside the pressure relief pipe (5) and a guide hole (10) is provided on the top surface of the inner plate (9). A guide rod (12) is fixedly installed on the bottom surface of the pressure relief piston (11) and the guide rod (12) is inserted into the guide hole (10). A limit plate (13) is fixedly installed at the bottom end of the guide rod (12) and a compression spring (14) is sleeved on the outside of the guide rod (12). The two ends of the compression spring (14) are respectively fixedly installed between the opposite walls of the pressure relief piston (11) and the inner plate (9) and the pressure relief piston (11) is in close contact with the inner wall of the pressure relief pipe (5).

4. The aerosol bottom cover according to claim 3, characterized in that: The bottom recess of the bottom cover body (1) is provided with an arc-shaped flared opening (7), and the bottom inner wall of the bottom cover body (1) and above the flared opening (7) is also provided with an annular pressing groove (8).

5. The aerosol bottom cover according to claim 4, characterized in that: A pressure-fitting ring (16) is fixedly installed on the outer wall of the reinforcing plate (15), and the pressure-fitting ring (16) is embedded in the annular pressure-fitting groove (8) by pressing. A through hole (17) is opened at the center of the top surface of the reinforcing plate (15), and the bottom end of the pressure relief pipe (5) is inserted into the through hole (17). Several vent holes (18) are also opened on the top surface of the reinforcing plate (15) outside the through hole (17).

6. The aerosol bottom cover according to claim 5, characterized in that: The top surface of the reinforcing plate (15) is fixedly installed with a rib ring (19) in a nested manner, and the diameter of the rib ring (19) gradually decreases from the outside to the inside. The top surface of the reinforcing plate (15) is also fixedly installed with a number of rib plates (20) interlaced with the rib ring (19) in a ring array. The curved top surface formed by the connection of the rib ring (19) and the rib plate (20) is pressed tightly against the inner top surface of the bottom cover body (1).

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