Safety lock structure of oil drum cover of oil drum

Abstract

The utility model discloses an oil drum cover safety lock structure of an oil drum. The oil drum cover safety lock structure comprises a fixed seat and an oil drum cover, the fixed seat comprises an annular main body and a locking block; a plurality of limiting fins spaced in the circumferential direction are arranged on the inner wall of a middle hole of the annular body, one ends of the limiting fins are connected and fixed to the inner wall, the other ends of the limiting fins are provided with abutting parts which are bent and warped upwards, and the abutting parts of the limiting fins are used for abutting against the outer wall of the root of an oil nozzle in a close fit mode; the lower end of the locking block is elastically connected to the top of the annular body, and the side face, close to the middle hole, of the locking block is provided with a ratchet part with a plurality of oblique teeth. The oil drum cover is used for being in threaded connection with an oil nozzle, and a circle of ratchet wheel capable of being meshed with the ratchet part is arranged on the periphery of the oil drum cover. By arranging the limiting fins with the abutting parts, the fixing base can be conveniently and rapidly clamped at the root of the oil nozzle in advance in a labor-saving mode, and then when the oil drum cover is covered, the ratchet part on the fixing base can be matched with the ratchet wheel on the oil drum cover to achieve the safe limiting and anti-disengaging effect, and the situation of accidental leakage is avoided.

Description

Technical Field

[0001] This utility model relates to the technical field of oil drums, and in particular to a safety lock structure for the lid of an oil drum. Background Technology

[0002] An oil drum is a storage device for oil. The lid of a typical oil drum is threaded onto the nozzle. However, existing oil drums often lack safety devices. In case of accidents, such as a child opening the lid or the lid automatically unscrewing due to vibration during transport, oil leakage can easily occur, creating a safety hazard.

[0003] Therefore, there are oil tanks with spill-proof and leak-proof features, such as the one disclosed in Chinese Patent CN 204872013 U. The oil tank lid is engaged with the oil tank via ratchet teeth, preventing it from being turned open in the opposite direction, thus effectively preventing children from opening the tank. Another example is the oil tank lid with a self-locking function disclosed in Chinese Patent CN 221164123 U. This lid also uses ratchet teeth and locking teeth to prevent the lid from rotating, effectively avoiding oil leakage.

[0004] However, in practice, both of the above solutions have the problem that the installation of the lid fixing seat is relatively difficult. For example, in the second solution, the limiting plate of the locking ring needs to be pressed with a tool to deform and squeeze into the oil nozzle.

[0005] Furthermore, there is a problem with the ratchet ring and ratchet gear easily stripping during the screw-on process of the oil drum cap. Utility Model Content

[0006] The purpose of this utility model is to provide a safety lock structure for the lid of an oil drum, which can solve the above-mentioned problem of difficult installation and has the advantages of convenient assembly and high security.

[0007] To achieve the above objectives, the solution of this utility model is:

[0008] A safety lock structure for an oil drum lid includes a fixing base and an oil drum lid;

[0009] The fixing base includes an annular body and a locking block;

[0010] The inner wall of the central hole of the annular body is provided with several circumferentially spaced limiting wing pieces. One end of the limiting wing piece is connected and fixed to the inner wall, and the other end has an upwardly bent and raised abutting part. The fixing seat is inserted from top to bottom through the central hole to the oil nozzle root of the oil drum. The abutting part of each limiting wing piece is used to tightly fit against the outer wall of the oil nozzle root.

[0011] The lower end of the locking block is elastically connected to the top of the annular body, and the side of the locking block near the central hole is provided with a ratchet portion with several helical teeth; the oil drum cover is used to be screwed onto the oil nozzle, and the outer circumference of the oil drum cover is provided with a ratchet gear that can mesh with the ratchet portion; when the oil drum cover is screwed onto the oil nozzle, the ratchet gear can rotate unidirectionally along the ratchet portion, and at the same time, the ratchet portion can prevent the oil drum cover from reversing and disengaging from the oil nozzle;

[0012] At least one positioning block is provided at the connection between the oil nozzle root and the oil drum; the annular body of the fixing seat has a positioning hole in the middle hole for the positioning block to pass through and be limited, and the positioning hole is located between adjacent limiting winglets.

[0013] Furthermore, the first oblique tooth of the ratchet portion is formed on the outermost edge of the locking block, and the plane of the first oblique tooth is the side surface of the locking block.

[0014] Furthermore, the outer wall of the nozzle root is also provided with a ring of limiting ribs; the abutting part of each limiting wing is located on the lower side of the limiting ribs.

[0015] Furthermore, the positioning blocks are two that are spaced apart.

[0016] Furthermore, the upper end of the locking block protrudes outward on the side away from the ratchet portion to form an operating part, and the top surface of the operating part is provided with anti-slip teeth.

[0017] Furthermore, the outer side of the annular body of the fixing base is provided with several gripping parts that are higher than the top surface of the annular body.

[0018] Furthermore, the limiting wing is fan-shaped, and the width of the end of the limiting wing near the inner wall is greater than the width of the abutting part at the other end.

[0019] Furthermore, the upper surface of the outer end of the abutment portion is also formed with a slope, which makes the outer end of the abutment portion thinner.

[0020] Furthermore, both the mounting base and the oil drum lid are made of plastic.

[0021] Furthermore, the limiting wing is generally inclined, with the end of the limiting wing near the oil nozzle being higher than the end near the inner wall.

[0022] By adopting the above technical solution, and by setting each limiting wing with abutment part, the fixing seat can be conveniently and quickly pre-installed at the root of the oil nozzle. When closing the oil drum lid, the ratchet part on the fixing seat can cooperate with the ratchet gear on the oil drum lid to achieve a safe limiting and anti-disengagement function, so that the oil drum lid will not be accidentally reversed and loosened. Only by manually prying open the locking block elastically connected to the ring body, so that the ratchet part disengages from the ratchet gear, can the oil drum lid be opened normally. This can effectively improve the safety of oil drum use and avoid accidental leakage. At the same time, the ratchet part on the fixing seat and the ratchet gear on the oil drum lid also form a child lock, which can prevent the oil drum lid from being unscrewed by children. Attached Figure Description

[0023] Figure 1 This is a perspective view of an embodiment of the present invention installed on an oil drum;

[0024] Figure 2 This is an exploded view of an embodiment of the present invention;

[0025] Figure 3 This is a top view of an embodiment of the present utility model;

[0026] Figure 4 This is a cross-sectional view of an embodiment of the present utility model;

[0027] Figure 5 This is a top view of the fixing base of an embodiment of the present invention.

[0028] Labeling description: Fixed seat 1, annular body 11, central hole 111, inner wall 1111, limiting wing 112, abutting part 1121, inclined surface 1122, positioning hole 113, locking block 12, ratchet part 121, first helical tooth 1211, operating part 122, anti-slip tooth 1221, gripping part 13, oil drum cap 2, ratchet 21, oil drum 3, oil nozzle 31, positioning block 32, limiting rib 33, oil pipe 4. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0030] like Figures 1 to 5 As shown in the figure, a safety lock structure for an oil drum lid in this embodiment includes a fixing base 1 and an oil drum lid 2.

[0031] The fixed base 1 includes an annular body 11 and a locking block 12.

[0032] The inner wall 1111 of the central hole 111 of the annular body 11 is provided with a number of circumferentially spaced limiting winglets 112. This embodiment takes eight limiting winglets 112 as an example for explanation.

[0033] Each limiting wing 112 has one end connected and fixed to the inner wall 1111, and the other end has an upwardly bent and raised abutment portion 1121; the fixing seat 1 can be inserted from top to bottom through the central hole 111 to the root of the oil nozzle 31 of the oil drum 3, and the abutment portion 1121 of each limiting wing 112 is used to tightly abut against the outer wall of the root of the oil nozzle 31; by setting the limiting wing 112, the fixing seat 1 can be snapped and fixed to the protruding root of the oil nozzle 31 of the oil drum 3, and at the same time An abutment portion 1121 is provided on the limiting wing 112. Each upward-curving abutment portion 1121 can form a conical hole in the middle of the central hole 111. This can guide each limiting wing 112 to expand outward during the insertion of the fixing seat 1, making it easier and more convenient to install and fix the fixing seat 1 and the root of the oil nozzle 31. After the fixing seat 1 is in place, each abutment portion 1121 can return to its original position and abut against the root of the oil nozzle 31 for limiting, resulting in a good fixing effect.

[0034] At least one positioning block 32 is provided at the connection between the base of the nozzle 31 and the oil drum 3; a positioning hole 113 is provided in the hole 111 of the annular body 11 of the fixing base 1 for the positioning block 32 to pass through and be limited, and the positioning hole 113 is located between adjacent limiting winglets 112. The positioning block 32 can facilitate the positioning and installation of the fixing base 1 and prevent it from rotating around the base of the oil drum 3.

[0035] The lower end of the locking block 12 is elastically connected to the top of the annular body 11, and the side of the locking block 12 near the central hole 111 is provided with a ratchet portion 121 with several helical teeth; the oil drum cover 2 is used to be screwed to the oil nozzle 31, and the outer periphery of the oil drum cover 2 is provided with a ratchet gear 21 that can mesh with the ratchet portion 121; when the oil drum cover 2 is screwed to the oil nozzle 31, the ratchet gear 21 can rotate unidirectionally along the ratchet portion 121, and at the same time, the ratchet portion 121 can restrict the oil drum cover 2 from reversing and disengaging from the oil nozzle 31.

[0036] Therefore, the safety lock structure of this embodiment, by setting each limiting wing 112 with abutment part 1121, can conveniently and quickly pre-install the fixing seat 1 at the root of the oil nozzle 31. Then, when closing the oil drum lid 2, the ratchet part 121 on the fixing seat 1 can cooperate with the ratchet gear 21 on the oil drum lid 2 to achieve a safe limiting and anti-disengagement function, so that the oil drum lid 2 will not be accidentally reversed and loosened. Only when the locking block 12 elastically connected to the annular body 11 is manually pried open, so that the ratchet part 121 disengages from the ratchet gear 21, can the oil drum lid 2 be opened normally. This can effectively improve the safety of the oil drum 3 during use and avoid accidental leakage.

[0037] like Figure 2 As shown, in this embodiment, an oil pipe 4 can be provided between the oil drum cover 2 and the oil nozzle 3. The oil pipe 4 can adopt an existing structure, and the oil drum cover 2 cooperates with the oil pipe 4 to seal the oil nozzle 3.

[0038] For example Figure 5 As shown, in this embodiment, the first helical tooth 1211 of the ratchet portion 121 in the reverse direction can be formed on the outermost edge of the locking block 12, and the plane of the first helical tooth 1211 is the side surface of the locking block 12. This improves the meshing effect between the ratchet portion 121 and the ratchet gear 21. When the locking block 12 contacts the ratchet gear 21, the first helical tooth 1211 can be inserted between any two helical teeth of the ratchet gear 21, effectively preventing slippage and loosening between the ratchet gear 21 and the ratchet portion 121.

[0039] For example Figure 4 As shown, in this embodiment, the outer wall of the root of the nozzle 31 may also be provided with a ring of limiting ribs 33; the abutting portion 1121 of each limiting wing 112 abuts against the lower side of the limiting ribs 33. This can improve the limiting and fixing effect of the root of the nozzle 31 on the fixing seat 1.

[0040] See Figure 5 The limiting wing 112 can be fan-shaped, with the width of one end of the limiting wing 112 near the inner wall 1111 being greater than the width of the other end abutting portion 1121. This ensures the structural strength of the limiting wing 112. Furthermore, the upper surface of the outer end of the abutting portion 1121 can also be formed with a slope 1122, which reduces the thickness of the outer end of the abutting portion 1121. This facilitates deformation of the abutting portion 1121 and makes installation easier.

[0041] The limiting wing 112 can be tilted as a whole, with the end of the limiting wing 112 near the oil nozzle 31 being higher than the end near the inner wall 1111. This also facilitates guidance during installation.

[0042] like Figure 2 As shown, in this embodiment, two spaced positioning blocks 32 are provided at the connection between the root of the nozzle 31 and the oil drum 3 to improve the positioning effect.

[0043] In this embodiment, an operating part 122 is formed by protruding outward from the side of the upper end of the locking block 12 away from the ratchet part 121, and the top surface of the operating part 122 is provided with anti-slip teeth 1221. This allows the user to easily press the operating part 122, thereby easily disengaging the locking block 12 and its ratchet part 121 from the ratchet gear 21 of the oil drum cover 2.

[0044] In this embodiment, the outer side of the annular body 11 of the fixing base 1 is also provided with several gripping parts 13 that are higher than the top surface of the annular body 11. This embodiment has three gripping parts to facilitate gripping the fixing base 1 for sleeve installation.

[0045] In this embodiment, both the fixing base 1 and the oil drum lid 2 are made of plastic. Of course, this is not a limitation.

[0046] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected by this utility model. It should be noted that for those skilled in the art, equivalent changes and modifications without departing from the principle of this utility model should still fall within the protection scope of this utility model.

[0047] In the description of the embodiments of this application, it should be understood that the indicated orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, or the orientations or positional relationships commonly used when the product is in use, or the orientations or positional relationships commonly understood by those skilled in the art. These are only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. In the description of this application, "a plurality of" and "several" mean two or more, unless otherwise explicitly specified.

Claims

1. A safety lock structure for an oil drum lid, characterized in that: Includes mounting bracket and oil drum lid; The fixing base includes an annular body and a locking block; The inner wall of the central hole of the annular body is provided with several circumferentially spaced limiting wing pieces. One end of the limiting wing piece is connected and fixed to the inner wall, and the other end has an upwardly bent and raised abutting part. The fixing seat is inserted from top to bottom through the central hole to the oil nozzle root of the oil drum. The abutting part of each limiting wing piece is used to tightly fit against the outer wall of the oil nozzle root. The lower end of the locking block is elastically connected to the top of the annular body, and the side of the locking block near the central hole is provided with a ratchet portion with several helical teeth; the oil drum cover is used to be screwed onto the oil nozzle, and the outer circumference of the oil drum cover is provided with a ratchet gear that can mesh with the ratchet portion; when the oil drum cover is screwed onto the oil nozzle, the ratchet gear can rotate unidirectionally along the ratchet portion, and at the same time, the ratchet portion can prevent the oil drum cover from reversing and disengaging from the oil nozzle; At least one positioning block is provided at the connection between the oil nozzle root and the oil drum; the annular body of the fixing seat has a positioning hole in the middle hole for the positioning block to pass through and be limited, and the positioning hole is located between adjacent limiting winglets.

2. The safety lock structure for an oil drum lid according to claim 1, characterized in that: The first oblique tooth of the ratchet portion is formed on the outermost edge of the locking block, and the plane of the first oblique tooth is the side surface of the locking block.

3. The safety lock structure for an oil drum lid according to claim 1, characterized in that: The outer wall of the nozzle root is also provided with a ring of limiting ribs; the abutting part of each limiting wing is located on the lower side of the limiting ribs.

4. The safety lock structure for an oil drum lid according to claim 1, characterized in that: The positioning blocks are two that are spaced apart.

5. The safety lock structure for an oil drum lid according to claim 1, characterized in that: The upper end of the locking block protrudes outward on the side away from the ratchet to form an operating part, and the top surface of the operating part is provided with anti-slip teeth.

6. The safety lock structure for an oil drum lid according to claim 1, characterized in that: The outer side of the annular body of the fixed base is also provided with several gripping parts that are higher than the top surface of the annular body.

7. The safety lock structure for an oil drum lid according to claim 1, characterized in that: The limiting wing is fan-shaped, and the width of the end of the limiting wing near the inner wall is greater than the width of the abutting part at the other end.

8. The safety lock structure for an oil drum lid according to claim 1, characterized in that: The upper surface of the outer end of the abutment portion is also formed with a slope, which makes the outer end of the abutment portion thinner.

9. The safety lock structure for an oil drum lid according to claim 1, characterized in that: Both the mounting base and the oil drum lid are made of plastic.

10. The safety lock structure for the lid of an oil drum according to claim 1, characterized in that: The limiting wing is inclined as a whole, with the end of the limiting wing near the oil nozzle being higher than the end near the inner wall.

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