A car oil pan that allows for quick oil draining

Abstract

This utility model discloses a quick-draining automotive oil pan, relating to the field of automotive oil pans. It includes a pan body with an oil drain port inside. An oil drain assembly is fixedly connected to the lower end of the pan body, and the oil drain assembly is interlocked with the oil drain port. The oil drain assembly includes an outer ring, and an outer shell is fixedly connected to the upper end of the outer ring. Using this structure, oil enters through the drain port into the outer shell, then flows through the inlet groove into the drain hole, ultimately draining the engine oil. This eliminates the need for repeatedly tightening traditional threaded bolts; oil draining and sealing are completed simply by pulling and positioning the inner ring, significantly shortening the draining operation time. It is particularly suitable for rapid operations in maintenance and repair scenarios, avoiding leakage problems caused by bolt stripping and aging of the sealing ring in traditional threaded oil draining. The sliding fit between the drain column and the outer shell, combined with the fixing of the positioning assembly, maintains a stable sealing effect over a long period.

Description

Technical Field

[0001] This utility model belongs to the field of automotive oil pans, and specifically relates to an automotive oil pan that can quickly drain oil. Background Technology

[0002] The automotive oil pan, also known as the lower crankcase, is the lower half of the crankcase. Its function is to seal the crankcase as an outer shell for oil storage, preventing impurities from entering the oil storage tank, and collecting and storing the lubricating oil flowing back from the various friction surfaces of the diesel engine. Based on different structures, it can be divided into two types: wet oil pan and dry oil pan.

[0003] Chinese Patent No. CN220869491U discloses an automotive oil pan, comprising a main body, a fixing mechanism, and a sealing mechanism. The fixing mechanism is located on both sides of the main body, and the sealing mechanism is located below the main body. The main body includes a mounting plate, threaded holes, an upper housing, a lower housing, and an oil outlet. The mounting plate has a threaded hole on its upper surface. The upper end of the upper housing is fixedly connected to the lower end of the mounting plate, and the upper end of the lower housing is engaged with the lower end of the upper housing. The oil outlet is located in the lower housing. The fixing mechanism includes a first fixing block, a second fixing block, a fastening stud, a slotted block, a fixing plate, a handle, a moving groove, a limiting block, a sliding groove, a connecting rod, and a locking rod. The left side of the first fixing block is fixedly connected to the right side of the upper housing, and the first fixing block has a threaded hole inside. This automotive oil pan, with its mounting plate structure, facilitates installation.

[0004] The drain plugs on existing automotive oil pans are all connected by threads. When using them, the drain plug needs to be tightened repeatedly each time the oil is drained. If the bolt becomes rusted or the threads stick together after long-term use, it will not only greatly increase the difficulty of disassembly, but may even cause the bolt to strip or the oil pan threads to be damaged. In this case, the oil pan needs to be tapped and repaired or replaced directly, which significantly increases maintenance costs and time costs. Utility Model Content

[0005] In view of the problems mentioned in the background art, the purpose of this utility model is to provide an automotive oil pan that can quickly drain oil, so as to solve the problems mentioned in the background art.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0007] A quick-draining automotive oil pan includes a pan body with an oil drain port inside. An oil drain assembly is fixedly connected to the lower end of the pan body and is inserted into the oil drain port. The oil drain assembly includes an outer ring, an outer shell fixedly connected to the upper end of the outer ring, and the outer shell is inserted into the oil drain port. An oil drain column is slidably inserted into the inner part of the outer shell, and an inner ring is fixedly connected to the lower end of the oil drain column. Positioning components are provided on opposite sides of the inner and outer rings. An oil inlet groove is formed on the surface of the outer shell, and an oil drain hole is formed inside the oil drain column.

[0008] As a preferred technical solution, the positioning component includes snap-fit ​​frames disposed on both sides of the lower end of the outer ring, each snap-fit ​​frame having snap-fit ​​holes on its outer side, and a snap-fit ​​block fixedly connected to the upper end of the inner ring, the snap-fit ​​block being inserted into the snap-fit ​​frame.

[0009] As a preferred technical solution, the outer side of each snap-fit ​​block is provided with a circular groove, and a snap-fit ​​spring is fixedly connected inside the circular groove. The other end of the snap-fit ​​spring is fixedly connected to a snap-fit ​​connector, and the snap-fit ​​connector and the snap-fit ​​hole snap-fit ​​into each other.

[0010] As a preferred technical solution, release springs are fixedly connected to both sides of the snap-fit ​​hole on the outer side of the snap-fit ​​frame, and a pressing plate is fixedly connected to the other end of the release spring. A release block is fixedly connected to the inner side of the pressing plate, and the release block is inserted into the snap-fit ​​hole.

[0011] As a preferred technical solution, the upper end of the oil draining column is slidably inserted into the interior of the outer shell, a sealing ring is fixedly connected to the upper end of the oil draining column, and a sealing groove is provided inside the outer shell, with the sealing groove and the sealing ring mutually sealingly inserted into each other.

[0012] As a preferred technical solution, a first sealing sleeve is fitted onto the outer side of the outer shell, the first sealing sleeve is movably connected to the inner side of the oil drain port, and a second sealing sleeve is fixedly connected to the outer surface of the oil drain column, the second sealing sleeve being slidably connected to the inner side of the outer shell.

[0013] As a preferred technical solution, the outer side of the oil draining column is slidably connected to the inner side of the outer shell, a limiting groove is formed on the inner side of the outer shell, a limiting slider is fixedly connected to the outer side of the oil draining column, and the limiting slider and the limiting groove are slidably connected to each other.

[0014] In summary, the present invention has the following main advantages:

[0015] First, when oil needs to be drained, the inner and outer rings are released from their fixed state by using the positioning component. Then, the inner ring is pulled down, causing the drain column fixed to it to slide down inside the outer shell. At this time, the drain hole inside the drain column will gradually align with the oil inlet groove on the surface of the outer shell. The oil in the oil pan body enters the outer shell through the drain port, and then flows into the drain hole through the oil inlet groove, thus achieving oil drainage. There is no need to repeatedly tighten the traditional threaded bolts. Oil drainage and sealing can be completed simply by pulling and positioning the inner ring, which greatly shortens the oil drainage operation time. It is especially suitable for quick operations in maintenance scenarios and avoids the leakage problems caused by bolt stripping and aging of the sealing ring in traditional threaded oil drainage. The sliding fit between the drain column and the outer shell, combined with the fixation of the positioning component, can maintain a stable sealing effect for a long time.

[0016] Secondly, by inserting the snap-fit ​​block into the snap-fit ​​frame, the snap-fit ​​connector is squeezed into the circular groove during insertion. After the snap-fit ​​block is fully inserted into the snap-fit ​​frame, the position of the snap-fit ​​hole is aligned with the position of the circular groove. At this time, the snap-fit ​​connector will pop out of the circular groove under the action of the snap-fit ​​spring, so that the snap-fit ​​connector and the snap-fit ​​hole can be snapped together, thus achieving the snap-fit ​​effect. Through the engagement of the snap-fit ​​connector and the snap-fit ​​hole, the inner ring and the outer ring are fixed, thereby keeping the oil drain column in a sealed position inside the outer shell and preventing oil leakage. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the oil draining component of this utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the outer shell of this utility model;

[0020] Figure 4 This is a structural schematic diagram of the positioning component of this utility model.

[0021] Reference numerals: 1. Bottom shell body; 2. Oil drain port; 3. Oil drain assembly; 31. Outer ring; 32. Outer shell; 33. Inner ring; 34. Oil drain column; 35. Oil drain hole; 36. Oil inlet groove; 4. Positioning assembly; 41. Snap-fit ​​frame; 42. Snap-fit ​​hole; 43. Snap-fit ​​block; 44. Circular groove; 45. Snap-fit ​​spring; 46. Snap-fit ​​connector; 5. First sealing sleeve; 6. Second sealing sleeve; 7. Sealing ring; 8. Sealing groove; 9. Limiting slide groove; 10. Limiting slider; 11. Release spring; 12. Pressing plate; 13. Release block. Detailed Implementation

[0022] Example

[0023] refer to Figures 1 to 4This embodiment of a car oil pan with rapid oil drain capability includes a pan body 1, an oil drain port 2 inside the pan body 1, an oil drain assembly 3 fixedly connected to the lower end of the pan body 1, the oil drain assembly 3 and the oil drain port 2 being inserted into each other, the oil drain assembly 3 includes an outer ring 31, an outer shell 32 fixedly connected to the upper end of the outer ring 31, the outer shell 32 and the oil drain port 2 being inserted into each other, an oil drain column 34 slidably inserted inside the outer shell 32, an inner ring 33 fixedly connected to the lower end of the oil drain column 34, a positioning assembly 4 provided on the opposite side of the inner ring 33 and the outer ring 31, an oil inlet groove 36 opened on the surface of the outer shell 32, and an oil drain hole 35 opened inside the oil drain column 34.

[0024] refer to Figures 2-4 The positioning component 4 includes snap-fit ​​frames 41 disposed on both sides of the lower end of the outer ring 31. Snap-fit ​​holes 42 are provided on the outer sides of each snap-fit ​​frame 41. A snap-fit ​​block 43 is fixedly connected to the upper end of the inner ring 33. The snap-fit ​​block 43 is inserted into the snap-fit ​​frame 41. A circular groove 44 is provided on the outer side of each snap-fit ​​block 43. A snap-fit ​​spring 45 is fixedly connected inside the circular groove 44. A snap-fit ​​connector 46 is fixedly connected to the other end of the snap-fit ​​spring 45. The snap-fit ​​connector 46 snaps into the snap-fit ​​hole 42. By inserting the snap-fit ​​block 43 into the snap-fit ​​frame 41, the snap-fit ​​connector 46 is squeezed into the circular groove 44 during insertion. After the snap-fit ​​block 43 is fully inserted into the snap-fit ​​frame 41, the position of the snap-fit ​​hole 42 aligns with the position of the circular groove 44. At this time, the snap-fit ​​connector 46 will pop out of the circular groove 44 under the action of the snap-fit ​​spring 45, allowing the snap-fit ​​connector 46 to snap into the snap-fit ​​hole 42, thus achieving the snap-fit ​​effect and preventing oil leakage.

[0025] refer to Figure 3 Release springs 11 are fixedly connected to both sides of the snap-fit ​​frame 41 on both sides of the snap-fit ​​hole 42. A pressing plate 12 is fixedly connected to the other end of the release spring 11. A release block 13 is fixedly connected to the inner side of the pressing plate 12. The release block 13 is inserted into the snap-fit ​​hole 42. By pressing the pressing plate 12 inward, the release block 13 moves into the snap-fit ​​hole 42. After the release block 13 enters the snap-fit ​​hole 42, it can squeeze out the snap-fit ​​connector 46. After the snap-fit ​​connector 46 is disengaged from the snap-fit ​​hole 42, the positioning component 4 can be easily disassembled to achieve the oil draining effect.

[0026] refer to Figure 3 and Figure 4The upper end of the drain column 34 is slidably inserted into the interior of the outer shell 32. A sealing ring 7 is fixedly connected to the upper end of the drain column 34. A sealing groove 8 is provided inside the outer shell 32. The sealing groove 8 and the sealing ring 7 are mutually sealed and inserted. When the drain assembly 3 is in a sealed state, the upper end of the drain column 34 is tightly slidably inserted into the interior of the outer shell 32, and the sealing ring 7 fixed at the upper end of the drain column 34 is completely embedded in the sealing groove 8 provided inside the outer shell 32. The contact surface between the sealing ring 7 and the sealing groove 8 is used to block the oil flow path and prevent oil from leaking from the gap between the drain column 34 and the outer shell 32.

[0027] refer to Figure 2 and Figure 4 A first sealing sleeve 5 is fitted onto the outer side of the outer shell 32, and the first sealing sleeve 5 is movably connected to the inner side of the oil drain port 2. A second sealing sleeve 6 is fixedly connected to the outer surface of the oil drain column 34, and the second sealing sleeve 6 is slidably connected to the inner side of the outer shell 32. At the connection between the outer shell 32 and the oil drain port 2, the first sealing sleeve 5 fitted onto the outer side of the outer shell 32 is tightly and movably connected to the inner side of the oil drain port 2. The elastic deformation of the first sealing sleeve 5 fills the gap between the two, preventing oil leakage from the mating point between the outer shell 32 and the oil drain port 2, forming an outer sealing barrier. The second sealing sleeve 6, which is fixed to the outer surface of the oil drain column 34, is slidably connected to the inner side of the outer shell 32 at the internal mating part of the housing 32. When the oil drain column 34 slides up and down along the inner wall of the outer shell 32, the second sealing sleeve 6 always fits against the inner wall of the outer shell 32. This not only prevents oil from leaking out from the gap between the oil drain column 34 and the inner side of the outer shell 32, but also does not affect the sliding operation of the oil drain column 34, forming an inner sealing barrier. The cooperation of the double sealing sleeves can continuously block the oil leakage path and ensure sealing reliability, whether the oil drain assembly 3 is in a sealed static state or in an oil drain sliding state.

[0028] refer to Figure 3 and Figure 4The outer side of the oil drain column 34 is slidably connected to the inner side of the outer shell 32. A limiting groove 9 is provided on the inner side of the outer shell 32. A limiting slider 10 is fixedly connected to the outer side of the oil drain column 34. The limiting slider 10 and the limiting groove 9 are slidably connected to each other. Since the outer side of the oil drain column 34 and the inner side of the outer shell 32 need to maintain a sliding connection to achieve the switching between oil draining and sealing, the limiting groove 9 provided on the inner side of the outer shell 32 and the limiting slider 10 fixed on the outer side of the oil drain column 34 form a precise fit. When the oil drain column 34 is pulled or pushed, the limiting slider 10 will slide synchronously along the track of the limiting groove 9, which on the one hand facilitates the movement of the oil drain column 34. Provides clear guidance to prevent it from deviating, getting stuck or rotating during sliding, ensuring that the oil drain column 34 always moves stably in the preset direction, thereby ensuring that components such as the sealing ring 7 and the second sealing sleeve 6 can accurately dock with the corresponding structure. On the other hand, the two ends of the limiting slide groove 9 form the stroke endpoints. When the limiting slider 10 slides to the two ends of the slide groove, it will be blocked and unable to continue moving, thereby limiting the maximum sliding distance of the oil drain column 34 and preventing problems such as the oil drain column 34 detaching from the outer shell 32 or misalignment of the sealing structure due to excessive pulling or pushing. This ensures both operational safety and maintains the structural stability of the overall oil drain assembly 3.

[0029] Operating principle and advantages: The oil drain assembly 3 is installed on the bottom housing 1 for normal use. During oil draining, the positioning assembly 4 releases the inner ring 33 from the outer ring 31. Then, pulling down the inner ring 33 causes the drain column 34, which is fixed to it, to slide down inside the outer housing 32. At this time, the drain hole 35 inside the drain column 34 gradually aligns with the oil inlet groove 36 on the surface of the outer housing 32. The engine oil in the bottom housing 1 then enters the outer housing 32 through the drain port 2, and flows into the drain hole 35 through the oil inlet groove 36, ultimately achieving oil drainage. This eliminates the need for repeatedly tightening traditional threaded bolts; oil draining and sealing are completed simply by pulling and positioning the inner ring 33, significantly shortening the oil draining operation time. It is especially suitable for rapid maintenance and repair scenarios. This operation avoids the leakage problems caused by bolt stripping and aging of sealing rings in traditional threaded oil draining. After the oil draining is completed, the snap-fit ​​block 43 is inserted into the snap-fit ​​frame 41. During insertion, the snap-fit ​​connector 46 is squeezed into the round groove 44. After the snap-fit ​​block 43 is fully inserted into the snap-fit ​​frame 41, the position of the snap-fit ​​hole 42 is aligned with the position of the round groove 44. At this time, the snap-fit ​​connector 46 will be ejected from the round groove 44 under the action of the snap-fit ​​spring 45, so that the snap-fit ​​connector 46 and the snap-fit ​​hole 42 are snapped together, thus achieving the snap-fit ​​effect. Through the engagement of the snap-fit ​​connector 46 and the snap-fit ​​hole 42, the inner ring 33 and the outer ring 31 are fixed, thereby keeping the oil drain column 34 in a sealed position inside the outer shell 32 and preventing oil leakage.

Claims

1. A car oil pan with rapid oil drain capability, characterized in that: The device includes a bottom shell body (1), an oil drain port (2) is provided inside the bottom shell body (1), an oil drain assembly (3) is fixedly connected to the lower end of the bottom shell body (1), the oil drain assembly (3) and the oil drain port (2) are inserted into each other, the oil drain assembly (3) includes an outer ring (31), an outer shell (32) is fixedly connected to the upper end of the outer ring (31), the outer shell (32) and the oil drain port (2) are inserted into each other, an oil drain column (34) is slidably inserted inside the outer shell (32), an inner ring (33) is fixedly connected to the lower end of the oil drain column (34), a positioning assembly (4) is provided on the opposite side of the inner ring (33) and the outer ring (31), an oil inlet groove (36) is provided on the surface of the outer shell (32), and an oil drain hole (35) is provided inside the oil drain column (34).

2. The automotive oil pan with rapid oil draining capability according to claim 1, characterized in that: The positioning component (4) includes a snap-fit ​​frame (41) on both sides of the lower end of the outer ring (31). The snap-fit ​​frame (41) has snap-fit ​​holes (42) on its outer side. The upper end of the inner ring (33) is fixedly connected to a snap-fit ​​block (43). The snap-fit ​​block (43) and the snap-fit ​​frame (41) are inserted into each other.

3. The automotive oil pan with rapid oil draining capability according to claim 2, characterized in that: The outer side of each snap-fit ​​block (43) is provided with a circular groove (44), and a snap-fit ​​spring (45) is fixedly connected inside the circular groove (44). The other end of the snap-fit ​​spring (45) is fixedly connected with a snap-fit ​​connector (46), and the snap-fit ​​connector (46) is snapped into the snap-fit ​​hole (42).

4. The automotive oil pan with rapid oil draining capability according to claim 3, characterized in that: Release springs (11) are fixedly connected to both sides of the snap-fit ​​frame (41) on both sides of the snap-fit ​​hole (42). A pressing plate (12) is fixedly connected to the other end of the release spring (11). A release block (13) is fixedly connected to the inner side of the pressing plate (12). The release block (13) is inserted into the snap-fit ​​hole (42).

5. A car oil pan with rapid oil draining capability according to claim 1, characterized in that: The upper end of the oil drain column (34) is slidably inserted into the interior of the outer shell (32). A sealing ring (7) is fixedly connected to the upper end of the oil drain column (34). A sealing groove (8) is provided inside the outer shell (32). The sealing groove (8) and the sealing ring (7) are mutually sealed and inserted.

6. A car oil pan with rapid oil draining capability according to claim 1, characterized in that: The outer shell (32) is fitted with a first sealing sleeve (5), which is movably connected to the inner side of the drain port (2). The outer surface of the drain column (34) is fixedly connected with a second sealing sleeve (6), which is slidably connected to the inner side of the outer shell (32).

7. A car oil pan with rapid oil draining capability according to claim 1, characterized in that: The outer side of the oil drain column (34) is slidably connected to the inner side of the outer shell (32). A limiting groove (9) is provided on the inner side of the outer shell (32). A limiting slider (10) is fixedly connected to the outer side of the oil drain column (34). The limiting slider (10) and the limiting groove (9) are slidably connected to each other.

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