A drain wrench for an engine oil pan of a transport vehicle
By designing an engine oil pan drain wrench with an extension rod, ratchet, and oil reservoir, the problems of oil leakage and inconvenience in disassembling the oil pan using traditional tools are solved, achieving stable, safe, and convenient oil disassembly and recovery.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINESE PEOPLES LIBERATION ARMY UNIT 31656
- Filing Date
- 2025-09-08
- Publication Date
- 2026-07-24
AI Technical Summary
Traditional tools can easily lead to oil leaks and operational inconvenience when removing the engine oil pan, affecting the environment and site cleanliness.
An engine oil pan drain wrench was designed, comprising a handle, an extension rod, a ratchet, an oil reservoir, and a sleeve. It features extended leverage, anti-slip, oil storage, and quick disassembly functions. Stability is enhanced by a latch and slot connection, and a nitrile rubber oil seal is used to prevent oil leakage.
It enables stable removal of engine oil pan bolts, reduces oil leakage, improves operational safety and convenience, and keeps the work site clean.
Smart Images
Figure CN224544419U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of oil drain wrenches, specifically an oil drain wrench for the engine oil pan of a transport vehicle. Background Technology
[0002] In modern transport vehicles, especially various types of trucks, buses and construction machinery, engine maintenance is particularly important. As an important part of the engine lubrication system, the engine oil pan usually stores a large amount of lubricating oil, and using and changing the oil is a routine maintenance item.
[0003] Traditional tools require the use of ordinary wrenches or tools to break or remove the drain plug of the oil pan, which is cumbersome and can easily lead to oil leaks or oil pollution. Oil leaks may cause environmental pollution and an untidy work site. Utility Model Content
[0004] (a) Technical problems to be solved To address the shortcomings of existing technologies, this utility model provides an oil drain wrench for the engine oil pan of a transport vehicle, thereby solving the problems mentioned in the background section.
[0005] (II) Technical Solution To achieve the above objectives, this utility model provides the following technical solution: an oil drain wrench for the engine oil pan of a transport vehicle, including a handle, an extension rod connected to the left side of the handle, a ratchet connected to the left side of the extension rod, a connecting rod installed on the top of the ratchet, an oil reservoir installed on the outer side of the connecting rod, and a sleeve installed on the top of the connecting rod.
[0006] Preferably, an oil drain valve is installed on the outside of the oil storage tank, and a rubber pad is installed on the top outside of the oil storage tank.
[0007] Preferably, an anti-slip sleeve is fitted onto the outer side of the handle, and an anti-slip strip is installed on the outer side of the anti-slip sleeve.
[0008] Preferably, a slot is provided on the left side of both the handle and the extension rod, and a latch is installed on the right side of both the extension rod and the ratchet. The latch is slidably connected to the inside of the slot, and the latch and the slot are fixed by a locking pin.
[0009] Preferably, a connecting seat is installed on the top of the ratchet, first balls are installed on the front and rear sides of the top of the connecting seat, a retaining seat is provided on the top of the connecting rod, and a groove is provided on the bottom of the sleeve, with the retaining seat slidably connected to the inside of the groove.
[0010] Preferably, the ratchet has a gear installed inside, a pawl is provided on the right side of the gear, a reversing rod is connected to the bottom of the pawl, and a second ball is installed on the right side of the pawl.
[0011] Preferably, an oil seal is fitted between the oil storage tank and the connecting rod, and the oil seal is made of nitrile rubber.
[0012] Compared with the prior art, this utility model provides an engine oil pan drain wrench for a transport vehicle, which has the following advantages: the extended rod between the handle and the ratchet of this engine oil pan drain wrench can provide leverage force, making it easy to remove the screws by force and improving stability; the anti-slip sleeve can increase the friction when gripping and prevent slippage; an oil drain valve is installed on the outside of the oil reservoir for transferring the recovered engine oil; a rubber pad is installed on the top outside of the oil reservoir so that the oil reservoir can always be in contact with the surface of the oil pan and prevent oil splashing; the first ball can be used for quick disassembly; and the latch and slot facilitate the replacement of different types of sockets. Attached Figure Description
[0013] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the latch structure of this utility model; Figure 3 This is a schematic diagram of the gear structure of this utility model; Figure 4 This is a schematic diagram of the oil seal structure of this utility model.
[0014] In the diagram: 1. Handle; 2. Anti-slip sleeve; 3. Extension rod; 4. Ratchet; 5. Connecting rod; 6. Oil reservoir; 7. Sleeve; 8. Connecting seat; 9. First ball bearing; 10. Tongue; 11. Slot; 12. Pin; 13. Gear; 14. Claw; 15. Reversing rod; 16. Second ball bearing; 17. Drain valve; 18. Oil seal; 19. Seat; 20. Groove. Detailed Implementation
[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0016] like Figure 1-4 As shown, this utility model provides a technical solution: an oil drain wrench for the engine oil pan of a transport vehicle, including a handle 1, an extension rod 3 connected to the left side of the handle 1, a ratchet 4 connected to the left side of the extension rod 3, a connecting rod 5 installed on the top of the ratchet 4, an oil reservoir 6 installed on the outer side of the connecting rod 5, and a sleeve 7 installed on the top of the connecting rod 5.
[0017] Furthermore, an oil drain valve 17 is installed on the outside of the oil storage tank 6, and a rubber pad is installed on the top outside of the oil storage tank 6.
[0018] Specifically, the oil reservoir 6 can recover engine oil and transfer it through the drain valve 17. The rubber pad can increase the stability of the oil reservoir 6 and prevent slippage. Furthermore, an anti-slip sleeve 2 is fitted onto the outside of the handle 1, and an anti-slip strip is installed on the outside of the anti-slip sleeve 2.
[0019] Specifically, the anti-slip sleeve 2 can improve the grip safety and comfort of the handle 1 and reduce operator fatigue.
[0020] Furthermore, a slot 11 is provided on the left side of both the handle 1 and the extension rod 3, and a latch 10 is installed on the right side of both the extension rod 3 and the ratchet 4. The latch 10 is slidably connected to the inside of the slot 11, and the latch 10 and the slot 11 are fixed by a latch pin 12.
[0021] Specifically, the slot 11 and the latch 10 can improve the connection stability between the handle 1 and the extension rod 3, and the latch 12 limits the sliding range of the latch 10 to maintain the safety of the structure.
[0022] Furthermore, a connecting seat 8 is installed on the top of the ratchet 4, and first balls 9 are installed on the front and rear sides of the top of the connecting seat 8. A retaining seat 19 is provided on the top of the connecting rod 5, and a groove 20 is provided on the bottom of the sleeve 7. The retaining seat 19 is slidably connected to the inside of the groove 20.
[0023] Specifically, the first ball 9 can act as a spring or buffer to position and limit the movement of the connecting seat 8, and the retainer 19 can limit the movement of the sleeve 7 to improve the stability of use.
[0024] Furthermore, a gear 13 is installed inside the ratchet 4, a pawl 14 is provided on the right side of the gear 13, a reversing lever 15 is connected to the bottom of the pawl 14, and a second ball bearing 16 is installed on the right side of the pawl 14.
[0025] Specifically, the pawl 14 and the reversing lever 15 work together to achieve the function of switching directions. The second ball 16 can keep the pawl 14 in contact with the reversing lever 15 to maintain structural stability.
[0026] Furthermore, an oil seal 18 is fitted between the oil storage tank 6 and the connecting rod 5. The oil seal 18 is made of nitrile rubber.
[0027] Specifically, the oil seal 18 prevents oil leakage from the oil reservoir 6. Nitrile rubber is a synthetic rubber with good oil resistance and wear resistance, which can improve the service life of the oil seal 18.
[0028] Working principle: First, an extension rod 3 is connected to the left side of the handle 1, and a ratchet 4 is connected to the left side of the extension rod 3. Both the handle 1 and the extension rod 3 have slots 11 on their left sides, and latches 10 are installed on the right sides of the extension rod 3 and the ratchet 4. The length of the handle 1 can be extended by the latches 10 and the slots 11, providing leverage. Second, an anti-slip sleeve 2 is fitted on the outside of the handle 1. The anti-slip sleeve 2 can increase the friction when gripping and prevent slippage. An oil drain valve 17 is installed on the outside of the oil reservoir 6 for transferring the recovered engine oil. A rubber pad is installed on the top outside of the oil reservoir 6 so that the oil reservoir 6 can always be in contact with the surface of the oil pan. Finally, a connecting seat 8 is installed on the top of the ratchet 4. First ball bearings 9 are installed on the front and rear sides of the top of the connecting seat 8 for quick disassembly. A retaining seat 19 is provided on the top of the connecting rod 5, and a groove 20 is provided on the bottom of the sleeve 7. The retaining seat 19 is slidably connected to the inside of the groove 20, which facilitates the replacement of different models of sleeves 7.
[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. An oil drain wrench for the engine oil pan of a transport vehicle, comprising a handle (1), characterized in that: An extension rod (3) is connected to the left side of the handle (1), a ratchet (4) is connected to the left side of the extension rod (3), a connecting rod (5) is installed on the top of the ratchet (4), an oil reservoir (6) is installed on the outside of the connecting rod (5), and a sleeve (7) is installed on the top of the connecting rod (5).
2. The oil drain wrench for the engine oil pan of a transport vehicle according to claim 1, characterized in that: An oil drain valve (17) is installed on the outside of the oil storage tank (6), and a rubber pad is installed on the top outside of the oil storage tank (6).
3. The oil drain wrench for the engine oil pan of a transport vehicle according to claim 1, characterized in that: The handle (1) is fitted with an anti-slip sleeve (2) on its outer side, and an anti-slip strip is installed on the outer side of the anti-slip sleeve (2).
4. The oil drain wrench for the engine oil pan of a transport vehicle according to claim 1, characterized in that: The handle (1) and the extension rod (3) are provided with slots (11) on the left side, and the extension rod (3) and the ratchet (4) are provided with latches (10) on the right side. The latches (10) are slidably connected to the inside of the slots (11), and the latches (10) and the slots (11) are fixed by latches (12).
5. The oil drain wrench for the engine oil pan of a transport vehicle according to claim 1, characterized in that: The ratchet (4) is equipped with a connecting seat (8) on its top. The connecting seat (8) has first balls (9) installed on its front and rear sides. The connecting rod (5) has a card seat (19) on its top. The sleeve (7) has a groove (20) at its bottom. The card seat (19) is slidably connected to the inside of the groove (20).
6. The oil drain wrench for the engine oil pan of a transport vehicle according to claim 1, characterized in that: The ratchet (4) has a gear (13) installed inside. A pawl (14) is provided on the right side of the gear (13). A reversing rod (15) is connected to the bottom of the pawl (14). A second ball (16) is installed on the right side of the pawl (14).
7. The oil drain wrench for the engine oil pan of a transport vehicle according to claim 1, characterized in that: An oil seal (18) is fitted between the oil storage tank (6) and the connecting rod (5), and the oil seal (18) is made of nitrile rubber.