Engine oil alarm
By using an airbag-driven spring assembly in the oil alarm, the problem of decreased detection accuracy caused by oil sludge adhering to the piston and float is solved, achieving higher detection accuracy and stability, and adapting to different oil systems.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-03
- Publication Date
- 2026-03-31
AI Technical Summary
Existing oil pressure alarms suffer from reduced detection accuracy due to the accumulation of sludge on the piston and float plate after prolonged operation, affecting the accuracy of oil pressure detection.
The spring assembly is driven by two airbags that exchange air with each other, which reduces the direct contact area between mechanical parts and engine oil. The spring is driven by the expansion and contraction of the airbags, which reduces the risk of sludge accumulation.
It improves the accuracy and stability of oil pressure monitoring, avoids the problem of oil sludge adhesion affecting detection accuracy, and enhances the adaptability and flexibility of the oil alarm.
Smart Images
Figure CN224065238U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of automotive component technology, specifically to an oil pressure warning device. Background Technology
[0002] Engine oil is used for lubrication in the transmission mechanical components of a car. After lubrication, it can reduce the wear between mechanical components. The oil tank contains lubricating oil, which is delivered to various systems for lubrication. When the oil in the oil tank is used up, the oil pressure alarm will sound to notify the personnel to add oil. Generally, the oil pressure alarm detects the oil pressure in the oil tank, thereby detecting the oil level in the oil tank.
[0003] Existing oil pressure alarms typically use pistons and floats to drive pressure components such as springs to detect oil pressure. After prolonged operation, a large amount of sludge accumulates on the pistons and floats, affecting their normal movement and making it impossible to accurately drive the springs, thus impacting the accuracy of oil pressure detection. Utility Model Content
[0004] To address the shortcomings of existing technologies, this application provides an oil pressure alarm that uses two air chambers to exchange air and drive pressure components such as springs. This reduces the direct contact area between mechanical parts and oil, lowers the risk of sludge accumulation, and avoids the problem of sludge buildup affecting detection accuracy after prolonged operation. It also improves the accuracy and stability of oil pressure monitoring. This solution addresses the problem that existing oil pressure alarms typically use pistons and floats to drive pressure components such as springs to detect oil pressure. After prolonged operation, a large amount of sludge accumulates on the pistons and floats, affecting their normal movement and leading to inaccurate spring driving and thus affecting the accuracy of oil pressure detection.
[0005] To achieve the goal of driving pressure components such as springs by exchanging air between two airbags, reducing the direct contact area between mechanical parts and engine oil, lowering the risk of sludge accumulation, and avoiding the problem of sludge adhesion affecting detection accuracy after long-term operation, thus improving the accuracy and stability of engine oil pressure monitoring, this application provides the following technical solution: An engine oil alarm includes a housing, one end of which is connected to an oil pipe. A partition is provided on the inner wall of the middle of the oil pipe, and an air hole is opened in the middle of the partition. A first airbag is provided on the outer surface of one side of the partition, and a second airbag is provided on the outer surface of the other side of the partition. The interior of the first airbag and the interior of the second airbag are connected through the air hole. A push rod is provided on the side of the second airbag away from the partition. A connecting plate is provided at one end of the push rod. One side of the connecting plate is provided at one end of a spring. The spring is located inside the housing. An active trigger is provided on the side of the connecting plate away from the spring. A passive trigger is provided on the side of the active trigger. The passive trigger is located at one end of the inner wall of the housing through a fixing rod.
[0006] The above scheme applies pressure to the first airbag through the oil pressure in the oil pipe, causing it to contract. The first airbag then pushes the second airbag to expand. The expansion of the second airbag causes the push rod to work with the connecting plate to drive the spring. This achieves the goal of driving the spring and other pressure components by exchanging air between the two airbags. This reduces the direct contact area between mechanical parts and oil, lowers the risk of sludge accumulation, and avoids the problem of sludge adhesion affecting detection accuracy after long-term operation. This improves the accuracy and stability of oil pressure monitoring.
[0007] Furthermore, the outer surface of the middle part of the push rod is slidably disposed within the inner wall of the middle part of the second limiting frame, and the side of the second limiting frame is disposed on the side of the inner wall of the middle part of the oil pipe through a fixing plate. The outer surface of the middle part of the push rod is quadrilateral, and the shape of the outer surface of the middle part of the push rod is adapted to the shape of the inner wall of the middle part of the second limiting frame.
[0008] The above solution allows the trajectory of the push rod to be fixed by sliding the outer surface of the middle part of the push rod within the inner wall of the second limiting frame, thereby improving the stability of the push rod during movement. At the same time, it can fix the direction of expansion and contraction of the second airbag. The shape of the outer surface of the middle part of the push rod and the inner wall of the second limiting frame can fix the angle at which the push rod drives the connecting plate to move, thus preventing the push rod from twisting and rotating when the second airbag expands.
[0009] Furthermore, a first limiting rod is provided on the side of the first airbag away from the partition, and a first limiting frame is sleeved on the outer surface of the middle part of the first limiting rod. The side of the first limiting frame is set on the side of the inner wall of the middle part of the oil pipe through a fixing plate.
[0010] The above scheme restricts the trajectory of the first limiting rod by using the first limiting frame fitted on the outer surface of the middle part of the first limiting rod, thereby restricting the direction of expansion and contraction of the first airbag.
[0011] Furthermore, there is a gap between the outer surface of the middle part of the first limiting rod and the inner wall of the middle part of the first limiting frame, the outer surface of the middle part of the first limiting rod is quadrilateral, and the shape of the outer surface of the middle part of the first limiting rod is adapted to the shape of the inner wall of the middle part of the first limiting frame.
[0012] The above solution avoids the movement between the first limiting rod and the first limiting frame from being affected by sludge due to the gap between the outer surface of the middle part of the first limiting rod and the inner wall of the middle part of the first limiting frame. This also avoids the first airbag from being affected by the friction between the first limiting rod and the first limiting frame. The shape of the outer surface of the middle part of the first limiting rod and the inner wall of the middle part of the first limiting frame can also prevent the first airbag from twisting significantly when it expands and contracts.
[0013] Furthermore, one end of the spring is disposed on one side of the positioning plate, the inner wall of the middle part of the positioning plate is threadedly connected to the outer surface of the middle part of the threaded rod, one end of the threaded rod is disposed on one side of the adjusting knob, and the adjusting knob is rotatably disposed on the inner wall of one end of the housing.
[0014] The above solution involves rotating an adjustment knob to rotate a threaded rod, which in turn moves a positioning plate. This allows the positioning plate to adjust the preload of the spring, enabling users to precisely set the safe oil pressure threshold according to their needs. This adjustable design allows the oil pressure alarm to adapt to different models and specifications of oil systems, improving its practicality and flexibility.
[0015] Furthermore, a limiting plate is provided on the side of the push rod, and the limiting plate is located between the connecting plate and the second limiting frame.
[0016] The above solution limits the distance the spring pushes the connecting plate, preventing the spring from excessively compressing the second airbag through the connecting plate and push rod, thus avoiding damage to the second airbag. It also prevents the connecting plate from excessively pushing the passive trigger through the active trigger, which could damage both the active and passive triggers.
[0017] Furthermore, a positioning rod is provided on the side of the positioning plate away from the spring, and the outer surface of the middle part of the positioning rod is inserted into the inner wall of one end of the housing.
[0018] The above solution allows the positioning plate's trajectory to be fixed by sliding the outer surface of the middle part of the positioning rod within the inner wall of one end of the housing, thereby improving the stability of the positioning plate during movement.
[0019] Furthermore, a protective sleeve is provided at one end of the housing, and the protective sleeve is fitted onto the outside of one end of the positioning rod. The protective sleeve is made of transparent material, and a scale line is provided on the outer surface of one side of the middle part of the protective sleeve.
[0020] Using the above method, users can determine the extension length of the positioning rod by looking through the protective cover and observing the scale lines, thereby indirectly understanding the degree of spring compression.
[0021] Compared with the prior art, the technical solution of this application has the following beneficial effects:
[0022] This oil pressure alarm uses the oil pressure in the oil pipe to pressurize the first airbag, causing it to contract. The first airbag then pushes the second airbag to expand. The expansion of the second airbag causes a push rod, in conjunction with a connecting plate, to drive a spring. This allows the two airbags to exchange air, thus driving the spring and other pressure components. This reduces the direct contact area between mechanical parts and oil, lowers the risk of sludge accumulation, and avoids the problem of sludge buildup affecting detection accuracy after prolonged operation. This improves the accuracy and stability of oil pressure monitoring. Attached Figure Description
[0023] Figure 1 This is a three-dimensional structural diagram of the present application;
[0024] Figure 2 This is a three-dimensional sectional view of the structure of this application;
[0025] Figure 3 This is a schematic diagram of the front cross-sectional structure of this application;
[0026] Figure 4 This is a front cross-sectional view of the first airbag, the second airbag, and the partition in this application.
[0027] Figure 5 This is a schematic diagram of the explosion structure of the first and second airbags in this application;
[0028] Figure 6 This is a schematic diagram of the connection structure between the first limiting rod and the second limiting rod in this application.
[0029] In the picture:
[0030] 1. Housing; 2. Oil pipe; 3. Divider; 4. First airbag; 5. Second airbag; 6. Push rod; 7. Connecting plate; 8. Spring; 9. Active trigger; 10. Passive trigger; 11. First limit rod; 12. First limit frame; 13. Second limit frame; 14. Limit plate; 15. Positioning plate; 16. Threaded rod; 17. Adjustment knob; 18. Air hole; 19. Positioning rod; 20. Protective sleeve. Detailed Implementation
[0031] 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. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0032] Please see Figure 2 , Figure 3 and Figure 4 An oil alarm in this embodiment includes a housing 1. One end of the housing 1 is connected to an oil pipe 2. A partition 3 is provided on the inner wall of the middle part of the oil pipe 2. An air hole 18 is opened in the middle of the partition 3. A first airbag 4 is provided on the outer surface of one side of the partition 3, and a second airbag 5 is provided on the outer surface of the other side of the partition 3. The interior of the first airbag 4 and the interior of the second airbag 5 are connected through the air hole 18. A push rod 6 is provided on the side of the second airbag 5 away from the partition 3. A connecting plate 7 is provided on one end of the push rod 6. One side of the connecting plate 7 is provided on one end of a spring 8. The spring 8 is located inside the housing 1. An active trigger 9 is provided on the side of the connecting plate 7 away from the spring 8. A passive trigger 10 is provided on one side of the active trigger 9. The passive trigger 10 is provided on one end of the inner wall of the housing 1 through a fixing rod.
[0033] Please see Figure 2 and Figure 3 The outer surface of the middle part of the push rod 6 is slidably disposed within the inner wall of the middle part of the second limiting frame 13. The side of the second limiting frame 13 is disposed on the side of the inner wall of the middle part of the oil pipe 2 through a fixing plate. The outer surface of the middle part of the push rod 6 is quadrilateral. The shape of the outer surface of the middle part of the push rod 6 is adapted to the shape of the inner wall of the middle part of the second limiting frame 13. By sliding the outer surface of the middle part of the push rod 6 within the inner wall of the middle part of the second limiting frame 13, the trajectory of the push rod 6 can be fixed, improving the stability of the push rod 6 during movement. At the same time, the direction of expansion and contraction of the second airbag 5 can be fixed. The shape of the outer surface of the middle part of the push rod 6 and the inner wall of the middle part of the second limiting frame 13 can fix the angle when the push rod 6 drives the connecting plate 7 to move, which can prevent the push rod 6 from twisting and rotating when the second airbag 5 expands.
[0034] Please see Figure 2 , Figure 3 and Figure 6 A first limiting rod 11 is provided on the side of the first airbag 4 away from the partition 3. A first limiting frame 12 is sleeved on the outer surface of the middle part of the first limiting rod 11. The side of the first limiting frame 12 is set on the side of the inner wall of the middle part of the oil pipe 2 through a fixing plate. The first limiting frame 12 sleeved on the outer surface of the middle part of the first limiting rod 11 can restrict the movement trajectory of the first limiting rod 11, thereby restricting the direction of expansion and contraction of the first airbag 4.
[0035] Please see Figure 6There is a gap between the outer surface of the middle part of the first limiting rod 11 and the inner wall of the middle part of the first limiting frame 12. The outer surface of the middle part of the first limiting rod 11 is quadrilateral. The shape of the outer surface of the middle part of the first limiting rod 11 matches the shape of the inner wall of the middle part of the first limiting frame 12. The gap between the outer surface of the middle part of the first limiting rod 11 and the inner wall of the middle part of the first limiting frame 12 can prevent the movement between the first limiting rod 11 and the first limiting frame 12 from being affected by sludge, thereby preventing the first airbag 4 from being affected by the friction between the first limiting rod 11 and the first limiting frame 12. The shape of the outer surface of the middle part of the first limiting rod 11 and the inner wall of the middle part of the first limiting frame 12 can prevent the first airbag 4 from twisting significantly when it expands and contracts.
[0036] Please see Figure 1 , Figure 2 and Figure 3 One end of the spring 8 is mounted on one side of the positioning plate 15. The inner wall of the positioning plate 15 is threadedly connected to the outer surface of the threaded rod 16. One end of the threaded rod 16 is mounted on one side of the adjusting knob 17. The adjusting knob 17 is rotatably mounted on the inner wall of one end of the housing 1. Rotating the adjusting knob 17 drives the threaded rod 16 to rotate, causing the threaded rod 16 to move the positioning plate 15. This allows the positioning plate 15 to adjust the preload of the spring 8, enabling the user to adjust the preload of the spring 8 according to actual needs, thereby accurately setting the safe threshold of the oil pressure. This adjustable design allows the oil pressure alarm to adapt to different models and specifications of oil systems, improving its practicality and flexibility.
[0037] Please see Figure 2 and Figure 3 A limiting plate 14 is provided on the side of the push rod 6. The limiting plate 14 is located between the connecting plate 7 and the second limiting frame 13. The limiting plate 14 can limit the distance that the spring 8 pushes the connecting plate 7 to move, so as to prevent the spring 8 from squeezing the second airbag 5 too much through the connecting plate 7 and the push rod 6, which would damage the second airbag 5. At the same time, it can prevent the connecting plate 7 from pushing the passive trigger 10 too much through the active trigger 9, which would damage the active trigger 9 and the passive trigger 10.
[0038] Please see Figure 2 and Figure 3 A positioning rod 19 is provided on the side of the positioning plate 15 away from the spring 8. The outer surface of the middle part of the positioning rod 19 is inserted into the inner wall of one end of the housing 1. The trajectory of the positioning plate 15 when it moves can be fixed by sliding the outer surface of the middle part of the positioning rod 19 in the inner wall of one end of the housing 1, thereby improving the stability of the positioning plate 15 when it moves.
[0039] Please see Figure 1 , Figure 2 and Figure 3The housing 1 has a protective sleeve 20 at one end, which is fitted onto the outside of one end of the positioning rod 19. The protective sleeve 20 is made of transparent material, and a scale line is provided on the outer surface of one side of the middle of the protective sleeve 20. The user can judge the extension length of the positioning rod 19 by looking through the protective sleeve 20 and observing the scale line, thereby indirectly understanding the degree of compression of the spring 8.
[0040] In this embodiment, an oil pressure alarm uses the oil pressure in the oil pipe 2 to pressurize the first airbag 4, causing it to contract. The first airbag 4 then pushes the second airbag 5 to expand. The expansion of the second airbag 5 causes the push rod 6, in conjunction with the connecting plate 7, to drive the spring 8. This achieves the goal of driving the spring and other pressure components by exchanging air between the two airbags, reducing the direct contact area between mechanical parts and oil, lowering the risk of sludge accumulation, and avoiding the problem of sludge adhesion affecting detection accuracy after long-term operation. This improves the accuracy and stability of oil pressure monitoring.
[0041] The working principle of the above embodiment is as follows: Engine oil enters the oil pipe 2 through the oil inlet at one end of the oil pipe 2. The oil pressure applies pressure to the first airbag 4, causing the first airbag 4 to contract. Through the connection between the first airbag 4 and the second airbag 5, the first airbag 4 pushes the second airbag 5 to inflate. When the second airbag 5 inflates, it pushes the push rod 6, causing the push rod 6 to push the connecting plate 7. The movement of the connecting plate 7 compresses the spring 8. At the same time, the movement of the connecting plate 7 moves the active trigger 9 away from the passive trigger 10. When the oil pressure is insufficient and cannot apply enough pressure to the first airbag 4, the pushing force of the spring 8 will... Pushing the connecting plate 7 towards the partition 3 causes the connecting plate 7 to compress the second airbag 5 via the push rod 6, causing the second airbag 5 to contract. At the same time, the movement of the connecting plate 7 causes the active trigger 9 to move towards the passive trigger 10 until the active trigger 9 and the passive trigger 10 come into contact. The active trigger 9 and the passive trigger 10 cooperate to issue an alarm signal. Meanwhile, the adjustment knob 17 can be rotated as needed to drive the threaded rod 16 to rotate, causing the threaded rod 16 to move the positioning plate 15. The movement of the positioning plate 15 can adjust the pressure of the spring 8, thus making the pressure of the spring 8 suitable for detection work under different conditions.
[0042] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0043] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.
Claims
1. An oil alarm comprising a housing (1), characterised in that: The shell (1) one end is connected with oil pipe (2), the oil pipe (2) middle inner wall is provided with the baffle (3), the baffle (3) middle is provided with air hole (18), the baffle (3) one side outer surface is provided with first air bag (4), the baffle (3) the other side outer surface is provided with second air bag (5), first air bag (4) inside and second air bag (5) inside are communicated through air hole (18), the second air bag (5) is away from the side of baffle (3) and is provided with push rod (6), the push rod (6) one end is provided with connecting plate (7), the connecting plate (7) one side is located in the one end of spring (8), the spring (8) is arranged in the inside of shell (1), the connecting plate (7) is away from the side of spring (8) and is provided with active trigger (9), the active trigger (9) one side is equipped with passive trigger (10), the passive trigger (10) is through fixed rod and is arranged in the one end of shell (1) inner wall.
2. An oil warning device according to claim 1, wherein: The middle outer surface of the push rod (6) is slidably arranged in the middle inner wall of the second limiting frame (13), the side of the second limiting frame (13) is arranged on the side of the middle inner wall of the oil pipe (2) through the fixed plate, the middle outer surface of the push rod (6) is quadrilateral, and the shape of the middle outer surface of the push rod (6) is matched with the shape of the middle inner wall of the second limiting frame (13).
3. An oil alarm as defined in claim 1 wherein: The first air bag (4) is away from the side of the baffle (3) and is provided with the first limiting rod (11), the first limiting rod (11) is provided with the first limiting frame (12) on the middle outer surface, and the side of the first limiting frame (12) is arranged on the side of the middle inner wall of the oil pipe (2) through the fixed plate.
4. An oil warning device according to claim 3, wherein: There is a gap between the middle outer surface of the first limiting rod (11) and the middle inner wall of the first limiting frame (12), the middle outer surface of the first limiting rod (11) is quadrilateral, and the shape of the middle outer surface of the first limiting rod (11) is matched with the shape of the middle inner wall of the first limiting frame (12).
5. The oil alarm of claim 1 wherein: The one end of the spring (8) is arranged on one side of the positioning plate (15), the middle inner wall of the positioning plate (15) is threadedly connected to the middle outer surface of the threaded rod (16), the one end of the threaded rod (16) is arranged on one side of the adjusting knob (17), and the adjusting knob (17) is rotationally arranged in the inner wall of one end of the shell (1).
6. An oil alarm as defined in claim 1 wherein: The side of the push rod (6) is provided with a limiting plate (14), and the limiting plate (14) is located between the connecting plate (7) and the second limiting frame (13).
7. An oil alarm as defined in claim 5 wherein: The side, away from the spring (8), of the positioning plate (15) is provided with a positioning rod (19), and the middle outer surface of the positioning rod (19) is inserted into the inner wall of one end of the shell (1).
8. The oil alarm of claim 1 wherein: One end of the shell (1) is provided with a protective sleeve (20), the protective sleeve (20) is sleeved on the outer side of one end of the positioning rod (19), the protective sleeve (20) is made of transparent material, and a scale line is arranged on one side of the middle outer surface of the protective sleeve (20).