Flow-stable automobile steering assist pump

Abstract

The utility model relates to power assisted pump technical field discloses a flow steady automobile steering power assisted pump, including power assisted pump main part, the drive end fixed connection of power assisted pump main part has pulley, the fixed connection of oil inlet of power assisted pump main part has oil inlet pipe, the fixed connection of oil discharge end of power assisted pump main part has the oil discharge pipe with the intercommunication of steering system, because oil liquid will enter steering system after through power assisted pump main part, then by steering system return to oil tank and carry out recycling, and in this circulation process, metal scrap will continue to move along with oil liquid, at this moment when the oil liquid with metal scrap enters to the inside of filter bowl, the larger impurity is blocked by fine filter screen, and metal scrap is absorbed by magnet through fine filter screen, because long time scouring, will lead to metal scrap to be washed down, therefore set up leakproof filter screen on the other side of magnet, can block the metal scrap that washes down, thereby avoid entering the inside of power assisted pump main part again.

Description

Technical Field

[0001] This utility model relates to the field of power steering pump technology, specifically to a car power steering pump with stable flow rate. Background Technology

[0002] Throughout the long history of the automotive industry, the steering system, as one of the core components that ensure vehicle handling performance and driving safety, has always been a key focus of research and development in terms of performance optimization and upgrading. As a key power source for the power steering system, the power steering pump converts the mechanical energy output by the engine into hydraulic energy to provide additional assistance to the steering system, enabling the driver to easily control the steering wheel with less force, greatly improving driving comfort and handling.

[0003] For example, Chinese Patent No. CN220667805U discloses a more stable variable vane power steering pump, which includes a pump body and an end cover. The pump body is equipped with a rotor, a stator, a stator sleeve, a safety valve, and a return spring. The stator is limited and set in the stator sleeve by a positioning pin and abuts against one end of the return spring. One end of the rotor extends into the stator. Several vanes are inserted on the circumferential side of the rotor. An installation groove is opened on the inner wall of the stator sleeve on the side of the positioning pin near the return spring, which extends outward along the axial direction of the stator sleeve. The bottom of the installation groove is a plane. Support vanes are inserted in the installation groove. One side of the support vane abuts against the bottom of the installation groove, and the other side abuts against the outer wall of the stator. A swing groove is opened at each end of the bottom of the installation groove.

[0004] Currently, the hydraulic fluid used in automotive power steering pumps is typically in a recirculation state. The fluid flows from the power steering pump into the steering system and then back to the reservoir, repeating this process. However, there are significant shortcomings in this fluid circulation process. As the fluid flows within the power steering pump and steering system, friction and wear of mechanical components generate metal shavings and other impurities, which circulate with the fluid. With prolonged use, these impurities accumulate, and larger impurities may affect the smoothness of fluid flow, leading to unstable fluid supply to the power steering pump. This, in turn, affects the effectiveness of the power steering, making steering heavy or causing it to jam. Furthermore, if metal shavings enter the power steering pump, they will accelerate the wear of internal components, shorten the pump's lifespan, increase maintenance costs, and raise the risk of vehicle malfunctions. Therefore, those skilled in the art provide an automotive power steering pump with stable flow rate to solve the problems mentioned in the background section. Utility Model Content

[0005] The purpose of this invention is to provide a power steering pump for automobiles with stable flow rate, thereby solving the problems mentioned in the background art.

[0006] This utility model provides the following technical solution: a power steering pump with stable flow rate, including a power steering pump body, a pulley fixedly connected to the drive end of the power steering pump body, an oil inlet pipe fixedly connected to the oil inlet end of the power steering pump body, an oil outlet pipe connected to the steering system fixedly connected to the oil outlet end of the power steering pump body, and a filter mechanism for filtering oil is provided at the end of the oil inlet pipe away from the power steering pump body.

[0007] Preferably, the filter mechanism includes a first protective shell and a second protective shell. Flanges are fixedly connected to opposite sides of the first and second protective shells. Several mounting holes are arranged in a circular array on the outer walls of the two flanges. A positioning bolt for locking is installed on the outer wall of one of the flanges at the position corresponding to the mounting hole. The end of the positioning bolt is locked with a nut.

[0008] Preferably, a filter cartridge is provided inside the first protective shell, and six positioning rods are fixedly connected to both sides of the outer wall of the filter cartridge. The two sets of positioning rods are in contact with the inner sidewalls of the first and second protective shells, respectively. A magnet for adsorbing iron filings is fixedly connected to the middle of the inner sidewall of the filter cartridge, and a fine filter screen and a leak-proof filter screen are fixedly connected to both sides of the magnet inside the filter cartridge.

[0009] Preferably, a sealing ring to prevent oil leakage is embedded on the opposite side of the first protective shell and the second protective shell, and a flow oil pipe for connecting to an external oil tank is threaded at the center of the side of the second protective shell away from the flange.

[0010] Preferably, an oil pressure gauge for monitoring the hydraulic pressure is installed on the outer wall of the oil inlet pipe, and a shut-off valve for controlling the inflow and outflow of oil is installed on the outer wall of the oil inlet pipe on one side of the oil pressure gauge.

[0011] Preferably, the fine filter and the leak-proof filter are glass fiber filters, with the fine filter located on the side closer to the oil pipe and the leak-proof filter located on the side farther from the oil pipe.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This invention incorporates a filtration mechanism. During operation, the oil flows through the power steering pump body into the steering system and then back to the oil tank for recycling. During this circulation, metal debris continues to move with the oil. When oil containing metal debris or impurities enters the filter cartridge, larger impurities are blocked by the fine filter screen, while metal debris is attracted by a magnet through the fine filter screen. Due to prolonged rinsing, the metal debris is washed off. Therefore, a leak-proof filter screen is installed on the other side of the magnet to block the washed-off metal debris, thus preventing it from re-entering the power steering pump body or the circulating oil circuit. Attached Figure Description

[0014] Figure 1 A schematic diagram of the overall structure of a car power steering pump with stable flow rate;

[0015] Figure 2 A schematic diagram of the overall back structure of a car power steering pump with stable flow rate;

[0016] Figure 3 A schematic diagram showing the disassembled filter mechanism in a car power steering pump with stable flow rate;

[0017] Figure 4 This is a schematic diagram of the structure of a filter cartridge in a car power steering pump with stable flow rate.

[0018] In the picture:

[0019] 1. Power pump body; 2. Pulley; 3. Oil inlet pipe; 4. Filter mechanism; 41. First protective shell; 411. Flange; 412. Second protective shell; 42. Flow oil pipe; 43. Sealing ring; 44. Filter cartridge; 441. Magnet; 442. Fine filter screen; 443. Leak-proof filter screen; 45. Positioning rod; 46. Positioning bolt; 5. Oil drain pipe; 6. Shut-off valve; 7. Oil pressure gauge. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0021] Please see Figures 1-4 As shown, this utility model provides a technical solution: a power steering pump with stable flow rate, including a power steering pump body 1, a pulley 2 fixedly connected to the drive end of the power steering pump body 1, an oil inlet pipe 3 fixedly connected to the oil inlet end of the power steering pump body 1, an oil outlet pipe 5 connected to the steering system fixedly connected to the oil outlet end of the power steering pump body 1, and a filter mechanism 4 for filtering oil is provided at the end of the oil inlet pipe 3 away from the power steering pump body 1.

[0022] It should be noted that the power steering pump body 1 is connected to the pulley 2 and driven by the pulley 2. The power transmission is stable, which can ensure the continuous and stable operation of the power steering pump body 1, providing stable power support for the steering system and ensuring the smoothness and reliability of the vehicle steering. The oil inlet pipe 3 and the oil outlet pipe 5 are connected to the oil inlet end and the oil outlet end of the power steering pump body 1, respectively, and the oil outlet pipe 5 is connected to the steering system. This design allows the oil to smoothly enter and exit the power steering pump body 1, forming a stable oil circulation, which helps to maintain the stable flow of the power steering pump, thereby improving the response speed and accuracy of the steering system. A filter mechanism 4 is set at the end of the oil inlet pipe 3 away from the power steering pump body 1. The filter mechanism 4 can effectively filter the oil entering the power steering pump body 1, remove impurities and particles, prevent impurities from causing wear on the internal parts of the power steering pump, extend the service life of the power steering pump, and at the same time prevent impurities from entering the steering system and affecting its normal operation.

[0023] As one implementation method in this embodiment, please refer to Figure 3 and Figure 4 As shown, the filter mechanism 4 includes a first protective shell 41 and a second protective shell 412. Flanges 411 are fixedly connected to opposite sides of the first protective shell 41 and the second protective shell 412. Several mounting holes are arranged in a ring array on the outer wall of both flanges 411. A positioning bolt 46 for locking is installed on the outer wall of one of the flanges 411 at the position corresponding to the mounting hole. The end of the positioning bolt 46 is locked with a nut. A filter cylinder 44 is provided inside the first protective shell 41. Six positioning rods 45 are fixedly connected to both sides of the outer wall of the filter cylinder 44. The two sets of positioning rods 45 are in contact with the inner sidewalls of the first protective shell 41 and the second protective shell 412, respectively. A magnet 441 for adsorbing iron filings is fixedly connected to the middle of the inner sidewall of the filter cylinder 44. A fine filter screen 442 and a leak-proof filter screen 443 are fixedly connected to both sides of the magnet 441 inside the filter cylinder 44, respectively.

[0024] It should be noted that the first protective shell 41 and the second protective shell 412 can be easily disassembled and assembled through the cooperation of flange 411, mounting holes, positioning bolts 46 and nuts, which facilitates subsequent maintenance and replacement of filter cartridge 44, reducing maintenance costs and time costs. The positioning rods 45 on both sides of filter cartridge 44 contact the inner wall of the protective shell, ensuring that filter cartridge 44 is installed firmly and does not shake during operation, ensuring the stability of the filtration process and effectively filtering the oil. The magnet 441 in the middle of the inner wall of filter cartridge 44 can attract iron filings in the oil, preventing iron filings from entering the booster pump body 1, avoiding wear on the internal parts of the booster pump, and extending the service life of the booster pump. The fine filter screen 442 and the leak-proof filter screen 443 located on both sides of the magnet 441 inside the filter cartridge 44 can further filter impurities in the oil and improve the cleanliness of the oil. The leak-proof filter screen 443 can prevent impurities from leaking out of the filter cartridge 44, ensuring the filtration effect.

[0025] As one implementation method in this embodiment, please refer to Figure 3 and Figure 4 As shown, a sealing ring 43 to prevent oil leakage is embedded on the opposite side of the first protective shell 41 and the second protective shell 412. A flow oil pipe 42 for connecting to an external oil tank is threadedly connected to the center of the side of the second protective shell 412 away from the flange 411. The fine filter screen 442 and the leak-proof filter screen 443 are specifically glass fiber filters. The fine filter screen 442 is located on the side close to the flow oil pipe 42, and the leak-proof filter screen 443 is located on the side away from the flow oil pipe 42.

[0026] It should be noted that the sealing rings 43 embedded on the opposite side of the first protective shell 41 and the second protective shell 412 can effectively prevent oil leakage during the filtration process, avoid oil waste, and prevent oil leakage from damaging other components, ensuring the cleanliness and normal operation of the entire power assist system. The flow oil pipe 42, which is threaded at the center of the side of the second protective shell 412 away from the flange 411, facilitates connection to the external oil tank, allowing the oil to smoothly enter the filter mechanism 4 for filtration, ensuring the continuity of oil circulation. The fine filter screen 442 and the leak-proof filter screen 443 are made of glass fiber, which has good filtration performance and durability. The fine filter screen 442 is located on the side close to the flow oil pipe 42, which can perform preliminary fine filtration on the incoming oil and remove most of the impurities. The leak-proof filter screen 443 is located on the side away from the flow oil pipe 42, which can prevent the leakage of incompletely filtered impurities, further ensuring the filtration effect.

[0027] As one implementation method in this embodiment, please refer to Figure 1 and Figure 2 As shown, an oil pressure gauge 7 for monitoring the hydraulic pressure is installed on the outer wall of the oil inlet pipe 3, and a shut-off valve 6 for controlling the inlet and outlet of the oil is installed on the outer wall of the oil inlet pipe 3 on one side of the oil pressure gauge 7.

[0028] It should be noted that the oil pressure gauge 7 can monitor the oil pressure in the oil inlet pipe 3 in real time. Maintenance personnel can observe the reading of the oil pressure gauge 7 to understand whether the oil pressure is within the normal range. If the pressure is abnormal, measures can be taken to avoid damage to the power steering pump body 1 due to excessively high or low oil pressure. For example, excessively high pressure may cause damage to the internal parts of the power steering pump due to excessive pressure, while excessively low pressure may affect the normal working performance of the power steering pump, thereby ensuring the service life of the power steering pump and the stable operation of the steering system. The shut-off valve 6 is installed on the outer wall of the oil inlet pipe 3 and is located on the side of the oil pressure gauge 7. When it is necessary to perform maintenance on the power steering pump, replace the filter mechanism 4, etc., the operator can easily control the inlet and outlet of the oil by shutting off the oil supply, preventing oil leakage, ensuring the safety and cleanliness of the operating environment, and reducing oil waste.

[0029] Working principle: The main body 1 of the power booster pump operates under the drive of the pulley 2. The oil enters the filter mechanism 4 from the external oil tank through the flow oil pipe 42. In the filter mechanism 4, the oil enters the filter cartridge 44 inside the first protective shell 41 and the second protective shell 412. Since the oil is recycled in the power booster system, impurities such as metal shavings will be generated during the circulation process.

[0030] When oil containing metal fragments enters the filter cartridge 44, the fine filter screen 442 near the flow oil pipe 42 first comes into play. Its glass fiber material effectively blocks larger impurities in the oil, preventing them from entering the booster pump body 1. The metal fragments in the oil pass through the fine filter screen 442 and are attracted by the magnet 441 in the middle of the inner wall of the filter cartridge 44, thereby removing the metal fragments from the oil. However, under the long-term flushing of the oil, some of the attracted metal fragments may be washed off. At this time, the leak-proof filter screen 443 located on the side of the magnet 441 away from the flow oil pipe 42 comes into play. It can block these washed-off metal fragments and prevent them from re-entering the booster pump body 1. At the same time, the sealing ring 43 embedded on the opposite side of the first protective shell 41 and the second protective shell 412 can prevent oil leakage.

[0031] The filtered oil enters the power steering pump body 1 through the oil inlet pipe 3. The power steering pump body 1 pressurizes the oil and delivers it to the steering system through the oil outlet pipe 5 to provide power steering assistance. In addition, the oil pressure gauge 7 on the outer wall of the oil inlet pipe 3 can display the oil pressure in real time, so that the operator can understand the system status in a timely manner. The shut-off valve 6 can control the oil inlet and outlet when needed, which is convenient for maintenance and repair.

[0032] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A power steering pump for automobiles with stable flow rate, comprising a power steering pump body (1), characterized in that: The drive end of the power steering pump body (1) is fixedly connected to a pulley (2), the oil inlet end of the power steering pump body (1) is fixedly connected to an oil inlet pipe (3), the oil outlet end of the power steering pump body (1) is fixedly connected to an oil outlet pipe (5) connected to the steering system, and a filter mechanism (4) for filtering oil is provided at the end of the oil inlet pipe (3) away from the power steering pump body (1).

2. The automotive power steering pump with stable flow rate according to claim 1, characterized in that: The filter mechanism (4) includes a first protective shell (41) and a second protective shell (412). Flanges (411) are fixedly connected to opposite sides of the first protective shell (41) and the second protective shell (412). The outer walls of the two flanges (411) are provided with a number of mounting holes in an annular array. A positioning bolt (46) for locking is installed on the outer wall of one of the flanges (411) at the position corresponding to the mounting hole. The end of the positioning bolt (46) is locked with a nut.

3. The automotive power steering pump with stable flow rate according to claim 2, characterized in that: The first protective shell (41) is provided with a filter cylinder (44). Six positioning rods (45) are fixedly connected to both sides of the outer wall of the filter cylinder (44). The two sets of positioning rods (45) are in contact with the inner sidewalls of the first protective shell (41) and the second protective shell (412), respectively. A magnet (441) for adsorbing iron filings is fixedly connected to the middle of the inner sidewall of the filter cylinder (44). A fine filter screen (442) and a leak-proof filter screen (443) are fixedly connected to both sides of the magnet (441) inside the filter cylinder (44).

4. The automotive power steering pump with stable flow rate according to claim 3, characterized in that: The first protective shell (41) and the second protective shell (412) are fitted with a sealing ring (43) to prevent oil leakage on the opposite side. The second protective shell (412) is threaded with a flow oil pipe (42) connected to the external oil tank at the center of the side away from the flange (411).

5. The automotive power steering pump with stable flow rate according to claim 1, characterized in that: An oil pressure gauge (7) for monitoring the hydraulic pressure is installed on the outer wall of the oil inlet pipe (3), and a shut-off valve (6) for controlling the inlet and outlet of the oil is installed on the side of the oil pressure gauge (7) on the outer wall of the oil inlet pipe (3).

6. The automotive power steering pump with stable flow rate according to claim 4, characterized in that: The fine filter (442) and the leak-proof filter (443) are specifically glass fiber filters. The fine filter (442) is located on the side close to the flow oil pipe (42), and the leak-proof filter (443) is located on the side away from the flow oil pipe (42).

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