A steering assist pump capable of suppressing blade swing and jam

Abstract

The utility model relates to the technical field of steering assist pump, concretely is a kind of steering assist pump of inhibiting vane swing and jam, the utility model includes steering assist pump body and rotator detachably installed in the inside of steering assist pump body, the outer ring of the rotator is provided with stator.The utility model is provided with spring and ball, when driving shaft drives rotator to rotate, vane due to centrifugal force will contact with the inner ring face of stator and produce friction force, friction force will make vane produce deviation in recess, deviation changes with the length change of vane extending recess, to cause vane swing;By the elastic force of spring in installation groove, to offset friction force, to reduce the friction of vane and recess opening, to reduce abrasion, effectively prolong the service life of vane.

Description

Technical Field

[0001] This utility model relates to the field of power steering pump technology, specifically a power steering pump that suppresses blade oscillation and jamming. Background Technology

[0002] The power steering pump is a core component of a car's steering system. Its main function is to provide hydraulic assistance for steering operations, reducing the driver's steering effort. Essentially a hydraulic pump, it is typically driven by the engine via a belt. During operation, it pressurizes hydraulic oil and delivers it to the power steering unit. The hydraulic energy is converted into mechanical energy, assisting the steering gear mechanism in turning the steering wheels. It is a key component for achieving easy steering control in modern cars and is widely used in various passenger and commercial vehicles.

[0003] As disclosed in Chinese Patent No. CN219432045U, a power steering pump blade includes a rotor and a stator. The rotor has multiple grooves inside. Multiple blade bodies are snapped together between the rotor, stator, and grooves. Multiple oil grooves are provided at the front and rear ends of the multiple blade bodies. The multiple blade bodies include a first wear-resistant layer. A first sealing layer is fixedly provided at the rear end of the first wear-resistant layer. A reinforcement layer is fixedly provided at the rear end of the first sealing layer. A rust-proof layer is fixedly provided at the rear end of the reinforcement layer.

[0004] To address the issue of insufficient blade strength and easy deformation in existing power steering pumps, current technology employs a robust layer to create a mesh structure, making the internal structure of the blades more robust. However, this approach still results in a large oscillation arc when the blades slide within the grooves during rotor rotation, leading to damage and jamming of the blade surface. Therefore, we propose a power steering pump that suppresses blade oscillation and jamming. Utility Model Content

[0005] The purpose of this invention is to provide a steering power pump that suppresses blade oscillation and jamming, so as to solve the problems mentioned in the background art.

[0006] The objective of this utility model can be achieved through the following technical solutions: A power steering pump for suppressing blade oscillation and jamming includes a power steering pump body and a rotor detachably installed inside the power steering pump body. The outer ring of the rotor is provided with a stator, which is detachably installed inside the power steering pump body. Multiple grooves are equidistantly formed on the outer circumference of the rotor, and blades are slidably connected in each of the multiple grooves. The outer ends of the multiple blades respectively abut against the inner ring surface of the stator.

[0007] The rotor is also provided with multiple mounting slots at equal intervals on its outer circumference to cooperate with the blades. Springs are placed in the inner cavity of each mounting slot. A round block is fixedly connected to the bottom end of each spring. A ball is rotatably sleeved on the bottom end of each round block. The bottom end of each ball is movably abutting against one side wall plate of each blade.

[0008] Preferably, the upper and lower wall plates of the inner cavity of the plurality of mounting slots are fixedly connected with limiting arc plates for limiting the springs. The plurality of limiting arc plates are respectively in movable contact with the plurality of springs. The top ends of the plurality of springs are respectively in movable contact with the top wall of the inner cavity of the plurality of mounting slots. The side of the plurality of springs away from the limiting arc plates is movably in contact with a buffer plate. The side of the plurality of buffer plates away from the springs is fixedly connected with a limiting block.

[0009] Preferably, a set of mounting plates is fixedly connected to the inner cavity of each mounting slot, each set containing two mounting plates, which are respectively located on both sides of the inner cavity of the mounting slot; the mounting plates are provided with threaded holes on the outside; the limiting block is provided with a set of through holes on the outside, each set of through holes having two holes, which are respectively located on both sides of the limiting block; bolts are inserted into the through holes, and the bolts are threadedly connected to the threaded holes.

[0010] Preferably, an oil outlet is fixedly installed on the outside of the power steering pump body, and an oil inlet is also fixedly installed on the outside of the power steering pump body.

[0011] Preferably, the inner annular surface of the rotor is meshed with a drive shaft, and a pulley is fixedly connected to the end of the drive shaft away from the rotor.

[0012] Preferably, the threaded holes and through holes are threadedly engaged with the bolts in a one-to-one correspondence, and the limiting block is used to block the mounting groove. The number of mounting grooves and blades is the same.

[0013] The beneficial effects of this utility model are: This invention utilizes a spring and ball bearing configuration. When the drive shaft rotates the rotor, the blades, due to centrifugal force, come into contact with the inner ring surface of the stator and generate friction. This friction causes the blades to deviate within the groove, with the amount of deviation varying depending on the length of the blade extending out of the groove, resulting in blade oscillation. The spring force preset within the mounting groove counteracts this friction, thereby reducing friction between the blades and the groove opening. This prevents excessive blade oscillation and friction damage to the groove opening, or jamming, effectively extending the blades' service life. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the overall internal structure of this utility model; Figure 3 This is a schematic diagram of the overall partial structure of this utility model; Figure 4 yes Figure 3 Enlarged structural diagram at point A; Figure 5 This is a utility model Figure 4 A schematic diagram of the structure of local decomposition.

[0015] Reference numerals in the attached diagram: 1. Pulley; 2. Oil outlet; 3. Oil inlet; 4. Power steering pump body; 5. Drive shaft; 6. Stator; 7. Rotor; 8. Groove; 9. Blade; 10. Mounting groove; 11. Spring; 12. Round block; 13. Ball bearing; 14. Limiting block; 15. Buffer plate; 16. Mounting plate; 17. Threaded hole; 18. Through hole; 19. Bolt; 20. Limiting arc plate. Detailed Implementation

[0016] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0017] like Figures 1-5As shown, a power steering pump for suppressing blade oscillation and jamming includes a power steering pump body 4 and a rotor 7 detachably installed inside the power steering pump body 4. A stator 6 is provided on the outer ring of the rotor 7, and the stator 6 is detachably installed inside the power steering pump body 4. Multiple grooves 8 are equidistantly provided on the outer circumference of the rotor 7, and blades 9 are slidably connected within each groove 8. The outer ends of the blades 9 respectively movably abut against the inner ring surface of the stator 6. Multiple mounting slots 10 for cooperating with the blades 9 are also equidistantly provided on the outer circumference of the rotor 7. Springs 11 are placed inside the cavities of each mounting slot 10. The bottom of each spring 11... Each end is fixedly connected with a round block 12. The bottom end of each round block 12 is rotatably fitted with a ball bearing 13. The bottom end of each ball bearing 13 is movably abutting against one side wall plate of each blade 9. The upper and lower wall plates of the inner cavity of each mounting groove 10 are fixedly connected with limiting arc plates 20 for limiting the spring 11. Each limiting arc plate 20 is movably fitted with each spring 11. The top end of each spring 11 is movably abutting against the top wall of the inner cavity of each mounting groove 10. Each side of each spring 11 away from the limiting arc plate 20 is movably fitted with a buffer plate 15. Each side of each buffer plate 15 away from the spring 11 is fixedly connected with a limiting block 14.

[0018] In specific implementation, the spring 11 is compressed and placed in the mounting groove 10, with the top of the spring 11 abutting against the top of the inner cavity of the mounting groove 10 and the bottom of the ball 13 abutting against the blade 9. The spring 11 is limited by the limiting arc plate 20 and the limiting block 14. When the drive shaft 5 drives the rotor 7 to rotate, the blade 9 will slide out and contact the inner ring surface of the stator 6 due to centrifugal force. After contacting the stator 6, friction will be generated. The friction will cause the blade 9 to tilt in the groove 8. The elastic force of the spring 11 in the mounting groove 10 is used to apply pressure to the blade 9 to counteract the friction of the blade 9, thereby avoiding excessive swinging of the blade 9 and friction damage to the opening of the groove 8, or jamming, effectively extending the service life of the blade 9. By using the ball bearing 13 to contact the blade 9, the rolling action of the ball bearing 13 can reduce the friction on the blade 9, thereby protecting the blade 9.

[0019] As a technical optimization of this utility model, a set of mounting plates 16 are fixedly connected to the inner cavity of multiple mounting slots 10. There are two mounting plates 16 in a set, which are located on both sides of the inner cavity of the mounting slots 10. Threaded holes 17 are opened on the outside of multiple mounting plates 16. A set of through holes 18 is opened on the outside of multiple limiting blocks 14. There are two through holes 18 in a set, which are located on both sides of the limiting blocks 14. Bolts 19 are threadedly sleeved between multiple sets of threaded holes 17 and through holes 18, and there are two bolts 19 in a set.

[0020] In specific implementation, by using the limiting arc plate 20 and the buffer plate 15, the spring 11 can be prevented from shifting due to the centrifugal force generated by the rotation of the drive shaft 5. By using the buffer plate 15, the spring 11 can be buffered when it comes into contact with the buffer plate 15, thereby extending the service life of the spring 11. By removing the bolt 19 and taking the limit block 14 out of the mounting slot 10, the spring 11 can be replaced, enhancing the practicality of the device.

[0021] As a technical optimization of this utility model, an oil outlet 2 is fixedly installed on the outside of the power steering pump body 4, and an oil inlet 3 is also fixedly installed on the outside of the power steering pump body 4. The inner ring surface of the rotor 7 is meshed with a drive shaft 5, and a pulley 1 is fixedly connected to the end of the drive shaft 5 away from the rotor 7. The threaded hole 17 and the through hole 18 are threadedly engaged with the bolt 19 in a one-to-one correspondence. The limiting block 14 is used to block the mounting groove 10. The number of mounting grooves 10 and blades 9 is the same. It should be noted that the rotor 7 and the drive shaft 5 are driven by a key-pin engagement.

[0022] In practice, pulley 1 is connected to the power source. Pulley 1 drives rotor 7 to rotate through drive shaft 5. Blade 9 abuts against the inner ring surface of stator 6 under the centrifugal force of rotor 7. Blade 9, which rotates with rotor 7, delivers hydraulic oil from oil inlet 3 to oil outlet 2.

[0023] In use, the spring 11 is compressed and placed in the mounting groove 10, with the top of the spring 11 abutting against the top of the inner cavity of the mounting groove 10, and the bottom of the ball bearing 13 abutting against the blade 9. The spring 11 is limited by the limiting arc plate 20 and the limiting block 14. The pulley 1 is connected to the power source, and the pulley 1 drives the rotor 7 to rotate through the drive shaft 5. Under the centrifugal force of the rotor 7, the blade 9 abuts against the inner ring surface of the stator 6. After contacting the stator 6, friction is generated. The elastic force of the spring 11 in the mounting groove 10 is used to apply pressure to the blade 9 to counteract the friction of the blade 9. The rotating blade 9 of the rotor 7 delivers the hydraulic oil from the oil inlet 3 to the oil outlet 2. When the spring 11 needs to be replaced, the limiting block 14 can be removed from the mounting groove 10 by removing the bolt 19, and the spring 11 can be replaced.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A power steering pump for suppressing blade oscillation and jamming, comprising a power steering pump body (4) and a rotor (7) detachably installed inside the power steering pump body (4), characterized in that, The rotor (7) is provided with a stator (6) on its outer ring. The stator (6) is detachably installed inside the power steering pump body (4). Multiple grooves (8) are provided at equal intervals on the outer circumference of the rotor (7). Blades (9) are slidably connected in each of the multiple grooves (8). The outer ends of the multiple blades (9) respectively abut against the inner ring surface of the stator (6). The rotor (7) is also provided with multiple mounting slots (10) at equal intervals on its outer circumference, which are used to cooperate with the blades (9). The inner cavity of each mounting slot (10) is filled with a spring (11). The bottom end of each spring (11) is fixedly connected to a round block (12). The bottom end of each round block (12) is rotatably fitted with a ball (13). The bottom end of each ball (13) is in contact with one side wall plate of each blade (9).

2. A power steering pump for suppressing blade oscillation and jamming according to claim 1, characterized in that, The upper and lower walls of the inner cavity of the plurality of mounting slots (10) are fixedly connected with limiting arc plates (20) for limiting the springs (11). The plurality of limiting arc plates (20) are respectively in contact with the plurality of springs (11). The top ends of the plurality of springs (11) are respectively in contact with the top walls of the inner cavity of the plurality of mounting slots (10). The side of the plurality of springs (11) away from the limiting arc plates (20) is movably attached to a buffer plate (15). The side of the plurality of buffer plates (15) away from the springs (11) is fixedly connected to a limiting block (14).

3. A power steering pump for suppressing blade oscillation and jamming according to claim 2, characterized in that, Each mounting slot (10) has a set of mounting plates (16) fixedly connected to its inner cavity. Each set includes two mounting plates (16) and they are located on both sides of the inner cavity of the mounting slot (10). The mounting plates (16) have threaded holes (17) on their outer surfaces. The limiting block (14) has a set of through holes (18) on its outer surface. Each set of through holes (18) consists of two holes and they are located on both sides of the limiting block (14). Bolts (19) are inserted into the through holes (18) and are threadedly connected to the threaded holes (17).

4. A power steering pump for suppressing blade oscillation and jamming according to claim 1, characterized in that, An oil outlet (2) is fixedly installed on the outside of the power steering pump body (4), and an oil inlet (3) is also fixedly installed on the outside of the power steering pump body (4).

5. A power steering pump for suppressing blade oscillation and jamming according to claim 1, characterized in that, The rotor (7) is connected to a drive shaft (5) via a key pin, and a pulley (1) is fixedly connected to one end of the drive shaft (5) away from the rotor (7).

6. A steering power pump for suppressing blade oscillation and jamming according to claim 3, characterized in that, The threaded holes (17) and through holes (18) are threadedly engaged with the bolts (19) in a one-to-one correspondence. The limiting block (14) is used to block the mounting groove (10). The number of mounting grooves (10) and blades (9) is the same.

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