High-wear-resistance rotor of power steering pump

Abstract

The utility model relates to a highly wear-resistant rotor of a power steering pump, which comprises a rotor body, the rotor body is provided with a plurality of rotor grooves, each rotor groove is internally connected with a blade in a sliding manner, and an elastic structure is arranged between the bottom wall of each rotor groove and each blade; a communicating annular channel is formed in the rotor body, a lubricating system communicated with the communicating annular channel is arranged on the circumferential side wall of the rotor body, oil enters the communicating annular channel through an oil inlet pipe and flows out through a first lubricating hole, and the outer curved surface of the rotor body is lubricated. Therefore, the friction force between the rotor body and the stator in a high-pressure environment is reduced, the wear resistance of the rotor body is improved, the wear degree of the rotor body is delayed, and the service life of the power steering pump is prolonged.

Description

Technical Field

[0001] The utility model relates to a power steering pump, in particular to a rotor of a high-wear-resistant power steering pump. Background Art

[0002] The rotor of the power steering pump is an important component in the power steering system. It is located inside the power steering pump and is responsible for converting the engine's power into hydraulic power, thereby helping the vehicle to steer more easily. Long-term friction between the rotor and the stator will cause wear and affect the performance of the power steering pump. In response to this, suppliers on the market have developed a power steering pump rotor with high wear resistance to improve the overall wear resistance of the power steering pump.

[0003] However, if the vehicle is started in cold weather and is idling, the viscosity of the power steering oil will increase, resulting in insufficient speed of the power steering pump, which in turn leads to insufficient centrifugal force when the blades are thrown out, affecting the output of the power steering oil and the effect of the power steering.

[0004] In response to the above situation, a rotor of a power steering pump with announcement number CN218717466U is provided, in which a spring is provided between the bottom of the rotor slot and the blade, thereby reducing the friction between the blade and the inner wall of the stator, thereby improving the smoothness of operation.

[0005] The rotor in the above patent works under high pressure conditions, and the friction between the rotor body and the stator is large, which easily causes stator wear, reduces the sealing between the rotor body and the side plate, and shortens the service life. To address this problem, we propose a highly wear-resistant rotor for a power steering pump. Utility Model Content

[0006] The utility model provides a rotor of a high-wear-resistant power steering pump, which solves the above-mentioned problems existing in the use process of the prior art.

[0007] The technical solution of the utility model is achieved as follows: a rotor of a high-wear-resistant power steering pump includes a rotor body, a plurality of rotor slots are formed on the rotor body, a blade is slidably connected in each of the rotor slots, and an elastic structure is provided between the bottom wall of the rotor slot and the blade;

[0008] A communication ring channel is provided in the rotor body, and a lubrication system communicating with the communication ring channel is provided on the circumferential side wall of the rotor body.

[0009] The present invention is further configured as follows: the lubrication system includes a plurality of oil inlet pipes communicating with the communication ring, and the oil inlet pipes are vertically penetrated and opened on the rotor body;

[0010] A plurality of No. 1 lubrication holes communicating with the communication ring are provided on the outer curved surface of the rotor body.

[0011] The present invention is further configured as follows: a bottom wall of each of the rotor slots is provided with a propulsion hole communicating with the communication ring channel;

[0012] A second lubrication hole is provided on the side wall of the blade and passes through the outer curved surface of the rotor body.

[0013] The present invention is further configured as follows: the elastic structure includes a plurality of springs, and the springs are connected between the bottom wall of the rotor slot and the blades.

[0014] The present invention is further configured as follows: a limiting groove is provided on the side wall of the rotor groove; a limiting slider is fixedly connected to the blade; and the limiting slider is slidably connected in the limiting groove.

[0015] The present invention is further configured as follows: a rubber plug is fixedly connected to the bottom wall of the limiting groove, an embedding groove is provided on the limiting sliding block, and the rubber plug is embedded in the embedding groove.

[0016] The present invention is further configured such that: the cross-sectional area of ​​the rubber stopper is larger than the cross-sectional area of ​​the embedding groove.

[0017] In summary, the beneficial effects of the present invention are:

[0018] The oil enters the connecting ring through the oil inlet pipe and flows out through the No. 1 lubrication hole to lubricate the outer curved surface of the rotor body, thereby reducing the friction between the rotor body and the stator under high pressure, improving the wear resistance of the rotor body, delaying the wear of the rotor body, and thus extending the service life of the power steering pump;

[0019] The oil enters the rotor slot through the propulsion hole and assists the spring to push the blades outward to ensure that the power steering pump can still provide sufficient power steering oil in a low temperature environment, thereby ensuring the power steering effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 for Figure 1 A partial enlarged schematic diagram in the middle;

[0023] Figure 3 This is a schematic diagram of the structure of the lubrication system in the utility model;

[0024] Figure 4 It is a structural schematic diagram of the utility model from another perspective;

[0025] Figure 5 for Figure 4 A partial enlarged schematic diagram of point B in the middle.

[0026] Numbers in the figure: 11, rotor body; 12, rotor slot; 13, blade; 14, connecting ring; 15, oil inlet pipe; 16, No. 1 lubrication hole; 17, thrust hole; 18, spring; 19, limit slot; 20, limit slider; 21, rubber plug; 22, embedding slot; 23, No. 2 lubrication hole. DETAILED DESCRIPTION

[0027] The following is a combination of the appended examples of the present invention Figure 1-5 , clearly and completely describes the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0028] Example:

[0029] like Figures 1 to 5 As shown, a rotor of a high-wear-resistant power steering pump includes a rotor body 11. A plurality of rotor slots 12 are formed on the rotor body 11. A blade 13 is slidably connected in each rotor slot 12. A spring 18 is connected between the bottom wall of the rotor slot 12 and the blade 13. When the power steering pump is operating, the spring 18 pushes the blade 13 out of the rotor slot 12 to ensure that the power steering pump can squeeze out a sufficient amount of power steering oil in a low-temperature environment to ensure the power steering effect.

[0030] A connecting ring 14 is provided in the rotor body 11. Several oil inlet pipes 15 are provided through the rotor body 11 from top to bottom, and the oil inlet pipes 15 are communicated with the connecting ring 14. Oil enters the connecting ring 14 through the oil inlet pipes 15, and several No. 1 lubrication holes 16 communicated with the connecting ring 14 are provided on the outer curved surface of the rotor body 11. After the oil enters the connecting ring 14 through the oil inlet pipes 15, it flows out through each of the No. 1 lubrication holes 16 and lubricates the outer curved surface of the rotor body 11, thereby reducing the friction between the rotor body 11 and the inner wall of the stator under high pressure environment, thereby improving the wear resistance of the rotor body 11.

[0031] Furthermore, a propulsion hole 17 communicating with the communication annular channel 14 is formed on the bottom wall of each rotor slot 12. Part of the oil in the communication annular channel 14 enters the rotor slot 12 through the propulsion hole 17, thereby pushing the blades 13 to move out of the rotor slot 12. This ensures that the power steering pump can still deliver sufficient power steering oil under high pressure, thereby ensuring the power steering effect.

[0032] A second lubrication hole 23 is provided on the side wall of the rotor slot 12 and passes through the outer curved surface of the rotor body 11. The oil in the rotor slot 12 flows out through the second lubrication hole 23 and flows into the space between the rotor body 11 and the inner wall of the stator, thereby preventing the oil from accumulating in the rotor slot 12 and further lubricating the outer curved surface of the rotor body 11, thereby improving the wear resistance of the rotor body 11.

[0033] In addition, a limiting groove 19 is provided on the side wall of the rotor slot 12, and a limiting slider 20 is fixedly connected to the blade 13. The limiting slider 20 is slidably connected to the limiting groove 19. The above structure prevents the blade 13 from falling off from the rotor slot 12 due to centrifugal force.

[0034] In addition, a rubber plug 21 is fixedly connected to the bottom wall of the limiting groove 19, and an embedding groove 22 is provided on the limiting slider 20. After the blade 13 is thrown outward by the centrifugal force, it will retract into the rotor groove 12 again. The cross-sectional area of ​​the rubber plug 21 should be slightly larger than the cross-sectional area of ​​the embedding groove 22. During this process, the rubber plug 21 is squeezed toward the embedding groove 22, thereby buffering the blade 13 and preventing the blade 13 from being damaged due to excessive centrifugal force.

[0035] It should also be pointed out that the terms indicated in the present invention, such as: "front", "rear", "vertical", "horizontal", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as limiting the scope of protection of the present invention.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A rotor of a high-wear-resistant power steering pump, comprising a rotor body (11), characterized in that: The rotor body (11) is provided with a plurality of rotor slots (12), each of the rotor slots (12) is slidably connected to a blade (13), and an elastic structure is provided between the bottom wall of the rotor slot (12) and the blade (13); A communication ring channel (14) is provided in the rotor body (11), and a lubrication system communicating with the communication ring channel (14) is provided on the circumferential side wall of the rotor body (11).

2. The high-wear-resistant power steering pump rotor according to claim 1, characterized in that: The lubrication system includes a plurality of oil inlet pipes (15) communicating with the communication ring (14), and the oil inlet pipes (15) are vertically penetrated and opened on the rotor body (11); A plurality of No. 1 lubrication holes (16) communicating with the communication annular channel (14) are provided on the outer curved surface of the rotor body (11).

3. The high wear-resistant power steering pump rotor according to claim 1, characterized in that: The bottom wall of each rotor slot (12) is provided with a propulsion hole (17) communicating with the communication annular channel (14); A second lubrication hole (23) is provided on the side wall of the blade (13) and passes through the outer curved surface of the rotor body (11).

4. The high-wear-resistant rotor of a power steering pump according to claim 1, characterized in that: The elastic structure includes a plurality of springs (18), and the springs (18) are connected between the bottom wall of the rotor slot (12) and the blade (13).

5. The high wear-resistant power steering pump rotor according to claim 1, characterized in that: A limiting slot (19) is provided on the side wall of the rotor slot (12), a limiting slider (20) is fixedly connected to the blade (13), and the limiting slider (20) is slidably connected in the limiting slot (19).

6. The high-wear-resistant power steering pump rotor according to claim 5, characterized in that: A rubber plug (21) is fixedly connected to the bottom wall of the limiting groove (19), an embedding groove (22) is provided on the limiting slider (20), and the rubber plug (21) is embedded in the embedding groove (22).

7. The high-wear-resistant rotor of a power steering pump according to claim 6, characterized in that: The cross-sectional area of ​​the rubber stopper (21) is larger than the cross-sectional area of ​​the embedding groove (22).

Images