A type of anti-detachment steering pump rotor

Abstract

This invention provides a steering pump rotor designed to prevent detachment, belonging to the field of automotive parts technology. It solves the problem of existing steering pump rotors easily detaching. This anti-detachment steering pump rotor includes a stator and a rotor. The rotor surface has several slots, and blades are slidably connected to the inner cavity of each slot. Annular grooves are formed at the top and bottom of the rotor, and limiting rings are placed inside the inner cavities of these grooves. Sliding grooves that match the limiting rings are formed at the top and bottom of each blade. Several adjusting bolts are threaded through the inner wall of the limiting rings. This invention has the advantages of constraining the blades, preventing them from detaching, and allowing for fine adjustment of the blade positions according to actual usage.

Description

Technical Field

[0001] This utility model belongs to the field of automotive parts technology, and specifically relates to a steering pump rotor that prevents detachment. Background Technology

[0002] The power steering pump is the core power unit in a car's steering system. Its main function is to provide high-pressure fluid to the hydraulic power steering system, helping the driver to turn the steering wheel more easily, reducing the effort required for steering, and improving driving comfort and safety.

[0003] For example, Chinese patent literature discloses a rotor for a power steering pump [Application No.: 202222961948.6; Authorization Announcement No.: CN218717466U], which includes a rotor body, multiple blades, and a spring structure between the rotor slot and the blades to drive the blades to move outward. The spring structure includes a first end, a second end, and a compression spring. A limiting structure between the blades and the rotor body is provided to keep the blades from protruding from the rotor slots.

[0004] The rotor of the aforementioned power steering pump keeps the blades from protruding from the rotor slots, facilitating installation within the stator. However, it lacks a limiting structure. When the power steering pump is rotating at high speed, the blades on the rotor surface lack necessary restraint and are prone to detachment due to excessive centrifugal force. Blade detachment not only causes internal mechanical damage to the power steering pump and leads to hydraulic oil leakage but also directly triggers sudden power steering failure, making the vehicle heavy or uncontrollable, posing a significant threat to driving safety. Furthermore, it lacks adjustment capabilities, making it impossible to finely adjust the blade movement position according to actual usage. When the blades extend too far due to lack of adjustment, they will directly contact the inner wall of the stator, causing severe friction between them. When the blades extend too short, they cannot achieve effective sealing and oil suction / discharge, leading to hydraulic oil leakage and insufficient output pressure from the power steering pump, making it difficult to provide adequate power steering assistance. Summary of the Invention

[0005] The purpose of this invention is to address the aforementioned problems in the prior art by providing an anti-detachment steering pump rotor that can constrain the blades, prevent blade detachment, and allow for fine adjustment of the blade position according to actual usage.

[0006] The purpose of this utility model can be achieved through the following technical solution: a steering pump rotor that prevents detachment, including a stator and a rotor, wherein the surface of the rotor is provided with a plurality of slots, and blades are slidably connected to the inner cavity of the slots; annular grooves are provided at the top and bottom of the rotor, and a limiting ring is placed in the inner cavity of the annular grooves; sliding grooves adapted to the limiting rings are provided at the top and bottom of the blades; and a plurality of adjusting bolts are threadedly connected to the inner wall of the limiting rings.

[0007] This anti-detachment steering pump rotor, through the cooperation of the stator, rotor, slot, blade, annular groove, limit ring, slide groove, adjusting bolt and fastening nut, can constrain the blade and prevent the blade from falling off. It can also make fine adjustments to the blade position according to the actual use to prevent the blade from rubbing against the inner wall of the stator.

[0008] In the aforementioned anti-detachment steering pump rotor, a fastening nut is threaded onto the surface of the adjusting bolt, and the opposite side of the fastening nut contacts the limiting ring. In practical applications, by setting the fastening nut, the adjusting bolt can be tightened after its position is determined, preventing it from loosening due to vibration or other reasons during rotor operation, thus ensuring the stability of the adjustment effect.

[0009] In the aforementioned anti-detachment steering pump rotor, grooves are provided on both sides of the top of the limiting ring. A limiting bolt is movably connected through the bottom of the groove's inner cavity, and the bottom end of the limiting bolt is threaded to the rotor. In practical applications, by providing the grooves and limiting bolts, the limiting ring can be fixed within the annular groove, preventing displacement or detachment during rotor rotation and ensuring the stable constraint effect of the limiting ring on the blades.

[0010] In the aforementioned anti-detachment steering pump rotor, the rotor is located inside the stator, and a spline groove is formed inside the rotor. In practical applications, the spline groove facilitates the transmission of external power to the rotor, driving its rotation; it is a key structure for power transmission.

[0011] In the aforementioned anti-detachment steering pump rotor, ball bearings are embedded on opposite sides of the limiting ring, and the surfaces of the ball bearings contact the blades. In practical applications, by incorporating ball bearings, the sliding friction between the blades and the limiting ring can be converted into rolling friction, reducing the frictional force between them, lowering wear, and making the blades slide more smoothly.

[0012] Compared with existing technologies, the advantages of this anti-detachment steering pump rotor are: it can constrain the blades to prevent them from falling off, and the blade position can be finely adjusted according to actual usage. Attached Figure Description

[0013] Figure 1 This is a 3D view of the rotor of this anti-detachment steering pump.

[0014] Figure 2 This is a 3D view of the rotor structure of the anti-detachment steering pump rotor.

[0015] Figure 3 This is a partial three-dimensional view of the rotor structure of the anti-detachment steering pump.

[0016] Figure 4 This is a 3D view of the limiting ring structure of the anti-detachment steering pump rotor.

[0017] Figure 5 This is a steering pump rotor structure designed to prevent detachment. Figure 1 A magnified view of A in the middle.

[0018] Figure 6 This is a steering pump rotor structure designed to prevent detachment. Figure 3 A magnified view of B in the middle.

[0019] Figure 7 This is a three-dimensional bottom view of a portion of the rotor structure of this anti-detachment steering pump.

[0020] In the diagram, 1 is the stator; 2 is the rotor; 3 is the slot; 4 is the blade; 5 is the annular groove; 6 is the limiting ring; 7 is the slide groove; 8 is the adjusting bolt; 9 is the fastening nut; 10 is the limiting bolt; 11 is the spline groove; 12 is the ball; and 13 is the groove. Detailed Implementation

[0021] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0022] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the anti-detachment steering pump rotor includes a stator 1 and a rotor 2. Several slots 3 are provided on the surface of the rotor 2. Blades 4 are slidably connected to the inner cavity of the slots 3. Annular grooves 5 are provided at the top and bottom of the rotor 2. Limiting rings 6 are placed in the inner cavity of the annular grooves 5. Sliding grooves 7 that are adapted to the limiting rings 6 are provided at the top and bottom of the blades 4. Several adjusting bolts 8 are threadedly connected to the inner wall of the limiting rings 6.

[0023] To elaborate further, a fastening nut 9 is threaded onto the surface of the adjusting bolt 8, and the opposite side of the fastening nut 9 is in contact with the limiting ring 6. Grooves 13 are provided on both sides of the top of the limiting ring 6, and a limiting bolt 10 is movably connected through the bottom of the inner cavity of the groove 13. The bottom end of the limiting bolt 10 is threadedly connected to the rotor 2.

[0024] The rotor 2 is located inside the stator 1, and a spline groove 11 is provided inside the rotor 2. Ball bearings 12 are embedded on opposite sides of the limiting ring 6, and the surface of the ball bearings 12 is in contact with the blade 4.

[0025] In actual manufacturing, blade 4 is inserted into slot 3, and then limiting ring 6 is placed inside annular groove 5. Limiting ring 6 is installed and fixed by limiting bolt 10. At this time, blade 4 is located inside the upper and lower limiting rings 6. Under the action of limiting ring 6, blade 4 can be prevented from falling off. When rotor 2 rotates at high speed, blade 4 is subjected to centrifugal force and begins to move. When fine adjustment of the position of blade 4 is required, rotating adjusting bolt 8 causes the adjusting bolt 8 to move. After adjustment, tightening fastening nut 9 limits and fixes adjusting bolt 8. When blade 4 moves to the preset position, the inner wall of slide groove 7 contacts adjusting bolt 8. Under the action of adjusting bolt 8, blade 4 can be limited so that it does not extend too long on the surface of rotor 2.

[0026] Contents not described in detail herein are existing technologies known to those skilled in the art. The specific embodiments described herein are merely illustrative examples illustrating the spirit of this invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this invention or exceeding the scope defined by the appended claims.

Claims

1. A retention-free steering pump rotor comprising a stator (1) and a rotor (2), characterized in that: The rotor (2) has several slots (3) on its surface. The inner cavity of the slot (3) is slidably connected to a blade (4). The top and bottom of the rotor (2) are provided with annular grooves (5). A limiting ring (6) is placed in the inner cavity of the annular groove (5). The top and bottom of the blade (4) are provided with sliding grooves (7) that are adapted to the limiting ring (6). The inner wall of the limiting ring (6) is threaded with several adjusting bolts (8).

2. The anti-detachment steering pump rotor according to claim 1, characterized in that, The adjusting bolt (8) is threaded with a fastening nut (9), and the opposite side of the fastening nut (9) is in contact with the limiting ring (6).

3. The anti-detachment steering pump rotor according to claim 1, characterized in that, The limiting ring (6) has grooves (13) on both sides of its top. The bottom of the inner cavity of the groove (13) is movably connected to a limiting bolt (10). The bottom end of the limiting bolt (10) is threadedly connected to the rotor (2).

4. The anti-detachment steering pump rotor according to claim 1, characterized in that, The rotor (2) is located inside the stator (1), and a spline groove (11) is provided inside the rotor (2).

5. The anti-detachment steering pump rotor according to claim 1, characterized in that, The limiting ring (6) is fitted with balls (12) on the opposite side, and the surface of the balls (12) is in contact with the blade (4).

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