A pressure relief assembly for an automotive oil pump

Abstract

The utility model discloses a kind of pressure relief components of automobile oil pump, including pump body, the pump body is provided with pressure relief mechanism, the pressure relief mechanism includes pressure relief sleeve, pressure relief pipe, set pressure spring, abutment ring, push plate, connecting rod and pressure regulating mechanism, pressure relief sleeve is fixed in pump body top surface, pressure relief pipe is fixed in pressure relief sleeve bottom surface and is in-depth in pump body set pressure spring is connected in pressure relief sleeve inner wall, pressure relief mechanism is through the synergistic effect of pressure relief sleeve, pressure relief pipe, set pressure spring, abutment ring, push plate and connecting rod arranged on pump body, forms a quick response pressure release system, when the pressure in oil pump pressure oil cavity exceeds preset threshold value, pressure pushes push plate to move and makes sealing ring separate from sealing groove, forms pressure relief passage, effectively prevent the gear overload and power consumption increase problem caused by the internal pressure of oil pump is too high, reduce pipeline vibration and noise simultaneously, improve the working reliability and service life of oil pump.

Description

Technical Field

[0001] This utility model relates to the field of oil pump technology, and more specifically, to a pressure relief component for an automotive oil pump. Background Technology

[0002] In automotive engine lubrication systems, the oil pump, as a key component, needs to maintain a stable and reliable working state to ensure that all engine components receive sufficient and appropriately pressurized lubricating oil. However, oil pumps currently on the market generally suffer from flow pulsation during operation. This is mainly because when the internal drive gear and driven gear rotate in succession, the meshing point changes instantaneously due to the half-tooth gap between the teeth of the drive gear and driven gear. This causes the pressure in the oil pressure chamber to fluctuate when the oil driven by each tooth enters the oil pressure chamber, resulting in uneven oil flow. This flow pulsation phenomenon can cause vibration and noise in pipes and components, which not only affects the smooth operation of the engine but may also lead to accelerated wear of components in the lubrication system and shorten their service life.

[0003] In high-performance engines and commercial vehicles operating under high loads for extended periods, the precision of oil pump pressure control directly impacts engine reliability and fuel economy. When the pressure in the oil chamber increases excessively, the load on the oil pump's drive gear increases significantly. This not only leads to a substantial increase in the oil pump's power consumption, reducing overall fuel economy, but also increases the risk of damage to the oil pump and related components. Existing pressure relief devices generally suffer from inconvenient pressure relief, and their pressure relief valve adjustment mechanisms are simple and crudely designed, making precise adjustment difficult. They cannot flexibly adjust the pressure relief value according to actual needs under different operating conditions and temperature conditions. This pressure relief mechanism, lacking precise adjustment capabilities, results in the oil pump either failing to effectively release excessive pressure or causing insufficient lubrication due to excessive pressure relief, neither of which meets the requirements of modern engines for precise oil pressure control. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] In view of the problems existing in the prior art, this utility model provides a pressure relief component for an automotive oil pump to solve the technical problems mentioned in the background art.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a pressure relief assembly for an automotive oil pump, comprising a pump body, wherein a pressure relief mechanism is provided on the pump body, the pressure relief mechanism comprising a pressure relief sleeve, a pressure relief pipe, a pressure spring, a contact ring, a push plate, a connecting rod, and a pressure regulating mechanism, the pressure relief sleeve being fixed to the top surface of the pump body, the pressure relief pipe being fixed to the bottom surface of the pressure relief sleeve and extending into the pump body, the pressure spring being connected to the inner wall of the pressure relief sleeve, the contact ring being fixed to the bottom end of the pressure spring, the push plate abutting against the inner wall of the pressure relief sleeve, and the connecting rod being fixed to the top surface of the push plate; the pressure regulating mechanism comprising a screw, a transmission sleeve, an adjusting sleeve, a rotating sleeve, a connecting block, a linkage hole, a linkage block, and a sealing plate, the screw rotating at the top end of the connecting rod, the transmission sleeve being threadedly connected to the outer wall of the screw, the adjusting sleeve being fixed to the outer wall of the transmission sleeve, the rotating sleeve rotating at the top end of the pressure relief sleeve, the connecting block being fixed to the bottom surface of the rotating sleeve, the linkage hole being provided inside the connecting block, the linkage block being fixed to the top end of the screw and sliding within the linkage hole, and the sealing plate being fixed to the top end of the linkage block.

[0008] The present invention is further configured such that a sealing ring is installed on the bottom surface of the push plate, and a sealing groove is opened on the inner wall of the pressure relief sleeve. The sealing ring abuts against the sealing groove, and a reliable sealing structure is formed by the tight abutment between the sealing ring and the sealing groove, ensuring no leakage under normal working conditions. At the same time, when the pressure exceeds the threshold, it can separate in time to form a pressure relief channel, thereby achieving precise pressure control.

[0009] The present invention is further configured such that a limiting sleeve is fixedly provided on the inner wall of the pressure relief sleeve, and a through hole is fixedly provided on the limiting sleeve. Multiple sets of through holes are provided. A limiting block is fixedly provided on the top surface of the push plate. Multiple sets of limiting blocks are provided and all are slidably connected to the limiting sleeve. The sliding connection design between the limiting sleeve and the limiting block restricts the movement trajectory of the push plate, ensuring that the push plate moves only in the vertical direction without deflection. The through holes ensure smooth pressure release, thereby improving the stability and reliability of the pressure relief mechanism.

[0010] The present invention is further provided with a guide strip fixedly provided on the inner side of the pressure relief sleeve. The guide strip is provided in multiple sets and is slidably connected to the adjustment sleeve. The guide strip provides a stable sliding track for the adjustment sleeve, preventing the adjustment sleeve from rotating or shifting during the compression or release of the pressure spring, and ensuring the accuracy and smoothness of the pressure adjustment operation.

[0011] The present invention is further configured such that both the linkage block and the linkage hole are polygonal and slidably connected. The polygonal design of the linkage block and the linkage hole achieves good torque transmission, avoids the slippage problem that may occur with circular connections, and maintains the sliding function to adapt to axial displacement requirements, thereby improving the transmission efficiency and stability between the rotating sleeve and the screw.

[0012] The present invention is further configured such that the outer wall of the pressure relief sleeve is provided with a positioning mechanism, the positioning mechanism including a positioning block, a positioning groove, a pressure block, a tension spring, a slider, and a sliding groove. Multiple sets of positioning blocks slide on the outer wall of the pressure relief sleeve, multiple sets of positioning grooves are distributed on the outer wall of the connecting block, multiple sets of pressure blocks abut against the outer walls of multiple sets of positioning blocks, a tension spring is connected to the inner side of multiple sets of pressure blocks and fixedly connected to the outer wall of the pressure relief sleeve, a slider is fixed to the outer wall of multiple sets of pressure blocks, and multiple sets of sliding grooves are distributed on the outer wall of the pressure relief sleeve and slidably connected to multiple sets of sliders. This positioning mechanism, through the synergistic effect of elastic elements and multiple sets of positioning structures, enables the rotating sleeve to be accurately positioned at a preset gear during rotational adjustment. The operator can feel a noticeable gear jump, avoiding over- or under-adjustment, and significantly improving the accuracy and repeatability of the threshold setting.

[0013] The present invention is further configured such that the bottom end of the pressure relief pipe is connected to the internal pressure oil chamber of the pump body. The design of the pressure relief pipe being directly connected to the pressure oil chamber ensures direct monitoring and control of the pressure of the most critical part of the oil pump, avoids the lag and error that may be caused by indirect monitoring, makes the pressure relief response more timely and effective, and effectively prevents the impact of instantaneous pressure peaks on the pump body.

[0014] The present invention is further configured such that an oil inlet pipe is connected to the front side of the outer wall of the pump body, and an oil outlet pipe is connected to the rear side of the outer wall of the pump body. The design of arranging the oil inlet and outlet pipes on the front and rear sides of the pump body optimizes the oil flow path, reduces flow resistance, and makes the overall structure more compact, which is convenient for installation and maintenance, and improves the flow efficiency and working performance of the oil pump.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, this utility model provides a pressure relief component for an automotive oil pump, which has the following beneficial effects:

[0017] 1. The pressure relief mechanism, through the coordinated action of the pressure relief sleeve, pressure relief pipe, pressure spring, abutment ring, push plate, and connecting rod on the pump body, forms a rapid pressure release system. When the pressure in the oil pump's oil chamber exceeds the preset threshold, the pressure pushes the push plate to move, causing the sealing ring to disengage from the sealing groove, forming a pressure relief channel. This effectively prevents gear overload and increased power consumption caused by excessive internal pressure in the oil pump, while also reducing pipeline vibration and noise, and improving the working reliability and service life of the oil pump.

[0018] 2. The pressure regulating mechanism adopts a precise fit of screw, transmission sleeve, adjusting sleeve, rotating sleeve, connecting block, linkage hole, linkage block and sealing plate. By rotating the rotating sleeve, the linkage block is driven to rotate, realizing the threaded transmission between the screw and the transmission sleeve, thereby adjusting the compression force on the pressure spring. This allows the pressure relief valve value to be precisely adjusted according to different working conditions, overcoming the disadvantage of inconvenient adjustment of traditional pressure relief devices and improving the adaptability and precise control capability of the oil pump under different operating conditions.

[0019] 3. The positioning mechanism, through the ingenious combination of positioning block, positioning groove, pressure block, tension spring, slider and slide groove, realizes gear control during the rotation of the rotating sleeve. When the rotating sleeve is rotated, the arc-shaped design between the positioning block and the positioning groove allows the positioning block to be accurately positioned at the next gear position under the action of the pressure block and tension spring, forming clear adjustment feedback. This allows the operator to intuitively perceive the adjustment amount and accurately lock the required pressure relief valve value, greatly improving the accuracy and repeatability of the adjustment, and solving the problem of the difficulty in accurately adjusting the pressure relief valve value in the existing technology. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a pressure relief assembly for an automotive oil pump according to the present invention.

[0021] Figure 2 This is a schematic diagram of the pressure relief sleeve in this utility model;

[0022] Figure 3 This is a cross-sectional view of the pressure relief mechanism in this utility model.

[0023] Figure 4 This is a cross-sectional view of the connecting block in this utility model;

[0024] Figure 5 This is a cross-sectional view of the pressure relief sleeve in this utility model.

[0025] In the diagram: 1. Pump body; 2. Pressure relief sleeve; 3. Pressure relief pipe; 4. Compression spring; 5. Abutment ring; 6. Push plate; 7. Connecting rod; 8. Screw; 9. Transmission sleeve; 10. Adjusting sleeve; 11. Rotating sleeve; 12. Connecting block; 13. Linkage hole; 14. Linkage block; 15. Sealing plate; 16. Sealing ring; 17. Sealing groove; 18. Limiting sleeve; 19. Limiting block; 20. Guide strip; 21. Positioning block; 22. Positioning groove; 23. Pressure block; 24. Tension spring; 25. Slider; 26. Slide groove; 27. Oil inlet pipe; 28. Oil outlet pipe. Detailed Implementation

[0026] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0027] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0028] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0029] Please see Figures 1-5 A pressure relief assembly for an automotive oil pump includes a pump body 1. A pressure relief mechanism is provided on the pump body 1. The pressure relief mechanism includes a pressure relief sleeve 2, a pressure relief pipe 3, a pressure spring 4, a contact ring 5, a push plate 6, a connecting rod 7, and a pressure regulating mechanism. The pressure relief sleeve 2 is fixed to the top surface of the pump body 1. The pressure relief pipe 3 is fixed to the bottom surface of the pressure relief sleeve 2 and extends into the pump body 1. The pressure spring 4 is connected to the inner wall of the pressure relief sleeve 2. The contact ring 5 is fixed to the bottom end of the pressure spring 4. The push plate 6 abuts against the inner wall of the pressure relief sleeve 2. The connecting rod 7 is fixed to the top surface of the push plate 6. The pressure regulating mechanism includes a screw 8. The system comprises a transmission sleeve 9, an adjusting sleeve 10, a rotating sleeve 11, a connecting block 12, a linkage hole 13, a linkage block 14, and a sealing plate 15. The screw 8 rotates at the top of the connecting rod 7. The transmission sleeve 9 is threadedly connected to the outer wall of the screw 8. The adjusting sleeve 10 is fixed to the outer wall of the transmission sleeve 9. The rotating sleeve 11 rotates at the top of the pressure relief sleeve 2. The connecting block 12 is fixed to the bottom surface of the rotating sleeve 11. The linkage hole 13 is located inside the connecting block 12. The linkage block 14 is fixed at the top of the screw 8 and slides inside the linkage hole 13. The sealing plate 15 is fixed at the top of the linkage block 14.

[0030] A sealing ring 16 is installed on the bottom surface of the push plate 6, and a sealing groove 17 is opened on the inner wall of the pressure relief sleeve 2. The sealing ring 16 abuts against the sealing groove 17, and the sealing ring 16 and the sealing groove 17 form a sealing structure. Under normal working pressure, the sealing ring 16 abuts tightly against the sealing groove 17 to prevent oil leakage. When the pressure exceeds the set threshold, the push plate 6 moves upward to drive the sealing ring 16 to disengage from the sealing groove 17, forming a pressure relief channel.

[0031] The inner wall of the pressure relief sleeve 2 is fixedly provided with a limiting sleeve 18, and the limiting sleeve 18 is also fixedly provided with through holes. There are multiple sets of through holes. The top surface of the push plate 6 is fixedly provided with a limiting block 19. There are multiple sets of limiting blocks 19, and they are all slidably connected to the limiting sleeve 18. The sliding connection design of the limiting block 19 in the limiting sleeve 18 ensures that the push plate 6 can only move in the vertical direction and will not deflect. The multiple sets of through holes provide the flow path of oil after pressure relief, ensuring that the pressure relief process is smooth and unobstructed.

[0032] The inner side of the pressure relief sleeve 2 is fixedly provided with a guide bar 20. Multiple sets of guide bars 20 are provided and are slidably connected with the adjusting sleeve 10. The guide bar 20 provides a stable movement trajectory for the adjusting sleeve 10. When the adjusting sleeve 10 moves up and down under the pressure of the compression spring 4, the guide bar 20 ensures that it moves in a straight line along the axial direction, preventing rotation or lateral deviation and improving the adjustment accuracy.

[0033] Both the linkage block 14 and the linkage hole 13 are polygonal and slidably connected. The polygonal design of the linkage block 14 and the linkage hole 13 enables reliable torque transmission. When the rotating sleeve 11 rotates, the linkage hole 13 drives the linkage block 14 to rotate synchronously, and the linkage block 14 then drives the screw 8 to rotate. At the same time, the polygonal sliding connection allows the linkage block 14 to move freely in the axial direction to adapt to the displacement requirements during the pressure relief process.

[0034] The outer wall of the pressure relief sleeve 2 is provided with a positioning mechanism, which includes a positioning block 21, a positioning groove 22, a pressure block 23, a tension spring 24, a slider 25, and a slide groove 26. The positioning block 21 has multiple sets that slide on the outer wall of the pressure relief sleeve 2. The positioning groove 22 has multiple sets that are distributed on the outer wall of the connecting block 12. The pressure block 23 has multiple sets that abut against the outer walls of the multiple sets of positioning blocks 21. The tension spring 24 is connected to the inner side of the multiple sets of pressure blocks 23 and is fixedly connected to the outer wall of the pressure relief sleeve 2. The slider 25 is fixed to the outer wall of the multiple sets of pressure blocks 23. The slide groove 26 has multiple sets that are distributed on the outer wall of the pressure relief sleeve 2 and are slidably connected to the multiple sets of sliders 25. When the rotating sleeve 11 rotates, the positioning groove 22 on the connecting block 12 interacts with the positioning block 21. Under the elastic force of the tension spring 24, the pressure block 23 pushes the positioning block 21 into the positioning groove 22, forming a clear gear position. The sliding of the slider 25 in the slide groove 26 ensures that the movement trajectory of the pressure block 23 is controlled. The whole system realizes a precise gear position positioning function.

[0035] The bottom end of the pressure relief pipe 3 is connected to the pressure oil chamber inside the pump body 1. The pressure relief pipe 3 is directly connected to the pressure oil chamber, so that the pressure relief mechanism can directly monitor and respond to the pressure changes in the pressure oil chamber. When the pressure exceeds the set value, the oil transmits the pressure to the push plate 6 through the pressure relief pipe 3, triggering the pressure relief action.

[0036] An oil inlet pipe 27 is connected to the front side of the outer wall of the pump body 1, and an oil outlet pipe 28 is connected to the rear side of the outer wall of the pump body 1. The oil inlet pipe 27 and the oil outlet pipe 28 are located on the front and rear sides of the pump body 1, respectively, forming a direct and efficient oil flow path. The oil inlet pipe 27 introduces low-pressure oil into the pump body 1, and after being pressurized by gears, high-pressure oil is output through the oil outlet pipe 28. The front and rear distribution design reduces flow resistance and optimizes the spatial layout.

[0037] In this embodiment, when the pressure in the inner oil chamber of the pump body 1 is too high and reaches the preset threshold of the pressure spring 4, the pressure pushes the push plate 6, causing the sealing ring 16 to disengage from the sealing groove 17, thus creating a pressure relief channel between the push plate 6 and the pressure relief sleeve 2. At the same time, the push plate 6 pushes the connecting rod 7 and the screw 8 to move. The screw 8 drives the adjusting sleeve 10 to overcome the preset force of the pressure spring 4, causing the screw 8 to push the sealing plate 15 to separate from the top surface of the rotating sleeve 11, thereby allowing the pressure to be discharged from the pressure relief sleeve 2. When it is necessary to adjust the preset force of the pressure spring 4, the rotating sleeve 11 is rotated to drive the linkage block 14 to rotate through the linkage hole 13. The linkage block 14 drives the screw 8 to rotate. The screw 8 and the transmission sleeve 9 are threaded together, causing the transmission sleeve 9 to drive the adjusting sleeve 10 to squeeze the pressure spring 4, thereby increasing the preset force of the pressure spring 4. Conversely, when the pressure spring 4 extends, the preset force of the pressure spring 4 is reduced.

[0038] More specifically, rotating the rotating sleeve 11 simultaneously drives the connecting block 12 to rotate. Through the arc-shaped design of multiple sets of positioning grooves 22 and positioning blocks 21, the outer wall of the positioning groove 22 pushes the positioning block 21 to disengage from the positioning groove 22 and pushes the pressure block 23 to slide along the slide groove 26 via the slider 25. The pressure block 23 stretches the tension spring 24. When the positioning block 21 moves to the next set of positioning grooves 22, the tension spring 24 pulls the pressure block 23 to push the positioning block 21 to abut against the positioning groove 22, so that the rotating sleeve 11 forms a stop rotation, thereby positioning the rotation of the rotating sleeve 11.

[0039] In summary, during the use or operation of the overall equipment: when the pressure in the inner oil chamber of the pump body 1 is too high and reaches the preset threshold of the pressure spring 4, the pressure pushes the push plate 6, causing the sealing ring 16 to disengage from the sealing groove 17, thus creating a pressure relief channel between the push plate 6 and the pressure relief sleeve 2. At the same time, the push plate 6 pushes the connecting rod 7 and the screw 8 to move. The screw 8 drives the adjusting sleeve 10 to overcome the preset force of the pressure spring 4, causing the screw 8 to push the sealing plate 15 to separate from the top surface of the rotating sleeve 11, thereby allowing the pressure to be discharged from the pressure relief sleeve 2. When it is necessary to adjust the preset force of the pressure spring 4, the rotating sleeve 11 is rotated to drive the linkage block 14 to rotate through the linkage hole 13. The linkage block 14 drives the screw 8 to rotate. The screw 8 and the transmission sleeve 9 are threaded together, causing the transmission sleeve 9 to drive the adjusting sleeve 10 to squeeze the pressure spring 4, thereby increasing the preset force of the pressure spring 4. Conversely, when the pressure spring 4 extends, the preset force of the pressure spring 4 is reduced.

[0040] While rotating the rotating sleeve 11, the connecting block 12 is driven to rotate. Through the arc-shaped design of multiple sets of positioning grooves 22 and positioning blocks 21, the outer wall of the positioning groove 22 pushes the positioning block 21 to disengage from the positioning groove 22 and pushes the pressure block 23 to slide along the slide groove 26 through the slider 25. The pressure block 23 stretches the tension spring 24. When the positioning block 21 moves to the next set of positioning grooves 22, the tension spring 24 pulls the pressure block 23 to push the positioning block 21 to abut in the positioning groove 22, so that the rotating sleeve 11 forms a gear rotation and positions the rotation of the rotating sleeve 11.

[0041] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model 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 utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A pressure relief assembly for an automotive oil pump comprising a pump body (1), characterised in that: The pump body (1) is equipped with a pressure relief mechanism, which includes a pressure relief sleeve (2), a pressure relief pipe (3), a pressure spring (4), a contact ring (5), a push plate (6), a connecting rod (7), and a pressure regulating mechanism. The pressure relief sleeve (2) is fixed to the top surface of the pump body (1), the pressure relief pipe (3) is fixed to the bottom surface of the pressure relief sleeve (2) and extends into the pump body (1), the pressure spring (4) is connected to the inner wall of the pressure relief sleeve (2), the contact ring (5) is fixed to the bottom end of the pressure spring (4), the push plate (6) abuts against the inner wall of the pressure relief sleeve (2), and the connecting rod (7) is fixed to the top surface of the push plate (6). The pressure regulating mechanism includes a screw (8), a transmission sleeve (9), an adjusting sleeve (10), and a rotating... The rotating sleeve (11), connecting block (12), linkage hole (13), linkage block (14), and sealing plate (15) are arranged. The screw (8) rotates at the top of the connecting rod (7). The transmission sleeve (9) is threadedly connected to the outer wall of the screw (8). The adjusting sleeve (10) is fixed to the outer wall of the transmission sleeve (9). The rotating sleeve (11) rotates at the top of the pressure relief sleeve (2). The connecting block (12) is fixed to the bottom surface of the rotating sleeve (11). The linkage hole (13) is set in the connecting block (12). The linkage block (14) is fixed to the top of the screw (8) and slides in the linkage hole (13). The sealing plate (15) is fixed to the top of the linkage block (14). The bottom surface of the push plate (6) is equipped with a dense seal. A sealing ring (16) is provided, and a sealing groove (17) is provided on the inner wall of the pressure relief sleeve (2). The sealing ring (16) abuts against the sealing groove (17). A limiting sleeve (18) is fixedly provided on the inner wall of the pressure relief sleeve (2). A through hole is provided on the limiting sleeve (18). A limiting block (19) is fixedly provided on the top surface of the push plate (6). Multiple sets of the limiting blocks (19) are provided and are all slidably connected to the limiting sleeve (18). A guide strip (20) is fixedly provided on the inner side of the pressure relief sleeve (2). Multiple sets of the guide strip (20) are provided and are slidably connected to the adjusting sleeve (10). A positioning mechanism is provided on the outer wall of the pressure relief sleeve (2). The positioning mechanism includes a positioning device. Positioning blocks (21), positioning grooves (22), pressure blocks (23), tension springs (24), sliders (25) and sliding grooves (26). Positioning blocks (21) are provided in multiple sets and slide on the outer wall of the pressure relief sleeve (2). Positioning grooves (22) are provided in multiple sets and distributed on the outer wall of the connecting block (12). Pressure blocks (23) are provided in multiple sets and abut against the outer wall of multiple sets of positioning blocks (21). Tension springs (24) are connected to the inner side of multiple sets of pressure blocks (23) and are fixedly connected to the outer wall of the pressure relief sleeve (2). Sliders (25) are fixed on the outer wall of multiple sets of pressure blocks (23). Slider grooves (26) are provided in multiple sets and distributed on the outer wall of the pressure relief sleeve (2) and are slidably connected to multiple sets of sliders (25).

2. The pressure relief assembly for an automotive oil pump according to claim 1, characterized in that: Both the linkage block (14) and the linkage hole (13) are polygonal and slidably connected.

3. The pressure relief assembly for an automotive oil pump according to claim 2, characterized in that: The bottom end of the pressure relief pipe (3) is connected to the internal pressure oil chamber of the pump body (1).

4. The pressure relief assembly for an automotive oil pump according to claim 3, characterized in that: The pump body (1) has an oil inlet pipe (27) connected to the front side of its outer wall and an oil outlet pipe (28) connected to the rear side of its outer wall.

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