Steering oil tank turbulence filtering device and steering oil tank

Abstract

This invention discloses a steering fluid reservoir turbulence filtering device and a steering fluid reservoir. The steering fluid reservoir turbulence filtering device includes a cylindrical turbulence-prone body. The top of the turbulence-prone body has an upper annular flange, and the bottom has a lower annular flange. The outer diameters of both the upper and lower annular flanges are larger than the turbulence-prone body. The sidewall of the turbulence-prone body has several windows and a turbulence surface area. Within the turbulence surface area, the sidewall of the turbulence-prone body has multiple serrated protrusions. A first filter screen is installed at the bottom opening of the turbulence-prone body. By aligning the serrated protrusions with the return port of the steering fluid reservoir, the fluid flow collides and mixes with each other in the area between adjacent protrusions, generating significant damping. This allows the fluid to return to the steering fluid reservoir through the windows at a lower speed, improving the reliability of the steering fluid reservoir and ensuring stable operation of the steering system.

Description

Technical Field

[0001] This invention relates to the field of steering oil tank technology, specifically to a steering oil tank turbulence filtering device and a steering oil tank. Background Technology

[0002] The safety of the steering system is a key focus in automotive design. During the operation of the steering system, if the steering fluid returns directly into the reservoir, the high pressure may cause it to spray out of the reservoir's filler neck, resulting in problems such as fluid overflow and heavy steering. Therefore, a flow-around filter structure needs to be installed at the return port to filter and remove impurities from the return fluid while reducing the flow rate to ensure stable operation of the steering system.

[0003] To achieve the above objectives, Chinese invention patent CN111795017A discloses a steering oil tank. A flow-stabilizing filter device is installed in the lower tank body. The flow-stabilizing filter device includes a body and a filter screen. A flow-stabilizing hole is provided on the outer wall of the middle part of the body, and a second groove is provided on the lower inner wall of the body. The filter screen is assembled in the second groove and overlaps with a circumferential protrusion. The body includes a first annular segment, a second annular segment, and a third annular segment connected sequentially from top to bottom. The outer diameter of the second annular segment is smaller than the outer diameters of the first and third annular segments. Six flow-stabilizing holes are provided along the circumferential direction on the outer wall of the second annular segment. The second groove is provided on the inner wall of the third annular segment. The inlet of the oil inlet pipe is located between the first and third annular segments.

[0004] In the aforementioned power steering reservoir, since the side of the second annular section directly faces the inlet of the inlet pipe, the power steering fluid returning from the inlet is high-pressure fluid. This fluid directly impacts the side wall of the flow stabilization filter, then circulates along the side wall and enters the power steering reservoir through the side wall opening. Due to the smooth surface of the side wall and low fluid resistance, the fluid ultimately flows into the power steering reservoir at a relatively high rate, resulting in poor turbulence. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a steering oil tank turbulence filtering device and a steering oil tank, which can effectively reduce the return oil flow rate of the steering oil tank, improve the reliability of the steering oil tank, and ensure the stable operation of the steering system.

[0006] To address the aforementioned technical problems, this invention provides a steering oil tank turbulence filtering device, comprising a cylindrical turbulence-disrupting body. The top end of the turbulence-disrupting body is provided with an upper annular flange, and the bottom end is provided with a lower annular flange. The outer diameters of both the upper and lower annular flanges are larger than that of the turbulence-disrupting body. The sidewall of the turbulence-disrupting body is provided with a plurality of windows and a turbulence-disrupting surface area. Within the turbulence-disrupting surface area, the sidewall of the turbulence-disrupting body has a plurality of serrated protrusions. A first filter screen is provided on the bottom opening of the turbulence-disrupting body.

[0007] In the aforementioned steering oil tank turbulence filtering device, by adding a turbulence surface area on the side wall of the turbulence body, and using a sawtooth-shaped protrusion structure directly facing the return port of the steering oil tank, the return fluid has a relatively high flow velocity. After impacting the sawtooth-shaped protrusions, it either flows along the side of the protrusion or is reflected by the side of the protrusion. Then, it collides and mixes with each other in the area between two adjacent protrusions, generating a large damping on the return fluid flow. This allows the return fluid to flow back into the steering oil tank at a lower speed through the window, generating a smaller pressure in the steering oil tank, improving the reliability of the steering oil tank, and ensuring the stable operation of the steering system.

[0008] As an improvement to the steering oil tank turbulence filtering device of the present invention, a second filter screen is provided on each of the aforementioned windows. The second filter screen can not only perform initial filtration on the returning fluid flow, and together with the first filter screen, achieve two-stage filtration to ensure that the oil circuit is free of impurities; but also further generate damping to reduce the flow rate of the fluid flowing back into the steering oil tank.

[0009] Furthermore, a first annular groove is provided on the top surface of the lower annular flange. Preferably, the inner side of the first annular groove is flush with the outer side of the turbulence-disrupting body. The first annular groove holds the impurities filtered by the second filter, allowing for easy cleaning of the turbulence-disrupting filter device when removed from the steering oil tank.

[0010] As another improvement to the turbulence filtering device for the steering tank of the present invention, the protrusion is arranged along the axial direction of the turbulence body. This allows the sides of the serrated protrusion to also have a certain damping effect when the liquid flows to both sides.

[0011] Furthermore, the disturbance surface area is located between two adjacent window openings, and the protrusion extends from the top of the disturbance body to the bottom.

[0012] To solve the above-mentioned technical problems, the present invention provides a steering oil tank, including a cylindrical tank body, an annular step on the inner wall of the tank body, a steering oil tank turbulence filtering device as described above placed on the annular step, and an oil return hole on the tank body, the oil return hole facing the turbulence surface area.

[0013] In the aforementioned steering reservoir, the turbulence-filtering device is positioned so that its turbulence-returning surface is aligned with the reservoir's return port. This, along with the principle described above, significantly reduces the flow rate of the fluid ultimately entering the steering reservoir through the window, thereby improving the reservoir's stability.

[0014] Furthermore, the outer diameters of the upper and lower annular flanges are the same, and the width of the turbulence surface area is greater than the diameter of the return oil hole of the steering oil tank.

[0015] In summary, by adopting the aforementioned steering oil tank turbulence filter device and steering oil tank, the return oil flow rate of the steering oil tank can be effectively reduced, the reliability of the steering oil tank can be improved, and the stable operation of the steering system can be ensured. Attached Figure Description

[0016] In the attached diagram:

[0017] Figure 1 This is a three-dimensional structural diagram of the steering oil tank turbulence filtering device of the present invention.

[0018] Figure 2 This is a cross-sectional structural diagram of the steering oil tank turbulence filtering device of the present invention.

[0019] Figure 3 This is a structural diagram of the steering oil tank of the present invention.

[0020] In the figure, 1. Turbation body; 11. Upper annular flange; 12. Lower annular flange; 121. First annular groove; 122. Second annular groove; 123. Annular sealing ring; 13. Window hole; 14. Turbation surface area; 141. Protrusion; 2. First filter screen; 3. Second filter screen; 4. Tank body; 41. Annular step; 42. Oil return hole. Detailed Implementation

[0021] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings. It should be noted that these descriptions of the embodiments are for the purpose of helping to understand the present invention, but do not constitute a limitation thereof.

[0022] Example 1

[0023] Figure 1-2 This invention illustrates a turbulence filtering device for a steering oil tank. For example... Figure 1-2 As shown, the steering oil tank turbulence filtering device includes a cylindrical turbulence body 1. The top end of the turbulence body 1 is provided with an upper annular flange 11 and the bottom end is provided with a lower annular flange 12. The outer diameter of both the upper annular flange 11 and the lower annular flange 12 is larger than that of the turbulence body 1. The side wall of the turbulence body 1 is provided with a number of windows 13 and a turbulence surface area 14. In the turbulence surface area 14, the side wall of the turbulence body 1 has a number of serrated protrusions 141. The bottom opening of the turbulence body 1 is provided with a first filter screen 2.

[0024] A turbulence surface area 14 is added to the side wall of the turbulence body 1. In use, the serrated protrusions 141 are directly facing the return port of the steering oil tank. Due to the large flow velocity of the return fluid, after impacting the serrated protrusions 141, it either flows along the side of the protrusions 141 or is reflected by the side of the protrusions 141. Then, it collides and mixes with each other in the area between two adjacent protrusions 141, generating a large damping on the return fluid flow. This allows the fluid to return to the steering oil tank at a lower speed through the window 13, resulting in a smaller pressure change in the steering oil tank.

[0025] Optionally, each window 13 is provided with a second filter 3. The mesh size of the second filter 3 is larger than that of the first filter 2.

[0026] To facilitate the collection and processing of impurities filtered by the second filter screen 3, such as Figure 2 As shown, a first annular groove 121 is provided on the top surface of the lower annular flange 12. The inner side of the first annular groove 121 is flush with the outer side of the turbulence body 1.

[0027] Optional, such as Figure 1 As shown, the protrusion 141 is arranged along the axial direction of the turbulence-disrupting body 1. The turbulence-disrupting surface region 14 is located between two adjacent windows 13. The protrusion 141 extends from the top to the bottom of the turbulence-disrupting body 1, so that the sides of the serrated protrusion 141 also have a certain damping effect when the liquid flows to both sides. The turbulence-disrupting surface region 14 is located between two adjacent windows 13, providing a sufficient turbulence-disrupting area.

[0028] Optional, such as Figure 2 As shown, a second annular groove 122 is provided on the outer side of the upper annular flange 11, and an annular sealing ring 123 is provided in the second annular groove 122. The annular sealing ring 123 contacts and seals with the inner wall of the steering oil tank, thereby separating the power steering oil in the steering oil tank. The upper part is unfiltered by the first filter screen 2, and the lower part is filtered.

[0029] Optionally, the edge of the upper annular flange 11 extends away from the turbulence body 1, so that the cross-section of the upper annular flange 11 is an inverted L-shape. This makes the side height of the upper annular flange 11 greater, which facilitates the arrangement of the second annular groove 122 and the annular sealing ring 123.

[0030] Figure 3 The present invention illustrates a steering oil tank, comprising a cylindrical tank body 4, an annular step 41 on the inner wall of the tank body 4, a steering oil tank turbulence filtering device as described above placed on the annular step 41, and an oil return hole 42 on the tank body 4, the oil return hole 42 being directly opposite the turbulence surface area 14.

[0031] Optionally, the outer diameters of the upper annular flange 11 and the lower annular flange 12 are the same, and they are placed coaxially inside the tank body 4. The annular sealing ring 123 separates the oil in the tank body 4 from the oil that has been filtered by the first filter screen 2. The oil outlet is located at the bottom of the first filter screen 2.

[0032] Optionally, the width of the turbulence surface area 14 is larger than the diameter of the return oil hole 42 of the steering oil tank, providing sufficient turbulence area and improving damping.

[0033] Optionally, a snap-fit ​​structure is provided between the inner wall of the steering oil tank and the lower annular flange 12 to fix the two together.

[0034] In use, the annular sealing ring 123 is installed in the second annular groove 122; then the entire turbulence filter device is placed on the annular step 41 of the tank body 4 and fixed with clips, so that the oil return hole 42 faces the turbulence surface area 14, forming a return flow channel, i.e., a turbulence cavity, between the side wall of the turbulence body 1 and the steering oil tank. In this way, after the high-speed oil enters the turbulence cavity, it rushes towards the side of the protrusion 141, is subjected to a large damping effect, the flow velocity is reduced, and finally flows smoothly into the steering oil tank, which greatly improves the reliability and safety of the steering oil tank.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit its scope of protection. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that after reading the present invention, they can still make various changes, modifications or equivalent substitutions to the specific implementation of the invention, but these changes, modifications or equivalent substitutions are all within the scope of protection of the pending claims of the invention.

Claims

1. A turbulence filtering device for a steering oil tank, characterized in that, The device includes a cylindrical turbulence-disrupting body (1), with an upper annular flange (11) at the top and a lower annular flange (12) at the bottom. The outer diameters of the upper annular flange (11) and the lower annular flange (12) are both larger than that of the turbulence-disrupting body (1). The sidewall of the turbulence-disrupting body (1) is provided with a plurality of windows (13) and a turbulence-disrupting surface area (14). In the turbulence-disrupting surface area (14), the sidewall of the turbulence-disrupting body (1) has a plurality of serrated protrusions (141). A first filter screen (2) is provided on the bottom opening of the turbulence-disrupting body (1).

2. The steering oil tank turbulence filtering device according to claim 1, characterized in that, Each of the aforementioned window openings (13) is provided with a second filter screen (3).

3. The steering oil tank turbulence filtering device according to claim 2, characterized in that, The mesh size of the second filter (3) is larger than that of the first filter (2).

4. A steering oil tank turbulence filtering device according to claim 2, characterized in that, A first annular groove (121) is provided on the top surface of the lower annular flange (12).

5. A steering oil tank turbulence filtering device according to claim 4, characterized in that, The inner side of the first annular groove (121) is flush with the outer side of the turbulence body (1).

6. The steering oil tank turbulence filtering device according to claim 1, characterized in that, The protrusion (141) is arranged along the axial direction of the turbulence body (1).

7. A steering oil tank turbulence filtering device according to claim 6, characterized in that, The turbulence surface area (14) is located between two adjacent window openings (13).

8. A steering oil tank turbulence filtering device according to claim 1, characterized in that, A second annular groove (122) is provided on the outer side of the upper annular flange (11), and an annular sealing ring (123) is provided in the second annular groove (122).

9. A steering oil tank turbulence filtering device according to claim 8, characterized in that, The edge of the upper annular flange (11) extends away from the turbulence body (1), so that the cross-section of the upper annular flange (11) is an inverted L shape.

10. A steering oil tank, characterized in that, The device includes a cylindrical tank (4), the inner wall of which is provided with an annular step (41), and a steering oil tank turbulence filtering device as described in any one of claims 1-9 is placed on the annular step (41). The tank (4) is provided with an oil return hole (42), which is directly opposite the turbulence surface area (14).

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