Steering gear valve body with built-in oil way

Abstract

The utility model belongs to the technical field of automobile steering equipment, and particularly relates to a steering gear valve body with a built-in oil way. Comprising a valve body, an internal small oil duct and an annular oil groove are formed in the valve body, the internal small oil duct is communicated with the annular oil groove, and the internal small oil duct and the annular oil groove are both formed in a casting mode. In the embodiment of the utility model, the internal small oil duct is directly cast when the valve body is cast, so that the problem that the internal small oil duct is difficult to process is avoided, and the condition that the steering gear produces abnormal sound during steering when the angle is too large or the aperture is too small is improved. And secondly, the internal small oil duct is directly cast and formed without processing, so that the production cost is reduced. In addition, by casting the annular oil groove, the oil storage area of the valve body can be increased, and therefore the oil storage amount of the valve body is increased.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile steering equipment, and particularly relates to a steering gear valve body with a built-in oil circuit. Background Art

[0002] The steering gear valve body is the cavity component that controls the internal oil circuit in the automobile power steering gear. The steering gear valve body is usually designed with an annular oil groove, a sealing groove, an oil inlet, an oil return port and a small internal oil channel.

[0003] However, due to the complex internal structure, the internal small oil passages are generally designed as large-angle inclined holes and the hole diameter cannot be too large, so the internal small oil passages are difficult to process. In addition, if the internal small oil passage angle is too large or the hole diameter is too small, the steering gear will produce abnormal noise. Therefore, it is necessary to design a steering gear valve body with built-in oil circuit to solve the above problems. Summary of the invention

[0004] In view of the above problems, the utility model provides a valve body of a steering gear with a built-in oil circuit to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a built-in oil circuit steering valve body, including a valve body, in which an internal small oil channel and an annular oil groove are opened, the internal small oil channel is connected to the annular oil groove, and the internal small oil channel and the annular oil groove are both cast.

[0006] Furthermore, the built-in oil circuit steering valve body also includes an adjusting piston and a spring. An assembly groove is also opened inside the valve body, and the opening of the assembly groove is connected to the internal small oil channel. The spring and the adjusting piston are arranged in the assembly groove in sequence, one end of the spring is connected to the adjusting piston, and the other end of the spring is connected to the bottom surface of the assembly groove. The adjusting piston is slidably connected to the assembly groove, and the end of the adjusting piston is used to extend into the internal small oil channel to control the flow of the internal small oil channel.

[0007] Furthermore, the built-in oil circuit steering gear valve body also includes an adjusting bolt, which is threadedly connected to the valve body, and the end of the adjusting bolt is used to extend into the assembly groove and connect with the adjusting piston.

[0008] Furthermore, a clamping groove is provided on the outer side wall of the adjusting piston, and the end of the adjusting bolt is used to be inserted into the clamping groove.

[0009] Furthermore, a plurality of the clamping grooves are provided, and the plurality of the clamping grooves are distributed in sequence along the axial direction of the regulating piston.

[0010] Furthermore, the built-in oil circuit steering valve body also includes a slider, which is connected to the outer wall of the regulating piston. A slide groove is also provided in the valve body, and the extension direction of the slide groove is parallel to the extension direction of the assembly groove. The slider is slidably connected to the slide groove.

[0011] Technical effects and advantages of the utility model:

[0012] By directly casting the internal small oil channel when casting the valve body, the problem of difficult processing of the internal small oil channel is avoided, and the situation in which the steering gear will produce abnormal noise when the angle is too large or the aperture is too small is improved.

[0013] The internal small oil channel is directly cast and does not require processing, which reduces production costs.

[0014] By casting the annular oil groove, the oil storage area of ​​the valve body can be increased, thereby increasing the oil storage capacity of the valve body.

[0015] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained by the structures indicated in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It shows a schematic structural diagram of a built-in oil circuit steering valve body of an embodiment of the utility model;

[0018] Figure 2 The schematic diagram of the structure of the built-in oil circuit steering device valve body of another embodiment of the utility model is shown.

[0019] Figure numerals: 1. valve body; 11. internal small oil channel; 12. annular oil groove; 13. slide groove; 14. assembly groove; 2. adjusting piston; 21. snap-on groove; 3. spring; 4. adjusting bolt; 5. slider. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] like Figure 1 and Figure 2 As shown, a built-in oil circuit steering valve body of an embodiment of the utility model includes a valve body 1, in which an internal small oil channel 11 and an annular oil groove 12 are opened, and the internal small oil channel 11 is connected to the annular oil groove 12, and the internal small oil channel 11 and the annular oil groove 12 are both cast.

[0022] In this embodiment, the internal small oil passage 11 is directly cast when casting the valve body 1, thereby avoiding the problem of difficult processing of the internal small oil passage 11, and improving the situation that the steering gear will produce abnormal noise when the angle is too large or the aperture is too small. Secondly, the internal small oil passage 11 is directly cast and does not require processing, which reduces the production cost. In addition, by casting the annular oil groove 12, the oil storage area of ​​the valve body 1 can be increased, thereby increasing the oil storage capacity of the valve body 1.

[0023] Alternatively, if Figure 2 As shown, the built-in oil circuit steering valve body 1 also includes an adjusting piston 2 and a spring 3. An assembly groove 14 is also opened inside the valve body 1. The opening of the assembly groove 14 is communicated with the internal small oil channel 11. The spring 3 and the adjusting piston 2 are arranged in the assembly groove 14 in sequence. One end of the spring 3 is connected to the adjusting piston 2, and the other end of the spring 3 is connected to the bottom surface of the assembly groove 14. The adjusting piston 2 is slidably connected to the assembly groove 14, and the end of the adjusting piston 2 is used to extend into the internal small oil channel 11 to control the flow of the internal small oil channel 11.

[0024] Specifically, the extending direction of the assembly groove 14 is parallel to the axial direction of the valve body 1 .

[0025] In this embodiment, the internal small oil passage 11 is directly cast, which may cause the problem of too large an aperture of the internal small oil passage 11. If the aperture of the internal small oil passage 11 is too large, it is easy to cause too large a flow rate of hydraulic oil, which will lead to poor control of the hydraulic oil and make it difficult to ensure the stability of the steering gear.

[0026] By setting the adjusting piston 2 and the spring 3, the elastic force of the spring 3 is used to push the adjusting piston 2 to move in the assembly groove 14, which can drive the end of the adjusting piston 2 to extend into the internal small oil channel 11. By using the adjusting piston 2 to block a part of the aperture of the internal small oil channel 11, the flow of the internal small oil channel 11 can be reduced. Therefore, when the aperture of the internal small oil channel 11 directly cast is too large, the elastic force generated by the spring 3 pushes the end of the adjusting piston 2 to be inserted into the internal small oil channel 11, which can achieve the adjustment of the aperture size of the internal small oil channel 11, thereby improving the control accuracy of the hydraulic oil and ensuring the stability of the steering gear.

[0027] Alternatively, if Figure 2 As shown, the built-in oil circuit steering valve body 1 also includes an adjusting bolt 4, which is threadedly connected to the valve body 1, and the end of the adjusting bolt 4 is used to extend into the assembly groove 14 and connect with the adjusting piston 2.

[0028] In this embodiment, the spring 3 generates elastic force to push the regulating piston 2 into the internal small oil channel 11, but the hydraulic oil entering the internal small oil channel 11 will generate a force on the regulating piston 2, which can easily push the end of the regulating piston 2 back into the assembly groove 14.

[0029] By setting the adjusting bolt 4 and connecting it to the adjusting piston 2 through the assembly groove 14, the adjusting piston 2 can be positioned to prevent the hydraulic oil from pushing the adjusting piston 2 to move, thereby ensuring the effect of the adjusting piston 2 controlling the flow of the internal small oil channel 11.

[0030] Secondly, the adjusting bolt 4 is threadedly connected to the valve body 1. By loosening the adjusting bolt 4, the elastic force generated by the spring 3 can push the adjusting piston 2 to move toward the side close to the internal small oil channel 11. By tightening the adjusting bolt 4, the adjusting piston 2 can be fixed relative to the assembly groove 14, so that the distance by which the end of the adjusting piston 2 extends into the internal small oil channel 11 can be adjusted. Specifically, the smaller the extending distance, the larger the flow rate of the internal small oil channel 11, and the larger the extending distance, the smaller the flow rate of the internal small oil channel 11, which facilitates the flow control function of the adjusting piston 2 on the internal small oil channel 11.

[0031] Alternatively, if Figure 2 As shown, a clamping groove 21 is provided on the outer side wall of the regulating piston 2 , and the end of the regulating bolt 4 is used to be inserted into the clamping groove 21 .

[0032] In this embodiment, by opening a clamping groove 21 on the outer wall of the adjusting piston 2, when tightening the adjusting bolt 4, the end of the adjusting bolt 4 can be inserted into the clamping groove 21, which facilitates the connection between the adjusting bolt 4 and the adjusting piston 2.

[0033] Optionally, a plurality of the clamping grooves 21 are provided, and the plurality of the clamping grooves 21 are distributed in sequence along the axial direction of the regulating piston 2 .

[0034] Specifically, the axial direction of the regulating piston 2 is parallel to the extending direction of the assembly groove 14 .

[0035] In this embodiment, by providing a plurality of snap-fit ​​grooves 21 and distributing the plurality of snap-fit ​​grooves 21 in sequence along the axial direction of the regulating piston 2, the regulating piston 2 can be controlled to be fixed at different positions relative to the assembly groove 14 by tightening the regulating bolt 4 and inserting the end of the regulating bolt 4 into different snap-fit ​​grooves 21, thereby controlling the distance that the end of the regulating piston 2 extends into the internal small oil channel 11, thereby ensuring the flow control effect of the regulating piston 2 on the internal small oil channel 11.

[0036] Alternatively, if Figure 2 As shown, the built-in oil circuit steering valve body 1 also includes a slider 5, which is connected to the outer wall of the regulating piston 2. A slide groove 13 is also provided in the valve body 1, and the extension direction of the slide groove 13 is parallel to the extension direction of the assembly groove 14. The slider 5 is slidably connected to the slide groove 13.

[0037] Specifically, the slider 5 is configured as a long strip structure.

[0038] In this embodiment, by providing a slider 5 and opening a slide groove 13 in the valve body 1, the slider 5 is slidably connected to the slide groove 13, so that the movement direction of the regulating piston 2 in the assembly groove 14 can be limited, thereby preventing the regulating piston 2 from being offset during the movement in the assembly groove 14, thereby avoiding the regulating piston 2 from being stuck during the movement, and ensuring the flow control effect of the regulating piston 2 on the internal small oil channel 11.

[0039] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A valve body for a steering gear with a built-in oil circuit, characterized in that: The valve body (1) comprises a valve body, wherein an internal small oil passage (11) and an annular oil groove (12) are provided in the valve body (1), the internal small oil passage (11) is communicated with the annular oil groove (12), and the internal small oil passage (11) and the annular oil groove (12) are both cast.

2. The built-in oil circuit steering valve body according to claim 1, characterized in that: The valve body (1) further comprises an adjusting piston (2) and a spring (3). An assembly groove (14) is provided inside the valve body (1). The opening of the assembly groove (14) is communicated with the internal small oil passage (11). The spring (3) and the adjusting piston (2) are arranged in sequence in the assembly groove (14). One end of the spring (3) is connected to the adjusting piston (2), and the other end of the spring (3) is connected to the bottom surface of the assembly groove (14). The adjusting piston (2) is slidably connected to the assembly groove (14). The end of the adjusting piston (2) is used to extend into the internal small oil passage (11) to control the flow of the internal small oil passage (11).

3. The built-in oil circuit steering valve body according to claim 2, characterized in that: It also comprises an adjusting bolt (4), wherein the adjusting bolt (4) is threadedly connected to the valve body (1), and the end of the adjusting bolt (4) is used to extend into the assembly groove (14) to be connected to the adjusting piston (2).

4. The built-in oil circuit steering valve body according to claim 3, characterized in that: A clamping groove (21) is provided on the outer side wall of the regulating piston (2), and the end of the regulating bolt (4) is used to be inserted into the clamping groove (21).

5. The built-in oil circuit steering valve body according to claim 4, characterized in that: A plurality of the clamping grooves (21) are provided, and the plurality of the clamping grooves (21) are distributed in sequence along the axial direction of the regulating piston (2).

6. The built-in oil circuit steering valve body according to any one of claims 2 to 5, characterized in that: The valve body (1) further comprises a sliding block (5), wherein the sliding block (5) is connected to the outer side wall of the regulating piston (2); a sliding groove (13) is also provided in the valve body (1); the extension direction of the sliding groove (13) is parallel to the extension direction of the assembly groove (14); and the sliding block (5) is slidably connected to the sliding groove (13).

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