CN215410438U - Hydraulic steering device, system and sealing ring - Google Patents
Hydraulic steering device, system and sealing ring Download PDFInfo
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- CN215410438U CN215410438U CN202121607922.0U CN202121607922U CN215410438U CN 215410438 U CN215410438 U CN 215410438U CN 202121607922 U CN202121607922 U CN 202121607922U CN 215410438 U CN215410438 U CN 215410438U
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- seal ring
- protrusions
- hydraulic steering
- housing
- protrusion
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Abstract
The utility model provides a hydraulic steering device, a hydraulic steering system and a sealing ring, wherein the sealing ring is positioned at the joint of a valve cover channel and a shell channel of the hydraulic steering device, and comprises: a plurality of first protrusions forming a plurality of contact points with the valve cover; a plurality of second protrusions forming a plurality of contact points with the housing. This application is through making the junction sealing washer that is located the valve gap passageway of hydraulic pressure steering device and casing passageway include a plurality of first convex parts and a plurality of second convex parts to form a plurality of contact points with casing and valve gap respectively, from this, reduce the oil leak risk of hydraulic pressure steering device.
Description
Technical Field
The utility model relates to the technical field of steering of motor vehicles, in particular to a hydraulic steering device, a hydraulic steering system and a sealing ring.
Background
The seal rings used in current hydraulic steering devices have a circular cross-section. Such a sealing ring can only make a single point contact with the housing and the valve cover of the hydraulic steering device. In the operation of the hydraulic steering apparatus, high pressure exists in the valve cover passage, which easily causes high-pressure oil to leak to the outside. In addition, the oil pressure in the bonnet passage varies at different rates of change, and therefore the risk of oil leakage is greater.
Therefore, how to reduce the oil leakage risk of the hydraulic steering device is an urgent technical problem to be solved by the utility model.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention provides a hydraulic steering apparatus, a hydraulic steering system, and a seal ring, which can reduce the risk of oil leakage of the hydraulic steering apparatus.
According to an aspect of the present invention, there is provided a seal ring at a junction of a bonnet passage and a housing passage of a hydraulic steering apparatus, the seal ring comprising:
a plurality of first protrusions forming a plurality of contact points with the valve cover;
a plurality of second protrusions forming a plurality of contact points with the housing.
In some embodiments of the present invention, the,
the first protrusions of the sealing ring extend along the sealing ring to form annular protrusions; and/or.
The plurality of second protrusions of the seal ring extend along the seal ring to form an annular protrusion.
In some embodiments of the present invention, the,
the first protrusions and the second protrusions are at least located on one side, away from the pressure chamber of the hydraulic steering device, of the seal ring.
In some embodiments of the present invention, the area of the contact point formed by the first protrusion and the second protrusion facing the outside of the annular region of the seal ring is larger than the area of the contact point formed by the first protrusion and the second protrusion facing the inside of the annular region of the seal ring.
In some embodiments of the utility model, the first and second protrusions facing the inside of the annular region of the seal ring are arcuate protrusions; the first and second protrusions facing the outside of the annular region of the seal ring are angular protrusions.
In some embodiments of the utility model, the seal ring comprises:
a first concave portion formed between adjacent first and second convex portions facing an outer side of the annular region of the seal ring;
a second recessed portion formed between adjacent first and second protruding portions facing the inside of the annular region of the seal ring,
the opening area of the first recess is smaller than the opening area of the second recess.
In some embodiments of the utility model, at least the side of the sealing ring facing away from the pressure chamber of the hydraulic steering device has a K-shaped cross-section.
In some embodiments of the utility model, the seal ring has a K-shaped cross-section.
According to still another aspect of the present invention, there is also provided a hydraulic steering apparatus including:
a housing;
a control valve passing through the housing;
a hydraulic motor unit located in the accommodating space of the housing, the hydraulic motor unit including a pressure chamber;
a valve cover sleeved on the control valve and positioned between the shell and the control valve,
wherein, the casing is provided with the casing passageway, the valve gap is provided with the valve gap passageway, the valve gap passageway with the casing passageway UNICOM, in order with pressure chamber UNICOM, hydraulic pressure turns to the device and still includes: a seal ring as described above, located at the junction of the bonnet passage and the housing passage of the hydraulic steering apparatus.
According to still another aspect of the present invention, there is also provided a hydraulic steering system including: the hydraulic steering apparatus as described above.
Compared with the prior art, the utility model has the beneficial effects that:
according to the utility model, the sealing ring at the joint of the valve cover channel and the shell channel of the hydraulic steering device comprises the plurality of first convex parts and the plurality of second convex parts, so that a plurality of contact points are respectively formed with the shell and the valve cover, and therefore, the oil leakage risk of the hydraulic steering device is reduced.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the utility model and together with the description, serve to explain the principles of the utility model. It is obvious that the drawings in the following description are only some embodiments of the utility model, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
Fig. 1 is a schematic view of a hydraulic steering system according to an embodiment of the present invention.
Fig. 2 is a partial schematic view of a hydraulic steering apparatus according to an embodiment of the present invention.
Fig. 3 is a schematic view of a seal ring according to an embodiment of the present invention.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the disclosure. One skilled in the relevant art will recognize, however, that the subject matter of the present disclosure can be practiced without one or more of the specific details, or with other methods, materials, devices, etc. In other instances, well-known technical solutions have not been shown or described in detail to avoid obscuring aspects of the present disclosure. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed description will be omitted.
The terms "a," "an," "the," "said," and "at least one" are used to indicate the presence of one or more elements/components/parts/etc.; the terms "comprising," "having," and "providing" are intended to be inclusive and mean that there may be additional elements/components/etc. other than the listed elements/components/etc.
The hydraulic steering apparatus, system and seal ring provided by the present invention will be described with reference to fig. 1 to 3. Fig. 1 is a schematic view of a hydraulic steering system according to an embodiment of the present invention. Fig. 2 is a partial schematic view of a hydraulic steering apparatus according to an embodiment of the present invention. Fig. 3 is a schematic view of a seal ring according to an embodiment of the present invention.
The hydraulic steering system 12 includes a pump 14 that flows power steering fluid from a fluid reservoir 16 into a hydraulic motor unit 18 formed within a hydraulic steering apparatus 20. The hydraulic motor unit 18 drives a steering arm 22 connected to the vehicle steering linkage to turn the wheels. The hydraulic steering device 20 includes a control valve 10 to control the flow of fluid from the pump 14 to the hydraulic motor unit 18. A supply line 24 flows fluid from the pump 14 to the control valve 10, and a return line 26 flows fluid from the control valve 10 back to the fluid reservoir 16.
The hydraulic steering device 20 includes a housing 23, a control valve 10, a hydraulic motor unit 18, a valve cover 21, and a seal ring 27. The control valve 10 passes through the housing 23. The hydraulic motor unit 18 is located in the accommodating space of the housing 23, and the hydraulic motor unit 18 includes a hydraulic motor and a pressure chamber. The valve cover 21 is sleeved on the control valve 10 to provide support for the control valve 10. A valve cover 21 is located between the housing 23 and the control valve 10. The housing 10 is provided with a housing passage (not shown) and the valve cover 21 is provided with a valve cover passage 25. The valve cover passage 25 communicates with the housing passage to communicate with the pressure chambers, thereby enabling the flow of power steering fluid entering the hydraulic steering apparatus 20 through the passages.
The sealing ring 27 is located at the junction of the bonnet passage 25 and the housing passage of the hydraulic steering apparatus 20. The seal ring 27 may include a plurality of first protrusions 272A and 272B, and a plurality of second protrusions 271A and 271B. The plurality of first protrusions 272A and 272B form a plurality of contact points with the valve cover 21. The plurality of second protrusions 271A and 271B form a plurality of contact points with the housing 23. Thereby, more contact points and thus better sealing properties are provided compared to the prior art, to reduce the risk of oil leakage.
In some embodiments, the plurality of first protrusions 272A and 272B of the seal ring 271 extend along the seal ring 271 to form annular protrusions, and the plurality of second protrusions 271A and 271B of the seal ring 271 also extend along the seal ring 271 to form annular protrusions. Accordingly, the first convex portions 272A and 272B and the second convex portions 271A and 271B are aligned at the respective positions of the seal ring 271, and therefore, the production of the seal ring 271 can be facilitated.
In other embodiments, the first protrusions 272A and 272B and the second protrusions 271A and 271B are located at least on a side of the seal ring 271 away from the pressure chamber of the hydraulic steering apparatus (a direction toward the pressure chamber is an X direction in fig. 2). Specifically, in the operation of the hydraulic steering apparatus, high pressure is present in the bonnet passage 25, which tends to cause high pressure oil to leak to the outside as compared with the pressure chamber side, and since there is no pressure at the joint (201 in the drawing) between the bonnet 21 and the housing 23 on the left side in fig. 2, high pressure oil tends to leak particularly to the joint 201. Therefore, by increasing the contact point of the sealing ring 271 on the side away from the pressure chamber of the hydraulic steering device, the risk of oil leakage on the side of the joint 201 is reduced.
Further, in some embodiments of the present invention, the contact point area formed by the first protrusion 272B and the second protrusion 271B facing the outside of the annular region of the seal ring 271 is larger than the contact point area formed by the first protrusion 272A and the second protrusion 271A facing the inside of the annular region of the seal ring 271. Specifically, the seal ring 271 forms an annular region, and a direction toward the outside of the annular region of the seal ring 271 is opposite to a direction toward the annular region. In other words, the outer periphery of the seal 271 faces the outside of the annular region of the seal 271, and the inner periphery of the seal 271 faces the inside of the annular region of the seal 271. As explained in the foregoing embodiments, the seam 201 of the valve cover 21 and the housing 23 has a greater risk of oil leakage, and therefore, the area of the contact point between the first protrusion 272B and the second protrusion 271B near the seam 201 is increased to improve the sealing performance there. In some preferred examples of this embodiment, the first protrusion 272A and the second protrusion 271A facing the inside of the annular region of the seal ring 271 are arc-shaped protrusions; the first projection 272B and the second projection 271B facing the outside of the annular region of the seal ring 271 are angular projections. The top and bottom of the angular protrusion form a flat surface to increase the contact area with the valve cover 21 and the housing 23.
Further, in some embodiments of the present invention, the seal ring 271 includes a first recess 274 and a second recess 273. The first concave portion 274 is formed between the adjacent first convex portion 272B and second convex portion 271B facing the outside of the annular region of the seal ring 271. The second concave portion 273 is formed between the adjacent first convex portion 272A and second convex portion 271A facing the inside of the annular region of the seal ring 271. The first and second concave portions 274 and 273 of the seal ring 271 can change sealing performance according to different oil pressures because the seal ring 271 moves to a low pressure side and the first and second concave portions 274 and 273 increase contact areas after being deformed. This deformation increases the oil pressure carrying capacity and better prevents oil leakage. In some preferred examples of this embodiment, the open area of the first recess 274 is smaller than the open area of the second recess 273, thereby enabling the second recess 273, which is remote from the seam 201, to have a better load-bearing capacity.
In some specific implementations, at least a side of the sealing ring 271 away from the pressure chamber of the hydraulic steering apparatus 20 has a K-shaped cross section (e.g., the K-shaped cross section shown in fig. 3). In other embodiments, the sealing ring 271 has a K-shaped cross-section at each portion of its annular shape to facilitate the fabrication of the sealing ring 271.
In conclusion, compared with the prior art, the utility model has the beneficial effects that:
by making the sealing ring at the junction of the bonnet passage and the housing passage of the hydraulic steering device comprise a plurality of first protrusions and a plurality of second protrusions, thereby forming a plurality of contact points with the housing and the bonnet, respectively, thereby reducing the risk of oil leakage of the hydraulic steering device.
Although relative terms, such as "upper" and "lower," may be used in this specification to describe one element of an icon relative to another, these terms are used in this specification for convenience only, e.g., in accordance with the orientation of the examples described in the figures. It will be appreciated that if the device of the icon were turned upside down, the element described as "upper" would become the element "lower". Other relative terms, such as "high," "low," "top," "bottom," "left," "right," and the like are also intended to have similar meanings. When a structure is "on" another structure, it may mean that the structure is integrally formed with the other structure, or that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure via another structure.
In the description herein, references to the description of "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," etc., indicate that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is a more detailed description of the utility model in connection with specific preferred embodiments and it is not intended that the utility model be limited to these specific details. For those skilled in the art to which the utility model pertains, several simple deductions or substitutions can be made without departing from the spirit of the utility model, and all shall be considered as belonging to the protection scope of the utility model.
Claims (10)
1. A seal ring at the junction of a bonnet passage and a housing passage of a hydraulic steering apparatus, the seal ring comprising:
a plurality of first protrusions forming a plurality of contact points with the valve cover;
a plurality of second protrusions forming a plurality of contact points with the housing.
2. The seal ring of claim 1,
the first protrusions of the sealing ring extend along the sealing ring to form annular protrusions; and/or
The plurality of second protrusions of the seal ring extend along the seal ring to form an annular protrusion.
3. The seal ring of claim 1, wherein the first plurality of protrusions and the second plurality of protrusions are located on at least a side of the seal ring away from a pressure chamber of the hydraulic steering apparatus.
4. The seal ring according to claim 1, wherein the contact point area formed by the first protrusion and the second protrusion facing the outside of the annular region of the seal ring is larger than the contact point area formed by the first protrusion and the second protrusion facing the inside of the annular region of the seal ring.
5. The seal ring according to claim 4, wherein the first protrusion and the second protrusion facing the inside of the annular region of the seal ring are arcuate protrusions; the first and second protrusions facing the outside of the annular region of the seal ring are angular protrusions.
6. The seal ring as claimed in claim 4, wherein said seal ring comprises:
a first concave portion formed between adjacent first and second convex portions facing an outer side of the annular region of the seal ring;
a second recessed portion formed between adjacent first and second protruding portions facing the inside of the annular region of the seal ring,
the opening area of the first recess is smaller than the opening area of the second recess.
7. A seal ring as claimed in any one of claims 1 to 6, characterized in that at least the side of the seal ring facing away from the pressure chamber of the hydraulic steering device has a K-shaped cross-section.
8. A seal ring as claimed in any one of claims 1 to 6, characterized in that said seal ring has a K-shaped cross-section.
9. A hydraulic steering device, characterized by comprising:
a housing;
a control valve passing through the housing;
a hydraulic motor unit located in the accommodating space of the housing, the hydraulic motor unit including a pressure chamber;
a valve cover sleeved on the control valve and positioned between the shell and the control valve,
wherein, the casing is provided with the casing passageway, the valve gap is provided with the valve gap passageway, the valve gap passageway with the casing passageway UNICOM, in order with pressure chamber UNICOM, hydraulic pressure turns to the device and still includes: the seal ring according to any one of claims 1 to 8, located at the junction of the valve cover passage and the housing passage of the hydraulic steering device.
10. A hydraulic steering system, comprising:
a hydraulic steering arrangement according to claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121607922.0U CN215410438U (en) | 2021-07-15 | 2021-07-15 | Hydraulic steering device, system and sealing ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121607922.0U CN215410438U (en) | 2021-07-15 | 2021-07-15 | Hydraulic steering device, system and sealing ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215410438U true CN215410438U (en) | 2022-01-04 |
Family
ID=79649571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121607922.0U Active CN215410438U (en) | 2021-07-15 | 2021-07-15 | Hydraulic steering device, system and sealing ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215410438U (en) |
-
2021
- 2021-07-15 CN CN202121607922.0U patent/CN215410438U/en active Active
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