Failure control structure and damping control electromagnetic valve

Abstract

The utility model relates to the technical field of automobile parts, in particular to a failure control structure and a damping control electromagnetic valve. The failure control structure comprises a control piece, a sealing piece and a driving piece, the control piece is provided with a main oil hole and an auxiliary oil hole which are communicated; the sealing pieces and the control pieces are arranged at intervals, in the axial view angle of the main oil hole, the main oil hole is located in the projection area of the sealing pieces, and the auxiliary oil hole is located outside the projection area of the sealing pieces or connected with the projection area of the sealing pieces. The driving piece is configured to drive the sealing piece to be close to or away from the control piece so that the sealing piece can block the main oil hole or unblock the main oil hole through the sealing piece. The hydraulic control device is relatively low in manufacturing cost, and the control piece can be replaced relatively conveniently so as to achieve adjustment of a hydraulic characteristic curve.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of automobile parts, in particular to a failure control structure and a damping control electromagnetic valve. BACKGROUND

[0002] The electromagnetic valve is an automatic basic element controlled by electromagnetism, which realizes the purpose of opening and closing and regulating fluid flow through the magnetic force generated by the electromagnet to push the movement of the valve core. When the electromagnetic coil is powered, a magnetic field is generated to attract the iron core to move, thereby driving the valve rod to act on the valve seat to realize opening or closing the valve.

[0003] A damping control electromagnetic valve with failure protection is disclosed in the Chinese utility model patent with the publication number CN218377929U. By designing the structure of the inner valve core in the damping control electromagnetic valve, it is ensured that the pressure inside the cavity can still be maintained within a safe range when the electromagnetic driving mechanism fails. However, in this patent, the new assembly size of the pilot valve is difficult to control, and an oil passage needs to be opened on the pilot valve core. The precision of this oil passage is relatively high, so the overall manufacturing cost of the electromagnetic valve is relatively high. At the same time, the impact of high-pressure oil on the pilot valve core can also cause unstable movement of the pilot valve core, leading to unstable sealing of the pilot valve core, and even causing jamming. UTILITY MODEL CONTENT

[0004] The application aims to provide a failure control structure and a damping control electromagnetic valve, which uses a structure that is easier to manufacture and assemble to replace the pilot valve core, thereby solving the problems of high manufacturing cost caused by the use of the pilot valve core and unstable movement of the pilot valve core in a high-pressure environment.

[0005] The application is achieved by the following technical solutions:

[0006] In a first aspect, the application provides a failure control structure for a damping control electromagnetic valve, comprising:

[0007] A control member has a through main oil hole and a secondary oil hole;

[0008] A sealing member is arranged in space with the control member. In the axial view of the main oil hole, the main oil hole is located in the projection area of the sealing member, and the secondary oil hole is located outside the projection area of the sealing member or the secondary oil hole is connected with the projection area of the sealing member.

[0009] A driving member is configured to drive the sealing member to approach or move away from the control member to form a blockage of the main oil hole by the sealing member or to remove the blockage of the main oil hole by the sealing member.

[0010] In some optional embodiments, the driving member and the sealing member form a contact transmission structure.

[0011] In some optional embodiments, the driving member is connected with the sealing member to synchronize the sealing member with the driving member.

[0012] In some optional embodiments, the number of the auxiliary oil holes is configured to be multiple.

[0013] In some optional embodiments, the auxiliary oil holes are arranged around the main oil hole.

[0014] In some optional embodiments, the auxiliary oil holes are evenly distributed around the circumference of the main oil hole.

[0015] In some optional embodiments, the control member is provided with an adjusting opening penetrating the control member, and at least one of the auxiliary oil holes is in communication with the main oil hole through the adjusting opening.

[0016] In some optional embodiments, the auxiliary oil holes are formed by outward radial extension of the aperture from the wall of the main oil hole.

[0017] In a second aspect, the application provides a damping control electromagnetic valve, comprising a main valve part, a pilot part and a driving part;

[0018] The pilot part comprises:

[0019] A support block is fixed opposite to the driving part, and the support block has an oil passage in communication with the outside of the damping control electromagnetic valve.

[0020] Any one of the failure control structures as described in the first aspect, wherein the control member is connected with the support block, the oil passage is in communication with the valve sleeve of the main valve part through the main oil hole or the auxiliary oil hole, and the driving member is connected with the driving part to drive the sealing member to act by the power provided by the driving part.

[0021] In some optional embodiments, the sealing member is located in the valve sleeve.

[0022] In some optional embodiments, the sealing member is a valve core structure.

[0023] Compared with the prior art, the application has the following advantages and beneficial effects:

[0024] The failure control structure and the damping control electromagnetic valve adopt a simpler structure to realize switching of the oil circuit, that is, when the sealing element unblocks the main oil hole, the oil flows in the main oil hole and the auxiliary oil hole, and when the sealing element blocks the main oil hole, the oil flows in the auxiliary oil hole; compared with the existing damping control electromagnetic valve control mode, the application avoids the use of a pilot valve core and other spool parts, and instead mainly uses a control element and a sealing element to realize control of the oil circuit, the cost is controlled, the space occupation is relatively small, and the failure risk caused by the jamming of the cooperation gap is controlled; at the same time, in the application, the control element with different sizes of auxiliary oil holes can be replaced to realize adjustment of the power-off hydraulic characteristics, the control element has a relatively simple opening process, is convenient to assemble, is easy to replace compared with the spool part, has lower implementation cost and is more convenient to implement. BRIEF DESCRIPTION OF DRAWINGS

[0025] The drawings described herein are used to provide further understanding of the embodiments of the application, constitute a part of the application, and do not constitute a limitation on the embodiments of the application. In the drawings:

[0026] Figure 1 The damping control electromagnetic valve with a failure control mode provided for the embodiments of the application is shown in the figure;

[0027] Figure 2 The pilot part structure diagram provided for the embodiments of the application is shown in the figure;

[0028] Figure 3 The pilot part state structure diagram of the damping control electromagnetic valve with a failure control mode provided for the embodiments of the application is shown in the figure when power-off;

[0029] Figure 4 The pilot part structure diagram provided for the embodiments of the application is shown in the figure when the sealing end face is designed in the valve sleeve;

[0030] Figure 5 The control element structure diagram provided for the embodiments of the application is shown in the figure;

[0031] Figure 6 The control element structure diagram provided for the embodiments of the application is shown in the figure;

[0032] Figure 7 The pilot part structure diagram provided for the embodiments of the application is shown in the figure when the driving element is replaced by a pilot valve core.

[0033] The marks in the drawings and the corresponding names of parts:

[0034] 1-reset elastic member, 2-front yoke cover, 3-driving member, 4-seal, 5-clasp, 6-supporting block, 7-control member, 701-main oil hole, 702-secondary oil hole, 703-adjusting opening, 8-valve cover, 801-sealing end face, 10-first pressure relief channel, 11-second pressure relief channel, 12-main valve part. DETAILED DESCRIPTION

[0035] In order to make the objects, technical solutions and advantages of the present application clearer, further detailed description will be made to the present application in combination with embodiments and drawings, the schematic embodiments of the present application and the description thereof are only used to explain the present application, but not limit the present application.

[0036] Reference can be made to Figure 2 , Figure 5 and Figure 6 , in the first aspect, the embodiments of the present application provide a failure control structure for damping control solenoid valve, which comprises a control member 7, a seal 4 and a driving member 3; the control member 7 has a through main oil hole 701 and a secondary oil hole 702; the seal 4 is arranged in space with the control member 7, in the axial view of the main oil hole 701, the main oil hole 701 is located in the projection area of the seal 4, and the secondary oil hole 702 is located outside the projection area of the seal 4 or the secondary oil hole 702 is connected with the projection area of the seal 4; the driving member 3 is configured to drive the seal 4 to approach or move away from the control member 7 to make the seal 4 form a seal or remove the seal of the main oil hole 701.

[0037] In the embodiments of the present application, a first matching plane can be machined on the control member 7, the main oil hole 701 is located in the first matching plane, and a second matching plane can be machined on the seal 4, when the seal 4 is driven by the driving member 3 to approach the control member 7, the first matching plane and the second matching plane can be mutually attached to realize effective sealing of the main oil hole 701; considering the convenience of manufacture, the control member 7 and the seal 4 can be designed as sheet structure, for example, the control member 7 and the seal 4 can be designed as disc structure.

[0038] In the embodiments of the present application, the main oil hole 701 is usually designed as circular hole to facilitate the flow of oil, in other embodiments, the main oil hole 701 can also be designed as polygonal hole, oval hole or other special-shaped hole; the shape of the secondary oil hole 702 can not be limited, the secondary oil hole 702 can usually be designed as circular hole or square hole structure, wherein the flow area of the secondary oil hole 702 is usually smaller than the cross-sectional flow area of the main oil hole 701.

[0039] In the embodiments of the present application, the driving member 3 and the sealing member 4 can be in contact transmission mode or non-contact transmission mode, for example, the driving member 3 can be directly connected with the sealing member 4, the driving member 3 can be connected with the sealing member 4 through an intermediate transmission structure, and the sealing member 4 can also be driven to move by magnetic force; in order to control the manufacturing cost and simplify the structure, the driving member 3 is usually in contact transmission structure with the sealing member 4, wherein the contact transmission structure includes continuous contact between the driving member 3 and the sealing member 4, for example, the driving member 3 is directly connected with the sealing member 4, and also includes intermittent contact, for example, the driving member 3 is in contact with the sealing member 4 and drives the sealing member 4 to move after a certain stroke.

[0040] In order to ensure the stability and controllability of the movement of the sealing member 4, preferably, the driving member 3 is directly connected with the sealing member 4, so that the sealing member 4 can move synchronously with the driving member 3, for example, the driving member 3 can be designed as a shaft body structure, and the sealing member 4 can be connected at the end of the driving member 3; if the sealing member 4 is a disc structure, a mounting circular hole can be coaxially formed on the sealing member 4, and the sealing member 4 is sleeved on the driving member 3 through the mounting circular hole, wherein a shaft shoulder for positioning is formed on the driving member 3, and a snap ring 5 is arranged to realize precise positioning of the sealing member 4.

[0041] In some optional embodiments, the plurality of auxiliary oil holes 702 can be arranged in parallel. Figures 5-6 The number of the auxiliary oil holes 702 is configured to be multiple.

[0042] In the embodiments of the present application, the plurality of auxiliary oil holes 702 form parallel oil paths, which can provide a more stable residual pressure release channel when the main oil hole 701 is blocked, avoiding sudden changes in system pressure caused by single-hole blockage; the multi-hole structure can also effectively disperse the impact force of the oil, reduce the local flow rate, and reduce the occurrence of cavitation; by adjusting the aperture combination of each auxiliary oil hole 702, more precise hydraulic characteristic curve adjustment can be realized to meet the pressure decay requirements under different working conditions; while ensuring the basic flow capacity, the reliability and adjustment flexibility of the system can be significantly improved.

[0043] In some optional embodiments, the auxiliary oil holes 702 are arranged around the main oil hole 701.

[0044] In the embodiments of the present application, by adjusting the angle position and aperture size of each auxiliary oil hole 702, the flow path and pressure distribution of the oil can be accurately controlled, so as to realize directional adjustment of the hydraulic damping characteristics.

[0045] In some optional embodiments, the auxiliary oil holes 702 are uniformly distributed around the circumference of the main oil hole 701.

[0046] In the embodiment, the annularly-distributed auxiliary oil hole 702 forms a uniform pressure field in the circumferential direction, effectively eliminates the hydraulic unbalance caused by one-side flow, and improves the motion stability of the valve core of the main valve part 12 of the damping control valve. Meanwhile, the radially-symmetrical structure of the multiple auxiliary oil holes 702 balances the impact force of the oil on the sealing member 4, prevents local wear, and prolongs the service life of the sealing member 4. In addition, the circumferentially-distributed auxiliary oil hole 702 can achieve rapid pressure equalization when the main oil hole 701 is blocked, ensures that the sealing member 4 can obtain consistent back pressure support in any orientation, and significantly improves the sealing reliability.

[0047] In some optional embodiments, as shown in FIG. 7, the control member 7 is provided with an adjusting opening 703 that penetrates the control member 7, and at least one auxiliary oil hole 702 is in communication with the main oil hole 701 through the adjusting opening 703. Figure 6 In actual implementation, the number of auxiliary oil holes 702 can be designed as one, which is in communication with the main oil hole 701. The number of auxiliary oil holes 702 can also be designed as multiple, which are annularly distributed or not annularly distributed around the main oil hole 701. At least one auxiliary oil hole 702 is in communication with the main oil hole 701 through the adjusting opening 703, or each auxiliary oil hole 702 is in communication with the main oil hole 701. The cross-sectional shape of the adjusting opening 703 is not limited, which can be rectangular, circular, oval, trapezoidal, saddle-shaped, etc. Preferably, the adjusting opening 703 is designed as a rectangle, and the width of the rectangle is less than the diameter of the auxiliary oil hole 702.

[0048] In some optional embodiments, the auxiliary oil hole 702 is configured as an outward radial extension gap from the wall of the main oil hole 701, that is, the adjusting opening 703 in the above is directly used as the auxiliary oil hole 702. At this time, the cross-sectional shape of the auxiliary oil hole 702 is also not limited, which can be rectangular, circular, oval, trapezoidal, saddle-shaped, etc. Preferably, the auxiliary oil hole 702 is designed as a rectangle, and the width of the rectangle is less than the diameter of the main oil hole 701. Meanwhile, the extension direction of the auxiliary oil hole 702 can be a curve, a broken line or a straight line, that is, the radial extension direction in the above refers to the direction of the gap, and does not refer to the overall extension direction of the auxiliary oil hole 702.

[0049] For reference, please refer to Figures 2-4 In a second aspect, the embodiment provides a damping control solenoid valve, which comprises a main valve part 12, a pilot part and a driving part. The pilot part comprises a support block 6 and any failure control structure in the first aspect. The support block 6 is fixed opposite to the driving part, and has an oil passage in communication with the outside of the damping control solenoid valve. The control member 7 is connected with the support block 6, the oil passage is in communication with the valve sleeve 8 of the main valve part 12 through the main oil hole 701 or the auxiliary oil hole 702, and the driving member 3 is connected with the driving part to drive the sealing member 4 to act by the power provided by the driving part.

[0050] In the embodiments of the present application, the driving part is usually an electromagnetic driving assembly, which does not provide power for the driving member 3 in the power-off state, and therefore the elastic reset member 1 can be arranged between the driving member 3 and the driving part to enable the driving member 3 to act automatically when the driving part is powered off. When the driving member 3 is a shaft body, the elastic reset member 1 can be configured as a coil spring to provide stable axial elastic force to the driving member 3.

[0051] As shown in Figure 1 , P1 is a high-pressure area, and P2 is a low-pressure area. The oil enters the electromagnetic valve from the high-pressure area P1, flows through the electromagnetic valve via the main oil path Q1 and the control oil path Q2, and enters the external low-pressure area P2. The driving part C outputs electromagnetic force Fm via the driving member 3, which is used for flow and pressure adjustment of the pilot part B, and further controls the main valve part 12, i.e. Figure 1 , opening degree adjustment of the A zone; in the power-on state of the electromagnetic valve, the driving member 3 is driven by the driving part to act against the elastic force of the reset elastic member 1, and the sealing member 4 acts together with the driving member 3 to move away from the main oil hole 701, thereby removing the blockage of the main oil hole 701 by the sealing member 4. The main oil hole 701 serves as a first pressure relief passage 10. As the sealing member 4 gradually moves away from the main oil hole 701, the oil passing space between the sealing member 4 and the main oil hole 701 gradually increases, and the blockage effect of the sealing member 4 on the main oil hole 701 gradually weakens. By controlling the actuation amplitude of the driving member 3 via the driving part, the size of the oil passing space can be adjusted, thereby adjusting the blockage effect of the sealing member 4 on the main oil hole 701, and further controlling the hydraulic pressure of the pilot part. At this time, the oil from the main valve part 12 reaches the oil passing passage via the main oil hole 701 and the auxiliary oil hole 702; in the power-off state of the electromagnetic valve, the driving part no longer provides driving force, and the driving member 3 returns to the original position under the elastic force of the reset elastic member 1, and the sealing member 4 acts together with the driving member 3 and finally forms complete blockage of the main oil hole 701. At this time, the oil from the main valve part 12 reaches the oil passing passage via the auxiliary oil hole 702 as a second pressure relief passage 11.

[0052] In some optional embodiments, when the driving member 3 is configured as a shaft body, the driving member 3 moves axially under the driving of the driving part, wherein the free end of the driving member 3 passes through the main oil hole 701 and is located in the valve sleeve 8. In actual implementation, the driving member 3 is designed as a circular shaft body, and there is a certain gap between the driving member 3 and the hole wall of the main oil hole 701 to ensure that the oil can pass through the main oil hole 701. A front yoke sleeve 2 is coaxially arranged on the driving member 3, and the front yoke sleeve 2 is fixedly arranged on the driving part. The front yoke sleeve 2 can precisely guide the driving member 3, thereby avoiding the phenomenon of movement jamming of the driving member 3.

[0053] The seal 4 can block the main oil hole 701 in the oil passage or in the valve sleeve 8. The space in the oil passage is relatively small. If the seal 4 is placed in the oil passage, it will reduce the flow area of ​​the oil. Therefore, in some optional embodiments, the seal 4 is located in the valve sleeve 8.

[0054] In some alternative embodiments, such as Figure 7 As shown, the sealing element 4 can be designed as, for example, a pilot valve core structure. A sealing end face 801 can be designed within the valve sleeve 8 of the main valve section 12. The sealing end face 801 can seal against the end face of the pilot valve core. When the oil outlet channel in the main valve section 12 is located within the sealing end face 801, the pilot valve core can be actuated by the drive unit to block the oil outlet channel in the main valve section 12. At this time, the reset elastic element 1 is positioned between the pilot valve core and the valve sleeve 8. In other embodiments, such as... Figure 4 As shown, when the seal 4 is a sheet structure, the valve sleeve 8 of the main valve section 12 can still be designed with a sealing end face 801, and the oil outlet channel in the main valve section 12 can be blocked by increasing the diameter of the free end of the drive member 3.

[0055] The specific embodiments described above illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Although the description of this application is presented in conjunction with some embodiments, this does not mean that the features of this application are limited to this embodiment. On the contrary, the purpose of describing the application in conjunction with embodiments is to cover other options or modifications that may be derived based on the claims of this application. To provide a thorough understanding of this application, many specific details are included in the above description. This application may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of this application, some specific details will be omitted in the description. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0056] It should be noted that in the description of the application, similar reference numerals and letters in different drawings represent similar items, therefore, once an item is defined in one drawing, it is not necessary to further define and explain it in the subsequent drawings. In the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance. In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0057] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application also intends to include these modifications and variations.

Claims

1. A failure control structure for a damped control solenoid valve, characterized in that, include: The control component (7) has a through main oil hole (701) and a secondary oil hole (702); The sealing element (4) and the control element (7) are arranged at intervals. In the axial view of the main oil hole (701), the main oil hole (701) is located in the projection area of ​​the sealing element (4), and the auxiliary oil hole (702) is located outside the projection area of ​​the sealing element (4) or the auxiliary oil hole (702) is connected to the projection area of ​​the sealing element (4). A drive member (3) is configured to move the seal (4) closer to or further away from the control member (7) so that the seal (4) blocks or releases the seal (4) from the main oil hole (701).

2. The failure control structure according to claim 1, characterized in that, The drive component (3) and the seal component (4) form a contact transmission structure.

3. The failure control structure according to claim 2, characterized in that, The drive member (3) is connected to the seal member (4) so ​​that the seal member (4) moves synchronously with the drive member (3).

4. The failure control structure according to claim 1, characterized in that, The number of the auxiliary oil holes (702) is configured to be multiple.

5. The failure control structure according to claim 4, characterized in that, The auxiliary oil hole (702) is arranged around the main oil hole (701).

6. The failure control structure according to claim 5, characterized in that, The auxiliary oil holes (702) are evenly distributed around the circumference of the main oil hole (701).

7. The failure control structure according to any one of claims 1 to 6, characterized in that, The control component (7) has an adjustment opening (703) through which the control component (7) passes, and at least one of the auxiliary oil holes (702) is connected to the main oil hole (701) through the adjustment opening (703).

8. The failure control structure according to any one of claims 1 to 6, characterized in that, The secondary oil hole (702) is configured to form a notch extending radially outward from the wall of the main oil hole (701).

9. A damping control solenoid valve, characterized in that, It includes a main valve section (12), a pilot section, and a drive section; The pilot section includes: Support block (6), which is fixed relative to the drive unit, and has an oil passage communicating with the outside of the damping control solenoid valve; According to any one of claims 1 to 8, the control element (7) is connected to the support block (6), the oil passage is connected to the valve sleeve (8) of the main valve part (12) through the main oil hole (701) or the auxiliary oil hole (702), and the drive element (3) is connected to the drive part to drive the seal (4) to move by the power given by the drive part.

10. The damped control solenoid valve with a failure control structure according to claim 9, characterized in that, The seal (4) is located in the valve sleeve (8).

11. The damped control solenoid valve with a failure control structure according to claim 10, characterized in that, The sealing element (4) is a valve core structure.

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