Low-power-consumption attitude control electromagnetic valve

Abstract

The utility model discloses a low-power-consumption posture control electromagnetic valve, which belongs to the field of electromagnetic valve design and comprises a valve body component, an electromagnetic coil structure and a valve core component, the electromagnetic coil structure and the valve core component are positioned in the valve body component, and the valve body component comprises a shell, a static iron core fixed on the shell, a throttler connected with the shell and a valve sleeve; a valve sleeve mounting part is arranged on the inner wall surface of the top of the throttler, an annular convex step surface is arranged on the valve sleeve mounting part, a step positioning structure matched with the convex step surface is arranged on the outer wall of the valve sleeve, and the throttler and the valve sleeve are assembled through the step positioning structure; a magnetic conductive ring is arranged in the area between the electromagnetic coil structure and the movable iron core and surrounds the movable iron core. According to the electromagnetic valve, the accurate limiting characteristic of a step structure is utilized, and stable and accurate relative position reference can be provided for the throttler and the valve sleeve in the assembling process; the magnetic conductive ring structure can guide the direction of the magnetic flux, so that the magnetic flux efficiently acts on a key working area, and the magnetic flux utilization rate is further remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of solenoid valve design, specifically relates to a low -power consumption attitude control solenoid valve. BACKGROUND

[0002] Vehicle attitude control solenoid valve is a kind of key automobile electronic control element, it realizes the accurate control to the vehicle suspension system by adjusting the fluid flow in hydraulic or pneumatic system, to optimize the driving attitude and stability of vehicle. This solenoid valve is usually integrated in electronic control suspension system (such as active hydraulic suspension system), can according to the driving state (such as acceleration, braking, turning etc.) and road condition of vehicle, real-time adjustment suspension stiffness and height, to improve driving comfort and handling performance. Its core working principle is to control the movement of valve core by the on-off electricity of electromagnetic coil, to change the passage and pressure of fluid, finally realizes the dynamic adjustment to vehicle attitude.

[0003] In existing vehicle attitude control solenoid valve, there are some key problems to be solved. When attitude control solenoid valve is in fully open state, the gap reserved between its valve core and valve sleeve is extremely small, requires component to be precision. The traditional tool positioning mode, under this kind of precision structure, exposes obvious limitation, positioning deviation is easily caused, the flow of fluid when passing through valve is difficult to accurately control, or the adverse conditions of flow too large or flow too small, directly lead to the high rejection rate of valve product, greatly increase the production cost and resource waste.

[0004] In addition, the magnetic flux of traditional solenoid valve cannot be fully and effectively utilized in transmission process, which seriously restricts the exertion of electromagnetic force. For example, in the magnetic circuit of traditional solenoid valve, the magnetic flux generated by coil excitation needs to pass through magnetic skeleton, air gap, armature and stopper in turn to form a closed loop. However, when no side magnetic ring is configured, the magnetic force line is forced to pass through bypass (such as skeleton lateral space or external structure) to form leakage when flowing through low permeability area (such as non-magnetic skeleton material or air gap) due to the sudden increase of local magnetic resistance. Leakage flux does not participate in the effective air gap magnetic circuit work, resulting in the reduction of magnetic energy utilization rate. UTILITY MODEL CONTENTS

[0005] To solve the problems in the prior art, the utility model provides a low-power consumption attitude control solenoid valve, which optimizes the structure of solenoid valve from the aspects of positioning mode and magnetic circuit structure, effectively solves the pain point problem in the prior art.

[0006] The low-power consumption posture control electromagnetic valve comprises a valve body assembly, an electromagnetic coil and a valve core assembly located in the valve body assembly, the valve core assembly comprises a moving iron core, a spring and a valve core arranged at the end of the moving iron core, the valve body assembly comprises a shell, a static iron core fixed on the shell, a restrictor connected with the shell and a valve sleeve, the moving iron core, the static iron core, the spring, the valve core, the valve sleeve and the restrictor are coaxially arranged, wherein a gap is arranged between the moving iron core and the static iron core, one end of the spring is connected with the static iron core, and the other end of the spring is connected with the moving iron core, and the electromagnetic coil is located in the shell and circumferentially surrounds the moving iron core and the static iron core.

[0007] The side wall of the restrictor is provided with a side flow channel, the valve sleeve is arranged on the inner wall of the top of the restrictor, and the valve sleeve is provided with an upper flow channel.

[0008] The inner wall of the top of the restrictor is provided with a valve sleeve mounting portion, the valve sleeve mounting portion is provided with an annular raised step surface, the outer wall of the valve sleeve is provided with a step positioning structure matched with the raised step surface, and the restrictor and the valve sleeve are assembled through the step positioning structure.

[0009] A magnetic conducting ring is arranged between the electromagnetic coil and the moving iron core, and the magnetic conducting ring surrounds the moving iron core.

[0010] According to the preferred embodiment of the application, the moving iron core and the static iron core are further provided with a magnetic isolation ring, one end of the magnetic isolation ring is welded and fixed with the outer wall of the static iron core, and the other end of the magnetic isolation ring is welded and fixed with the restrictor, the magnetic isolation ring is welded and fixed with the static iron core and the restrictor (the restrictor is fixed with the valve body), so that the displacement of the static iron core caused by vibration or impact is avoided, the magnetic flux is prevented from passing through unnecessary paths by using the high magnetic resistance characteristic, and the efficiency of the magnetic circuit is improved. The moving iron core is located in the magnetic isolation ring, and the magnetic conducting ring is located on the radially outer side of the magnetic isolation ring.

[0011] Compared with the existing electromagnetic valve, the utility model has the advantages of:

[0012] The electromagnetic valve of the utility model discloses discards the traditional positioning mode in the assembly link of the restrictor and the valve sleeve, and instead adopts a step positioning structure design. This unique design makes full use of the precise limiting characteristics of the step structure, and can provide a stable and accurate relative position reference for the restrictor and the valve sleeve during assembly. This not only significantly reduces the difficulty of assembly operation, but also greatly improves the overall efficiency of the production process, and reduces production costs from the root, thereby providing a powerful guarantee for efficient and stable production of electromagnetic valves.

[0013] Through the in-depth research on the magnetic circuit structure inside the electromagnetic valve, it is found that the traditional electromagnetic valve does not equip the magnetic flux guide ring device on the side of the framework, so that the magnetic flux cannot be fully and effectively utilized in the transmission process, which seriously restricts the exertion of electromagnetic force. In order to overcome this technical bottleneck, the utility model specially adds a magnetic flux guide ring structure on the side of the moving iron core, realizes the significant enhancement of electromagnetic force by reconstructing the magnetic flux leakage path, reducing the bypass magnetic resistance and improving the main magnetic flux ratio. Through practical verification, this improvement measure can skillfully guide the magnetic flux to the key working area, so that the magnetic flux utilization rate is improved, the electromagnetic force is effectively enhanced, and the working performance of the electromagnetic valve is comprehensively optimized. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a sectional view of the electromagnetic valve of the utility model;

[0015] Figure 2 It is a schematic view of several step parts of the electromagnetic valve of the utility model;

[0016] Figure 3 It is a performance comparison diagram of whether the electromagnetic valve structure adopts the magnetic flux guide ring.

[0017] In the figure, the moving iron core 11, the spring 12, the valve core 13, the shell 21, the static iron core 22, the throttler 23, the valve sleeve 24, the side flow channel opening 25, the upper flow channel opening 26, the side filter screen 27, the top filter screen 28, the cover plate 29, the magnetic flux guide ring 31, the magnetic flux isolation ring 32, the step part 33, the convex step surface 231, the positioning step structure 232. DETAILED DESCRIPTION

[0018] The utility model will be further described and explained in combination with the specific implementation mode. The embodiment is only the demonstration of the disclosure and does not define the limit range. The technical features of each embodiment in the utility model can be combined under the premise of no mutual conflict.

[0019] As Figure 1 The structure schematic view of a specific low-power attitude control electromagnetic valve provided by the embodiment is shown, the electromagnetic valve of the utility model is similar to the traditional electromagnetic valve in structure, and both include the valve body assembly, and the electromagnetic coil structure and the valve core assembly in the valve body assembly, and the difference between the traditional electromagnetic valve is that the utility model optimizes the design to the internal structure assembly of the electromagnetic valve, and the performance of the electromagnetic valve is improved from the positioning mode and the magnetic circuit structure.

[0020] As Figure 1As shown, the valve core 13 assembly of the electromagnetic valve of the embodiment mainly comprises a moving core 11, a spring 12 and a valve core 13 arranged at the end of the moving core 11. The valve body assembly mainly comprises a shell 21, a static core 22 fixed on the shell 21, a restrictor 23 connected with the shell 21 and a valve sleeve 24. The moving core 11, the static core 22, the spring 12, the valve core 13, the valve sleeve 24 and the restrictor 23 are coaxially arranged, and the moving core 11 and the static core 22 have a gap therebetween. One end of the spring 12 is connected with the static core 22, and the other end thereof is connected with the static core 22. The electromagnetic coil structure is located in the shell 21 and circumferentially surrounds the moving core 11 and the static core 22.

[0021] As shown in Figure 1 and Figure 2 As shown, the restrictor 23 of the utility model is a rotary body structure with a cavity inside, and the side wall thereof is provided with a side flow passage opening 25, and the top and bottom thereof are provided with openings. The valve sleeve 24 is installed on the inner wall of the top of the restrictor 23, and the valve sleeve 24 is provided with an upper flow passage opening 26 inside. In a preferred embodiment of the utility model, the inner diameter of the valve sleeve 24 installation portion matches the outer diameter of the valve sleeve 24, and the restrictor 23 is in interference fit with the valve sleeve 24. The side flow passage opening 25 is provided with a side filter screen 27 around the same. The top of the restrictor 23 is provided with a top filter screen 28 on the end face thereof. The convex step surface 231 is arranged on the inner wall surface of the restrictor 23 between the side flow passage opening 25 and the upper flow passage opening 26.

[0022] In the embodiment, the top inner wall surface of the restrictor 23 is provided with a valve sleeve 24 installation portion as a part for installing the valve sleeve 24. The valve sleeve 24 installation portion is provided with an annular convex step surface 231, and the outer wall of the valve sleeve 24 is provided with a step positioning structure matched with the convex step surface 231. The restrictor 23 and the valve sleeve 24 are assembled through the step positioning structure. In the assembly process of the restrictor 23 and the valve sleeve 24, the step positioning structure is adopted. This design fully utilizes the precise limiting characteristics of the step structure, can provide a stable and accurate relative position reference for the restrictor 23 and the valve sleeve 24 during the assembly process, significantly reduces the difficulty of the assembly operation, greatly improves the overall efficiency of the production process, and reduces the production cost from the root, thereby providing a powerful guarantee for the efficient and stable production of the electromagnetic valve.

[0023] The electromagnetic valve of the utility model is a normally closed electromagnetic valve. When no power is supplied or the current does not reach the opening current, the spring 12 will abut the valve core 13 against the upper flow passage opening 26 of the valve sleeve 24, thereby blocking the flow passage between the side flow passage opening 25 and the upper flow passage opening 26, and the electromagnetic valve is closed. When the current of the electromagnetic valve reaches the opening current, the moving core 11 moves to compress the spring 12 beyond the static core 22, the valve core 13 moves towards the moving core 11, and the side flow passage opening 25 and the upper flow passage opening 26 are communicated.

[0024] As Figure 1 shown, the electromagnetic valve of the utility model still sets up the magnetic ring 32 in the periphery of the moving iron core and the static iron core, one end of the magnetic ring is welded and fixed with the outer wall surface of the static iron core, the other end cooperates with the step part of the outer wall surface of the throttle and is welded and fixed. The magnetic ring 32 of the utility model is fixed with the static iron core and the throttle through welding, avoids the displacement of the static iron core caused by vibration or impact, and prevents the magnetic flux from passing through unnecessary path by using high magnetic resistance characteristics, thereby improving the efficiency of the magnetic circuit. The moving iron core is located in the magnetic ring 32 and can move axially, and the magnetic conducting ring 31 is located on the radial outer side of the magnetic ring 32. The magnetic conducting ring 31 of the embodiment should have good magnetic conducting performance and mechanical strength, and is suitable for the application environment of the electromagnetic valve, so the material thereof can be 1J50, DT4, DT4C, Cr17NiTi, DC04 or No. 10 steel, etc. As Figure 3 shown, the electromagnetic valve structure of the utility model does not adopt the magnetic conducting ring (referred to as the original scheme) and the side surface adds the magnetic conducting ring (the scheme). Figure 1 As Figure 3 can be seen, the embodiment adds the magnetic conducting ring 31 structure on the side surface of the moving iron core 11. Through practice verification, this improvement measure can skillfully guide the magnetic flux to flow, make it more concentrated and efficient to act on the key working area, and then significantly improve the magnetic flux utilization rate, so that the electromagnetic force can be effectively enhanced, and the working performance of the electromagnetic valve is comprehensively optimized. The problem that the magnetic flux of the traditional electromagnetic valve cannot be fully and effectively utilized in the transmission process is overcome.

[0025] As Figure 1 shown, the electromagnetic coil structure of the utility model adopts the prior art, which is usually installed in the shell, and the electromagnetic coil is fixed and installed in the shell by using the coil framework and framework filler; the inner wall surface of the electromagnetic coil structure is the coil framework, and the inner wall surface of the electromagnetic coil structure is provided with a step part 33. In order to fix and install the magnetic conducting ring 31, the bottom of the throttle 23 is inserted into the inside of the shell 21 and located between the moving iron core 11 and the electromagnetic coil structure; the moving iron core 11 is partially located in the cavity of the bottom of the throttle 23. The outer wall surface of the throttle 23 is provided with a protruding positioning step structure 232. The positioning step structure 232 is positioned and assembled with the end surface of the shell 21. The magnetic conducting ring 31 is fixed between the outer wall surface of the throttle 23 and the electromagnetic coil structure, and the two ends of the magnetic conducting ring 31 are limited by the step part 33 provided on the electromagnetic coil and the positioning step structure 232 provided on the outer wall surface of the throttle 23.

[0026] The end surface center of the moving iron core 11 of the embodiment is provided with a spring 12 mounting groove, the spring 12 is arranged in the spring 12 mounting groove, and the length of the spring 12 in the natural state is greater than the depth of the spring 12 mounting groove, so that the gap between the moving iron core 11 and the static iron core 22 is ensured.

[0027] In summary, the utility model discloses the structure optimization to solenoid valve, from the positioning mode and the magnetic circuit structure two aspects, effectively solve the pain point problem in the prior art, have very high innovation and practical value, and solenoid valve related industry is expected to bring brand-new development opportunity.

[0028] The above-mentioned embodiments only express several implementation manners of the utility model, and the description is more specific and detailed, but it can not be understood as the limitation of the utility model patent scope. For ordinary skilled person in the art, without departing from the concept of the utility model, a number of modifications and improvements can be made, which belong to the protection scope of the utility model.

Claims

1. A low-power attitude control solenoid valve, characterized in that, The device includes a valve body assembly, an electromagnetic coil structure located within the valve body assembly, and a valve core assembly. The valve core assembly includes a moving iron core, a spring, and a valve core disposed at the end of the moving iron core. The valve body assembly includes a housing, a stationary iron core fixed to the housing, a throttle, and a valve sleeve connected to the housing. The moving iron core, stationary iron core, spring, valve core, valve sleeve, and throttle are all coaxially arranged, with a gap between the moving iron core and the stationary iron core. One end of the spring is connected to the stationary iron core, and the other end is connected to the moving iron core. The electromagnetic coil structure is located inside the housing and is arranged circumferentially around the moving iron core and the stationary iron core. The throttle has a side flow channel opening on its side wall, and the valve sleeve is installed on the inner wall of the top of the throttle, with an upper flow channel opening inside the valve sleeve. The throttle has a valve sleeve mounting part on the inner wall of the top, and the valve sleeve mounting part has an annular raised step surface. The outer wall of the valve sleeve has a step positioning structure that mates with the raised step surface. The throttle and the valve sleeve are assembled through the step positioning structure. A magnetic ring is provided in the area between the electromagnetic coil structure and the moving iron core, and the magnetic ring surrounds the moving iron core.

2. The solenoid valve according to claim 1, characterized in that, The inner diameter of the valve sleeve mounting part matches the outer diameter of the valve sleeve, and the throttle is interference-fitted with the valve sleeve.

3. The solenoid valve according to claim 1, characterized in that, The raised stepped surface is provided on the inner wall surface of the throttle between the side flow channel and the upper flow channel.

4. The solenoid valve according to claim 1, characterized in that, The magnetic ring is made of 1J50, DT4, DT4C, Cr17NiTi, DC04 or No. 10 steel.

5. The solenoid valve according to claim 1, characterized in that, A side filter screen is provided around the side flow channel opening; a top filter screen is installed on the top end face of the throttle.

6. The solenoid valve according to claim 1, characterized in that, A spring mounting groove is provided at the center of the end face of the moving iron core facing the stationary iron core. The spring is set in the spring mounting groove, and the length of the spring in its natural state is greater than the depth of the spring mounting groove.

7. The solenoid valve according to claim 1, characterized in that, The bottom of the throttle is inserted into the housing and located between the moving iron core and the electromagnetic coil structure; the outer wall of the throttle is provided with a raised positioning step structure, which is used to position and assemble with the end face of the housing.

8. The solenoid valve according to claim 7, characterized in that, The inner wall of the electromagnetic coil structure is provided with a stepped portion, and the upper and lower ends of the magnetic ring are respectively limited by the stepped portion provided on the electromagnetic coil and the positioning stepped structure provided on the outer wall of the throttle.

9. The solenoid valve according to claim 1, characterized in that, A magnetic shielding ring is also provided around the moving iron core and the stationary iron core. One end of the magnetic shielding ring is welded and fixed to the outer wall of the stationary iron core, and the other end is welded and fixed to the throttle. The moving iron core is located inside the magnetic shielding ring. The magnetic guide ring is located on the radial outer side of the magnetic shielding ring.

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