Automobile emergency brake solenoid valve spool with guide structure

Abstract

The utility model relates to the technical field of automobile emergency brake solenoid valve, especially to a automobile emergency brake solenoid valve spool with guide structure, including the casing, the top opening of casing is provided, the detachable installation of cover is had in the top of casing, the bottom of cover installs fixed iron core, the bottom of fixed iron core is equipped with dynamic iron core, and the top of dynamic iron core is connected with fixed iron core through first compression spring, the bottom of dynamic iron core is slid through the bottom of casing and is connected with the obturator, be provided with the sleeve in the casing, the sleeve is fixed in the casing through mounting seat. The utility model sets up a plurality of interval arrangement's limit wheel through setting up on the dynamic iron core outer wall, cooperation U type frame, connecting shaft, sleeve and the structure of second compression spring, make limit wheel always adhere to dynamic iron core outer wall, exert pressure in a plurality of directions, effectively prevent dynamic iron core from happening to deviate in the movement process, ensure its linear motion trajectory, improve the accuracy and reliability of spool obturation.

Description

Technical Field

[0001] This utility model relates to the field of automotive emergency braking solenoid valve technology, and in particular to a valve core of an automotive emergency braking solenoid valve with a guiding structure. Background Technology

[0002] The emergency brake solenoid valve is a key component of the ABS system. It is primarily used to automatically adjust braking force during braking, preventing wheel lock-up and maintaining an optimal slip ratio (approximately 20%), thereby ensuring braking safety and directional control. By controlling the inflation and deflation of brake pressure, the emergency brake solenoid valve keeps the wheels in a state of rolling and slipping, shortening braking distance and preventing excessive tire wear. On low-traction surfaces (such as in rain or snow), this system can reduce braking distance by more than 10%.

[0003] Existing automotive emergency brake solenoid valves control the valve core to fall into the valve body by energizing a coil, thereby blocking the passage within the valve body. However, this requires the valve core to slide linearly within the valve body. Over time, wear inevitably occurs between the valve core and the valve body, easily causing the valve core to deviate upon falling, failing to achieve precise alignment with the passage within the valve body and affecting its effectiveness. Therefore, we propose a valve core for an automotive emergency brake solenoid valve with a guiding structure. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned shortcomings in the existing technology by proposing a valve core for an automotive emergency braking solenoid valve with a guiding structure.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a valve core of an automotive emergency brake solenoid valve with a guiding structure, including a housing, an opening at the top of the housing, a cover plate detachably installed at the top of the housing, a fixed iron core installed at the bottom of the cover plate, a movable iron core provided below the fixed iron core, and the top of the movable iron core being connected to the fixed iron core via a first compression spring, and the bottom of the movable iron core slidingly penetrating the bottom of the housing and connected to a sealing block; A sleeve is installed inside the housing, and the sleeve is fixed inside the housing by a mounting base. The moving iron core is placed inside the sleeve. Multiple spaced limit wheels are provided on the outer wall of the moving iron core. The limit wheels are rotatably installed in the U-shaped frame. The rotation direction of the limit wheels is towards the sliding direction of the moving iron core on the housing. A connecting shaft is connected to the outer wall of the U-shaped frame. The other end of the connecting shaft is placed inside the sleeve, and the other end of the sleeve is fixed to the inner wall of the sleeve. A second compression spring is sleeved on the connecting shaft. One end of the second compression spring is fixed to the U-shaped frame, and the other end of the second compression spring is fixed to the inner wall of the sleeve.

[0006] Preferably, a coil is sleeved on the sleeve, and the bottom of the coil is fixed to the mounting base by fasteners.

[0007] Preferably, an arc-shaped cut surface is provided along the top edge of the moving iron core.

[0008] Preferably, the sleeve can be made of multiple arc-shaped plates spliced ​​together to facilitate the installation of the sleeve on the sleeve.

[0009] Preferably, a cylindrical cavity is provided inside the top of the moving iron core, and a guide shaft is built into the cylindrical cavity, with the top of the guide shaft fixed to the fixed iron core.

[0010] Preferably, a first annular limiting plate is installed along the top edge of the cylindrical cavity, and a second annular limiting plate is installed along the bottom edge of the guide shaft, with the second limiting plate corresponding to the first limiting plate.

[0011] Preferably, the fixed iron core is mounted on the bottom of the cover plate by fasteners.

[0012] The design scheme proposed in this utility model has the following beneficial effects in application: 1. This utility model, by setting multiple spaced limit wheels on the outer wall of the moving iron core, in conjunction with the structure of a U-shaped frame, connecting shaft, sleeve and second compression spring, ensures that the limit wheels are always in contact with the outer wall of the moving iron core, applying pressure in multiple directions, effectively preventing the moving iron core from deviating during movement, ensuring its linear motion trajectory, and improving the accuracy and reliability of valve core sealing.

[0013] 2. The moving iron core of this utility model is provided with a cylindrical cavity and a guide shaft inside. With the structure of the first limiting plate and the second limiting plate, the sliding range of the guide shaft is effectively limited to prevent it from falling out, thereby further enhancing the stability and guidance of the moving iron core's lifting and lowering movement.

[0014] 3. The top of the moving iron core of this utility model is provided with an arc-shaped cut surface, which facilitates the smooth reset of the limit wheel during the lifting and lowering of the moving iron core, reduces jamming and wear, and extends the service life of the valve core. It is especially suitable for emergency braking conditions with frequent operations. Attached Figure Description Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a cross-sectional view of the casing of this utility model; Figure 3 This is a cross-sectional front view of the present invention; Figure 4 This is a diagram illustrating the effect of using this utility model.

[0015] In the diagram: 1. Housing; 2. Cover plate; 3. Fixed iron core; 4. Guide shaft; 5. Moving iron core; 6. Sealing block; 7. Cylindrical cavity; 8. Second limiting plate; 9. First limiting plate; 10. First compression spring; 11. Sleeve; 12. Tube; 13. Connecting shaft; 14. U-shaped frame; 15. Limiting wheel; 16. Second compression spring; 17. Mounting base; 18. Arc-shaped section; 19. Coil. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0017] Example Reference Figures 1-4 A valve core for an automotive emergency braking solenoid valve with a guiding structure includes a housing 1 with an opening at the top. A cover plate 2 is detachably installed on the top of the housing 1, and a fixed iron core 3 is installed on the bottom of the cover plate 2. The fixed iron core 3 is installed on the bottom of the cover plate 2 by fasteners. In actual use, the fasteners are either screws or bolts, which facilitates the installation and removal of the fixed iron core 3 from the cover plate 2.

[0018] A movable iron core 5 is provided below the fixed iron core 3, and the top of the movable iron core 5 is connected to the fixed iron core 3 through the first compression spring 10. The bottom of the movable iron core 5 slides through the bottom of the housing 1 and is connected to a sealing block 6, allowing the movable iron core 5 to slide at the bottom of the housing 1. When sliding, the movable iron core 5 is subjected to the elastic force of the first compression spring 10.

[0019] In actual use, the housing 1 is fixed to the valve body (e.g., Figure 4 The sealing block 6 is located at the top of the valve body (as indicated by the middle arrow A), and is placed inside the valve body. The sealing block 6 corresponds to the channel port inside the valve body. That is, as the moving iron core 5 slides, it can drive the sealing block 6 to move inside the valve body, thereby realizing the sealing operation of the valve body.

[0020] A sleeve 11 is provided inside the housing 1. The sleeve 11 is fixed inside the housing 1 by a mounting base 17. The moving iron core 5 is placed inside the sleeve 11. A coil 19 is sleeved on the sleeve 11. The bottom of the coil 19 is fixed to the mounting base 17 by fasteners. In actual use, the fasteners are either bolts or screws. After the coil 19 is energized, it will drive the moving iron core 5 to move under the action of magnetic field lines, thereby providing power for the movement of the moving iron core 5.

[0021] Multiple spaced limit wheels 15 are provided on the outer wall of the moving iron core 5. The limit wheels 15 are rotatably mounted in the U-shaped frame 14, and the rotation direction of the limit wheels 15 is towards the sliding direction of the moving iron core 5 on the housing 1. A connecting shaft 13 is connected to the outer wall of the U-shaped frame 14. The other end of the connecting shaft 13 is placed in the sleeve 12, and the other end of the sleeve 12 is fixed to the inner wall of the sleeve 11. A second compression spring 16 is sleeved on the connecting shaft 13. One end of the second compression spring 16 is fixed to the U-shaped frame 14, and the other end of the second compression spring 16 is fixed to the inner wall of the sleeve 11. In use, when the limit wheels 15 are against the outer wall of the moving iron core 5, the second compression spring 16 will be in a compressed state. That is, when the moving iron core 5 slides, the limit wheels 15 will apply pressure to the moving iron core 5 in multiple directions without affecting the sliding of the moving iron core 5, so as to ensure the stability of the moving iron core 5 when sliding and realize the guiding operation of the moving iron core 5 as the valve core.

[0022] Furthermore, when the moving iron core 5 slides down, the upper limit wheel 15 may slide off the moving iron core 5. Therefore, an arc-shaped cut surface 18 is provided along the top edge of the moving iron core 5 so that after the moving iron core 5 rises, the upper limit wheel 15 can fall back onto the side wall of the moving iron core 5 more easily.

[0023] It should be noted that the sleeve 11 can be assembled from multiple arc-shaped plates to facilitate the installation of the sleeve 12 on the sleeve 11.

[0024] It should be further explained that a cylindrical cavity 7 is provided inside the top of the moving iron core 5, and a guide shaft 4 is installed inside the cylindrical cavity 7. The top of the guide shaft 4 is fixed to the fixed iron core 3, which provides additional guidance for the lifting and lowering movement of the moving iron core 5, and further improves the lifting and lowering stability of the moving iron core 5.

[0025] Furthermore, an annular first limiting plate 9 is installed along the top edge of the cylindrical cavity 7, and an annular second limiting plate 8 is installed along the bottom edge of the guide shaft 4. The second limiting plate 8 corresponds to the first limiting plate 9 and limits the sliding of the guide shaft 4 in the cylindrical cavity 7 to prevent the guide shaft 4 from slipping out of the cylindrical cavity 7.

[0026] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A valve core for an automotive emergency braking solenoid valve with a guiding structure, characterized in that: Includes a housing (1), with an opening at the top of the housing (1), a cover plate (2) is detachably installed at the top of the housing (1), a fixed iron core (3) is installed at the bottom of the cover plate (2), a movable iron core (5) is provided below the fixed iron core (3), and the top of the movable iron core (5) is connected to the fixed iron core (3) through a first compression spring (10), and the bottom of the movable iron core (5) slides through the bottom of the housing (1) and is connected to a sealing block (6); A sleeve (11) is provided inside the housing (1). The sleeve (11) is fixed inside the housing (1) by a mounting base (17). The moving iron core (5) is placed inside the sleeve (11). Multiple spaced limit wheels (15) are provided on the outer wall of the moving iron core (5). The limit wheels (15) are rotatably installed in the U-shaped frame (14). The rotation direction of the limit wheels (15) is towards the sliding direction of the moving iron core (5) on the housing (1). A connecting shaft (13) is connected to the outer wall of the U-shaped frame (14). The other end of the connecting shaft (13) is placed inside the sleeve (12). The other end of the sleeve (12) is fixed on the inner wall of the sleeve (11). A second compression spring (16) is sleeved on the connecting shaft (13). One end of the second compression spring (16) is fixed on the U-shaped frame (14). The other end of the second compression spring (16) is fixed on the inner wall of the sleeve (11).

2. The valve core of an automotive emergency brake solenoid valve with a guiding structure according to claim 1, characterized in that: A coil (19) is fitted onto a sleeve (11), and the bottom of the coil (19) is fixed to the mounting base (17) by fasteners.

3. The valve core of an automotive emergency braking solenoid valve with a guiding structure according to claim 1, characterized in that: An arc-shaped cut surface (18) is provided along the top edge of the moving iron core (5).

4. The valve core of an automotive emergency brake solenoid valve with a guiding structure according to claim 1, characterized in that: The sleeve (11) can be spliced ​​from multiple arc-shaped plates to facilitate the installation of the sleeve (12) on the sleeve (11).

5. The valve core of an automotive emergency brake solenoid valve with a guiding structure according to claim 1, characterized in that: A cylindrical cavity (7) is provided inside the top of the moving iron core (5), and a guide shaft (4) is built into the cylindrical cavity (7). The top of the guide shaft (4) is fixed to the fixed iron core (3).

6. The valve core of an automotive emergency brake solenoid valve with a guiding structure according to claim 5, characterized in that: A first annular limiting plate (9) is installed along the top edge of the cylindrical cavity (7), and a second annular limiting plate (8) is installed along the bottom edge of the guide shaft (4). The second limiting plate (8) corresponds to the first limiting plate (9).

7. The valve core of an automotive emergency brake solenoid valve with a guiding structure according to claim 1, characterized in that: The fixed iron core (3) is installed on the bottom of the cover plate (2) by fasteners.

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