A valve core filter screen assembly for brake-by-wire

Abstract

This utility model relates to a valve core and filter assembly for brake-by-wire systems, belonging to the field of automotive brake-by-wire technology. It includes a valve core, a valve body, and a filter screen, wherein the valve core and filter screen are respectively assembled in the valve body. The filter screen is located below the valve core, and a flow channel is located below the filter screen. The bottom of the filter screen has a support foot that rests on the upper edge of the flow channel. The advantages are its novel structure; by adding a ring of support feet to the lower end face of the original filter screen, and replacing the original flat filter screen with a filter screen with support feet, the support feet can contact the bottom surface of the filter screen with the flow channel opening before the liquid flows from top to bottom, preventing the flow channel from being completely blocked and causing poor backflow of brake-by-wire liquid. This solves the problem of traditional filter screens clogging the flow channel when liquid flows rapidly from top to bottom. Furthermore, it offers high safety, good assemblability, cost savings, and improved customer experience, providing a good alternative for the development of brake-by-wire systems.

Description

Technical Field

[0001] This utility model belongs to the field of automotive brake-by-wire technology, specifically relating to a valve core filter assembly for brake-by-wire. Background Technology

[0002] With the development of the automotive industry, brake-by-wire has been gradually applied in automotive applications. Generally, the valve body in a brake-by-wire structure houses a valve core and an end filter. The end filter is solid at the bottom, allowing liquid to pass through from all sides. This filter serves to prevent dust accumulation and also prevents the liquid flow from impacting the solenoid valve. However, in practical applications, the filter moves up and down with the liquid flow. When the liquid flows from top to bottom, the filter moves downwards, potentially clogging the flow channel and negatively impacting the user experience. This has made the filter a subject of considerable concern.

[0003] The existing filters used for in-line braking are flat filters. When a conventional filter is working, the liquid may enter from the filter opening and flow from top to bottom; or the liquid may enter from the bottom of the filter and flow from bottom to top.

[0004] Generally speaking, dust prevention requirements are very high in brake-by-wire systems, so filters are widely used. However, slow backflow is a common problem when using filters. The root cause is that the filter moves with the liquid as it flows from top to bottom, causing blockage of the flow channel. Summary of the Invention

[0005] This invention provides a valve core filter assembly for line-controlled braking to solve the problem of filter screen moving and clogging the flow channel when liquid flows from top to bottom.

[0006] The technical solution adopted by this utility model is as follows: it includes a valve core, a valve body and a filter screen, wherein the valve core and the filter screen are respectively assembled in the valve body, the filter screen is below the valve core, the lower flow channel is below the filter screen, and the bottom of the filter screen has a support foot, which stands on the upper edge of the lower flow channel.

[0007] The valve core has a central hole for liquid inflow.

[0008] The valve core and valve body are interference-fitted.

[0009] The filter screen is interference-fitted with the valve body.

[0010] The bottom of the filter screen has a ring of support feet.

[0011] The diameter of one ring of the filter screen's support legs is larger than the diameter of the downstream channel.

[0012] The advantages of this utility model are its novel structure. Based on the original filter screen, a ring of support feet is added to the lower end face. The original flat filter screen is replaced with a filter screen with support feet. This allows the support feet to contact the bottom surface of the filter screen with the lower flow channel opening before the bottom surface of the filter screen when the liquid moves from top to bottom. This prevents the lower flow channel from being completely blocked, which would cause poor liquid backflow in the linear brake system. This solves the problem of the filter screen clogging the lower flow channel when the liquid flows rapidly from top to bottom in traditional filter screens. In addition, it has high safety, good assemblability, saves costs, improves the customer experience, and provides a good option for the development of linear brake systems. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort. Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of the filter screen of this utility model. Detailed Implementation

[0014] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0015] It includes a valve core 1, a valve body 2, and a filter screen 3. The valve core 1 and the filter screen 3 are respectively assembled in the valve body 2. The filter screen 3 is below the valve core 1, and the lower flow channel 201 is below the filter screen 3. The bottom of the filter screen 3 has a support foot 301, which stands on the upper edge 202 of the lower flow channel.

[0016] The valve core 1 has a central hole 101 for liquid inflow.

[0017] The valve core 1 and the valve body 2 are interference-fitted.

[0018] The filter screen 3 is interference-fitted with the valve body 2.

[0019] The bottom of the filter screen 3 has a ring of support feet 301.

[0020] The diameter of one ring of support legs 301 of the filter screen is larger than the diameter of the lower flow channel 201.

[0021] During operation, the liquid flows in from the central hole 101 of the valve core 1, passes through the filter screen 3 and flows into the lower flow channel 201, completing the entire liquid flow. When the liquid flows from top to bottom, even if the flow rate is too fast and impacts the filter screen 3, causing the filter screen 3 to move downward, the support legs 301 of the filter screen 3 will contact the upper edge 202 of the lower flow channel inside the valve body 2 before the filter screen, thus preventing the flow channel from becoming blocked.

[0022] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the scope of protection of the present invention is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present invention, any equivalent substitutions or modifications made by those skilled in the art based on the technical solution and the inventive concept of the present invention within the scope of the technical concept disclosed in the present invention shall all fall within the scope of protection of the present invention.

[0023] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way without contradiction. In order to avoid unnecessary repetition, this utility model will not describe the various possible combinations separately.

Claims

1. A valve core filter assembly for in-line braking, characterized in that: It includes a valve core, a valve body, and a filter screen. The valve core and the filter screen are respectively assembled in the valve body. The filter screen is below the valve core, and the lower flow channel is below the filter screen. The bottom of the filter screen has a support foot, which stands on the upper edge of the lower flow channel.

2. The valve core filter assembly for line-controlled braking according to claim 1, characterized in that: The valve core has a central hole for liquid inflow.

3. A valve core filter assembly for line-controlled braking according to claim 1, characterized in that: The valve core and valve body are interference-fitted.

4. A valve core filter assembly for line-controlled braking according to claim 1, characterized in that: The filter screen is interference-fitted with the valve body.

5. A valve core filter assembly for line-controlled braking according to claim 1, characterized in that: The bottom of the filter screen has a ring of support feet.

6. A valve core filter assembly for line-controlled braking according to claim 5, characterized in that: The diameter of one ring of the filter screen's support legs is larger than the diameter of the downstream channel.

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